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Commit 01fd0742 authored by David Howells's avatar David Howells
Browse files

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: default avatarDavid Howells <dhowells@redhat.com>
parent 89a80ed4

net/rxrpc/input.c

+5 −3
Original line number Diff line number Diff line
@@ -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));