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mlx5: Fix incorrect wc pkey_index assignment for GSI messages

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Since patch series "Demux IB CM requests in the rdma_cm module" the
P_Key index is taken from the work completion rather than the message
itself.

The HCA provides us with the message P_Key. In order to provide the
P_Key index, we need to look it up. Given that this is relevant only
for GSI messages (session establishments) which is less performance critical,
micro-optimize against the GSI (is_qp1) branch.

Fixes: 4c21b5bcef ("IB/cma: Add net_dev and private data checks to
RDMA CM")
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Sagi Grimberg 2015-09-02 22:23:04 +03:00 committed by Doug Ledford
parent 11d748045c
commit b636401f0e
3 changed files with 14 additions and 6 deletions
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10
drivers/infiniband/hw/mlx5/cq.c
View File

@ -33,6 +33,7 @@
#include <linux/kref.h>
#include <rdma/ib_umem.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_cache.h>
#include "mlx5_ib.h"
#include "user.h"
@ -227,7 +228,14 @@ static void handle_responder(struct ib_wc *wc, struct mlx5_cqe64 *cqe,
wc->dlid_path_bits = cqe->ml_path;
g = (be32_to_cpu(cqe->flags_rqpn) >> 28) & 3;
wc->wc_flags |= g ? IB_WC_GRH : 0;
wc->pkey_index = be32_to_cpu(cqe->imm_inval_pkey) & 0xffff;
if (unlikely(is_qp1(qp->ibqp.qp_type))) {
u16 pkey = be32_to_cpu(cqe->imm_inval_pkey) & 0xffff;
ib_find_cached_pkey(&dev->ib_dev, qp->port, pkey,
&wc->pkey_index);
} else {
wc->pkey_index = 0;
}
}
static void dump_cqe(struct mlx5_ib_dev *dev, struct mlx5_err_cqe *cqe)

5
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -680,6 +680,11 @@ static inline u8 convert_access(int acc)
MLX5_PERM_LOCAL_READ;
}
static inline int is_qp1(enum ib_qp_type qp_type)
{
return qp_type == IB_QPT_GSI;
}
#define MLX5_MAX_UMR_SHIFT 16
#define MLX5_MAX_UMR_PAGES (1 << MLX5_MAX_UMR_SHIFT)

5
drivers/infiniband/hw/mlx5/qp.c
View File

@ -76,11 +76,6 @@ static int is_qp0(enum ib_qp_type qp_type)
return qp_type == IB_QPT_SMI;
}
static int is_qp1(enum ib_qp_type qp_type)
{
return qp_type == IB_QPT_GSI;
}
static int is_sqp(enum ib_qp_type qp_type)
{
return is_qp0(qp_type) || is_qp1(qp_type);