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mac80211: add PLINK_ prefix and kernel doc to enum plink_state

Browse source 
Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Luis Carlos Cobo 2008-02-29 15:46:08 -08:00 committed by John W. Linville
parent cfa22c716f
commit b4e08ea141
6 changed files with 65 additions and 51 deletions
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6
net/mac80211/mesh.c
View file

@ -91,9 +91,9 @@ void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
/* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0,
* the mesh interface might be able to establish plinks with peers that
* are already on the table but are not on ESTAB state. However, in
* general the mesh interface is not accepting peer link requests from
* new peers, and that must be reflected in the beacon
* are already on the table but are not on PLINK_ESTAB state. However,
* in general the mesh interface is not accepting peer link requests
* from new peers, and that must be reflected in the beacon
*/
free_plinks = mesh_plink_availables(sdata);

6
net/mac80211/mesh_pathtbl.c
View file

@ -261,9 +261,9 @@ EXPORT_SYMBOL(mesh_plink_broken);
*
* @sta - mesh peer to match
*
* RCU notes: this function is called when a mesh plink transitions from ESTAB
* to any other state, since ESTAB state is the only one that allows path
* creation. This will happen before the sta can be freed (because
* RCU notes: this function is called when a mesh plink transitions from
* PLINK_ESTAB to any other state, since PLINK_ESTAB state is the only one that
* allows path creation. This will happen before the sta can be freed (because
* sta_info_destroy() calls this) so any reader in a rcu read block will be
* protected against the plink disappearing.
*/

69
net/mac80211/mesh_plink.c
View file

@ -84,7 +84,7 @@ void mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata)
*/
static inline void mesh_plink_fsm_restart(struct sta_info *sta)
{
sta->plink_state = LISTEN;
sta->plink_state = PLINK_LISTEN;
sta->llid = sta->plid = sta->reason = 0;
sta->plink_retries = 0;
}
@ -121,9 +121,9 @@ static void __mesh_plink_deactivate(struct sta_info *sta)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
if (sta->plink_state == ESTAB)
if (sta->plink_state == PLINK_ESTAB)
mesh_plink_dec_estab_count(sdata);
sta->plink_state = BLOCKED;
sta->plink_state = PLINK_BLOCKED;
mesh_path_flush_by_nexthop(sta);
}
@ -243,7 +243,7 @@ void mesh_neighbour_update(u8 *hw_addr, u64 rates, struct net_device *dev,
sta->last_rx = jiffies;
sta->supp_rates[local->hw.conf.channel->band] = rates;
if (peer_accepting_plinks && sta->plink_state == LISTEN &&
if (peer_accepting_plinks && sta->plink_state == PLINK_LISTEN &&
sdata->u.sta.accepting_plinks &&
sdata->u.sta.mshcfg.auto_open_plinks)
mesh_plink_open(sta);
@ -283,8 +283,8 @@ static void mesh_plink_timer(unsigned long data)
dev = sdata->dev;
switch (sta->plink_state) {
case OPN_RCVD:
case OPN_SNT:
case PLINK_OPN_RCVD:
case PLINK_OPN_SNT:
/* retry timer */
if (sta->plink_retries < dot11MeshMaxRetries(sdata)) {
u32 rand;
@ -303,17 +303,17 @@ static void mesh_plink_timer(unsigned long data)
}
reason = cpu_to_le16(MESH_MAX_RETRIES);
/* fall through on else */
case CNF_RCVD:
case PLINK_CNF_RCVD:
/* confirm timer */
if (!reason)
reason = cpu_to_le16(MESH_CONFIRM_TIMEOUT);
sta->plink_state = HOLDING;
sta->plink_state = PLINK_HOLDING;
mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
spin_unlock_bh(&sta->plink_lock);
mesh_plink_frame_tx(dev, PLINK_CLOSE, sta->addr, llid, plid,
reason);
break;
case HOLDING:
case PLINK_HOLDING:
/* holding timer */
del_timer(&sta->plink_timer);
mesh_plink_fsm_restart(sta);
@ -345,11 +345,11 @@ int mesh_plink_open(struct sta_info *sta)
spin_lock_bh(&sta->plink_lock);
get_random_bytes(&llid, 2);
sta->llid = llid;
if (sta->plink_state != LISTEN) {
if (sta->plink_state != PLINK_LISTEN) {
spin_unlock_bh(&sta->plink_lock);
return -EBUSY;
}
sta->plink_state = OPN_SNT;
sta->plink_state = PLINK_OPN_SNT;
mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
spin_unlock_bh(&sta->plink_lock);
mpl_dbg("Mesh plink: starting establishment with %s\n",
@ -367,7 +367,7 @@ void mesh_plink_block(struct sta_info *sta)
spin_lock_bh(&sta->plink_lock);
__mesh_plink_deactivate(sta);
sta->plink_state = BLOCKED;
sta->plink_state = PLINK_BLOCKED;
spin_unlock_bh(&sta->plink_lock);
}
@ -385,18 +385,19 @@ int mesh_plink_close(struct sta_info *sta)
sta->reason = cpu_to_le16(MESH_LINK_CANCELLED);
reason = sta->reason;
if (sta->plink_state == LISTEN || sta->plink_state == BLOCKED) {
if (sta->plink_state == PLINK_LISTEN ||
sta->plink_state == PLINK_BLOCKED) {
mesh_plink_fsm_restart(sta);
spin_unlock_bh(&sta->plink_lock);
return 0;
} else if (sta->plink_state == ESTAB) {
} else if (sta->plink_state == PLINK_ESTAB) {
__mesh_plink_deactivate(sta);
/* The timer should not be running */
mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
} else if (!mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)))
sta->ignore_plink_timer = true;
sta->plink_state = HOLDING;
sta->plink_state = PLINK_HOLDING;
llid = sta->llid;
plid = sta->plid;
spin_unlock_bh(&sta->plink_lock);
@ -468,7 +469,7 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
return;
}
if (sta && sta->plink_state == BLOCKED) {
if (sta && sta->plink_state == PLINK_BLOCKED) {
rcu_read_unlock();
return;
}
@ -529,7 +530,7 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
event = CNF_ACPT;
break;
case PLINK_CLOSE:
if (sta->plink_state == ESTAB)
if (sta->plink_state == PLINK_ESTAB)
/* Do not check for llid or plid. This does not
* follow the standard but since multiple plinks
* per sta are not supported, it is necessary in
@ -562,14 +563,14 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
reason = 0;
switch (sta->plink_state) {
/* spin_unlock as soon as state is updated at each case */
case LISTEN:
case PLINK_LISTEN:
switch (event) {
case CLS_ACPT:
mesh_plink_fsm_restart(sta);
spin_unlock_bh(&sta->plink_lock);
break;
case OPN_ACPT:
sta->plink_state = OPN_RCVD;
sta->plink_state = PLINK_OPN_RCVD;
sta->plid = plid;
get_random_bytes(&llid, 2);
sta->llid = llid;
@ -586,7 +587,7 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
}
break;
case OPN_SNT:
case PLINK_OPN_SNT:
switch (event) {
case OPN_RJCT:
case CNF_RJCT:
@ -595,7 +596,7 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
if (!reason)
reason = cpu_to_le16(MESH_CLOSE_RCVD);
sta->reason = reason;
sta->plink_state = HOLDING;
sta->plink_state = PLINK_HOLDING;
if (!mod_plink_timer(sta,
dot11MeshHoldingTimeout(sdata)))
sta->ignore_plink_timer = true;
@ -607,7 +608,7 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
break;
case OPN_ACPT:
/* retry timer is left untouched */
sta->plink_state = OPN_RCVD;
sta->plink_state = PLINK_OPN_RCVD;
sta->plid = plid;
llid = sta->llid;
spin_unlock_bh(&sta->plink_lock);
@ -615,7 +616,7 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
plid, 0);
break;
case CNF_ACPT:
sta->plink_state = CNF_RCVD;
sta->plink_state = PLINK_CNF_RCVD;
if (!mod_plink_timer(sta,
dot11MeshConfirmTimeout(sdata)))
sta->ignore_plink_timer = true;
@ -628,7 +629,7 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
}
break;
case OPN_RCVD:
case PLINK_OPN_RCVD:
switch (event) {
case OPN_RJCT:
case CNF_RJCT:
@ -637,7 +638,7 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
if (!reason)
reason = cpu_to_le16(MESH_CLOSE_RCVD);
sta->reason = reason;
sta->plink_state = HOLDING;
sta->plink_state = PLINK_HOLDING;
if (!mod_plink_timer(sta,
dot11MeshHoldingTimeout(sdata)))
sta->ignore_plink_timer = true;
@ -655,7 +656,7 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
break;
case CNF_ACPT:
del_timer(&sta->plink_timer);
sta->plink_state = ESTAB;
sta->plink_state = PLINK_ESTAB;
mesh_plink_inc_estab_count(sdata);
spin_unlock_bh(&sta->plink_lock);
mpl_dbg("Mesh plink with %s ESTABLISHED\n",
@ -667,7 +668,7 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
}
break;
case CNF_RCVD:
case PLINK_CNF_RCVD:
switch (event) {
case OPN_RJCT:
case CNF_RJCT:
@ -676,7 +677,7 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
if (!reason)
reason = cpu_to_le16(MESH_CLOSE_RCVD);
sta->reason = reason;
sta->plink_state = HOLDING;
sta->plink_state = PLINK_HOLDING;
if (!mod_plink_timer(sta,
dot11MeshHoldingTimeout(sdata)))
sta->ignore_plink_timer = true;
@ -688,7 +689,7 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
break;
case OPN_ACPT:
del_timer(&sta->plink_timer);
sta->plink_state = ESTAB;
sta->plink_state = PLINK_ESTAB;
mesh_plink_inc_estab_count(sdata);
spin_unlock_bh(&sta->plink_lock);
mpl_dbg("Mesh plink with %s ESTABLISHED\n",
@ -702,13 +703,13 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
}
break;
case ESTAB:
case PLINK_ESTAB:
switch (event) {
case CLS_ACPT:
reason = cpu_to_le16(MESH_CLOSE_RCVD);
sta->reason = reason;
__mesh_plink_deactivate(sta);
sta->plink_state = HOLDING;
sta->plink_state = PLINK_HOLDING;
llid = sta->llid;
mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
spin_unlock_bh(&sta->plink_lock);
@ -726,7 +727,7 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
break;
}
break;
case HOLDING:
case PLINK_HOLDING:
switch (event) {
case CLS_ACPT:
if (del_timer(&sta->plink_timer))
@ -749,8 +750,8 @@ void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
}
break;
default:
/* should not get here, BLOCKED is dealt with at the beggining
* of the function
/* should not get here, PLINK_BLOCKED is dealt with at the
* beggining of the function
*/
spin_unlock_bh(&sta->plink_lock);
break;

2
net/mac80211/rx.c
View file

@ -411,7 +411,7 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
* establisment frame, beacon or probe, drop the frame.
*/
if (!rx->sta || sta_plink_state(rx->sta) != ESTAB) {
if (!rx->sta || sta_plink_state(rx->sta) != PLINK_ESTAB) {
struct ieee80211_mgmt *mgmt;
if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT)

2
net/mac80211/sta_info.c
View file

@ -248,7 +248,7 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
#ifdef CONFIG_MAC80211_MESH
sta->plink_state = LISTEN;
sta->plink_state = PLINK_LISTEN;
spin_lock_init(&sta->plink_lock);
init_timer(&sta->plink_timer);
#endif

31
net/mac80211/sta_info.h
View file

@ -106,14 +106,27 @@ struct tid_ampdu_rx {
struct timer_list session_timer;
};
/**
* enum plink_state - state of a mesh peer link finite state machine
*
* @PLINK_LISTEN: initial state, considered the implicit state of non existant
* mesh peer links
* @PLINK_OPN_SNT: mesh plink open frame has been sent to this mesh peer
* @PLINK_OPN_RCVD: mesh plink open frame has been received from this mesh peer
* @PLINK_CNF_RCVD: mesh plink confirm frame has been received from this mesh
* peer
* @PLINK_ESTAB: mesh peer link is established
* @PLINK_HOLDING: mesh peer link is being closed or cancelled
* @PLINK_BLOCKED: all frames transmitted from this mesh plink are discarded
*/
enum plink_state {
LISTEN,
OPN_SNT,
OPN_RCVD,
CNF_RCVD,
ESTAB,
HOLDING,
BLOCKED
PLINK_LISTEN,
PLINK_OPN_SNT,
PLINK_OPN_RCVD,
PLINK_CNF_RCVD,
PLINK_ESTAB,
PLINK_HOLDING,
PLINK_BLOCKED
};
/**
@ -248,7 +261,7 @@ struct sta_info {
*/
__le16 llid; /* Local link ID */
__le16 plid; /* Peer link ID */
__le16 reason; /* Buffer for cancel reason on HOLDING state */
__le16 reason; /* Cancel reason on PLINK_HOLDING state */
u8 plink_retries; /* Retries in establishment */
bool ignore_plink_timer;
enum plink_state plink_state;
@ -280,7 +293,7 @@ static inline enum plink_state sta_plink_state(struct sta_info *sta)
#ifdef CONFIG_MAC80211_MESH
return sta->plink_state;
#endif
return LISTEN;
return PLINK_LISTEN;
}