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| author | Masashi Honma <masashi.honma@gmail.com> | 2015-02-24 22:42:16 +0900 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2015-02-28 21:31:10 +0100 |
| commit | 31f909a2c0abfc1a1a76b2981d28ac85d33210e7 (patch) | |
| tree | 204d09f9f14303ca93fb38c5526185b4cbd2ee3b /net/mac80211/mesh.c | |
| parent | cd37a90b2a417e5882414e19954eeed174aa4d29 (diff) | |
| download | linux-31f909a2c0abfc1a1a76b2981d28ac85d33210e7.tar.gz linux-31f909a2c0abfc1a1a76b2981d28ac85d33210e7.tar.bz2 linux-31f909a2c0abfc1a1a76b2981d28ac85d33210e7.zip | |
nl/mac80211: allow zero plink timeout to disable STA expiration
Both wpa_supplicant and mac80211 have and inactivity timer. By default
wpa_supplicant will be timed out in 5 minutes and mac80211's it is 30
minutes. If wpa_supplicant uses a longer timer than mac80211, it will
get unexpected disconnection by mac80211.
Using 0xffffffff instead as the configured value could solve this w/o
changing the code, but due to integer overflow in the expression used
this doesn't work. The expression is:
(current jiffies) > (frame Rx jiffies + NL80211_MESHCONF_PLINK_TIMEOUT * 250)
On 32bit system, the right side would overflow and be a very small
value if NL80211_MESHCONF_PLINK_TIMEOUT is sufficiently large,
causing unexpectedly early disconnections.
Instead allow disabling the inactivity timer to avoid this situation,
by passing the (previously invalid and useless) value 0.
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
[reword/rewrap commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/mesh.c')
| -rw-r--r-- | net/mac80211/mesh.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index 0c8b2a77d312..acf441ff9f4a 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -574,7 +574,8 @@ static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata) struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; u32 changed; - ieee80211_sta_expire(sdata, ifmsh->mshcfg.plink_timeout * HZ); + if (ifmsh->mshcfg.plink_timeout > 0) + ieee80211_sta_expire(sdata, ifmsh->mshcfg.plink_timeout * HZ); mesh_path_expire(sdata); changed = mesh_accept_plinks_update(sdata); |