Use fewer instructions to copy the first two bytes of Ethernet headers to work queue elements.
Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com> Acked-by: Adrien Mazarguil <adrien.mazarguil at 6wind.com> --- drivers/net/mlx5/mlx5_rxtx.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c index 0d0b807..4b8c197 100644 --- a/drivers/net/mlx5/mlx5_rxtx.c +++ b/drivers/net/mlx5/mlx5_rxtx.c @@ -409,7 +409,7 @@ mlx5_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n) unsigned int ds = 0; uintptr_t addr; uint16_t pkt_inline_sz = MLX5_WQE_DWORD_SIZE; - uint8_t ehdr[2]; + uint16_t ehdr; uint8_t cs_flags = 0; #ifdef MLX5_PMD_SOFT_COUNTERS uint32_t total_length = 0; @@ -436,8 +436,8 @@ mlx5_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n) rte_prefetch0(*pkts); addr = rte_pktmbuf_mtod(buf, uintptr_t); length = DATA_LEN(buf); - ehdr[0] = ((uint8_t *)addr)[0]; - ehdr[1] = ((uint8_t *)addr)[1]; + ehdr = (((uint8_t *)addr)[1] << 8) | + ((uint8_t *)addr)[0]; #ifdef MLX5_PMD_SOFT_COUNTERS total_length = length; #endif @@ -600,8 +600,7 @@ mlx5_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n) 0, cs_flags, 0, - (ehdr[1] << 24) | (ehdr[0] << 16) | - htons(pkt_inline_sz), + (ehdr << 16) | htons(pkt_inline_sz), }; txq->wqe_ci += (ds + 3) / 4; #ifdef MLX5_PMD_SOFT_COUNTERS -- 2.1.4