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authorZhu Yi <yi.zhu@intel.com>2006-01-19 03:21:35 -0500
committerJohn W. Linville <linville@tuxdriver.com>2006-01-27 17:08:07 -0500
commit15f385982e3a4782fe8ed71a9a6beb64a2160c30 (patch)
treed33236c0ed68d8a255c88e3e3279f876c67575c6
parentb79e20b60997e427b701055a2c69fb0c1d507aa9 (diff)
[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 <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--net/ieee80211/ieee80211_module.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/net/ieee80211/ieee80211_module.c b/net/ieee80211/ieee80211_module.c
index 90d18b72da3d..5f67c684afc2 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)
82 return 0; 82 return 0;
83} 83}
84 84
85void ieee80211_network_reset(struct ieee80211_network *network)
86{
87 if (!network)
88 return;
89
90 if (network->ibss_dfs) {
91 kfree(network->ibss_dfs);
92 network->ibss_dfs = NULL;
93 }
94}
95
85static inline void ieee80211_networks_free(struct ieee80211_device *ieee) 96static inline void ieee80211_networks_free(struct ieee80211_device *ieee)
86{ 97{
98 int i;
99
87 if (!ieee->networks) 100 if (!ieee->networks)
88 return; 101 return;
102
103 for (i = 0; i < MAX_NETWORK_COUNT; i++)
104 if (ieee->networks[i].ibss_dfs)
105 kfree(ieee->networks[i].ibss_dfs);
106
89 kfree(ieee->networks); 107 kfree(ieee->networks);
90 ieee->networks = NULL; 108 ieee->networks = NULL;
91} 109}