This fixes an issue where we sometimes failed to retrieve the SSID; we
sent one initial request before the family ID had been set.
Then, we received the family ID and tried to send another
request. However, if the first request was still in progress, the
second request was never made.
Since the first request lacked the family ID, that response didn’t
contain anything useful.
This adds a new ‘poll-interval’ option to the network module. When set
to a non-zero value, the following Wi-Fi stats will be updated:
* Signal strength
* RX+TX bitrate
This cleans up the nl80211 handling quite a bit, and adds initial
support for nl80211 notifications.
* We now join the nl80211 MLME multicast group (done by parsing the
CTRL_ATTR_MCAST_GROUPS attribute in the reply to our
CTRL_CMD_GETFAMILY request). This gives us CONNECT and DISCONNECT
notifications, allowing us to request and reset SSID that way, instead
of detecting the link’s OPER state.
* Before parsing an nl80211 message, verify it’s for us, by looking
for a NL80211_ATTR_IFINDEX attribute in the message (and comparing the
contents with our previously detected ifindex).
In cases where it makes sense, use calloc() instead of malloc():
* When allocating large objects with many members, many for which
NULL/0 is a good default value.
* Arrays etc where we explicitly initialize to NULL anyway.
Since this struct only contained function pointers, make all modules
export those functions directly.
The plugin manager now defines a module interface struct, and fills it
it by dlsym:ing the functions that used to be in module_info.
All modules are expected to handle a call to content() after having
been instantiated.
I.e. modules *cannot* even expect run() to have started running.
Previously we allowed it on the bar, and on all particles. Now we also
allow it on all modules.
This allows us to specify a "default" font/foreground on a per-module
basis, having it applied to all the modules particles.
State exposed (tag names):
* name: the interface name ("eth0" etc)
* index: the interface index, "ifindex"
* state: operational state (down, up etc)
* mac: the Ethernet hardware address
* ipv4: the *last* IPv4 address added to the interface
* ipv6: the *last* IPv6 address added to the interface
State we monitor (for changes):
* state
* ipv4 addresses
* ipv6 addresses
