1 files changed, 21 insertions, 20 deletions

diff --git a/include/net/ip.h b/include/net/ip.h
index 9b9ca2839399..1a98f1ca1638 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -100,24 +100,20 @@ int igmp_mc_init(void);
  *      Functions provided by ip.c
  */
 
-int ip_build_and_send_pkt(struct sk_buff *skb, struct sock *sk,
+int ip_build_and_send_pkt(struct sk_buff *skb, const struct sock *sk,
                           __be32 saddr, __be32 daddr,
                           struct ip_options_rcu *opt);
 int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
            struct net_device *orig_dev);
 int ip_local_deliver(struct sk_buff *skb);
 int ip_mr_input(struct sk_buff *skb);
-int ip_output(struct sock *sk, struct sk_buff *skb);
-int ip_mc_output(struct sock *sk, struct sk_buff *skb);
-int ip_do_fragment(struct sock *sk, struct sk_buff *skb,
-                   int (*output)(struct sock *, struct sk_buff *));
+int ip_output(struct net *net, struct sock *sk, struct sk_buff *skb);
+int ip_mc_output(struct net *net, struct sock *sk, struct sk_buff *skb);
+int ip_do_fragment(struct net *net, struct sock *sk, struct sk_buff *skb,
+                   int (*output)(struct net *, struct sock *, struct sk_buff *));
 void ip_send_check(struct iphdr *ip);
-int __ip_local_out(struct sk_buff *skb);
-int ip_local_out_sk(struct sock *sk, struct sk_buff *skb);
-static inline int ip_local_out(struct sk_buff *skb)
-{
-        return ip_local_out_sk(skb->sk, skb);
-}
+int __ip_local_out(struct net *net, struct sock *sk, struct sk_buff *skb);
+int ip_local_out(struct net *net, struct sock *sk, struct sk_buff *skb);
 
 int ip_queue_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl);
 void ip_init(void);
@@ -282,10 +278,12 @@ int ip_decrease_ttl(struct iphdr *iph)
 }
 
 static inline
-int ip_dont_fragment(struct sock *sk, struct dst_entry *dst)
+int ip_dont_fragment(const struct sock *sk, const struct dst_entry *dst)
 {
-        return  inet_sk(sk)->pmtudisc == IP_PMTUDISC_DO ||
-                (inet_sk(sk)->pmtudisc == IP_PMTUDISC_WANT &&
+        u8 pmtudisc = READ_ONCE(inet_sk(sk)->pmtudisc);
+
+        return  pmtudisc == IP_PMTUDISC_DO ||
+                (pmtudisc == IP_PMTUDISC_WANT &&
                  !(dst_metric_locked(dst, RTAX_MTU)));
 }
 
@@ -321,12 +319,15 @@ static inline unsigned int ip_dst_mtu_maybe_forward(const struct dst_entry *dst,
 
 static inline unsigned int ip_skb_dst_mtu(const struct sk_buff *skb)
 {
-        if (!skb->sk || ip_sk_use_pmtu(skb->sk)) {
+        struct sock *sk = skb->sk;
+
+        if (!sk || !sk_fullsock(sk) || ip_sk_use_pmtu(sk)) {
                 bool forwarding = IPCB(skb)->flags & IPSKB_FORWARDED;
+
                 return ip_dst_mtu_maybe_forward(skb_dst(skb), forwarding);
-        } else {
-                return min(skb_dst(skb)->dev->mtu, IP_MAX_MTU);
         }
+
+        return min(skb_dst(skb)->dev->mtu, IP_MAX_MTU);
 }
 
 u32 ip_idents_reserve(u32 hash, int segs);
@@ -505,11 +506,11 @@ static inline bool ip_defrag_user_in_between(u32 user,
         return user >= lower_bond && user <= upper_bond;
 }
 
-int ip_defrag(struct sk_buff *skb, u32 user);
+int ip_defrag(struct net *net, struct sk_buff *skb, u32 user);
 #ifdef CONFIG_INET
-struct sk_buff *ip_check_defrag(struct sk_buff *skb, u32 user);
+struct sk_buff *ip_check_defrag(struct net *net, struct sk_buff *skb, u32 user);
 #else
-static inline struct sk_buff *ip_check_defrag(struct sk_buff *skb, u32 user)
+static inline struct sk_buff *ip_check_defrag(struct net *net, struct sk_buff *skb, u32 user)
 {
         return skb;
 }