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The function only initializes the XFRM CB in the skb.
After previous patch xfrm4_extract_header is only called from
net/xfrm/xfrm_{input,output}.c.
Because of IPV6=m linker errors the ipv6 equivalent
(xfrm6_extract_header) was already placed in xfrm_inout.h because
we can't call functions residing in a module from the core.
So do the same for the ipv4 helper and place it next to the ipv6 one.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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In order to keep CONFIG_IPV6=m working, xfrm6_extract_header needs to be
duplicated. It will be removed again in a followup change when the
remaining caller is moved to net/xfrm as well.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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No external dependencies on any module, place this in the core.
Increase is about 1800 byte for xfrm_input.o.
The beet helpers get added to internal header, as they can be reused
from xfrm_output.c in the next patch (kernel contains several
copies of them in the xfrm{4,6}_mode_beet.c files).
Before:
text data bss dec filename
5578 176 2364 8118 net/xfrm/xfrm_input.o
1180 64 0 1244 net/ipv4/xfrm4_mode_beet.o
171 40 0 211 net/ipv4/xfrm4_mode_transport.o
1163 40 0 1203 net/ipv4/xfrm4_mode_tunnel.o
1083 52 0 1135 net/ipv6/xfrm6_mode_beet.o
172 40 0 212 net/ipv6/xfrm6_mode_ro.o
172 40 0 212 net/ipv6/xfrm6_mode_transport.o
1056 40 0 1096 net/ipv6/xfrm6_mode_tunnel.o
After:
text data bss dec filename
7373 200 2364 9937 net/xfrm/xfrm_input.o
587 44 0 631 net/ipv4/xfrm4_mode_beet.o
171 32 0 203 net/ipv4/xfrm4_mode_transport.o
649 32 0 681 net/ipv4/xfrm4_mode_tunnel.o
625 44 0 669 net/ipv6/xfrm6_mode_beet.o
172 32 0 204 net/ipv6/xfrm6_mode_ro.o
172 32 0 204 net/ipv6/xfrm6_mode_transport.o
599 32 0 631 net/ipv6/xfrm6_mode_tunnel.o
v2: pass inner_mode to xfrm_inner_mode_encap_remove to fix
AF_UNSPEC selector breakage (bisected by Benedict Wong)
Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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