diff options
Diffstat (limited to 'Documentation/networking/rxrpc.txt')
| -rw-r--r-- | Documentation/networking/rxrpc.txt | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/Documentation/networking/rxrpc.txt b/Documentation/networking/rxrpc.txt index 605e00cdd6be..c9d052e0cf51 100644 --- a/Documentation/networking/rxrpc.txt +++ b/Documentation/networking/rxrpc.txt @@ -661,7 +661,7 @@ A server would be set up to accept operations in the following manner: setsockopt(server, SOL_RXRPC, RXRPC_SECURITY_KEYRING, "AFSkeys", 7); The keyring can be manipulated after it has been given to the socket. This - permits the server to add more keys, replace keys, etc. whilst it is live. + permits the server to add more keys, replace keys, etc. while it is live. (3) A local address must then be bound: @@ -1032,7 +1032,7 @@ The kernel interface functions are as follows: struct sockaddr_rxrpc *srx, struct key *key); - This attempts to partially reinitialise a call and submit it again whilst + This attempts to partially reinitialise a call and submit it again while reusing the original call's Tx queue to avoid the need to repackage and re-encrypt the data to be sent. call indicates the call to retry, srx the new address to send it to and key the encryption key to use for signing or @@ -1056,18 +1056,23 @@ The kernel interface functions are as follows: u32 rxrpc_kernel_check_life(struct socket *sock, struct rxrpc_call *call); + void rxrpc_kernel_probe_life(struct socket *sock, + struct rxrpc_call *call); - This returns a number that is updated when ACKs are received from the peer - (notably including PING RESPONSE ACKs which we can elicit by sending PING - ACKs to see if the call still exists on the server). The caller should - compare the numbers of two calls to see if the call is still alive after - waiting for a suitable interval. + The first function returns a number that is updated when ACKs are received + from the peer (notably including PING RESPONSE ACKs which we can elicit by + sending PING ACKs to see if the call still exists on the server). The + caller should compare the numbers of two calls to see if the call is still + alive after waiting for a suitable interval. This allows the caller to work out if the server is still contactable and - if the call is still alive on the server whilst waiting for the server to + if the call is still alive on the server while waiting for the server to process a client operation. - This function may transmit a PING ACK. + The second function causes a ping ACK to be transmitted to try to provoke + the peer into responding, which would then cause the value returned by the + first function to change. Note that this must be called in TASK_RUNNING + state. (*) Get reply timestamp. @@ -1144,14 +1149,14 @@ adjusted through sysctls in /proc/net/rxrpc/: (*) connection_expiry The amount of time in seconds after a connection was last used before we - remove it from the connection list. Whilst a connection is in existence, + remove it from the connection list. While a connection is in existence, it serves as a placeholder for negotiated security; when it is deleted, the security must be renegotiated. (*) transport_expiry The amount of time in seconds after a transport was last used before we - remove it from the transport list. Whilst a transport is in existence, it + remove it from the transport list. While a transport is in existence, it serves to anchor the peer data and keeps the connection ID counter. (*) rxrpc_rx_window_size |