From: Bob Pearson <rpearsonhpe@gmail.com>
To: jgg@nvidia.com, zyjzyj2000@gmail.com, linux-rdma@vger.kernel.org
Cc: Bob Pearson <rpearson@hpe.com>
Subject: [PATCH for-next] RDMA/rxe: Fix coding error in rxe_recv.c
Date: Wed, 27 Jan 2021 15:45:01 -0600 [thread overview]
Message-ID: <20210127214500.3707-1-rpearson@hpe.com> (raw)
check_type_state() in rxe_recv.c is written as if the type bits in
the packet opcode were a bit mask which is not correct. This patch
corrects this code to compare all 3 type bits to the required type.
Fixes: 8700e3e7c485 ("Soft RoCE driver")
Signed-off-by: Bob Pearson <rpearson@hpe.com>
---
drivers/infiniband/sw/rxe/rxe_recv.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/infiniband/sw/rxe/rxe_recv.c b/drivers/infiniband/sw/rxe/rxe_recv.c
index c9984a28eecc..0c9b857194fe 100644
--- a/drivers/infiniband/sw/rxe/rxe_recv.c
+++ b/drivers/infiniband/sw/rxe/rxe_recv.c
@@ -9,21 +9,26 @@
#include "rxe.h"
#include "rxe_loc.h"
+/* check that QP matches packet opcode type and is in a valid state */
static int check_type_state(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
struct rxe_qp *qp)
{
+ int pkt_type;
+
if (unlikely(!qp->valid))
goto err1;
+ pkt_type = pkt->opcode & 0xe0;
+
switch (qp_type(qp)) {
case IB_QPT_RC:
- if (unlikely((pkt->opcode & IB_OPCODE_RC) != 0)) {
+ if (unlikely(pkt_type != IB_OPCODE_RC)) {
pr_warn_ratelimited("bad qp type\n");
goto err1;
}
break;
case IB_QPT_UC:
- if (unlikely(!(pkt->opcode & IB_OPCODE_UC))) {
+ if (unlikely(pkt_type != IB_OPCODE_UC)) {
pr_warn_ratelimited("bad qp type\n");
goto err1;
}
@@ -31,7 +36,7 @@ static int check_type_state(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
case IB_QPT_UD:
case IB_QPT_SMI:
case IB_QPT_GSI:
- if (unlikely(!(pkt->opcode & IB_OPCODE_UD))) {
+ if (unlikely(pkt_type != IB_OPCODE_UD)) {
pr_warn_ratelimited("bad qp type\n");
goto err1;
}
--
2.27.0
next reply other threads:[~2021-01-27 21:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-27 21:45 Bob Pearson [this message]
2021-02-05 17:57 ` [PATCH for-next] RDMA/rxe: Fix coding error in rxe_recv.c Jason Gunthorpe
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