diff options
| author | Jianfeng Tan <jianfeng.tan@linux.alibaba.com> | 2018-09-29 18:41:27 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-10-05 08:23:15 +0300 |
| commit | 9d2f67e43b73e8af7438be219b66a5de0cfa8bd9 (patch) | |
| tree | 015f9d003d764dbb4aea0fde8d2ea6c01eafd577 /include | |
| parent | ca8931948344c485569b04821d1f6bcebccd376b (diff) | |
| download | linux-9d2f67e43b73e8af7438be219b66a5de0cfa8bd9.tar.xz | |
net/packet: fix packet drop as of virtio gso
When we use raw socket as the vhost backend, a packet from virito with
gso offloading information, cannot be sent out in later validaton at
xmit path, as we did not set correct skb->protocol which is further used
for looking up the gso function.
To fix this, we set this field according to virito hdr information.
Fixes: e858fae2b0b8f4 ("virtio_net: use common code for virtio_net_hdr and skb GSO conversion")
Signed-off-by: Jianfeng Tan <jianfeng.tan@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/virtio_net.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/virtio_net.h b/include/linux/virtio_net.h index 9397628a1967..cb462f9ab7dd 100644 --- a/include/linux/virtio_net.h +++ b/include/linux/virtio_net.h @@ -5,6 +5,24 @@ #include <linux/if_vlan.h> #include <uapi/linux/virtio_net.h> +static inline int virtio_net_hdr_set_proto(struct sk_buff *skb, + const struct virtio_net_hdr *hdr) +{ + switch (hdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN) { + case VIRTIO_NET_HDR_GSO_TCPV4: + case VIRTIO_NET_HDR_GSO_UDP: + skb->protocol = cpu_to_be16(ETH_P_IP); + break; + case VIRTIO_NET_HDR_GSO_TCPV6: + skb->protocol = cpu_to_be16(ETH_P_IPV6); + break; + default: + return -EINVAL; + } + + return 0; +} + static inline int virtio_net_hdr_to_skb(struct sk_buff *skb, const struct virtio_net_hdr *hdr, bool little_endian) |