xfrm: make xfrm_replay_state_esn_len() return unsigned int
Replay detection bitmaps can't have negative length.
Comparisons with nla_len() are left signed just in case negative value
can sneak in there.
Propagate unsignedness for code size savings:
add/remove: 0/0 grow/shrink: 0/5 up/down: 0/-38 (-38)
function old new delta
xfrm_state_construct 1802 1800 -2
xfrm_update_ae_params 295 289 -6
xfrm_state_migrate 1345 1339 -6
xfrm_replay_notify_esn 349 337 -12
xfrm_replay_notify_bmp 345 333 -12
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 5d5e11b..3cb618b 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -1779,7 +1779,7 @@
return sizeof(*alg) + ((alg->alg_key_len + 7) / 8);
}
-static inline int xfrm_replay_state_esn_len(struct xfrm_replay_state_esn *replay_esn)
+static inline unsigned int xfrm_replay_state_esn_len(struct xfrm_replay_state_esn *replay_esn)
{
return sizeof(*replay_esn) + replay_esn->bmp_len * sizeof(__u32);
}