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Diffstat (limited to 'net/mac80211/tx.c')
-rw-r--r--net/mac80211/tx.c88
1 files changed, 47 insertions, 41 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 6cd3aeba870f..4a7a714de79e 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -4598,13 +4598,14 @@ void ieee80211_tx_pending(struct tasklet_struct *t)
/* functions for drivers to get certain frames */
static void __ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_link_data *link,
struct ps_data *ps, struct sk_buff *skb,
- bool is_template, unsigned int link_id)
+ bool is_template)
{
u8 *pos, *tim;
int aid0 = 0;
int i, have_bits = 0, n1, n2;
- struct ieee80211_bss_conf *link_conf = sdata->vif.link_conf[link_id];
+ struct ieee80211_bss_conf *link_conf = link->conf;
/* Generate bitmap for TIM only if there are any STAs in power save
* mode. */
@@ -4664,8 +4665,9 @@ static void __ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
}
static int ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_link_data *link,
struct ps_data *ps, struct sk_buff *skb,
- bool is_template, unsigned int link_id)
+ bool is_template)
{
struct ieee80211_local *local = sdata->local;
@@ -4677,12 +4679,10 @@ static int ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
* of the tim bitmap in mac80211 and the driver.
*/
if (local->tim_in_locked_section) {
- __ieee80211_beacon_add_tim(sdata, ps, skb, is_template,
- link_id);
+ __ieee80211_beacon_add_tim(sdata, link, ps, skb, is_template);
} else {
spin_lock_bh(&local->tim_lock);
- __ieee80211_beacon_add_tim(sdata, ps, skb, is_template,
- link_id);
+ __ieee80211_beacon_add_tim(sdata, link, ps, skb, is_template);
spin_unlock_bh(&local->tim_lock);
}
@@ -4691,7 +4691,7 @@ static int ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
static void ieee80211_set_beacon_cntdwn(struct ieee80211_sub_if_data *sdata,
struct beacon_data *beacon,
- unsigned int link_id)
+ struct ieee80211_link_data *link)
{
u8 *beacon_data, count, max_count = 1;
struct probe_resp *resp;
@@ -4716,20 +4716,17 @@ static void ieee80211_set_beacon_cntdwn(struct ieee80211_sub_if_data *sdata,
return;
}
- rcu_read_lock();
- resp = rcu_dereference(sdata->link[link_id]->u.ap.probe_resp);
+ resp = rcu_dereference(link->u.ap.probe_resp);
bcn_offsets = beacon->cntdwn_counter_offsets;
count = beacon->cntdwn_current_counter;
- if (sdata->vif.link_conf[link_id]->csa_active)
+ if (link->conf->csa_active)
max_count = IEEE80211_MAX_CNTDWN_COUNTERS_NUM;
for (i = 0; i < max_count; ++i) {
if (bcn_offsets[i]) {
- if (WARN_ON_ONCE(bcn_offsets[i] >= beacon_data_len)) {
- rcu_read_unlock();
+ if (WARN_ON_ONCE(bcn_offsets[i] >= beacon_data_len))
return;
- }
beacon_data[bcn_offsets[i]] = count;
}
@@ -4739,7 +4736,6 @@ static void ieee80211_set_beacon_cntdwn(struct ieee80211_sub_if_data *sdata,
resp->data[resp_offsets[i]] = count;
}
}
- rcu_read_unlock();
}
static u8 __ieee80211_beacon_update_cntdwn(struct beacon_data *beacon)
@@ -4863,14 +4859,14 @@ EXPORT_SYMBOL(ieee80211_beacon_cntdwn_is_complete);
static int ieee80211_beacon_protect(struct sk_buff *skb,
struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
- unsigned int link_id)
+ struct ieee80211_link_data *link)
{
ieee80211_tx_result res;
struct ieee80211_tx_data tx;
struct sk_buff *check_skb;
memset(&tx, 0, sizeof(tx));
- tx.key = rcu_dereference(sdata->link[link_id]->default_beacon_key);
+ tx.key = rcu_dereference(link->default_beacon_key);
if (!tx.key)
return 0;
tx.local = local;
@@ -4890,12 +4886,12 @@ static int ieee80211_beacon_protect(struct sk_buff *skb,
static void
ieee80211_beacon_get_finish(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
+ struct ieee80211_link_data *link,
struct ieee80211_mutable_offsets *offs,
struct beacon_data *beacon,
struct sk_buff *skb,
struct ieee80211_chanctx_conf *chanctx_conf,
- u16 csa_off_base,
- unsigned int link_id)
+ u16 csa_off_base)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
@@ -4926,7 +4922,7 @@ ieee80211_beacon_get_finish(struct ieee80211_hw *hw,
memset(&txrc, 0, sizeof(txrc));
txrc.hw = hw;
txrc.sband = local->hw.wiphy->bands[band];
- txrc.bss_conf = sdata->vif.link_conf[link_id];
+ txrc.bss_conf = link->conf;
txrc.skb = skb;
txrc.reported_rate.idx = -1;
if (sdata->beacon_rate_set && sdata->beacon_rateidx_mask[band])
@@ -4958,11 +4954,11 @@ ieee80211_beacon_add_mbssid(struct sk_buff *skb, struct beacon_data *beacon)
static struct sk_buff *
ieee80211_beacon_get_ap(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
+ struct ieee80211_link_data *link,
struct ieee80211_mutable_offsets *offs,
bool is_template,
struct beacon_data *beacon,
- struct ieee80211_chanctx_conf *chanctx_conf,
- unsigned int link_id)
+ struct ieee80211_chanctx_conf *chanctx_conf)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
@@ -4975,7 +4971,7 @@ ieee80211_beacon_get_ap(struct ieee80211_hw *hw,
if (!is_template)
ieee80211_beacon_update_cntdwn(vif);
- ieee80211_set_beacon_cntdwn(sdata, beacon, link_id);
+ ieee80211_set_beacon_cntdwn(sdata, beacon, link);
}
/* headroom, head length,
@@ -4991,7 +4987,7 @@ ieee80211_beacon_get_ap(struct ieee80211_hw *hw,
skb_reserve(skb, local->tx_headroom);
skb_put_data(skb, beacon->head, beacon->head_len);
- ieee80211_beacon_add_tim(sdata, &ap->ps, skb, is_template, link_id);
+ ieee80211_beacon_add_tim(sdata, link, &ap->ps, skb, is_template);
if (offs) {
offs->tim_offset = beacon->head_len;
@@ -5010,11 +5006,11 @@ ieee80211_beacon_get_ap(struct ieee80211_hw *hw,
if (beacon->tail)
skb_put_data(skb, beacon->tail, beacon->tail_len);
- if (ieee80211_beacon_protect(skb, local, sdata, link_id) < 0)
+ if (ieee80211_beacon_protect(skb, local, sdata, link) < 0)
return NULL;
- ieee80211_beacon_get_finish(hw, vif, offs, beacon, skb, chanctx_conf,
- csa_off_base, link_id);
+ ieee80211_beacon_get_finish(hw, vif, link, offs, beacon, skb,
+ chanctx_conf, csa_off_base);
return skb;
}
@@ -5030,12 +5026,16 @@ __ieee80211_beacon_get(struct ieee80211_hw *hw,
struct sk_buff *skb = NULL;
struct ieee80211_sub_if_data *sdata = NULL;
struct ieee80211_chanctx_conf *chanctx_conf;
+ struct ieee80211_link_data *link;
rcu_read_lock();
sdata = vif_to_sdata(vif);
+ link = rcu_dereference(sdata->link[link_id]);
+ if (!link)
+ goto out;
chanctx_conf =
- rcu_dereference(sdata->vif.link_conf[link_id]->chanctx_conf);
+ rcu_dereference(link->conf->chanctx_conf);
if (!ieee80211_sdata_running(sdata) || !chanctx_conf)
goto out;
@@ -5044,12 +5044,12 @@ __ieee80211_beacon_get(struct ieee80211_hw *hw,
memset(offs, 0, sizeof(*offs));
if (sdata->vif.type == NL80211_IFTYPE_AP) {
- beacon = rcu_dereference(sdata->link[link_id]->u.ap.beacon);
+ beacon = rcu_dereference(link->u.ap.beacon);
if (!beacon)
goto out;
- skb = ieee80211_beacon_get_ap(hw, vif, offs, is_template,
- beacon, chanctx_conf, link_id);
+ skb = ieee80211_beacon_get_ap(hw, vif, link, offs, is_template,
+ beacon, chanctx_conf);
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
struct ieee80211_hdr *hdr;
@@ -5062,7 +5062,7 @@ __ieee80211_beacon_get(struct ieee80211_hw *hw,
if (!is_template)
__ieee80211_beacon_update_cntdwn(beacon);
- ieee80211_set_beacon_cntdwn(sdata, beacon, link_id);
+ ieee80211_set_beacon_cntdwn(sdata, beacon, link);
}
skb = dev_alloc_skb(local->tx_headroom + beacon->head_len +
@@ -5076,8 +5076,8 @@ __ieee80211_beacon_get(struct ieee80211_hw *hw,
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_BEACON);
- ieee80211_beacon_get_finish(hw, vif, offs, beacon, skb,
- chanctx_conf, 0, link_id);
+ ieee80211_beacon_get_finish(hw, vif, link, offs, beacon, skb,
+ chanctx_conf, 0);
} else if (ieee80211_vif_is_mesh(&sdata->vif)) {
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
@@ -5094,7 +5094,7 @@ __ieee80211_beacon_get(struct ieee80211_hw *hw,
*/
__ieee80211_beacon_update_cntdwn(beacon);
- ieee80211_set_beacon_cntdwn(sdata, beacon, link_id);
+ ieee80211_set_beacon_cntdwn(sdata, beacon, link);
}
if (ifmsh->sync_ops)
@@ -5109,8 +5109,8 @@ __ieee80211_beacon_get(struct ieee80211_hw *hw,
goto out;
skb_reserve(skb, local->tx_headroom);
skb_put_data(skb, beacon->head, beacon->head_len);
- ieee80211_beacon_add_tim(sdata, &ifmsh->ps, skb, is_template,
- link_id);
+ ieee80211_beacon_add_tim(sdata, link, &ifmsh->ps, skb,
+ is_template);
if (offs) {
offs->tim_offset = beacon->head_len;
@@ -5118,8 +5118,8 @@ __ieee80211_beacon_get(struct ieee80211_hw *hw,
}
skb_put_data(skb, beacon->tail, beacon->tail_len);
- ieee80211_beacon_get_finish(hw, vif, offs, beacon, skb,
- chanctx_conf, 0, link_id);
+ ieee80211_beacon_get_finish(hw, vif, link, offs, beacon, skb,
+ chanctx_conf, 0);
} else {
WARN_ON(1);
goto out;
@@ -5616,11 +5616,17 @@ void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
link = IEEE80211_LINK_UNSPECIFIED;
} else {
/* otherwise must be addressed from a link */
+ rcu_read_lock();
for (link = 0; link < ARRAY_SIZE(sdata->vif.link_conf); link++) {
- if (memcmp(sdata->vif.link_conf[link]->addr,
- hdr->addr2, ETH_ALEN) == 0)
+ struct ieee80211_bss_conf *link_conf;
+
+ link_conf = rcu_dereference(sdata->vif.link_conf[link]);
+ if (!link_conf)
+ continue;
+ if (memcmp(link_conf->addr, hdr->addr2, ETH_ALEN) == 0)
break;
}
+ rcu_read_unlock();
if (WARN_ON_ONCE(link == ARRAY_SIZE(sdata->vif.link_conf)))
link = ffs(sdata->vif.valid_links) - 1;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-26 18:09:56 +0000