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openwrt-xburst/target/linux/ar71xx/files/drivers/net/ag71xx
juhosg bb14a2f07c ar71xx: ag71xx: make switch register access atomic
Reading of the PHY registers occasionally returns with bogus values
under heavy load. This misleads the PHY driver and thus causes false
link/speed change notifications which leads to performance loss.

This is easily noticable during an iperf session:

...
[  3] 52.0-53.0 sec  11.3 MBytes  94.4 Mbits/sec
[  3] 53.0-54.0 sec  11.4 MBytes  95.4 Mbits/sec
eth1: link down
br-lan: port 2(eth1) entering forwarding state
eth1: link up (100Mbps/Full duplex)
br-lan: port 2(eth1) entering forwarding state
br-lan: port 2(eth1) entering forwarding state
[  3] 54.0-55.0 sec  6.75 MBytes  56.6 Mbits/sec
[  3] 55.0-56.0 sec  0.00 Bytes  0.00 bits/sec
[  3] 56.0-57.0 sec  10.5 MBytes  88.1 Mbits/sec
...
[  3] 169.0-170.0 sec  11.4 MBytes  95.4 Mbits/sec
[  3] 170.0-171.0 sec  11.4 MBytes  95.4 Mbits/sec
eth1: link up (10Mbps/Half duplex)
[  3] 171.0-172.0 sec  7.63 MBytes  64.0 Mbits/sec
[  3] 172.0-173.0 sec  9.38 MBytes  78.6 Mbits/sec
eth1: link up (100Mbps/Full duplex)
[  3] 173.0-174.0 sec  11.3 MBytes  94.4 Mbits/sec
[  3] 174.0-175.0 sec  11.4 MBytes  95.4 Mbits/sec

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26856 3c298f89-4303-0410-b956-a3cf2f4a3e73
2011-05-08 16:32:53 +00:00
..
ag71xx_ar7240.c ar71xx: ag71xx: make switch register access atomic 2011-05-08 16:32:53 +00:00
ag71xx_ar8216.c ar71xx: fix up alignment handling 2010-04-15 23:31:17 +00:00
ag71xx_debugfs.c ar71xx: ag71xx: fix build error if debugfs is enabled 2011-05-08 13:30:26 +00:00
ag71xx_ethtool.c ar71xx: add dummy debugfs support for the ag71xx driver 2010-01-04 14:28:25 +00:00
ag71xx_main.c ar71xx: ag71xx: add timestamps to ag71xx_buf 2011-05-07 12:40:28 +00:00
ag71xx_mdio.c ar71xx: only allow internal access to the ar7240 switch, export the MDIO bus behind the switch instead 2011-04-02 00:47:29 +00:00
ag71xx_phy.c ar71xx: ag71xx: fix section mismatch warnings 2011-05-08 13:30:36 +00:00
ag71xx.h ar71xx: ag71xx: add timestamps to ag71xx_buf 2011-05-07 12:40:28 +00:00
Kconfig [ar71xx] wrt400n: lan ports don't need the ar8216 workaround 2010-03-26 19:09:11 +00:00
Makefile ar71xx: add a new driver for the ar7240 switch using swconfig. 2010-08-16 19:21:57 +00:00