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RDMA/rxe: Fix coding error in rxe_recv.c

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[ Upstream commit 7d9ae80e31df57dd3253e1ec514f0000aa588a81 ]

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: 8700e3e7c4 ("Soft RoCE driver")
Link: https://lore.kernel.org/r/20210127214500.3707-1-rpearson@hpe.com
Signed-off-by: Bob Pearson <rpearson@hpe.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Bob Pearson 2021-01-27 15:45:01 -06:00 committed by Greg Kroah-Hartman
parent 5132b4f248
commit d464194f6e
1 changed files with 8 additions and 3 deletions
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11
drivers/infiniband/sw/rxe/rxe_recv.c
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@ -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)
{
unsigned 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;
}