net: bcmgenet: fix throughtput regression

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[ Upstream commit 4092e6acf5 ]

This patch adds bcmgenet_tx_poll for the tx_rings. This can reduce the
interrupt load and send xmit in network stack on time. This also
separated for the completion of tx_ring16 from bcmgenet_poll.

The bcmgenet_tx_reclaim of tx_ring[{0,1,2,3}] operative by an interrupt
is to be not more than a certain number TxBDs. It is caused by too
slowly reclaiming the transmitted skb. Therefore, performance
degradation of xmit after 605ad7f ("tcp: refine TSO autosizing").

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

...

This commit is contained in:

Jaedon Shin 2015-02-28 11:48:26 +09:00 • committed by Sasha Levin

parent e2aaa2c053

commit 29db1c2ae7

2 changed files with 88 additions and 27 deletions

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113

drivers/net/ethernet/broadcom/genet/bcmgenet.c

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2

drivers/net/ethernet/broadcom/genet/bcmgenet.h

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