net/mlx5e: Support RX CHECKSUM_COMPLETE
Only for packets with first ethertype set to IPv4/6 for now.
Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
index 9bb88f6..caea062 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
@@ -151,6 +151,38 @@
skb_set_hash(skb, be32_to_cpu(cqe->rss_hash_result), ht);
}
+static inline bool is_first_ethertype_ip(struct sk_buff *skb)
+{
+ __be16 ethertype = ((struct ethhdr *)skb->data)->h_proto;
+
+ return (ethertype == htons(ETH_P_IP) || ethertype == htons(ETH_P_IPV6));
+}
+
+static inline void mlx5e_handle_csum(struct net_device *netdev,
+ struct mlx5_cqe64 *cqe,
+ struct mlx5e_rq *rq,
+ struct sk_buff *skb)
+{
+ if (unlikely(!(netdev->features & NETIF_F_RXCSUM)))
+ goto csum_none;
+
+ if (likely(cqe->hds_ip_ext & CQE_L4_OK)) {
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ } else if (is_first_ethertype_ip(skb)) {
+ skb->ip_summed = CHECKSUM_COMPLETE;
+ skb->csum = csum_unfold(cqe->check_sum);
+ rq->stats.csum_sw++;
+ } else {
+ goto csum_none;
+ }
+
+ return;
+
+csum_none:
+ skb->ip_summed = CHECKSUM_NONE;
+ rq->stats.csum_none++;
+}
+
static inline void mlx5e_build_rx_skb(struct mlx5_cqe64 *cqe,
struct mlx5e_rq *rq,
struct sk_buff *skb)
@@ -169,15 +201,7 @@
rq->stats.lro_bytes += cqe_bcnt;
}
- if (likely(netdev->features & NETIF_F_RXCSUM) &&
- (cqe->hds_ip_ext & CQE_L2_OK) &&
- (cqe->hds_ip_ext & CQE_L3_OK) &&
- (cqe->hds_ip_ext & CQE_L4_OK)) {
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- } else {
- skb->ip_summed = CHECKSUM_NONE;
- rq->stats.csum_none++;
- }
+ mlx5e_handle_csum(netdev, cqe, rq, skb);
skb->protocol = eth_type_trans(skb, netdev);