[dpdk-dev] [PATCH v3 2/7] mlx5: reorder TX/RX queue structure
Adrien Mazarguil
adrien.mazarguil at 6wind.com
Thu Mar 3 15:27:12 CET 2016
From: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
Remove padding and move important fields to the beginning for better
performance.
Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
---
drivers/net/mlx5/mlx5_rxtx.h | 31 ++++++++++++++++---------------
1 file changed, 16 insertions(+), 15 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h
index fde0ca2..4a857d8 100644
--- a/drivers/net/mlx5/mlx5_rxtx.h
+++ b/drivers/net/mlx5/mlx5_rxtx.h
@@ -105,7 +105,6 @@ struct priv;
struct rxq {
struct priv *priv; /* Back pointer to private data. */
struct rte_mempool *mp; /* Memory Pool for allocations. */
- struct ibv_mr *mr; /* Memory Region (for mp). */
struct ibv_cq *cq; /* Completion Queue. */
struct ibv_exp_wq *wq; /* Work Queue. */
struct ibv_exp_wq_family *if_wq; /* WQ burst interface. */
@@ -117,19 +116,20 @@ struct rxq {
unsigned int port_id; /* Port ID for incoming packets. */
unsigned int elts_n; /* (*elts)[] length. */
unsigned int elts_head; /* Current index in (*elts)[]. */
- union {
- struct rxq_elt_sp (*sp)[]; /* Scattered RX elements. */
- struct rxq_elt (*no_sp)[]; /* RX elements. */
- } elts;
unsigned int sp:1; /* Use scattered RX elements. */
unsigned int csum:1; /* Enable checksum offloading. */
unsigned int csum_l2tun:1; /* Same for L2 tunnels. */
unsigned int vlan_strip:1; /* Enable VLAN stripping. */
+ union {
+ struct rxq_elt_sp (*sp)[]; /* Scattered RX elements. */
+ struct rxq_elt (*no_sp)[]; /* RX elements. */
+ } elts;
uint32_t mb_len; /* Length of a mp-issued mbuf. */
- struct mlx5_rxq_stats stats; /* RX queue counters. */
unsigned int socket; /* CPU socket ID for allocations. */
+ struct mlx5_rxq_stats stats; /* RX queue counters. */
struct ibv_exp_res_domain *rd; /* Resource Domain. */
struct fdir_queue fdir_queue; /* Flow director queue. */
+ struct ibv_mr *mr; /* Memory Region (for mp). */
};
/* Hash RX queue types. */
@@ -248,30 +248,31 @@ typedef uint8_t linear_t[16384];
/* TX queue descriptor. */
struct txq {
struct priv *priv; /* Back pointer to private data. */
- struct {
- const struct rte_mempool *mp; /* Cached Memory Pool. */
- struct ibv_mr *mr; /* Memory Region (for mp). */
- uint32_t lkey; /* mr->lkey */
- } mp2mr[MLX5_PMD_TX_MP_CACHE]; /* MP to MR translation table. */
struct ibv_cq *cq; /* Completion Queue. */
struct ibv_qp *qp; /* Queue Pair. */
- struct ibv_exp_qp_burst_family *if_qp; /* QP burst interface. */
- struct ibv_exp_cq_family *if_cq; /* CQ interface. */
+ struct txq_elt (*elts)[]; /* TX elements. */
#if MLX5_PMD_MAX_INLINE > 0
uint32_t max_inline; /* Max inline send size <= MLX5_PMD_MAX_INLINE. */
#endif
unsigned int elts_n; /* (*elts)[] length. */
- struct txq_elt (*elts)[]; /* TX elements. */
unsigned int elts_head; /* Current index in (*elts)[]. */
unsigned int elts_tail; /* First element awaiting completion. */
unsigned int elts_comp; /* Number of completion requests. */
unsigned int elts_comp_cd; /* Countdown for next completion request. */
unsigned int elts_comp_cd_init; /* Initial value for countdown. */
+ struct {
+ const struct rte_mempool *mp; /* Cached Memory Pool. */
+ struct ibv_mr *mr; /* Memory Region (for mp). */
+ uint32_t lkey; /* mr->lkey */
+ } mp2mr[MLX5_PMD_TX_MP_CACHE]; /* MP to MR translation table. */
struct mlx5_txq_stats stats; /* TX queue counters. */
+ /* Elements used only for init part are here. */
linear_t (*elts_linear)[]; /* Linearized buffers. */
struct ibv_mr *mr_linear; /* Memory Region for linearized buffers. */
- unsigned int socket; /* CPU socket ID for allocations. */
+ struct ibv_exp_qp_burst_family *if_qp; /* QP burst interface. */
+ struct ibv_exp_cq_family *if_cq; /* CQ interface. */
struct ibv_exp_res_domain *rd; /* Resource Domain. */
+ unsigned int socket; /* CPU socket ID for allocations. */
};
/* mlx5_rxq.c */
--
2.1.4
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