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net: hns3: add UDP segmentation offload support 

Add support for UDP segmentation offload to the HNS3 driver
when the device can do it.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Huazhong Tan 2020-09-29 17:32:01 +08:00 committed by David S. Miller
parent 6ad595bc98
commit 0692cfe94a
1 changed files with 17 additions and 3 deletions
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20
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
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@ -696,12 +696,19 @@ static int hns3_set_tso(struct sk_buff *skb, u32 *paylen,
/* normal or tunnel packet */ /* normal or tunnel packet */
l4_offset = l4.hdr - skb->data; l4_offset = l4.hdr - skb->data;
hdr_len = (l4.tcp->doff << 2) + l4_offset;
/* remove payload length from inner pseudo checksum when tso */ /* remove payload length from inner pseudo checksum when tso */
l4_paylen = skb->len - l4_offset; l4_paylen = skb->len - l4_offset;
csum_replace_by_diff(&l4.tcp->check,
(__force __wsum)htonl(l4_paylen)); if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
hdr_len = sizeof(*l4.udp) + l4_offset;
csum_replace_by_diff(&l4.udp->check,
(__force __wsum)htonl(l4_paylen));
} else {
hdr_len = (l4.tcp->doff << 2) + l4_offset;
csum_replace_by_diff(&l4.tcp->check,
(__force __wsum)htonl(l4_paylen));
}
/* find the txbd field values */ /* find the txbd field values */
*paylen = skb->len - hdr_len; *paylen = skb->len - hdr_len;
@ -2311,6 +2318,13 @@ static void hns3_set_default_feature(struct net_device *netdev)
netdev->features |= NETIF_F_NTUPLE; netdev->features |= NETIF_F_NTUPLE;
} }
} }
if (test_bit(HNAE3_DEV_SUPPORT_UDP_GSO_B, ae_dev->caps)) {
netdev->hw_features |= NETIF_F_GSO_UDP_L4;
netdev->features |= NETIF_F_GSO_UDP_L4;
netdev->vlan_features |= NETIF_F_GSO_UDP_L4;
netdev->hw_enc_features |= NETIF_F_GSO_UDP_L4;
}
} }
static int hns3_alloc_buffer(struct hns3_enet_ring *ring, static int hns3_alloc_buffer(struct hns3_enet_ring *ring,