diff options
author | David Miller <davem@davemloft.net> | 2017-11-28 23:45:44 +0300 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2017-11-30 17:54:26 +0300 |
commit | b6ca8bd5a9198c70c48297390723e4e56bd6e879 (patch) | |
tree | 11d7a2c8f9dcdeb28582721da6fcb0705837db25 /drivers/virt | |
parent | 45b018beddb631fb9a0ecbc3ba103521b03c4c80 (diff) | |
download | linux-b6ca8bd5a9198c70c48297390723e4e56bd6e879.tar.xz |
xfrm: Move child route linkage into xfrm_dst.
XFRM bundle child chains look like this:
xdst1 --> xdst2 --> xdst3 --> path_dst
All of xdstN are xfrm_dst objects and xdst->u.dst.xfrm is non-NULL.
The final child pointer in the chain, here called 'path_dst', is some
other kind of route such as an ipv4 or ipv6 one.
The xfrm output path pops routes, one at a time, via the child
pointer, until we hit one which has a dst->xfrm pointer which
is NULL.
We can easily preserve the above mechanisms with child sitting
only in the xfrm_dst structure. All children in the chain
before we break out of the xfrm_output() loop have dst->xfrm
non-NULL and are therefore xfrm_dst objects.
Since we break out of the loop when we find dst->xfrm NULL, we
will not try to dereference 'dst' as if it were an xfrm_dst.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/virt')
0 files changed, 0 insertions, 0 deletions