diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2009-08-07 16:17:38 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-08-14 09:13:43 -0400 |
| commit | f5ea9120be2e5d5c846243416cfdce01d02f5836 (patch) | |
| tree | cade27e47a90dde79a523598b96a2ebb50770d2f /net/mac80211/sta_info.c | |
| parent | f401a6f7ede753e56b84025e7d2db0d5ef560ce6 (diff) | |
nl80211: add generation number to all dumps
In order for userspace to be able to figure out whether
it obtained a consistent snapshot of data or not when
using netlink dumps, we need to have a generation number
in each dump message that indicates whether the list has
changed or not -- its value is arbitrary.
This patch adds such a number to all dumps, this needs
some mac80211 involvement to keep track of a generation
number to start with when adding/removing mesh paths or
stations.
The wiphy and netdev lists can be fully handled within
cfg80211, of course, but generation numbers need to be
stored there as well.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/sta_info.c')
| -rw-r--r-- | net/mac80211/sta_info.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index a360bceeba5..eec001491e6 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -349,6 +349,7 @@ int sta_info_insert(struct sta_info *sta) goto out_free; } list_add(&sta->list, &local->sta_list); + local->sta_generation++; local->num_sta++; sta_info_hash_add(local, sta); @@ -485,6 +486,7 @@ static void __sta_info_unlink(struct sta_info **sta) } local->num_sta--; + local->sta_generation++; if (local->ops->sta_notify) { if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |