From 01fd0742248cfc99b3b0cba1e09e1c0ecb8658fa Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 13 Sep 2016 10:23:01 +0100 Subject: [PATCH] rxrpc: Allow tx_winsize to grow in response to an ACK Allow tx_winsize to grow when the ACK info packet shows a larger receive window at the other end rather than only permitting it to shrink. Signed-off-by: David Howells --- net/rxrpc/input.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c index 5958ef8ba2a0..8e529afcd6c1 100644 --- a/net/rxrpc/input.c +++ b/net/rxrpc/input.c @@ -333,14 +333,16 @@ static void rxrpc_input_ackinfo(struct rxrpc_call *call, struct sk_buff *skb, struct rxrpc_skb_priv *sp = rxrpc_skb(skb); struct rxrpc_peer *peer; unsigned int mtu; + u32 rwind = ntohl(ackinfo->rwind); _proto("Rx ACK %%%u Info { rx=%u max=%u rwin=%u jm=%u }", sp->hdr.serial, ntohl(ackinfo->rxMTU), ntohl(ackinfo->maxMTU), - ntohl(ackinfo->rwind), ntohl(ackinfo->jumbo_max)); + rwind, ntohl(ackinfo->jumbo_max)); - if (call->tx_winsize > ntohl(ackinfo->rwind)) - call->tx_winsize = ntohl(ackinfo->rwind); + if (rwind > RXRPC_RXTX_BUFF_SIZE - 1) + rwind = RXRPC_RXTX_BUFF_SIZE - 1; + call->tx_winsize = rwind; mtu = min(ntohl(ackinfo->rxMTU), ntohl(ackinfo->maxMTU)); -- 2.39.5