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Message-Id: <000236f0a9487d48809f87bcc3620a3964b2d3d3.1673960981.git.leon@kernel.org>
Date: Tue, 17 Jan 2023 15:14:52 +0200
From: Leon Romanovsky <leon@...nel.org>
To: Jason Gunthorpe <jgg@...dia.com>
Cc: Or Har-Toov <ohartoov@...dia.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, linux-rdma@...r.kernel.org,
Michael Guralnik <michaelgur@...dia.com>,
netdev@...r.kernel.org, Paolo Abeni <pabeni@...hat.com>,
Saeed Mahameed <saeedm@...dia.com>
Subject: [PATCH rdma-next v2 4/4] RDMA/mlx5: Use query_special_contexts for mkeys
From: Or Har-Toov <ohartoov@...dia.com>
Use query_sepcial_contexts to get the correct value of mkeys such as
null_mkey, terminate_scatter_list_mkey and dump_fill_mkey, as FW will
change them in certain configurations.
Signed-off-by: Or Har-Toov <ohartoov@...dia.com>
Reviewed-by: Michael Guralnik <michaelgur@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
drivers/infiniband/hw/mlx5/cmd.c | 45 ++++++++++++++++------------
drivers/infiniband/hw/mlx5/cmd.h | 3 +-
drivers/infiniband/hw/mlx5/main.c | 10 +++----
drivers/infiniband/hw/mlx5/mlx5_ib.h | 9 +++++-
drivers/infiniband/hw/mlx5/odp.c | 21 ++++---------
drivers/infiniband/hw/mlx5/srq.c | 2 +-
drivers/infiniband/hw/mlx5/wr.c | 2 +-
7 files changed, 48 insertions(+), 44 deletions(-)
diff --git a/drivers/infiniband/hw/mlx5/cmd.c b/drivers/infiniband/hw/mlx5/cmd.c
index ff3742b0460a..1d0c8d5e745b 100644
--- a/drivers/infiniband/hw/mlx5/cmd.c
+++ b/drivers/infiniband/hw/mlx5/cmd.c
@@ -5,34 +5,41 @@
#include "cmd.h"
-int mlx5_cmd_dump_fill_mkey(struct mlx5_core_dev *dev, u32 *mkey)
+int mlx5r_cmd_query_special_mkeys(struct mlx5_ib_dev *dev)
{
u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {};
u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)] = {};
+ bool is_terminate, is_dump, is_null;
int err;
- MLX5_SET(query_special_contexts_in, in, opcode,
- MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
- err = mlx5_cmd_exec_inout(dev, query_special_contexts, in, out);
- if (!err)
- *mkey = MLX5_GET(query_special_contexts_out, out,
- dump_fill_mkey);
- return err;
-}
+ is_terminate = MLX5_CAP_GEN(dev->mdev, terminate_scatter_list_mkey);
+ is_dump = MLX5_CAP_GEN(dev->mdev, dump_fill_mkey);
+ is_null = MLX5_CAP_GEN(dev->mdev, null_mkey);
-int mlx5_cmd_null_mkey(struct mlx5_core_dev *dev, u32 *null_mkey)
-{
- u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {};
- u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)] = {};
- int err;
+ dev->mkeys.terminate_scatter_list_mkey = MLX5_TERMINATE_SCATTER_LIST_LKEY;
+ if (!is_terminate && !is_dump && !is_null)
+ return 0;
MLX5_SET(query_special_contexts_in, in, opcode,
MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
- err = mlx5_cmd_exec_inout(dev, query_special_contexts, in, out);
- if (!err)
- *null_mkey = MLX5_GET(query_special_contexts_out, out,
- null_mkey);
- return err;
+ err = mlx5_cmd_exec_inout(dev->mdev, query_special_contexts, in, out);
+ if (err)
+ return err;
+
+ if (is_dump)
+ dev->mkeys.dump_fill_mkey = MLX5_GET(query_special_contexts_out,
+ out, dump_fill_mkey);
+
+ if (is_null)
+ dev->mkeys.null_mkey = cpu_to_be32(
+ MLX5_GET(query_special_contexts_out, out, null_mkey));
+
+ if (is_terminate)
+ dev->mkeys.terminate_scatter_list_mkey =
+ cpu_to_be32(MLX5_GET(query_special_contexts_out, out,
+ terminate_scatter_list_mkey));
+
+ return 0;
}
int mlx5_cmd_query_cong_params(struct mlx5_core_dev *dev, int cong_point,
diff --git a/drivers/infiniband/hw/mlx5/cmd.h b/drivers/infiniband/hw/mlx5/cmd.h
index ee46638db5de..93a971a40d11 100644
--- a/drivers/infiniband/hw/mlx5/cmd.h
+++ b/drivers/infiniband/hw/mlx5/cmd.h
@@ -37,8 +37,7 @@
#include <linux/kernel.h>
#include <linux/mlx5/driver.h>
-int mlx5_cmd_dump_fill_mkey(struct mlx5_core_dev *dev, u32 *mkey);
-int mlx5_cmd_null_mkey(struct mlx5_core_dev *dev, u32 *null_mkey);
+int mlx5r_cmd_query_special_mkeys(struct mlx5_ib_dev *dev);
int mlx5_cmd_query_cong_params(struct mlx5_core_dev *dev, int cong_point,
void *out);
int mlx5_cmd_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn, u16 uid);
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 8588f2fc0cba..fb0d97bd4074 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -1756,13 +1756,9 @@ static int set_ucontext_resp(struct ib_ucontext *uctx,
struct mlx5_ib_dev *dev = to_mdev(ibdev);
struct mlx5_ib_ucontext *context = to_mucontext(uctx);
struct mlx5_bfreg_info *bfregi = &context->bfregi;
- int err;
if (MLX5_CAP_GEN(dev->mdev, dump_fill_mkey)) {
- err = mlx5_cmd_dump_fill_mkey(dev->mdev,
- &resp->dump_fill_mkey);
- if (err)
- return err;
+ resp->dump_fill_mkey = dev->mkeys.dump_fill_mkey;
resp->comp_mask |=
MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_DUMP_FILL_MKEY;
}
@@ -3634,6 +3630,10 @@ static int mlx5_ib_stage_init_init(struct mlx5_ib_dev *dev)
dev->port[i].roce.last_port_state = IB_PORT_DOWN;
}
+ err = mlx5r_cmd_query_special_mkeys(dev);
+ if (err)
+ return err;
+
err = mlx5_ib_init_multiport_master(dev);
if (err)
return err;
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 7e1fb71bf7d4..ddb36c757074 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -1051,6 +1051,13 @@ struct mlx5_port_caps {
u8 ext_port_cap;
};
+
+struct mlx5_special_mkeys {
+ u32 dump_fill_mkey;
+ __be32 null_mkey;
+ __be32 terminate_scatter_list_mkey;
+};
+
struct mlx5_ib_dev {
struct ib_device ib_dev;
struct mlx5_core_dev *mdev;
@@ -1081,7 +1088,6 @@ struct mlx5_ib_dev {
struct xarray odp_mkeys;
- u32 null_mkey;
struct mlx5_ib_flow_db *flow_db;
/* protect resources needed as part of reset flow */
spinlock_t reset_flow_resource_lock;
@@ -1110,6 +1116,7 @@ struct mlx5_ib_dev {
struct mlx5_port_caps port_caps[MLX5_MAX_PORTS];
u16 pkey_table_len;
u8 lag_ports;
+ struct mlx5_special_mkeys mkeys;
};
static inline struct mlx5_ib_cq *to_mibcq(struct mlx5_core_cq *mcq)
diff --git a/drivers/infiniband/hw/mlx5/odp.c b/drivers/infiniband/hw/mlx5/odp.c
index b4ebeadce67c..4998eaeadcbb 100644
--- a/drivers/infiniband/hw/mlx5/odp.c
+++ b/drivers/infiniband/hw/mlx5/odp.c
@@ -104,7 +104,7 @@ static void populate_klm(struct mlx5_klm *pklm, size_t idx, size_t nentries,
if (flags & MLX5_IB_UPD_XLT_ZAP) {
for (; pklm != end; pklm++, idx++) {
pklm->bcount = cpu_to_be32(MLX5_IMR_MTT_SIZE);
- pklm->key = cpu_to_be32(mr_to_mdev(imr)->null_mkey);
+ pklm->key = mr_to_mdev(imr)->mkeys.null_mkey;
pklm->va = 0;
}
return;
@@ -137,7 +137,7 @@ static void populate_klm(struct mlx5_klm *pklm, size_t idx, size_t nentries,
pklm->key = cpu_to_be32(mtt->ibmr.lkey);
pklm->va = cpu_to_be64(idx * MLX5_IMR_MTT_SIZE);
} else {
- pklm->key = cpu_to_be32(mr_to_mdev(imr)->null_mkey);
+ pklm->key = mr_to_mdev(imr)->mkeys.null_mkey;
pklm->va = 0;
}
}
@@ -1015,7 +1015,8 @@ static int pagefault_data_segments(struct mlx5_ib_dev *dev,
/* receive WQE end of sg list. */
if (receive_queue && bcnt == 0 &&
- key == MLX5_TERMINATE_SCATTER_LIST_LKEY && io_virt == 0)
+ key == dev->mkeys.terminate_scatter_list_mkey &&
+ io_virt == 0)
break;
if (!inline_segment && total_wqe_bytes) {
@@ -1615,25 +1616,15 @@ static const struct ib_device_ops mlx5_ib_dev_odp_ops = {
int mlx5_ib_odp_init_one(struct mlx5_ib_dev *dev)
{
- int ret = 0;
-
internal_fill_odp_caps(dev);
if (!(dev->odp_caps.general_caps & IB_ODP_SUPPORT))
- return ret;
+ return 0;
ib_set_device_ops(&dev->ib_dev, &mlx5_ib_dev_odp_ops);
- if (dev->odp_caps.general_caps & IB_ODP_SUPPORT_IMPLICIT) {
- ret = mlx5_cmd_null_mkey(dev->mdev, &dev->null_mkey);
- if (ret) {
- mlx5_ib_err(dev, "Error getting null_mkey %d\n", ret);
- return ret;
- }
- }
-
mutex_init(&dev->odp_eq_mutex);
- return ret;
+ return 0;
}
void mlx5_ib_odp_cleanup_one(struct mlx5_ib_dev *dev)
diff --git a/drivers/infiniband/hw/mlx5/srq.c b/drivers/infiniband/hw/mlx5/srq.c
index bcceb14a07f9..32c6643d0f7a 100644
--- a/drivers/infiniband/hw/mlx5/srq.c
+++ b/drivers/infiniband/hw/mlx5/srq.c
@@ -447,7 +447,7 @@ int mlx5_ib_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr,
if (i < srq->msrq.max_avail_gather) {
scat[i].byte_count = 0;
- scat[i].lkey = MLX5_TERMINATE_SCATTER_LIST_LKEY;
+ scat[i].lkey = dev->mkeys.terminate_scatter_list_mkey;
scat[i].addr = 0;
}
}
diff --git a/drivers/infiniband/hw/mlx5/wr.c b/drivers/infiniband/hw/mlx5/wr.c
index bc44551493e2..df1d1b0a3ef7 100644
--- a/drivers/infiniband/hw/mlx5/wr.c
+++ b/drivers/infiniband/hw/mlx5/wr.c
@@ -1252,7 +1252,7 @@ int mlx5_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
if (i < qp->rq.max_gs) {
scat[i].byte_count = 0;
- scat[i].lkey = MLX5_TERMINATE_SCATTER_LIST_LKEY;
+ scat[i].lkey = dev->mkeys.terminate_scatter_list_mkey;
scat[i].addr = 0;
}
--
2.39.0
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