netdev - Re: [PATCH net-next] net: export netdev_stats_to

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Date:	Tue, 6 Mar 2012 12:38:50 +0800
From:	Junchang Wang <junchangwang@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net: export netdev_stats_to_stats64

> Some drivers use internal netdev stats member to store part of their
> stats, yet advertize ndo_get_stats64() to implement some 64bit fields.
>
> Allow them to use netdev_stats_to_stats64() helper to make the copy of
> netdev stats before they compute their 64bit counters.
>
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>

Hi Eric,
And I think we can add a netdev_stats_add_to_stats64() helper to avoid
following duplicate code. Is that acceptable? Thanks.

drivers/net/bonding/bond_main.c
                stats->rx_packets += sstats->rx_packets;
                stats->rx_bytes += sstats->rx_bytes;
                stats->rx_errors += sstats->rx_errors;
                stats->rx_dropped += sstats->rx_dropped;

                stats->tx_packets += sstats->tx_packets;
                stats->tx_bytes += sstats->tx_bytes;
                stats->tx_errors += sstats->tx_errors;
                stats->tx_dropped += sstats->tx_dropped;

                stats->multicast += sstats->multicast;
                stats->collisions += sstats->collisions;

                stats->rx_length_errors += sstats->rx_length_errors;
                stats->rx_over_errors += sstats->rx_over_errors;
                stats->rx_crc_errors += sstats->rx_crc_errors;
                stats->rx_frame_errors += sstats->rx_frame_errors;
                stats->rx_fifo_errors += sstats->rx_fifo_errors;
                stats->rx_missed_errors += sstats->rx_missed_errors;

                stats->tx_aborted_errors += sstats->tx_aborted_errors;
                stats->tx_carrier_errors += sstats->tx_carrier_errors;
                stats->tx_fifo_errors += sstats->tx_fifo_errors;
                stats->tx_heartbeat_errors += sstats->tx_heartbeat_errors;
                stats->tx_window_errors += sstats->tx_window_errors;

-- 
--Junchang
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