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4680 lines
137 KiB
4680 lines
137 KiB
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ |
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/* |
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* Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. |
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* Copyright (c) 2004 Infinicon Corporation. All rights reserved. |
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* Copyright (c) 2004, 2020 Intel Corporation. All rights reserved. |
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* Copyright (c) 2004 Topspin Corporation. All rights reserved. |
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* Copyright (c) 2004 Voltaire Corporation. All rights reserved. |
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* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
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* Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. |
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*/ |
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|
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#ifndef IB_VERBS_H |
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#define IB_VERBS_H |
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|
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#include <linux/ethtool.h> |
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#include <linux/types.h> |
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#include <linux/device.h> |
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#include <linux/dma-mapping.h> |
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#include <linux/kref.h> |
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#include <linux/list.h> |
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#include <linux/rwsem.h> |
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#include <linux/workqueue.h> |
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#include <linux/irq_poll.h> |
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#include <uapi/linux/if_ether.h> |
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#include <net/ipv6.h> |
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#include <net/ip.h> |
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#include <linux/string.h> |
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#include <linux/slab.h> |
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#include <linux/netdevice.h> |
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#include <linux/refcount.h> |
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#include <linux/if_link.h> |
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#include <linux/atomic.h> |
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#include <linux/mmu_notifier.h> |
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#include <linux/uaccess.h> |
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#include <linux/cgroup_rdma.h> |
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#include <linux/irqflags.h> |
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#include <linux/preempt.h> |
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#include <linux/dim.h> |
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#include <uapi/rdma/ib_user_verbs.h> |
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#include <rdma/rdma_counter.h> |
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#include <rdma/restrack.h> |
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#include <rdma/signature.h> |
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#include <uapi/rdma/rdma_user_ioctl.h> |
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#include <uapi/rdma/ib_user_ioctl_verbs.h> |
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#define IB_FW_VERSION_NAME_MAX ETHTOOL_FWVERS_LEN |
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struct ib_umem_odp; |
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struct ib_uqp_object; |
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struct ib_usrq_object; |
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struct ib_uwq_object; |
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struct rdma_cm_id; |
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extern struct workqueue_struct *ib_wq; |
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extern struct workqueue_struct *ib_comp_wq; |
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extern struct workqueue_struct *ib_comp_unbound_wq; |
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struct ib_ucq_object; |
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__printf(3, 4) __cold |
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void ibdev_printk(const char *level, const struct ib_device *ibdev, |
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const char *format, ...); |
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__printf(2, 3) __cold |
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void ibdev_emerg(const struct ib_device *ibdev, const char *format, ...); |
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__printf(2, 3) __cold |
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void ibdev_alert(const struct ib_device *ibdev, const char *format, ...); |
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__printf(2, 3) __cold |
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void ibdev_crit(const struct ib_device *ibdev, const char *format, ...); |
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__printf(2, 3) __cold |
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void ibdev_err(const struct ib_device *ibdev, const char *format, ...); |
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__printf(2, 3) __cold |
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void ibdev_warn(const struct ib_device *ibdev, const char *format, ...); |
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__printf(2, 3) __cold |
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void ibdev_notice(const struct ib_device *ibdev, const char *format, ...); |
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__printf(2, 3) __cold |
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void ibdev_info(const struct ib_device *ibdev, const char *format, ...); |
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#if defined(CONFIG_DYNAMIC_DEBUG) || \ |
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(defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE)) |
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#define ibdev_dbg(__dev, format, args...) \ |
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dynamic_ibdev_dbg(__dev, format, ##args) |
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#else |
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__printf(2, 3) __cold |
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static inline |
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void ibdev_dbg(const struct ib_device *ibdev, const char *format, ...) {} |
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#endif |
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#define ibdev_level_ratelimited(ibdev_level, ibdev, fmt, ...) \ |
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do { \ |
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static DEFINE_RATELIMIT_STATE(_rs, \ |
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DEFAULT_RATELIMIT_INTERVAL, \ |
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DEFAULT_RATELIMIT_BURST); \ |
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if (__ratelimit(&_rs)) \ |
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ibdev_level(ibdev, fmt, ##__VA_ARGS__); \ |
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} while (0) |
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#define ibdev_emerg_ratelimited(ibdev, fmt, ...) \ |
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ibdev_level_ratelimited(ibdev_emerg, ibdev, fmt, ##__VA_ARGS__) |
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#define ibdev_alert_ratelimited(ibdev, fmt, ...) \ |
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ibdev_level_ratelimited(ibdev_alert, ibdev, fmt, ##__VA_ARGS__) |
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#define ibdev_crit_ratelimited(ibdev, fmt, ...) \ |
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ibdev_level_ratelimited(ibdev_crit, ibdev, fmt, ##__VA_ARGS__) |
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#define ibdev_err_ratelimited(ibdev, fmt, ...) \ |
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ibdev_level_ratelimited(ibdev_err, ibdev, fmt, ##__VA_ARGS__) |
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#define ibdev_warn_ratelimited(ibdev, fmt, ...) \ |
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ibdev_level_ratelimited(ibdev_warn, ibdev, fmt, ##__VA_ARGS__) |
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#define ibdev_notice_ratelimited(ibdev, fmt, ...) \ |
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ibdev_level_ratelimited(ibdev_notice, ibdev, fmt, ##__VA_ARGS__) |
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#define ibdev_info_ratelimited(ibdev, fmt, ...) \ |
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ibdev_level_ratelimited(ibdev_info, ibdev, fmt, ##__VA_ARGS__) |
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#if defined(CONFIG_DYNAMIC_DEBUG) || \ |
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(defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE)) |
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/* descriptor check is first to prevent flooding with "callbacks suppressed" */ |
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#define ibdev_dbg_ratelimited(ibdev, fmt, ...) \ |
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do { \ |
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static DEFINE_RATELIMIT_STATE(_rs, \ |
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DEFAULT_RATELIMIT_INTERVAL, \ |
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DEFAULT_RATELIMIT_BURST); \ |
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DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ |
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if (DYNAMIC_DEBUG_BRANCH(descriptor) && __ratelimit(&_rs)) \ |
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__dynamic_ibdev_dbg(&descriptor, ibdev, fmt, \ |
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##__VA_ARGS__); \ |
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} while (0) |
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#else |
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__printf(2, 3) __cold |
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static inline |
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void ibdev_dbg_ratelimited(const struct ib_device *ibdev, const char *format, ...) {} |
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#endif |
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union ib_gid { |
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u8 raw[16]; |
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struct { |
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__be64 subnet_prefix; |
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__be64 interface_id; |
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} global; |
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}; |
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extern union ib_gid zgid; |
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enum ib_gid_type { |
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IB_GID_TYPE_IB = IB_UVERBS_GID_TYPE_IB, |
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IB_GID_TYPE_ROCE = IB_UVERBS_GID_TYPE_ROCE_V1, |
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IB_GID_TYPE_ROCE_UDP_ENCAP = IB_UVERBS_GID_TYPE_ROCE_V2, |
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IB_GID_TYPE_SIZE |
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}; |
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#define ROCE_V2_UDP_DPORT 4791 |
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struct ib_gid_attr { |
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struct net_device __rcu *ndev; |
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struct ib_device *device; |
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union ib_gid gid; |
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enum ib_gid_type gid_type; |
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u16 index; |
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u8 port_num; |
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}; |
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enum { |
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/* set the local administered indication */ |
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IB_SA_WELL_KNOWN_GUID = BIT_ULL(57) | 2, |
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}; |
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enum rdma_transport_type { |
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RDMA_TRANSPORT_IB, |
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RDMA_TRANSPORT_IWARP, |
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RDMA_TRANSPORT_USNIC, |
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RDMA_TRANSPORT_USNIC_UDP, |
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RDMA_TRANSPORT_UNSPECIFIED, |
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}; |
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enum rdma_protocol_type { |
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RDMA_PROTOCOL_IB, |
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RDMA_PROTOCOL_IBOE, |
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RDMA_PROTOCOL_IWARP, |
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RDMA_PROTOCOL_USNIC_UDP |
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}; |
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__attribute_const__ enum rdma_transport_type |
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rdma_node_get_transport(unsigned int node_type); |
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enum rdma_network_type { |
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RDMA_NETWORK_IB, |
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RDMA_NETWORK_ROCE_V1, |
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RDMA_NETWORK_IPV4, |
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RDMA_NETWORK_IPV6 |
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}; |
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static inline enum ib_gid_type ib_network_to_gid_type(enum rdma_network_type network_type) |
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{ |
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if (network_type == RDMA_NETWORK_IPV4 || |
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network_type == RDMA_NETWORK_IPV6) |
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return IB_GID_TYPE_ROCE_UDP_ENCAP; |
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else if (network_type == RDMA_NETWORK_ROCE_V1) |
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return IB_GID_TYPE_ROCE; |
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else |
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return IB_GID_TYPE_IB; |
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} |
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static inline enum rdma_network_type |
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rdma_gid_attr_network_type(const struct ib_gid_attr *attr) |
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{ |
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if (attr->gid_type == IB_GID_TYPE_IB) |
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return RDMA_NETWORK_IB; |
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if (attr->gid_type == IB_GID_TYPE_ROCE) |
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return RDMA_NETWORK_ROCE_V1; |
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if (ipv6_addr_v4mapped((struct in6_addr *)&attr->gid)) |
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return RDMA_NETWORK_IPV4; |
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else |
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return RDMA_NETWORK_IPV6; |
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} |
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enum rdma_link_layer { |
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IB_LINK_LAYER_UNSPECIFIED, |
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IB_LINK_LAYER_INFINIBAND, |
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IB_LINK_LAYER_ETHERNET, |
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}; |
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enum ib_device_cap_flags { |
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IB_DEVICE_RESIZE_MAX_WR = (1 << 0), |
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IB_DEVICE_BAD_PKEY_CNTR = (1 << 1), |
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IB_DEVICE_BAD_QKEY_CNTR = (1 << 2), |
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IB_DEVICE_RAW_MULTI = (1 << 3), |
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IB_DEVICE_AUTO_PATH_MIG = (1 << 4), |
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IB_DEVICE_CHANGE_PHY_PORT = (1 << 5), |
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IB_DEVICE_UD_AV_PORT_ENFORCE = (1 << 6), |
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IB_DEVICE_CURR_QP_STATE_MOD = (1 << 7), |
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IB_DEVICE_SHUTDOWN_PORT = (1 << 8), |
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/* Not in use, former INIT_TYPE = (1 << 9),*/ |
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IB_DEVICE_PORT_ACTIVE_EVENT = (1 << 10), |
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IB_DEVICE_SYS_IMAGE_GUID = (1 << 11), |
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IB_DEVICE_RC_RNR_NAK_GEN = (1 << 12), |
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IB_DEVICE_SRQ_RESIZE = (1 << 13), |
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IB_DEVICE_N_NOTIFY_CQ = (1 << 14), |
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/* |
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* This device supports a per-device lkey or stag that can be |
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* used without performing a memory registration for the local |
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* memory. Note that ULPs should never check this flag, but |
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* instead of use the local_dma_lkey flag in the ib_pd structure, |
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* which will always contain a usable lkey. |
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*/ |
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IB_DEVICE_LOCAL_DMA_LKEY = (1 << 15), |
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/* Reserved, old SEND_W_INV = (1 << 16),*/ |
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IB_DEVICE_MEM_WINDOW = (1 << 17), |
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/* |
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* Devices should set IB_DEVICE_UD_IP_SUM if they support |
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* insertion of UDP and TCP checksum on outgoing UD IPoIB |
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* messages and can verify the validity of checksum for |
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* incoming messages. Setting this flag implies that the |
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* IPoIB driver may set NETIF_F_IP_CSUM for datagram mode. |
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*/ |
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IB_DEVICE_UD_IP_CSUM = (1 << 18), |
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IB_DEVICE_UD_TSO = (1 << 19), |
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IB_DEVICE_XRC = (1 << 20), |
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/* |
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* This device supports the IB "base memory management extension", |
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* which includes support for fast registrations (IB_WR_REG_MR, |
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* IB_WR_LOCAL_INV and IB_WR_SEND_WITH_INV verbs). This flag should |
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* also be set by any iWarp device which must support FRs to comply |
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* to the iWarp verbs spec. iWarp devices also support the |
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* IB_WR_RDMA_READ_WITH_INV verb for RDMA READs that invalidate the |
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* stag. |
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*/ |
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IB_DEVICE_MEM_MGT_EXTENSIONS = (1 << 21), |
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IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1 << 22), |
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IB_DEVICE_MEM_WINDOW_TYPE_2A = (1 << 23), |
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IB_DEVICE_MEM_WINDOW_TYPE_2B = (1 << 24), |
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IB_DEVICE_RC_IP_CSUM = (1 << 25), |
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/* Deprecated. Please use IB_RAW_PACKET_CAP_IP_CSUM. */ |
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IB_DEVICE_RAW_IP_CSUM = (1 << 26), |
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/* |
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* Devices should set IB_DEVICE_CROSS_CHANNEL if they |
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* support execution of WQEs that involve synchronization |
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* of I/O operations with single completion queue managed |
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* by hardware. |
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*/ |
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IB_DEVICE_CROSS_CHANNEL = (1 << 27), |
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IB_DEVICE_MANAGED_FLOW_STEERING = (1 << 29), |
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IB_DEVICE_INTEGRITY_HANDOVER = (1 << 30), |
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IB_DEVICE_ON_DEMAND_PAGING = (1ULL << 31), |
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IB_DEVICE_SG_GAPS_REG = (1ULL << 32), |
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IB_DEVICE_VIRTUAL_FUNCTION = (1ULL << 33), |
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/* Deprecated. Please use IB_RAW_PACKET_CAP_SCATTER_FCS. */ |
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IB_DEVICE_RAW_SCATTER_FCS = (1ULL << 34), |
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IB_DEVICE_RDMA_NETDEV_OPA = (1ULL << 35), |
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/* The device supports padding incoming writes to cacheline. */ |
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IB_DEVICE_PCI_WRITE_END_PADDING = (1ULL << 36), |
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IB_DEVICE_ALLOW_USER_UNREG = (1ULL << 37), |
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}; |
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enum ib_atomic_cap { |
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IB_ATOMIC_NONE, |
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IB_ATOMIC_HCA, |
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IB_ATOMIC_GLOB |
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}; |
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enum ib_odp_general_cap_bits { |
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IB_ODP_SUPPORT = 1 << 0, |
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IB_ODP_SUPPORT_IMPLICIT = 1 << 1, |
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}; |
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enum ib_odp_transport_cap_bits { |
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IB_ODP_SUPPORT_SEND = 1 << 0, |
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IB_ODP_SUPPORT_RECV = 1 << 1, |
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IB_ODP_SUPPORT_WRITE = 1 << 2, |
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IB_ODP_SUPPORT_READ = 1 << 3, |
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IB_ODP_SUPPORT_ATOMIC = 1 << 4, |
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IB_ODP_SUPPORT_SRQ_RECV = 1 << 5, |
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}; |
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struct ib_odp_caps { |
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uint64_t general_caps; |
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struct { |
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uint32_t rc_odp_caps; |
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uint32_t uc_odp_caps; |
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uint32_t ud_odp_caps; |
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uint32_t xrc_odp_caps; |
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} per_transport_caps; |
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}; |
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struct ib_rss_caps { |
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/* Corresponding bit will be set if qp type from |
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* 'enum ib_qp_type' is supported, e.g. |
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* supported_qpts |= 1 << IB_QPT_UD |
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*/ |
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u32 supported_qpts; |
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u32 max_rwq_indirection_tables; |
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u32 max_rwq_indirection_table_size; |
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}; |
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enum ib_tm_cap_flags { |
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/* Support tag matching with rendezvous offload for RC transport */ |
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IB_TM_CAP_RNDV_RC = 1 << 0, |
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}; |
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struct ib_tm_caps { |
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/* Max size of RNDV header */ |
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u32 max_rndv_hdr_size; |
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/* Max number of entries in tag matching list */ |
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u32 max_num_tags; |
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/* From enum ib_tm_cap_flags */ |
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u32 flags; |
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/* Max number of outstanding list operations */ |
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u32 max_ops; |
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/* Max number of SGE in tag matching entry */ |
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u32 max_sge; |
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}; |
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struct ib_cq_init_attr { |
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unsigned int cqe; |
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u32 comp_vector; |
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u32 flags; |
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}; |
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enum ib_cq_attr_mask { |
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IB_CQ_MODERATE = 1 << 0, |
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}; |
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struct ib_cq_caps { |
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u16 max_cq_moderation_count; |
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u16 max_cq_moderation_period; |
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}; |
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struct ib_dm_mr_attr { |
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u64 length; |
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u64 offset; |
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u32 access_flags; |
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}; |
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struct ib_dm_alloc_attr { |
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u64 length; |
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u32 alignment; |
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u32 flags; |
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}; |
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struct ib_device_attr { |
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u64 fw_ver; |
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__be64 sys_image_guid; |
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u64 max_mr_size; |
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u64 page_size_cap; |
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u32 vendor_id; |
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u32 vendor_part_id; |
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u32 hw_ver; |
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int max_qp; |
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int max_qp_wr; |
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u64 device_cap_flags; |
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int max_send_sge; |
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int max_recv_sge; |
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int max_sge_rd; |
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int max_cq; |
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int max_cqe; |
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int max_mr; |
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int max_pd; |
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int max_qp_rd_atom; |
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int max_ee_rd_atom; |
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int max_res_rd_atom; |
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int max_qp_init_rd_atom; |
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int max_ee_init_rd_atom; |
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enum ib_atomic_cap atomic_cap; |
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enum ib_atomic_cap masked_atomic_cap; |
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int max_ee; |
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int max_rdd; |
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int max_mw; |
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int max_raw_ipv6_qp; |
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int max_raw_ethy_qp; |
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int max_mcast_grp; |
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int max_mcast_qp_attach; |
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int max_total_mcast_qp_attach; |
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int max_ah; |
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int max_srq; |
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int max_srq_wr; |
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int max_srq_sge; |
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unsigned int max_fast_reg_page_list_len; |
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unsigned int max_pi_fast_reg_page_list_len; |
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u16 max_pkeys; |
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u8 local_ca_ack_delay; |
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int sig_prot_cap; |
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int sig_guard_cap; |
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struct ib_odp_caps odp_caps; |
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uint64_t timestamp_mask; |
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uint64_t hca_core_clock; /* in KHZ */ |
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struct ib_rss_caps rss_caps; |
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u32 max_wq_type_rq; |
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u32 raw_packet_caps; /* Use ib_raw_packet_caps enum */ |
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struct ib_tm_caps tm_caps; |
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struct ib_cq_caps cq_caps; |
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u64 max_dm_size; |
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/* Max entries for sgl for optimized performance per READ */ |
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u32 max_sgl_rd; |
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}; |
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|
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enum ib_mtu { |
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IB_MTU_256 = 1, |
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IB_MTU_512 = 2, |
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IB_MTU_1024 = 3, |
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IB_MTU_2048 = 4, |
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IB_MTU_4096 = 5 |
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}; |
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|
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enum opa_mtu { |
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OPA_MTU_8192 = 6, |
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OPA_MTU_10240 = 7 |
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}; |
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|
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static inline int ib_mtu_enum_to_int(enum ib_mtu mtu) |
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{ |
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switch (mtu) { |
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case IB_MTU_256: return 256; |
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case IB_MTU_512: return 512; |
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case IB_MTU_1024: return 1024; |
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case IB_MTU_2048: return 2048; |
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case IB_MTU_4096: return 4096; |
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default: return -1; |
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} |
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} |
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|
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static inline enum ib_mtu ib_mtu_int_to_enum(int mtu) |
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{ |
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if (mtu >= 4096) |
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return IB_MTU_4096; |
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else if (mtu >= 2048) |
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return IB_MTU_2048; |
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else if (mtu >= 1024) |
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return IB_MTU_1024; |
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else if (mtu >= 512) |
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return IB_MTU_512; |
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else |
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return IB_MTU_256; |
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} |
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|
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static inline int opa_mtu_enum_to_int(enum opa_mtu mtu) |
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{ |
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switch (mtu) { |
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case OPA_MTU_8192: |
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return 8192; |
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case OPA_MTU_10240: |
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return 10240; |
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default: |
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return(ib_mtu_enum_to_int((enum ib_mtu)mtu)); |
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} |
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} |
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|
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static inline enum opa_mtu opa_mtu_int_to_enum(int mtu) |
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{ |
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if (mtu >= 10240) |
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return OPA_MTU_10240; |
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else if (mtu >= 8192) |
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return OPA_MTU_8192; |
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else |
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return ((enum opa_mtu)ib_mtu_int_to_enum(mtu)); |
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} |
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|
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enum ib_port_state { |
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IB_PORT_NOP = 0, |
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IB_PORT_DOWN = 1, |
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IB_PORT_INIT = 2, |
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IB_PORT_ARMED = 3, |
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IB_PORT_ACTIVE = 4, |
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IB_PORT_ACTIVE_DEFER = 5 |
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}; |
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|
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enum ib_port_phys_state { |
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IB_PORT_PHYS_STATE_SLEEP = 1, |
|
IB_PORT_PHYS_STATE_POLLING = 2, |
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IB_PORT_PHYS_STATE_DISABLED = 3, |
|
IB_PORT_PHYS_STATE_PORT_CONFIGURATION_TRAINING = 4, |
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IB_PORT_PHYS_STATE_LINK_UP = 5, |
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IB_PORT_PHYS_STATE_LINK_ERROR_RECOVERY = 6, |
|
IB_PORT_PHYS_STATE_PHY_TEST = 7, |
|
}; |
|
|
|
enum ib_port_width { |
|
IB_WIDTH_1X = 1, |
|
IB_WIDTH_2X = 16, |
|
IB_WIDTH_4X = 2, |
|
IB_WIDTH_8X = 4, |
|
IB_WIDTH_12X = 8 |
|
}; |
|
|
|
static inline int ib_width_enum_to_int(enum ib_port_width width) |
|
{ |
|
switch (width) { |
|
case IB_WIDTH_1X: return 1; |
|
case IB_WIDTH_2X: return 2; |
|
case IB_WIDTH_4X: return 4; |
|
case IB_WIDTH_8X: return 8; |
|
case IB_WIDTH_12X: return 12; |
|
default: return -1; |
|
} |
|
} |
|
|
|
enum ib_port_speed { |
|
IB_SPEED_SDR = 1, |
|
IB_SPEED_DDR = 2, |
|
IB_SPEED_QDR = 4, |
|
IB_SPEED_FDR10 = 8, |
|
IB_SPEED_FDR = 16, |
|
IB_SPEED_EDR = 32, |
|
IB_SPEED_HDR = 64, |
|
IB_SPEED_NDR = 128, |
|
}; |
|
|
|
/** |
|
* struct rdma_hw_stats |
|
* @lock - Mutex to protect parallel write access to lifespan and values |
|
* of counters, which are 64bits and not guaranteeed to be written |
|
* atomicaly on 32bits systems. |
|
* @timestamp - Used by the core code to track when the last update was |
|
* @lifespan - Used by the core code to determine how old the counters |
|
* should be before being updated again. Stored in jiffies, defaults |
|
* to 10 milliseconds, drivers can override the default be specifying |
|
* their own value during their allocation routine. |
|
* @name - Array of pointers to static names used for the counters in |
|
* directory. |
|
* @num_counters - How many hardware counters there are. If name is |
|
* shorter than this number, a kernel oops will result. Driver authors |
|
* are encouraged to leave BUILD_BUG_ON(ARRAY_SIZE(@name) < num_counters) |
|
* in their code to prevent this. |
|
* @value - Array of u64 counters that are accessed by the sysfs code and |
|
* filled in by the drivers get_stats routine |
|
*/ |
|
struct rdma_hw_stats { |
|
struct mutex lock; /* Protect lifespan and values[] */ |
|
unsigned long timestamp; |
|
unsigned long lifespan; |
|
const char * const *names; |
|
int num_counters; |
|
u64 value[]; |
|
}; |
|
|
|
#define RDMA_HW_STATS_DEFAULT_LIFESPAN 10 |
|
/** |
|
* rdma_alloc_hw_stats_struct - Helper function to allocate dynamic struct |
|
* for drivers. |
|
* @names - Array of static const char * |
|
* @num_counters - How many elements in array |
|
* @lifespan - How many milliseconds between updates |
|
*/ |
|
static inline struct rdma_hw_stats *rdma_alloc_hw_stats_struct( |
|
const char * const *names, int num_counters, |
|
unsigned long lifespan) |
|
{ |
|
struct rdma_hw_stats *stats; |
|
|
|
stats = kzalloc(sizeof(*stats) + num_counters * sizeof(u64), |
|
GFP_KERNEL); |
|
if (!stats) |
|
return NULL; |
|
stats->names = names; |
|
stats->num_counters = num_counters; |
|
stats->lifespan = msecs_to_jiffies(lifespan); |
|
|
|
return stats; |
|
} |
|
|
|
|
|
/* Define bits for the various functionality this port needs to be supported by |
|
* the core. |
|
*/ |
|
/* Management 0x00000FFF */ |
|
#define RDMA_CORE_CAP_IB_MAD 0x00000001 |
|
#define RDMA_CORE_CAP_IB_SMI 0x00000002 |
|
#define RDMA_CORE_CAP_IB_CM 0x00000004 |
|
#define RDMA_CORE_CAP_IW_CM 0x00000008 |
|
#define RDMA_CORE_CAP_IB_SA 0x00000010 |
|
#define RDMA_CORE_CAP_OPA_MAD 0x00000020 |
|
|
|
/* Address format 0x000FF000 */ |
|
#define RDMA_CORE_CAP_AF_IB 0x00001000 |
|
#define RDMA_CORE_CAP_ETH_AH 0x00002000 |
|
#define RDMA_CORE_CAP_OPA_AH 0x00004000 |
|
#define RDMA_CORE_CAP_IB_GRH_REQUIRED 0x00008000 |
|
|
|
/* Protocol 0xFFF00000 */ |
|
#define RDMA_CORE_CAP_PROT_IB 0x00100000 |
|
#define RDMA_CORE_CAP_PROT_ROCE 0x00200000 |
|
#define RDMA_CORE_CAP_PROT_IWARP 0x00400000 |
|
#define RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP 0x00800000 |
|
#define RDMA_CORE_CAP_PROT_RAW_PACKET 0x01000000 |
|
#define RDMA_CORE_CAP_PROT_USNIC 0x02000000 |
|
|
|
#define RDMA_CORE_PORT_IB_GRH_REQUIRED (RDMA_CORE_CAP_IB_GRH_REQUIRED \ |
|
| RDMA_CORE_CAP_PROT_ROCE \ |
|
| RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP) |
|
|
|
#define RDMA_CORE_PORT_IBA_IB (RDMA_CORE_CAP_PROT_IB \ |
|
| RDMA_CORE_CAP_IB_MAD \ |
|
| RDMA_CORE_CAP_IB_SMI \ |
|
| RDMA_CORE_CAP_IB_CM \ |
|
| RDMA_CORE_CAP_IB_SA \ |
|
| RDMA_CORE_CAP_AF_IB) |
|
#define RDMA_CORE_PORT_IBA_ROCE (RDMA_CORE_CAP_PROT_ROCE \ |
|
| RDMA_CORE_CAP_IB_MAD \ |
|
| RDMA_CORE_CAP_IB_CM \ |
|
| RDMA_CORE_CAP_AF_IB \ |
|
| RDMA_CORE_CAP_ETH_AH) |
|
#define RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP \ |
|
(RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP \ |
|
| RDMA_CORE_CAP_IB_MAD \ |
|
| RDMA_CORE_CAP_IB_CM \ |
|
| RDMA_CORE_CAP_AF_IB \ |
|
| RDMA_CORE_CAP_ETH_AH) |
|
#define RDMA_CORE_PORT_IWARP (RDMA_CORE_CAP_PROT_IWARP \ |
|
| RDMA_CORE_CAP_IW_CM) |
|
#define RDMA_CORE_PORT_INTEL_OPA (RDMA_CORE_PORT_IBA_IB \ |
|
| RDMA_CORE_CAP_OPA_MAD) |
|
|
|
#define RDMA_CORE_PORT_RAW_PACKET (RDMA_CORE_CAP_PROT_RAW_PACKET) |
|
|
|
#define RDMA_CORE_PORT_USNIC (RDMA_CORE_CAP_PROT_USNIC) |
|
|
|
struct ib_port_attr { |
|
u64 subnet_prefix; |
|
enum ib_port_state state; |
|
enum ib_mtu max_mtu; |
|
enum ib_mtu active_mtu; |
|
u32 phys_mtu; |
|
int gid_tbl_len; |
|
unsigned int ip_gids:1; |
|
/* This is the value from PortInfo CapabilityMask, defined by IBA */ |
|
u32 port_cap_flags; |
|
u32 max_msg_sz; |
|
u32 bad_pkey_cntr; |
|
u32 qkey_viol_cntr; |
|
u16 pkey_tbl_len; |
|
u32 sm_lid; |
|
u32 lid; |
|
u8 lmc; |
|
u8 max_vl_num; |
|
u8 sm_sl; |
|
u8 subnet_timeout; |
|
u8 init_type_reply; |
|
u8 active_width; |
|
u16 active_speed; |
|
u8 phys_state; |
|
u16 port_cap_flags2; |
|
}; |
|
|
|
enum ib_device_modify_flags { |
|
IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0, |
|
IB_DEVICE_MODIFY_NODE_DESC = 1 << 1 |
|
}; |
|
|
|
#define IB_DEVICE_NODE_DESC_MAX 64 |
|
|
|
struct ib_device_modify { |
|
u64 sys_image_guid; |
|
char node_desc[IB_DEVICE_NODE_DESC_MAX]; |
|
}; |
|
|
|
enum ib_port_modify_flags { |
|
IB_PORT_SHUTDOWN = 1, |
|
IB_PORT_INIT_TYPE = (1<<2), |
|
IB_PORT_RESET_QKEY_CNTR = (1<<3), |
|
IB_PORT_OPA_MASK_CHG = (1<<4) |
|
}; |
|
|
|
struct ib_port_modify { |
|
u32 set_port_cap_mask; |
|
u32 clr_port_cap_mask; |
|
u8 init_type; |
|
}; |
|
|
|
enum ib_event_type { |
|
IB_EVENT_CQ_ERR, |
|
IB_EVENT_QP_FATAL, |
|
IB_EVENT_QP_REQ_ERR, |
|
IB_EVENT_QP_ACCESS_ERR, |
|
IB_EVENT_COMM_EST, |
|
IB_EVENT_SQ_DRAINED, |
|
IB_EVENT_PATH_MIG, |
|
IB_EVENT_PATH_MIG_ERR, |
|
IB_EVENT_DEVICE_FATAL, |
|
IB_EVENT_PORT_ACTIVE, |
|
IB_EVENT_PORT_ERR, |
|
IB_EVENT_LID_CHANGE, |
|
IB_EVENT_PKEY_CHANGE, |
|
IB_EVENT_SM_CHANGE, |
|
IB_EVENT_SRQ_ERR, |
|
IB_EVENT_SRQ_LIMIT_REACHED, |
|
IB_EVENT_QP_LAST_WQE_REACHED, |
|
IB_EVENT_CLIENT_REREGISTER, |
|
IB_EVENT_GID_CHANGE, |
|
IB_EVENT_WQ_FATAL, |
|
}; |
|
|
|
const char *__attribute_const__ ib_event_msg(enum ib_event_type event); |
|
|
|
struct ib_event { |
|
struct ib_device *device; |
|
union { |
|
struct ib_cq *cq; |
|
struct ib_qp *qp; |
|
struct ib_srq *srq; |
|
struct ib_wq *wq; |
|
u8 port_num; |
|
} element; |
|
enum ib_event_type event; |
|
}; |
|
|
|
struct ib_event_handler { |
|
struct ib_device *device; |
|
void (*handler)(struct ib_event_handler *, struct ib_event *); |
|
struct list_head list; |
|
}; |
|
|
|
#define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \ |
|
do { \ |
|
(_ptr)->device = _device; \ |
|
(_ptr)->handler = _handler; \ |
|
INIT_LIST_HEAD(&(_ptr)->list); \ |
|
} while (0) |
|
|
|
struct ib_global_route { |
|
const struct ib_gid_attr *sgid_attr; |
|
union ib_gid dgid; |
|
u32 flow_label; |
|
u8 sgid_index; |
|
u8 hop_limit; |
|
u8 traffic_class; |
|
}; |
|
|
|
struct ib_grh { |
|
__be32 version_tclass_flow; |
|
__be16 paylen; |
|
u8 next_hdr; |
|
u8 hop_limit; |
|
union ib_gid sgid; |
|
union ib_gid dgid; |
|
}; |
|
|
|
union rdma_network_hdr { |
|
struct ib_grh ibgrh; |
|
struct { |
|
/* The IB spec states that if it's IPv4, the header |
|
* is located in the last 20 bytes of the header. |
|
*/ |
|
u8 reserved[20]; |
|
struct iphdr roce4grh; |
|
}; |
|
}; |
|
|
|
#define IB_QPN_MASK 0xFFFFFF |
|
|
|
enum { |
|
IB_MULTICAST_QPN = 0xffffff |
|
}; |
|
|
|
#define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF) |
|
#define IB_MULTICAST_LID_BASE cpu_to_be16(0xC000) |
|
|
|
enum ib_ah_flags { |
|
IB_AH_GRH = 1 |
|
}; |
|
|
|
enum ib_rate { |
|
IB_RATE_PORT_CURRENT = 0, |
|
IB_RATE_2_5_GBPS = 2, |
|
IB_RATE_5_GBPS = 5, |
|
IB_RATE_10_GBPS = 3, |
|
IB_RATE_20_GBPS = 6, |
|
IB_RATE_30_GBPS = 4, |
|
IB_RATE_40_GBPS = 7, |
|
IB_RATE_60_GBPS = 8, |
|
IB_RATE_80_GBPS = 9, |
|
IB_RATE_120_GBPS = 10, |
|
IB_RATE_14_GBPS = 11, |
|
IB_RATE_56_GBPS = 12, |
|
IB_RATE_112_GBPS = 13, |
|
IB_RATE_168_GBPS = 14, |
|
IB_RATE_25_GBPS = 15, |
|
IB_RATE_100_GBPS = 16, |
|
IB_RATE_200_GBPS = 17, |
|
IB_RATE_300_GBPS = 18, |
|
IB_RATE_28_GBPS = 19, |
|
IB_RATE_50_GBPS = 20, |
|
IB_RATE_400_GBPS = 21, |
|
IB_RATE_600_GBPS = 22, |
|
}; |
|
|
|
/** |
|
* ib_rate_to_mult - Convert the IB rate enum to a multiple of the |
|
* base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be |
|
* converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec. |
|
* @rate: rate to convert. |
|
*/ |
|
__attribute_const__ int ib_rate_to_mult(enum ib_rate rate); |
|
|
|
/** |
|
* ib_rate_to_mbps - Convert the IB rate enum to Mbps. |
|
* For example, IB_RATE_2_5_GBPS will be converted to 2500. |
|
* @rate: rate to convert. |
|
*/ |
|
__attribute_const__ int ib_rate_to_mbps(enum ib_rate rate); |
|
|
|
|
|
/** |
|
* enum ib_mr_type - memory region type |
|
* @IB_MR_TYPE_MEM_REG: memory region that is used for |
|
* normal registration |
|
* @IB_MR_TYPE_SG_GAPS: memory region that is capable to |
|
* register any arbitrary sg lists (without |
|
* the normal mr constraints - see |
|
* ib_map_mr_sg) |
|
* @IB_MR_TYPE_DM: memory region that is used for device |
|
* memory registration |
|
* @IB_MR_TYPE_USER: memory region that is used for the user-space |
|
* application |
|
* @IB_MR_TYPE_DMA: memory region that is used for DMA operations |
|
* without address translations (VA=PA) |
|
* @IB_MR_TYPE_INTEGRITY: memory region that is used for |
|
* data integrity operations |
|
*/ |
|
enum ib_mr_type { |
|
IB_MR_TYPE_MEM_REG, |
|
IB_MR_TYPE_SG_GAPS, |
|
IB_MR_TYPE_DM, |
|
IB_MR_TYPE_USER, |
|
IB_MR_TYPE_DMA, |
|
IB_MR_TYPE_INTEGRITY, |
|
}; |
|
|
|
enum ib_mr_status_check { |
|
IB_MR_CHECK_SIG_STATUS = 1, |
|
}; |
|
|
|
/** |
|
* struct ib_mr_status - Memory region status container |
|
* |
|
* @fail_status: Bitmask of MR checks status. For each |
|
* failed check a corresponding status bit is set. |
|
* @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS |
|
* failure. |
|
*/ |
|
struct ib_mr_status { |
|
u32 fail_status; |
|
struct ib_sig_err sig_err; |
|
}; |
|
|
|
/** |
|
* mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate |
|
* enum. |
|
* @mult: multiple to convert. |
|
*/ |
|
__attribute_const__ enum ib_rate mult_to_ib_rate(int mult); |
|
|
|
struct rdma_ah_init_attr { |
|
struct rdma_ah_attr *ah_attr; |
|
u32 flags; |
|
struct net_device *xmit_slave; |
|
}; |
|
|
|
enum rdma_ah_attr_type { |
|
RDMA_AH_ATTR_TYPE_UNDEFINED, |
|
RDMA_AH_ATTR_TYPE_IB, |
|
RDMA_AH_ATTR_TYPE_ROCE, |
|
RDMA_AH_ATTR_TYPE_OPA, |
|
}; |
|
|
|
struct ib_ah_attr { |
|
u16 dlid; |
|
u8 src_path_bits; |
|
}; |
|
|
|
struct roce_ah_attr { |
|
u8 dmac[ETH_ALEN]; |
|
}; |
|
|
|
struct opa_ah_attr { |
|
u32 dlid; |
|
u8 src_path_bits; |
|
bool make_grd; |
|
}; |
|
|
|
struct rdma_ah_attr { |
|
struct ib_global_route grh; |
|
u8 sl; |
|
u8 static_rate; |
|
u8 port_num; |
|
u8 ah_flags; |
|
enum rdma_ah_attr_type type; |
|
union { |
|
struct ib_ah_attr ib; |
|
struct roce_ah_attr roce; |
|
struct opa_ah_attr opa; |
|
}; |
|
}; |
|
|
|
enum ib_wc_status { |
|
IB_WC_SUCCESS, |
|
IB_WC_LOC_LEN_ERR, |
|
IB_WC_LOC_QP_OP_ERR, |
|
IB_WC_LOC_EEC_OP_ERR, |
|
IB_WC_LOC_PROT_ERR, |
|
IB_WC_WR_FLUSH_ERR, |
|
IB_WC_MW_BIND_ERR, |
|
IB_WC_BAD_RESP_ERR, |
|
IB_WC_LOC_ACCESS_ERR, |
|
IB_WC_REM_INV_REQ_ERR, |
|
IB_WC_REM_ACCESS_ERR, |
|
IB_WC_REM_OP_ERR, |
|
IB_WC_RETRY_EXC_ERR, |
|
IB_WC_RNR_RETRY_EXC_ERR, |
|
IB_WC_LOC_RDD_VIOL_ERR, |
|
IB_WC_REM_INV_RD_REQ_ERR, |
|
IB_WC_REM_ABORT_ERR, |
|
IB_WC_INV_EECN_ERR, |
|
IB_WC_INV_EEC_STATE_ERR, |
|
IB_WC_FATAL_ERR, |
|
IB_WC_RESP_TIMEOUT_ERR, |
|
IB_WC_GENERAL_ERR |
|
}; |
|
|
|
const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status); |
|
|
|
enum ib_wc_opcode { |
|
IB_WC_SEND = IB_UVERBS_WC_SEND, |
|
IB_WC_RDMA_WRITE = IB_UVERBS_WC_RDMA_WRITE, |
|
IB_WC_RDMA_READ = IB_UVERBS_WC_RDMA_READ, |
|
IB_WC_COMP_SWAP = IB_UVERBS_WC_COMP_SWAP, |
|
IB_WC_FETCH_ADD = IB_UVERBS_WC_FETCH_ADD, |
|
IB_WC_BIND_MW = IB_UVERBS_WC_BIND_MW, |
|
IB_WC_LOCAL_INV = IB_UVERBS_WC_LOCAL_INV, |
|
IB_WC_LSO = IB_UVERBS_WC_TSO, |
|
IB_WC_REG_MR, |
|
IB_WC_MASKED_COMP_SWAP, |
|
IB_WC_MASKED_FETCH_ADD, |
|
/* |
|
* Set value of IB_WC_RECV so consumers can test if a completion is a |
|
* receive by testing (opcode & IB_WC_RECV). |
|
*/ |
|
IB_WC_RECV = 1 << 7, |
|
IB_WC_RECV_RDMA_WITH_IMM |
|
}; |
|
|
|
enum ib_wc_flags { |
|
IB_WC_GRH = 1, |
|
IB_WC_WITH_IMM = (1<<1), |
|
IB_WC_WITH_INVALIDATE = (1<<2), |
|
IB_WC_IP_CSUM_OK = (1<<3), |
|
IB_WC_WITH_SMAC = (1<<4), |
|
IB_WC_WITH_VLAN = (1<<5), |
|
IB_WC_WITH_NETWORK_HDR_TYPE = (1<<6), |
|
}; |
|
|
|
struct ib_wc { |
|
union { |
|
u64 wr_id; |
|
struct ib_cqe *wr_cqe; |
|
}; |
|
enum ib_wc_status status; |
|
enum ib_wc_opcode opcode; |
|
u32 vendor_err; |
|
u32 byte_len; |
|
struct ib_qp *qp; |
|
union { |
|
__be32 imm_data; |
|
u32 invalidate_rkey; |
|
} ex; |
|
u32 src_qp; |
|
u32 slid; |
|
int wc_flags; |
|
u16 pkey_index; |
|
u8 sl; |
|
u8 dlid_path_bits; |
|
u8 port_num; /* valid only for DR SMPs on switches */ |
|
u8 smac[ETH_ALEN]; |
|
u16 vlan_id; |
|
u8 network_hdr_type; |
|
}; |
|
|
|
enum ib_cq_notify_flags { |
|
IB_CQ_SOLICITED = 1 << 0, |
|
IB_CQ_NEXT_COMP = 1 << 1, |
|
IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP, |
|
IB_CQ_REPORT_MISSED_EVENTS = 1 << 2, |
|
}; |
|
|
|
enum ib_srq_type { |
|
IB_SRQT_BASIC = IB_UVERBS_SRQT_BASIC, |
|
IB_SRQT_XRC = IB_UVERBS_SRQT_XRC, |
|
IB_SRQT_TM = IB_UVERBS_SRQT_TM, |
|
}; |
|
|
|
static inline bool ib_srq_has_cq(enum ib_srq_type srq_type) |
|
{ |
|
return srq_type == IB_SRQT_XRC || |
|
srq_type == IB_SRQT_TM; |
|
} |
|
|
|
enum ib_srq_attr_mask { |
|
IB_SRQ_MAX_WR = 1 << 0, |
|
IB_SRQ_LIMIT = 1 << 1, |
|
}; |
|
|
|
struct ib_srq_attr { |
|
u32 max_wr; |
|
u32 max_sge; |
|
u32 srq_limit; |
|
}; |
|
|
|
struct ib_srq_init_attr { |
|
void (*event_handler)(struct ib_event *, void *); |
|
void *srq_context; |
|
struct ib_srq_attr attr; |
|
enum ib_srq_type srq_type; |
|
|
|
struct { |
|
struct ib_cq *cq; |
|
union { |
|
struct { |
|
struct ib_xrcd *xrcd; |
|
} xrc; |
|
|
|
struct { |
|
u32 max_num_tags; |
|
} tag_matching; |
|
}; |
|
} ext; |
|
}; |
|
|
|
struct ib_qp_cap { |
|
u32 max_send_wr; |
|
u32 max_recv_wr; |
|
u32 max_send_sge; |
|
u32 max_recv_sge; |
|
u32 max_inline_data; |
|
|
|
/* |
|
* Maximum number of rdma_rw_ctx structures in flight at a time. |
|
* ib_create_qp() will calculate the right amount of neededed WRs |
|
* and MRs based on this. |
|
*/ |
|
u32 max_rdma_ctxs; |
|
}; |
|
|
|
enum ib_sig_type { |
|
IB_SIGNAL_ALL_WR, |
|
IB_SIGNAL_REQ_WR |
|
}; |
|
|
|
enum ib_qp_type { |
|
/* |
|
* IB_QPT_SMI and IB_QPT_GSI have to be the first two entries |
|
* here (and in that order) since the MAD layer uses them as |
|
* indices into a 2-entry table. |
|
*/ |
|
IB_QPT_SMI, |
|
IB_QPT_GSI, |
|
|
|
IB_QPT_RC = IB_UVERBS_QPT_RC, |
|
IB_QPT_UC = IB_UVERBS_QPT_UC, |
|
IB_QPT_UD = IB_UVERBS_QPT_UD, |
|
IB_QPT_RAW_IPV6, |
|
IB_QPT_RAW_ETHERTYPE, |
|
IB_QPT_RAW_PACKET = IB_UVERBS_QPT_RAW_PACKET, |
|
IB_QPT_XRC_INI = IB_UVERBS_QPT_XRC_INI, |
|
IB_QPT_XRC_TGT = IB_UVERBS_QPT_XRC_TGT, |
|
IB_QPT_MAX, |
|
IB_QPT_DRIVER = IB_UVERBS_QPT_DRIVER, |
|
/* Reserve a range for qp types internal to the low level driver. |
|
* These qp types will not be visible at the IB core layer, so the |
|
* IB_QPT_MAX usages should not be affected in the core layer |
|
*/ |
|
IB_QPT_RESERVED1 = 0x1000, |
|
IB_QPT_RESERVED2, |
|
IB_QPT_RESERVED3, |
|
IB_QPT_RESERVED4, |
|
IB_QPT_RESERVED5, |
|
IB_QPT_RESERVED6, |
|
IB_QPT_RESERVED7, |
|
IB_QPT_RESERVED8, |
|
IB_QPT_RESERVED9, |
|
IB_QPT_RESERVED10, |
|
}; |
|
|
|
enum ib_qp_create_flags { |
|
IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0, |
|
IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = |
|
IB_UVERBS_QP_CREATE_BLOCK_MULTICAST_LOOPBACK, |
|
IB_QP_CREATE_CROSS_CHANNEL = 1 << 2, |
|
IB_QP_CREATE_MANAGED_SEND = 1 << 3, |
|
IB_QP_CREATE_MANAGED_RECV = 1 << 4, |
|
IB_QP_CREATE_NETIF_QP = 1 << 5, |
|
IB_QP_CREATE_INTEGRITY_EN = 1 << 6, |
|
IB_QP_CREATE_NETDEV_USE = 1 << 7, |
|
IB_QP_CREATE_SCATTER_FCS = |
|
IB_UVERBS_QP_CREATE_SCATTER_FCS, |
|
IB_QP_CREATE_CVLAN_STRIPPING = |
|
IB_UVERBS_QP_CREATE_CVLAN_STRIPPING, |
|
IB_QP_CREATE_SOURCE_QPN = 1 << 10, |
|
IB_QP_CREATE_PCI_WRITE_END_PADDING = |
|
IB_UVERBS_QP_CREATE_PCI_WRITE_END_PADDING, |
|
/* reserve bits 26-31 for low level drivers' internal use */ |
|
IB_QP_CREATE_RESERVED_START = 1 << 26, |
|
IB_QP_CREATE_RESERVED_END = 1 << 31, |
|
}; |
|
|
|
/* |
|
* Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler |
|
* callback to destroy the passed in QP. |
|
*/ |
|
|
|
struct ib_qp_init_attr { |
|
/* Consumer's event_handler callback must not block */ |
|
void (*event_handler)(struct ib_event *, void *); |
|
|
|
void *qp_context; |
|
struct ib_cq *send_cq; |
|
struct ib_cq *recv_cq; |
|
struct ib_srq *srq; |
|
struct ib_xrcd *xrcd; /* XRC TGT QPs only */ |
|
struct ib_qp_cap cap; |
|
enum ib_sig_type sq_sig_type; |
|
enum ib_qp_type qp_type; |
|
u32 create_flags; |
|
|
|
/* |
|
* Only needed for special QP types, or when using the RW API. |
|
*/ |
|
u8 port_num; |
|
struct ib_rwq_ind_table *rwq_ind_tbl; |
|
u32 source_qpn; |
|
}; |
|
|
|
struct ib_qp_open_attr { |
|
void (*event_handler)(struct ib_event *, void *); |
|
void *qp_context; |
|
u32 qp_num; |
|
enum ib_qp_type qp_type; |
|
}; |
|
|
|
enum ib_rnr_timeout { |
|
IB_RNR_TIMER_655_36 = 0, |
|
IB_RNR_TIMER_000_01 = 1, |
|
IB_RNR_TIMER_000_02 = 2, |
|
IB_RNR_TIMER_000_03 = 3, |
|
IB_RNR_TIMER_000_04 = 4, |
|
IB_RNR_TIMER_000_06 = 5, |
|
IB_RNR_TIMER_000_08 = 6, |
|
IB_RNR_TIMER_000_12 = 7, |
|
IB_RNR_TIMER_000_16 = 8, |
|
IB_RNR_TIMER_000_24 = 9, |
|
IB_RNR_TIMER_000_32 = 10, |
|
IB_RNR_TIMER_000_48 = 11, |
|
IB_RNR_TIMER_000_64 = 12, |
|
IB_RNR_TIMER_000_96 = 13, |
|
IB_RNR_TIMER_001_28 = 14, |
|
IB_RNR_TIMER_001_92 = 15, |
|
IB_RNR_TIMER_002_56 = 16, |
|
IB_RNR_TIMER_003_84 = 17, |
|
IB_RNR_TIMER_005_12 = 18, |
|
IB_RNR_TIMER_007_68 = 19, |
|
IB_RNR_TIMER_010_24 = 20, |
|
IB_RNR_TIMER_015_36 = 21, |
|
IB_RNR_TIMER_020_48 = 22, |
|
IB_RNR_TIMER_030_72 = 23, |
|
IB_RNR_TIMER_040_96 = 24, |
|
IB_RNR_TIMER_061_44 = 25, |
|
IB_RNR_TIMER_081_92 = 26, |
|
IB_RNR_TIMER_122_88 = 27, |
|
IB_RNR_TIMER_163_84 = 28, |
|
IB_RNR_TIMER_245_76 = 29, |
|
IB_RNR_TIMER_327_68 = 30, |
|
IB_RNR_TIMER_491_52 = 31 |
|
}; |
|
|
|
enum ib_qp_attr_mask { |
|
IB_QP_STATE = 1, |
|
IB_QP_CUR_STATE = (1<<1), |
|
IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2), |
|
IB_QP_ACCESS_FLAGS = (1<<3), |
|
IB_QP_PKEY_INDEX = (1<<4), |
|
IB_QP_PORT = (1<<5), |
|
IB_QP_QKEY = (1<<6), |
|
IB_QP_AV = (1<<7), |
|
IB_QP_PATH_MTU = (1<<8), |
|
IB_QP_TIMEOUT = (1<<9), |
|
IB_QP_RETRY_CNT = (1<<10), |
|
IB_QP_RNR_RETRY = (1<<11), |
|
IB_QP_RQ_PSN = (1<<12), |
|
IB_QP_MAX_QP_RD_ATOMIC = (1<<13), |
|
IB_QP_ALT_PATH = (1<<14), |
|
IB_QP_MIN_RNR_TIMER = (1<<15), |
|
IB_QP_SQ_PSN = (1<<16), |
|
IB_QP_MAX_DEST_RD_ATOMIC = (1<<17), |
|
IB_QP_PATH_MIG_STATE = (1<<18), |
|
IB_QP_CAP = (1<<19), |
|
IB_QP_DEST_QPN = (1<<20), |
|
IB_QP_RESERVED1 = (1<<21), |
|
IB_QP_RESERVED2 = (1<<22), |
|
IB_QP_RESERVED3 = (1<<23), |
|
IB_QP_RESERVED4 = (1<<24), |
|
IB_QP_RATE_LIMIT = (1<<25), |
|
|
|
IB_QP_ATTR_STANDARD_BITS = GENMASK(20, 0), |
|
}; |
|
|
|
enum ib_qp_state { |
|
IB_QPS_RESET, |
|
IB_QPS_INIT, |
|
IB_QPS_RTR, |
|
IB_QPS_RTS, |
|
IB_QPS_SQD, |
|
IB_QPS_SQE, |
|
IB_QPS_ERR |
|
}; |
|
|
|
enum ib_mig_state { |
|
IB_MIG_MIGRATED, |
|
IB_MIG_REARM, |
|
IB_MIG_ARMED |
|
}; |
|
|
|
enum ib_mw_type { |
|
IB_MW_TYPE_1 = 1, |
|
IB_MW_TYPE_2 = 2 |
|
}; |
|
|
|
struct ib_qp_attr { |
|
enum ib_qp_state qp_state; |
|
enum ib_qp_state cur_qp_state; |
|
enum ib_mtu path_mtu; |
|
enum ib_mig_state path_mig_state; |
|
u32 qkey; |
|
u32 rq_psn; |
|
u32 sq_psn; |
|
u32 dest_qp_num; |
|
int qp_access_flags; |
|
struct ib_qp_cap cap; |
|
struct rdma_ah_attr ah_attr; |
|
struct rdma_ah_attr alt_ah_attr; |
|
u16 pkey_index; |
|
u16 alt_pkey_index; |
|
u8 en_sqd_async_notify; |
|
u8 sq_draining; |
|
u8 max_rd_atomic; |
|
u8 max_dest_rd_atomic; |
|
u8 min_rnr_timer; |
|
u8 port_num; |
|
u8 timeout; |
|
u8 retry_cnt; |
|
u8 rnr_retry; |
|
u8 alt_port_num; |
|
u8 alt_timeout; |
|
u32 rate_limit; |
|
struct net_device *xmit_slave; |
|
}; |
|
|
|
enum ib_wr_opcode { |
|
/* These are shared with userspace */ |
|
IB_WR_RDMA_WRITE = IB_UVERBS_WR_RDMA_WRITE, |
|
IB_WR_RDMA_WRITE_WITH_IMM = IB_UVERBS_WR_RDMA_WRITE_WITH_IMM, |
|
IB_WR_SEND = IB_UVERBS_WR_SEND, |
|
IB_WR_SEND_WITH_IMM = IB_UVERBS_WR_SEND_WITH_IMM, |
|
IB_WR_RDMA_READ = IB_UVERBS_WR_RDMA_READ, |
|
IB_WR_ATOMIC_CMP_AND_SWP = IB_UVERBS_WR_ATOMIC_CMP_AND_SWP, |
|
IB_WR_ATOMIC_FETCH_AND_ADD = IB_UVERBS_WR_ATOMIC_FETCH_AND_ADD, |
|
IB_WR_BIND_MW = IB_UVERBS_WR_BIND_MW, |
|
IB_WR_LSO = IB_UVERBS_WR_TSO, |
|
IB_WR_SEND_WITH_INV = IB_UVERBS_WR_SEND_WITH_INV, |
|
IB_WR_RDMA_READ_WITH_INV = IB_UVERBS_WR_RDMA_READ_WITH_INV, |
|
IB_WR_LOCAL_INV = IB_UVERBS_WR_LOCAL_INV, |
|
IB_WR_MASKED_ATOMIC_CMP_AND_SWP = |
|
IB_UVERBS_WR_MASKED_ATOMIC_CMP_AND_SWP, |
|
IB_WR_MASKED_ATOMIC_FETCH_AND_ADD = |
|
IB_UVERBS_WR_MASKED_ATOMIC_FETCH_AND_ADD, |
|
|
|
/* These are kernel only and can not be issued by userspace */ |
|
IB_WR_REG_MR = 0x20, |
|
IB_WR_REG_MR_INTEGRITY, |
|
|
|
/* reserve values for low level drivers' internal use. |
|
* These values will not be used at all in the ib core layer. |
|
*/ |
|
IB_WR_RESERVED1 = 0xf0, |
|
IB_WR_RESERVED2, |
|
IB_WR_RESERVED3, |
|
IB_WR_RESERVED4, |
|
IB_WR_RESERVED5, |
|
IB_WR_RESERVED6, |
|
IB_WR_RESERVED7, |
|
IB_WR_RESERVED8, |
|
IB_WR_RESERVED9, |
|
IB_WR_RESERVED10, |
|
}; |
|
|
|
enum ib_send_flags { |
|
IB_SEND_FENCE = 1, |
|
IB_SEND_SIGNALED = (1<<1), |
|
IB_SEND_SOLICITED = (1<<2), |
|
IB_SEND_INLINE = (1<<3), |
|
IB_SEND_IP_CSUM = (1<<4), |
|
|
|
/* reserve bits 26-31 for low level drivers' internal use */ |
|
IB_SEND_RESERVED_START = (1 << 26), |
|
IB_SEND_RESERVED_END = (1 << 31), |
|
}; |
|
|
|
struct ib_sge { |
|
u64 addr; |
|
u32 length; |
|
u32 lkey; |
|
}; |
|
|
|
struct ib_cqe { |
|
void (*done)(struct ib_cq *cq, struct ib_wc *wc); |
|
}; |
|
|
|
struct ib_send_wr { |
|
struct ib_send_wr *next; |
|
union { |
|
u64 wr_id; |
|
struct ib_cqe *wr_cqe; |
|
}; |
|
struct ib_sge *sg_list; |
|
int num_sge; |
|
enum ib_wr_opcode opcode; |
|
int send_flags; |
|
union { |
|
__be32 imm_data; |
|
u32 invalidate_rkey; |
|
} ex; |
|
}; |
|
|
|
struct ib_rdma_wr { |
|
struct ib_send_wr wr; |
|
u64 remote_addr; |
|
u32 rkey; |
|
}; |
|
|
|
static inline const struct ib_rdma_wr *rdma_wr(const struct ib_send_wr *wr) |
|
{ |
|
return container_of(wr, struct ib_rdma_wr, wr); |
|
} |
|
|
|
struct ib_atomic_wr { |
|
struct ib_send_wr wr; |
|
u64 remote_addr; |
|
u64 compare_add; |
|
u64 swap; |
|
u64 compare_add_mask; |
|
u64 swap_mask; |
|
u32 rkey; |
|
}; |
|
|
|
static inline const struct ib_atomic_wr *atomic_wr(const struct ib_send_wr *wr) |
|
{ |
|
return container_of(wr, struct ib_atomic_wr, wr); |
|
} |
|
|
|
struct ib_ud_wr { |
|
struct ib_send_wr wr; |
|
struct ib_ah *ah; |
|
void *header; |
|
int hlen; |
|
int mss; |
|
u32 remote_qpn; |
|
u32 remote_qkey; |
|
u16 pkey_index; /* valid for GSI only */ |
|
u8 port_num; /* valid for DR SMPs on switch only */ |
|
}; |
|
|
|
static inline const struct ib_ud_wr *ud_wr(const struct ib_send_wr *wr) |
|
{ |
|
return container_of(wr, struct ib_ud_wr, wr); |
|
} |
|
|
|
struct ib_reg_wr { |
|
struct ib_send_wr wr; |
|
struct ib_mr *mr; |
|
u32 key; |
|
int access; |
|
}; |
|
|
|
static inline const struct ib_reg_wr *reg_wr(const struct ib_send_wr *wr) |
|
{ |
|
return container_of(wr, struct ib_reg_wr, wr); |
|
} |
|
|
|
struct ib_recv_wr { |
|
struct ib_recv_wr *next; |
|
union { |
|
u64 wr_id; |
|
struct ib_cqe *wr_cqe; |
|
}; |
|
struct ib_sge *sg_list; |
|
int num_sge; |
|
}; |
|
|
|
enum ib_access_flags { |
|
IB_ACCESS_LOCAL_WRITE = IB_UVERBS_ACCESS_LOCAL_WRITE, |
|
IB_ACCESS_REMOTE_WRITE = IB_UVERBS_ACCESS_REMOTE_WRITE, |
|
IB_ACCESS_REMOTE_READ = IB_UVERBS_ACCESS_REMOTE_READ, |
|
IB_ACCESS_REMOTE_ATOMIC = IB_UVERBS_ACCESS_REMOTE_ATOMIC, |
|
IB_ACCESS_MW_BIND = IB_UVERBS_ACCESS_MW_BIND, |
|
IB_ZERO_BASED = IB_UVERBS_ACCESS_ZERO_BASED, |
|
IB_ACCESS_ON_DEMAND = IB_UVERBS_ACCESS_ON_DEMAND, |
|
IB_ACCESS_HUGETLB = IB_UVERBS_ACCESS_HUGETLB, |
|
IB_ACCESS_RELAXED_ORDERING = IB_UVERBS_ACCESS_RELAXED_ORDERING, |
|
|
|
IB_ACCESS_OPTIONAL = IB_UVERBS_ACCESS_OPTIONAL_RANGE, |
|
IB_ACCESS_SUPPORTED = |
|
((IB_ACCESS_HUGETLB << 1) - 1) | IB_ACCESS_OPTIONAL, |
|
}; |
|
|
|
/* |
|
* XXX: these are apparently used for ->rereg_user_mr, no idea why they |
|
* are hidden here instead of a uapi header! |
|
*/ |
|
enum ib_mr_rereg_flags { |
|
IB_MR_REREG_TRANS = 1, |
|
IB_MR_REREG_PD = (1<<1), |
|
IB_MR_REREG_ACCESS = (1<<2), |
|
IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1) |
|
}; |
|
|
|
struct ib_umem; |
|
|
|
enum rdma_remove_reason { |
|
/* |
|
* Userspace requested uobject deletion or initial try |
|
* to remove uobject via cleanup. Call could fail |
|
*/ |
|
RDMA_REMOVE_DESTROY, |
|
/* Context deletion. This call should delete the actual object itself */ |
|
RDMA_REMOVE_CLOSE, |
|
/* Driver is being hot-unplugged. This call should delete the actual object itself */ |
|
RDMA_REMOVE_DRIVER_REMOVE, |
|
/* uobj is being cleaned-up before being committed */ |
|
RDMA_REMOVE_ABORT, |
|
/* The driver failed to destroy the uobject and is being disconnected */ |
|
RDMA_REMOVE_DRIVER_FAILURE, |
|
}; |
|
|
|
struct ib_rdmacg_object { |
|
#ifdef CONFIG_CGROUP_RDMA |
|
struct rdma_cgroup *cg; /* owner rdma cgroup */ |
|
#endif |
|
}; |
|
|
|
struct ib_ucontext { |
|
struct ib_device *device; |
|
struct ib_uverbs_file *ufile; |
|
|
|
struct ib_rdmacg_object cg_obj; |
|
/* |
|
* Implementation details of the RDMA core, don't use in drivers: |
|
*/ |
|
struct rdma_restrack_entry res; |
|
struct xarray mmap_xa; |
|
}; |
|
|
|
struct ib_uobject { |
|
u64 user_handle; /* handle given to us by userspace */ |
|
/* ufile & ucontext owning this object */ |
|
struct ib_uverbs_file *ufile; |
|
/* FIXME, save memory: ufile->context == context */ |
|
struct ib_ucontext *context; /* associated user context */ |
|
void *object; /* containing object */ |
|
struct list_head list; /* link to context's list */ |
|
struct ib_rdmacg_object cg_obj; /* rdmacg object */ |
|
int id; /* index into kernel idr */ |
|
struct kref ref; |
|
atomic_t usecnt; /* protects exclusive access */ |
|
struct rcu_head rcu; /* kfree_rcu() overhead */ |
|
|
|
const struct uverbs_api_object *uapi_object; |
|
}; |
|
|
|
struct ib_udata { |
|
const void __user *inbuf; |
|
void __user *outbuf; |
|
size_t inlen; |
|
size_t outlen; |
|
}; |
|
|
|
struct ib_pd { |
|
u32 local_dma_lkey; |
|
u32 flags; |
|
struct ib_device *device; |
|
struct ib_uobject *uobject; |
|
atomic_t usecnt; /* count all resources */ |
|
|
|
u32 unsafe_global_rkey; |
|
|
|
/* |
|
* Implementation details of the RDMA core, don't use in drivers: |
|
*/ |
|
struct ib_mr *__internal_mr; |
|
struct rdma_restrack_entry res; |
|
}; |
|
|
|
struct ib_xrcd { |
|
struct ib_device *device; |
|
atomic_t usecnt; /* count all exposed resources */ |
|
struct inode *inode; |
|
struct rw_semaphore tgt_qps_rwsem; |
|
struct xarray tgt_qps; |
|
}; |
|
|
|
struct ib_ah { |
|
struct ib_device *device; |
|
struct ib_pd *pd; |
|
struct ib_uobject *uobject; |
|
const struct ib_gid_attr *sgid_attr; |
|
enum rdma_ah_attr_type type; |
|
}; |
|
|
|
typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context); |
|
|
|
enum ib_poll_context { |
|
IB_POLL_SOFTIRQ, /* poll from softirq context */ |
|
IB_POLL_WORKQUEUE, /* poll from workqueue */ |
|
IB_POLL_UNBOUND_WORKQUEUE, /* poll from unbound workqueue */ |
|
IB_POLL_LAST_POOL_TYPE = IB_POLL_UNBOUND_WORKQUEUE, |
|
|
|
IB_POLL_DIRECT, /* caller context, no hw completions */ |
|
}; |
|
|
|
struct ib_cq { |
|
struct ib_device *device; |
|
struct ib_ucq_object *uobject; |
|
ib_comp_handler comp_handler; |
|
void (*event_handler)(struct ib_event *, void *); |
|
void *cq_context; |
|
int cqe; |
|
unsigned int cqe_used; |
|
atomic_t usecnt; /* count number of work queues */ |
|
enum ib_poll_context poll_ctx; |
|
struct ib_wc *wc; |
|
struct list_head pool_entry; |
|
union { |
|
struct irq_poll iop; |
|
struct work_struct work; |
|
}; |
|
struct workqueue_struct *comp_wq; |
|
struct dim *dim; |
|
|
|
/* updated only by trace points */ |
|
ktime_t timestamp; |
|
u8 interrupt:1; |
|
u8 shared:1; |
|
unsigned int comp_vector; |
|
|
|
/* |
|
* Implementation details of the RDMA core, don't use in drivers: |
|
*/ |
|
struct rdma_restrack_entry res; |
|
}; |
|
|
|
struct ib_srq { |
|
struct ib_device *device; |
|
struct ib_pd *pd; |
|
struct ib_usrq_object *uobject; |
|
void (*event_handler)(struct ib_event *, void *); |
|
void *srq_context; |
|
enum ib_srq_type srq_type; |
|
atomic_t usecnt; |
|
|
|
struct { |
|
struct ib_cq *cq; |
|
union { |
|
struct { |
|
struct ib_xrcd *xrcd; |
|
u32 srq_num; |
|
} xrc; |
|
}; |
|
} ext; |
|
}; |
|
|
|
enum ib_raw_packet_caps { |
|
/* Strip cvlan from incoming packet and report it in the matching work |
|
* completion is supported. |
|
*/ |
|
IB_RAW_PACKET_CAP_CVLAN_STRIPPING = (1 << 0), |
|
/* Scatter FCS field of an incoming packet to host memory is supported. |
|
*/ |
|
IB_RAW_PACKET_CAP_SCATTER_FCS = (1 << 1), |
|
/* Checksum offloads are supported (for both send and receive). */ |
|
IB_RAW_PACKET_CAP_IP_CSUM = (1 << 2), |
|
/* When a packet is received for an RQ with no receive WQEs, the |
|
* packet processing is delayed. |
|
*/ |
|
IB_RAW_PACKET_CAP_DELAY_DROP = (1 << 3), |
|
}; |
|
|
|
enum ib_wq_type { |
|
IB_WQT_RQ = IB_UVERBS_WQT_RQ, |
|
}; |
|
|
|
enum ib_wq_state { |
|
IB_WQS_RESET, |
|
IB_WQS_RDY, |
|
IB_WQS_ERR |
|
}; |
|
|
|
struct ib_wq { |
|
struct ib_device *device; |
|
struct ib_uwq_object *uobject; |
|
void *wq_context; |
|
void (*event_handler)(struct ib_event *, void *); |
|
struct ib_pd *pd; |
|
struct ib_cq *cq; |
|
u32 wq_num; |
|
enum ib_wq_state state; |
|
enum ib_wq_type wq_type; |
|
atomic_t usecnt; |
|
}; |
|
|
|
enum ib_wq_flags { |
|
IB_WQ_FLAGS_CVLAN_STRIPPING = IB_UVERBS_WQ_FLAGS_CVLAN_STRIPPING, |
|
IB_WQ_FLAGS_SCATTER_FCS = IB_UVERBS_WQ_FLAGS_SCATTER_FCS, |
|
IB_WQ_FLAGS_DELAY_DROP = IB_UVERBS_WQ_FLAGS_DELAY_DROP, |
|
IB_WQ_FLAGS_PCI_WRITE_END_PADDING = |
|
IB_UVERBS_WQ_FLAGS_PCI_WRITE_END_PADDING, |
|
}; |
|
|
|
struct ib_wq_init_attr { |
|
void *wq_context; |
|
enum ib_wq_type wq_type; |
|
u32 max_wr; |
|
u32 max_sge; |
|
struct ib_cq *cq; |
|
void (*event_handler)(struct ib_event *, void *); |
|
u32 create_flags; /* Use enum ib_wq_flags */ |
|
}; |
|
|
|
enum ib_wq_attr_mask { |
|
IB_WQ_STATE = 1 << 0, |
|
IB_WQ_CUR_STATE = 1 << 1, |
|
IB_WQ_FLAGS = 1 << 2, |
|
}; |
|
|
|
struct ib_wq_attr { |
|
enum ib_wq_state wq_state; |
|
enum ib_wq_state curr_wq_state; |
|
u32 flags; /* Use enum ib_wq_flags */ |
|
u32 flags_mask; /* Use enum ib_wq_flags */ |
|
}; |
|
|
|
struct ib_rwq_ind_table { |
|
struct ib_device *device; |
|
struct ib_uobject *uobject; |
|
atomic_t usecnt; |
|
u32 ind_tbl_num; |
|
u32 log_ind_tbl_size; |
|
struct ib_wq **ind_tbl; |
|
}; |
|
|
|
struct ib_rwq_ind_table_init_attr { |
|
u32 log_ind_tbl_size; |
|
/* Each entry is a pointer to Receive Work Queue */ |
|
struct ib_wq **ind_tbl; |
|
}; |
|
|
|
enum port_pkey_state { |
|
IB_PORT_PKEY_NOT_VALID = 0, |
|
IB_PORT_PKEY_VALID = 1, |
|
IB_PORT_PKEY_LISTED = 2, |
|
}; |
|
|
|
struct ib_qp_security; |
|
|
|
struct ib_port_pkey { |
|
enum port_pkey_state state; |
|
u16 pkey_index; |
|
u8 port_num; |
|
struct list_head qp_list; |
|
struct list_head to_error_list; |
|
struct ib_qp_security *sec; |
|
}; |
|
|
|
struct ib_ports_pkeys { |
|
struct ib_port_pkey main; |
|
struct ib_port_pkey alt; |
|
}; |
|
|
|
struct ib_qp_security { |
|
struct ib_qp *qp; |
|
struct ib_device *dev; |
|
/* Hold this mutex when changing port and pkey settings. */ |
|
struct mutex mutex; |
|
struct ib_ports_pkeys *ports_pkeys; |
|
/* A list of all open shared QP handles. Required to enforce security |
|
* properly for all users of a shared QP. |
|
*/ |
|
struct list_head shared_qp_list; |
|
void *security; |
|
bool destroying; |
|
atomic_t error_list_count; |
|
struct completion error_complete; |
|
int error_comps_pending; |
|
}; |
|
|
|
/* |
|
* @max_write_sge: Maximum SGE elements per RDMA WRITE request. |
|
* @max_read_sge: Maximum SGE elements per RDMA READ request. |
|
*/ |
|
struct ib_qp { |
|
struct ib_device *device; |
|
struct ib_pd *pd; |
|
struct ib_cq *send_cq; |
|
struct ib_cq *recv_cq; |
|
spinlock_t mr_lock; |
|
int mrs_used; |
|
struct list_head rdma_mrs; |
|
struct list_head sig_mrs; |
|
struct ib_srq *srq; |
|
struct ib_xrcd *xrcd; /* XRC TGT QPs only */ |
|
struct list_head xrcd_list; |
|
|
|
/* count times opened, mcast attaches, flow attaches */ |
|
atomic_t usecnt; |
|
struct list_head open_list; |
|
struct ib_qp *real_qp; |
|
struct ib_uqp_object *uobject; |
|
void (*event_handler)(struct ib_event *, void *); |
|
void *qp_context; |
|
/* sgid_attrs associated with the AV's */ |
|
const struct ib_gid_attr *av_sgid_attr; |
|
const struct ib_gid_attr *alt_path_sgid_attr; |
|
u32 qp_num; |
|
u32 max_write_sge; |
|
u32 max_read_sge; |
|
enum ib_qp_type qp_type; |
|
struct ib_rwq_ind_table *rwq_ind_tbl; |
|
struct ib_qp_security *qp_sec; |
|
u8 port; |
|
|
|
bool integrity_en; |
|
/* |
|
* Implementation details of the RDMA core, don't use in drivers: |
|
*/ |
|
struct rdma_restrack_entry res; |
|
|
|
/* The counter the qp is bind to */ |
|
struct rdma_counter *counter; |
|
}; |
|
|
|
struct ib_dm { |
|
struct ib_device *device; |
|
u32 length; |
|
u32 flags; |
|
struct ib_uobject *uobject; |
|
atomic_t usecnt; |
|
}; |
|
|
|
struct ib_mr { |
|
struct ib_device *device; |
|
struct ib_pd *pd; |
|
u32 lkey; |
|
u32 rkey; |
|
u64 iova; |
|
u64 length; |
|
unsigned int page_size; |
|
enum ib_mr_type type; |
|
bool need_inval; |
|
union { |
|
struct ib_uobject *uobject; /* user */ |
|
struct list_head qp_entry; /* FR */ |
|
}; |
|
|
|
struct ib_dm *dm; |
|
struct ib_sig_attrs *sig_attrs; /* only for IB_MR_TYPE_INTEGRITY MRs */ |
|
/* |
|
* Implementation details of the RDMA core, don't use in drivers: |
|
*/ |
|
struct rdma_restrack_entry res; |
|
}; |
|
|
|
struct ib_mw { |
|
struct ib_device *device; |
|
struct ib_pd *pd; |
|
struct ib_uobject *uobject; |
|
u32 rkey; |
|
enum ib_mw_type type; |
|
}; |
|
|
|
/* Supported steering options */ |
|
enum ib_flow_attr_type { |
|
/* steering according to rule specifications */ |
|
IB_FLOW_ATTR_NORMAL = 0x0, |
|
/* default unicast and multicast rule - |
|
* receive all Eth traffic which isn't steered to any QP |
|
*/ |
|
IB_FLOW_ATTR_ALL_DEFAULT = 0x1, |
|
/* default multicast rule - |
|
* receive all Eth multicast traffic which isn't steered to any QP |
|
*/ |
|
IB_FLOW_ATTR_MC_DEFAULT = 0x2, |
|
/* sniffer rule - receive all port traffic */ |
|
IB_FLOW_ATTR_SNIFFER = 0x3 |
|
}; |
|
|
|
/* Supported steering header types */ |
|
enum ib_flow_spec_type { |
|
/* L2 headers*/ |
|
IB_FLOW_SPEC_ETH = 0x20, |
|
IB_FLOW_SPEC_IB = 0x22, |
|
/* L3 header*/ |
|
IB_FLOW_SPEC_IPV4 = 0x30, |
|
IB_FLOW_SPEC_IPV6 = 0x31, |
|
IB_FLOW_SPEC_ESP = 0x34, |
|
/* L4 headers*/ |
|
IB_FLOW_SPEC_TCP = 0x40, |
|
IB_FLOW_SPEC_UDP = 0x41, |
|
IB_FLOW_SPEC_VXLAN_TUNNEL = 0x50, |
|
IB_FLOW_SPEC_GRE = 0x51, |
|
IB_FLOW_SPEC_MPLS = 0x60, |
|
IB_FLOW_SPEC_INNER = 0x100, |
|
/* Actions */ |
|
IB_FLOW_SPEC_ACTION_TAG = 0x1000, |
|
IB_FLOW_SPEC_ACTION_DROP = 0x1001, |
|
IB_FLOW_SPEC_ACTION_HANDLE = 0x1002, |
|
IB_FLOW_SPEC_ACTION_COUNT = 0x1003, |
|
}; |
|
#define IB_FLOW_SPEC_LAYER_MASK 0xF0 |
|
#define IB_FLOW_SPEC_SUPPORT_LAYERS 10 |
|
|
|
enum ib_flow_flags { |
|
IB_FLOW_ATTR_FLAGS_DONT_TRAP = 1UL << 1, /* Continue match, no steal */ |
|
IB_FLOW_ATTR_FLAGS_EGRESS = 1UL << 2, /* Egress flow */ |
|
IB_FLOW_ATTR_FLAGS_RESERVED = 1UL << 3 /* Must be last */ |
|
}; |
|
|
|
struct ib_flow_eth_filter { |
|
u8 dst_mac[6]; |
|
u8 src_mac[6]; |
|
__be16 ether_type; |
|
__be16 vlan_tag; |
|
/* Must be last */ |
|
u8 real_sz[]; |
|
}; |
|
|
|
struct ib_flow_spec_eth { |
|
u32 type; |
|
u16 size; |
|
struct ib_flow_eth_filter val; |
|
struct ib_flow_eth_filter mask; |
|
}; |
|
|
|
struct ib_flow_ib_filter { |
|
__be16 dlid; |
|
__u8 sl; |
|
/* Must be last */ |
|
u8 real_sz[]; |
|
}; |
|
|
|
struct ib_flow_spec_ib { |
|
u32 type; |
|
u16 size; |
|
struct ib_flow_ib_filter val; |
|
struct ib_flow_ib_filter mask; |
|
}; |
|
|
|
/* IPv4 header flags */ |
|
enum ib_ipv4_flags { |
|
IB_IPV4_DONT_FRAG = 0x2, /* Don't enable packet fragmentation */ |
|
IB_IPV4_MORE_FRAG = 0X4 /* For All fragmented packets except the |
|
last have this flag set */ |
|
}; |
|
|
|
struct ib_flow_ipv4_filter { |
|
__be32 src_ip; |
|
__be32 dst_ip; |
|
u8 proto; |
|
u8 tos; |
|
u8 ttl; |
|
u8 flags; |
|
/* Must be last */ |
|
u8 real_sz[]; |
|
}; |
|
|
|
struct ib_flow_spec_ipv4 { |
|
u32 type; |
|
u16 size; |
|
struct ib_flow_ipv4_filter val; |
|
struct ib_flow_ipv4_filter mask; |
|
}; |
|
|
|
struct ib_flow_ipv6_filter { |
|
u8 src_ip[16]; |
|
u8 dst_ip[16]; |
|
__be32 flow_label; |
|
u8 next_hdr; |
|
u8 traffic_class; |
|
u8 hop_limit; |
|
/* Must be last */ |
|
u8 real_sz[]; |
|
}; |
|
|
|
struct ib_flow_spec_ipv6 { |
|
u32 type; |
|
u16 size; |
|
struct ib_flow_ipv6_filter val; |
|
struct ib_flow_ipv6_filter mask; |
|
}; |
|
|
|
struct ib_flow_tcp_udp_filter { |
|
__be16 dst_port; |
|
__be16 src_port; |
|
/* Must be last */ |
|
u8 real_sz[]; |
|
}; |
|
|
|
struct ib_flow_spec_tcp_udp { |
|
u32 type; |
|
u16 size; |
|
struct ib_flow_tcp_udp_filter val; |
|
struct ib_flow_tcp_udp_filter mask; |
|
}; |
|
|
|
struct ib_flow_tunnel_filter { |
|
__be32 tunnel_id; |
|
u8 real_sz[]; |
|
}; |
|
|
|
/* ib_flow_spec_tunnel describes the Vxlan tunnel |
|
* the tunnel_id from val has the vni value |
|
*/ |
|
struct ib_flow_spec_tunnel { |
|
u32 type; |
|
u16 size; |
|
struct ib_flow_tunnel_filter val; |
|
struct ib_flow_tunnel_filter mask; |
|
}; |
|
|
|
struct ib_flow_esp_filter { |
|
__be32 spi; |
|
__be32 seq; |
|
/* Must be last */ |
|
u8 real_sz[]; |
|
}; |
|
|
|
struct ib_flow_spec_esp { |
|
u32 type; |
|
u16 size; |
|
struct ib_flow_esp_filter val; |
|
struct ib_flow_esp_filter mask; |
|
}; |
|
|
|
struct ib_flow_gre_filter { |
|
__be16 c_ks_res0_ver; |
|
__be16 protocol; |
|
__be32 key; |
|
/* Must be last */ |
|
u8 real_sz[]; |
|
}; |
|
|
|
struct ib_flow_spec_gre { |
|
u32 type; |
|
u16 size; |
|
struct ib_flow_gre_filter val; |
|
struct ib_flow_gre_filter mask; |
|
}; |
|
|
|
struct ib_flow_mpls_filter { |
|
__be32 tag; |
|
/* Must be last */ |
|
u8 real_sz[]; |
|
}; |
|
|
|
struct ib_flow_spec_mpls { |
|
u32 type; |
|
u16 size; |
|
struct ib_flow_mpls_filter val; |
|
struct ib_flow_mpls_filter mask; |
|
}; |
|
|
|
struct ib_flow_spec_action_tag { |
|
enum ib_flow_spec_type type; |
|
u16 size; |
|
u32 tag_id; |
|
}; |
|
|
|
struct ib_flow_spec_action_drop { |
|
enum ib_flow_spec_type type; |
|
u16 size; |
|
}; |
|
|
|
struct ib_flow_spec_action_handle { |
|
enum ib_flow_spec_type type; |
|
u16 size; |
|
struct ib_flow_action *act; |
|
}; |
|
|
|
enum ib_counters_description { |
|
IB_COUNTER_PACKETS, |
|
IB_COUNTER_BYTES, |
|
}; |
|
|
|
struct ib_flow_spec_action_count { |
|
enum ib_flow_spec_type type; |
|
u16 size; |
|
struct ib_counters *counters; |
|
}; |
|
|
|
union ib_flow_spec { |
|
struct { |
|
u32 type; |
|
u16 size; |
|
}; |
|
struct ib_flow_spec_eth eth; |
|
struct ib_flow_spec_ib ib; |
|
struct ib_flow_spec_ipv4 ipv4; |
|
struct ib_flow_spec_tcp_udp tcp_udp; |
|
struct ib_flow_spec_ipv6 ipv6; |
|
struct ib_flow_spec_tunnel tunnel; |
|
struct ib_flow_spec_esp esp; |
|
struct ib_flow_spec_gre gre; |
|
struct ib_flow_spec_mpls mpls; |
|
struct ib_flow_spec_action_tag flow_tag; |
|
struct ib_flow_spec_action_drop drop; |
|
struct ib_flow_spec_action_handle action; |
|
struct ib_flow_spec_action_count flow_count; |
|
}; |
|
|
|
struct ib_flow_attr { |
|
enum ib_flow_attr_type type; |
|
u16 size; |
|
u16 priority; |
|
u32 flags; |
|
u8 num_of_specs; |
|
u8 port; |
|
union ib_flow_spec flows[]; |
|
}; |
|
|
|
struct ib_flow { |
|
struct ib_qp *qp; |
|
struct ib_device *device; |
|
struct ib_uobject *uobject; |
|
}; |
|
|
|
enum ib_flow_action_type { |
|
IB_FLOW_ACTION_UNSPECIFIED, |
|
IB_FLOW_ACTION_ESP = 1, |
|
}; |
|
|
|
struct ib_flow_action_attrs_esp_keymats { |
|
enum ib_uverbs_flow_action_esp_keymat protocol; |
|
union { |
|
struct ib_uverbs_flow_action_esp_keymat_aes_gcm aes_gcm; |
|
} keymat; |
|
}; |
|
|
|
struct ib_flow_action_attrs_esp_replays { |
|
enum ib_uverbs_flow_action_esp_replay protocol; |
|
union { |
|
struct ib_uverbs_flow_action_esp_replay_bmp bmp; |
|
} replay; |
|
}; |
|
|
|
enum ib_flow_action_attrs_esp_flags { |
|
/* All user-space flags at the top: Use enum ib_uverbs_flow_action_esp_flags |
|
* This is done in order to share the same flags between user-space and |
|
* kernel and spare an unnecessary translation. |
|
*/ |
|
|
|
/* Kernel flags */ |
|
IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED = 1ULL << 32, |
|
IB_FLOW_ACTION_ESP_FLAGS_MOD_ESP_ATTRS = 1ULL << 33, |
|
}; |
|
|
|
struct ib_flow_spec_list { |
|
struct ib_flow_spec_list *next; |
|
union ib_flow_spec spec; |
|
}; |
|
|
|
struct ib_flow_action_attrs_esp { |
|
struct ib_flow_action_attrs_esp_keymats *keymat; |
|
struct ib_flow_action_attrs_esp_replays *replay; |
|
struct ib_flow_spec_list *encap; |
|
/* Used only if IB_FLOW_ACTION_ESP_FLAGS_ESN_TRIGGERED is enabled. |
|
* Value of 0 is a valid value. |
|
*/ |
|
u32 esn; |
|
u32 spi; |
|
u32 seq; |
|
u32 tfc_pad; |
|
/* Use enum ib_flow_action_attrs_esp_flags */ |
|
u64 flags; |
|
u64 hard_limit_pkts; |
|
}; |
|
|
|
struct ib_flow_action { |
|
struct ib_device *device; |
|
struct ib_uobject *uobject; |
|
enum ib_flow_action_type type; |
|
atomic_t usecnt; |
|
}; |
|
|
|
struct ib_mad; |
|
struct ib_grh; |
|
|
|
enum ib_process_mad_flags { |
|
IB_MAD_IGNORE_MKEY = 1, |
|
IB_MAD_IGNORE_BKEY = 2, |
|
IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY |
|
}; |
|
|
|
enum ib_mad_result { |
|
IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */ |
|
IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */ |
|
IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */ |
|
IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */ |
|
}; |
|
|
|
struct ib_port_cache { |
|
u64 subnet_prefix; |
|
struct ib_pkey_cache *pkey; |
|
struct ib_gid_table *gid; |
|
u8 lmc; |
|
enum ib_port_state port_state; |
|
}; |
|
|
|
struct ib_port_immutable { |
|
int pkey_tbl_len; |
|
int gid_tbl_len; |
|
u32 core_cap_flags; |
|
u32 max_mad_size; |
|
}; |
|
|
|
struct ib_port_data { |
|
struct ib_device *ib_dev; |
|
|
|
struct ib_port_immutable immutable; |
|
|
|
spinlock_t pkey_list_lock; |
|
struct list_head pkey_list; |
|
|
|
struct ib_port_cache cache; |
|
|
|
spinlock_t netdev_lock; |
|
struct net_device __rcu *netdev; |
|
struct hlist_node ndev_hash_link; |
|
struct rdma_port_counter port_counter; |
|
struct rdma_hw_stats *hw_stats; |
|
}; |
|
|
|
/* rdma netdev type - specifies protocol type */ |
|
enum rdma_netdev_t { |
|
RDMA_NETDEV_OPA_VNIC, |
|
RDMA_NETDEV_IPOIB, |
|
}; |
|
|
|
/** |
|
* struct rdma_netdev - rdma netdev |
|
* For cases where netstack interfacing is required. |
|
*/ |
|
struct rdma_netdev { |
|
void *clnt_priv; |
|
struct ib_device *hca; |
|
u8 port_num; |
|
int mtu; |
|
|
|
/* |
|
* cleanup function must be specified. |
|
* FIXME: This is only used for OPA_VNIC and that usage should be |
|
* removed too. |
|
*/ |
|
void (*free_rdma_netdev)(struct net_device *netdev); |
|
|
|
/* control functions */ |
|
void (*set_id)(struct net_device *netdev, int id); |
|
/* send packet */ |
|
int (*send)(struct net_device *dev, struct sk_buff *skb, |
|
struct ib_ah *address, u32 dqpn); |
|
/* multicast */ |
|
int (*attach_mcast)(struct net_device *dev, struct ib_device *hca, |
|
union ib_gid *gid, u16 mlid, |
|
int set_qkey, u32 qkey); |
|
int (*detach_mcast)(struct net_device *dev, struct ib_device *hca, |
|
union ib_gid *gid, u16 mlid); |
|
}; |
|
|
|
struct rdma_netdev_alloc_params { |
|
size_t sizeof_priv; |
|
unsigned int txqs; |
|
unsigned int rxqs; |
|
void *param; |
|
|
|
int (*initialize_rdma_netdev)(struct ib_device *device, u8 port_num, |
|
struct net_device *netdev, void *param); |
|
}; |
|
|
|
struct ib_odp_counters { |
|
atomic64_t faults; |
|
atomic64_t invalidations; |
|
atomic64_t prefetch; |
|
}; |
|
|
|
struct ib_counters { |
|
struct ib_device *device; |
|
struct ib_uobject *uobject; |
|
/* num of objects attached */ |
|
atomic_t usecnt; |
|
}; |
|
|
|
struct ib_counters_read_attr { |
|
u64 *counters_buff; |
|
u32 ncounters; |
|
u32 flags; /* use enum ib_read_counters_flags */ |
|
}; |
|
|
|
struct uverbs_attr_bundle; |
|
struct iw_cm_id; |
|
struct iw_cm_conn_param; |
|
|
|
#define INIT_RDMA_OBJ_SIZE(ib_struct, drv_struct, member) \ |
|
.size_##ib_struct = \ |
|
(sizeof(struct drv_struct) + \ |
|
BUILD_BUG_ON_ZERO(offsetof(struct drv_struct, member)) + \ |
|
BUILD_BUG_ON_ZERO( \ |
|
!__same_type(((struct drv_struct *)NULL)->member, \ |
|
struct ib_struct))) |
|
|
|
#define rdma_zalloc_drv_obj_gfp(ib_dev, ib_type, gfp) \ |
|
((struct ib_type *)kzalloc(ib_dev->ops.size_##ib_type, gfp)) |
|
|
|
#define rdma_zalloc_drv_obj(ib_dev, ib_type) \ |
|
rdma_zalloc_drv_obj_gfp(ib_dev, ib_type, GFP_KERNEL) |
|
|
|
#define DECLARE_RDMA_OBJ_SIZE(ib_struct) size_t size_##ib_struct |
|
|
|
struct rdma_user_mmap_entry { |
|
struct kref ref; |
|
struct ib_ucontext *ucontext; |
|
unsigned long start_pgoff; |
|
size_t npages; |
|
bool driver_removed; |
|
}; |
|
|
|
/* Return the offset (in bytes) the user should pass to libc's mmap() */ |
|
static inline u64 |
|
rdma_user_mmap_get_offset(const struct rdma_user_mmap_entry *entry) |
|
{ |
|
return (u64)entry->start_pgoff << PAGE_SHIFT; |
|
} |
|
|
|
/** |
|
* struct ib_device_ops - InfiniBand device operations |
|
* This structure defines all the InfiniBand device operations, providers will |
|
* need to define the supported operations, otherwise they will be set to null. |
|
*/ |
|
struct ib_device_ops { |
|
struct module *owner; |
|
enum rdma_driver_id driver_id; |
|
u32 uverbs_abi_ver; |
|
unsigned int uverbs_no_driver_id_binding:1; |
|
|
|
int (*post_send)(struct ib_qp *qp, const struct ib_send_wr *send_wr, |
|
const struct ib_send_wr **bad_send_wr); |
|
int (*post_recv)(struct ib_qp *qp, const struct ib_recv_wr *recv_wr, |
|
const struct ib_recv_wr **bad_recv_wr); |
|
void (*drain_rq)(struct ib_qp *qp); |
|
void (*drain_sq)(struct ib_qp *qp); |
|
int (*poll_cq)(struct ib_cq *cq, int num_entries, struct ib_wc *wc); |
|
int (*peek_cq)(struct ib_cq *cq, int wc_cnt); |
|
int (*req_notify_cq)(struct ib_cq *cq, enum ib_cq_notify_flags flags); |
|
int (*req_ncomp_notif)(struct ib_cq *cq, int wc_cnt); |
|
int (*post_srq_recv)(struct ib_srq *srq, |
|
const struct ib_recv_wr *recv_wr, |
|
const struct ib_recv_wr **bad_recv_wr); |
|
int (*process_mad)(struct ib_device *device, int process_mad_flags, |
|
u8 port_num, const struct ib_wc *in_wc, |
|
const struct ib_grh *in_grh, |
|
const struct ib_mad *in_mad, struct ib_mad *out_mad, |
|
size_t *out_mad_size, u16 *out_mad_pkey_index); |
|
int (*query_device)(struct ib_device *device, |
|
struct ib_device_attr *device_attr, |
|
struct ib_udata *udata); |
|
int (*modify_device)(struct ib_device *device, int device_modify_mask, |
|
struct ib_device_modify *device_modify); |
|
void (*get_dev_fw_str)(struct ib_device *device, char *str); |
|
const struct cpumask *(*get_vector_affinity)(struct ib_device *ibdev, |
|
int comp_vector); |
|
int (*query_port)(struct ib_device *device, u8 port_num, |
|
struct ib_port_attr *port_attr); |
|
int (*modify_port)(struct ib_device *device, u8 port_num, |
|
int port_modify_mask, |
|
struct ib_port_modify *port_modify); |
|
/** |
|
* The following mandatory functions are used only at device |
|
* registration. Keep functions such as these at the end of this |
|
* structure to avoid cache line misses when accessing struct ib_device |
|
* in fast paths. |
|
*/ |
|
int (*get_port_immutable)(struct ib_device *device, u8 port_num, |
|
struct ib_port_immutable *immutable); |
|
enum rdma_link_layer (*get_link_layer)(struct ib_device *device, |
|
u8 port_num); |
|
/** |
|
* When calling get_netdev, the HW vendor's driver should return the |
|
* net device of device @device at port @port_num or NULL if such |
|
* a net device doesn't exist. The vendor driver should call dev_hold |
|
* on this net device. The HW vendor's device driver must guarantee |
|
* that this function returns NULL before the net device has finished |
|
* NETDEV_UNREGISTER state. |
|
*/ |
|
struct net_device *(*get_netdev)(struct ib_device *device, u8 port_num); |
|
/** |
|
* rdma netdev operation |
|
* |
|
* Driver implementing alloc_rdma_netdev or rdma_netdev_get_params |
|
* must return -EOPNOTSUPP if it doesn't support the specified type. |
|
*/ |
|
struct net_device *(*alloc_rdma_netdev)( |
|
struct ib_device *device, u8 port_num, enum rdma_netdev_t type, |
|
const char *name, unsigned char name_assign_type, |
|
void (*setup)(struct net_device *)); |
|
|
|
int (*rdma_netdev_get_params)(struct ib_device *device, u8 port_num, |
|
enum rdma_netdev_t type, |
|
struct rdma_netdev_alloc_params *params); |
|
/** |
|
* query_gid should be return GID value for @device, when @port_num |
|
* link layer is either IB or iWarp. It is no-op if @port_num port |
|
* is RoCE link layer. |
|
*/ |
|
int (*query_gid)(struct ib_device *device, u8 port_num, int index, |
|
union ib_gid *gid); |
|
/** |
|
* When calling add_gid, the HW vendor's driver should add the gid |
|
* of device of port at gid index available at @attr. Meta-info of |
|
* that gid (for example, the network device related to this gid) is |
|
* available at @attr. @context allows the HW vendor driver to store |
|
* extra information together with a GID entry. The HW vendor driver may |
|
* allocate memory to contain this information and store it in @context |
|
* when a new GID entry is written to. Params are consistent until the |
|
* next call of add_gid or delete_gid. The function should return 0 on |
|
* success or error otherwise. The function could be called |
|
* concurrently for different ports. This function is only called when |
|
* roce_gid_table is used. |
|
*/ |
|
int (*add_gid)(const struct ib_gid_attr *attr, void **context); |
|
/** |
|
* When calling del_gid, the HW vendor's driver should delete the |
|
* gid of device @device at gid index gid_index of port port_num |
|
* available in @attr. |
|
* Upon the deletion of a GID entry, the HW vendor must free any |
|
* allocated memory. The caller will clear @context afterwards. |
|
* This function is only called when roce_gid_table is used. |
|
*/ |
|
int (*del_gid)(const struct ib_gid_attr *attr, void **context); |
|
int (*query_pkey)(struct ib_device *device, u8 port_num, u16 index, |
|
u16 *pkey); |
|
int (*alloc_ucontext)(struct ib_ucontext *context, |
|
struct ib_udata *udata); |
|
void (*dealloc_ucontext)(struct ib_ucontext *context); |
|
int (*mmap)(struct ib_ucontext *context, struct vm_area_struct *vma); |
|
/** |
|
* This will be called once refcount of an entry in mmap_xa reaches |
|
* zero. The type of the memory that was mapped may differ between |
|
* entries and is opaque to the rdma_user_mmap interface. |
|
* Therefore needs to be implemented by the driver in mmap_free. |
|
*/ |
|
void (*mmap_free)(struct rdma_user_mmap_entry *entry); |
|
void (*disassociate_ucontext)(struct ib_ucontext *ibcontext); |
|
int (*alloc_pd)(struct ib_pd *pd, struct ib_udata *udata); |
|
int (*dealloc_pd)(struct ib_pd *pd, struct ib_udata *udata); |
|
int (*create_ah)(struct ib_ah *ah, struct rdma_ah_init_attr *attr, |
|
struct ib_udata *udata); |
|
int (*create_user_ah)(struct ib_ah *ah, struct rdma_ah_init_attr *attr, |
|
struct ib_udata *udata); |
|
int (*modify_ah)(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); |
|
int (*query_ah)(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); |
|
int (*destroy_ah)(struct ib_ah *ah, u32 flags); |
|
int (*create_srq)(struct ib_srq *srq, |
|
struct ib_srq_init_attr *srq_init_attr, |
|
struct ib_udata *udata); |
|
int (*modify_srq)(struct ib_srq *srq, struct ib_srq_attr *srq_attr, |
|
enum ib_srq_attr_mask srq_attr_mask, |
|
struct ib_udata *udata); |
|
int (*query_srq)(struct ib_srq *srq, struct ib_srq_attr *srq_attr); |
|
int (*destroy_srq)(struct ib_srq *srq, struct ib_udata *udata); |
|
struct ib_qp *(*create_qp)(struct ib_pd *pd, |
|
struct ib_qp_init_attr *qp_init_attr, |
|
struct ib_udata *udata); |
|
int (*modify_qp)(struct ib_qp *qp, struct ib_qp_attr *qp_attr, |
|
int qp_attr_mask, struct ib_udata *udata); |
|
int (*query_qp)(struct ib_qp *qp, struct ib_qp_attr *qp_attr, |
|
int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr); |
|
int (*destroy_qp)(struct ib_qp *qp, struct ib_udata *udata); |
|
int (*create_cq)(struct ib_cq *cq, const struct ib_cq_init_attr *attr, |
|
struct ib_udata *udata); |
|
int (*modify_cq)(struct ib_cq *cq, u16 cq_count, u16 cq_period); |
|
int (*destroy_cq)(struct ib_cq *cq, struct ib_udata *udata); |
|
int (*resize_cq)(struct ib_cq *cq, int cqe, struct ib_udata *udata); |
|
struct ib_mr *(*get_dma_mr)(struct ib_pd *pd, int mr_access_flags); |
|
struct ib_mr *(*reg_user_mr)(struct ib_pd *pd, u64 start, u64 length, |
|
u64 virt_addr, int mr_access_flags, |
|
struct ib_udata *udata); |
|
struct ib_mr *(*reg_user_mr_dmabuf)(struct ib_pd *pd, u64 offset, |
|
u64 length, u64 virt_addr, int fd, |
|
int mr_access_flags, |
|
struct ib_udata *udata); |
|
struct ib_mr *(*rereg_user_mr)(struct ib_mr *mr, int flags, u64 start, |
|
u64 length, u64 virt_addr, |
|
int mr_access_flags, struct ib_pd *pd, |
|
struct ib_udata *udata); |
|
int (*dereg_mr)(struct ib_mr *mr, struct ib_udata *udata); |
|
struct ib_mr *(*alloc_mr)(struct ib_pd *pd, enum ib_mr_type mr_type, |
|
u32 max_num_sg); |
|
struct ib_mr *(*alloc_mr_integrity)(struct ib_pd *pd, |
|
u32 max_num_data_sg, |
|
u32 max_num_meta_sg); |
|
int (*advise_mr)(struct ib_pd *pd, |
|
enum ib_uverbs_advise_mr_advice advice, u32 flags, |
|
struct ib_sge *sg_list, u32 num_sge, |
|
struct uverbs_attr_bundle *attrs); |
|
int (*map_mr_sg)(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, |
|
unsigned int *sg_offset); |
|
int (*check_mr_status)(struct ib_mr *mr, u32 check_mask, |
|
struct ib_mr_status *mr_status); |
|
int (*alloc_mw)(struct ib_mw *mw, struct ib_udata *udata); |
|
int (*dealloc_mw)(struct ib_mw *mw); |
|
int (*attach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid); |
|
int (*detach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid); |
|
int (*alloc_xrcd)(struct ib_xrcd *xrcd, struct ib_udata *udata); |
|
int (*dealloc_xrcd)(struct ib_xrcd *xrcd, struct ib_udata *udata); |
|
struct ib_flow *(*create_flow)(struct ib_qp *qp, |
|
struct ib_flow_attr *flow_attr, |
|
struct ib_udata *udata); |
|
int (*destroy_flow)(struct ib_flow *flow_id); |
|
struct ib_flow_action *(*create_flow_action_esp)( |
|
struct ib_device *device, |
|
const struct ib_flow_action_attrs_esp *attr, |
|
struct uverbs_attr_bundle *attrs); |
|
int (*destroy_flow_action)(struct ib_flow_action *action); |
|
int (*modify_flow_action_esp)( |
|
struct ib_flow_action *action, |
|
const struct ib_flow_action_attrs_esp *attr, |
|
struct uverbs_attr_bundle *attrs); |
|
int (*set_vf_link_state)(struct ib_device *device, int vf, u8 port, |
|
int state); |
|
int (*get_vf_config)(struct ib_device *device, int vf, u8 port, |
|
struct ifla_vf_info *ivf); |
|
int (*get_vf_stats)(struct ib_device *device, int vf, u8 port, |
|
struct ifla_vf_stats *stats); |
|
int (*get_vf_guid)(struct ib_device *device, int vf, u8 port, |
|
struct ifla_vf_guid *node_guid, |
|
struct ifla_vf_guid *port_guid); |
|
int (*set_vf_guid)(struct ib_device *device, int vf, u8 port, u64 guid, |
|
int type); |
|
struct ib_wq *(*create_wq)(struct ib_pd *pd, |
|
struct ib_wq_init_attr *init_attr, |
|
struct ib_udata *udata); |
|
int (*destroy_wq)(struct ib_wq *wq, struct ib_udata *udata); |
|
int (*modify_wq)(struct ib_wq *wq, struct ib_wq_attr *attr, |
|
u32 wq_attr_mask, struct ib_udata *udata); |
|
int (*create_rwq_ind_table)(struct ib_rwq_ind_table *ib_rwq_ind_table, |
|
struct ib_rwq_ind_table_init_attr *init_attr, |
|
struct ib_udata *udata); |
|
int (*destroy_rwq_ind_table)(struct ib_rwq_ind_table *wq_ind_table); |
|
struct ib_dm *(*alloc_dm)(struct ib_device *device, |
|
struct ib_ucontext *context, |
|
struct ib_dm_alloc_attr *attr, |
|
struct uverbs_attr_bundle *attrs); |
|
int (*dealloc_dm)(struct ib_dm *dm, struct uverbs_attr_bundle *attrs); |
|
struct ib_mr *(*reg_dm_mr)(struct ib_pd *pd, struct ib_dm *dm, |
|
struct ib_dm_mr_attr *attr, |
|
struct uverbs_attr_bundle *attrs); |
|
int (*create_counters)(struct ib_counters *counters, |
|
struct uverbs_attr_bundle *attrs); |
|
int (*destroy_counters)(struct ib_counters *counters); |
|
int (*read_counters)(struct ib_counters *counters, |
|
struct ib_counters_read_attr *counters_read_attr, |
|
struct uverbs_attr_bundle *attrs); |
|
int (*map_mr_sg_pi)(struct ib_mr *mr, struct scatterlist *data_sg, |
|
int data_sg_nents, unsigned int *data_sg_offset, |
|
struct scatterlist *meta_sg, int meta_sg_nents, |
|
unsigned int *meta_sg_offset); |
|
|
|
/** |
|
* alloc_hw_stats - Allocate a struct rdma_hw_stats and fill in the |
|
* driver initialized data. The struct is kfree()'ed by the sysfs |
|
* core when the device is removed. A lifespan of -1 in the return |
|
* struct tells the core to set a default lifespan. |
|
*/ |
|
struct rdma_hw_stats *(*alloc_hw_stats)(struct ib_device *device, |
|
u8 port_num); |
|
/** |
|
* get_hw_stats - Fill in the counter value(s) in the stats struct. |
|
* @index - The index in the value array we wish to have updated, or |
|
* num_counters if we want all stats updated |
|
* Return codes - |
|
* < 0 - Error, no counters updated |
|
* index - Updated the single counter pointed to by index |
|
* num_counters - Updated all counters (will reset the timestamp |
|
* and prevent further calls for lifespan milliseconds) |
|
* Drivers are allowed to update all counters in leiu of just the |
|
* one given in index at their option |
|
*/ |
|
int (*get_hw_stats)(struct ib_device *device, |
|
struct rdma_hw_stats *stats, u8 port, int index); |
|
/* |
|
* This function is called once for each port when a ib device is |
|
* registered. |
|
*/ |
|
int (*init_port)(struct ib_device *device, u8 port_num, |
|
struct kobject *port_sysfs); |
|
/** |
|
* Allows rdma drivers to add their own restrack attributes. |
|
*/ |
|
int (*fill_res_mr_entry)(struct sk_buff *msg, struct ib_mr *ibmr); |
|
int (*fill_res_mr_entry_raw)(struct sk_buff *msg, struct ib_mr *ibmr); |
|
int (*fill_res_cq_entry)(struct sk_buff *msg, struct ib_cq *ibcq); |
|
int (*fill_res_cq_entry_raw)(struct sk_buff *msg, struct ib_cq *ibcq); |
|
int (*fill_res_qp_entry)(struct sk_buff *msg, struct ib_qp *ibqp); |
|
int (*fill_res_qp_entry_raw)(struct sk_buff *msg, struct ib_qp *ibqp); |
|
int (*fill_res_cm_id_entry)(struct sk_buff *msg, struct rdma_cm_id *id); |
|
|
|
/* Device lifecycle callbacks */ |
|
/* |
|
* Called after the device becomes registered, before clients are |
|
* attached |
|
*/ |
|
int (*enable_driver)(struct ib_device *dev); |
|
/* |
|
* This is called as part of ib_dealloc_device(). |
|
*/ |
|
void (*dealloc_driver)(struct ib_device *dev); |
|
|
|
/* iWarp CM callbacks */ |
|
void (*iw_add_ref)(struct ib_qp *qp); |
|
void (*iw_rem_ref)(struct ib_qp *qp); |
|
struct ib_qp *(*iw_get_qp)(struct ib_device *device, int qpn); |
|
int (*iw_connect)(struct iw_cm_id *cm_id, |
|
struct iw_cm_conn_param *conn_param); |
|
int (*iw_accept)(struct iw_cm_id *cm_id, |
|
struct iw_cm_conn_param *conn_param); |
|
int (*iw_reject)(struct iw_cm_id *cm_id, const void *pdata, |
|
u8 pdata_len); |
|
int (*iw_create_listen)(struct iw_cm_id *cm_id, int backlog); |
|
int (*iw_destroy_listen)(struct iw_cm_id *cm_id); |
|
/** |
|
* counter_bind_qp - Bind a QP to a counter. |
|
* @counter - The counter to be bound. If counter->id is zero then |
|
* the driver needs to allocate a new counter and set counter->id |
|
*/ |
|
int (*counter_bind_qp)(struct rdma_counter *counter, struct ib_qp *qp); |
|
/** |
|
* counter_unbind_qp - Unbind the qp from the dynamically-allocated |
|
* counter and bind it onto the default one |
|
*/ |
|
int (*counter_unbind_qp)(struct ib_qp *qp); |
|
/** |
|
* counter_dealloc -De-allocate the hw counter |
|
*/ |
|
int (*counter_dealloc)(struct rdma_counter *counter); |
|
/** |
|
* counter_alloc_stats - Allocate a struct rdma_hw_stats and fill in |
|
* the driver initialized data. |
|
*/ |
|
struct rdma_hw_stats *(*counter_alloc_stats)( |
|
struct rdma_counter *counter); |
|
/** |
|
* counter_update_stats - Query the stats value of this counter |
|
*/ |
|
int (*counter_update_stats)(struct rdma_counter *counter); |
|
|
|
/** |
|
* Allows rdma drivers to add their own restrack attributes |
|
* dumped via 'rdma stat' iproute2 command. |
|
*/ |
|
int (*fill_stat_mr_entry)(struct sk_buff *msg, struct ib_mr *ibmr); |
|
|
|
/* query driver for its ucontext properties */ |
|
int (*query_ucontext)(struct ib_ucontext *context, |
|
struct uverbs_attr_bundle *attrs); |
|
|
|
DECLARE_RDMA_OBJ_SIZE(ib_ah); |
|
DECLARE_RDMA_OBJ_SIZE(ib_counters); |
|
DECLARE_RDMA_OBJ_SIZE(ib_cq); |
|
DECLARE_RDMA_OBJ_SIZE(ib_mw); |
|
DECLARE_RDMA_OBJ_SIZE(ib_pd); |
|
DECLARE_RDMA_OBJ_SIZE(ib_rwq_ind_table); |
|
DECLARE_RDMA_OBJ_SIZE(ib_srq); |
|
DECLARE_RDMA_OBJ_SIZE(ib_ucontext); |
|
DECLARE_RDMA_OBJ_SIZE(ib_xrcd); |
|
}; |
|
|
|
struct ib_core_device { |
|
/* device must be the first element in structure until, |
|
* union of ib_core_device and device exists in ib_device. |
|
*/ |
|
struct device dev; |
|
possible_net_t rdma_net; |
|
struct kobject *ports_kobj; |
|
struct list_head port_list; |
|
struct ib_device *owner; /* reach back to owner ib_device */ |
|
}; |
|
|
|
struct rdma_restrack_root; |
|
struct ib_device { |
|
/* Do not access @dma_device directly from ULP nor from HW drivers. */ |
|
struct device *dma_device; |
|
struct ib_device_ops ops; |
|
char name[IB_DEVICE_NAME_MAX]; |
|
struct rcu_head rcu_head; |
|
|
|
struct list_head event_handler_list; |
|
/* Protects event_handler_list */ |
|
struct rw_semaphore event_handler_rwsem; |
|
|
|
/* Protects QP's event_handler calls and open_qp list */ |
|
spinlock_t qp_open_list_lock; |
|
|
|
struct rw_semaphore client_data_rwsem; |
|
struct xarray client_data; |
|
struct mutex unregistration_lock; |
|
|
|
/* Synchronize GID, Pkey cache entries, subnet prefix, LMC */ |
|
rwlock_t cache_lock; |
|
/** |
|
* port_data is indexed by port number |
|
*/ |
|
struct ib_port_data *port_data; |
|
|
|
int num_comp_vectors; |
|
|
|
union { |
|
struct device dev; |
|
struct ib_core_device coredev; |
|
}; |
|
|
|
/* First group for device attributes, |
|
* Second group for driver provided attributes (optional). |
|
* It is NULL terminated array. |
|
*/ |
|
const struct attribute_group *groups[3]; |
|
|
|
u64 uverbs_cmd_mask; |
|
|
|
char node_desc[IB_DEVICE_NODE_DESC_MAX]; |
|
__be64 node_guid; |
|
u32 local_dma_lkey; |
|
u16 is_switch:1; |
|
/* Indicates kernel verbs support, should not be used in drivers */ |
|
u16 kverbs_provider:1; |
|
/* CQ adaptive moderation (RDMA DIM) */ |
|
u16 use_cq_dim:1; |
|
u8 node_type; |
|
u8 phys_port_cnt; |
|
struct ib_device_attr attrs; |
|
struct attribute_group *hw_stats_ag; |
|
struct rdma_hw_stats *hw_stats; |
|
|
|
#ifdef CONFIG_CGROUP_RDMA |
|
struct rdmacg_device cg_device; |
|
#endif |
|
|
|
u32 index; |
|
|
|
spinlock_t cq_pools_lock; |
|
struct list_head cq_pools[IB_POLL_LAST_POOL_TYPE + 1]; |
|
|
|
struct rdma_restrack_root *res; |
|
|
|
const struct uapi_definition *driver_def; |
|
|
|
/* |
|
* Positive refcount indicates that the device is currently |
|
* registered and cannot be unregistered. |
|
*/ |
|
refcount_t refcount; |
|
struct completion unreg_completion; |
|
struct work_struct unregistration_work; |
|
|
|
const struct rdma_link_ops *link_ops; |
|
|
|
/* Protects compat_devs xarray modifications */ |
|
struct mutex compat_devs_mutex; |
|
/* Maintains compat devices for each net namespace */ |
|
struct xarray compat_devs; |
|
|
|
/* Used by iWarp CM */ |
|
char iw_ifname[IFNAMSIZ]; |
|
u32 iw_driver_flags; |
|
u32 lag_flags; |
|
}; |
|
|
|
struct ib_client_nl_info; |
|
struct ib_client { |
|
const char *name; |
|
int (*add)(struct ib_device *ibdev); |
|
void (*remove)(struct ib_device *, void *client_data); |
|
void (*rename)(struct ib_device *dev, void *client_data); |
|
int (*get_nl_info)(struct ib_device *ibdev, void *client_data, |
|
struct ib_client_nl_info *res); |
|
int (*get_global_nl_info)(struct ib_client_nl_info *res); |
|
|
|
/* Returns the net_dev belonging to this ib_client and matching the |
|
* given parameters. |
|
* @dev: An RDMA device that the net_dev use for communication. |
|
* @port: A physical port number on the RDMA device. |
|
* @pkey: P_Key that the net_dev uses if applicable. |
|
* @gid: A GID that the net_dev uses to communicate. |
|
* @addr: An IP address the net_dev is configured with. |
|
* @client_data: The device's client data set by ib_set_client_data(). |
|
* |
|
* An ib_client that implements a net_dev on top of RDMA devices |
|
* (such as IP over IB) should implement this callback, allowing the |
|
* rdma_cm module to find the right net_dev for a given request. |
|
* |
|
* The caller is responsible for calling dev_put on the returned |
|
* netdev. */ |
|
struct net_device *(*get_net_dev_by_params)( |
|
struct ib_device *dev, |
|
u8 port, |
|
u16 pkey, |
|
const union ib_gid *gid, |
|
const struct sockaddr *addr, |
|
void *client_data); |
|
|
|
refcount_t uses; |
|
struct completion uses_zero; |
|
u32 client_id; |
|
|
|
/* kverbs are not required by the client */ |
|
u8 no_kverbs_req:1; |
|
}; |
|
|
|
/* |
|
* IB block DMA iterator |
|
* |
|
* Iterates the DMA-mapped SGL in contiguous memory blocks aligned |
|
* to a HW supported page size. |
|
*/ |
|
struct ib_block_iter { |
|
/* internal states */ |
|
struct scatterlist *__sg; /* sg holding the current aligned block */ |
|
dma_addr_t __dma_addr; /* unaligned DMA address of this block */ |
|
unsigned int __sg_nents; /* number of SG entries */ |
|
unsigned int __sg_advance; /* number of bytes to advance in sg in next step */ |
|
unsigned int __pg_bit; /* alignment of current block */ |
|
}; |
|
|
|
struct ib_device *_ib_alloc_device(size_t size); |
|
#define ib_alloc_device(drv_struct, member) \ |
|
container_of(_ib_alloc_device(sizeof(struct drv_struct) + \ |
|
BUILD_BUG_ON_ZERO(offsetof( \ |
|
struct drv_struct, member))), \ |
|
struct drv_struct, member) |
|
|
|
void ib_dealloc_device(struct ib_device *device); |
|
|
|
void ib_get_device_fw_str(struct ib_device *device, char *str); |
|
|
|
int ib_register_device(struct ib_device *device, const char *name, |
|
struct device *dma_device); |
|
void ib_unregister_device(struct ib_device *device); |
|
void ib_unregister_driver(enum rdma_driver_id driver_id); |
|
void ib_unregister_device_and_put(struct ib_device *device); |
|
void ib_unregister_device_queued(struct ib_device *ib_dev); |
|
|
|
int ib_register_client (struct ib_client *client); |
|
void ib_unregister_client(struct ib_client *client); |
|
|
|
void __rdma_block_iter_start(struct ib_block_iter *biter, |
|
struct scatterlist *sglist, |
|
unsigned int nents, |
|
unsigned long pgsz); |
|
bool __rdma_block_iter_next(struct ib_block_iter *biter); |
|
|
|
/** |
|
* rdma_block_iter_dma_address - get the aligned dma address of the current |
|
* block held by the block iterator. |
|
* @biter: block iterator holding the memory block |
|
*/ |
|
static inline dma_addr_t |
|
rdma_block_iter_dma_address(struct ib_block_iter *biter) |
|
{ |
|
return biter->__dma_addr & ~(BIT_ULL(biter->__pg_bit) - 1); |
|
} |
|
|
|
/** |
|
* rdma_for_each_block - iterate over contiguous memory blocks of the sg list |
|
* @sglist: sglist to iterate over |
|
* @biter: block iterator holding the memory block |
|
* @nents: maximum number of sg entries to iterate over |
|
* @pgsz: best HW supported page size to use |
|
* |
|
* Callers may use rdma_block_iter_dma_address() to get each |
|
* blocks aligned DMA address. |
|
*/ |
|
#define rdma_for_each_block(sglist, biter, nents, pgsz) \ |
|
for (__rdma_block_iter_start(biter, sglist, nents, \ |
|
pgsz); \ |
|
__rdma_block_iter_next(biter);) |
|
|
|
/** |
|
* ib_get_client_data - Get IB client context |
|
* @device:Device to get context for |
|
* @client:Client to get context for |
|
* |
|
* ib_get_client_data() returns the client context data set with |
|
* ib_set_client_data(). This can only be called while the client is |
|
* registered to the device, once the ib_client remove() callback returns this |
|
* cannot be called. |
|
*/ |
|
static inline void *ib_get_client_data(struct ib_device *device, |
|
struct ib_client *client) |
|
{ |
|
return xa_load(&device->client_data, client->client_id); |
|
} |
|
void ib_set_client_data(struct ib_device *device, struct ib_client *client, |
|
void *data); |
|
void ib_set_device_ops(struct ib_device *device, |
|
const struct ib_device_ops *ops); |
|
|
|
int rdma_user_mmap_io(struct ib_ucontext *ucontext, struct vm_area_struct *vma, |
|
unsigned long pfn, unsigned long size, pgprot_t prot, |
|
struct rdma_user_mmap_entry *entry); |
|
int rdma_user_mmap_entry_insert(struct ib_ucontext *ucontext, |
|
struct rdma_user_mmap_entry *entry, |
|
size_t length); |
|
int rdma_user_mmap_entry_insert_range(struct ib_ucontext *ucontext, |
|
struct rdma_user_mmap_entry *entry, |
|
size_t length, u32 min_pgoff, |
|
u32 max_pgoff); |
|
|
|
struct rdma_user_mmap_entry * |
|
rdma_user_mmap_entry_get_pgoff(struct ib_ucontext *ucontext, |
|
unsigned long pgoff); |
|
struct rdma_user_mmap_entry * |
|
rdma_user_mmap_entry_get(struct ib_ucontext *ucontext, |
|
struct vm_area_struct *vma); |
|
void rdma_user_mmap_entry_put(struct rdma_user_mmap_entry *entry); |
|
|
|
void rdma_user_mmap_entry_remove(struct rdma_user_mmap_entry *entry); |
|
|
|
static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len) |
|
{ |
|
return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0; |
|
} |
|
|
|
static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len) |
|
{ |
|
return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0; |
|
} |
|
|
|
static inline bool ib_is_buffer_cleared(const void __user *p, |
|
size_t len) |
|
{ |
|
bool ret; |
|
u8 *buf; |
|
|
|
if (len > USHRT_MAX) |
|
return false; |
|
|
|
buf = memdup_user(p, len); |
|
if (IS_ERR(buf)) |
|
return false; |
|
|
|
ret = !memchr_inv(buf, 0, len); |
|
kfree(buf); |
|
return ret; |
|
} |
|
|
|
static inline bool ib_is_udata_cleared(struct ib_udata *udata, |
|
size_t offset, |
|
size_t len) |
|
{ |
|
return ib_is_buffer_cleared(udata->inbuf + offset, len); |
|
} |
|
|
|
/** |
|
* ib_modify_qp_is_ok - Check that the supplied attribute mask |
|
* contains all required attributes and no attributes not allowed for |
|
* the given QP state transition. |
|
* @cur_state: Current QP state |
|
* @next_state: Next QP state |
|
* @type: QP type |
|
* @mask: Mask of supplied QP attributes |
|
* |
|
* This function is a helper function that a low-level driver's |
|
* modify_qp method can use to validate the consumer's input. It |
|
* checks that cur_state and next_state are valid QP states, that a |
|
* transition from cur_state to next_state is allowed by the IB spec, |
|
* and that the attribute mask supplied is allowed for the transition. |
|
*/ |
|
bool ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, |
|
enum ib_qp_type type, enum ib_qp_attr_mask mask); |
|
|
|
void ib_register_event_handler(struct ib_event_handler *event_handler); |
|
void ib_unregister_event_handler(struct ib_event_handler *event_handler); |
|
void ib_dispatch_event(const struct ib_event *event); |
|
|
|
int ib_query_port(struct ib_device *device, |
|
u8 port_num, struct ib_port_attr *port_attr); |
|
|
|
enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, |
|
u8 port_num); |
|
|
|
/** |
|
* rdma_cap_ib_switch - Check if the device is IB switch |
|
* @device: Device to check |
|
* |
|
* Device driver is responsible for setting is_switch bit on |
|
* in ib_device structure at init time. |
|
* |
|
* Return: true if the device is IB switch. |
|
*/ |
|
static inline bool rdma_cap_ib_switch(const struct ib_device *device) |
|
{ |
|
return device->is_switch; |
|
} |
|
|
|
/** |
|
* rdma_start_port - Return the first valid port number for the device |
|
* specified |
|
* |
|
* @device: Device to be checked |
|
* |
|
* Return start port number |
|
*/ |
|
static inline u8 rdma_start_port(const struct ib_device *device) |
|
{ |
|
return rdma_cap_ib_switch(device) ? 0 : 1; |
|
} |
|
|
|
/** |
|
* rdma_for_each_port - Iterate over all valid port numbers of the IB device |
|
* @device - The struct ib_device * to iterate over |
|
* @iter - The unsigned int to store the port number |
|
*/ |
|
#define rdma_for_each_port(device, iter) \ |
|
for (iter = rdma_start_port(device + BUILD_BUG_ON_ZERO(!__same_type( \ |
|
unsigned int, iter))); \ |
|
iter <= rdma_end_port(device); (iter)++) |
|
|
|
/** |
|
* rdma_end_port - Return the last valid port number for the device |
|
* specified |
|
* |
|
* @device: Device to be checked |
|
* |
|
* Return last port number |
|
*/ |
|
static inline u8 rdma_end_port(const struct ib_device *device) |
|
{ |
|
return rdma_cap_ib_switch(device) ? 0 : device->phys_port_cnt; |
|
} |
|
|
|
static inline int rdma_is_port_valid(const struct ib_device *device, |
|
unsigned int port) |
|
{ |
|
return (port >= rdma_start_port(device) && |
|
port <= rdma_end_port(device)); |
|
} |
|
|
|
static inline bool rdma_is_grh_required(const struct ib_device *device, |
|
u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_PORT_IB_GRH_REQUIRED; |
|
} |
|
|
|
static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_PROT_IB; |
|
} |
|
|
|
static inline bool rdma_protocol_roce(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
(RDMA_CORE_CAP_PROT_ROCE | RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP); |
|
} |
|
|
|
static inline bool rdma_protocol_roce_udp_encap(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP; |
|
} |
|
|
|
static inline bool rdma_protocol_roce_eth_encap(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_PROT_ROCE; |
|
} |
|
|
|
static inline bool rdma_protocol_iwarp(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_PROT_IWARP; |
|
} |
|
|
|
static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num) |
|
{ |
|
return rdma_protocol_ib(device, port_num) || |
|
rdma_protocol_roce(device, port_num); |
|
} |
|
|
|
static inline bool rdma_protocol_raw_packet(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_PROT_RAW_PACKET; |
|
} |
|
|
|
static inline bool rdma_protocol_usnic(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_PROT_USNIC; |
|
} |
|
|
|
/** |
|
* rdma_cap_ib_mad - Check if the port of a device supports Infiniband |
|
* Management Datagrams. |
|
* @device: Device to check |
|
* @port_num: Port number to check |
|
* |
|
* Management Datagrams (MAD) are a required part of the InfiniBand |
|
* specification and are supported on all InfiniBand devices. A slightly |
|
* extended version are also supported on OPA interfaces. |
|
* |
|
* Return: true if the port supports sending/receiving of MAD packets. |
|
*/ |
|
static inline bool rdma_cap_ib_mad(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_IB_MAD; |
|
} |
|
|
|
/** |
|
* rdma_cap_opa_mad - Check if the port of device provides support for OPA |
|
* Management Datagrams. |
|
* @device: Device to check |
|
* @port_num: Port number to check |
|
* |
|
* Intel OmniPath devices extend and/or replace the InfiniBand Management |
|
* datagrams with their own versions. These OPA MADs share many but not all of |
|
* the characteristics of InfiniBand MADs. |
|
* |
|
* OPA MADs differ in the following ways: |
|
* |
|
* 1) MADs are variable size up to 2K |
|
* IBTA defined MADs remain fixed at 256 bytes |
|
* 2) OPA SMPs must carry valid PKeys |
|
* 3) OPA SMP packets are a different format |
|
* |
|
* Return: true if the port supports OPA MAD packet formats. |
|
*/ |
|
static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_OPA_MAD; |
|
} |
|
|
|
/** |
|
* rdma_cap_ib_smi - Check if the port of a device provides an Infiniband |
|
* Subnet Management Agent (SMA) on the Subnet Management Interface (SMI). |
|
* @device: Device to check |
|
* @port_num: Port number to check |
|
* |
|
* Each InfiniBand node is required to provide a Subnet Management Agent |
|
* that the subnet manager can access. Prior to the fabric being fully |
|
* configured by the subnet manager, the SMA is accessed via a well known |
|
* interface called the Subnet Management Interface (SMI). This interface |
|
* uses directed route packets to communicate with the SM to get around the |
|
* chicken and egg problem of the SM needing to know what's on the fabric |
|
* in order to configure the fabric, and needing to configure the fabric in |
|
* order to send packets to the devices on the fabric. These directed |
|
* route packets do not need the fabric fully configured in order to reach |
|
* their destination. The SMI is the only method allowed to send |
|
* directed route packets on an InfiniBand fabric. |
|
* |
|
* Return: true if the port provides an SMI. |
|
*/ |
|
static inline bool rdma_cap_ib_smi(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_IB_SMI; |
|
} |
|
|
|
/** |
|
* rdma_cap_ib_cm - Check if the port of device has the capability Infiniband |
|
* Communication Manager. |
|
* @device: Device to check |
|
* @port_num: Port number to check |
|
* |
|
* The InfiniBand Communication Manager is one of many pre-defined General |
|
* Service Agents (GSA) that are accessed via the General Service |
|
* Interface (GSI). It's role is to facilitate establishment of connections |
|
* between nodes as well as other management related tasks for established |
|
* connections. |
|
* |
|
* Return: true if the port supports an IB CM (this does not guarantee that |
|
* a CM is actually running however). |
|
*/ |
|
static inline bool rdma_cap_ib_cm(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_IB_CM; |
|
} |
|
|
|
/** |
|
* rdma_cap_iw_cm - Check if the port of device has the capability IWARP |
|
* Communication Manager. |
|
* @device: Device to check |
|
* @port_num: Port number to check |
|
* |
|
* Similar to above, but specific to iWARP connections which have a different |
|
* managment protocol than InfiniBand. |
|
* |
|
* Return: true if the port supports an iWARP CM (this does not guarantee that |
|
* a CM is actually running however). |
|
*/ |
|
static inline bool rdma_cap_iw_cm(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_IW_CM; |
|
} |
|
|
|
/** |
|
* rdma_cap_ib_sa - Check if the port of device has the capability Infiniband |
|
* Subnet Administration. |
|
* @device: Device to check |
|
* @port_num: Port number to check |
|
* |
|
* An InfiniBand Subnet Administration (SA) service is a pre-defined General |
|
* Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand |
|
* fabrics, devices should resolve routes to other hosts by contacting the |
|
* SA to query the proper route. |
|
* |
|
* Return: true if the port should act as a client to the fabric Subnet |
|
* Administration interface. This does not imply that the SA service is |
|
* running locally. |
|
*/ |
|
static inline bool rdma_cap_ib_sa(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_IB_SA; |
|
} |
|
|
|
/** |
|
* rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband |
|
* Multicast. |
|
* @device: Device to check |
|
* @port_num: Port number to check |
|
* |
|
* InfiniBand multicast registration is more complex than normal IPv4 or |
|
* IPv6 multicast registration. Each Host Channel Adapter must register |
|
* with the Subnet Manager when it wishes to join a multicast group. It |
|
* should do so only once regardless of how many queue pairs it subscribes |
|
* to this group. And it should leave the group only after all queue pairs |
|
* attached to the group have been detached. |
|
* |
|
* Return: true if the port must undertake the additional adminstrative |
|
* overhead of registering/unregistering with the SM and tracking of the |
|
* total number of queue pairs attached to the multicast group. |
|
*/ |
|
static inline bool rdma_cap_ib_mcast(const struct ib_device *device, u8 port_num) |
|
{ |
|
return rdma_cap_ib_sa(device, port_num); |
|
} |
|
|
|
/** |
|
* rdma_cap_af_ib - Check if the port of device has the capability |
|
* Native Infiniband Address. |
|
* @device: Device to check |
|
* @port_num: Port number to check |
|
* |
|
* InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default |
|
* GID. RoCE uses a different mechanism, but still generates a GID via |
|
* a prescribed mechanism and port specific data. |
|
* |
|
* Return: true if the port uses a GID address to identify devices on the |
|
* network. |
|
*/ |
|
static inline bool rdma_cap_af_ib(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_AF_IB; |
|
} |
|
|
|
/** |
|
* rdma_cap_eth_ah - Check if the port of device has the capability |
|
* Ethernet Address Handle. |
|
* @device: Device to check |
|
* @port_num: Port number to check |
|
* |
|
* RoCE is InfiniBand over Ethernet, and it uses a well defined technique |
|
* to fabricate GIDs over Ethernet/IP specific addresses native to the |
|
* port. Normally, packet headers are generated by the sending host |
|
* adapter, but when sending connectionless datagrams, we must manually |
|
* inject the proper headers for the fabric we are communicating over. |
|
* |
|
* Return: true if we are running as a RoCE port and must force the |
|
* addition of a Global Route Header built from our Ethernet Address |
|
* Handle into our header list for connectionless packets. |
|
*/ |
|
static inline bool rdma_cap_eth_ah(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_ETH_AH; |
|
} |
|
|
|
/** |
|
* rdma_cap_opa_ah - Check if the port of device supports |
|
* OPA Address handles |
|
* @device: Device to check |
|
* @port_num: Port number to check |
|
* |
|
* Return: true if we are running on an OPA device which supports |
|
* the extended OPA addressing. |
|
*/ |
|
static inline bool rdma_cap_opa_ah(struct ib_device *device, u8 port_num) |
|
{ |
|
return (device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_CAP_OPA_AH) == RDMA_CORE_CAP_OPA_AH; |
|
} |
|
|
|
/** |
|
* rdma_max_mad_size - Return the max MAD size required by this RDMA Port. |
|
* |
|
* @device: Device |
|
* @port_num: Port number |
|
* |
|
* This MAD size includes the MAD headers and MAD payload. No other headers |
|
* are included. |
|
* |
|
* Return the max MAD size required by the Port. Will return 0 if the port |
|
* does not support MADs |
|
*/ |
|
static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num) |
|
{ |
|
return device->port_data[port_num].immutable.max_mad_size; |
|
} |
|
|
|
/** |
|
* rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table |
|
* @device: Device to check |
|
* @port_num: Port number to check |
|
* |
|
* RoCE GID table mechanism manages the various GIDs for a device. |
|
* |
|
* NOTE: if allocating the port's GID table has failed, this call will still |
|
* return true, but any RoCE GID table API will fail. |
|
* |
|
* Return: true if the port uses RoCE GID table mechanism in order to manage |
|
* its GIDs. |
|
*/ |
|
static inline bool rdma_cap_roce_gid_table(const struct ib_device *device, |
|
u8 port_num) |
|
{ |
|
return rdma_protocol_roce(device, port_num) && |
|
device->ops.add_gid && device->ops.del_gid; |
|
} |
|
|
|
/* |
|
* Check if the device supports READ W/ INVALIDATE. |
|
*/ |
|
static inline bool rdma_cap_read_inv(struct ib_device *dev, u32 port_num) |
|
{ |
|
/* |
|
* iWarp drivers must support READ W/ INVALIDATE. No other protocol |
|
* has support for it yet. |
|
*/ |
|
return rdma_protocol_iwarp(dev, port_num); |
|
} |
|
|
|
/** |
|
* rdma_core_cap_opa_port - Return whether the RDMA Port is OPA or not. |
|
* @device: Device |
|
* @port_num: 1 based Port number |
|
* |
|
* Return true if port is an Intel OPA port , false if not |
|
*/ |
|
static inline bool rdma_core_cap_opa_port(struct ib_device *device, |
|
u32 port_num) |
|
{ |
|
return (device->port_data[port_num].immutable.core_cap_flags & |
|
RDMA_CORE_PORT_INTEL_OPA) == RDMA_CORE_PORT_INTEL_OPA; |
|
} |
|
|
|
/** |
|
* rdma_mtu_enum_to_int - Return the mtu of the port as an integer value. |
|
* @device: Device |
|
* @port_num: Port number |
|
* @mtu: enum value of MTU |
|
* |
|
* Return the MTU size supported by the port as an integer value. Will return |
|
* -1 if enum value of mtu is not supported. |
|
*/ |
|
static inline int rdma_mtu_enum_to_int(struct ib_device *device, u8 port, |
|
int mtu) |
|
{ |
|
if (rdma_core_cap_opa_port(device, port)) |
|
return opa_mtu_enum_to_int((enum opa_mtu)mtu); |
|
else |
|
return ib_mtu_enum_to_int((enum ib_mtu)mtu); |
|
} |
|
|
|
/** |
|
* rdma_mtu_from_attr - Return the mtu of the port from the port attribute. |
|
* @device: Device |
|
* @port_num: Port number |
|
* @attr: port attribute |
|
* |
|
* Return the MTU size supported by the port as an integer value. |
|
*/ |
|
static inline int rdma_mtu_from_attr(struct ib_device *device, u8 port, |
|
struct ib_port_attr *attr) |
|
{ |
|
if (rdma_core_cap_opa_port(device, port)) |
|
return attr->phys_mtu; |
|
else |
|
return ib_mtu_enum_to_int(attr->max_mtu); |
|
} |
|
|
|
int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port, |
|
int state); |
|
int ib_get_vf_config(struct ib_device *device, int vf, u8 port, |
|
struct ifla_vf_info *info); |
|
int ib_get_vf_stats(struct ib_device *device, int vf, u8 port, |
|
struct ifla_vf_stats *stats); |
|
int ib_get_vf_guid(struct ib_device *device, int vf, u8 port, |
|
struct ifla_vf_guid *node_guid, |
|
struct ifla_vf_guid *port_guid); |
|
int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid, |
|
int type); |
|
|
|
int ib_query_pkey(struct ib_device *device, |
|
u8 port_num, u16 index, u16 *pkey); |
|
|
|
int ib_modify_device(struct ib_device *device, |
|
int device_modify_mask, |
|
struct ib_device_modify *device_modify); |
|
|
|
int ib_modify_port(struct ib_device *device, |
|
u8 port_num, int port_modify_mask, |
|
struct ib_port_modify *port_modify); |
|
|
|
int ib_find_gid(struct ib_device *device, union ib_gid *gid, |
|
u8 *port_num, u16 *index); |
|
|
|
int ib_find_pkey(struct ib_device *device, |
|
u8 port_num, u16 pkey, u16 *index); |
|
|
|
enum ib_pd_flags { |
|
/* |
|
* Create a memory registration for all memory in the system and place |
|
* the rkey for it into pd->unsafe_global_rkey. This can be used by |
|
* ULPs to avoid the overhead of dynamic MRs. |
|
* |
|
* This flag is generally considered unsafe and must only be used in |
|
* extremly trusted environments. Every use of it will log a warning |
|
* in the kernel log. |
|
*/ |
|
IB_PD_UNSAFE_GLOBAL_RKEY = 0x01, |
|
}; |
|
|
|
struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags, |
|
const char *caller); |
|
|
|
/** |
|
* ib_alloc_pd - Allocates an unused protection domain. |
|
* @device: The device on which to allocate the protection domain. |
|
* @flags: protection domain flags |
|
* |
|
* A protection domain object provides an association between QPs, shared |
|
* receive queues, address handles, memory regions, and memory windows. |
|
* |
|
* Every PD has a local_dma_lkey which can be used as the lkey value for local |
|
* memory operations. |
|
*/ |
|
#define ib_alloc_pd(device, flags) \ |
|
__ib_alloc_pd((device), (flags), KBUILD_MODNAME) |
|
|
|
int ib_dealloc_pd_user(struct ib_pd *pd, struct ib_udata *udata); |
|
|
|
/** |
|
* ib_dealloc_pd - Deallocate kernel PD |
|
* @pd: The protection domain |
|
* |
|
* NOTE: for user PD use ib_dealloc_pd_user with valid udata! |
|
*/ |
|
static inline void ib_dealloc_pd(struct ib_pd *pd) |
|
{ |
|
int ret = ib_dealloc_pd_user(pd, NULL); |
|
|
|
WARN_ONCE(ret, "Destroy of kernel PD shouldn't fail"); |
|
} |
|
|
|
enum rdma_create_ah_flags { |
|
/* In a sleepable context */ |
|
RDMA_CREATE_AH_SLEEPABLE = BIT(0), |
|
}; |
|
|
|
/** |
|
* rdma_create_ah - Creates an address handle for the given address vector. |
|
* @pd: The protection domain associated with the address handle. |
|
* @ah_attr: The attributes of the address vector. |
|
* @flags: Create address handle flags (see enum rdma_create_ah_flags). |
|
* |
|
* The address handle is used to reference a local or global destination |
|
* in all UD QP post sends. |
|
*/ |
|
struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr, |
|
u32 flags); |
|
|
|
/** |
|
* rdma_create_user_ah - Creates an address handle for the given address vector. |
|
* It resolves destination mac address for ah attribute of RoCE type. |
|
* @pd: The protection domain associated with the address handle. |
|
* @ah_attr: The attributes of the address vector. |
|
* @udata: pointer to user's input output buffer information need by |
|
* provider driver. |
|
* |
|
* It returns 0 on success and returns appropriate error code on error. |
|
* The address handle is used to reference a local or global destination |
|
* in all UD QP post sends. |
|
*/ |
|
struct ib_ah *rdma_create_user_ah(struct ib_pd *pd, |
|
struct rdma_ah_attr *ah_attr, |
|
struct ib_udata *udata); |
|
/** |
|
* ib_get_gids_from_rdma_hdr - Get sgid and dgid from GRH or IPv4 header |
|
* work completion. |
|
* @hdr: the L3 header to parse |
|
* @net_type: type of header to parse |
|
* @sgid: place to store source gid |
|
* @dgid: place to store destination gid |
|
*/ |
|
int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, |
|
enum rdma_network_type net_type, |
|
union ib_gid *sgid, union ib_gid *dgid); |
|
|
|
/** |
|
* ib_get_rdma_header_version - Get the header version |
|
* @hdr: the L3 header to parse |
|
*/ |
|
int ib_get_rdma_header_version(const union rdma_network_hdr *hdr); |
|
|
|
/** |
|
* ib_init_ah_attr_from_wc - Initializes address handle attributes from a |
|
* work completion. |
|
* @device: Device on which the received message arrived. |
|
* @port_num: Port on which the received message arrived. |
|
* @wc: Work completion associated with the received message. |
|
* @grh: References the received global route header. This parameter is |
|
* ignored unless the work completion indicates that the GRH is valid. |
|
* @ah_attr: Returned attributes that can be used when creating an address |
|
* handle for replying to the message. |
|
* When ib_init_ah_attr_from_wc() returns success, |
|
* (a) for IB link layer it optionally contains a reference to SGID attribute |
|
* when GRH is present for IB link layer. |
|
* (b) for RoCE link layer it contains a reference to SGID attribute. |
|
* User must invoke rdma_cleanup_ah_attr_gid_attr() to release reference to SGID |
|
* attributes which are initialized using ib_init_ah_attr_from_wc(). |
|
* |
|
*/ |
|
int ib_init_ah_attr_from_wc(struct ib_device *device, u8 port_num, |
|
const struct ib_wc *wc, const struct ib_grh *grh, |
|
struct rdma_ah_attr *ah_attr); |
|
|
|
/** |
|
* ib_create_ah_from_wc - Creates an address handle associated with the |
|
* sender of the specified work completion. |
|
* @pd: The protection domain associated with the address handle. |
|
* @wc: Work completion information associated with a received message. |
|
* @grh: References the received global route header. This parameter is |
|
* ignored unless the work completion indicates that the GRH is valid. |
|
* @port_num: The outbound port number to associate with the address. |
|
* |
|
* The address handle is used to reference a local or global destination |
|
* in all UD QP post sends. |
|
*/ |
|
struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc, |
|
const struct ib_grh *grh, u8 port_num); |
|
|
|
/** |
|
* rdma_modify_ah - Modifies the address vector associated with an address |
|
* handle. |
|
* @ah: The address handle to modify. |
|
* @ah_attr: The new address vector attributes to associate with the |
|
* address handle. |
|
*/ |
|
int rdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); |
|
|
|
/** |
|
* rdma_query_ah - Queries the address vector associated with an address |
|
* handle. |
|
* @ah: The address handle to query. |
|
* @ah_attr: The address vector attributes associated with the address |
|
* handle. |
|
*/ |
|
int rdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr); |
|
|
|
enum rdma_destroy_ah_flags { |
|
/* In a sleepable context */ |
|
RDMA_DESTROY_AH_SLEEPABLE = BIT(0), |
|
}; |
|
|
|
/** |
|
* rdma_destroy_ah_user - Destroys an address handle. |
|
* @ah: The address handle to destroy. |
|
* @flags: Destroy address handle flags (see enum rdma_destroy_ah_flags). |
|
* @udata: Valid user data or NULL for kernel objects |
|
*/ |
|
int rdma_destroy_ah_user(struct ib_ah *ah, u32 flags, struct ib_udata *udata); |
|
|
|
/** |
|
* rdma_destroy_ah - Destroys an kernel address handle. |
|
* @ah: The address handle to destroy. |
|
* @flags: Destroy address handle flags (see enum rdma_destroy_ah_flags). |
|
* |
|
* NOTE: for user ah use rdma_destroy_ah_user with valid udata! |
|
*/ |
|
static inline void rdma_destroy_ah(struct ib_ah *ah, u32 flags) |
|
{ |
|
int ret = rdma_destroy_ah_user(ah, flags, NULL); |
|
|
|
WARN_ONCE(ret, "Destroy of kernel AH shouldn't fail"); |
|
} |
|
|
|
struct ib_srq *ib_create_srq_user(struct ib_pd *pd, |
|
struct ib_srq_init_attr *srq_init_attr, |
|
struct ib_usrq_object *uobject, |
|
struct ib_udata *udata); |
|
static inline struct ib_srq * |
|
ib_create_srq(struct ib_pd *pd, struct ib_srq_init_attr *srq_init_attr) |
|
{ |
|
if (!pd->device->ops.create_srq) |
|
return ERR_PTR(-EOPNOTSUPP); |
|
|
|
return ib_create_srq_user(pd, srq_init_attr, NULL, NULL); |
|
} |
|
|
|
/** |
|
* ib_modify_srq - Modifies the attributes for the specified SRQ. |
|
* @srq: The SRQ to modify. |
|
* @srq_attr: On input, specifies the SRQ attributes to modify. On output, |
|
* the current values of selected SRQ attributes are returned. |
|
* @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ |
|
* are being modified. |
|
* |
|
* The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or |
|
* IB_SRQ_LIMIT to set the SRQ's limit and request notification when |
|
* the number of receives queued drops below the limit. |
|
*/ |
|
int ib_modify_srq(struct ib_srq *srq, |
|
struct ib_srq_attr *srq_attr, |
|
enum ib_srq_attr_mask srq_attr_mask); |
|
|
|
/** |
|
* ib_query_srq - Returns the attribute list and current values for the |
|
* specified SRQ. |
|
* @srq: The SRQ to query. |
|
* @srq_attr: The attributes of the specified SRQ. |
|
*/ |
|
int ib_query_srq(struct ib_srq *srq, |
|
struct ib_srq_attr *srq_attr); |
|
|
|
/** |
|
* ib_destroy_srq_user - Destroys the specified SRQ. |
|
* @srq: The SRQ to destroy. |
|
* @udata: Valid user data or NULL for kernel objects |
|
*/ |
|
int ib_destroy_srq_user(struct ib_srq *srq, struct ib_udata *udata); |
|
|
|
/** |
|
* ib_destroy_srq - Destroys the specified kernel SRQ. |
|
* @srq: The SRQ to destroy. |
|
* |
|
* NOTE: for user srq use ib_destroy_srq_user with valid udata! |
|
*/ |
|
static inline void ib_destroy_srq(struct ib_srq *srq) |
|
{ |
|
int ret = ib_destroy_srq_user(srq, NULL); |
|
|
|
WARN_ONCE(ret, "Destroy of kernel SRQ shouldn't fail"); |
|
} |
|
|
|
/** |
|
* ib_post_srq_recv - Posts a list of work requests to the specified SRQ. |
|
* @srq: The SRQ to post the work request on. |
|
* @recv_wr: A list of work requests to post on the receive queue. |
|
* @bad_recv_wr: On an immediate failure, this parameter will reference |
|
* the work request that failed to be posted on the QP. |
|
*/ |
|
static inline int ib_post_srq_recv(struct ib_srq *srq, |
|
const struct ib_recv_wr *recv_wr, |
|
const struct ib_recv_wr **bad_recv_wr) |
|
{ |
|
const struct ib_recv_wr *dummy; |
|
|
|
return srq->device->ops.post_srq_recv(srq, recv_wr, |
|
bad_recv_wr ? : &dummy); |
|
} |
|
|
|
struct ib_qp *ib_create_named_qp(struct ib_pd *pd, |
|
struct ib_qp_init_attr *qp_init_attr, |
|
const char *caller); |
|
static inline struct ib_qp *ib_create_qp(struct ib_pd *pd, |
|
struct ib_qp_init_attr *init_attr) |
|
{ |
|
return ib_create_named_qp(pd, init_attr, KBUILD_MODNAME); |
|
} |
|
|
|
/** |
|
* ib_modify_qp_with_udata - Modifies the attributes for the specified QP. |
|
* @qp: The QP to modify. |
|
* @attr: On input, specifies the QP attributes to modify. On output, |
|
* the current values of selected QP attributes are returned. |
|
* @attr_mask: A bit-mask used to specify which attributes of the QP |
|
* are being modified. |
|
* @udata: pointer to user's input output buffer information |
|
* are being modified. |
|
* It returns 0 on success and returns appropriate error code on error. |
|
*/ |
|
int ib_modify_qp_with_udata(struct ib_qp *qp, |
|
struct ib_qp_attr *attr, |
|
int attr_mask, |
|
struct ib_udata *udata); |
|
|
|
/** |
|
* ib_modify_qp - Modifies the attributes for the specified QP and then |
|
* transitions the QP to the given state. |
|
* @qp: The QP to modify. |
|
* @qp_attr: On input, specifies the QP attributes to modify. On output, |
|
* the current values of selected QP attributes are returned. |
|
* @qp_attr_mask: A bit-mask used to specify which attributes of the QP |
|
* are being modified. |
|
*/ |
|
int ib_modify_qp(struct ib_qp *qp, |
|
struct ib_qp_attr *qp_attr, |
|
int qp_attr_mask); |
|
|
|
/** |
|
* ib_query_qp - Returns the attribute list and current values for the |
|
* specified QP. |
|
* @qp: The QP to query. |
|
* @qp_attr: The attributes of the specified QP. |
|
* @qp_attr_mask: A bit-mask used to select specific attributes to query. |
|
* @qp_init_attr: Additional attributes of the selected QP. |
|
* |
|
* The qp_attr_mask may be used to limit the query to gathering only the |
|
* selected attributes. |
|
*/ |
|
int ib_query_qp(struct ib_qp *qp, |
|
struct ib_qp_attr *qp_attr, |
|
int qp_attr_mask, |
|
struct ib_qp_init_attr *qp_init_attr); |
|
|
|
/** |
|
* ib_destroy_qp - Destroys the specified QP. |
|
* @qp: The QP to destroy. |
|
* @udata: Valid udata or NULL for kernel objects |
|
*/ |
|
int ib_destroy_qp_user(struct ib_qp *qp, struct ib_udata *udata); |
|
|
|
/** |
|
* ib_destroy_qp - Destroys the specified kernel QP. |
|
* @qp: The QP to destroy. |
|
* |
|
* NOTE: for user qp use ib_destroy_qp_user with valid udata! |
|
*/ |
|
static inline int ib_destroy_qp(struct ib_qp *qp) |
|
{ |
|
return ib_destroy_qp_user(qp, NULL); |
|
} |
|
|
|
/** |
|
* ib_open_qp - Obtain a reference to an existing sharable QP. |
|
* @xrcd - XRC domain |
|
* @qp_open_attr: Attributes identifying the QP to open. |
|
* |
|
* Returns a reference to a sharable QP. |
|
*/ |
|
struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, |
|
struct ib_qp_open_attr *qp_open_attr); |
|
|
|
/** |
|
* ib_close_qp - Release an external reference to a QP. |
|
* @qp: The QP handle to release |
|
* |
|
* The opened QP handle is released by the caller. The underlying |
|
* shared QP is not destroyed until all internal references are released. |
|
*/ |
|
int ib_close_qp(struct ib_qp *qp); |
|
|
|
/** |
|
* ib_post_send - Posts a list of work requests to the send queue of |
|
* the specified QP. |
|
* @qp: The QP to post the work request on. |
|
* @send_wr: A list of work requests to post on the send queue. |
|
* @bad_send_wr: On an immediate failure, this parameter will reference |
|
* the work request that failed to be posted on the QP. |
|
* |
|
* While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate |
|
* error is returned, the QP state shall not be affected, |
|
* ib_post_send() will return an immediate error after queueing any |
|
* earlier work requests in the list. |
|
*/ |
|
static inline int ib_post_send(struct ib_qp *qp, |
|
const struct ib_send_wr *send_wr, |
|
const struct ib_send_wr **bad_send_wr) |
|
{ |
|
const struct ib_send_wr *dummy; |
|
|
|
return qp->device->ops.post_send(qp, send_wr, bad_send_wr ? : &dummy); |
|
} |
|
|
|
/** |
|
* ib_post_recv - Posts a list of work requests to the receive queue of |
|
* the specified QP. |
|
* @qp: The QP to post the work request on. |
|
* @recv_wr: A list of work requests to post on the receive queue. |
|
* @bad_recv_wr: On an immediate failure, this parameter will reference |
|
* the work request that failed to be posted on the QP. |
|
*/ |
|
static inline int ib_post_recv(struct ib_qp *qp, |
|
const struct ib_recv_wr *recv_wr, |
|
const struct ib_recv_wr **bad_recv_wr) |
|
{ |
|
const struct ib_recv_wr *dummy; |
|
|
|
return qp->device->ops.post_recv(qp, recv_wr, bad_recv_wr ? : &dummy); |
|
} |
|
|
|
struct ib_cq *__ib_alloc_cq(struct ib_device *dev, void *private, int nr_cqe, |
|
int comp_vector, enum ib_poll_context poll_ctx, |
|
const char *caller); |
|
static inline struct ib_cq *ib_alloc_cq(struct ib_device *dev, void *private, |
|
int nr_cqe, int comp_vector, |
|
enum ib_poll_context poll_ctx) |
|
{ |
|
return __ib_alloc_cq(dev, private, nr_cqe, comp_vector, poll_ctx, |
|
KBUILD_MODNAME); |
|
} |
|
|
|
struct ib_cq *__ib_alloc_cq_any(struct ib_device *dev, void *private, |
|
int nr_cqe, enum ib_poll_context poll_ctx, |
|
const char *caller); |
|
|
|
/** |
|
* ib_alloc_cq_any: Allocate kernel CQ |
|
* @dev: The IB device |
|
* @private: Private data attached to the CQE |
|
* @nr_cqe: Number of CQEs in the CQ |
|
* @poll_ctx: Context used for polling the CQ |
|
*/ |
|
static inline struct ib_cq *ib_alloc_cq_any(struct ib_device *dev, |
|
void *private, int nr_cqe, |
|
enum ib_poll_context poll_ctx) |
|
{ |
|
return __ib_alloc_cq_any(dev, private, nr_cqe, poll_ctx, |
|
KBUILD_MODNAME); |
|
} |
|
|
|
void ib_free_cq(struct ib_cq *cq); |
|
int ib_process_cq_direct(struct ib_cq *cq, int budget); |
|
|
|
/** |
|
* ib_create_cq - Creates a CQ on the specified device. |
|
* @device: The device on which to create the CQ. |
|
* @comp_handler: A user-specified callback that is invoked when a |
|
* completion event occurs on the CQ. |
|
* @event_handler: A user-specified callback that is invoked when an |
|
* asynchronous event not associated with a completion occurs on the CQ. |
|
* @cq_context: Context associated with the CQ returned to the user via |
|
* the associated completion and event handlers. |
|
* @cq_attr: The attributes the CQ should be created upon. |
|
* |
|
* Users can examine the cq structure to determine the actual CQ size. |
|
*/ |
|
struct ib_cq *__ib_create_cq(struct ib_device *device, |
|
ib_comp_handler comp_handler, |
|
void (*event_handler)(struct ib_event *, void *), |
|
void *cq_context, |
|
const struct ib_cq_init_attr *cq_attr, |
|
const char *caller); |
|
#define ib_create_cq(device, cmp_hndlr, evt_hndlr, cq_ctxt, cq_attr) \ |
|
__ib_create_cq((device), (cmp_hndlr), (evt_hndlr), (cq_ctxt), (cq_attr), KBUILD_MODNAME) |
|
|
|
/** |
|
* ib_resize_cq - Modifies the capacity of the CQ. |
|
* @cq: The CQ to resize. |
|
* @cqe: The minimum size of the CQ. |
|
* |
|
* Users can examine the cq structure to determine the actual CQ size. |
|
*/ |
|
int ib_resize_cq(struct ib_cq *cq, int cqe); |
|
|
|
/** |
|
* rdma_set_cq_moderation - Modifies moderation params of the CQ |
|
* @cq: The CQ to modify. |
|
* @cq_count: number of CQEs that will trigger an event |
|
* @cq_period: max period of time in usec before triggering an event |
|
* |
|
*/ |
|
int rdma_set_cq_moderation(struct ib_cq *cq, u16 cq_count, u16 cq_period); |
|
|
|
/** |
|
* ib_destroy_cq_user - Destroys the specified CQ. |
|
* @cq: The CQ to destroy. |
|
* @udata: Valid user data or NULL for kernel objects |
|
*/ |
|
int ib_destroy_cq_user(struct ib_cq *cq, struct ib_udata *udata); |
|
|
|
/** |
|
* ib_destroy_cq - Destroys the specified kernel CQ. |
|
* @cq: The CQ to destroy. |
|
* |
|
* NOTE: for user cq use ib_destroy_cq_user with valid udata! |
|
*/ |
|
static inline void ib_destroy_cq(struct ib_cq *cq) |
|
{ |
|
int ret = ib_destroy_cq_user(cq, NULL); |
|
|
|
WARN_ONCE(ret, "Destroy of kernel CQ shouldn't fail"); |
|
} |
|
|
|
/** |
|
* ib_poll_cq - poll a CQ for completion(s) |
|
* @cq:the CQ being polled |
|
* @num_entries:maximum number of completions to return |
|
* @wc:array of at least @num_entries &struct ib_wc where completions |
|
* will be returned |
|
* |
|
* Poll a CQ for (possibly multiple) completions. If the return value |
|
* is < 0, an error occurred. If the return value is >= 0, it is the |
|
* number of completions returned. If the return value is |
|
* non-negative and < num_entries, then the CQ was emptied. |
|
*/ |
|
static inline int ib_poll_cq(struct ib_cq *cq, int num_entries, |
|
struct ib_wc *wc) |
|
{ |
|
return cq->device->ops.poll_cq(cq, num_entries, wc); |
|
} |
|
|
|
/** |
|
* ib_req_notify_cq - Request completion notification on a CQ. |
|
* @cq: The CQ to generate an event for. |
|
* @flags: |
|
* Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP |
|
* to request an event on the next solicited event or next work |
|
* completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS |
|
* may also be |ed in to request a hint about missed events, as |
|
* described below. |
|
* |
|
* Return Value: |
|
* < 0 means an error occurred while requesting notification |
|
* == 0 means notification was requested successfully, and if |
|
* IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events |
|
* were missed and it is safe to wait for another event. In |
|
* this case is it guaranteed that any work completions added |
|
* to the CQ since the last CQ poll will trigger a completion |
|
* notification event. |
|
* > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed |
|
* in. It means that the consumer must poll the CQ again to |
|
* make sure it is empty to avoid missing an event because of a |
|
* race between requesting notification and an entry being |
|
* added to the CQ. This return value means it is possible |
|
* (but not guaranteed) that a work completion has been added |
|
* to the CQ since the last poll without triggering a |
|
* completion notification event. |
|
*/ |
|
static inline int ib_req_notify_cq(struct ib_cq *cq, |
|
enum ib_cq_notify_flags flags) |
|
{ |
|
return cq->device->ops.req_notify_cq(cq, flags); |
|
} |
|
|
|
struct ib_cq *ib_cq_pool_get(struct ib_device *dev, unsigned int nr_cqe, |
|
int comp_vector_hint, |
|
enum ib_poll_context poll_ctx); |
|
|
|
void ib_cq_pool_put(struct ib_cq *cq, unsigned int nr_cqe); |
|
|
|
/** |
|
* ib_req_ncomp_notif - Request completion notification when there are |
|
* at least the specified number of unreaped completions on the CQ. |
|
* @cq: The CQ to generate an event for. |
|
* @wc_cnt: The number of unreaped completions that should be on the |
|
* CQ before an event is generated. |
|
*/ |
|
static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt) |
|
{ |
|
return cq->device->ops.req_ncomp_notif ? |
|
cq->device->ops.req_ncomp_notif(cq, wc_cnt) : |
|
-ENOSYS; |
|
} |
|
|
|
/* |
|
* Drivers that don't need a DMA mapping at the RDMA layer, set dma_device to |
|
* NULL. This causes the ib_dma* helpers to just stash the kernel virtual |
|
* address into the dma address. |
|
*/ |
|
static inline bool ib_uses_virt_dma(struct ib_device *dev) |
|
{ |
|
return IS_ENABLED(CONFIG_INFINIBAND_VIRT_DMA) && !dev->dma_device; |
|
} |
|
|
|
/** |
|
* ib_dma_mapping_error - check a DMA addr for error |
|
* @dev: The device for which the dma_addr was created |
|
* @dma_addr: The DMA address to check |
|
*/ |
|
static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr) |
|
{ |
|
if (ib_uses_virt_dma(dev)) |
|
return 0; |
|
return dma_mapping_error(dev->dma_device, dma_addr); |
|
} |
|
|
|
/** |
|
* ib_dma_map_single - Map a kernel virtual address to DMA address |
|
* @dev: The device for which the dma_addr is to be created |
|
* @cpu_addr: The kernel virtual address |
|
* @size: The size of the region in bytes |
|
* @direction: The direction of the DMA |
|
*/ |
|
static inline u64 ib_dma_map_single(struct ib_device *dev, |
|
void *cpu_addr, size_t size, |
|
enum dma_data_direction direction) |
|
{ |
|
if (ib_uses_virt_dma(dev)) |
|
return (uintptr_t)cpu_addr; |
|
return dma_map_single(dev->dma_device, cpu_addr, size, direction); |
|
} |
|
|
|
/** |
|
* ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single() |
|
* @dev: The device for which the DMA address was created |
|
* @addr: The DMA address |
|
* @size: The size of the region in bytes |
|
* @direction: The direction of the DMA |
|
*/ |
|
static inline void ib_dma_unmap_single(struct ib_device *dev, |
|
u64 addr, size_t size, |
|
enum dma_data_direction direction) |
|
{ |
|
if (!ib_uses_virt_dma(dev)) |
|
dma_unmap_single(dev->dma_device, addr, size, direction); |
|
} |
|
|
|
/** |
|
* ib_dma_map_page - Map a physical page to DMA address |
|
* @dev: The device for which the dma_addr is to be created |
|
* @page: The page to be mapped |
|
* @offset: The offset within the page |
|
* @size: The size of the region in bytes |
|
* @direction: The direction of the DMA |
|
*/ |
|
static inline u64 ib_dma_map_page(struct ib_device *dev, |
|
struct page *page, |
|
unsigned long offset, |
|
size_t size, |
|
enum dma_data_direction direction) |
|
{ |
|
if (ib_uses_virt_dma(dev)) |
|
return (uintptr_t)(page_address(page) + offset); |
|
return dma_map_page(dev->dma_device, page, offset, size, direction); |
|
} |
|
|
|
/** |
|
* ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page() |
|
* @dev: The device for which the DMA address was created |
|
* @addr: The DMA address |
|
* @size: The size of the region in bytes |
|
* @direction: The direction of the DMA |
|
*/ |
|
static inline void ib_dma_unmap_page(struct ib_device *dev, |
|
u64 addr, size_t size, |
|
enum dma_data_direction direction) |
|
{ |
|
if (!ib_uses_virt_dma(dev)) |
|
dma_unmap_page(dev->dma_device, addr, size, direction); |
|
} |
|
|
|
int ib_dma_virt_map_sg(struct ib_device *dev, struct scatterlist *sg, int nents); |
|
static inline int ib_dma_map_sg_attrs(struct ib_device *dev, |
|
struct scatterlist *sg, int nents, |
|
enum dma_data_direction direction, |
|
unsigned long dma_attrs) |
|
{ |
|
if (ib_uses_virt_dma(dev)) |
|
return ib_dma_virt_map_sg(dev, sg, nents); |
|
return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, |
|
dma_attrs); |
|
} |
|
|
|
static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev, |
|
struct scatterlist *sg, int nents, |
|
enum dma_data_direction direction, |
|
unsigned long dma_attrs) |
|
{ |
|
if (!ib_uses_virt_dma(dev)) |
|
dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, |
|
dma_attrs); |
|
} |
|
|
|
/** |
|
* ib_dma_map_sg - Map a scatter/gather list to DMA addresses |
|
* @dev: The device for which the DMA addresses are to be created |
|
* @sg: The array of scatter/gather entries |
|
* @nents: The number of scatter/gather entries |
|
* @direction: The direction of the DMA |
|
*/ |
|
static inline int ib_dma_map_sg(struct ib_device *dev, |
|
struct scatterlist *sg, int nents, |
|
enum dma_data_direction direction) |
|
{ |
|
return ib_dma_map_sg_attrs(dev, sg, nents, direction, 0); |
|
} |
|
|
|
/** |
|
* ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses |
|
* @dev: The device for which the DMA addresses were created |
|
* @sg: The array of scatter/gather entries |
|
* @nents: The number of scatter/gather entries |
|
* @direction: The direction of the DMA |
|
*/ |
|
static inline void ib_dma_unmap_sg(struct ib_device *dev, |
|
struct scatterlist *sg, int nents, |
|
enum dma_data_direction direction) |
|
{ |
|
ib_dma_unmap_sg_attrs(dev, sg, nents, direction, 0); |
|
} |
|
|
|
/** |
|
* ib_dma_max_seg_size - Return the size limit of a single DMA transfer |
|
* @dev: The device to query |
|
* |
|
* The returned value represents a size in bytes. |
|
*/ |
|
static inline unsigned int ib_dma_max_seg_size(struct ib_device *dev) |
|
{ |
|
if (ib_uses_virt_dma(dev)) |
|
return UINT_MAX; |
|
return dma_get_max_seg_size(dev->dma_device); |
|
} |
|
|
|
/** |
|
* ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU |
|
* @dev: The device for which the DMA address was created |
|
* @addr: The DMA address |
|
* @size: The size of the region in bytes |
|
* @dir: The direction of the DMA |
|
*/ |
|
static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev, |
|
u64 addr, |
|
size_t size, |
|
enum dma_data_direction dir) |
|
{ |
|
if (!ib_uses_virt_dma(dev)) |
|
dma_sync_single_for_cpu(dev->dma_device, addr, size, dir); |
|
} |
|
|
|
/** |
|
* ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device |
|
* @dev: The device for which the DMA address was created |
|
* @addr: The DMA address |
|
* @size: The size of the region in bytes |
|
* @dir: The direction of the DMA |
|
*/ |
|
static inline void ib_dma_sync_single_for_device(struct ib_device *dev, |
|
u64 addr, |
|
size_t size, |
|
enum dma_data_direction dir) |
|
{ |
|
if (!ib_uses_virt_dma(dev)) |
|
dma_sync_single_for_device(dev->dma_device, addr, size, dir); |
|
} |
|
|
|
/* ib_reg_user_mr - register a memory region for virtual addresses from kernel |
|
* space. This function should be called when 'current' is the owning MM. |
|
*/ |
|
struct ib_mr *ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, |
|
u64 virt_addr, int mr_access_flags); |
|
|
|
/* ib_advise_mr - give an advice about an address range in a memory region */ |
|
int ib_advise_mr(struct ib_pd *pd, enum ib_uverbs_advise_mr_advice advice, |
|
u32 flags, struct ib_sge *sg_list, u32 num_sge); |
|
/** |
|
* ib_dereg_mr_user - Deregisters a memory region and removes it from the |
|
* HCA translation table. |
|
* @mr: The memory region to deregister. |
|
* @udata: Valid user data or NULL for kernel object |
|
* |
|
* This function can fail, if the memory region has memory windows bound to it. |
|
*/ |
|
int ib_dereg_mr_user(struct ib_mr *mr, struct ib_udata *udata); |
|
|
|
/** |
|
* ib_dereg_mr - Deregisters a kernel memory region and removes it from the |
|
* HCA translation table. |
|
* @mr: The memory region to deregister. |
|
* |
|
* This function can fail, if the memory region has memory windows bound to it. |
|
* |
|
* NOTE: for user mr use ib_dereg_mr_user with valid udata! |
|
*/ |
|
static inline int ib_dereg_mr(struct ib_mr *mr) |
|
{ |
|
return ib_dereg_mr_user(mr, NULL); |
|
} |
|
|
|
struct ib_mr *ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type, |
|
u32 max_num_sg); |
|
|
|
struct ib_mr *ib_alloc_mr_integrity(struct ib_pd *pd, |
|
u32 max_num_data_sg, |
|
u32 max_num_meta_sg); |
|
|
|
/** |
|
* ib_update_fast_reg_key - updates the key portion of the fast_reg MR |
|
* R_Key and L_Key. |
|
* @mr - struct ib_mr pointer to be updated. |
|
* @newkey - new key to be used. |
|
*/ |
|
static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey) |
|
{ |
|
mr->lkey = (mr->lkey & 0xffffff00) | newkey; |
|
mr->rkey = (mr->rkey & 0xffffff00) | newkey; |
|
} |
|
|
|
/** |
|
* ib_inc_rkey - increments the key portion of the given rkey. Can be used |
|
* for calculating a new rkey for type 2 memory windows. |
|
* @rkey - the rkey to increment. |
|
*/ |
|
static inline u32 ib_inc_rkey(u32 rkey) |
|
{ |
|
const u32 mask = 0x000000ff; |
|
return ((rkey + 1) & mask) | (rkey & ~mask); |
|
} |
|
|
|
/** |
|
* ib_attach_mcast - Attaches the specified QP to a multicast group. |
|
* @qp: QP to attach to the multicast group. The QP must be type |
|
* IB_QPT_UD. |
|
* @gid: Multicast group GID. |
|
* @lid: Multicast group LID in host byte order. |
|
* |
|
* In order to send and receive multicast packets, subnet |
|
* administration must have created the multicast group and configured |
|
* the fabric appropriately. The port associated with the specified |
|
* QP must also be a member of the multicast group. |
|
*/ |
|
int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid); |
|
|
|
/** |
|
* ib_detach_mcast - Detaches the specified QP from a multicast group. |
|
* @qp: QP to detach from the multicast group. |
|
* @gid: Multicast group GID. |
|
* @lid: Multicast group LID in host byte order. |
|
*/ |
|
int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid); |
|
|
|
struct ib_xrcd *ib_alloc_xrcd_user(struct ib_device *device, |
|
struct inode *inode, struct ib_udata *udata); |
|
int ib_dealloc_xrcd_user(struct ib_xrcd *xrcd, struct ib_udata *udata); |
|
|
|
static inline int ib_check_mr_access(struct ib_device *ib_dev, |
|
unsigned int flags) |
|
{ |
|
/* |
|
* Local write permission is required if remote write or |
|
* remote atomic permission is also requested. |
|
*/ |
|
if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && |
|
!(flags & IB_ACCESS_LOCAL_WRITE)) |
|
return -EINVAL; |
|
|
|
if (flags & ~IB_ACCESS_SUPPORTED) |
|
return -EINVAL; |
|
|
|
if (flags & IB_ACCESS_ON_DEMAND && |
|
!(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING)) |
|
return -EINVAL; |
|
return 0; |
|
} |
|
|
|
static inline bool ib_access_writable(int access_flags) |
|
{ |
|
/* |
|
* We have writable memory backing the MR if any of the following |
|
* access flags are set. "Local write" and "remote write" obviously |
|
* require write access. "Remote atomic" can do things like fetch and |
|
* add, which will modify memory, and "MW bind" can change permissions |
|
* by binding a window. |
|
*/ |
|
return access_flags & |
|
(IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE | |
|
IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_MW_BIND); |
|
} |
|
|
|
/** |
|
* ib_check_mr_status: lightweight check of MR status. |
|
* This routine may provide status checks on a selected |
|
* ib_mr. first use is for signature status check. |
|
* |
|
* @mr: A memory region. |
|
* @check_mask: Bitmask of which checks to perform from |
|
* ib_mr_status_check enumeration. |
|
* @mr_status: The container of relevant status checks. |
|
* failed checks will be indicated in the status bitmask |
|
* and the relevant info shall be in the error item. |
|
*/ |
|
int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, |
|
struct ib_mr_status *mr_status); |
|
|
|
/** |
|
* ib_device_try_get: Hold a registration lock |
|
* device: The device to lock |
|
* |
|
* A device under an active registration lock cannot become unregistered. It |
|
* is only possible to obtain a registration lock on a device that is fully |
|
* registered, otherwise this function returns false. |
|
* |
|
* The registration lock is only necessary for actions which require the |
|
* device to still be registered. Uses that only require the device pointer to |
|
* be valid should use get_device(&ibdev->dev) to hold the memory. |
|
* |
|
*/ |
|
static inline bool ib_device_try_get(struct ib_device *dev) |
|
{ |
|
return refcount_inc_not_zero(&dev->refcount); |
|
} |
|
|
|
void ib_device_put(struct ib_device *device); |
|
struct ib_device *ib_device_get_by_netdev(struct net_device *ndev, |
|
enum rdma_driver_id driver_id); |
|
struct ib_device *ib_device_get_by_name(const char *name, |
|
enum rdma_driver_id driver_id); |
|
struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port, |
|
u16 pkey, const union ib_gid *gid, |
|
const struct sockaddr *addr); |
|
int ib_device_set_netdev(struct ib_device *ib_dev, struct net_device *ndev, |
|
unsigned int port); |
|
struct net_device *ib_device_netdev(struct ib_device *dev, u8 port); |
|
|
|
struct ib_wq *ib_create_wq(struct ib_pd *pd, |
|
struct ib_wq_init_attr *init_attr); |
|
int ib_destroy_wq_user(struct ib_wq *wq, struct ib_udata *udata); |
|
int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *attr, |
|
u32 wq_attr_mask); |
|
|
|
int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, |
|
unsigned int *sg_offset, unsigned int page_size); |
|
int ib_map_mr_sg_pi(struct ib_mr *mr, struct scatterlist *data_sg, |
|
int data_sg_nents, unsigned int *data_sg_offset, |
|
struct scatterlist *meta_sg, int meta_sg_nents, |
|
unsigned int *meta_sg_offset, unsigned int page_size); |
|
|
|
static inline int |
|
ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, |
|
unsigned int *sg_offset, unsigned int page_size) |
|
{ |
|
int n; |
|
|
|
n = ib_map_mr_sg(mr, sg, sg_nents, sg_offset, page_size); |
|
mr->iova = 0; |
|
|
|
return n; |
|
} |
|
|
|
int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, |
|
unsigned int *sg_offset, int (*set_page)(struct ib_mr *, u64)); |
|
|
|
void ib_drain_rq(struct ib_qp *qp); |
|
void ib_drain_sq(struct ib_qp *qp); |
|
void ib_drain_qp(struct ib_qp *qp); |
|
|
|
int ib_get_eth_speed(struct ib_device *dev, u8 port_num, u16 *speed, u8 *width); |
|
|
|
static inline u8 *rdma_ah_retrieve_dmac(struct rdma_ah_attr *attr) |
|
{ |
|
if (attr->type == RDMA_AH_ATTR_TYPE_ROCE) |
|
return attr->roce.dmac; |
|
return NULL; |
|
} |
|
|
|
static inline void rdma_ah_set_dlid(struct rdma_ah_attr *attr, u32 dlid) |
|
{ |
|
if (attr->type == RDMA_AH_ATTR_TYPE_IB) |
|
attr->ib.dlid = (u16)dlid; |
|
else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
|
attr->opa.dlid = dlid; |
|
} |
|
|
|
static inline u32 rdma_ah_get_dlid(const struct rdma_ah_attr *attr) |
|
{ |
|
if (attr->type == RDMA_AH_ATTR_TYPE_IB) |
|
return attr->ib.dlid; |
|
else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
|
return attr->opa.dlid; |
|
return 0; |
|
} |
|
|
|
static inline void rdma_ah_set_sl(struct rdma_ah_attr *attr, u8 sl) |
|
{ |
|
attr->sl = sl; |
|
} |
|
|
|
static inline u8 rdma_ah_get_sl(const struct rdma_ah_attr *attr) |
|
{ |
|
return attr->sl; |
|
} |
|
|
|
static inline void rdma_ah_set_path_bits(struct rdma_ah_attr *attr, |
|
u8 src_path_bits) |
|
{ |
|
if (attr->type == RDMA_AH_ATTR_TYPE_IB) |
|
attr->ib.src_path_bits = src_path_bits; |
|
else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
|
attr->opa.src_path_bits = src_path_bits; |
|
} |
|
|
|
static inline u8 rdma_ah_get_path_bits(const struct rdma_ah_attr *attr) |
|
{ |
|
if (attr->type == RDMA_AH_ATTR_TYPE_IB) |
|
return attr->ib.src_path_bits; |
|
else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
|
return attr->opa.src_path_bits; |
|
return 0; |
|
} |
|
|
|
static inline void rdma_ah_set_make_grd(struct rdma_ah_attr *attr, |
|
bool make_grd) |
|
{ |
|
if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
|
attr->opa.make_grd = make_grd; |
|
} |
|
|
|
static inline bool rdma_ah_get_make_grd(const struct rdma_ah_attr *attr) |
|
{ |
|
if (attr->type == RDMA_AH_ATTR_TYPE_OPA) |
|
return attr->opa.make_grd; |
|
return false; |
|
} |
|
|
|
static inline void rdma_ah_set_port_num(struct rdma_ah_attr *attr, u8 port_num) |
|
{ |
|
attr->port_num = port_num; |
|
} |
|
|
|
static inline u8 rdma_ah_get_port_num(const struct rdma_ah_attr *attr) |
|
{ |
|
return attr->port_num; |
|
} |
|
|
|
static inline void rdma_ah_set_static_rate(struct rdma_ah_attr *attr, |
|
u8 static_rate) |
|
{ |
|
attr->static_rate = static_rate; |
|
} |
|
|
|
static inline u8 rdma_ah_get_static_rate(const struct rdma_ah_attr *attr) |
|
{ |
|
return attr->static_rate; |
|
} |
|
|
|
static inline void rdma_ah_set_ah_flags(struct rdma_ah_attr *attr, |
|
enum ib_ah_flags flag) |
|
{ |
|
attr->ah_flags = flag; |
|
} |
|
|
|
static inline enum ib_ah_flags |
|
rdma_ah_get_ah_flags(const struct rdma_ah_attr *attr) |
|
{ |
|
return attr->ah_flags; |
|
} |
|
|
|
static inline const struct ib_global_route |
|
*rdma_ah_read_grh(const struct rdma_ah_attr *attr) |
|
{ |
|
return &attr->grh; |
|
} |
|
|
|
/*To retrieve and modify the grh */ |
|
static inline struct ib_global_route |
|
*rdma_ah_retrieve_grh(struct rdma_ah_attr *attr) |
|
{ |
|
return &attr->grh; |
|
} |
|
|
|
static inline void rdma_ah_set_dgid_raw(struct rdma_ah_attr *attr, void *dgid) |
|
{ |
|
struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); |
|
|
|
memcpy(grh->dgid.raw, dgid, sizeof(grh->dgid)); |
|
} |
|
|
|
static inline void rdma_ah_set_subnet_prefix(struct rdma_ah_attr *attr, |
|
__be64 prefix) |
|
{ |
|
struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); |
|
|
|
grh->dgid.global.subnet_prefix = prefix; |
|
} |
|
|
|
static inline void rdma_ah_set_interface_id(struct rdma_ah_attr *attr, |
|
__be64 if_id) |
|
{ |
|
struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); |
|
|
|
grh->dgid.global.interface_id = if_id; |
|
} |
|
|
|
static inline void rdma_ah_set_grh(struct rdma_ah_attr *attr, |
|
union ib_gid *dgid, u32 flow_label, |
|
u8 sgid_index, u8 hop_limit, |
|
u8 traffic_class) |
|
{ |
|
struct ib_global_route *grh = rdma_ah_retrieve_grh(attr); |
|
|
|
attr->ah_flags = IB_AH_GRH; |
|
if (dgid) |
|
grh->dgid = *dgid; |
|
grh->flow_label = flow_label; |
|
grh->sgid_index = sgid_index; |
|
grh->hop_limit = hop_limit; |
|
grh->traffic_class = traffic_class; |
|
grh->sgid_attr = NULL; |
|
} |
|
|
|
void rdma_destroy_ah_attr(struct rdma_ah_attr *ah_attr); |
|
void rdma_move_grh_sgid_attr(struct rdma_ah_attr *attr, union ib_gid *dgid, |
|
u32 flow_label, u8 hop_limit, u8 traffic_class, |
|
const struct ib_gid_attr *sgid_attr); |
|
void rdma_copy_ah_attr(struct rdma_ah_attr *dest, |
|
const struct rdma_ah_attr *src); |
|
void rdma_replace_ah_attr(struct rdma_ah_attr *old, |
|
const struct rdma_ah_attr *new); |
|
void rdma_move_ah_attr(struct rdma_ah_attr *dest, struct rdma_ah_attr *src); |
|
|
|
/** |
|
* rdma_ah_find_type - Return address handle type. |
|
* |
|
* @dev: Device to be checked |
|
* @port_num: Port number |
|
*/ |
|
static inline enum rdma_ah_attr_type rdma_ah_find_type(struct ib_device *dev, |
|
u8 port_num) |
|
{ |
|
if (rdma_protocol_roce(dev, port_num)) |
|
return RDMA_AH_ATTR_TYPE_ROCE; |
|
if (rdma_protocol_ib(dev, port_num)) { |
|
if (rdma_cap_opa_ah(dev, port_num)) |
|
return RDMA_AH_ATTR_TYPE_OPA; |
|
return RDMA_AH_ATTR_TYPE_IB; |
|
} |
|
|
|
return RDMA_AH_ATTR_TYPE_UNDEFINED; |
|
} |
|
|
|
/** |
|
* ib_lid_cpu16 - Return lid in 16bit CPU encoding. |
|
* In the current implementation the only way to get |
|
* get the 32bit lid is from other sources for OPA. |
|
* For IB, lids will always be 16bits so cast the |
|
* value accordingly. |
|
* |
|
* @lid: A 32bit LID |
|
*/ |
|
static inline u16 ib_lid_cpu16(u32 lid) |
|
{ |
|
WARN_ON_ONCE(lid & 0xFFFF0000); |
|
return (u16)lid; |
|
} |
|
|
|
/** |
|
* ib_lid_be16 - Return lid in 16bit BE encoding. |
|
* |
|
* @lid: A 32bit LID |
|
*/ |
|
static inline __be16 ib_lid_be16(u32 lid) |
|
{ |
|
WARN_ON_ONCE(lid & 0xFFFF0000); |
|
return cpu_to_be16((u16)lid); |
|
} |
|
|
|
/** |
|
* ib_get_vector_affinity - Get the affinity mappings of a given completion |
|
* vector |
|
* @device: the rdma device |
|
* @comp_vector: index of completion vector |
|
* |
|
* Returns NULL on failure, otherwise a corresponding cpu map of the |
|
* completion vector (returns all-cpus map if the device driver doesn't |
|
* implement get_vector_affinity). |
|
*/ |
|
static inline const struct cpumask * |
|
ib_get_vector_affinity(struct ib_device *device, int comp_vector) |
|
{ |
|
if (comp_vector < 0 || comp_vector >= device->num_comp_vectors || |
|
!device->ops.get_vector_affinity) |
|
return NULL; |
|
|
|
return device->ops.get_vector_affinity(device, comp_vector); |
|
|
|
} |
|
|
|
/** |
|
* rdma_roce_rescan_device - Rescan all of the network devices in the system |
|
* and add their gids, as needed, to the relevant RoCE devices. |
|
* |
|
* @device: the rdma device |
|
*/ |
|
void rdma_roce_rescan_device(struct ib_device *ibdev); |
|
|
|
struct ib_ucontext *ib_uverbs_get_ucontext_file(struct ib_uverbs_file *ufile); |
|
|
|
int uverbs_destroy_def_handler(struct uverbs_attr_bundle *attrs); |
|
|
|
struct net_device *rdma_alloc_netdev(struct ib_device *device, u8 port_num, |
|
enum rdma_netdev_t type, const char *name, |
|
unsigned char name_assign_type, |
|
void (*setup)(struct net_device *)); |
|
|
|
int rdma_init_netdev(struct ib_device *device, u8 port_num, |
|
enum rdma_netdev_t type, const char *name, |
|
unsigned char name_assign_type, |
|
void (*setup)(struct net_device *), |
|
struct net_device *netdev); |
|
|
|
/** |
|
* rdma_set_device_sysfs_group - Set device attributes group to have |
|
* driver specific sysfs entries at |
|
* for infiniband class. |
|
* |
|
* @device: device pointer for which attributes to be created |
|
* @group: Pointer to group which should be added when device |
|
* is registered with sysfs. |
|
* rdma_set_device_sysfs_group() allows existing drivers to expose one |
|
* group per device to have sysfs attributes. |
|
* |
|
* NOTE: New drivers should not make use of this API; instead new device |
|
* parameter should be exposed via netlink command. This API and mechanism |
|
* exist only for existing drivers. |
|
*/ |
|
static inline void |
|
rdma_set_device_sysfs_group(struct ib_device *dev, |
|
const struct attribute_group *group) |
|
{ |
|
dev->groups[1] = group; |
|
} |
|
|
|
/** |
|
* rdma_device_to_ibdev - Get ib_device pointer from device pointer |
|
* |
|
* @device: device pointer for which ib_device pointer to retrieve |
|
* |
|
* rdma_device_to_ibdev() retrieves ib_device pointer from device. |
|
* |
|
*/ |
|
static inline struct ib_device *rdma_device_to_ibdev(struct device *device) |
|
{ |
|
struct ib_core_device *coredev = |
|
container_of(device, struct ib_core_device, dev); |
|
|
|
return coredev->owner; |
|
} |
|
|
|
/** |
|
* ibdev_to_node - return the NUMA node for a given ib_device |
|
* @dev: device to get the NUMA node for. |
|
*/ |
|
static inline int ibdev_to_node(struct ib_device *ibdev) |
|
{ |
|
struct device *parent = ibdev->dev.parent; |
|
|
|
if (!parent) |
|
return NUMA_NO_NODE; |
|
return dev_to_node(parent); |
|
} |
|
|
|
/** |
|
* rdma_device_to_drv_device - Helper macro to reach back to driver's |
|
* ib_device holder structure from device pointer. |
|
* |
|
* NOTE: New drivers should not make use of this API; This API is only for |
|
* existing drivers who have exposed sysfs entries using |
|
* rdma_set_device_sysfs_group(). |
|
*/ |
|
#define rdma_device_to_drv_device(dev, drv_dev_struct, ibdev_member) \ |
|
container_of(rdma_device_to_ibdev(dev), drv_dev_struct, ibdev_member) |
|
|
|
bool rdma_dev_access_netns(const struct ib_device *device, |
|
const struct net *net); |
|
|
|
#define IB_ROCE_UDP_ENCAP_VALID_PORT_MIN (0xC000) |
|
#define IB_ROCE_UDP_ENCAP_VALID_PORT_MAX (0xFFFF) |
|
#define IB_GRH_FLOWLABEL_MASK (0x000FFFFF) |
|
|
|
/** |
|
* rdma_flow_label_to_udp_sport - generate a RoCE v2 UDP src port value based |
|
* on the flow_label |
|
* |
|
* This function will convert the 20 bit flow_label input to a valid RoCE v2 |
|
* UDP src port 14 bit value. All RoCE V2 drivers should use this same |
|
* convention. |
|
*/ |
|
static inline u16 rdma_flow_label_to_udp_sport(u32 fl) |
|
{ |
|
u32 fl_low = fl & 0x03fff, fl_high = fl & 0xFC000; |
|
|
|
fl_low ^= fl_high >> 14; |
|
return (u16)(fl_low | IB_ROCE_UDP_ENCAP_VALID_PORT_MIN); |
|
} |
|
|
|
/** |
|
* rdma_calc_flow_label - generate a RDMA symmetric flow label value based on |
|
* local and remote qpn values |
|
* |
|
* This function folded the multiplication results of two qpns, 24 bit each, |
|
* fields, and converts it to a 20 bit results. |
|
* |
|
* This function will create symmetric flow_label value based on the local |
|
* and remote qpn values. this will allow both the requester and responder |
|
* to calculate the same flow_label for a given connection. |
|
* |
|
* This helper function should be used by driver in case the upper layer |
|
* provide a zero flow_label value. This is to improve entropy of RDMA |
|
* traffic in the network. |
|
*/ |
|
static inline u32 rdma_calc_flow_label(u32 lqpn, u32 rqpn) |
|
{ |
|
u64 v = (u64)lqpn * rqpn; |
|
|
|
v ^= v >> 20; |
|
v ^= v >> 40; |
|
|
|
return (u32)(v & IB_GRH_FLOWLABEL_MASK); |
|
} |
|
|
|
const struct ib_port_immutable* |
|
ib_port_immutable_read(struct ib_device *dev, unsigned int port); |
|
#endif /* IB_VERBS_H */
|
|
|