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RDMA/cxgb3: Wake up any waiters on peer close/abort

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A close/abort while waiting for a wr_ack during connection migration
can cause a hung process in iwch_accept_cr/iwch_reject_cr.

The fix is to set rpl_error/rpl_done and wake up the waiters when we
get a close/abort while in MPA_REQ_RCVD state.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Steve Wise 2009-09-05 20:22:38 -07:00 committed by Roland Dreier
parent 6e47fe4350
commit a52bf98d99
1 changed files with 12 additions and 4 deletions
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16
drivers/infiniband/hw/cxgb3/iwch_cm.c
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@ -1478,9 +1478,14 @@ static int peer_close(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
/*
* We're gonna mark this puppy DEAD, but keep
* the reference on it until the ULP accepts or
* rejects the CR.
* rejects the CR. Also wake up anyone waiting
* in rdma connection migration (see iwch_accept_cr()).
*/
__state_set(&ep->com, CLOSING);
ep->com.rpl_done = 1;
ep->com.rpl_err = -ECONNRESET;
PDBG("waking up ep %p\n", ep);
wake_up(&ep->com.waitq);
break;
case MPA_REP_SENT:
__state_set(&ep->com, CLOSING);
@ -1588,8 +1593,13 @@ static int peer_abort(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
/*
* We're gonna mark this puppy DEAD, but keep
* the reference on it until the ULP accepts or
* rejects the CR.
* rejects the CR. Also wake up anyone waiting
* in rdma connection migration (see iwch_accept_cr()).
*/
ep->com.rpl_done = 1;
ep->com.rpl_err = -ECONNRESET;
PDBG("waking up ep %p\n", ep);
wake_up(&ep->com.waitq);
break;
case MORIBUND:
case CLOSING:
@ -1828,8 +1838,6 @@ int iwch_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
ep->com.cm_id = cm_id;
ep->com.qp = qp;
ep->com.rpl_done = 0;
ep->com.rpl_err = 0;
ep->ird = conn_param->ird;
ep->ord = conn_param->ord;