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sfc: batch up RX delivery

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Improves packet rate of 1-byte UDP receives by up to 10%.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Edward Cree
2018-07-02 16:12:53 +01:00
committed by David S. Miller
parent f6ad8c1bcd
commit e090bfb9f1
3 changed files with 21 additions and 1 deletions
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12
drivers/net/ethernet/sfc/efx.c
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@@ -264,11 +264,17 @@ static int efx_check_disabled(struct efx_nic *efx)
static int efx_process_channel(struct efx_channel *channel, int budget)
{
struct efx_tx_queue *tx_queue;
struct list_head rx_list;
int spent;
if (unlikely(!channel->enabled))
return 0;
/* Prepare the batch receive list */
EFX_WARN_ON_PARANOID(channel->rx_list != NULL);
INIT_LIST_HEAD(&rx_list);
channel->rx_list = &rx_list;
efx_for_each_channel_tx_queue(tx_queue, channel) {
tx_queue->pkts_compl = 0;
tx_queue->bytes_compl = 0;
@@ -291,6 +297,10 @@ static int efx_process_channel(struct efx_channel *channel, int budget)
}
}
/* Receive any packets we queued up */
netif_receive_skb_list(channel->rx_list);
channel->rx_list = NULL;
return spent;
}
@@ -555,6 +565,8 @@ static int efx_probe_channel(struct efx_channel *channel)
goto fail;
}
channel->rx_list = NULL;
return 0;
fail: