diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2021-09-30 14:49:21 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-09-30 14:49:21 -0700 |
| commit | dd9a887b35b01d7027f974f5e7936f1410ab51ca (patch) | |
| tree | 4a827b3e88fd896de1408c26ebebc2535b14750a /include/net/sock.h | |
| parent | b05173028cc52384be42dcf81abdb4133caccfa5 (diff) | |
| parent | 4de593fb965fc2bd11a0b767e0c65ff43540a6e4 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
drivers/net/phy/bcm7xxx.c
d88fd1b546ff ("net: phy: bcm7xxx: Fixed indirect MMD operations")
f68d08c437f9 ("net: phy: bcm7xxx: Add EPHY entry for 72165")
net/sched/sch_api.c
b193e15ac69d ("net: prevent user from passing illegal stab size")
69508d43334e ("net_sched: Use struct_size() and flex_array_size() helpers")
Both cases trivial - adjacent code additions.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index c3af696258fe..b0724665fa39 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -486,8 +486,10 @@ struct sock { u8 sk_prefer_busy_poll; u16 sk_busy_poll_budget; #endif + spinlock_t sk_peer_lock; struct pid *sk_peer_pid; const struct cred *sk_peer_cred; + long sk_rcvtimeo; ktime_t sk_stamp; #if BITS_PER_LONG==32 @@ -1645,7 +1647,36 @@ void release_sock(struct sock *sk); SINGLE_DEPTH_NESTING) #define bh_unlock_sock(__sk) spin_unlock(&((__sk)->sk_lock.slock)) -bool lock_sock_fast(struct sock *sk) __acquires(&sk->sk_lock.slock); +bool __lock_sock_fast(struct sock *sk) __acquires(&sk->sk_lock.slock); + +/** + * lock_sock_fast - fast version of lock_sock + * @sk: socket + * + * This version should be used for very small section, where process wont block + * return false if fast path is taken: + * + * sk_lock.slock locked, owned = 0, BH disabled + * + * return true if slow path is taken: + * + * sk_lock.slock unlocked, owned = 1, BH enabled + */ +static inline bool lock_sock_fast(struct sock *sk) +{ + /* The sk_lock has mutex_lock() semantics here. */ + mutex_acquire(&sk->sk_lock.dep_map, 0, 0, _RET_IP_); + + return __lock_sock_fast(sk); +} + +/* fast socket lock variant for caller already holding a [different] socket lock */ +static inline bool lock_sock_fast_nested(struct sock *sk) +{ + mutex_acquire(&sk->sk_lock.dep_map, SINGLE_DEPTH_NESTING, 0, _RET_IP_); + + return __lock_sock_fast(sk); +} /** * unlock_sock_fast - complement of lock_sock_fast |