diff options
| author | Ursula Braun <ubraun@linux.vnet.ibm.com> | 2017-04-10 15:58:01 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-04-12 06:01:14 +0300 |
| commit | 46c28dbd4c23c3f7fa37f5ea48772af79c9cc40e (patch) | |
| tree | 46c18228dafa080d9a7c9ee72edd7ea4f7a6e6b3 /net/smc/smc_close.h | |
| parent | 90e9517ed9615f9fb23fbef7d279f81e6c5c08b2 (diff) | |
| download | linux-46c28dbd4c23c3f7fa37f5ea48772af79c9cc40e.tar.xz | |
net/smc: no socket state changes in tasklet context
Several state changes occur during SMC socket closing. Currently
state changes triggered locally occur in process context with
lock_sock() taken while state changes triggered by peer occur in
tasklet context with bh_lock_sock() taken. bh_lock_sock() does not
wait till a lock_sock(() task in process context is finished. This
may lead to races in socket state transitions resulting in dangling
SMC-sockets, or it may lead to duplicate SMC socket freeing.
This patch introduces a closing worker to run all state changes under
lock_sock().
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_close.h')
| -rw-r--r-- | net/smc/smc_close.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/smc/smc_close.h b/net/smc/smc_close.h index bc9a2df3633c..4a3d99a8d7cb 100644 --- a/net/smc/smc_close.h +++ b/net/smc/smc_close.h @@ -21,8 +21,8 @@ void smc_close_wake_tx_prepared(struct smc_sock *smc); void smc_close_active_abort(struct smc_sock *smc); int smc_close_active(struct smc_sock *smc); -void smc_close_passive_received(struct smc_sock *smc); void smc_close_sock_put_work(struct work_struct *work); int smc_close_shutdown_write(struct smc_sock *smc); +void smc_close_init(struct smc_sock *smc); #endif /* SMC_CLOSE_H */ |