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rxrpc: Reduce ssthresh to peer's receive window

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When we receive an ACK from the peer that tells us what the peer's receive
window (rwind) is, we should reduce ssthresh to rwind if rwind is smaller
than ssthresh.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2016-09-30 09:33:27 +01:00
parent 8782def204
commit 0851115090
1 changed files with 2 additions and 0 deletions
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2
net/rxrpc/input.c
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@ -658,6 +658,8 @@ static void rxrpc_input_ackinfo(struct rxrpc_call *call, struct sk_buff *skb,
if (rwind > RXRPC_RXTX_BUFF_SIZE - 1) if (rwind > RXRPC_RXTX_BUFF_SIZE - 1)
rwind = RXRPC_RXTX_BUFF_SIZE - 1; rwind = RXRPC_RXTX_BUFF_SIZE - 1;
call->tx_winsize = rwind; call->tx_winsize = rwind;
if (call->cong_ssthresh > rwind)
call->cong_ssthresh = rwind;
mtu = min(ntohl(ackinfo->rxMTU), ntohl(ackinfo->maxMTU)); mtu = min(ntohl(ackinfo->rxMTU), ntohl(ackinfo->maxMTU));