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netdev: add conf option to set RSSI threshold

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Environments with several AP's, all at low signal strength may
want to lower the roaming RSSI threshold to prevent IWD from
roaming excessively. This adds an option 'roam_rssi_threshold',
which is still defaulted to -70.
This commit is contained in:
James Prestwood 2019-03-21 09:03:45 -07:00 committed by Denis Kenzior
parent f09fc78aeb
commit 45a51613c4
1 changed files with 8 additions and 2 deletions
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10
src/netdev.c
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@ -724,8 +724,8 @@ static void netdev_lost_beacon(struct netdev *netdev)
netdev->user_data); netdev->user_data);
} }
/* -70 dBm is a popular choice for low signal threshold for roaming */ /* Threshold RSSI for roaming to trigger, configurable in main.conf */
#define LOW_SIGNAL_THRESHOLD -70 static int LOW_SIGNAL_THRESHOLD;
static void netdev_cqm_event_rssi_threshold(struct netdev *netdev, static void netdev_cqm_event_rssi_threshold(struct netdev *netdev,
uint32_t rssi_event) uint32_t rssi_event)
@ -5054,6 +5054,8 @@ bool netdev_watch_remove(uint32_t id)
bool netdev_init(const char *whitelist, const char *blacklist) bool netdev_init(const char *whitelist, const char *blacklist)
{ {
const struct l_settings *settings = iwd_get_config();
if (rtnl) if (rtnl)
return false; return false;
@ -5075,6 +5077,10 @@ bool netdev_init(const char *whitelist, const char *blacklist)
return false; return false;
} }
if (!l_settings_get_int(settings, "General", "roam_rssi_threshold",
&LOW_SIGNAL_THRESHOLD))
LOW_SIGNAL_THRESHOLD = -70;
watchlist_init(&netdev_watches, NULL); watchlist_init(&netdev_watches, NULL);
netdev_list = l_queue_new(); netdev_list = l_queue_new();