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| author |   David Howells <dhowells@redhat.com> | 2014-02-07 18:58:44 +0000 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2014-02-26 17:25:06 +0000 |
| commit | 5873c0834f8896aa9da338b941035a2f8b29e99b (patch) | |
| tree | 4faf1ab1a7f95be86c5d9d775b82b6d01012c9a5 /net/rxrpc/ar-skbuff.c | |
| parent | af_rxrpc: Fix UDP MTU calculation from ICMP_FRAG_NEEDED (diff) | |
| download | linux-dev-5873c0834f8896aa9da338b941035a2f8b29e99b.tar.xz linux-dev-5873c0834f8896aa9da338b941035a2f8b29e99b.zip | |
af_rxrpc: Add sysctls for configuring RxRPC parameters
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>
Diffstat (limited to 'net/rxrpc/ar-skbuff.c')
| -rw-r--r-- | net/rxrpc/ar-skbuff.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/rxrpc/ar-skbuff.c b/net/rxrpc/ar-skbuff.c index de755e04d29c..af9f4fd2a365 100644 --- a/net/rxrpc/ar-skbuff.c +++ b/net/rxrpc/ar-skbuff.c @@ -83,6 +83,11 @@ static void rxrpc_hard_ACK_data(struct rxrpc_call *call, rxrpc_request_final_ACK(call); } else if (atomic_dec_and_test(&call->ackr_not_idle) && test_and_clear_bit(RXRPC_CALL_TX_SOFT_ACK, &call->flags)) { + /* We previously soft-ACK'd some received packets that have now + * been consumed, so send a hard-ACK if no more packets are + * immediately forthcoming to allow the transmitter to free up + * its Tx bufferage. + */ _debug("send Rx idle ACK"); __rxrpc_propose_ACK(call, RXRPC_ACK_IDLE, sp->hdr.serial, true); |