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authorHariprasad S <hariprasad@chelsio.com>2016-05-06 19:47:54 +0300
committerDoug Ledford <dledford@redhat.com>2016-05-14 02:38:04 +0300
commit9ca6f7cf9c9e2ae9a28618be320d09407c312a46 (patch)
treeb281114982d1c36542597d4a6cec55406dc0e03c /drivers/infiniband/hw/cxgb4
parent321aebb880d2bfdf9cff503f57207e930aee6b1d (diff)
downloadlinux-9ca6f7cf9c9e2ae9a28618be320d09407c312a46.tar.xz
RDMA/iw_cxgb4: Add few history bits for ep
- add EP_DISC_FAIL history bit - add QP_REFED/DEREFED history bits - Add functions to ref/deref the cm_id and add history bit for the same - add CLOSE_CON_RPL history Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/cxgb4')
-rw-r--r--drivers/infiniband/hw/cxgb4/cm.c46
-rw-r--r--drivers/infiniband/hw/cxgb4/iw_cxgb4.h8
2 files changed, 36 insertions, 18 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index d7f7ab34eeba..42983aadf57f 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -150,15 +150,30 @@ static int sched(struct c4iw_dev *dev, struct sk_buff *skb);
static LIST_HEAD(timeout_list);
static spinlock_t timeout_lock;
+static void deref_cm_id(struct c4iw_ep_common *epc)
+{
+ epc->cm_id->rem_ref(epc->cm_id);
+ epc->cm_id = NULL;
+ set_bit(CM_ID_DEREFED, &epc->history);
+}
+
+static void ref_cm_id(struct c4iw_ep_common *epc)
+{
+ set_bit(CM_ID_REFED, &epc->history);
+ epc->cm_id->add_ref(epc->cm_id);
+}
+
static void deref_qp(struct c4iw_ep *ep)
{
c4iw_qp_rem_ref(&ep->com.qp->ibqp);
clear_bit(QP_REFERENCED, &ep->com.flags);
+ set_bit(QP_DEREFED, &ep->com.history);
}
static void ref_qp(struct c4iw_ep *ep)
{
set_bit(QP_REFERENCED, &ep->com.flags);
+ set_bit(QP_REFED, &ep->com.history);
c4iw_qp_add_ref(&ep->com.qp->ibqp);
}
@@ -1173,8 +1188,7 @@ static void close_complete_upcall(struct c4iw_ep *ep, int status)
PDBG("close complete delivered ep %p cm_id %p tid %u\n",
ep, ep->com.cm_id, ep->hwtid);
ep->com.cm_id->event_handler(ep->com.cm_id, &event);
- ep->com.cm_id->rem_ref(ep->com.cm_id);
- ep->com.cm_id = NULL;
+ deref_cm_id(&ep->com);
set_bit(CLOSE_UPCALL, &ep->com.history);
}
}
@@ -1206,8 +1220,7 @@ static void peer_abort_upcall(struct c4iw_ep *ep)
PDBG("abort delivered ep %p cm_id %p tid %u\n", ep,
ep->com.cm_id, ep->hwtid);
ep->com.cm_id->event_handler(ep->com.cm_id, &event);
- ep->com.cm_id->rem_ref(ep->com.cm_id);
- ep->com.cm_id = NULL;
+ deref_cm_id(&ep->com);
set_bit(ABORT_UPCALL, &ep->com.history);
}
}
@@ -1250,10 +1263,8 @@ static void connect_reply_upcall(struct c4iw_ep *ep, int status)
set_bit(CONN_RPL_UPCALL, &ep->com.history);
ep->com.cm_id->event_handler(ep->com.cm_id, &event);
- if (status < 0) {
- ep->com.cm_id->rem_ref(ep->com.cm_id);
- ep->com.cm_id = NULL;
- }
+ if (status < 0)
+ deref_cm_id(&ep->com);
}
static int connect_request_upcall(struct c4iw_ep *ep)
@@ -2818,6 +2829,7 @@ static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
/* The cm_id may be null if we failed to connect */
mutex_lock(&ep->com.mutex);
+ set_bit(CLOSE_CON_RPL, &ep->com.history);
switch (ep->com.state) {
case CLOSING:
__state_set(&ep->com, MORIBUND);
@@ -2998,8 +3010,8 @@ int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord);
- cm_id->add_ref(cm_id);
ep->com.cm_id = cm_id;
+ ref_cm_id(&ep->com);
ep->com.qp = qp;
ref_qp(ep);
@@ -3032,8 +3044,7 @@ int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
c4iw_put_ep(&ep->com);
return 0;
err_deref_cm_id:
- ep->com.cm_id = NULL;
- cm_id->rem_ref(cm_id);
+ deref_cm_id(&ep->com);
err_abort:
abort = 1;
err_out:
@@ -3139,9 +3150,9 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
if (peer2peer && ep->ord == 0)
ep->ord = 1;
- cm_id->add_ref(cm_id);
- ep->com.dev = dev;
ep->com.cm_id = cm_id;
+ ref_cm_id(&ep->com);
+ ep->com.dev = dev;
ep->com.qp = get_qhp(dev, conn_param->qpn);
if (!ep->com.qp) {
PDBG("%s qpn 0x%x not found!\n", __func__, conn_param->qpn);
@@ -3248,7 +3259,7 @@ fail2:
remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
fail1:
- cm_id->rem_ref(cm_id);
+ deref_cm_id(&ep->com);
c4iw_put_ep(&ep->com);
out:
return err;
@@ -3342,8 +3353,8 @@ int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
goto fail1;
}
PDBG("%s ep %p\n", __func__, ep);
- cm_id->add_ref(cm_id);
ep->com.cm_id = cm_id;
+ ref_cm_id(&ep->com);
ep->com.dev = dev;
ep->backlog = backlog;
memcpy(&ep->com.local_addr, &cm_id->m_local_addr,
@@ -3383,7 +3394,7 @@ int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
ep->com.local_addr.ss_family);
fail2:
- cm_id->rem_ref(cm_id);
+ deref_cm_id(&ep->com);
c4iw_put_ep(&ep->com);
fail1:
out:
@@ -3422,7 +3433,7 @@ int c4iw_destroy_listen(struct iw_cm_id *cm_id)
cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
ep->com.local_addr.ss_family);
done:
- cm_id->rem_ref(cm_id);
+ deref_cm_id(&ep->com);
c4iw_put_ep(&ep->com);
return err;
}
@@ -3497,6 +3508,7 @@ int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
ret = send_halfclose(ep, gfp);
}
if (ret) {
+ set_bit(EP_DISC_FAIL, &ep->com.history);
if (!abrupt) {
stop_ep_timer(ep);
close_complete_upcall(ep, -EIO);
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
index df43f871ab61..67710aeeb4f2 100644
--- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
+++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
@@ -779,7 +779,13 @@ enum c4iw_ep_history {
EP_DISC_ABORT = 18,
CONN_RPL_UPCALL = 19,
ACT_RETRY_NOMEM = 20,
- ACT_RETRY_INUSE = 21
+ ACT_RETRY_INUSE = 21,
+ CLOSE_CON_RPL = 22,
+ EP_DISC_FAIL = 24,
+ QP_REFED = 25,
+ QP_DEREFED = 26,
+ CM_ID_REFED = 27,
+ CM_ID_DEREFED = 28,
};
struct c4iw_ep_common {