v2: fix unitialized variable buf reported by kbuild robot.
The xfrm replay logic is implemented via indirect calls.
xfrm_state struct holds a pointer to a
'struct xfrm_replay', which is one of several replay protection
backends.
XFRM then invokes the backend via state->repl->callback().
Due to retpoline all indirect calls have become a lot more
expensive. Fortunately, there are no 'replay modules', all are available
for direct calls.
This series removes the 'struct xfrm_replay' and adds replay
functions that can be called instead of the redirection.
Example:
- err = x->repl->overflow(x, skb);
+ err = xfrm_replay_overflow(x, skb);
Instead of a pointer to a struct with function pointers, xfrm_state
now holds an enum that tells the replay core what kind of replay
test is to be done.
Florian Westphal (6):
xfrm: replay: avoid xfrm replay notify indirection
xfrm: replay: get rid of duplicated notification code
xfrm: replay: remove advance indirection
xfrm: replay: remove recheck indirection
xfrm: replay: avoid replay indirection
xfrm: replay: remove last replay indirection
include/net/xfrm.h | 29 ++++----
net/xfrm/xfrm_input.c | 6 +-
net/xfrm/xfrm_output.c | 2 +-
net/xfrm/xfrm_replay.c | 189 +++++++++++++++++++++++++++----------------------
net/xfrm/xfrm_state.c | 2 +-
5 files changed, 125 insertions(+), 103 deletions(-)
