Commit 589a0c1e authored Apr 28, 2022 by David Howells

rxrpc: Track highest acked serial



Keep track of the highest DATA serial number that has been acked by the
peer for future purposes.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

parent 334dfbfc

net/rxrpc/ar-internal.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -690,6 +690,7 @@ struct rxrpc_call {
		rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */
		rxrpc_seq_t acks_lost_top; /* tx_top at the time lost-ack ping sent */
		rxrpc_serial_t acks_lost_ping; /* Serial number of probe ACK */
		rxrpc_serial_t acks_highest_serial; /* Highest serial number ACK'd */
		};

		/*

net/rxrpc/input.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -967,6 +967,10 @@ static void rxrpc_input_ack(struct rxrpc_call call, struct sk_buff skb)
		call->acks_first_seq = first_soft_ack;
		call->acks_prev_seq = prev_pkt;

		if (buf.ack.reason != RXRPC_ACK_PING &&
		after(acked_serial, call->acks_highest_serial))
		call->acks_highest_serial = acked_serial;

		/* Parse rwind and mtu sizes if provided. */
		if (buf.info.rxMTU)
		rxrpc_input_ackinfo(call, skb, &buf.info);