From b3284df1c86f7ac078dcb8fb250fe3d6437e740c Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Fri, 29 Mar 2019 21:16:28 +0100 Subject: xfrm: remove input2 indirection from xfrm_mode No external dependencies on any module, place this in the core. Increase is about 1800 byte for xfrm_input.o. The beet helpers get added to internal header, as they can be reused from xfrm_output.c in the next patch (kernel contains several copies of them in the xfrm{4,6}_mode_beet.c files). Before: text data bss dec filename 5578 176 2364 8118 net/xfrm/xfrm_input.o 1180 64 0 1244 net/ipv4/xfrm4_mode_beet.o 171 40 0 211 net/ipv4/xfrm4_mode_transport.o 1163 40 0 1203 net/ipv4/xfrm4_mode_tunnel.o 1083 52 0 1135 net/ipv6/xfrm6_mode_beet.o 172 40 0 212 net/ipv6/xfrm6_mode_ro.o 172 40 0 212 net/ipv6/xfrm6_mode_transport.o 1056 40 0 1096 net/ipv6/xfrm6_mode_tunnel.o After: text data bss dec filename 7373 200 2364 9937 net/xfrm/xfrm_input.o 587 44 0 631 net/ipv4/xfrm4_mode_beet.o 171 32 0 203 net/ipv4/xfrm4_mode_transport.o 649 32 0 681 net/ipv4/xfrm4_mode_tunnel.o 625 44 0 669 net/ipv6/xfrm6_mode_beet.o 172 32 0 204 net/ipv6/xfrm6_mode_ro.o 172 32 0 204 net/ipv6/xfrm6_mode_transport.o 599 32 0 631 net/ipv6/xfrm6_mode_tunnel.o v2: pass inner_mode to xfrm_inner_mode_encap_remove to fix AF_UNSPEC selector breakage (bisected by Benedict Wong) Signed-off-by: Florian Westphal Reviewed-by: Sabrina Dubroca Signed-off-by: Steffen Klassert --- net/xfrm/xfrm_inout.h | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 net/xfrm/xfrm_inout.h (limited to 'net/xfrm/xfrm_inout.h') diff --git a/net/xfrm/xfrm_inout.h b/net/xfrm/xfrm_inout.h new file mode 100644 index 000000000000..c7b0318938e2 --- /dev/null +++ b/net/xfrm/xfrm_inout.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include +#include +#include + +#ifndef XFRM_INOUT_H +#define XFRM_INOUT_H 1 + +static inline void xfrm6_beet_make_header(struct sk_buff *skb) +{ + struct ipv6hdr *iph = ipv6_hdr(skb); + + iph->version = 6; + + memcpy(iph->flow_lbl, XFRM_MODE_SKB_CB(skb)->flow_lbl, + sizeof(iph->flow_lbl)); + iph->nexthdr = XFRM_MODE_SKB_CB(skb)->protocol; + + ipv6_change_dsfield(iph, 0, XFRM_MODE_SKB_CB(skb)->tos); + iph->hop_limit = XFRM_MODE_SKB_CB(skb)->ttl; +} + +static inline void xfrm4_beet_make_header(struct sk_buff *skb) +{ + struct iphdr *iph = ip_hdr(skb); + + iph->ihl = 5; + iph->version = 4; + + iph->protocol = XFRM_MODE_SKB_CB(skb)->protocol; + iph->tos = XFRM_MODE_SKB_CB(skb)->tos; + + iph->id = XFRM_MODE_SKB_CB(skb)->id; + iph->frag_off = XFRM_MODE_SKB_CB(skb)->frag_off; + iph->ttl = XFRM_MODE_SKB_CB(skb)->ttl; +} + +#endif -- cgit v1.2.3