tree 999f02b4bd00500bee3d131f55b30f3b1118e86d
parent d065c3c17dae95832badf6329512dd057c905890
author Peter Dunning <pdunning@solarflare.com> 1436346310 +0100
committer David S. Miller <davem@davemloft.net> 1436425240 -0700

sfc: Report TX completions to BQL after all TX events in interrupt

The limit for BQL is updated each time we call
netdev_tx_completed_queue.
Without this patch the BQL limit was updated for every TX event we
see.
The issue was that this only updated the limit to handle the data
we complete in two events as the first event wouldn't show that
enough traffic had been processed between them.

This was OK when interrupt moderation was off but not when it was
on as more data had to be completed in a single interrupt.

The patch changes this so that we do report the completion to BQL
only when all the TX events in the interrupt have been processed.

Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>