This is a note to let you know that I've just added the patch titled
RDMA/hns: Avoid filling sgid index when modifying QP to RTR
to the 5.11-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-avoid-filling-sgid-index-when-modifying-qp-.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c65767294c5d8001e307a73679560e3d77437611
Author: Weihang Li <liweihang@xxxxxxxxxx>
Date: Fri Feb 5 17:39:23 2021 +0800
RDMA/hns: Avoid filling sgid index when modifying QP to RTR
[ Upstream commit 773f841ab1aeb0134e3872eb3545592732db8218 ]
ULP usually set IB(V)_QP_AV when trying to modify QP to RTR if they want
to record sgid index into QPC. For UD QPs, it is useless because it will
be included in WQE. For RC QPs, it will be filled in
hns_roce_set_path(). So sgid index shouldn't be filled by default. Then
hns_get_gid_index() is moved to hns_roce_hw_v1.c because it is only called
in it.
Fixes: 926a01dc000d ("RDMA/hns: Add QP operations support for hip08 SoC")
Link: https://lore.kernel.org/r/1612517974-31867-2-git-send-email-liweihang@xxxxxxxxxx
Signed-off-by: Weihang Li <liweihang@xxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
index f68585ff8e8a5..c2539a8d91116 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
@@ -43,6 +43,22 @@
#include "hns_roce_hem.h"
#include "hns_roce_hw_v1.h"
+/**
+ * hns_get_gid_index - Get gid index.
+ * @hr_dev: pointer to structure hns_roce_dev.
+ * @port: port, value range: 0 ~ MAX
+ * @gid_index: gid_index, value range: 0 ~ MAX
+ * Description:
+ * N ports shared gids, allocation method as follow:
+ * GID[0][0], GID[1][0],.....GID[N - 1][0],
+ * GID[0][0], GID[1][0],.....GID[N - 1][0],
+ * And so on
+ */
+u8 hns_get_gid_index(struct hns_roce_dev *hr_dev, u8 port, int gid_index)
+{
+ return gid_index * hr_dev->caps.num_ports + port;
+}
+
static void set_data_seg(struct hns_roce_wqe_data_seg *dseg, struct ib_sge *sg)
{
dseg->lkey = cpu_to_le32(sg->lkey);
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index a909993552e7f..b8f6d5f706ddc 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -4254,7 +4254,6 @@ static int modify_qp_init_to_rtr(struct ib_qp *ibqp,
struct hns_roce_v2_qp_context *context,
struct hns_roce_v2_qp_context *qpc_mask)
{
- const struct ib_global_route *grh = rdma_ah_read_grh(&attr->ah_attr);
struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
struct ib_device *ibdev = &hr_dev->ib_dev;
@@ -4262,7 +4261,6 @@ static int modify_qp_init_to_rtr(struct ib_qp *ibqp,
dma_addr_t irrl_ba;
enum ib_mtu mtu;
u8 lp_pktn_ini;
- u8 port_num;
u64 *mtts;
u8 *dmac;
u8 *smac;
@@ -4343,15 +4341,6 @@ static int modify_qp_init_to_rtr(struct ib_qp *ibqp,
V2_QPC_BYTE_56_DQPN_M, V2_QPC_BYTE_56_DQPN_S, 0);
}
- /* Configure GID index */
- port_num = rdma_ah_get_port_num(&attr->ah_attr);
- roce_set_field(context->byte_20_smac_sgid_idx,
- V2_QPC_BYTE_20_SGID_IDX_M, V2_QPC_BYTE_20_SGID_IDX_S,
- hns_get_gid_index(hr_dev, port_num - 1,
- grh->sgid_index));
- roce_set_field(qpc_mask->byte_20_smac_sgid_idx,
- V2_QPC_BYTE_20_SGID_IDX_M, V2_QPC_BYTE_20_SGID_IDX_S, 0);
-
memcpy(&(context->dmac), dmac, sizeof(u32));
roce_set_field(context->byte_52_udpspn_dmac, V2_QPC_BYTE_52_DMAC_M,
V2_QPC_BYTE_52_DMAC_S, *((u16 *)(&dmac[4])));
diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index 60822e666f351..baadb12b13752 100644
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -42,22 +42,6 @@
#include "hns_roce_device.h"
#include "hns_roce_hem.h"
-/**
- * hns_get_gid_index - Get gid index.
- * @hr_dev: pointer to structure hns_roce_dev.
- * @port: port, value range: 0 ~ MAX
- * @gid_index: gid_index, value range: 0 ~ MAX
- * Description:
- * N ports shared gids, allocation method as follow:
- * GID[0][0], GID[1][0],.....GID[N - 1][0],
- * GID[0][0], GID[1][0],.....GID[N - 1][0],
- * And so on
- */
-u8 hns_get_gid_index(struct hns_roce_dev *hr_dev, u8 port, int gid_index)
-{
- return gid_index * hr_dev->caps.num_ports + port;
-}
-
static int hns_roce_set_mac(struct hns_roce_dev *hr_dev, u8 port, u8 *addr)
{
u8 phy_port;
