device: add support to configure eee

Add support for configurable EEE option i.e. energy efficient ethernet.

The option can be configured by adding the config for the device in the
network uci config. Example:

config device
	option name 'eth0'
	option eee '1'

Signed-off-by: Rahul Thakur <rahul.thakur@iopsys.eu>

3 files changed, 32 insertions, 0 deletions

diff --git a/device.c b/device.c
index 3ad1563..e26edbb 100644
--- a/device.c
+++ b/device.c
@@ -74,6 +74,7 @@ static const struct blobmsg_policy dev_attrs[__DEV_ATTR_MAX] = {
 	[DEV_ATTR_AUTONEG] = { .name = "autoneg", .type = BLOBMSG_TYPE_BOOL },
 	[DEV_ATTR_GRO] = { .name = "gro", .type = BLOBMSG_TYPE_BOOL },
 	[DEV_ATTR_MASTER] = { .name = "conduit", .type = BLOBMSG_TYPE_STRING },
+	[DEV_ATTR_EEE] = { .name = "eee", .type = BLOBMSG_TYPE_BOOL },
 };
 
 const struct uci_blob_param_list device_attr_list = {
@@ -299,6 +300,7 @@ device_merge_settings(struct device *dev, struct device_settings *n)
 	n->txpause = s->flags & DEV_OPT_TXPAUSE ? s->txpause : os->txpause;
 	n->autoneg = s->flags & DEV_OPT_AUTONEG ? s->autoneg : os->autoneg;
 	n->gro = s->flags & DEV_OPT_GRO ? s->gro : os->gro;
+	n->eee = s->flags & DEV_OPT_EEE ? s->eee : os->eee;
 	n->master_ifindex = s->flags & DEV_OPT_MASTER ? s->master_ifindex : os->master_ifindex;
 	n->flags = s->flags | os->flags | os->valid_flags;
 }
@@ -561,6 +563,11 @@ device_init_settings(struct device *dev, struct blob_attr **tb)
 		s->flags |= DEV_OPT_MASTER;
 	}
 
+	if ((cur = tb[DEV_ATTR_EEE])) {
+		s->eee = blobmsg_get_bool(cur);
+		s->flags |= DEV_OPT_EEE;
+	}
+
 	cur = tb[DEV_ATTR_AUTH_VLAN];
 	free(dev->config_auth_vlans);
 	dev->config_auth_vlans = cur ? blob_memdup(cur) : NULL;
@@ -1388,6 +1395,8 @@ device_dump_status(struct blob_buf *b, struct device *dev)
 			blobmsg_add_u8(b, "auth", st.auth);
 		if (st.flags & DEV_OPT_GRO)
 			blobmsg_add_u8(b, "gro", st.gro);
+		if (st.flags & DEV_OPT_EEE)
+			blobmsg_add_u8(b, "eee", st.eee);
 	}
 
 	s = blobmsg_open_table(b, "statistics");
diff --git a/device.h b/device.h
index 8bad7fb..b2ea0fa 100644
--- a/device.h
+++ b/device.h
@@ -71,6 +71,7 @@ enum {
 	DEV_ATTR_AUTONEG,
 	DEV_ATTR_GRO,
 	DEV_ATTR_MASTER,
+	DEV_ATTR_EEE,
 	__DEV_ATTR_MAX,
 };
 
@@ -142,6 +143,7 @@ enum {
 	DEV_OPT_AUTONEG			= (1ULL << 36),
 	DEV_OPT_GRO			= (1ULL << 37),
 	DEV_OPT_MASTER			= (1ULL << 38),
+	DEV_OPT_EEE			= (1ULL << 39),
 };
 
 /* events broadcasted to all users of a device */
@@ -226,6 +228,7 @@ struct device_settings {
 	bool autoneg;
 	bool gro;
 	int master_ifindex;
+	bool eee;
 };
 
 struct device_vlan_range {
diff --git a/system-linux.c b/system-linux.c
index 147569d..8efb020 100644
--- a/system-linux.c
+++ b/system-linux.c
@@ -1985,6 +1985,23 @@ system_set_ethtool_pause(struct device *dev, struct device_settings *s)
 }
 
 static void
+system_set_ethtool_eee_settings(struct device *dev, struct device_settings *s)
+{
+	struct ethtool_eee eeecmd;
+	struct ifreq ifr = {
+		.ifr_data = (caddr_t)&eeecmd,
+	};
+
+	memset(&eeecmd, 0, sizeof(eeecmd));
+	eeecmd.cmd = ETHTOOL_SEEE;
+	eeecmd.eee_enabled = s->eee;
+	strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
+
+	if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) != 0)
+		netifd_log_message(L_WARNING, "cannot set eee %d for device %s", s->eee, dev->ifname);
+}
+
+static void
 system_set_ethtool_settings(struct device *dev, struct device_settings *s)
 {
 	struct {
@@ -2000,6 +2017,9 @@ system_set_ethtool_settings(struct device *dev, struct device_settings *s)
 
 	system_set_ethtool_pause(dev, s);
 
+	if (s->flags & DEV_OPT_EEE)
+		system_set_ethtool_eee_settings(dev, s);
+
 	memset(&ecmd, 0, sizeof(ecmd));
 	ecmd.req.cmd = ETHTOOL_GLINKSETTINGS;
 	strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);