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device/ethernet: check and apply link negotiation properties

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This will allow to enforce link mode (autonegotiation, speed and duplex)
as specified in 802-3-ethernet properties.
This commit is contained in:
Francesco Giudici
2016-09-10 16:58:10 +02:00
parent 61faa5080e
commit 173819b73d
1 changed files with 93 additions and 0 deletions
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93
src/devices/nm-device-ethernet.c
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@@ -782,6 +782,97 @@ supplicant_interface_init (NMDeviceEthernet *self)
return TRUE;
}
static const char *
link_duplex_to_string (NMPlatformLinkDuplexType duplex)
{
switch (duplex) {
case NM_PLATFORM_LINK_DUPLEX_FULL:
return "full";
break;
case NM_PLATFORM_LINK_DUPLEX_HALF:
return "half";
break;
default:
return "unknown";
break;
}
}
static NMPlatformLinkDuplexType
link_duplex_to_platform (const char *duplex)
{
if (!duplex)
return NM_PLATFORM_LINK_DUPLEX_UNSET;
if (nm_streq (duplex, "full"))
return NM_PLATFORM_LINK_DUPLEX_FULL;
if (nm_streq (duplex, "half"))
return NM_PLATFORM_LINK_DUPLEX_HALF;
return NM_PLATFORM_LINK_DUPLEX_UNKNOWN;
}
static void
link_negotiation_set (NMDevice *device)
{
NMDeviceEthernet *self = NM_DEVICE_ETHERNET (device);
NMSettingWired *s_wired;
gboolean autoneg = TRUE, link_autoneg;
NMPlatformLinkDuplexType link_duplex, duplex = NM_PLATFORM_LINK_DUPLEX_UNSET;
guint32 speed = 0, link_speed;
s_wired = (NMSettingWired *) nm_device_get_applied_setting (device, NM_TYPE_SETTING_WIRED);
if (s_wired) {
autoneg = nm_setting_wired_get_auto_negotiate (s_wired);
if (!autoneg) {
speed = nm_setting_wired_get_speed (s_wired);
duplex = link_duplex_to_platform (nm_setting_wired_get_duplex (s_wired));
if (!speed && !duplex) {
_LOGD (LOGD_DEVICE, "set-link: ignore link negotiation");
return;
}
}
}
if (!nm_platform_ethtool_get_link_settings (NM_PLATFORM_GET, nm_device_get_iface (device),
&link_autoneg, &link_speed, &link_duplex)) {
_LOGW (LOGD_DEVICE, "set-link: unable to retrieve link negotiation");
return;
}
/* If link negotiation setting are already in place do nothing and return with success */
if (autoneg != link_autoneg)
goto set_link;
if (speed && (speed != link_speed))
goto set_link;
if (duplex && (duplex != link_duplex))
goto set_link;
_LOGW (LOGD_DEVICE, "set-link: link negotiation is already configured");
return;
set_link:
if (!nm_platform_ethtool_set_link_settings (NM_PLATFORM_GET,
nm_device_get_iface (device),
autoneg,
speed,
duplex)) {
_LOGW (LOGD_DEVICE, "set-link: failure to set link negotiation");
return;
}
if (autoneg)
_LOGD (LOGD_DEVICE, "set-link: configure autonegotiation");
else {
_LOGD (LOGD_DEVICE, "set-link: configure static negotiation (%u Mbit - %s duplex)",
speed ?: link_speed,
duplex ? link_duplex_to_string (duplex) : link_duplex_to_string (link_duplex));
}
}
static gboolean
pppoe_reconnect_delay (gpointer user_data)
{
@@ -807,6 +898,8 @@ act_stage1_prepare (NMDevice *dev, NMDeviceStateReason *reason)
if (ret != NM_ACT_STAGE_RETURN_SUCCESS)
return ret;
link_negotiation_set (dev);
if (!nm_device_hw_addr_set_cloned (dev, nm_device_get_applied_connection (dev), FALSE))
return NM_ACT_STAGE_RETURN_FAILURE;