[dpdk-dev] net/mlx5: remove extra check on Rx
Checks
Commit Message
Removing this check improves performance as VLAN and CRC stripping are
enabled most of the time.
Convert MLX5_CQE_VLAN_STRIPPED to network order to speed up the check
instead of doing it on the completion queue entry field.
Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
---
drivers/net/mlx5/mlx5_rxtx.c | 28 ++++++++++++----------------
1 file changed, 12 insertions(+), 16 deletions(-)
Comments
On 4/11/2017 1:46 PM, Nelio Laranjeiro wrote:
> Removing this check improves performance as VLAN and CRC stripping are
> enabled most of the time.
>
> Convert MLX5_CQE_VLAN_STRIPPED to network order to speed up the check
> instead of doing it on the completion queue entry field.
>
> Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
> Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
Applied to dpdk-next-net/master, thanks.
@@ -2041,23 +2041,19 @@ mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
mlx5_flow_mark_get(mark);
}
}
- if (rxq->csum | rxq->csum_l2tun | rxq->vlan_strip |
- rxq->crc_present) {
- if (rxq->csum) {
- pkt->packet_type =
- rxq_cq_to_pkt_type(cqe);
- pkt->ol_flags |=
- rxq_cq_to_ol_flags(rxq, cqe);
- }
- if (ntohs(cqe->hdr_type_etc) &
- MLX5_CQE_VLAN_STRIPPED) {
- pkt->ol_flags |= PKT_RX_VLAN_PKT |
- PKT_RX_VLAN_STRIPPED;
- pkt->vlan_tci = ntohs(cqe->vlan_info);
- }
- if (rxq->crc_present)
- len -= ETHER_CRC_LEN;
+ if (rxq->csum | rxq->csum_l2tun) {
+ pkt->packet_type = rxq_cq_to_pkt_type(cqe);
+ pkt->ol_flags |= rxq_cq_to_ol_flags(rxq, cqe);
+ }
+ if (rxq->vlan_strip &&
+ (cqe->hdr_type_etc &
+ htons(MLX5_CQE_VLAN_STRIPPED))) {
+ pkt->ol_flags |= PKT_RX_VLAN_PKT |
+ PKT_RX_VLAN_STRIPPED;
+ pkt->vlan_tci = ntohs(cqe->vlan_info);
}
+ if (rxq->crc_present)
+ len -= ETHER_CRC_LEN;
PKT_LEN(pkt) = len;
}
DATA_LEN(rep) = DATA_LEN(seg);