diff options
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 21569cf456ed54..15635074570025 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -243,7 +243,8 @@ struct cg_proto; * @sk_sndbuf: size of send buffer in bytes * @sk_flags: %SO_LINGER (l_onoff), %SO_BROADCAST, %SO_KEEPALIVE, * %SO_OOBINLINE settings, %SO_TIMESTAMPING settings - * @sk_no_check: %SO_NO_CHECK setting, whether or not checkup packets + * @sk_no_check_tx: %SO_NO_CHECK setting, set checksum in TX packets + * @sk_no_check_rx: allow zero checksum in RX packets * @sk_route_caps: route capabilities (e.g. %NETIF_F_TSO) * @sk_route_nocaps: forbidden route capabilities (e.g NETIF_F_GSO_MASK) * @sk_gso_type: GSO type (e.g. %SKB_GSO_TCPV4) @@ -371,7 +372,8 @@ struct sock { struct sk_buff_head sk_write_queue; kmemcheck_bitfield_begin(flags); unsigned int sk_shutdown : 2, - sk_no_check : 2, + sk_no_check_tx : 1, + sk_no_check_rx : 1, sk_userlocks : 4, sk_protocol : 8, sk_type : 16; @@ -1728,8 +1730,8 @@ sk_dst_get(struct sock *sk) rcu_read_lock(); dst = rcu_dereference(sk->sk_dst_cache); - if (dst) - dst_hold(dst); + if (dst && !atomic_inc_not_zero(&dst->__refcnt)) + dst = NULL; rcu_read_unlock(); return dst; } @@ -1766,9 +1768,11 @@ __sk_dst_set(struct sock *sk, struct dst_entry *dst) static inline void sk_dst_set(struct sock *sk, struct dst_entry *dst) { - spin_lock(&sk->sk_dst_lock); - __sk_dst_set(sk, dst); - spin_unlock(&sk->sk_dst_lock); + struct dst_entry *old_dst; + + sk_tx_queue_clear(sk); + old_dst = xchg((__force struct dst_entry **)&sk->sk_dst_cache, dst); + dst_release(old_dst); } static inline void @@ -1780,9 +1784,7 @@ __sk_dst_reset(struct sock *sk) static inline void sk_dst_reset(struct sock *sk) { - spin_lock(&sk->sk_dst_lock); - __sk_dst_reset(sk); - spin_unlock(&sk->sk_dst_lock); + sk_dst_set(sk, NULL); } struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie); |