xfrm: make aead_len() return unsigned int
Key lengths can't be negative.
Comparison with nla_len() is left signed just in case negative value
can sneak in there.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 2bfbd91..32c67b8 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -84,7 +84,7 @@ static int verify_aead(struct nlattr **attrs)
return 0;
algp = nla_data(rt);
- if (nla_len(rt) < aead_len(algp))
+ if (nla_len(rt) < (int)aead_len(algp))
return -EINVAL;
algp->alg_name[sizeof(algp->alg_name) - 1] = '\0';