Ubiquiti loco xw eth0 bug
Aus Opennet
Version vom 29. April 2015, 22:05 Uhr von Matthias M (Diskussion | Beiträge)
Inhaltsverzeichnis |
Bug description
Some Ubiquiti loco xw have a hardware bug which results in an interface shutdown with now possibility to bring the interface without reboot. More details, see https://dev.openwrt.org/ticket/19085
Steps for building workaround
Find a way to detect hang of eth0
In general there are two places where uid of PHY is printed.
1. ag71xx_phy.c
function: static int ag71xx_phy_connect_multi(struct ag71xx *ag) .... DBG("%s: PHY found at %s, uid=%08x\n", dev_name(dev), dev_name(&ag->mii_bus->phy_map[phy_addr]->dev), ag->mii_bus->phy_map[phy_addr]->phy_id); dev_info(dev, "connected to PHY at %s [uid=%08x, driver=%s]\n", dev_name(&phydev->dev), phydev->phy_id, phydev->drv->name);
2. ag71xx_main.c
void ag71xx_link_adjust(struct ag71xx *ag) .... struct device *dev = &ag->pdev->dev; struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); struct phy_device *phydev = NULL; int phy_addr; int ret = 0; for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) { if (!(pdata->phy_mask & (1 << phy_addr))) continue; if (ag->mii_bus->phy_map[phy_addr] == NULL) continue; DBG("%s: PHY found at %s, uid=%08x\n", dev_name(dev), dev_name(&ag->mii_bus->phy_map[phy_addr]->dev), ag->mii_bus->phy_map[phy_addr]->phy_id); if (phydev == NULL) phydev = ag->mii_bus->phy_map[phy_addr]; } dev_info(dev, "connected to PHY at %s [uid=%08x, driver=%s]\n", dev_name(&phydev->dev), phydev->phy_id, phydev->drv->name);
Detection in ag71xx_link_adjust() in file ag71xx_main.c ist possible. See http://pastebin.com/0ze9iFcb for an example.
Example Log output
root@OpenWrt:/tmp# logread | grep PHY Sun Apr 26 21:09:48 2015 kern.info kernel: [ 6.160000] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:01 [uid=004dd023, driver=Generic PHY] (Opennet-Info1) Sun Apr 26 21:09:48 2015 kern.info kernel: [ 7.370000] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:01 [uid=004dd023, driver=Generic PHY] (Opennet-Info1) Sun Apr 26 21:09:55 2015 kern.info kernel: [ 20.240000] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:01 [uid=004dd023, driver=Generic PHY] (Opennet-Info1) Sun Apr 26 21:15:12 2015 kern.info kernel: [ 337.290000] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:01 [uid=004dd023, driver=Generic PHY] (Opennet-Info1) Sun Apr 26 21:15:14 2015 kern.info kernel: [ 339.300000] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:01 [uid=004dd023, driver=Generic PHY] (Opennet-Info1)
Find a way to reset eth0
...TODO...