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iptunnel: scrub packet in iptunnel_pull_header

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Part of skb_scrub_packet was open coded in iptunnel_pull_header. Let it call
skb_scrub_packet directly instead.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Benc 2016-02-18 11:22:52 +01:00 committed by David S. Miller
parent c9e78efb6f
commit 7f290c9435
7 changed files with 12 additions and 13 deletions
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4
drivers/net/geneve.c
View File

@ -237,7 +237,6 @@ static void geneve_rx(struct geneve_dev *geneve, struct geneve_sock *gs,
}
skb_reset_mac_header(skb);
skb_scrub_packet(skb, !net_eq(geneve->net, dev_net(geneve->dev)));
skb->protocol = eth_type_trans(skb, geneve->dev);
skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
@ -356,7 +355,8 @@ static int geneve_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
opts_len = geneveh->opt_len * 4;
if (iptunnel_pull_header(skb, GENEVE_BASE_HLEN + opts_len,
htons(ETH_P_TEB)))
htons(ETH_P_TEB),
!net_eq(geneve->net, dev_net(geneve->dev))))
goto drop;
geneve_rx(geneve, gs, skb);

4
drivers/net/vxlan.c
View File

@ -1198,7 +1198,6 @@ static void vxlan_rcv(struct vxlan_dev *vxlan, struct vxlan_sock *vs,
int err = 0;
skb_reset_mac_header(skb);
skb_scrub_packet(skb, !net_eq(vxlan->net, dev_net(vxlan->dev)));
skb->protocol = eth_type_trans(skb, vxlan->dev);
skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
@ -1305,7 +1304,8 @@ static int vxlan_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
if (!vxlan)
goto drop;
if (iptunnel_pull_header(skb, VXLAN_HLEN, htons(ETH_P_TEB)))
if (iptunnel_pull_header(skb, VXLAN_HLEN, htons(ETH_P_TEB),
!net_eq(vxlan->net, dev_net(vxlan->dev))))
goto drop;
if (vxlan_collect_metadata(vs)) {

3
include/net/ip_tunnels.h
View File

@ -270,7 +270,8 @@ static inline u8 ip_tunnel_ecn_encap(u8 tos, const struct iphdr *iph,
return INET_ECN_encapsulate(tos, inner);
}
int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto);
int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto,
bool xnet);
void iptunnel_xmit(struct sock *sk, struct rtable *rt, struct sk_buff *skb,
__be32 src, __be32 dst, u8 proto,
u8 tos, u8 ttl, __be16 df, bool xnet);

2
net/ipv4/ip_gre.c
View File

@ -238,7 +238,7 @@ static int parse_gre_header(struct sk_buff *skb, struct tnl_ptk_info *tpi,
return -EINVAL;
}
}
return iptunnel_pull_header(skb, hdr_len, tpi->proto);
return iptunnel_pull_header(skb, hdr_len, tpi->proto, false);
}
static void ipgre_err(struct sk_buff *skb, u32 info,

8
net/ipv4/ip_tunnel_core.c
View File

@ -86,7 +86,8 @@ void iptunnel_xmit(struct sock *sk, struct rtable *rt, struct sk_buff *skb,
}
EXPORT_SYMBOL_GPL(iptunnel_xmit);
int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto)
int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto,
bool xnet)
{
if (unlikely(!pskb_may_pull(skb, hdr_len)))
return -ENOMEM;
@ -109,13 +110,10 @@ int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto)
skb->protocol = inner_proto;
}
nf_reset(skb);
secpath_reset(skb);
skb_clear_hash_if_not_l4(skb);
skb_dst_drop(skb);
skb->vlan_tci = 0;
skb_set_queue_mapping(skb, 0);
skb->pkt_type = PACKET_HOST;
skb_scrub_packet(skb, xnet);
return 0;
}
EXPORT_SYMBOL_GPL(iptunnel_pull_header);

2
net/ipv4/ipip.c
View File

@ -195,7 +195,7 @@ static int ipip_rcv(struct sk_buff *skb)
if (tunnel) {
if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb))
goto drop;
if (iptunnel_pull_header(skb, 0, tpi.proto))
if (iptunnel_pull_header(skb, 0, tpi.proto, false))
goto drop;
return ip_tunnel_rcv(tunnel, skb, &tpi, NULL, log_ecn_error);
}

2
net/ipv6/sit.c
View File

@ -740,7 +740,7 @@ static int ipip_rcv(struct sk_buff *skb)
if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb))
goto drop;
if (iptunnel_pull_header(skb, 0, tpi.proto))
if (iptunnel_pull_header(skb, 0, tpi.proto, false))
goto drop;
return ip_tunnel_rcv(tunnel, skb, &tpi, NULL, log_ecn_error);
}