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133 lines
3.3 KiB
133 lines
3.3 KiB
/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */ |
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/* Authors: Bernard Metzler <[email protected]> */ |
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/* Greg Joyce <[email protected]> */ |
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/* Copyright (c) 2008-2019, IBM Corporation */ |
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/* Copyright (c) 2017, Open Grid Computing, Inc. */ |
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#ifndef _SIW_CM_H |
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#define _SIW_CM_H |
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#include <net/sock.h> |
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#include <linux/tcp.h> |
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#include <rdma/iw_cm.h> |
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enum siw_cep_state { |
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SIW_EPSTATE_IDLE = 1, |
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SIW_EPSTATE_LISTENING, |
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SIW_EPSTATE_CONNECTING, |
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SIW_EPSTATE_AWAIT_MPAREQ, |
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SIW_EPSTATE_RECVD_MPAREQ, |
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SIW_EPSTATE_AWAIT_MPAREP, |
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SIW_EPSTATE_RDMA_MODE, |
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SIW_EPSTATE_CLOSED |
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}; |
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struct siw_mpa_info { |
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struct mpa_rr hdr; /* peer mpa hdr in host byte order */ |
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struct mpa_v2_data v2_ctrl; |
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struct mpa_v2_data v2_ctrl_req; |
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char *pdata; |
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int bytes_rcvd; |
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}; |
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struct siw_device; |
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struct siw_cep { |
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struct iw_cm_id *cm_id; |
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struct siw_device *sdev; |
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struct list_head devq; |
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spinlock_t lock; |
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struct kref ref; |
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int in_use; |
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wait_queue_head_t waitq; |
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enum siw_cep_state state; |
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struct list_head listenq; |
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struct siw_cep *listen_cep; |
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struct siw_qp *qp; |
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struct socket *sock; |
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struct siw_cm_work *mpa_timer; |
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struct list_head work_freelist; |
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struct siw_mpa_info mpa; |
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int ord; |
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int ird; |
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bool enhanced_rdma_conn_est; |
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/* Saved upcalls of socket */ |
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void (*sk_state_change)(struct sock *sk); |
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void (*sk_data_ready)(struct sock *sk); |
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void (*sk_write_space)(struct sock *sk); |
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void (*sk_error_report)(struct sock *sk); |
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}; |
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/* |
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* Connection initiator waits 10 seconds to receive an |
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* MPA reply after sending out MPA request. Reponder waits for |
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* 5 seconds for MPA request to arrive if new TCP connection |
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* was set up. |
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*/ |
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#define MPAREQ_TIMEOUT (HZ * 10) |
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#define MPAREP_TIMEOUT (HZ * 5) |
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enum siw_work_type { |
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SIW_CM_WORK_ACCEPT = 1, |
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SIW_CM_WORK_READ_MPAHDR, |
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SIW_CM_WORK_CLOSE_LLP, /* close socket */ |
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SIW_CM_WORK_PEER_CLOSE, /* socket indicated peer close */ |
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SIW_CM_WORK_MPATIMEOUT |
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}; |
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struct siw_cm_work { |
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struct delayed_work work; |
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struct list_head list; |
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enum siw_work_type type; |
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struct siw_cep *cep; |
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}; |
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#define to_sockaddr_in(a) (*(struct sockaddr_in *)(&(a))) |
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#define to_sockaddr_in6(a) (*(struct sockaddr_in6 *)(&(a))) |
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static inline int getname_peer(struct socket *s, struct sockaddr_storage *a) |
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{ |
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return s->ops->getname(s, (struct sockaddr *)a, 1); |
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} |
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static inline int getname_local(struct socket *s, struct sockaddr_storage *a) |
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{ |
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return s->ops->getname(s, (struct sockaddr *)a, 0); |
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} |
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static inline int ksock_recv(struct socket *sock, char *buf, size_t size, |
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int flags) |
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{ |
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struct kvec iov = { buf, size }; |
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struct msghdr msg = { .msg_name = NULL, .msg_flags = flags }; |
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return kernel_recvmsg(sock, &msg, &iov, 1, size, flags); |
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} |
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int siw_connect(struct iw_cm_id *id, struct iw_cm_conn_param *parm); |
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int siw_accept(struct iw_cm_id *id, struct iw_cm_conn_param *param); |
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int siw_reject(struct iw_cm_id *id, const void *data, u8 len); |
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int siw_create_listen(struct iw_cm_id *id, int backlog); |
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int siw_destroy_listen(struct iw_cm_id *id); |
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void siw_cep_get(struct siw_cep *cep); |
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void siw_cep_put(struct siw_cep *cep); |
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int siw_cm_queue_work(struct siw_cep *cep, enum siw_work_type type); |
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int siw_cm_init(void); |
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void siw_cm_exit(void); |
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/* |
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* TCP socket interface |
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*/ |
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#define sk_to_qp(sk) (((struct siw_cep *)((sk)->sk_user_data))->qp) |
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#define sk_to_cep(sk) ((struct siw_cep *)((sk)->sk_user_data)) |
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#endif
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