This is a note to let you know that I've just added the patch titled
RDMA/cxgb4: add missing qpid increment
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rdma-cxgb4-add-missing-qpid-increment.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit fd60139a654720c4a74b6c7f6793f675e403ca61
Author: Potnuri Bharat Teja <bharat@xxxxxxxxxxx>
Date: Thu Apr 15 20:44:22 2021 +0530
RDMA/cxgb4: add missing qpid increment
[ Upstream commit 3a6684385928d00b29acac7658a5ae1f2a44494c ]
missing qpid increment leads to skipping few qpids while allocating QP.
This eventually leads to adapter running out of qpids after establishing
fewer connections than it actually supports.
Current patch increments the qpid correctly.
Fixes: cfdda9d76436 ("RDMA/cxgb4: Add driver for Chelsio T4 RNIC")
Link: https://lore.kernel.org/r/20210415151422.9139-1-bharat@xxxxxxxxxxx
Signed-off-by: Potnuri Bharat Teja <bharat@xxxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/cxgb4/resource.c b/drivers/infiniband/hw/cxgb4/resource.c
index 5c95c789f302..e800e8e8bed5 100644
--- a/drivers/infiniband/hw/cxgb4/resource.c
+++ b/drivers/infiniband/hw/cxgb4/resource.c
@@ -216,7 +216,7 @@ u32 c4iw_get_qpid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx)
goto out;
entry->qid = qid;
list_add_tail(&entry->entry, &uctx->cqids);
- for (i = qid; i & rdev->qpmask; i++) {
+ for (i = qid + 1; i & rdev->qpmask; i++) {
entry = kmalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
goto out;
