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Commit 5a7d4eea authored by Bryan O'Sullivan's avatar Bryan O'Sullivan Committed by Roland Dreier
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IB/ipath: Discard multicast packets without a GRH 



This patch fixes a bug where multicast packets without a GRH were not
being dropped as per the IB spec.

Signed-off-by: default avatarRalph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: default avatarBryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 0ed3c594

drivers/infiniband/hw/ipath/ipath_verbs.c

+5 −2
Original line number Diff line number Diff line
@@ -438,6 +438,10 @@ void ipath_ib_rcv(struct ipath_ibdev *dev, void *rhdr, void *data, 
		struct ipath_mcast *mcast;

		struct ipath_mcast_qp *p;



		if (lnh != IPATH_LRH_GRH) {

			dev->n_pkt_drops++;

			goto bail;

		}

		mcast = ipath_mcast_find(&hdr->u.l.grh.dgid);

		if (mcast == NULL) {

			dev->n_pkt_drops++;
@@ -445,8 +449,7 @@ void ipath_ib_rcv(struct ipath_ibdev *dev, void *rhdr, void *data, 
		}

		dev->n_multicast_rcv++;

		list_for_each_entry_rcu(p, &mcast->qp_list, list)

			ipath_qp_rcv(dev, hdr, lnh == IPATH_LRH_GRH, data,

				     tlen, p->qp);

			ipath_qp_rcv(dev, hdr, 1, data, tlen, p->qp);

		/*

		 * Notify ipath_multicast_detach() if it is waiting for us

		 * to finish.