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authorFlorian Westphal <fw@strlen.de>2019-03-29 21:16:24 +0100
committerSteffen Klassert <steffen.klassert@secunet.com>2019-04-08 09:14:21 +0200
commitc2d305e51038167dd9de8d476c72f667d84cad8b (patch)
tree914e0826a4ba665e14d60e9d4e090566d5c2790d /net/ipv6/xfrm6_mode_transport.c
parentxfrm: prefer family stored in xfrm_mode struct (diff)
downloadlinux-dev-c2d305e51038167dd9de8d476c72f667d84cad8b.tar.xz
linux-dev-c2d305e51038167dd9de8d476c72f667d84cad8b.zip
xfrm: remove input indirection from xfrm_mode
No need for any indirection or abstraction here, both functions are pretty much the same and quite small, they also have no external dependencies. xfrm_prepare_input can then be made static. With allmodconfig build, size increase of vmlinux is 25 byte: Before: text data bss dec filename 15730207 6936924 4046908 26714039 vmlinux After: 15730208 6936948 4046908 26714064 vmlinux v2: Fix INET_XFRM_MODE_TRANSPORT name in is-enabled test (Sabrina Dubroca) change copied comment to refer to transport and network header, not skb->{h,nh}, which don't exist anymore. (Sabrina) make xfrm_prepare_input static (Eyal Birger) 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/ipv6/xfrm6_mode_transport.c')
-rw-r--r--net/ipv6/xfrm6_mode_transport.c25
1 files changed, 0 insertions, 25 deletions
diff --git a/net/ipv6/xfrm6_mode_transport.c b/net/ipv6/xfrm6_mode_transport.c
index 66ae79218bdf..4c306bb99284 100644
--- a/net/ipv6/xfrm6_mode_transport.c
+++ b/net/ipv6/xfrm6_mode_transport.c
@@ -40,29 +40,6 @@ static int xfrm6_transport_output(struct xfrm_state *x, struct sk_buff *skb)
return 0;
}
-/* Remove encapsulation header.
- *
- * The IP header will be moved over the top of the encapsulation header.
- *
- * On entry, skb->h shall point to where the IP header should be and skb->nh
- * shall be set to where the IP header currently is. skb->data shall point
- * to the start of the payload.
- */
-static int xfrm6_transport_input(struct xfrm_state *x, struct sk_buff *skb)
-{
- int ihl = skb->data - skb_transport_header(skb);
-
- if (skb->transport_header != skb->network_header) {
- memmove(skb_transport_header(skb),
- skb_network_header(skb), ihl);
- skb->network_header = skb->transport_header;
- }
- ipv6_hdr(skb)->payload_len = htons(skb->len + ihl -
- sizeof(struct ipv6hdr));
- skb_reset_transport_header(skb);
- return 0;
-}
-
static struct sk_buff *xfrm4_transport_gso_segment(struct xfrm_state *x,
struct sk_buff *skb,
netdev_features_t features)
@@ -92,9 +69,7 @@ static void xfrm6_transport_xmit(struct xfrm_state *x, struct sk_buff *skb)
}
}
-
static struct xfrm_mode xfrm6_transport_mode = {
- .input = xfrm6_transport_input,
.output = xfrm6_transport_output,
.gso_segment = xfrm4_transport_gso_segment,
.xmit = xfrm6_transport_xmit,