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IB/mlx5: Create GSI transmission QPs when P_Key table is changed

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Whenever the P_Key table is changed, we create the required GSI
transmission QPs on-demand.

Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Haggai Eran <haggaie@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Haggai Eran 2016-02-29 15:45:07 +02:00 committed by Doug Ledford
parent ebab41cff4
commit 7722f47e71
3 changed files with 41 additions and 0 deletions
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10
drivers/infiniband/hw/mlx5/gsi.c
View File

@ -341,3 +341,13 @@ int mlx5_ib_gsi_post_recv(struct ib_qp *qp, struct ib_recv_wr *wr,
return ib_post_recv(gsi->rx_qp, wr, bad_wr);
}
void mlx5_ib_gsi_pkey_change(struct mlx5_ib_gsi_qp *gsi)
{
if (!gsi)
return;
mutex_lock(&gsi->mutex);
setup_qps(gsi);
mutex_unlock(&gsi->mutex);
}

28
drivers/infiniband/hw/mlx5/main.c
View File

@ -1721,6 +1721,17 @@ static struct device_attribute *mlx5_class_attributes[] = {
&dev_attr_reg_pages,
};
static void pkey_change_handler(struct work_struct *work)
{
struct mlx5_ib_port_resources *ports =
container_of(work, struct mlx5_ib_port_resources,
pkey_change_work);
mutex_lock(&ports->devr->mutex);
mlx5_ib_gsi_pkey_change(ports->gsi);
mutex_unlock(&ports->devr->mutex);
}
static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context,
enum mlx5_dev_event event, unsigned long param)
{
@ -1757,6 +1768,8 @@ static void mlx5_ib_event(struct mlx5_core_dev *dev, void *context,
case MLX5_DEV_EVENT_PKEY_CHANGE:
ibev.event = IB_EVENT_PKEY_CHANGE;
port = (u8)param;
schedule_work(&ibdev->devr.ports[port - 1].pkey_change_work);
break;
case MLX5_DEV_EVENT_GUID_CHANGE:
@ -1966,6 +1979,7 @@ static int create_dev_resources(struct mlx5_ib_resources *devr)
struct ib_srq_init_attr attr;
struct mlx5_ib_dev *dev;
struct ib_cq_init_attr cq_attr = {.cqe = 1};
int port;
int ret = 0;
dev = container_of(devr, struct mlx5_ib_dev, devr);
@ -2059,6 +2073,12 @@ static int create_dev_resources(struct mlx5_ib_resources *devr)
atomic_inc(&devr->p0->usecnt);
atomic_set(&devr->s0->usecnt, 0);
for (port = 0; port < ARRAY_SIZE(devr->ports); ++port) {
INIT_WORK(&devr->ports[port].pkey_change_work,
pkey_change_handler);
devr->ports[port].devr = devr;
}
return 0;
error5:
@ -2077,12 +2097,20 @@ error0:
static void destroy_dev_resources(struct mlx5_ib_resources *devr)
{
struct mlx5_ib_dev *dev =
container_of(devr, struct mlx5_ib_dev, devr);
int port;
mlx5_ib_destroy_srq(devr->s1);
mlx5_ib_destroy_srq(devr->s0);
mlx5_ib_dealloc_xrcd(devr->x0);
mlx5_ib_dealloc_xrcd(devr->x1);
mlx5_ib_destroy_cq(devr->c0);
mlx5_ib_dealloc_pd(devr->p0);
/* Make sure no change P_Key work items are still executing */
for (port = 0; port < dev->num_ports; ++port)
cancel_work_sync(&devr->ports[port].pkey_change_work);
}
static u32 get_core_cap_flags(struct ib_device *ibdev)

3
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -510,7 +510,9 @@ struct mlx5_mr_cache {
struct mlx5_ib_gsi_qp;
struct mlx5_ib_port_resources {
struct mlx5_ib_resources *devr;
struct mlx5_ib_gsi_qp *gsi;
struct work_struct pkey_change_work;
};
struct mlx5_ib_resources {
@ -781,6 +783,7 @@ int mlx5_ib_gsi_post_send(struct ib_qp *qp, struct ib_send_wr *wr,
struct ib_send_wr **bad_wr);
int mlx5_ib_gsi_post_recv(struct ib_qp *qp, struct ib_recv_wr *wr,
struct ib_recv_wr **bad_wr);
void mlx5_ib_gsi_pkey_change(struct mlx5_ib_gsi_qp *gsi);
static inline void init_query_mad(struct ib_smp *mad)
{