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_output.c | |
| parent | xfrm: make xfrm modes builtin (diff) | |
| download | linux-c9500d7b7de8ff6ac88ee3e38b782889f1616593.tar.xz linux-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_output.c')
| -rw-r--r-- | net/xfrm/xfrm_output.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c index 3cb2a328a8ab..a55510f9ff35 100644 --- a/net/xfrm/xfrm_output.c +++ b/net/xfrm/xfrm_output.c @@ -334,7 +334,7 @@ static int xfrm4_prepare_output(struct xfrm_state *x, struct sk_buff *skb) IPCB(skb)->flags |= IPSKB_XFRM_TUNNEL_SIZE; skb->protocol = htons(ETH_P_IP); - switch (x->outer_mode->encap) { + switch (x->outer_mode.encap) { case XFRM_MODE_BEET: return xfrm4_beet_encap_add(x, skb); case XFRM_MODE_TUNNEL: @@ -357,7 +357,7 @@ static int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb) skb->ignore_df = 1; skb->protocol = htons(ETH_P_IPV6); - switch (x->outer_mode->encap) { + switch (x->outer_mode.encap) { case XFRM_MODE_BEET: return xfrm6_beet_encap_add(x, skb); case XFRM_MODE_TUNNEL: @@ -373,22 +373,22 @@ static int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb) static int xfrm_outer_mode_output(struct xfrm_state *x, struct sk_buff *skb) { - switch (x->outer_mode->encap) { + switch (x->outer_mode.encap) { case XFRM_MODE_BEET: case XFRM_MODE_TUNNEL: - if (x->outer_mode->family == AF_INET) + if (x->outer_mode.family == AF_INET) return xfrm4_prepare_output(x, skb); - if (x->outer_mode->family == AF_INET6) + if (x->outer_mode.family == AF_INET6) return xfrm6_prepare_output(x, skb); break; case XFRM_MODE_TRANSPORT: - if (x->outer_mode->family == AF_INET) + if (x->outer_mode.family == AF_INET) return xfrm4_transport_output(x, skb); - if (x->outer_mode->family == AF_INET6) + if (x->outer_mode.family == AF_INET6) return xfrm6_transport_output(x, skb); break; case XFRM_MODE_ROUTEOPTIMIZATION: - if (x->outer_mode->family == AF_INET6) + if (x->outer_mode.family == AF_INET6) return xfrm6_ro_output(x, skb); WARN_ON_ONCE(1); break; @@ -489,7 +489,7 @@ resume: } skb_dst_set(skb, dst); x = dst->xfrm; - } while (x && !(x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL)); + } while (x && !(x->outer_mode.flags & XFRM_MODE_FLAG_TUNNEL)); return 0; @@ -626,7 +626,7 @@ static int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb) inner_mode = xfrm_ip2inner_mode(x, xfrm_af2proto(skb_dst(skb)->ops->family)); else - inner_mode = x->inner_mode; + inner_mode = &x->inner_mode; if (inner_mode == NULL) return -EAFNOSUPPORT; |