From: David Howells <dhowells@redhat.com>
Date: Thu, 29 Sep 2016 21:37:16 +0000 (+0100)
Subject: rxrpc: Request more ACKs in slow-start mode
X-Git-Tag: v4.9-rc1~127^2~34^2~1
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b112a67081e4b06652ecde588bf1d5778fe43d75;p=karo-tx-linux.git

rxrpc: Request more ACKs in slow-start mode

Set the request-ACK on more DATA packets whilst we're in slow start mode so
that we get sufficient ACKs back to supply information to configure the
window.

Signed-off-by: David Howells <dhowells@redhat.com>
---

diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c
index ac9a58b619a6..0d47db886f6e 100644
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c
@@ -284,6 +284,7 @@ int rxrpc_send_data_packet(struct rxrpc_call *call, struct sk_buff *skb,
 	 * ACKs if a DATA packet appears to have been lost.
 	 */
 	if (retrans ||
+	    call->cong_mode == RXRPC_CALL_SLOW_START ||
 	    (call->peer->rtt_usage < 3 && sp->hdr.seq & 1) ||
 	    ktime_before(ktime_add_ms(call->peer->rtt_last_req, 1000),
 			 ktime_get_real()))