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IB/srpt: Preparations for adding RDMA/CM support 

Introduce a union in struct srpt_rdma_ch for member variables that
depend on the type of connection manager. Avoid that error messages
report the IB/CM ID.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
hifive-unleashed-5.1
Bart Van Assche 2018-01-16 16:14:16 -08:00 committed by Doug Ledford
parent fcf589364f
commit 090fa24bf2
2 changed files with 22 additions and 18 deletions
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32
drivers/infiniband/ulp/srpt/ib_srpt.c
View File

@ -215,12 +215,12 @@ static const char *get_ch_state_name(enum rdma_ch_state s)
*/
static void srpt_qp_event(struct ib_event *event, struct srpt_rdma_ch *ch)
{
pr_debug("QP event %d on cm_id=%p sess_name=%s state=%d\n",
event->event, ch->cm_id, ch->sess_name, ch->state);
pr_debug("QP event %d on ch=%p sess_name=%s state=%d\n",
event->event, ch, ch->sess_name, ch->state);
switch (event->event) {
case IB_EVENT_COMM_EST:
ib_cm_notify(ch->cm_id, event->event);
ib_cm_notify(ch->ib_cm.cm_id, event->event);
break;
case IB_EVENT_QP_LAST_WQE_REACHED:
pr_debug("%s-%d, state %s: received Last WQE event.\n",
@ -1097,7 +1097,7 @@ static int srpt_ch_qp_rtr(struct srpt_rdma_ch *ch, struct ib_qp *qp)
int ret;
qp_attr.qp_state = IB_QPS_RTR;
ret = ib_cm_init_qp_attr(ch->cm_id, &qp_attr, &attr_mask);
ret = ib_cm_init_qp_attr(ch->ib_cm.cm_id, &qp_attr, &attr_mask);
if (ret)
goto out;
@ -1127,7 +1127,7 @@ static int srpt_ch_qp_rts(struct srpt_rdma_ch *ch, struct ib_qp *qp)
int ret;
qp_attr.qp_state = IB_QPS_RTS;
ret = ib_cm_init_qp_attr(ch->cm_id, &qp_attr, &attr_mask);
ret = ib_cm_init_qp_attr(ch->ib_cm.cm_id, &qp_attr, &attr_mask);
if (ret)
goto out;
@ -1509,9 +1509,9 @@ static void srpt_handle_tsk_mgmt(struct srpt_rdma_ch *ch,
srp_tsk = recv_ioctx->ioctx.buf;
cmd = &send_ioctx->cmd;
pr_debug("recv tsk_mgmt fn %d for task_tag %lld and cmd tag %lld"
" cm_id %p sess %p\n", srp_tsk->tsk_mgmt_func,
srp_tsk->task_tag, srp_tsk->tag, ch->cm_id, ch->sess);
pr_debug("recv tsk_mgmt fn %d for task_tag %lld and cmd tag %lld ch %p sess %p\n",
srp_tsk->tsk_mgmt_func, srp_tsk->task_tag, srp_tsk->tag, ch,
ch->sess);
srpt_set_cmd_state(send_ioctx, SRPT_STATE_MGMT);
send_ioctx->cmd.tag = srp_tsk->tag;
@ -1762,9 +1762,9 @@ retry:
atomic_set(&ch->sq_wr_avail, qp_init->cap.max_send_wr);
pr_debug("%s: max_cqe= %d max_sge= %d sq_size = %d cm_id= %p\n",
pr_debug("%s: max_cqe= %d max_sge= %d sq_size = %d ch= %p\n",
__func__, ch->cq->cqe, qp_init->cap.max_send_sge,
qp_init->cap.max_send_wr, ch->cm_id);
qp_init->cap.max_send_wr, ch);
ret = srpt_init_ch_qp(ch, ch->qp);
if (ret)
@ -1849,9 +1849,9 @@ static int srpt_disconnect_ch(struct srpt_rdma_ch *ch)
if (!srpt_set_ch_state(ch, CH_DISCONNECTING))
return -ENOTCONN;
ret = ib_send_cm_dreq(ch->cm_id, NULL, 0);
ret = ib_send_cm_dreq(ch->ib_cm.cm_id, NULL, 0);
if (ret < 0)
ret = ib_send_cm_drep(ch->cm_id, NULL, 0);
ret = ib_send_cm_drep(ch->ib_cm.cm_id, NULL, 0);
if (ret < 0 && srpt_close_ch(ch))
ret = 0;
@ -2003,7 +2003,7 @@ static void srpt_release_channel_work(struct work_struct *w)
transport_deregister_session(se_sess);
ch->sess = NULL;
ib_destroy_cm_id(ch->cm_id);
ib_destroy_cm_id(ch->ib_cm.cm_id);
srpt_destroy_ch_ib(ch);
@ -2118,7 +2118,7 @@ static int srpt_cm_req_recv(struct ib_cm_id *cm_id,
ch->zw_cqe.done = srpt_zerolength_write_done;
INIT_WORK(&ch->release_work, srpt_release_channel_work);
ch->sport = &sdev->port[param->port - 1];
ch->cm_id = cm_id;
ch->ib_cm.cm_id = cm_id;
cm_id->context = ch;
/*
* ch->rq_size should be at least as large as the initiator queue
@ -2239,8 +2239,8 @@ static int srpt_cm_req_recv(struct ib_cm_id *cm_id,
goto destroy_ib;
}
pr_debug("Establish connection sess=%p name=%s cm_id=%p\n", ch->sess,
ch->sess_name, ch->cm_id);
pr_debug("Establish connection sess=%p name=%s ch=%p\n", ch->sess,
ch->sess_name, ch);
/* create srp_login_response */
rsp->opcode = SRP_LOGIN_RSP;

8
drivers/infiniband/ulp/srpt/ib_srpt.h
View File

@ -243,8 +243,8 @@ enum rdma_ch_state {
/**
* struct srpt_rdma_ch - RDMA channel
* @nexus: I_T nexus this channel is associated with.
* @cm_id: IB CM ID associated with the channel.
* @qp: IB queue pair used for communicating over this channel.
* @cm_id: IB CM ID associated with the channel.
* @cq: IB completion queue for this channel.
* @zw_cqe: Zero-length write CQE.
* @rcu: RCU head.
@ -275,8 +275,12 @@ enum rdma_ch_state {
*/
struct srpt_rdma_ch {
struct srpt_nexus *nexus;
struct ib_cm_id *cm_id;
struct ib_qp *qp;
union {
struct {
struct ib_cm_id *cm_id;
} ib_cm;
};
struct ib_cq *cq;
struct ib_cqe zw_cqe;
struct rcu_head rcu;