diff options
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index c4f5e6fca17c..9ccefa5c5487 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -70,6 +70,7 @@ #include <net/checksum.h> #include <net/tcp_states.h> #include <linux/net_tstamp.h> +#include <net/smc.h> /* * This structure really needs to be cleaned up. @@ -239,6 +240,7 @@ struct sock_common { * @sk_wq: sock wait queue and async head * @sk_rx_dst: receive input route used by early demux * @sk_dst_cache: destination cache + * @sk_dst_pending_confirm: need to confirm neighbour * @sk_policy: flow policy * @sk_receive_queue: incoming packets * @sk_wmem_alloc: transmit queue bytes committed @@ -392,6 +394,8 @@ struct sock { struct sk_buff_head sk_write_queue; __s32 sk_peek_off; int sk_write_pending; + __u32 sk_dst_pending_confirm; + /* Note: 32bit hole on 64bit arches */ long sk_sndtimeo; struct timer_list sk_timer; __u32 sk_priority; @@ -543,8 +547,7 @@ static inline struct sock *sk_nulls_head(const struct hlist_nulls_head *head) static inline struct sock *sk_next(const struct sock *sk) { - return sk->sk_node.next ? - hlist_entry(sk->sk_node.next, struct sock, sk_node) : NULL; + return hlist_entry_safe(sk->sk_node.next, struct sock, sk_node); } static inline struct sock *sk_nulls_next(const struct sock *sk) @@ -986,6 +989,7 @@ struct request_sock_ops; struct timewait_sock_ops; struct inet_hashinfo; struct raw_hashinfo; +struct smc_hashinfo; struct module; /* @@ -1024,6 +1028,7 @@ struct proto { int (*getsockopt)(struct sock *sk, int level, int optname, char __user *optval, int __user *option); + void (*keepalive)(struct sock *sk, int valbool); #ifdef CONFIG_COMPAT int (*compat_setsockopt)(struct sock *sk, int level, @@ -1093,6 +1098,7 @@ struct proto { struct inet_hashinfo *hashinfo; struct udp_table *udp_table; struct raw_hashinfo *raw_hash; + struct smc_hashinfo *smc_hash; } h; struct module *owner; @@ -1531,7 +1537,7 @@ void sock_efree(struct sk_buff *skb); #ifdef CONFIG_INET void sock_edemux(struct sk_buff *skb); #else -#define sock_edemux(skb) sock_efree(skb) +#define sock_edemux sock_efree #endif int sock_setsockopt(struct socket *sock, int level, int op, @@ -1761,6 +1767,7 @@ static inline void dst_negative_advice(struct sock *sk) if (ndst != dst) { rcu_assign_pointer(sk->sk_dst_cache, ndst); sk_tx_queue_clear(sk); + sk->sk_dst_pending_confirm = 0; } } } @@ -1771,6 +1778,7 @@ __sk_dst_set(struct sock *sk, struct dst_entry *dst) struct dst_entry *old_dst; sk_tx_queue_clear(sk); + sk->sk_dst_pending_confirm = 0; /* * This can be called while sk is owned by the caller only, * with no state that can be checked in a rcu_dereference_check() cond @@ -1786,6 +1794,7 @@ sk_dst_set(struct sock *sk, struct dst_entry *dst) struct dst_entry *old_dst; sk_tx_queue_clear(sk); + sk->sk_dst_pending_confirm = 0; old_dst = xchg((__force struct dst_entry **)&sk->sk_dst_cache, dst); dst_release(old_dst); } @@ -1806,6 +1815,26 @@ struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie); struct dst_entry *sk_dst_check(struct sock *sk, u32 cookie); +static inline void sk_dst_confirm(struct sock *sk) +{ + if (!sk->sk_dst_pending_confirm) + sk->sk_dst_pending_confirm = 1; +} + +static inline void sock_confirm_neigh(struct sk_buff *skb, struct neighbour *n) +{ + if (skb_get_dst_pending_confirm(skb)) { + struct sock *sk = skb->sk; + unsigned long now = jiffies; + + /* avoid dirtying neighbour */ + if (n->confirmed != now) + n->confirmed = now; + if (sk && sk->sk_dst_pending_confirm) + sk->sk_dst_pending_confirm = 0; + } +} + bool sk_mc_loop(struct sock *sk); static inline bool sk_can_gso(const struct sock *sk) |