This is a note to let you know that I've just added the patch titled
RDMA/hns: Add check for SL
to the 6.5-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-hns-add-check-for-sl.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c436d0b724c08cdc0f28155e08539c7724f5f040
Author: Luoyouming <luoyouming@xxxxxxxxxx>
Date: Tue Oct 17 20:52:36 2023 +0800
RDMA/hns: Add check for SL
[ Upstream commit 5e617c18b1f34ec57ad5dce44f09de603cf6bd6c ]
SL set by users may exceed the capability of devices. So add check
for this situation.
Fixes: fba429fcf9a5 ("RDMA/hns: Fix missing fields in address vector")
Fixes: 70f92521584f ("RDMA/hns: Use the reserved loopback QPs to free MR before destroying MPT")
Fixes: f0cb411aad23 ("RDMA/hns: Use new interface to modify QP context")
Signed-off-by: Luoyouming <luoyouming@xxxxxxxxxx>
Signed-off-by: Junxian Huang <huangjunxian6@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20231017125239.164455-5-huangjunxian6@xxxxxxxxxxxxx
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/hns/hns_roce_ah.c b/drivers/infiniband/hw/hns/hns_roce_ah.c
index e77fcc74f15c4..3df032ddda189 100644
--- a/drivers/infiniband/hw/hns/hns_roce_ah.c
+++ b/drivers/infiniband/hw/hns/hns_roce_ah.c
@@ -33,7 +33,9 @@
#include <linux/pci.h>
#include <rdma/ib_addr.h>
#include <rdma/ib_cache.h>
+#include "hnae3.h"
#include "hns_roce_device.h"
+#include "hns_roce_hw_v2.h"
static inline u16 get_ah_udp_sport(const struct rdma_ah_attr *ah_attr)
{
@@ -57,6 +59,7 @@ int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
struct hns_roce_dev *hr_dev = to_hr_dev(ibah->device);
struct hns_roce_ah *ah = to_hr_ah(ibah);
int ret = 0;
+ u32 max_sl;
if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08 && udata)
return -EOPNOTSUPP;
@@ -70,9 +73,17 @@ int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
ah->av.hop_limit = grh->hop_limit;
ah->av.flowlabel = grh->flow_label;
ah->av.udp_sport = get_ah_udp_sport(ah_attr);
- ah->av.sl = rdma_ah_get_sl(ah_attr);
ah->av.tclass = get_tclass(grh);
+ ah->av.sl = rdma_ah_get_sl(ah_attr);
+ max_sl = min_t(u32, MAX_SERVICE_LEVEL, hr_dev->caps.sl_num - 1);
+ if (unlikely(ah->av.sl > max_sl)) {
+ ibdev_err_ratelimited(&hr_dev->ib_dev,
+ "failed to set sl, sl (%u) shouldn't be larger than %u.\n",
+ ah->av.sl, max_sl);
+ return -EINVAL;
+ }
+
memcpy(ah->av.dgid, grh->dgid.raw, HNS_ROCE_GID_SIZE);
memcpy(ah->av.mac, ah_attr->roce.dmac, ETH_ALEN);
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 75dbc60f45583..1edb344cd0c21 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -4836,22 +4836,32 @@ static int hns_roce_v2_set_path(struct ib_qp *ibqp,
struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
struct ib_device *ibdev = &hr_dev->ib_dev;
const struct ib_gid_attr *gid_attr = NULL;
+ u8 sl = rdma_ah_get_sl(&attr->ah_attr);
int is_roce_protocol;
u16 vlan_id = 0xffff;
bool is_udp = false;
+ u32 max_sl;
u8 ib_port;
u8 hr_port;
int ret;
+ max_sl = min_t(u32, MAX_SERVICE_LEVEL, hr_dev->caps.sl_num - 1);
+ if (unlikely(sl > max_sl)) {
+ ibdev_err_ratelimited(ibdev,
+ "failed to fill QPC, sl (%u) shouldn't be larger than %u.\n",
+ sl, max_sl);
+ return -EINVAL;
+ }
+
/*
* If free_mr_en of qp is set, it means that this qp comes from
* free mr. This qp will perform the loopback operation.
* In the loopback scenario, only sl needs to be set.
*/
if (hr_qp->free_mr_en) {
- hr_reg_write(context, QPC_SL, rdma_ah_get_sl(&attr->ah_attr));
+ hr_reg_write(context, QPC_SL, sl);
hr_reg_clear(qpc_mask, QPC_SL);
- hr_qp->sl = rdma_ah_get_sl(&attr->ah_attr);
+ hr_qp->sl = sl;
return 0;
}
@@ -4918,14 +4928,7 @@ static int hns_roce_v2_set_path(struct ib_qp *ibqp,
memcpy(context->dgid, grh->dgid.raw, sizeof(grh->dgid.raw));
memset(qpc_mask->dgid, 0, sizeof(grh->dgid.raw));
- hr_qp->sl = rdma_ah_get_sl(&attr->ah_attr);
- if (unlikely(hr_qp->sl > MAX_SERVICE_LEVEL)) {
- ibdev_err(ibdev,
- "failed to fill QPC, sl (%u) shouldn't be larger than %d.\n",
- hr_qp->sl, MAX_SERVICE_LEVEL);
- return -EINVAL;
- }
-
+ hr_qp->sl = sl;
hr_reg_write(context, QPC_SL, hr_qp->sl);
hr_reg_clear(qpc_mask, QPC_SL);
