Commit 6d004d6c authored by Steffen Klassert's avatar Steffen Klassert
Browse files

vti: Use the tunnel mark for lookup in the error handlers. 



We need to use the mark we get from the tunnels o_key to
lookup the right vti state in the error handlers. This patch
ensures that.

Fixes: df3893c1 ("vti: Update the ipv4 side to use it's own receive hook.")
Fixes: fa9ad96d ("vti6: Update the ipv6 side to use its own receive hook.")
Signed-off-by: default avatarSteffen Klassert <steffen.klassert@secunet.com>
parent fd711436

net/ipv4/ip_vti.c

+4 −1
Original line number Diff line number Diff line
@@ -239,6 +239,7 @@ static netdev_tx_t vti_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) 
static int vti4_err(struct sk_buff *skb, u32 info)

{

	__be32 spi;

	__u32 mark;

	struct xfrm_state *x;

	struct ip_tunnel *tunnel;

	struct ip_esp_hdr *esph;
@@ -254,6 +255,8 @@ static int vti4_err(struct sk_buff *skb, u32 info) 
	if (!tunnel)

		return -1;



	mark = be32_to_cpu(tunnel->parms.o_key);



	switch (protocol) {

	case IPPROTO_ESP:

		esph = (struct ip_esp_hdr *)(skb->data+(iph->ihl<<2));
@@ -281,7 +284,7 @@ static int vti4_err(struct sk_buff *skb, u32 info) 
		return 0;

	}



	x = xfrm_state_lookup(net, skb->mark, (const xfrm_address_t *)&iph->daddr,

	x = xfrm_state_lookup(net, mark, (const xfrm_address_t *)&iph->daddr,

			      spi, protocol, AF_INET);

	if (!x)

		return 0;

net/ipv6/ip6_vti.c

+4 −1
Original line number Diff line number Diff line
@@ -511,6 +511,7 @@ static int vti6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, 
		    u8 type, u8 code, int offset, __be32 info)

{

	__be32 spi;

	__u32 mark;

	struct xfrm_state *x;

	struct ip6_tnl *t;

	struct ip_esp_hdr *esph;
@@ -524,6 +525,8 @@ static int vti6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, 
	if (!t)

		return -1;



	mark = be32_to_cpu(t->parms.o_key);



	switch (protocol) {

	case IPPROTO_ESP:

		esph = (struct ip_esp_hdr *)(skb->data + offset);
@@ -545,7 +548,7 @@ static int vti6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, 
	    type != NDISC_REDIRECT)

		return 0;



	x = xfrm_state_lookup(net, skb->mark, (const xfrm_address_t *)&iph->daddr,

	x = xfrm_state_lookup(net, mark, (const xfrm_address_t *)&iph->daddr,

			      spi, protocol, AF_INET6);

	if (!x)

		return 0;

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