lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mac80211: generalise work handling

Browse Source 
In order to use auth/assoc for different purposes
other than MLME, it needs to be split up. For other
purposes, a generic work handling (potentially on
another channel) will be useful.

To achieve that, this patch moves much of the MLME
work handling out of mlme into a new work API. The
API can currently handle probing a specific AP,
authentication and association. The MLME previously
handled probe/authentication as one step and will
continue to do so, but they are separate in the new
work handling.

Work items are RCU-managed to be able to check for
existence of an item for a specific frame in the RX
path, but they can be re-used which the MLME right
now will do for its combined probe/auth step.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2009-12-23 13:15:35 +01:00
committed by John W. Linville
parent f679f65d41
commit af6b63741c
9 changed files with 1113 additions and 836 deletions
Download Patch File Download Diff File Expand all files Collapse all files

59
net/mac80211/ieee80211_i.h
View File

@ -228,41 +228,63 @@ struct mesh_preq_queue {
};
enum ieee80211_work_type {
IEEE80211_WORK_AUTH_PROBE,
IEEE80211_WORK_DIRECT_PROBE,
IEEE80211_WORK_AUTH,
IEEE80211_WORK_ASSOC,
};
/**
* enum work_done_result - indicates what to do after work was done
*
* @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
* @WORK_DONE_REQUEUE: This work item was reset to be reused, and
* should be requeued.
*/
enum work_done_result {
WORK_DONE_DESTROY,
WORK_DONE_REQUEUE,
};
struct ieee80211_work {
struct list_head list;
struct rcu_head rcu_head;
struct ieee80211_sub_if_data *sdata;
enum work_done_result (*done)(struct ieee80211_work *wk,
struct sk_buff *skb);
struct ieee80211_channel *chan;
/* XXX: chan type? -- right now not really needed */
unsigned long timeout;
enum ieee80211_work_type type;
u8 filter_ta[ETH_ALEN];
union {
struct {
int tries;
u16 algorithm, transaction;
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len;
u8 bssid[ETH_ALEN];
u8 key[WLAN_KEY_LEN_WEP104];
u8 key_len, key_idx;
bool privacy;
} auth;
} probe_auth;
struct {
struct ieee80211_bss *bss;
const u8 *supp_rates;
const u8 *ht_information_ie;
enum ieee80211_smps_mode smps;
int tries;
u16 capability;
u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
u8 prev_bssid[ETH_ALEN];
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len;
u8 supp_rates_len;
bool wmm_used;
bool wmm_used, use_11n;
} assoc;
};
@ -276,17 +298,11 @@ enum ieee80211_sta_flags {
IEEE80211_STA_BEACON_POLL = BIT(0),
IEEE80211_STA_CONNECTION_POLL = BIT(1),
IEEE80211_STA_CONTROL_PORT = BIT(2),
IEEE80211_STA_WMM_ENABLED = BIT(3),
IEEE80211_STA_DISABLE_11N = BIT(4),
IEEE80211_STA_CSA_RECEIVED = BIT(5),
IEEE80211_STA_MFP_ENABLED = BIT(6),
};
/* flags for MLME request */
enum ieee80211_sta_request {
IEEE80211_STA_REQ_SCAN,
};
struct ieee80211_if_managed {
struct timer_list timer;
struct timer_list conn_mon_timer;
@ -302,12 +318,10 @@ struct ieee80211_if_managed {
struct mutex mtx;
struct ieee80211_bss *associated;
struct list_head work_list;
u8 bssid[ETH_ALEN];
u16 aid;
u16 capab;
struct sk_buff_head skb_queue;
@ -316,8 +330,6 @@ struct ieee80211_if_managed {
enum ieee80211_smps_mode req_smps, /* requested smps mode */
ap_smps; /* smps mode AP thinks we're in */
unsigned long request;
unsigned int flags;
u32 beacon_crc;
@ -583,6 +595,15 @@ struct ieee80211_local {
const struct ieee80211_ops *ops;
/*
* work stuff, potentially off-channel (in the future)
*/
struct mutex work_mtx;
struct list_head work_list;
struct timer_list work_timer;
struct work_struct work_work;
struct sk_buff_head work_skb_queue;
/*
* private workqueue to mac80211. mac80211 makes this accessible
* via ieee80211_queue_work()
@ -1127,6 +1148,14 @@ int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
void ieee80211_recalc_smps(struct ieee80211_local *local,
struct ieee80211_sub_if_data *forsdata);
/* internal work items */
void ieee80211_work_init(struct ieee80211_local *local);
void ieee80211_add_work(struct ieee80211_work *wk);
void free_work(struct ieee80211_work *wk);
void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb);
#ifdef CONFIG_MAC80211_NOINLINE
#define debug_noinline noinline
#else