drivers/net/bonding/bond_sysfs_slave.c

Source file repositories/reference/linux-study-clean/drivers/net/bonding/bond_sysfs_slave.c

File Facts

System
Linux kernel
Corpus path
drivers/net/bonding/bond_sysfs_slave.c
Extension
.c
Size
3706 bytes
Lines
146
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct slave_attribute {
	struct attribute attr;
	ssize_t (*show)(struct slave *, char *);
};

#define SLAVE_ATTR_RO(_name)					\
const struct slave_attribute slave_attr_##_name = __ATTR_RO(_name)

static ssize_t state_show(struct slave *slave, char *buf)
{
	switch (bond_slave_state(slave)) {
	case BOND_STATE_ACTIVE:
		return sysfs_emit(buf, "active\n");
	case BOND_STATE_BACKUP:
		return sysfs_emit(buf, "backup\n");
	default:
		return sysfs_emit(buf, "UNKNOWN\n");
	}
}
static SLAVE_ATTR_RO(state);

static ssize_t mii_status_show(struct slave *slave, char *buf)
{
	return sysfs_emit(buf, "%s\n", bond_slave_link_status(slave->link));
}
static SLAVE_ATTR_RO(mii_status);

static ssize_t link_failure_count_show(struct slave *slave, char *buf)
{
	return sysfs_emit(buf, "%d\n", slave->link_failure_count);
}
static SLAVE_ATTR_RO(link_failure_count);

static ssize_t perm_hwaddr_show(struct slave *slave, char *buf)
{
	return sysfs_emit(buf, "%*phC\n",
		       slave->dev->addr_len,
		       slave->perm_hwaddr);
}
static SLAVE_ATTR_RO(perm_hwaddr);

static ssize_t queue_id_show(struct slave *slave, char *buf)
{
	return sysfs_emit(buf, "%d\n", READ_ONCE(slave->queue_id));
}
static SLAVE_ATTR_RO(queue_id);

static ssize_t ad_aggregator_id_show(struct slave *slave, char *buf)
{
	const struct aggregator *agg;

	if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
		rcu_read_lock();
		agg = rcu_dereference(SLAVE_AD_INFO(slave)->port.aggregator);
		if (agg) {
			ssize_t res = sysfs_emit(buf, "%d\n",
						 agg->aggregator_identifier);
			rcu_read_unlock();
			return res;
		}
		rcu_read_unlock();
	}

	return sysfs_emit(buf, "N/A\n");
}
static SLAVE_ATTR_RO(ad_aggregator_id);

static ssize_t ad_actor_oper_port_state_show(struct slave *slave, char *buf)
{
	const struct port *ad_port;

	if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
		ad_port = &SLAVE_AD_INFO(slave)->port;
		if (rcu_access_pointer(ad_port->aggregator))
			return sysfs_emit(buf, "%u\n",
				       ad_port->actor_oper_port_state);
	}

	return sysfs_emit(buf, "N/A\n");
}
static SLAVE_ATTR_RO(ad_actor_oper_port_state);

static ssize_t ad_partner_oper_port_state_show(struct slave *slave, char *buf)
{
	const struct port *ad_port;

	if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
		ad_port = &SLAVE_AD_INFO(slave)->port;
		if (rcu_access_pointer(ad_port->aggregator))
			return sysfs_emit(buf, "%u\n",

Annotation

Implementation Notes