As promised, some more comments:
1) Please, can you split out seperate patch for changes
to net/ipv4/xfrm_user.c? They are independant.
Kunihiro sent me identical patch, so please could you
add him to credits in comment? Thank you.
2) I believe that net/ipv6/xfrm_policy.c is another area
for more code sharing.
Any time that I see removal of 'static', it is clue to
me :-)
Short term you can do as I suggested for secpath_cachep
issue, that is to move this new code to net/ipv4/xfrm_policy.c
as it is, conditionalized by CONFIG_IPV6 || CONFIG_IPV6_MODULE.
Later we can work on increased code sharing here.
3) I noticed comment above transformation from
explicit dst->output() call to dst_output().
It is not IPSEC issue, rather I believe that entire tree should
have this conversion eventually. The concept of stackable
destination cache entries is a generic one.
4) I believe some module symbol exports are missing to handle
ipv6 as module.
For example, for skb_ah_walk and skb_esp_walk.
The rest of code looks fine to me.
Now is not the time to get picky about small details, let us only get
first draft basically correct.
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