From e695633e21ffb6a443a8c2f8b3f095c7f1a48eb0 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Sat, 1 Apr 2006 00:52:46 -0800 Subject: [PATCH] [IPSEC]: Kill unused decap state argument This patch removes the decap_state argument from the xfrm input hook. Previously this function allowed the input hook to share state with the post_input hook. The latter has since been removed. The only purpose for it now is to check the encap type. However, it is easier and better to move the encap type check to the generic xfrm_rcv function. This allows us to get rid of the decap state argument altogether. Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- include/net/xfrm.h | 2 +- net/ipv4/ah4.c | 2 +- net/ipv4/esp4.c | 5 +---- net/ipv4/ipcomp.c | 3 +-- net/ipv4/xfrm4_input.c | 5 ++++- net/ipv4/xfrm4_tunnel.c | 2 +- net/ipv6/ah6.c | 2 +- net/ipv6/esp6.c | 2 +- net/ipv6/ipcomp6.c | 2 +- net/ipv6/xfrm6_input.c | 2 +- net/ipv6/xfrm6_tunnel.c | 2 +- 11 files changed, 14 insertions(+), 15 deletions(-) diff --git a/include/net/xfrm.h b/include/net/xfrm.h index e100291e43..c7612f4443 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -251,7 +251,7 @@ struct xfrm_type int (*init_state)(struct xfrm_state *x); void (*destructor)(struct xfrm_state *); - int (*input)(struct xfrm_state *, struct xfrm_decap_state *, struct sk_buff *skb); + int (*input)(struct xfrm_state *, struct sk_buff *skb); int (*output)(struct xfrm_state *, struct sk_buff *pskb); /* Estimate maximal size of result of transformation of a dgram */ u32 (*get_max_size)(struct xfrm_state *, int size); diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c index e16d8b42b9..e2e4771fa4 100644 --- a/net/ipv4/ah4.c +++ b/net/ipv4/ah4.c @@ -116,7 +116,7 @@ error: return err; } -static int ah_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb) +static int ah_input(struct xfrm_state *x, struct sk_buff *skb) { int ah_hlen; struct iphdr *iph; diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c index bf88c620a9..9d1881c07a 100644 --- a/net/ipv4/esp4.c +++ b/net/ipv4/esp4.c @@ -133,7 +133,7 @@ error: * expensive, so we only support truncated data, which is the recommended * and common case. */ -static int esp_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb) +static int esp_input(struct xfrm_state *x, struct sk_buff *skb) { struct iphdr *iph; struct ip_esp_hdr *esph; @@ -208,9 +208,6 @@ static int esp_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struc struct xfrm_encap_tmpl *encap = x->encap; struct udphdr *uh; - if (encap->encap_type != decap->decap_type) - goto out; - uh = (struct udphdr *)(iph + 1); encap_len = (void*)esph - (void*)uh; diff --git a/net/ipv4/ipcomp.c b/net/ipv4/ipcomp.c index c95020f7c8..0a1d86a0f6 100644 --- a/net/ipv4/ipcomp.c +++ b/net/ipv4/ipcomp.c @@ -81,8 +81,7 @@ out: return err; } -static int ipcomp_input(struct xfrm_state *x, - struct xfrm_decap_state *decap, struct sk_buff *skb) +static int ipcomp_input(struct xfrm_state *x, struct sk_buff *skb) { u8 nexthdr; int err = 0; diff --git a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c index 850d919591..04ceb6e13b 100644 --- a/net/ipv4/xfrm4_input.c +++ b/net/ipv4/xfrm4_input.c @@ -90,6 +90,9 @@ int xfrm4_rcv_encap(struct sk_buff *skb, __u16 encap_type) if (unlikely(x->km.state != XFRM_STATE_VALID)) goto drop_unlock; + if (x->encap->encap_type != encap_type) + goto drop_unlock; + if (x->props.replay_window && xfrm_replay_check(x, seq)) goto drop_unlock; @@ -97,7 +100,7 @@ int xfrm4_rcv_encap(struct sk_buff *skb, __u16 encap_type) goto drop_unlock; xfrm_vec[xfrm_nr].decap.decap_type = encap_type; - if (x->type->input(x, &(xfrm_vec[xfrm_nr].decap), skb)) + if (x->type->input(x, skb)) goto drop_unlock; /* only the first xfrm gets the encap type */ diff --git a/net/ipv4/xfrm4_tunnel.c b/net/ipv4/xfrm4_tunnel.c index 2d670935c2..f8ceaa127c 100644 --- a/net/ipv4/xfrm4_tunnel.c +++ b/net/ipv4/xfrm4_tunnel.c @@ -21,7 +21,7 @@ static int ipip_output(struct xfrm_state *x, struct sk_buff *skb) return 0; } -static int ipip_xfrm_rcv(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb) +static int ipip_xfrm_rcv(struct xfrm_state *x, struct sk_buff *skb) { return 0; } diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c index cf58251df4..6778173a3d 100644 --- a/net/ipv6/ah6.c +++ b/net/ipv6/ah6.c @@ -229,7 +229,7 @@ error: return err; } -static int ah6_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb) +static int ah6_input(struct xfrm_state *x, struct sk_buff *skb) { /* * Before process AH diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c index 3dcaac7a09..22f0460790 100644 --- a/net/ipv6/esp6.c +++ b/net/ipv6/esp6.c @@ -130,7 +130,7 @@ error: return err; } -static int esp6_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb) +static int esp6_input(struct xfrm_state *x, struct sk_buff *skb) { struct ipv6hdr *iph; struct ipv6_esp_hdr *esph; diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c index d4cfec3f41..00f3fadfcc 100644 --- a/net/ipv6/ipcomp6.c +++ b/net/ipv6/ipcomp6.c @@ -63,7 +63,7 @@ static void **ipcomp6_scratches; static int ipcomp6_scratch_users; static LIST_HEAD(ipcomp6_tfms_list); -static int ipcomp6_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb) +static int ipcomp6_input(struct xfrm_state *x, struct sk_buff *skb) { int err = 0; u8 nexthdr = 0; diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c index cccf8b76f0..ec7a96e9fa 100644 --- a/net/ipv6/xfrm6_input.c +++ b/net/ipv6/xfrm6_input.c @@ -65,7 +65,7 @@ int xfrm6_rcv_spi(struct sk_buff *skb, u32 spi) if (xfrm_state_check_expire(x)) goto drop_unlock; - nexthdr = x->type->input(x, &(xfrm_vec[xfrm_nr].decap), skb); + nexthdr = x->type->input(x, skb); if (nexthdr <= 0) goto drop_unlock; diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c index a8f6776c51..d37768e506 100644 --- a/net/ipv6/xfrm6_tunnel.c +++ b/net/ipv6/xfrm6_tunnel.c @@ -351,7 +351,7 @@ static int xfrm6_tunnel_output(struct xfrm_state *x, struct sk_buff *skb) return 0; } -static int xfrm6_tunnel_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb) +static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb) { return 0; } -- 2.39.5