IB/srpt: Log private data associated with REJ
To make it possible to determine why an initiator sent a REJ,
log the private data associated with the received REJ packet.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Alex Estrin <alex.estrin@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 10bc133..0bf204e 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -2252,8 +2252,18 @@
const u8 *private_data,
u8 private_data_len)
{
- pr_info("Received CM REJ for ch %s-%d; reason %d.\n",
- ch->sess_name, ch->qp->qp_num, reason);
+ char *priv = NULL;
+ int i;
+
+ if (private_data_len && (priv = kmalloc(private_data_len * 3 + 1,
+ GFP_KERNEL))) {
+ for (i = 0; i < private_data_len; i++)
+ sprintf(priv + 3 * i, " %02x", private_data[i]);
+ }
+ pr_info("Received CM REJ for ch %s-%d; reason %d%s%s.\n",
+ ch->sess_name, ch->qp->qp_num, reason, private_data_len ?
+ "; private data" : "", priv ? priv : " (?)");
+ kfree(priv);
srpt_drain_channel(ch);
}