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/ipv4 | |
| 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/ipv4')
| -rw-r--r-- | net/ipv4/esp4_offload.c | 2 | ||||
| -rw-r--r-- | net/ipv4/ip_vti.c | 2 | ||||
| -rw-r--r-- | net/ipv4/xfrm4_output.c | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/net/ipv4/esp4_offload.c b/net/ipv4/esp4_offload.c index 74d59e0177a7..b61a8ff558f9 100644 --- a/net/ipv4/esp4_offload.c +++ b/net/ipv4/esp4_offload.c @@ -135,7 +135,7 @@ static struct sk_buff *xfrm4_outer_mode_gso_segment(struct xfrm_state *x, struct sk_buff *skb, netdev_features_t features) { - switch (x->outer_mode->encap) { + switch (x->outer_mode.encap) { case XFRM_MODE_TUNNEL: return xfrm4_tunnel_gso_segment(x, skb, features); case XFRM_MODE_TRANSPORT: diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c index 91926c9a3bc9..cc5d9c0a8a10 100644 --- a/net/ipv4/ip_vti.c +++ b/net/ipv4/ip_vti.c @@ -126,7 +126,7 @@ static int vti_rcv_cb(struct sk_buff *skb, int err) x = xfrm_input_state(skb); - inner_mode = x->inner_mode; + inner_mode = &x->inner_mode; if (x->sel.family == AF_UNSPEC) { inner_mode = xfrm_ip2inner_mode(x, XFRM_MODE_SKB_CB(skb)->protocol); diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c index 7c3df14daef3..9bb8905088c7 100644 --- a/net/ipv4/xfrm4_output.c +++ b/net/ipv4/xfrm4_output.c @@ -83,7 +83,7 @@ static int __xfrm4_output(struct net *net, struct sock *sk, struct sk_buff *skb) #endif rcu_read_lock(); - afinfo = xfrm_state_afinfo_get_rcu(x->outer_mode->family); + afinfo = xfrm_state_afinfo_get_rcu(x->outer_mode.family); if (likely(afinfo)) ret = afinfo->output_finish(sk, skb); else |