From d1002d2490e3ebc30dd3ba747656cfa90c87e984 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Fri, 11 Jun 2021 12:50:13 +0200 Subject: [PATCH] xfrm: remove hdr_offset indirection After previous patches all remaining users set the function pointer to the same function: xfrm6_find_1stfragopt. So remove this function pointer and call ip6_find_1stfragopt directly. Reduces size of xfrm_type to 64 bytes on 64bit platforms. Signed-off-by: Florian Westphal Signed-off-by: Steffen Klassert --- include/net/xfrm.h | 3 --- net/ipv6/ah6.c | 1 - net/ipv6/esp6.c | 1 - net/ipv6/ipcomp6.c | 1 - net/ipv6/xfrm6_output.c | 7 ------- net/xfrm/xfrm_output.c | 2 +- 6 files changed, 1 insertion(+), 14 deletions(-) diff --git a/include/net/xfrm.h b/include/net/xfrm.h index 1aad78c..c8890da 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -402,7 +402,6 @@ struct xfrm_type { int (*output)(struct xfrm_state *, struct sk_buff *pskb); int (*reject)(struct xfrm_state *, struct sk_buff *, const struct flowi *); - int (*hdr_offset)(struct xfrm_state *, struct sk_buff *, u8 **); }; int xfrm_register_type(const struct xfrm_type *type, unsigned short family); @@ -1605,8 +1604,6 @@ __be32 xfrm6_tunnel_alloc_spi(struct net *net, xfrm_address_t *saddr); __be32 xfrm6_tunnel_spi_lookup(struct net *net, const xfrm_address_t *saddr); int xfrm6_output(struct net *net, struct sock *sk, struct sk_buff *skb); int xfrm6_output_finish(struct sock *sk, struct sk_buff *skb); -int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb, - u8 **prevhdr); #ifdef CONFIG_XFRM void xfrm6_local_rxpmtu(struct sk_buff *skb, u32 mtu); diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c index e9705c2..828e625 100644 --- a/net/ipv6/ah6.c +++ b/net/ipv6/ah6.c @@ -762,7 +762,6 @@ static const struct xfrm_type ah6_type = { .destructor = ah6_destroy, .input = ah6_input, .output = ah6_output, - .hdr_offset = xfrm6_find_1stfragopt, }; static struct xfrm6_protocol ah6_protocol = { diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c index be2c0ac..37c4b17 100644 --- a/net/ipv6/esp6.c +++ b/net/ipv6/esp6.c @@ -1250,7 +1250,6 @@ static const struct xfrm_type esp6_type = { .destructor = esp6_destroy, .input = esp6_input, .output = esp6_output, - .hdr_offset = xfrm6_find_1stfragopt, }; static struct xfrm6_protocol esp6_protocol = { diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c index 491aba6..15f984b 100644 --- a/net/ipv6/ipcomp6.c +++ b/net/ipv6/ipcomp6.c @@ -178,7 +178,6 @@ static const struct xfrm_type ipcomp6_type = { .destructor = ipcomp_destroy, .input = ipcomp_input, .output = ipcomp_output, - .hdr_offset = xfrm6_find_1stfragopt, }; static struct xfrm6_protocol ipcomp6_protocol = { diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c index 8b84d53..57fa27c 100644 --- a/net/ipv6/xfrm6_output.c +++ b/net/ipv6/xfrm6_output.c @@ -16,13 +16,6 @@ #include #include -int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb, - u8 **prevhdr) -{ - return ip6_find_1stfragopt(skb, prevhdr); -} -EXPORT_SYMBOL(xfrm6_find_1stfragopt); - void xfrm6_local_rxpmtu(struct sk_buff *skb, u32 mtu) { struct flowi6 fl6; diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c index 1734339..10842d5 100644 --- a/net/xfrm/xfrm_output.c +++ b/net/xfrm/xfrm_output.c @@ -185,7 +185,7 @@ static int xfrm6_hdr_offset(struct xfrm_state *x, struct sk_buff *skb, u8 **prev break; } - return x->type->hdr_offset(x, skb, prevhdr); + return ip6_find_1stfragopt(skb, prevhdr); } /* Add encapsulation header. -- 2.7.4