* 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,
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_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);
}
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)));
}
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);