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authorFlorian Westphal <fw@strlen.de>2019-03-29 23:16:32 +0300
committerSteffen Klassert <steffen.klassert@secunet.com>2019-04-08 10:15:28 +0300
commitc9500d7b7de8ff6ac88ee3e38b782889f1616593 (patch)
tree02e6040b32b9686f0f909e5e592dab6690be9275 /net/xfrm/xfrm_device.c
parent4c145dce26013763490df88f2473714f5bc7857d (diff)
downloadlinux-c9500d7b7de8ff6ac88ee3e38b782889f1616593.tar.xz
xfrm: store xfrm_mode directly, not its address
This structure is now only 4 bytes, so its more efficient to cache a copy rather than its address. No significant size difference in allmodconfig vmlinux. With non-modular kernel that has all XFRM options enabled, this series reduces vmlinux image size by ~11kb. All xfrm_mode indirections are gone and all modes are built-in. before (ipsec-next master): text data bss dec filename 21071494 7233140 11104324 39408958 vmlinux.master after this series: 21066448 7226772 11104324 39397544 vmlinux.patched With allmodconfig kernel, the size increase is only 362 bytes, even all the xfrm config options removed in this series are modular. before: text data bss dec filename 15731286 6936912 4046908 26715106 vmlinux.master after this series: 15731492 6937068 4046908 26715468 vmlinux Signed-off-by: Florian Westphal <fw@strlen.de> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm/xfrm_device.c')
-rw-r--r--net/xfrm/xfrm_device.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c
index a20f376fe71f..b24cd86a02c3 100644
--- a/net/xfrm/xfrm_device.c
+++ b/net/xfrm/xfrm_device.c
@@ -53,20 +53,20 @@ static void __xfrm_mode_tunnel_prep(struct xfrm_state *x, struct sk_buff *skb,
/* Adjust pointers into the packet when IPsec is done at layer2 */
static void xfrm_outer_mode_prep(struct xfrm_state *x, struct sk_buff *skb)
{
- switch (x->outer_mode->encap) {
+ switch (x->outer_mode.encap) {
case XFRM_MODE_TUNNEL:
- if (x->outer_mode->family == AF_INET)
+ if (x->outer_mode.family == AF_INET)
return __xfrm_mode_tunnel_prep(x, skb,
sizeof(struct iphdr));
- if (x->outer_mode->family == AF_INET6)
+ if (x->outer_mode.family == AF_INET6)
return __xfrm_mode_tunnel_prep(x, skb,
sizeof(struct ipv6hdr));
break;
case XFRM_MODE_TRANSPORT:
- if (x->outer_mode->family == AF_INET)
+ if (x->outer_mode.family == AF_INET)
return __xfrm_transport_prep(x, skb,
sizeof(struct iphdr));
- if (x->outer_mode->family == AF_INET6)
+ if (x->outer_mode.family == AF_INET6)
return __xfrm_transport_prep(x, skb,
sizeof(struct ipv6hdr));
break;