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vxlan: move GBP header parsing to a separate function 

To make vxlan_udp_encap_recv shorter and 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 21:59:00 +01:00 committed by David S. Miller
parent be5cfeab8f
commit 3288af0892
1 changed files with 19 additions and 14 deletions
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33
drivers/net/vxlan.c
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@ -1156,6 +1156,24 @@ static bool vxlan_remcsum(struct sk_buff *skb, u32 vxflags, __be32 vni_field)
return true; return true;
} }
static void vxlan_parse_gbp_hdr(struct sk_buff *skb, struct vxlan_metadata *md,
struct metadata_dst *tun_dst)
{
struct vxlanhdr_gbp *gbp;
gbp = (struct vxlanhdr_gbp *)vxlan_hdr(skb);
md->gbp = ntohs(gbp->policy_id);
if (tun_dst)
tun_dst->u.tun_info.key.tun_flags |= TUNNEL_VXLAN_OPT;
if (gbp->dont_learn)
md->gbp |= VXLAN_GBP_DONT_LEARN;
if (gbp->policy_applied)
md->gbp |= VXLAN_GBP_POLICY_APPLIED;
}
static void vxlan_rcv(struct vxlan_sock *vs, struct sk_buff *skb, static void vxlan_rcv(struct vxlan_sock *vs, struct sk_buff *skb,
struct vxlan_metadata *md, __be32 vni, struct vxlan_metadata *md, __be32 vni,
struct metadata_dst *tun_dst) struct metadata_dst *tun_dst)
@ -1304,20 +1322,7 @@ static int vxlan_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
* used by VXLAN extensions if explicitly requested. * used by VXLAN extensions if explicitly requested.
*/ */
if ((flags & VXLAN_HF_GBP) && (vs->flags & VXLAN_F_GBP)) { if ((flags & VXLAN_HF_GBP) && (vs->flags & VXLAN_F_GBP)) {
struct vxlanhdr_gbp *gbp; vxlan_parse_gbp_hdr(skb, md, tun_dst);
gbp = (struct vxlanhdr_gbp *)vxlan_hdr(skb);
md->gbp = ntohs(gbp->policy_id);
if (tun_dst)
tun_dst->u.tun_info.key.tun_flags |= TUNNEL_VXLAN_OPT;
if (gbp->dont_learn)
md->gbp |= VXLAN_GBP_DONT_LEARN;
if (gbp->policy_applied)
md->gbp |= VXLAN_GBP_POLICY_APPLIED;
flags &= ~VXLAN_GBP_USED_BITS; flags &= ~VXLAN_GBP_USED_BITS;
} }