WSL2-Linux-Kernel/net/xfrm
Herbert Xu 752c1f4c78 [IPSEC]: Kill post_input hook and do NAT-T in esp_input directly
The only reason post_input exists at all is that it gives us the
potential to adjust the checksums incrementally in future which
we ought to do.

However, after thinking about it for a bit we can adjust the
checksums without using this post_input stuff at all.  The crucial
point is that only the inner-most NAT-T SA needs to be considered
when adjusting checksums.  What's more, the checksum adjustment
comes down to a single u32 due to the linearity of IP checksums.

We just happen to have a spare u32 lying around in our skb structure :)
When ip_summed is set to CHECKSUM_NONE on input, the value of skb->csum
is currently unused.  All we have to do is to make that the checksum
adjustment and voila, there goes all the post_input and decap structures!

I've left in the decap data structures for now since it's intricately
woven into the sec_path stuff.  We can kill them later too.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-27 13:00:40 -08:00
..
Kconfig [NET]: move config options out to individual protocols 2005-07-11 21:13:56 -07:00
Makefile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xfrm_algo.c [NET]: Change some "if (x) BUG();" to "BUG_ON(x);" 2006-01-09 14:16:18 -08:00
xfrm_input.c [NET]: use __read_mostly on kmem_cache_t , DEFINE_SNMP_STAT pointers 2005-08-29 16:11:18 -07:00
xfrm_policy.c [IPSEC]: Kill post_input hook and do NAT-T in esp_input directly 2006-02-27 13:00:40 -08:00
xfrm_state.c [XFRM]: Eliminate refcounting confusion by creating __xfrm_state_put(). 2006-02-23 16:10:53 -08:00
xfrm_user.c [XFRM]: Eliminate refcounting confusion by creating __xfrm_state_put(). 2006-02-23 16:10:53 -08:00