hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

rxrpc: Reduce the number of PING ACKs sent 

We don't want to send a PING ACK for every new incoming call as that just
adds to the network traffic.  Instead, we send a PING ACK to the first
three that we receive and then once per second thereafter.

This could probably be made adjustable in future.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2016-09-22 00:29:32 +01:00
parent 0d4b103c00
commit fc943f6777
2 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
net/rxrpc/input.c
View File

@ -44,7 +44,10 @@ static void rxrpc_send_ping(struct rxrpc_call *call, struct sk_buff *skb,
int skew) int skew)
{ {
struct rxrpc_skb_priv *sp = rxrpc_skb(skb); struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
ktime_t now = skb->tstamp;
if (call->peer->rtt_usage < 3 ||
ktime_before(ktime_add_ms(call->peer->rtt_last_req, 1000), now))
rxrpc_propose_ACK(call, RXRPC_ACK_PING, skew, sp->hdr.serial, rxrpc_propose_ACK(call, RXRPC_ACK_PING, skew, sp->hdr.serial,
true, true); true, true);
} }