From 37fedd3aab6517daec628764c5d66dd8761fbe5f Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Wed, 10 Oct 2007 15:44:44 -0700 Subject: [IPSEC]: Use IPv6 calling convention as the convention for x->mode->output The IPv6 calling convention for x->mode->output is more general and could help an eventual protocol-generic x->type->output implementation. This patch adopts it for IPv4 as well and modifies the IPv4 type output functions accordingly. It also rewrites the IPv6 mac/transport header calculation to be based off the network header where practical. Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- net/ipv6/xfrm6_mode_tunnel.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) (limited to 'net/ipv6/xfrm6_mode_tunnel.c') diff --git a/net/ipv6/xfrm6_mode_tunnel.c b/net/ipv6/xfrm6_mode_tunnel.c index 01bd7d11ea1b..e79c6bdf71c1 100644 --- a/net/ipv6/xfrm6_mode_tunnel.c +++ b/net/ipv6/xfrm6_mode_tunnel.c @@ -36,13 +36,6 @@ static inline void ip6ip_ecn_decapsulate(struct sk_buff *skb) * The top IP header will be constructed per RFC 2401. The following fields * in it shall be filled in by x->type->output: * payload_len - * - * On exit, skb->h will be set to the start of the encapsulation header to be - * filled in by x->type->output and the mac header will be set to the - * nextheader field of the extension header directly preceding the - * encapsulation header, or in its absence, that of the top IP header. - * The value of the network header will always point to the top IP header - * while skb->data will point to the payload. */ static int xfrm6_tunnel_output(struct xfrm_state *x, struct sk_buff *skb) { @@ -53,11 +46,10 @@ static int xfrm6_tunnel_output(struct xfrm_state *x, struct sk_buff *skb) iph = ipv6_hdr(skb); - skb_set_mac_header(skb, offsetof(struct ipv6hdr, nexthdr) - - x->props.header_len); skb_set_network_header(skb, -x->props.header_len); - skb_set_transport_header(skb, sizeof(struct ipv6hdr) - - x->props.header_len); + skb->mac_header = skb->network_header + + offsetof(struct ipv6hdr, nexthdr); + skb->transport_header = skb->network_header + sizeof(*iph); top_iph = ipv6_hdr(skb); top_iph->version = 6; -- cgit v1.2.3-59-g8ed1b