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mac80211: refactor mesh peer rate handling

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To avoid passing supp_rates and basic_rates around all the time, just
derive these when needed in mesh_matches_local() and mesh_peer_init().

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Thomas Pedersen 2012-04-18 19:23:43 -07:00 committed by John W. Linville
parent 54ab1ffb6c
commit f743ff4907
3 changed files with 25 additions and 29 deletions
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19
net/mac80211/mesh.c
View File

@ -64,18 +64,18 @@ static void ieee80211_mesh_housekeeping_timer(unsigned long data)
/**
* mesh_matches_local - check if the config of a mesh point matches ours
*
* @ie: information elements of a management frame from the mesh peer
* @sdata: local mesh subif
* @basic_rates: BSSBasicRateSet of the peer candidate
* @ie: information elements of a management frame from the mesh peer
*
* This function checks if the mesh configuration of a mesh point matches the
* local mesh configuration, i.e. if both nodes belong to the same mesh network.
*/
bool mesh_matches_local(struct ieee802_11_elems *ie,
struct ieee80211_sub_if_data *sdata, u32 basic_rates)
bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
struct ieee802_11_elems *ie)
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct ieee80211_local *local = sdata->local;
u32 basic_rates = 0;
/*
* As support for each feature is added, check for matching
@ -96,6 +96,9 @@ bool mesh_matches_local(struct ieee802_11_elems *ie,
(ifmsh->mesh_auth_id == ie->mesh_config->meshconf_auth)))
goto mismatch;
ieee80211_sta_get_rates(local, ie, local->oper_channel->band,
&basic_rates);
if (sdata->vif.bss_conf.basic_rates != basic_rates)
goto mismatch;
@ -630,7 +633,6 @@ static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct ieee802_11_elems elems;
struct ieee80211_channel *channel;
u32 supp_rates = 0, basic_rates = 0;
size_t baselen;
int freq;
enum ieee80211_band band = rx_status->band;
@ -661,12 +663,9 @@ static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
return;
supp_rates = ieee80211_sta_get_rates(local, &elems,
band, &basic_rates);
if (elems.mesh_id && elems.mesh_config &&
mesh_matches_local(&elems, sdata, basic_rates))
mesh_neighbour_update(mgmt->sa, supp_rates, sdata, &elems);
mesh_matches_local(sdata, &elems))
mesh_neighbour_update(sdata, mgmt->sa, &elems);
if (ifmsh->sync_ops)
ifmsh->sync_ops->rx_bcn_presp(sdata,

10
net/mac80211/mesh.h
View File

@ -222,8 +222,8 @@ int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
char *addr6);
int mesh_rmc_check(u8 *addr, struct ieee80211s_hdr *mesh_hdr,
struct ieee80211_sub_if_data *sdata);
bool mesh_matches_local(struct ieee802_11_elems *ie,
struct ieee80211_sub_if_data *sdata, u32 basic_rates);
bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
struct ieee802_11_elems *ie);
void mesh_ids_set_default(struct ieee80211_if_mesh *mesh);
void mesh_mgmt_ies_add(struct sk_buff *skb,
struct ieee80211_sub_if_data *sdata);
@ -276,9 +276,9 @@ int mesh_path_add_gate(struct mesh_path *mpath);
int mesh_path_send_to_gates(struct mesh_path *mpath);
int mesh_gate_num(struct ieee80211_sub_if_data *sdata);
/* Mesh plinks */
void mesh_neighbour_update(u8 *hw_addr, u32 rates,
struct ieee80211_sub_if_data *sdata,
struct ieee802_11_elems *ie);
void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
u8 *hw_addr,
struct ieee802_11_elems *ie);
bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie);
void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata);
void mesh_plink_broken(struct sta_info *sta);

25
net/mac80211/mesh_plink.c
View File

@ -268,20 +268,22 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
*
* @sdata: local meshif
* @addr: peer's address
* @rates: station's supported rates
* @elems: IEs from beacon or mesh peering frame
*
* call under RCU
*/
static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
u8 *addr, u32 rates,
u8 *addr,
struct ieee802_11_elems *elems)
{
struct ieee80211_local *local = sdata->local;
enum ieee80211_band band = local->oper_channel->band;
struct ieee80211_supported_band *sband;
u32 rates, basic_rates = 0;
struct sta_info *sta;
sband = local->hw.wiphy->bands[local->oper_channel->band];
sband = local->hw.wiphy->bands[band];
rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates);
sta = sta_info_get(sdata, addr);
if (!sta) {
@ -292,7 +294,7 @@ static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
spin_lock_bh(&sta->lock);
sta->last_rx = jiffies;
sta->sta.supp_rates[local->hw.conf.channel->band] = rates;
sta->sta.supp_rates[band] = rates;
if (elems->ht_cap_elem)
ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
elems->ht_cap_elem,
@ -306,8 +308,8 @@ static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
return sta;
}
void mesh_neighbour_update(u8 *hw_addr, u32 rates,
struct ieee80211_sub_if_data *sdata,
void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
u8 *hw_addr,
struct ieee802_11_elems *elems)
{
struct sta_info *sta;
@ -322,7 +324,7 @@ void mesh_neighbour_update(u8 *hw_addr, u32 rates,
}
rcu_read_lock();
sta = mesh_peer_init(sdata, hw_addr, rates, elems);
sta = mesh_peer_init(sdata, hw_addr, elems);
if (!sta)
goto out;
@ -479,7 +481,6 @@ void mesh_plink_block(struct sta_info *sta)
void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt,
size_t len, struct ieee80211_rx_status *rx_status)
{
struct ieee80211_local *local = sdata->local;
struct ieee802_11_elems elems;
struct sta_info *sta;
enum plink_event event;
@ -488,7 +489,6 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
bool deactivated, matches_local = true;
u8 ie_len;
u8 *baseaddr;
u32 rates, basic_rates = 0;
__le16 plid, llid, reason;
#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
static const char *mplstates[] = {
@ -583,11 +583,8 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
/* Now we will figure out the appropriate event... */
event = PLINK_UNDEFINED;
rates = ieee80211_sta_get_rates(local, &elems,
rx_status->band, &basic_rates);
if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
(!mesh_matches_local(&elems, sdata, basic_rates))) {
!mesh_matches_local(sdata, &elems)) {
matches_local = false;
switch (ftype) {
case WLAN_SP_MESH_PEERING_OPEN:
@ -660,7 +657,7 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
if (event == OPN_ACPT) {
/* allocate sta entry if necessary and update info */
sta = mesh_peer_init(sdata, mgmt->sa, rates, &elems);
sta = mesh_peer_init(sdata, mgmt->sa, &elems);
if (!sta) {
mpl_dbg("Mesh plink: failed to init peer!\n");
rcu_read_unlock();