From 55abf8df0aa080eb474f7f46337503351890b361 Mon Sep 17 00:00:00 2001
From: Vipul Pandya <vipul@chelsio.com>
Date: Mon, 7 Jan 2013 13:11:50 +0000
Subject: [PATCH] RDMA/cxgb4: Abort connections that receive unexpected
streaming mode data
This error means the RDMA connection was knocked out of RDMA mode,
probably due to an error on the connection.
Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
---
drivers/infiniband/hw/cxgb4/cm.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index c13745cde7fa..9cab6a6eb96a 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -1391,30 +1391,31 @@ static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb)
skb_pull(skb, sizeof(*hdr));
skb_trim(skb, dlen);
- ep->rcv_seq += dlen;
- BUG_ON(ep->rcv_seq != (ntohl(hdr->seq) + dlen));
-
/* update RX credits */
update_rx_credits(ep, dlen);
switch (state_read(&ep->com)) {
case MPA_REQ_SENT:
+ ep->rcv_seq += dlen;
process_mpa_reply(ep, skb);
break;
case MPA_REQ_WAIT:
+ ep->rcv_seq += dlen;
process_mpa_request(ep, skb);
break;
- case MPA_REP_SENT:
- break;
default:
pr_err("%s Unexpected streaming data." \
" ep %p state %d tid %u status %d\n",
__func__, ep, state_read(&ep->com), ep->hwtid, status);
- /*
- * The ep will timeout and inform the ULP of the failure.
- * See ep_timeout().
- */
+ if (ep->com.qp) {
+ struct c4iw_qp_attributes attrs;
+
+ attrs.next_state = C4IW_QP_STATE_ERROR;
+ c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
+ C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
+ }
+ c4iw_ep_disconnect(ep, 1, GFP_KERNEL);
break;
}
return 0;
--
2.34.1