From 15f385982e3a4782fe8ed71a9a6beb64a2160c30 Mon Sep 17 00:00:00 2001 From: Zhu Yi Date: Thu, 19 Jan 2006 16:21:35 +0800 Subject: [PATCH] ieee80211: Add helpers for IBSS DFS handling To support IEEE 802.11h in IBSS, an ibss_dfs field is added to struct ieee80211_network. In IBSS, if one STA sends a beacon with DFS info (for radar detection), all the other STAs should receive and store this DFS. All STAs should send the DFS as one of the information element in the beacon they are scheduled to send (if possible) in the future. Since the ibss_dfs has variable length, it must be allocated dynamically. ieee80211_network_reset() is added to clear the ibss_dfs field. ieee80211_network_free() is also updated to free the ibss_dfs field if it is not NULL. Signed-off-by: Zhu Yi Signed-off-by: John W. Linville --- net/ieee80211/ieee80211_module.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/net/ieee80211/ieee80211_module.c b/net/ieee80211/ieee80211_module.c index 90d18b72da3dc2..5f67c684afc246 100644 --- a/net/ieee80211/ieee80211_module.c +++ b/net/ieee80211/ieee80211_module.c @@ -82,10 +82,28 @@ static int ieee80211_networks_allocate(struct ieee80211_device *ieee) return 0; } +void ieee80211_network_reset(struct ieee80211_network *network) +{ + if (!network) + return; + + if (network->ibss_dfs) { + kfree(network->ibss_dfs); + network->ibss_dfs = NULL; + } +} + static inline void ieee80211_networks_free(struct ieee80211_device *ieee) { + int i; + if (!ieee->networks) return; + + for (i = 0; i < MAX_NETWORK_COUNT; i++) + if (ieee->networks[i].ibss_dfs) + kfree(ieee->networks[i].ibss_dfs); + kfree(ieee->networks); ieee->networks = NULL; } -- cgit 1.2.3-korg