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vxlan: simplify vxlan_remcsum

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Part of the parameters is not needed. Simplify the caller of this function
in preparation of making vxlan rx more comprehensible.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Benc 2016-02-16 21:58:59 +01:00 committed by David S. Miller
parent 54bfd872bf
commit be5cfeab8f
1 changed files with 8 additions and 14 deletions
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22
drivers/net/vxlan.c
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@ -1135,29 +1135,25 @@ static int vxlan_igmp_leave(struct vxlan_dev *vxlan)
return ret;
}
static struct vxlanhdr *vxlan_remcsum(struct sk_buff *skb, struct vxlanhdr *vh,
size_t hdrlen, __be32 vni_field,
bool nopartial)
static bool vxlan_remcsum(struct sk_buff *skb, u32 vxflags, __be32 vni_field)
{
size_t start, offset, plen;
if (skb->remcsum_offload)
return vh;
return true;
start = vxlan_rco_start(vni_field);
offset = start + vxlan_rco_offset(vni_field);
plen = hdrlen + offset + sizeof(u16);
plen = sizeof(struct vxlanhdr) + offset + sizeof(u16);
if (!pskb_may_pull(skb, plen))
return NULL;
return false;
vh = (struct vxlanhdr *)(udp_hdr(skb) + 1);
skb_remcsum_process(skb, (void *)(vxlan_hdr(skb) + 1), start, offset,
!!(vxflags & VXLAN_F_REMCSUM_NOPARTIAL));
skb_remcsum_process(skb, (void *)vh + hdrlen, start, offset,
nopartial);
return vh;
return true;
}
static void vxlan_rcv(struct vxlan_sock *vs, struct sk_buff *skb,
@ -1285,9 +1281,7 @@ static int vxlan_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
goto drop;
if ((flags & VXLAN_HF_RCO) && (vs->flags & VXLAN_F_REMCSUM_RX)) {
if (!vxlan_remcsum(skb, vxlan_hdr(skb), sizeof(struct vxlanhdr),
vni_field,
!!(vs->flags & VXLAN_F_REMCSUM_NOPARTIAL)))
if (!vxlan_remcsum(skb, vs->flags, vni_field))
goto drop;
flags &= ~VXLAN_HF_RCO;