linux/net/smc/smc_close.h
Karsten Graul fd57770dd1 net/smc: wait for pending work before clcsock release_sock
When the clcsock is already released using sock_release() and a pending
smc_listen_work accesses the clcsock than that will fail. Solve this
by canceling and waiting for the work to complete first. Because the
work holds the sock_lock it must make sure that the lock is not hold
before the new helper smc_clcsock_release() is invoked. And before the
smc_listen_work starts working check if the parent listen socket is
still valid, otherwise stop the work early.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-11 11:04:08 -07:00

29 lines
658 B
C

/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared Memory Communications over RDMA (SMC-R) and RoCE
*
* Socket Closing
*
* Copyright IBM Corp. 2016
*
* Author(s): Ursula Braun <ubraun@linux.vnet.ibm.com>
*/
#ifndef SMC_CLOSE_H
#define SMC_CLOSE_H
#include <linux/workqueue.h>
#include "smc.h"
#define SMC_MAX_STREAM_WAIT_TIMEOUT (2 * HZ)
#define SMC_CLOSE_SOCK_PUT_DELAY HZ
void smc_close_wake_tx_prepared(struct smc_sock *smc);
int smc_close_active(struct smc_sock *smc);
int smc_close_shutdown_write(struct smc_sock *smc);
void smc_close_init(struct smc_sock *smc);
void smc_clcsock_release(struct smc_sock *smc);
#endif /* SMC_CLOSE_H */