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net/mlx5e: Take HW interrupt trigger into a function 

mlx5e_trigger_irq posts a NOP to the ICO SQ just to trigger an IRQ and
enter the NAPI poll on the right CPU according to the affinity. Use it
in mlx5e_activate_rq.

Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Maxim Mikityanskiy 2019-03-01 12:05:21 +02:00 committed by Saeed Mahameed
parent 10961c5606
commit 63d26b490b
3 changed files with 13 additions and 9 deletions
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1
drivers/net/ethernet/mellanox/mlx5/core/en.h
View File

@ -778,6 +778,7 @@ netdev_tx_t mlx5e_xmit(struct sk_buff *skb, struct net_device *dev);
netdev_tx_t mlx5e_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb,
struct mlx5e_tx_wqe *wqe, u16 pi, bool xmit_more);
void mlx5e_trigger_irq(struct mlx5e_icosq *sq);
void mlx5e_completion_event(struct mlx5_core_cq *mcq);
void mlx5e_cq_error_event(struct mlx5_core_cq *mcq, enum mlx5_event event);
int mlx5e_napi_poll(struct napi_struct *napi, int budget);

10
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -877,16 +877,8 @@ static int mlx5e_open_rq(struct mlx5e_channel *c,
static void mlx5e_activate_rq(struct mlx5e_rq *rq)
{
struct mlx5e_icosq *sq = &rq->channel->icosq;
struct mlx5_wq_cyc *wq = &sq->wq;
struct mlx5e_tx_wqe *nopwqe;
u16 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
set_bit(MLX5E_RQ_STATE_ENABLED, &rq->state);
sq->db.ico_wqe[pi].opcode = MLX5_OPCODE_NOP;
nopwqe = mlx5e_post_nop(wq, sq->sqn, &sq->pc);
mlx5e_notify_hw(wq, sq->pc, sq->uar_map, &nopwqe->ctrl);
mlx5e_trigger_irq(&rq->channel->icosq);
}
static void mlx5e_deactivate_rq(struct mlx5e_rq *rq)

11
drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
View File

@ -71,6 +71,17 @@ static void mlx5e_handle_rx_dim(struct mlx5e_rq *rq)
net_dim(&rq->dim, dim_sample);
}
void mlx5e_trigger_irq(struct mlx5e_icosq *sq)
{
struct mlx5_wq_cyc *wq = &sq->wq;
struct mlx5e_tx_wqe *nopwqe;
u16 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
sq->db.ico_wqe[pi].opcode = MLX5_OPCODE_NOP;
nopwqe = mlx5e_post_nop(wq, sq->sqn, &sq->pc);
mlx5e_notify_hw(wq, sq->pc, sq->uar_map, &nopwqe->ctrl);
}
int mlx5e_napi_poll(struct napi_struct *napi, int budget)
{
struct mlx5e_channel *c = container_of(napi, struct mlx5e_channel,