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 <[email protected]> --- drivers/infiniband/hw/cxgb3/iwch_cm.c | 16 ++++++++++++---- 1 files changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c index da38eff..d852b3c 100644 --- a/drivers/infiniband/hw/cxgb3/iwch_cm.c +++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c @@ -1479,9 +1479,14 @@ 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); @@ -1590,8 +1595,13 @@ 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: @@ -1830,8 +1840,6 @@ 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; _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
