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af_rxrpc: Add sysctls for configuring RxRPC parameters

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Add sysctls for configuring RxRPC protocol handling, specifically controls on
delays before ack generation, the delay before resending a packet, the maximum
lifetime of a call and the expiration times of calls, connections and
transports that haven't been recently used.

More info added in Documentation/networking/rxrpc.txt.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
2014-02-07 18:58:44 +00:00
parent 6c9a2d3202
commit 5873c0834f
12 changed files with 273 additions and 27 deletions
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7
net/rxrpc/ar-output.c
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@@ -18,7 +18,10 @@
#include <net/af_rxrpc.h>
#include "ar-internal.h"
int rxrpc_resend_timeout = 4;
/*
* Time till packet resend (in jiffies).
*/
unsigned rxrpc_resend_timeout = 4 * HZ;
static int rxrpc_send_data(struct kiocb *iocb,
struct rxrpc_sock *rx,
@@ -487,7 +490,7 @@ static void rxrpc_queue_packet(struct rxrpc_call *call, struct sk_buff *skb,
ntohl(sp->hdr.serial), ntohl(sp->hdr.seq));
sp->need_resend = false;
sp->resend_at = jiffies + rxrpc_resend_timeout * HZ;
sp->resend_at = jiffies + rxrpc_resend_timeout;
if (!test_and_set_bit(RXRPC_CALL_RUN_RTIMER, &call->flags)) {
_debug("run timer");
call->resend_timer.expires = sp->resend_at;