| Message ID | 20210628215431.29156-1-vfedorenko@novek.ru |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [net] net: ipv6: fix return value of ip6_skb_dst_mtu | expand |
On 6/28/21 3:54 PM, Vadim Fedorenko wrote: > Commit 628a5c561890 ("[INET]: Add IP(V6)_PMTUDISC_RPOBE") introduced > ip6_skb_dst_mtu with return value of signed int which is inconsistent > with actually returned values. Also 2 users of this function actually > assign its value to unsigned int variable and only __xfrm6_output > assigns result of this function to signed variable but actually uses > as unsigned in further comparisons and calls. Change this function > to return unsigned int value. > > Fixes: 628a5c561890 ("[INET]: Add IP(V6)_PMTUDISC_RPOBE") > Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru> > --- > include/net/ip6_route.h | 2 +- > net/ipv6/xfrm6_output.c | 2 +- > 2 files changed, 2 insertions(+), 2 deletions(-) > Reviewed-by: David Ahern <dsahern@kernel.org>
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h index f51a118bfce8..b931e413b7a4 100644 --- a/include/net/ip6_route.h +++ b/include/net/ip6_route.h @@ -263,7 +263,7 @@ static inline bool ipv6_anycast_destination(const struct dst_entry *dst, int ip6_fragment(struct net *net, struct sock *sk, struct sk_buff *skb, int (*output)(struct net *, struct sock *, struct sk_buff *)); -static inline int ip6_skb_dst_mtu(struct sk_buff *skb) +static inline unsigned int ip6_skb_dst_mtu(struct sk_buff *skb) { struct ipv6_pinfo *np = skb->sk && !dev_recursion_level() ? inet6_sk(skb->sk) : NULL; diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c index 57fa27c1cdf9..d0d280077721 100644 --- a/net/ipv6/xfrm6_output.c +++ b/net/ipv6/xfrm6_output.c @@ -49,7 +49,7 @@ static int __xfrm6_output(struct net *net, struct sock *sk, struct sk_buff *skb) { struct dst_entry *dst = skb_dst(skb); struct xfrm_state *x = dst->xfrm; - int mtu; + unsigned int mtu; bool toobig; #ifdef CONFIG_NETFILTER
Commit 628a5c561890 ("[INET]: Add IP(V6)_PMTUDISC_RPOBE") introduced ip6_skb_dst_mtu with return value of signed int which is inconsistent with actually returned values. Also 2 users of this function actually assign its value to unsigned int variable and only __xfrm6_output assigns result of this function to signed variable but actually uses as unsigned in further comparisons and calls. Change this function to return unsigned int value. Fixes: 628a5c561890 ("[INET]: Add IP(V6)_PMTUDISC_RPOBE") Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru> --- include/net/ip6_route.h | 2 +- net/ipv6/xfrm6_output.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)