diff options
| -rw-r--r-- | Documentation/networking/rxrpc.txt | 10 | ||||
| -rw-r--r-- | include/net/af_rxrpc.h | 2 | ||||
| -rw-r--r-- | net/rxrpc/af_rxrpc.c | 25 |
3 files changed, 37 insertions, 0 deletions
diff --git a/Documentation/networking/rxrpc.txt b/Documentation/networking/rxrpc.txt index cd7303d7fa25..ff035a6418e3 100644 --- a/Documentation/networking/rxrpc.txt +++ b/Documentation/networking/rxrpc.txt @@ -1056,6 +1056,16 @@ The kernel interface functions are as follows: This value can be used to determine if the remote client has been restarted as it shouldn't change otherwise. + (*) Set the maxmimum lifespan on a call. + + void rxrpc_kernel_set_max_life(struct socket *sock, + struct rxrpc_call *call, + unsigned long hard_timeout) + + This sets the maximum lifespan on a call to hard_timeout (which is in + jiffies). In the event of the timeout occurring, the call will be + aborted and -ETIME or -ETIMEDOUT will be returned. + ======================= CONFIGURABLE PARAMETERS diff --git a/include/net/af_rxrpc.h b/include/net/af_rxrpc.h index 78c856cba4f5..c04602ca4a55 100644 --- a/include/net/af_rxrpc.h +++ b/include/net/af_rxrpc.h @@ -68,5 +68,7 @@ u32 rxrpc_kernel_get_epoch(struct socket *, struct rxrpc_call *); bool rxrpc_kernel_get_reply_time(struct socket *, struct rxrpc_call *, ktime_t *); bool rxrpc_kernel_call_is_complete(struct rxrpc_call *); +void rxrpc_kernel_set_max_life(struct socket *, struct rxrpc_call *, + unsigned long); #endif /* _NET_RXRPC_H */ diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c index ae8c5d7f3bf1..213935fbbbf7 100644 --- a/net/rxrpc/af_rxrpc.c +++ b/net/rxrpc/af_rxrpc.c @@ -443,6 +443,31 @@ void rxrpc_kernel_new_call_notification( } EXPORT_SYMBOL(rxrpc_kernel_new_call_notification); +/** + * rxrpc_kernel_set_max_life - Set maximum lifespan on a call + * @sock: The socket the call is on + * @call: The call to configure + * @hard_timeout: The maximum lifespan of the call in jiffies + * + * Set the maximum lifespan of a call. The call will end with ETIME or + * ETIMEDOUT if it takes longer than this. + */ +void rxrpc_kernel_set_max_life(struct socket *sock, struct rxrpc_call *call, + unsigned long hard_timeout) +{ + unsigned long now; + + mutex_lock(&call->user_mutex); + + now = jiffies; + hard_timeout += now; + WRITE_ONCE(call->expect_term_by, hard_timeout); + rxrpc_reduce_call_timer(call, hard_timeout, now, rxrpc_timer_set_for_hard); + + mutex_unlock(&call->user_mutex); +} +EXPORT_SYMBOL(rxrpc_kernel_set_max_life); + /* * connect an RxRPC socket * - this just targets it at a specific destination; no actual connection |