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mac80211: mesh data structures and first mesh changes 

Includes integration in struct sta_info of mesh peer link elements, previously
on their own mesh peer link table.

Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Luis Carlos Cobo 2008-02-23 15:17:11 +01:00 committed by John W. Linville
parent 33b64eb2b1
commit ee3858551a
10 changed files with 394 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
net/mac80211/cfg.c
View File

@ -50,7 +50,7 @@ static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
if (itype == IEEE80211_IF_TYPE_INVALID)
return -EINVAL;
err = ieee80211_if_add(local->mdev, name, &dev, itype);
err = ieee80211_if_add(local->mdev, name, &dev, itype, params);
if (err || itype != IEEE80211_IF_TYPE_MNTR || !flags)
return err;

2
net/mac80211/ieee80211.c
View File

@ -1663,7 +1663,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
/* add one default STA interface */
result = ieee80211_if_add(local->mdev, "wlan%d", NULL,
IEEE80211_IF_TYPE_STA);
IEEE80211_IF_TYPE_STA, NULL);
if (result)
printk(KERN_WARNING "%s: Failed to add default virtual iface\n",
wiphy_name(local->hw.wiphy));

170
net/mac80211/ieee80211_i.h
View File

@ -90,6 +90,12 @@ struct ieee80211_sta_bss {
size_t wmm_ie_len;
u8 *ht_ie;
size_t ht_ie_len;
#ifdef CONFIG_MAC80211_MESH
u8 *mesh_id;
size_t mesh_id_len;
#endif
/* mesh_cfg left out the ifdef to reduce clutter on bss handling */
u8 *mesh_cfg;
#define IEEE80211_MAX_SUPP_RATES 32
u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
size_t supp_rates_len;
@ -227,6 +233,43 @@ struct ieee80211_if_vlan {
struct list_head list;
};
#ifdef CONFIG_MAC80211_MESH
struct mesh_stats {
__u32 fwded_frames; /* Mesh forwarded frames */
__u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
__u32 dropped_frames_no_route; /* Not transmitted, no route found */
atomic_t estab_plinks;
};
#define PREQ_Q_F_START 0x1
#define PREQ_Q_F_REFRESH 0x2
struct mesh_preq_queue {
struct list_head list;
u8 dst[ETH_ALEN];
u8 flags;
};
struct mesh_config {
/* Timeouts in ms */
/* Mesh plink management parameters */
u16 dot11MeshRetryTimeout;
u16 dot11MeshConfirmTimeout;
u16 dot11MeshHoldingTimeout;
u16 dot11MeshMaxPeerLinks;
u8 dot11MeshMaxRetries;
u8 dot11MeshTTL;
bool auto_open_plinks;
/* HWMP parameters */
u32 dot11MeshHWMPactivePathTimeout;
u16 dot11MeshHWMPpreqMinInterval;
u16 dot11MeshHWMPnetDiameterTraversalTime;
u8 dot11MeshHWMPmaxPREQretries;
u32 path_refresh_time;
u16 min_discovery_timeout;
};
#endif
/* flags used in struct ieee80211_if_sta.flags */
#define IEEE80211_STA_SSID_SET BIT(0)
#define IEEE80211_STA_BSSID_SET BIT(1)
@ -245,7 +288,8 @@ struct ieee80211_if_sta {
enum {
IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED,
IEEE80211_MESH_UP
} state;
struct timer_list timer;
struct work_struct work;
@ -254,6 +298,34 @@ struct ieee80211_if_sta {
size_t ssid_len;
u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
size_t scan_ssid_len;
#ifdef CONFIG_MAC80211_MESH
struct timer_list mesh_path_timer;
u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
bool accepting_plinks;
size_t mesh_id_len;
/* Active Path Selection Protocol Identifier */
u8 mesh_pp_id[4];
/* Active Path Selection Metric Identifier */
u8 mesh_pm_id[4];
/* Congestion Control Mode Identifier */
u8 mesh_cc_id[4];
/* Local mesh Destination Sequence Number */
u32 dsn;
/* Last used PREQ ID */
u32 preq_id;
atomic_t mpaths;
/* Timestamp of last DSN update */
unsigned long last_dsn_update;
/* Timestamp of last DSN sent */
unsigned long last_preq;
struct mesh_rmc *rmc;
spinlock_t mesh_preq_queue_lock;
struct mesh_preq_queue preq_queue;
int preq_queue_len;
struct mesh_stats mshstats;
struct mesh_config mshcfg;
u8 mesh_seqnum[3];
#endif
u16 aid;
u16 ap_capab, capab;
u8 *extra_ie; /* to be added to the end of AssocReq */
@ -286,6 +358,7 @@ struct ieee80211_if_sta {
u32 supp_rates_bits[IEEE80211_NUM_BANDS];
int wmm_last_param_set;
int num_beacons; /* number of TXed beacon frames by this STA */
};
@ -365,6 +438,7 @@ struct ieee80211_sub_if_data {
struct dentry *auth_alg;
struct dentry *auth_transaction;
struct dentry *flags;
struct dentry *num_beacons_sta;
} sta;
struct {
struct dentry *channel_use;
@ -390,6 +464,35 @@ struct ieee80211_sub_if_data {
} monitor;
struct dentry *default_key;
} debugfs;
#ifdef CONFIG_MAC80211_MESH
struct dentry *mesh_stats_dir;
struct {
struct dentry *fwded_frames;
struct dentry *dropped_frames_ttl;
struct dentry *dropped_frames_no_route;
struct dentry *estab_plinks;
struct timer_list mesh_path_timer;
} mesh_stats;
struct dentry *mesh_config_dir;
struct {
struct dentry *dot11MeshRetryTimeout;
struct dentry *dot11MeshConfirmTimeout;
struct dentry *dot11MeshHoldingTimeout;
struct dentry *dot11MeshMaxRetries;
struct dentry *dot11MeshTTL;
struct dentry *auto_open_plinks;
struct dentry *dot11MeshMaxPeerLinks;
struct dentry *dot11MeshHWMPactivePathTimeout;
struct dentry *dot11MeshHWMPpreqMinInterval;
struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
struct dentry *dot11MeshHWMPmaxPREQretries;
struct dentry *path_refresh_time;
struct dentry *min_discovery_timeout;
} mesh_config;
#endif
#endif
/* must be last, dynamically sized area in this! */
struct ieee80211_vif vif;
@ -617,6 +720,57 @@ struct ieee80211_ra_tid {
u16 tid;
};
/* Parsed Information Elements */
struct ieee802_11_elems {
/* pointers to IEs */
u8 *ssid;
u8 *supp_rates;
u8 *fh_params;
u8 *ds_params;
u8 *cf_params;
u8 *tim;
u8 *ibss_params;
u8 *challenge;
u8 *wpa;
u8 *rsn;
u8 *erp_info;
u8 *ext_supp_rates;
u8 *wmm_info;
u8 *wmm_param;
u8 *ht_cap_elem;
u8 *ht_info_elem;
u8 *mesh_config;
u8 *mesh_id;
u8 *peer_link;
u8 *preq;
u8 *prep;
u8 *perr;
/* length of them, respectively */
u8 ssid_len;
u8 supp_rates_len;
u8 fh_params_len;
u8 ds_params_len;
u8 cf_params_len;
u8 tim_len;
u8 ibss_params_len;
u8 challenge_len;
u8 wpa_len;
u8 rsn_len;
u8 erp_info_len;
u8 ext_supp_rates_len;
u8 wmm_info_len;
u8 wmm_param_len;
u8 ht_cap_elem_len;
u8 ht_info_elem_len;
u8 mesh_config_len;
u8 mesh_id_len;
u8 peer_link_len;
u8 preq_len;
u8 prep_len;
u8 perr_len;
};
static inline struct ieee80211_local *hw_to_local(
struct ieee80211_hw *hw)
{
@ -686,6 +840,7 @@ int ieee80211_set_compression(struct ieee80211_local *local,
struct net_device *dev, struct sta_info *sta);
int ieee80211_set_freq(struct ieee80211_local *local, int freq);
/* ieee80211_sta.c */
#define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
void ieee80211_sta_timer(unsigned long data);
void ieee80211_sta_work(struct work_struct *work);
void ieee80211_sta_scan_work(struct work_struct *work);
@ -726,9 +881,20 @@ void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *da,
u16 tid, u16 initiator, u16 reason);
void sta_rx_agg_session_timer_expired(unsigned long data);
void sta_addba_resp_timer_expired(unsigned long data);
u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
struct ieee802_11_elems *elems,
enum ieee80211_band band);
void ieee80211_start_mesh(struct net_device *dev);
void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
int encrypt);
void ieee802_11_parse_elems(u8 *start, size_t len,
struct ieee802_11_elems *elems);
/* ieee80211_iface.c */
int ieee80211_if_add(struct net_device *dev, const char *name,
struct net_device **new_dev, int type);
struct net_device **new_dev, int type,
struct vif_params *params);
void ieee80211_if_set_type(struct net_device *dev, int type);
void ieee80211_if_reinit(struct net_device *dev);
void __ieee80211_if_del(struct ieee80211_local *local,

62
net/mac80211/ieee80211_iface.c
View File

@ -15,6 +15,9 @@
#include "ieee80211_i.h"
#include "sta_info.h"
#include "debugfs_netdev.h"
#ifdef CONFIG_MAC80211_MESH
#include "mesh.h"
#endif
void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata)
{
@ -39,7 +42,8 @@ static void ieee80211_if_sdata_deinit(struct ieee80211_sub_if_data *sdata)
/* Must be called with rtnl lock held. */
int ieee80211_if_add(struct net_device *dev, const char *name,
struct net_device **new_dev, int type)
struct net_device **new_dev, int type,
struct vif_params *params)
{
struct net_device *ndev;
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
@ -78,6 +82,15 @@ int ieee80211_if_add(struct net_device *dev, const char *name,
ieee80211_debugfs_add_netdev(sdata);
ieee80211_if_set_type(ndev, type);
#ifdef CONFIG_MAC80211_MESH
if (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT &&
params && params->mesh_id_len) {
sdata->u.sta.mesh_id_len = params->mesh_id_len;
memcpy(sdata->u.sta.mesh_id, params->mesh_id,
params->mesh_id_len);
}
#endif
/* we're under RTNL so all this is fine */
if (unlikely(local->reg_state == IEEE80211_DEV_UNREGISTERED)) {
__ieee80211_if_del(local, sdata);
@ -134,6 +147,7 @@ void ieee80211_if_set_type(struct net_device *dev, int type)
sdata->bss = &sdata->u.ap;
INIT_LIST_HEAD(&sdata->u.ap.vlans);
break;
case IEEE80211_IF_TYPE_MESH_POINT:
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS: {
struct ieee80211_sub_if_data *msdata;
@ -155,6 +169,48 @@ void ieee80211_if_set_type(struct net_device *dev, int type)
msdata = IEEE80211_DEV_TO_SUB_IF(sdata->local->mdev);
sdata->bss = &msdata->u.ap;
#ifdef CONFIG_MAC80211_MESH
if (type == IEEE80211_IF_TYPE_MESH_POINT) {
ifsta->mshcfg.dot11MeshRetryTimeout = MESH_RET_T;
ifsta->mshcfg.dot11MeshConfirmTimeout = MESH_CONF_T;
ifsta->mshcfg.dot11MeshHoldingTimeout = MESH_HOLD_T;
ifsta->mshcfg.dot11MeshMaxRetries = MESH_MAX_RETR;
ifsta->mshcfg.dot11MeshTTL = MESH_TTL;
ifsta->mshcfg.auto_open_plinks = true;
ifsta->mshcfg.dot11MeshMaxPeerLinks =
MESH_MAX_ESTAB_PLINKS;
ifsta->mshcfg.dot11MeshHWMPactivePathTimeout =
MESH_PATH_TIMEOUT;
ifsta->mshcfg.dot11MeshHWMPpreqMinInterval =
MESH_PREQ_MIN_INT;
ifsta->mshcfg.dot11MeshHWMPnetDiameterTraversalTime =
MESH_DIAM_TRAVERSAL_TIME;
ifsta->mshcfg.dot11MeshHWMPmaxPREQretries =
MESH_MAX_PREQ_RETRIES;
ifsta->mshcfg.path_refresh_time =
MESH_PATH_REFRESH_TIME;
ifsta->mshcfg.min_discovery_timeout =
MESH_MIN_DISCOVERY_TIMEOUT;
ifsta->accepting_plinks = true;
ifsta->preq_id = 0;
ifsta->dsn = 0;
atomic_set(&ifsta->mpaths, 0);
mesh_rmc_init(dev);
ifsta->last_preq = jiffies;
/* Allocate all mesh structures when creating the first
* mesh interface.
*/
if (!mesh_allocated)
ieee80211s_init();
mesh_ids_set_default(ifsta);
setup_timer(&ifsta->mesh_path_timer,
ieee80211_mesh_path_timer,
(unsigned long) sdata);
INIT_LIST_HEAD(&ifsta->preq_queue.list);
spin_lock_init(&ifsta->mesh_preq_queue_lock);
}
#endif
break;
}
case IEEE80211_IF_TYPE_MNTR:
@ -236,6 +292,10 @@ void ieee80211_if_reinit(struct net_device *dev)
}
break;
case IEEE80211_IF_TYPE_MESH_POINT:
#ifdef CONFIG_MAC80211_MESH
mesh_rmc_free(dev);
#endif
/* fall through */
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
kfree(sdata->u.sta.extra_ie);

1
net/mac80211/ieee80211_ioctl.c
View File

@ -525,6 +525,7 @@ static int ieee80211_ioctl_siwscan(struct net_device *dev,
if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT &&
sdata->vif.type != IEEE80211_IF_TYPE_AP)
return -EOPNOTSUPP;

70
net/mac80211/ieee80211_sta.c
View File

@ -87,46 +87,8 @@ static int ieee80211_sta_config_auth(struct net_device *dev,
struct ieee80211_if_sta *ifsta);
/* Parsed Information Elements */
struct ieee802_11_elems {
/* pointers to IEs */
u8 *ssid;
u8 *supp_rates;
u8 *fh_params;
u8 *ds_params;
u8 *cf_params;
u8 *tim;
u8 *ibss_params;
u8 *challenge;
u8 *wpa;
u8 *rsn;
u8 *erp_info;
u8 *ext_supp_rates;
u8 *wmm_info;
u8 *wmm_param;
u8 *ht_cap_elem;
u8 *ht_info_elem;
/* length of them, respectively */
u8 ssid_len;
u8 supp_rates_len;
u8 fh_params_len;
u8 ds_params_len;
u8 cf_params_len;
u8 tim_len;
u8 ibss_params_len;
u8 challenge_len;
u8 wpa_len;
u8 rsn_len;
u8 erp_info_len;
u8 ext_supp_rates_len;
u8 wmm_info_len;
u8 wmm_param_len;
u8 ht_cap_elem_len;
u8 ht_info_elem_len;
};
static void ieee802_11_parse_elems(u8 *start, size_t len,
struct ieee802_11_elems *elems)
void ieee802_11_parse_elems(u8 *start, size_t len,
struct ieee802_11_elems *elems)
{
size_t left = len;
u8 *pos = start;
@ -215,6 +177,30 @@ static void ieee802_11_parse_elems(u8 *start, size_t len,
elems->ht_info_elem = pos;
elems->ht_info_elem_len = elen;
break;
case WLAN_EID_MESH_ID:
elems->mesh_id = pos;
elems->mesh_id_len = elen;
break;
case WLAN_EID_MESH_CONFIG:
elems->mesh_config = pos;
elems->mesh_config_len = elen;
break;
case WLAN_EID_PEER_LINK:
elems->peer_link = pos;
elems->peer_link_len = elen;
break;
case WLAN_EID_PREQ:
elems->preq = pos;
elems->preq_len = elen;
break;
case WLAN_EID_PREP:
elems->prep = pos;
elems->prep_len = elen;
break;
case WLAN_EID_PERR:
elems->perr = pos;
elems->perr_len = elen;
break;
default:
break;
}
@ -501,8 +487,8 @@ static void ieee80211_set_disassoc(struct net_device *dev,
ieee80211_set_associated(dev, ifsta, 0);
}
static void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
int encrypt)
void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
int encrypt)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_tx_packet_data *pkt_data;

14
net/mac80211/rc80211_pid_algo.c
View File

@ -15,6 +15,9 @@
#include <linux/debugfs.h>
#include <net/mac80211.h>
#include "ieee80211_rate.h"
#ifdef CONFIG_MAC80211_MESH
#include "mesh.h"
#endif
#include "rc80211_pid.h"
@ -148,6 +151,9 @@ static void rate_control_pid_sample(struct rc_pid_info *pinfo,
struct ieee80211_local *local,
struct sta_info *sta)
{
#ifdef CONFIG_MAC80211_MESH
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
#endif
struct rc_pid_sta_info *spinfo = sta->rate_ctrl_priv;
struct rc_pid_rateinfo *rinfo = pinfo->rinfo;
struct ieee80211_supported_band *sband;
@ -178,7 +184,14 @@ static void rate_control_pid_sample(struct rc_pid_info *pinfo,
pf = spinfo->last_pf;
else {
pf = spinfo->tx_num_failed * 100 / spinfo->tx_num_xmit;
#ifdef CONFIG_MAC80211_MESH
if (pf == 100 &&
sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT)
mesh_plink_broken(sta);
#endif
pf <<= RC_PID_ARITH_SHIFT;
sta->fail_avg = ((pf + (spinfo->last_pf << 3)) / 9)
>> RC_PID_ARITH_SHIFT;
}
spinfo->tx_num_xmit = 0;
@ -357,6 +370,7 @@ static void rate_control_pid_rate_init(void *priv, void *priv_sta,
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
sta->txrate_idx = rate_lowest_index(local, sband, sta);
sta->fail_avg = 0;
}
static void *rate_control_pid_alloc(struct ieee80211_local *local)

42
net/mac80211/sta_info.c
View File

@ -21,6 +21,9 @@
#include "ieee80211_rate.h"
#include "sta_info.h"
#include "debugfs_sta.h"
#ifdef CONFIG_MAC80211_MESH
#include "mesh.h"
#endif
/* Caller must hold local->sta_lock */
static void sta_info_hash_add(struct ieee80211_local *local,
@ -84,6 +87,27 @@ struct sta_info *sta_info_get(struct ieee80211_local *local, u8 *addr)
}
EXPORT_SYMBOL(sta_info_get);
struct sta_info *sta_info_get_by_idx(struct ieee80211_local *local, int idx,
struct net_device *dev)
{
struct sta_info *sta;
int i = 0;
read_lock_bh(&local->sta_lock);
list_for_each_entry(sta, &local->sta_list, list) {
if (i < idx) {
++i;
continue;
} else if (!dev || dev == sta->dev) {
__sta_info_get(sta);
read_unlock_bh(&local->sta_lock);
return sta;
}
}
read_unlock_bh(&local->sta_lock);
return NULL;
}
static void sta_info_release(struct kref *kref)
{
@ -284,12 +308,19 @@ void sta_info_remove(struct sta_info *sta)
__sta_info_clear_tim_bit(sdata->bss, sta);
}
local->num_sta--;
#ifdef CONFIG_MAC80211_MESH
if (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT)
mesh_accept_plinks_update(sdata->dev);
#endif
}
void sta_info_free(struct sta_info *sta)
{
struct sk_buff *skb;
struct ieee80211_local *local = sta->local;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
DECLARE_MAC_BUF(mac);
might_sleep();
@ -298,6 +329,14 @@ void sta_info_free(struct sta_info *sta)
sta_info_remove(sta);
write_unlock_bh(&local->sta_lock);
#ifdef CONFIG_MAC80211_MESH
if (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT) {
spin_lock_bh(&sta->plink_lock);
mesh_plink_deactivate(sta);
spin_unlock_bh(&sta->plink_lock);
}
#endif
while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) {
local->total_ps_buffered--;
dev_kfree_skb(skb);
@ -315,9 +354,6 @@ void sta_info_free(struct sta_info *sta)
WARN_ON(sta->key);
if (local->ops->sta_notify) {
struct ieee80211_sub_if_data *sdata;
sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
sdata = sdata->u.vlan.ap;

30
net/mac80211/sta_info.h
View File

@ -107,6 +107,18 @@ struct tid_ampdu_rx {
struct timer_list session_timer;
};
#ifdef CONFIG_MAC80211_MESH
enum plink_state {
LISTEN,
OPN_SNT,
OPN_RCVD,
CNF_RCVD,
ESTAB,
HOLDING,
BLOCKED
};
#endif
/**
* struct sta_ampdu_mlme - STA aggregation information.
*
@ -144,6 +156,8 @@ struct sta_info {
unsigned long rx_bytes, tx_bytes;
unsigned long tx_retry_failed, tx_retry_count;
unsigned long tx_filtered_count;
/* moving percentage of failed MSDUs */
unsigned int fail_avg;
unsigned int wep_weak_iv_count; /* number of RX frames with weak IV */
@ -192,6 +206,20 @@ struct sta_info {
struct sta_ampdu_mlme ampdu_mlme;
u8 timer_to_tid[STA_TID_NUM]; /* convert timer id to tid */
u8 tid_to_tx_q[STA_TID_NUM]; /* map tid to tx queue */
#ifdef CONFIG_MAC80211_MESH
/* mesh peer link attributes */
__le16 llid; /* Local link ID */
__le16 plid; /* Peer link ID */
__le16 reason; /* Buffer for cancel reason on HOLDING state */
enum plink_state plink_state;
u32 plink_timeout;
struct timer_list plink_timer;
u8 plink_retries; /* Retries in establishment */
bool ignore_plink_timer;
spinlock_t plink_lock; /* For peer_state reads / updates and other
updates in the structure. Ensures robust
transitions for the peerlink FSM */
#endif
#ifdef CONFIG_MAC80211_DEBUGFS
struct sta_info_debugfsdentries {
@ -234,6 +262,8 @@ static inline void __sta_info_get(struct sta_info *sta)
}
struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr);
struct sta_info *sta_info_get_by_idx(struct ieee80211_local *local, int idx,
struct net_device *dev);
void sta_info_put(struct sta_info *sta);
struct sta_info *sta_info_add(struct ieee80211_local *local,
struct net_device *dev, u8 *addr, gfp_t gfp);

51
net/mac80211/util.c
View File

@ -26,6 +26,9 @@
#include "ieee80211_i.h"
#include "ieee80211_rate.h"
#ifdef CONFIG_MAC80211_MESH
#include "mesh.h"
#endif
#include "wme.h"
/* privid for wiphys to determine whether they belong to us or not */
@ -146,6 +149,26 @@ int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb)
}
EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb);
#ifdef CONFIG_MAC80211_MESH
int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr)
{
int ae = meshhdr->flags & IEEE80211S_FLAGS_AE;
/* 7.1.3.5a.2 */
switch (ae) {
case 0:
return 5;
case 1:
return 11;
case 2:
return 17;
case 3:
return 23;
default:
return 5;
}
}
#endif
void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
@ -395,3 +418,31 @@ void ieee80211_iterate_active_interfaces(
rcu_read_unlock();
}
EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces);
#ifdef CONFIG_MAC80211_MESH
/**
* ieee80211_new_mesh_header - create a new mesh header
* @meshhdr: uninitialized mesh header
* @sdata: mesh interface to be used
*
* Return the header length.
*/
int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
struct ieee80211_sub_if_data *sdata)
{
meshhdr->flags = 0;
meshhdr->ttl = sdata->u.sta.mshcfg.dot11MeshTTL;
meshhdr->seqnum[0] = sdata->u.sta.mesh_seqnum[0]++;
meshhdr->seqnum[1] = sdata->u.sta.mesh_seqnum[1];
meshhdr->seqnum[2] = sdata->u.sta.mesh_seqnum[2];
if (sdata->u.sta.mesh_seqnum[0] == 0) {
sdata->u.sta.mesh_seqnum[1]++;
if (sdata->u.sta.mesh_seqnum[1] == 0)
sdata->u.sta.mesh_seqnum[2]++;
}
return 5;
}
#endif