This is a note to let you know that I've just added the patch titled
RDMA/bnxt_re: Check cqe flags to know imm_data vs inv_irkey
to the 6.1-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-bnxt_re-check-cqe-flags-to-know-imm_data-vs-inv.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3fafbbecc46fc23f1705cc2b6ed92046b13d536b
Author: Kashyap Desai <kashyap.desai@xxxxxxxxxxxx>
Date: Mon Oct 28 03:06:54 2024 -0700
RDMA/bnxt_re: Check cqe flags to know imm_data vs inv_irkey
[ Upstream commit 808ca6de989c598bc5af1ae0ad971a66077efac0 ]
Invalidate rkey is cpu endian and immediate data is in big endian format.
Both immediate data and invalidate the remote key returned by
HW is in little endian format.
While handling the commit in fixes tag, the difference between
immediate data and invalidate rkey endianness was not considered.
Without changes of this patch, Kernel ULP was failing while processing
inv_rkey.
dmesg log snippet -
nvme nvme0: Bogus remote invalidation for rkey 0x2000019Fix in this patch
Do endianness conversion based on completion queue entry flag.
Also, the HW completions are already converted to host endianness in
bnxt_qplib_cq_process_res_rc and bnxt_qplib_cq_process_res_ud and there
is no need to convert it again in bnxt_re_poll_cq. Modified the union to
hold the correct data type.
Fixes: 95b087f87b78 ("bnxt_re: Fix imm_data endianness")
Signed-off-by: Kashyap Desai <kashyap.desai@xxxxxxxxxxxx>
Signed-off-by: Selvin Xavier <selvin.xavier@xxxxxxxxxxxx>
Link: https://patch.msgid.link/1730110014-20755-1-git-send-email-selvin.xavier@xxxxxxxxxxxx
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
index 4c34cb1cb7866..13102ba93847a 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -3340,7 +3340,7 @@ static void bnxt_re_process_res_shadow_qp_wc(struct bnxt_re_qp *gsi_sqp,
wc->byte_len = orig_cqe->length;
wc->qp = &gsi_qp->ib_qp;
- wc->ex.imm_data = cpu_to_be32(le32_to_cpu(orig_cqe->immdata));
+ wc->ex.imm_data = cpu_to_be32(orig_cqe->immdata);
wc->src_qp = orig_cqe->src_qp;
memcpy(wc->smac, orig_cqe->smac, ETH_ALEN);
if (bnxt_re_is_vlan_pkt(orig_cqe, &vlan_id, &sl)) {
@@ -3476,7 +3476,10 @@ int bnxt_re_poll_cq(struct ib_cq *ib_cq, int num_entries, struct ib_wc *wc)
(unsigned long)(cqe->qp_handle),
struct bnxt_re_qp, qplib_qp);
wc->qp = &qp->ib_qp;
- wc->ex.imm_data = cpu_to_be32(le32_to_cpu(cqe->immdata));
+ if (cqe->flags & CQ_RES_RC_FLAGS_IMM)
+ wc->ex.imm_data = cpu_to_be32(cqe->immdata);
+ else
+ wc->ex.invalidate_rkey = cqe->invrkey;
wc->src_qp = cqe->src_qp;
memcpy(wc->smac, cqe->smac, ETH_ALEN);
wc->port_num = 1;
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.h b/drivers/infiniband/hw/bnxt_re/qplib_fp.h
index 57a3dae87f659..13263ce2309d7 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_fp.h
+++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.h
@@ -374,7 +374,7 @@ struct bnxt_qplib_cqe {
u16 cfa_meta;
u64 wr_id;
union {
- __le32 immdata;
+ u32 immdata;
u32 invrkey;
};
u64 qp_handle;
