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authorDavid Howells <dhowells@redhat.com>2017-11-24 10:18:41 +0000
committerDavid Howells <dhowells@redhat.com>2017-11-24 10:18:41 +0000
commita158bdd3247b9656df36ba133235fff702e9fdc3 (patch)
tree225fbe76860a798696021258c6620ae52faab75c /net/rxrpc/conn_client.c
parent4812417894770f8c13e5dd8a66479ae44f4b01ff (diff)
downloadlinux-a158bdd3247b9656df36ba133235fff702e9fdc3.tar.bz2
rxrpc: Fix call timeouts
Fix the rxrpc call expiration timeouts and make them settable from userspace. By analogy with other rx implementations, there should be three timeouts: (1) "Normal timeout" This is set for all calls and is triggered if we haven't received any packets from the peer in a while. It is measured from the last time we received any packet on that call. This is not reset by any connection packets (such as CHALLENGE/RESPONSE packets). If a service operation takes a long time, the server should generate PING ACKs at a duration that's substantially less than the normal timeout so is to keep both sides alive. This is set at 1/6 of normal timeout. (2) "Idle timeout" This is set only for a service call and is triggered if we stop receiving the DATA packets that comprise the request data. It is measured from the last time we received a DATA packet. (3) "Hard timeout" This can be set for a call and specified the maximum lifetime of that call. It should not be specified by default. Some operations (such as volume transfer) take a long time. Allow userspace to set/change the timeouts on a call with sendmsg, using a control message: RXRPC_SET_CALL_TIMEOUTS The data to the message is a number of 32-bit words, not all of which need be given: u32 hard_timeout; /* sec from first packet */ u32 idle_timeout; /* msec from packet Rx */ u32 normal_timeout; /* msec from data Rx */ This can be set in combination with any other sendmsg() that affects a call. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net/rxrpc/conn_client.c')
-rw-r--r--net/rxrpc/conn_client.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/rxrpc/conn_client.c b/net/rxrpc/conn_client.c
index cfb997593da9..97f6a8de4845 100644
--- a/net/rxrpc/conn_client.c
+++ b/net/rxrpc/conn_client.c
@@ -85,8 +85,8 @@
__read_mostly unsigned int rxrpc_max_client_connections = 1000;
__read_mostly unsigned int rxrpc_reap_client_connections = 900;
-__read_mostly unsigned int rxrpc_conn_idle_client_expiry = 2 * 60 * HZ;
-__read_mostly unsigned int rxrpc_conn_idle_client_fast_expiry = 2 * HZ;
+__read_mostly unsigned long rxrpc_conn_idle_client_expiry = 2 * 60 * HZ;
+__read_mostly unsigned long rxrpc_conn_idle_client_fast_expiry = 2 * HZ;
/*
* We use machine-unique IDs for our client connections.