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@xxxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Cc: Sagi Grimberg <sagig@xxxxxxxxxxxx>
Cc: Alex Estrin <alex.estrin@xxxxxxxxx>
---
drivers/infiniband/ulp/srpt/ib_srpt.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 10bc133..d9bac93 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -2252,8 +2252,17 @@ static void srpt_cm_rej_recv(struct srpt_rdma_ch *ch,
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 = kmalloc(private_data_len * 3 + 1, GFP_KERNEL);
+ int i;
+
+ if (priv) {
+ priv[0] = '\0';
+ 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; private data %s.\n",
+ ch->sess_name, ch->qp->qp_num, reason, priv ? : "(?)");
+ kfree(priv);
srpt_drain_channel(ch);
}
--
2.7.0
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