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Message-ID: <20201203042108.232706-6-saeedm@nvidia.com>
Date: Wed, 2 Dec 2020 20:20:58 -0800
From: Saeed Mahameed <saeedm@...dia.com>
To: Jakub Kicinski <kuba@...nel.org>
CC: "David S. Miller" <davem@...emloft.net>, <netdev@...r.kernel.org>,
"Eran Ben Elisha" <eranbe@...dia.com>,
Tariq Toukan <tariqt@...dia.com>,
"Saeed Mahameed" <saeedm@...dia.com>
Subject: [net-next V2 05/15] net/mlx5e: Change skb fifo push/pop API to be used without SQ
From: Eran Ben Elisha <eranbe@...dia.com>
The skb fifo push/pop API used pre-defined attributes within the
mlx5e_txqsq.
In order to share the skb fifo API with other non-SQ use cases,
change the API input to get newly defined mlx5e_skb_fifo struct.
Signed-off-by: Eran Ben Elisha <eranbe@...dia.com>
Reviewed-by: Tariq Toukan <tariqt@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en.h | 10 ++++++++--
drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h | 15 +++++++++------
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 13 ++++++++-----
drivers/net/ethernet/mellanox/mlx5/core/en_tx.c | 6 +++---
4 files changed, 28 insertions(+), 16 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index c014e8ff66aa..7f3bd3d406b3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -331,6 +331,13 @@ struct mlx5e_tx_mpwqe {
u8 inline_on;
};
+struct mlx5e_skb_fifo {
+ struct sk_buff **fifo;
+ u16 *pc;
+ u16 *cc;
+ u16 mask;
+};
+
struct mlx5e_txqsq {
/* data path */
@@ -351,11 +358,10 @@ struct mlx5e_txqsq {
/* read only */
struct mlx5_wq_cyc wq;
u32 dma_fifo_mask;
- u16 skb_fifo_mask;
struct mlx5e_sq_stats *stats;
struct {
struct mlx5e_sq_dma *dma_fifo;
- struct sk_buff **skb_fifo;
+ struct mlx5e_skb_fifo skb_fifo;
struct mlx5e_tx_wqe_info *wqe_info;
} db;
void __iomem *uar_map;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
index ac47efaaebd5..115ab19ffab1 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h
@@ -250,21 +250,24 @@ mlx5e_dma_push(struct mlx5e_txqsq *sq, dma_addr_t addr, u32 size,
dma->type = map_type;
}
-static inline struct sk_buff **mlx5e_skb_fifo_get(struct mlx5e_txqsq *sq, u16 i)
+static inline
+struct sk_buff **mlx5e_skb_fifo_get(struct mlx5e_skb_fifo *fifo, u16 i)
{
- return &sq->db.skb_fifo[i & sq->skb_fifo_mask];
+ return &fifo->fifo[i & fifo->mask];
}
-static inline void mlx5e_skb_fifo_push(struct mlx5e_txqsq *sq, struct sk_buff *skb)
+static inline
+void mlx5e_skb_fifo_push(struct mlx5e_skb_fifo *fifo, struct sk_buff *skb)
{
- struct sk_buff **skb_item = mlx5e_skb_fifo_get(sq, sq->skb_fifo_pc++);
+ struct sk_buff **skb_item = mlx5e_skb_fifo_get(fifo, (*fifo->pc)++);
*skb_item = skb;
}
-static inline struct sk_buff *mlx5e_skb_fifo_pop(struct mlx5e_txqsq *sq)
+static inline
+struct sk_buff *mlx5e_skb_fifo_pop(struct mlx5e_skb_fifo *fifo)
{
- return *mlx5e_skb_fifo_get(sq, sq->skb_fifo_cc++);
+ return *mlx5e_skb_fifo_get(fifo, (*fifo->cc)++);
}
static inline void
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 38506b8b6f82..3ea15d62acd9 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -1086,7 +1086,7 @@ static void mlx5e_free_icosq(struct mlx5e_icosq *sq)
static void mlx5e_free_txqsq_db(struct mlx5e_txqsq *sq)
{
kvfree(sq->db.wqe_info);
- kvfree(sq->db.skb_fifo);
+ kvfree(sq->db.skb_fifo.fifo);
kvfree(sq->db.dma_fifo);
}
@@ -1098,19 +1098,22 @@ static int mlx5e_alloc_txqsq_db(struct mlx5e_txqsq *sq, int numa)
sq->db.dma_fifo = kvzalloc_node(array_size(df_sz,
sizeof(*sq->db.dma_fifo)),
GFP_KERNEL, numa);
- sq->db.skb_fifo = kvzalloc_node(array_size(df_sz,
- sizeof(*sq->db.skb_fifo)),
+ sq->db.skb_fifo.fifo = kvzalloc_node(array_size(df_sz,
+ sizeof(*sq->db.skb_fifo.fifo)),
GFP_KERNEL, numa);
sq->db.wqe_info = kvzalloc_node(array_size(wq_sz,
sizeof(*sq->db.wqe_info)),
GFP_KERNEL, numa);
- if (!sq->db.dma_fifo || !sq->db.skb_fifo || !sq->db.wqe_info) {
+ if (!sq->db.dma_fifo || !sq->db.skb_fifo.fifo || !sq->db.wqe_info) {
mlx5e_free_txqsq_db(sq);
return -ENOMEM;
}
sq->dma_fifo_mask = df_sz - 1;
- sq->skb_fifo_mask = df_sz - 1;
+
+ sq->db.skb_fifo.pc = &sq->skb_fifo_pc;
+ sq->db.skb_fifo.cc = &sq->skb_fifo_cc;
+ sq->db.skb_fifo.mask = df_sz - 1;
return 0;
}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
index 14af7488cc4f..c6b20b77a0f2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
@@ -572,7 +572,7 @@ mlx5e_sq_xmit_mpwqe(struct mlx5e_txqsq *sq, struct sk_buff *skb,
goto err_unmap;
mlx5e_dma_push(sq, txd.dma_addr, txd.len, MLX5E_DMA_MAP_SINGLE);
- mlx5e_skb_fifo_push(sq, skb);
+ mlx5e_skb_fifo_push(&sq->db.skb_fifo, skb);
mlx5e_tx_mpwqe_add_dseg(sq, &txd);
@@ -711,7 +711,7 @@ static void mlx5e_tx_wi_consume_fifo_skbs(struct mlx5e_txqsq *sq, struct mlx5e_t
int i;
for (i = 0; i < wi->num_fifo_pkts; i++) {
- struct sk_buff *skb = mlx5e_skb_fifo_pop(sq);
+ struct sk_buff *skb = mlx5e_skb_fifo_pop(&sq->db.skb_fifo);
mlx5e_consume_skb(sq, skb, cqe, napi_budget);
}
@@ -831,7 +831,7 @@ static void mlx5e_tx_wi_kfree_fifo_skbs(struct mlx5e_txqsq *sq, struct mlx5e_tx_
int i;
for (i = 0; i < wi->num_fifo_pkts; i++)
- dev_kfree_skb_any(mlx5e_skb_fifo_pop(sq));
+ dev_kfree_skb_any(mlx5e_skb_fifo_pop(&sq->db.skb_fifo));
}
void mlx5e_free_txqsq_descs(struct mlx5e_txqsq *sq)
--
2.26.2
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