Expand description
Network link state from /sys/class/net/<iface> and, for Wi-Fi, iw.
Wired links report their negotiated speed in speed (Mbit/s, -1 or an
error when unknown). Wireless drivers do not; their current bit rates come
from nl80211, which is read here through iw dev <iface> link at most
every [WIRELESS_REFRESH] to keep the cost of spawning it negligible.
Structsยง
- NetLink
Reader - Adds link information to network statistics, caching Wi-Fi queries.