diff options
| author |   Florian Westphal <fw@strlen.de> | 2019-03-29 21:16:32 +0100 |
|---|---|---|
| committer |   Steffen Klassert <steffen.klassert@secunet.com> | 2019-04-08 09:15:28 +0200 |
| commit | c9500d7b7de8ff6ac88ee3e38b782889f1616593 (patch) | |
| tree | 02e6040b32b9686f0f909e5e592dab6690be9275 /net/xfrm/xfrm_device.c | |
| parent | xfrm: make xfrm modes builtin (diff) | |
| download | linux-dev-c9500d7b7de8ff6ac88ee3e38b782889f1616593.tar.xz linux-dev-c9500d7b7de8ff6ac88ee3e38b782889f1616593.zip | |
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.c | 10 |
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; |