Re: [PATCH net-next v2] e1000e: Be drop monitor friendly
From: Florian Fainelli
Date: Fri Aug 25 2017 - 12:48:01 EST
On 08/24/2017 08:58 PM, Florian Fainelli wrote:
> e1000_put_txbuf() cleans up the successfully transmitted TX packets,
> e1000e_tx_hwtstamp_work() also does the successfully completes the
> timestamped TX packets, e1000_clean_rx_ring() cleans up the RX ring and
> e1000_remove() cleans up the timestampted packets. None of these
> functions should be reporting dropped packets, so make them use
> dev_consume_skb_any() to be drop monitor friendly.
>
> Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
> ---
> drivers/net/ethernet/intel/e1000e/netdev.c | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
> index 327dfe5bedc0..a90e459c5b8a 100644
> --- a/drivers/net/ethernet/intel/e1000e/netdev.c
> +++ b/drivers/net/ethernet/intel/e1000e/netdev.c
> @@ -1085,7 +1085,7 @@ static void e1000_put_txbuf(struct e1000_ring *tx_ring,
> buffer_info->dma = 0;
> }
> if (buffer_info->skb) {
> - dev_kfree_skb_any(buffer_info->skb);
> + dev_consume_skb_any(buffer_info->skb);
> buffer_info->skb = NULL;
> }
> buffer_info->time_stamp = 0;
> @@ -1199,7 +1199,7 @@ static void e1000e_tx_hwtstamp_work(struct work_struct *work)
> wmb(); /* force write prior to skb_tstamp_tx */
>
> skb_tstamp_tx(skb, &shhwtstamps);
> - dev_kfree_skb_any(skb);
> + dev_consume_skb_any(skb);
> } else if (time_after(jiffies, adapter->tx_hwtstamp_start
> + adapter->tx_timeout_factor * HZ)) {
> dev_kfree_skb_any(adapter->tx_hwtstamp_skb);
> @@ -1716,7 +1716,7 @@ static void e1000_clean_rx_ring(struct e1000_ring *rx_ring)
> }
>
> if (buffer_info->skb) {
> - dev_kfree_skb(buffer_info->skb);
> + dev_consume_skb_any(buffer_info->skb);
This one is not actually needed since dev_kfree_skb() is an alias for
consume_skb().
> buffer_info->skb = NULL;
> }
>
> @@ -1734,7 +1734,7 @@ static void e1000_clean_rx_ring(struct e1000_ring *rx_ring)
>
> /* there also may be some cached data from a chained receive */
> if (rx_ring->rx_skb_top) {
> - dev_kfree_skb(rx_ring->rx_skb_top);
> + dev_consume_skb_any(rx_ring->rx_skb_top);
Same here.
I will make a repost of this patch later, Jeff please drop it if you
have it queued already, thanks!
--
Florian