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rxrpc: Track highest acked serial

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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
This commit is contained in:
David Howells 2022-04-28 08:30:47 +01:00
parent 334dfbfc5a
commit 589a0c1e0a
2 changed files with 5 additions and 0 deletions
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1
net/rxrpc/ar-internal.h
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@ -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 */
};
/*

4
net/rxrpc/input.c
View File

@ -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);