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Commit 8cf3f04f authored by Ralph Campbell's avatar Ralph Campbell Committed by Roland Dreier
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IB/mad: Handle DR SMPs with a LID routed part 



Fix handling of directed route SMPs with a beginning or ending LID
routed part.

Signed-off-by: default avatarRalph Campbell <ralphc@pathscale.com>
Signed-off-by: default avatarHal Rosenstock <halr@voltaire.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 3c3b809e

drivers/infiniband/core/mad.c

+9 −1
Original line number Diff line number Diff line
@@ -665,7 +665,15 @@ static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv, 
	struct ib_wc mad_wc;

	struct ib_send_wr *send_wr = &mad_send_wr->send_wr;



	if (!smi_handle_dr_smp_send(smp, device->node_type, port_num)) {

	/*

	 * Directed route handling starts if the initial LID routed part of

	 * a request or the ending LID routed part of a response is empty.

	 * If we are at the start of the LID routed part, don't update the

	 * hop_ptr or hop_cnt.  See section 14.2.2, Vol 1 IB spec.

	 */

	if ((ib_get_smp_direction(smp) ? smp->dr_dlid : smp->dr_slid) ==

	     IB_LID_PERMISSIVE &&

	    !smi_handle_dr_smp_send(smp, device->node_type, port_num)) {

		ret = -EINVAL;

		printk(KERN_ERR PFX "Invalid directed route\n");

		goto out;