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IB/mad: Handle DR SMPs with a LID routed part

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

Signed-off-by: Ralph Campbell <ralphc@pathscale.com>
Signed-off-by: Hal Rosenstock <halr@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Ralph Campbell 2006-02-03 14:28:48 -08:00 committed by Roland Dreier
parent 3c3b809e25
commit 8cf3f04f45
1 changed files with 9 additions and 1 deletions
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10
drivers/infiniband/core/mad.c
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@ -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;