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Commit 55abf8df authored by Vipul Pandya's avatar Vipul Pandya Committed by Roland Dreier
Browse files

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: default avatarVipul Pandya <vipul@chelsio.com>
Signed-off-by: default avatarRoland Dreier <roland@purestorage.com>
parent 836dc9e3

drivers/infiniband/hw/cxgb4/cm.c

+10 −9
Original line number Original line Diff line number Diff line
@@ -1391,30 +1391,31 @@ static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb) 
	skb_pull(skb, sizeof(*hdr));

	skb_pull(skb, sizeof(*hdr));

	skb_trim(skb, dlen);

	skb_trim(skb, dlen);





	ep->rcv_seq += dlen;

	BUG_ON(ep->rcv_seq != (ntohl(hdr->seq) + dlen));



	/* update RX credits */

	/* update RX credits */

	update_rx_credits(ep, dlen);

	update_rx_credits(ep, dlen);





	switch (state_read(&ep->com)) {

	switch (state_read(&ep->com)) {

	case MPA_REQ_SENT:

	case MPA_REQ_SENT:

		ep->rcv_seq += dlen;

		process_mpa_reply(ep, skb);

		process_mpa_reply(ep, skb);

		break;

		break;

	case MPA_REQ_WAIT:

	case MPA_REQ_WAIT:

		ep->rcv_seq += dlen;

		process_mpa_request(ep, skb);

		process_mpa_request(ep, skb);

		break;

		break;

	case MPA_REP_SENT:

		break;

	default:

	default:

		pr_err("%s Unexpected streaming data." \

		pr_err("%s Unexpected streaming data." \

		       " ep %p state %d tid %u status %d\n",

		       " ep %p state %d tid %u status %d\n",

		       __func__, ep, state_read(&ep->com), ep->hwtid, status);

		       __func__, ep, state_read(&ep->com), ep->hwtid, status);





		/*

		if (ep->com.qp) {

		 * The ep will timeout and inform the ULP of the failure.

			struct c4iw_qp_attributes attrs;

		 * See ep_timeout().



		 */

			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;

		break;

	}

	}

	return 0;

	return 0;