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authorHariprasad S2016-05-06 22:17:59 +0530
committerDoug Ledford2016-05-13 19:38:06 -0400
commite4b76a2a2619e95deb1ae2b088c0aa4f24a0bbee (patch)
tree368507be6cf834bc0019f046fb8abc2dacd2540c /drivers/infiniband/hw/cxgb4
parentda1cecdffc13494bef012d598ed3dc1ed9572204 (diff)
RDMA/iw_cxgb4: stop_ep_timer() after MPA negotiation
->Stop the ep timer after MPA negotiation so that the arp failures during send_mpa_reply/reject will be handled by process_timeout() after the ep timer expires. ->Added case MPA_REP_SENT in process_timeout(). ->For MPA reject, c4iw_ep_disconnect tries to start an already started timer, which leads to warning message "timer already started". -> In case of mpa reject stop the timer and call send_mpa_reject(). -> Added new ep flag STOP_MPA_TIMER to tell fw4_ack() to stop the timer only for send_mpa_reply(), which is set in c4iw_accept_cr(). 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.c39
-rw-r--r--drivers/infiniband/hw/cxgb4/iw_cxgb4.h1
2 files changed, 20 insertions, 20 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index c7b3d5751963..410154c86061 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -1047,7 +1047,6 @@ static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen)
*/
skb_get(skb);
set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
- t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
BUG_ON(ep->mpa_skb);
ep->mpa_skb = skb;
ep->snd_seq += mpalen;
@@ -1132,7 +1131,6 @@ static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen)
* Function fw4_ack() will deref it.
*/
skb_get(skb);
- t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
ep->mpa_skb = skb;
__state_set(&ep->com, MPA_REP_SENT);
ep->snd_seq += mpalen;
@@ -1744,25 +1742,17 @@ static int process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb)
ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
ep->mpa_attr.p2p_type);
- /*
- * If the endpoint timer already expired, then we ignore
- * the start request. process_timeout() will abort
- * the connection.
- */
- if (!stop_ep_timer(ep)) {
- __state_set(&ep->com, MPA_REQ_RCVD);
-
- /* drive upcall */
- mutex_lock_nested(&ep->parent_ep->com.mutex,
- SINGLE_DEPTH_NESTING);
- if (ep->parent_ep->com.state != DEAD) {
- if (connect_request_upcall(ep))
- goto err_unlock_parent;
- } else {
+ __state_set(&ep->com, MPA_REQ_RCVD);
+
+ /* drive upcall */
+ mutex_lock_nested(&ep->parent_ep->com.mutex, SINGLE_DEPTH_NESTING);
+ if (ep->parent_ep->com.state != DEAD) {
+ if (connect_request_upcall(ep))
goto err_unlock_parent;
- }
- mutex_unlock(&ep->parent_ep->com.mutex);
+ } else {
+ goto err_unlock_parent;
}
+ mutex_unlock(&ep->parent_ep->com.mutex);
return 0;
err_unlock_parent:
@@ -2926,6 +2916,10 @@ static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb)
state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0);
kfree_skb(ep->mpa_skb);
ep->mpa_skb = NULL;
+ mutex_lock(&ep->com.mutex);
+ if (test_bit(STOP_MPA_TIMER, &ep->com.flags))
+ stop_ep_timer(ep);
+ mutex_unlock(&ep->com.mutex);
}
return 0;
}
@@ -2952,8 +2946,10 @@ int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
disconnect = 1;
}
mutex_unlock(&ep->com.mutex);
- if (disconnect)
+ if (disconnect) {
+ stop_ep_timer(ep);
err = c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL);
+ }
c4iw_put_ep(&ep->com);
return 0;
}
@@ -3047,6 +3043,8 @@ int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
ep->com.qp, mask, &attrs, 1);
if (err)
goto err_deref_cm_id;
+
+ set_bit(STOP_MPA_TIMER, &ep->com.flags);
err = send_mpa_reply(ep, conn_param->private_data,
conn_param->private_data_len);
if (err)
@@ -3968,6 +3966,7 @@ static void process_timeout(struct c4iw_ep *ep)
connect_reply_upcall(ep, -ETIMEDOUT);
break;
case MPA_REQ_WAIT:
+ case MPA_REP_SENT:
__state_set(&ep->com, ABORTING);
break;
case CLOSING:
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
index 67710aeeb4f2..d4e2b519a192 100644
--- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
+++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
@@ -755,6 +755,7 @@ enum c4iw_ep_flags {
CLOSE_SENT = 3,
TIMEOUT = 4,
QP_REFERENCED = 5,
+ STOP_MPA_TIMER = 7,
};
enum c4iw_ep_history {