mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
268 lines
8.1 KiB
268 lines
8.1 KiB
/* This file is part of the Emulex RoCE Device Driver for |
|
* RoCE (RDMA over Converged Ethernet) adapters. |
|
* Copyright (C) 2012-2015 Emulex. All rights reserved. |
|
* EMULEX and SLI are trademarks of Emulex. |
|
* www.emulex.com |
|
* |
|
* This software is available to you under a choice of one of two licenses. |
|
* You may choose to be licensed under the terms of the GNU General Public |
|
* License (GPL) Version 2, available from the file COPYING in the main |
|
* directory of this source tree, or the BSD license below: |
|
* |
|
* Redistribution and use in source and binary forms, with or without |
|
* modification, are permitted provided that the following conditions |
|
* are met: |
|
* |
|
* - Redistributions of source code must retain the above copyright notice, |
|
* this list of conditions and the following disclaimer. |
|
* |
|
* - Redistributions in binary form must reproduce the above copyright |
|
* notice, this list of conditions and the following disclaimer in |
|
* the documentation and/or other materials provided with the distribution. |
|
* |
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE |
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
|
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
|
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
* |
|
* Contact Information: |
|
* [email protected] |
|
* |
|
* Emulex |
|
* 3333 Susan Street |
|
* Costa Mesa, CA 92626 |
|
*/ |
|
|
|
#include <net/neighbour.h> |
|
#include <net/netevent.h> |
|
|
|
#include <rdma/ib_addr.h> |
|
#include <rdma/ib_mad.h> |
|
#include <rdma/ib_cache.h> |
|
|
|
#include "ocrdma.h" |
|
#include "ocrdma_verbs.h" |
|
#include "ocrdma_ah.h" |
|
#include "ocrdma_hw.h" |
|
#include "ocrdma_stats.h" |
|
|
|
#define OCRDMA_VID_PCP_SHIFT 0xD |
|
|
|
static u16 ocrdma_hdr_type_to_proto_num(int devid, u8 hdr_type) |
|
{ |
|
switch (hdr_type) { |
|
case OCRDMA_L3_TYPE_IB_GRH: |
|
return (u16)ETH_P_IBOE; |
|
case OCRDMA_L3_TYPE_IPV4: |
|
return (u16)0x0800; |
|
case OCRDMA_L3_TYPE_IPV6: |
|
return (u16)0x86dd; |
|
default: |
|
pr_err("ocrdma%d: Invalid network header\n", devid); |
|
return 0; |
|
} |
|
} |
|
|
|
static inline int set_av_attr(struct ocrdma_dev *dev, struct ocrdma_ah *ah, |
|
struct rdma_ah_attr *attr, const union ib_gid *sgid, |
|
int pdid, bool *isvlan, u16 vlan_tag) |
|
{ |
|
int status; |
|
struct ocrdma_eth_vlan eth; |
|
struct ocrdma_grh grh; |
|
int eth_sz; |
|
u16 proto_num = 0; |
|
u8 nxthdr = 0x11; |
|
struct iphdr ipv4; |
|
const struct ib_global_route *ib_grh; |
|
union { |
|
struct sockaddr_in _sockaddr_in; |
|
struct sockaddr_in6 _sockaddr_in6; |
|
} sgid_addr, dgid_addr; |
|
|
|
memset(ð, 0, sizeof(eth)); |
|
memset(&grh, 0, sizeof(grh)); |
|
|
|
/* Protocol Number */ |
|
proto_num = ocrdma_hdr_type_to_proto_num(dev->id, ah->hdr_type); |
|
if (!proto_num) |
|
return -EINVAL; |
|
nxthdr = (proto_num == ETH_P_IBOE) ? 0x1b : 0x11; |
|
/* VLAN */ |
|
if (!vlan_tag || (vlan_tag > 0xFFF)) |
|
vlan_tag = dev->pvid; |
|
if (vlan_tag || dev->pfc_state) { |
|
if (!vlan_tag) { |
|
pr_err("ocrdma%d:Using VLAN with PFC is recommended\n", |
|
dev->id); |
|
pr_err("ocrdma%d:Using VLAN 0 for this connection\n", |
|
dev->id); |
|
} |
|
eth.eth_type = cpu_to_be16(0x8100); |
|
eth.roce_eth_type = cpu_to_be16(proto_num); |
|
vlan_tag |= (dev->sl & 0x07) << OCRDMA_VID_PCP_SHIFT; |
|
eth.vlan_tag = cpu_to_be16(vlan_tag); |
|
eth_sz = sizeof(struct ocrdma_eth_vlan); |
|
*isvlan = true; |
|
} else { |
|
eth.eth_type = cpu_to_be16(proto_num); |
|
eth_sz = sizeof(struct ocrdma_eth_basic); |
|
} |
|
/* MAC */ |
|
memcpy(ð.smac[0], &dev->nic_info.mac_addr[0], ETH_ALEN); |
|
status = ocrdma_resolve_dmac(dev, attr, ð.dmac[0]); |
|
if (status) |
|
return status; |
|
ib_grh = rdma_ah_read_grh(attr); |
|
ah->sgid_index = ib_grh->sgid_index; |
|
/* Eth HDR */ |
|
memcpy(&ah->av->eth_hdr, ð, eth_sz); |
|
if (ah->hdr_type == RDMA_NETWORK_IPV4) { |
|
*((__be16 *)&ipv4) = htons((4 << 12) | (5 << 8) | |
|
ib_grh->traffic_class); |
|
ipv4.id = cpu_to_be16(pdid); |
|
ipv4.frag_off = htons(IP_DF); |
|
ipv4.tot_len = htons(0); |
|
ipv4.ttl = ib_grh->hop_limit; |
|
ipv4.protocol = nxthdr; |
|
rdma_gid2ip((struct sockaddr *)&sgid_addr, sgid); |
|
ipv4.saddr = sgid_addr._sockaddr_in.sin_addr.s_addr; |
|
rdma_gid2ip((struct sockaddr*)&dgid_addr, &ib_grh->dgid); |
|
ipv4.daddr = dgid_addr._sockaddr_in.sin_addr.s_addr; |
|
memcpy((u8 *)ah->av + eth_sz, &ipv4, sizeof(struct iphdr)); |
|
} else { |
|
memcpy(&grh.sgid[0], sgid->raw, sizeof(union ib_gid)); |
|
grh.tclass_flow = cpu_to_be32((6 << 28) | |
|
(ib_grh->traffic_class << 24) | |
|
ib_grh->flow_label); |
|
memcpy(&grh.dgid[0], ib_grh->dgid.raw, |
|
sizeof(ib_grh->dgid.raw)); |
|
grh.pdid_hoplimit = cpu_to_be32((pdid << 16) | |
|
(nxthdr << 8) | |
|
ib_grh->hop_limit); |
|
memcpy((u8 *)ah->av + eth_sz, &grh, sizeof(struct ocrdma_grh)); |
|
} |
|
if (*isvlan) |
|
ah->av->valid |= OCRDMA_AV_VLAN_VALID; |
|
ah->av->valid = cpu_to_le32(ah->av->valid); |
|
return status; |
|
} |
|
|
|
int ocrdma_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr, |
|
struct ib_udata *udata) |
|
{ |
|
u32 *ahid_addr; |
|
int status; |
|
struct ocrdma_ah *ah = get_ocrdma_ah(ibah); |
|
bool isvlan = false; |
|
u16 vlan_tag = 0xffff; |
|
const struct ib_gid_attr *sgid_attr; |
|
struct ocrdma_pd *pd = get_ocrdma_pd(ibah->pd); |
|
struct rdma_ah_attr *attr = init_attr->ah_attr; |
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibah->device); |
|
|
|
if ((attr->type != RDMA_AH_ATTR_TYPE_ROCE) || |
|
!(rdma_ah_get_ah_flags(attr) & IB_AH_GRH)) |
|
return -EINVAL; |
|
|
|
if (atomic_cmpxchg(&dev->update_sl, 1, 0)) |
|
ocrdma_init_service_level(dev); |
|
|
|
sgid_attr = attr->grh.sgid_attr; |
|
status = rdma_read_gid_l2_fields(sgid_attr, &vlan_tag, NULL); |
|
if (status) |
|
return status; |
|
|
|
status = ocrdma_alloc_av(dev, ah); |
|
if (status) |
|
goto av_err; |
|
|
|
/* Get network header type for this GID */ |
|
ah->hdr_type = rdma_gid_attr_network_type(sgid_attr); |
|
|
|
status = set_av_attr(dev, ah, attr, &sgid_attr->gid, pd->id, |
|
&isvlan, vlan_tag); |
|
if (status) |
|
goto av_conf_err; |
|
|
|
/* if pd is for the user process, pass the ah_id to user space */ |
|
if ((pd->uctx) && (pd->uctx->ah_tbl.va)) { |
|
ahid_addr = pd->uctx->ah_tbl.va + rdma_ah_get_dlid(attr); |
|
*ahid_addr = 0; |
|
*ahid_addr |= ah->id & OCRDMA_AH_ID_MASK; |
|
if (ocrdma_is_udp_encap_supported(dev)) { |
|
*ahid_addr |= ((u32)ah->hdr_type & |
|
OCRDMA_AH_L3_TYPE_MASK) << |
|
OCRDMA_AH_L3_TYPE_SHIFT; |
|
} |
|
if (isvlan) |
|
*ahid_addr |= (OCRDMA_AH_VLAN_VALID_MASK << |
|
OCRDMA_AH_VLAN_VALID_SHIFT); |
|
} |
|
|
|
return 0; |
|
|
|
av_conf_err: |
|
ocrdma_free_av(dev, ah); |
|
av_err: |
|
return status; |
|
} |
|
|
|
int ocrdma_destroy_ah(struct ib_ah *ibah, u32 flags) |
|
{ |
|
struct ocrdma_ah *ah = get_ocrdma_ah(ibah); |
|
struct ocrdma_dev *dev = get_ocrdma_dev(ibah->device); |
|
|
|
ocrdma_free_av(dev, ah); |
|
return 0; |
|
} |
|
|
|
int ocrdma_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr) |
|
{ |
|
struct ocrdma_ah *ah = get_ocrdma_ah(ibah); |
|
struct ocrdma_av *av = ah->av; |
|
struct ocrdma_grh *grh; |
|
|
|
attr->type = ibah->type; |
|
if (ah->av->valid & OCRDMA_AV_VALID) { |
|
grh = (struct ocrdma_grh *)((u8 *)ah->av + |
|
sizeof(struct ocrdma_eth_vlan)); |
|
rdma_ah_set_sl(attr, be16_to_cpu(av->eth_hdr.vlan_tag) >> 13); |
|
} else { |
|
grh = (struct ocrdma_grh *)((u8 *)ah->av + |
|
sizeof(struct ocrdma_eth_basic)); |
|
rdma_ah_set_sl(attr, 0); |
|
} |
|
rdma_ah_set_grh(attr, NULL, |
|
be32_to_cpu(grh->tclass_flow) & 0xffffffff, |
|
ah->sgid_index, |
|
be32_to_cpu(grh->pdid_hoplimit) & 0xff, |
|
be32_to_cpu(grh->tclass_flow) >> 24); |
|
rdma_ah_set_dgid_raw(attr, &grh->dgid[0]); |
|
return 0; |
|
} |
|
|
|
int ocrdma_process_mad(struct ib_device *ibdev, int process_mad_flags, |
|
u8 port_num, const struct ib_wc *in_wc, |
|
const struct ib_grh *in_grh, const struct ib_mad *in, |
|
struct ib_mad *out, size_t *out_mad_size, |
|
u16 *out_mad_pkey_index) |
|
{ |
|
int status = IB_MAD_RESULT_SUCCESS; |
|
struct ocrdma_dev *dev; |
|
|
|
if (in->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT) { |
|
dev = get_ocrdma_dev(ibdev); |
|
ocrdma_pma_counters(dev, out); |
|
status |= IB_MAD_RESULT_REPLY; |
|
} |
|
|
|
return status; |
|
}
|
|
|