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net: qualcomm: rmnet: use ip_is_fragment() 

In rmnet_map_ipv4_dl_csum_trailer() use ip_is_fragment() to
determine whether a socket buffer contains a packet fragment.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alex Elder 2021-06-11 14:05:22 -05:00 committed by David S. Miller
parent 9e4e1dd4d9
commit e4517d8a7f
1 changed files with 3 additions and 2 deletions
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5
drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
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@ -50,8 +50,9 @@ rmnet_map_ipv4_dl_csum_trailer(struct sk_buff *skb,
__be16 addend;
ip4h = (struct iphdr *)(skb->data);
if ((ntohs(ip4h->frag_off) & IP_MF) ||
((ntohs(ip4h->frag_off) & IP_OFFSET) > 0)) {
/* We don't support checksum offload on IPv4 fragments */
if (ip_is_fragment(ip4h)) {
priv->stats.csum_fragmented_pkt++;
return -EOPNOTSUPP;
}