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| author |   Claudiu Manoil <claudiu.manoil@freescale.com> | 2013-08-12 13:53:26 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-08-13 15:28:53 -0700 |
| commit | 23402bddf9e56eecb27bbd1e5467b3b79b3dbe58 (patch) | |
| tree | 26dc3784f50481c3ac8457abccd54bd7aec1748a /include | |
| parent | pptp: fix byte order warnings (diff) | |
| download | linux-dev-23402bddf9e56eecb27bbd1e5467b3b79b3dbe58.tar.xz linux-dev-23402bddf9e56eecb27bbd1e5467b3b79b3dbe58.zip | |
gianfar: Add flow control support
eTSEC has Rx and Tx flow control capabilities that may be enabled
through MACCFG1[Rx_Flow, Tx_Flow] bits. These bits must not be set
however when eTSEC is operated in Half-Duplex mode. Unfortunately,
the driver currently sets these bits unconditionally.
This patch adds the proper handling of the PAUSE frame capability
register bits by implementing the ethtool -A interface. When pause
autoneg is enabled, the controller uses the phy's capability to
negotiate PAUSE frame settings with the link partner and reconfigures
its Rx_Flow and Tx_Flow settings to match the capabilities of the
link partner. If pause autoneg is off, the PAUSE frame generation
may be forced manually (ethtool -A). Flow control is disabled by
default now.
This implementation is inspired by the tg3 driver.
Signed-off-by: Lutz Jaenicke <ljaenicke@innominate.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions