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IB/srp: Fix a connection setup race 

Avoid that receiving a DREQ while RDMA channels are being
established causes target->qp_in_error to be reset.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Sebastian Parschauer <sebastian.riemer@profitbricks.com>
Cc: <stable@vger.kernel.org> #v3.19
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Bart Van Assche 2015-05-18 13:23:36 +02:00 committed by Doug Ledford
parent fb49c8bbaa
commit 8de9fe3a1d
1 changed files with 3 additions and 2 deletions
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5
drivers/infiniband/ulp/srp/ib_srp.c
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@ -993,8 +993,6 @@ static int srp_connect_ch(struct srp_rdma_ch *ch, bool multich)
WARN_ON_ONCE(!multich && target->connected);
target->qp_in_error = false;
ret = srp_lookup_path(ch);
if (ret)
return ret;
@ -1243,6 +1241,9 @@ static int srp_rport_reconnect(struct srp_rport *rport)
for (j = 0; j < target->queue_size; ++j)
list_add(&ch->tx_ring[j]->list, &ch->free_tx);
}
target->qp_in_error = false;
for (i = 0; i < target->ch_count; i++) {
ch = &target->ch[i];
if (ret || !ch->target) {