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Diffstat (limited to 'net/mac80211/chan.c')
-rw-r--r--net/mac80211/chan.c410
1 files changed, 247 insertions, 163 deletions
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index 7f8799fd673e..d0bfb1216401 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -12,15 +12,131 @@
#include "driver-ops.h"
#include "rate.h"
+struct ieee80211_chanctx_user_iter {
+ struct ieee80211_chan_req *chanreq;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_link_data *link;
+ enum nl80211_iftype iftype;
+ bool reserved, radar_required, done;
+ enum {
+ CHANCTX_ITER_POS_ASSIGNED,
+ CHANCTX_ITER_POS_RESERVED,
+ CHANCTX_ITER_POS_DONE,
+ } per_link;
+};
+
+enum ieee80211_chanctx_iter_type {
+ CHANCTX_ITER_ALL,
+ CHANCTX_ITER_RESERVED,
+ CHANCTX_ITER_ASSIGNED,
+};
+
+static void ieee80211_chanctx_user_iter_next(struct ieee80211_local *local,
+ struct ieee80211_chanctx *ctx,
+ struct ieee80211_chanctx_user_iter *iter,
+ enum ieee80211_chanctx_iter_type type,
+ bool start)
+{
+ lockdep_assert_wiphy(local->hw.wiphy);
+
+ if (start) {
+ memset(iter, 0, sizeof(*iter));
+ goto next_interface;
+ }
+
+next_link:
+ for (int link_id = iter->link ? iter->link->link_id : 0;
+ link_id < ARRAY_SIZE(iter->sdata->link);
+ link_id++) {
+ struct ieee80211_link_data *link;
+
+ link = sdata_dereference(iter->sdata->link[link_id],
+ iter->sdata);
+ if (!link)
+ continue;
+
+ switch (iter->per_link) {
+ case CHANCTX_ITER_POS_ASSIGNED:
+ iter->per_link = CHANCTX_ITER_POS_RESERVED;
+ if (type != CHANCTX_ITER_RESERVED &&
+ rcu_access_pointer(link->conf->chanctx_conf) == &ctx->conf) {
+ iter->link = link;
+ iter->reserved = false;
+ iter->radar_required = link->radar_required;
+ iter->chanreq = &link->conf->chanreq;
+ return;
+ }
+ fallthrough;
+ case CHANCTX_ITER_POS_RESERVED:
+ iter->per_link = CHANCTX_ITER_POS_DONE;
+ if (type != CHANCTX_ITER_ASSIGNED &&
+ link->reserved_chanctx == ctx) {
+ iter->link = link;
+ iter->reserved = true;
+ iter->radar_required =
+ link->reserved_radar_required;
+
+ iter->chanreq = &link->reserved;
+ return;
+ }
+ fallthrough;
+ case CHANCTX_ITER_POS_DONE:
+ iter->per_link = CHANCTX_ITER_POS_ASSIGNED;
+ continue;
+ }
+ }
+
+next_interface:
+ /* next (or first) interface */
+ iter->sdata = list_prepare_entry(iter->sdata, &local->interfaces, list);
+ list_for_each_entry_continue(iter->sdata, &local->interfaces, list) {
+ /* AP_VLAN has a chanctx pointer but follows AP */
+ if (iter->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+ continue;
+
+ iter->link = NULL;
+ iter->per_link = CHANCTX_ITER_POS_ASSIGNED;
+ iter->iftype = iter->sdata->vif.type;
+ goto next_link;
+ }
+
+ iter->done = true;
+}
+
+#define for_each_chanctx_user_assigned(local, ctx, iter) \
+ for (ieee80211_chanctx_user_iter_next(local, ctx, iter, \
+ CHANCTX_ITER_ASSIGNED, \
+ true); \
+ !((iter)->done); \
+ ieee80211_chanctx_user_iter_next(local, ctx, iter, \
+ CHANCTX_ITER_ASSIGNED, \
+ false))
+
+#define for_each_chanctx_user_reserved(local, ctx, iter) \
+ for (ieee80211_chanctx_user_iter_next(local, ctx, iter, \
+ CHANCTX_ITER_RESERVED, \
+ true); \
+ !((iter)->done); \
+ ieee80211_chanctx_user_iter_next(local, ctx, iter, \
+ CHANCTX_ITER_RESERVED, \
+ false))
+
+#define for_each_chanctx_user_all(local, ctx, iter) \
+ for (ieee80211_chanctx_user_iter_next(local, ctx, iter, \
+ CHANCTX_ITER_ALL, \
+ true); \
+ !((iter)->done); \
+ ieee80211_chanctx_user_iter_next(local, ctx, iter, \
+ CHANCTX_ITER_ALL, \
+ false))
+
static int ieee80211_chanctx_num_assigned(struct ieee80211_local *local,
struct ieee80211_chanctx *ctx)
{
- struct ieee80211_link_data *link;
+ struct ieee80211_chanctx_user_iter iter;
int num = 0;
- lockdep_assert_wiphy(local->hw.wiphy);
-
- list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list)
+ for_each_chanctx_user_assigned(local, ctx, &iter)
num++;
return num;
@@ -29,12 +145,10 @@ static int ieee80211_chanctx_num_assigned(struct ieee80211_local *local,
static int ieee80211_chanctx_num_reserved(struct ieee80211_local *local,
struct ieee80211_chanctx *ctx)
{
- struct ieee80211_link_data *link;
+ struct ieee80211_chanctx_user_iter iter;
int num = 0;
- lockdep_assert_wiphy(local->hw.wiphy);
-
- list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list)
+ for_each_chanctx_user_reserved(local, ctx, &iter)
num++;
return num;
@@ -43,8 +157,13 @@ static int ieee80211_chanctx_num_reserved(struct ieee80211_local *local,
int ieee80211_chanctx_refcount(struct ieee80211_local *local,
struct ieee80211_chanctx *ctx)
{
- return ieee80211_chanctx_num_assigned(local, ctx) +
- ieee80211_chanctx_num_reserved(local, ctx);
+ struct ieee80211_chanctx_user_iter iter;
+ int num = 0;
+
+ for_each_chanctx_user_all(local, ctx, &iter)
+ num++;
+
+ return num;
}
static int ieee80211_num_chanctx(struct ieee80211_local *local, int radio_idx)
@@ -143,15 +262,15 @@ ieee80211_chanctx_reserved_chanreq(struct ieee80211_local *local,
const struct ieee80211_chan_req *req,
struct ieee80211_chan_req *tmp)
{
- struct ieee80211_link_data *link;
+ struct ieee80211_chanctx_user_iter iter;
lockdep_assert_wiphy(local->hw.wiphy);
if (WARN_ON(!req))
return NULL;
- list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list) {
- req = ieee80211_chanreq_compatible(&link->reserved, req, tmp);
+ for_each_chanctx_user_reserved(local, ctx, &iter) {
+ req = ieee80211_chanreq_compatible(iter.chanreq, req, tmp);
if (!req)
break;
}
@@ -165,18 +284,16 @@ ieee80211_chanctx_non_reserved_chandef(struct ieee80211_local *local,
const struct ieee80211_chan_req *compat,
struct ieee80211_chan_req *tmp)
{
- struct ieee80211_link_data *link;
const struct ieee80211_chan_req *comp_def = compat;
+ struct ieee80211_chanctx_user_iter iter;
lockdep_assert_wiphy(local->hw.wiphy);
- list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) {
- struct ieee80211_bss_conf *link_conf = link->conf;
-
- if (link->reserved_chanctx)
+ for_each_chanctx_user_assigned(local, ctx, &iter) {
+ if (iter.link->reserved_chanctx)
continue;
- comp_def = ieee80211_chanreq_compatible(&link_conf->chanreq,
+ comp_def = ieee80211_chanreq_compatible(iter.chanreq,
comp_def, tmp);
if (!comp_def)
break;
@@ -200,7 +317,7 @@ ieee80211_chanctx_can_reserve(struct ieee80211_local *local,
if (!ieee80211_chanctx_non_reserved_chandef(local, ctx, req, &tmp))
return false;
- if (!list_empty(&ctx->reserved_links) &&
+ if (ieee80211_chanctx_num_reserved(local, ctx) != 0 &&
ieee80211_chanctx_reserved_chanreq(local, ctx, req, &tmp))
return true;
@@ -389,10 +506,10 @@ ieee80211_get_chanctx_max_required_bw(struct ieee80211_local *local,
* channel context.
*/
static u32
-_ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
- struct ieee80211_chanctx *ctx,
- struct ieee80211_link_data *rsvd_for,
- bool check_reserved)
+__ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
+ struct ieee80211_chanctx *ctx,
+ struct ieee80211_link_data *rsvd_for,
+ bool check_reserved)
{
enum nl80211_chan_width max_bw;
struct cfg80211_chan_def min_def;
@@ -497,13 +614,14 @@ static void ieee80211_chan_bw_change(struct ieee80211_local *local,
* the max of min required widths of all the interfaces bound to this
* channel context.
*/
-void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
- struct ieee80211_chanctx *ctx,
- struct ieee80211_link_data *rsvd_for,
- bool check_reserved)
+static void
+_ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
+ struct ieee80211_chanctx *ctx,
+ struct ieee80211_link_data *rsvd_for,
+ bool check_reserved)
{
- u32 changed = _ieee80211_recalc_chanctx_min_def(local, ctx, rsvd_for,
- check_reserved);
+ u32 changed = __ieee80211_recalc_chanctx_min_def(local, ctx, rsvd_for,
+ check_reserved);
if (!changed)
return;
@@ -517,6 +635,12 @@ void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
ieee80211_chan_bw_change(local, ctx, false, false);
}
+void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
+ struct ieee80211_chanctx *ctx)
+{
+ _ieee80211_recalc_chanctx_min_def(local, ctx, NULL, false);
+}
+
static void _ieee80211_change_chanctx(struct ieee80211_local *local,
struct ieee80211_chanctx *ctx,
struct ieee80211_chanctx *old_ctx,
@@ -530,8 +654,19 @@ static void _ieee80211_change_chanctx(struct ieee80211_local *local,
};
u32 changed = 0;
- /* expected to handle only 20/40/80/160/320 channel widths */
+ /* 5/10 MHz not handled here */
switch (chandef->width) {
+ case NL80211_CHAN_WIDTH_1:
+ case NL80211_CHAN_WIDTH_2:
+ case NL80211_CHAN_WIDTH_4:
+ case NL80211_CHAN_WIDTH_8:
+ case NL80211_CHAN_WIDTH_16:
+ /*
+ * mac80211 currently only supports sharing identical
+ * chanctx's for S1G interfaces.
+ */
+ WARN_ON(!ieee80211_chanreq_identical(&ctx_req, chanreq));
+ return;
case NL80211_CHAN_WIDTH_20_NOHT:
case NL80211_CHAN_WIDTH_20:
case NL80211_CHAN_WIDTH_40:
@@ -551,7 +686,7 @@ static void _ieee80211_change_chanctx(struct ieee80211_local *local,
ieee80211_chan_bw_change(local, old_ctx, false, true);
if (ieee80211_chanreq_identical(&ctx_req, chanreq)) {
- ieee80211_recalc_chanctx_min_def(local, ctx, rsvd_for, false);
+ _ieee80211_recalc_chanctx_min_def(local, ctx, rsvd_for, false);
return;
}
@@ -572,7 +707,8 @@ static void _ieee80211_change_chanctx(struct ieee80211_local *local,
ctx->conf.ap = chanreq->ap;
/* check if min chanctx also changed */
- changed |= _ieee80211_recalc_chanctx_min_def(local, ctx, rsvd_for, false);
+ changed |= __ieee80211_recalc_chanctx_min_def(local, ctx, rsvd_for,
+ false);
ieee80211_add_wbrf(local, &ctx->conf.def);
@@ -633,8 +769,6 @@ ieee80211_find_chanctx(struct ieee80211_local *local,
* context to actually be removed.
*/
link->reserved_chanctx = ctx;
- list_add(&link->reserved_chanctx_list,
- &ctx->reserved_links);
ieee80211_change_chanctx(local, ctx, ctx, compat);
@@ -675,17 +809,13 @@ static bool
ieee80211_chanctx_radar_required(struct ieee80211_local *local,
struct ieee80211_chanctx *ctx)
{
- struct ieee80211_chanctx_conf *conf = &ctx->conf;
- struct ieee80211_link_data *link;
+ struct ieee80211_chanctx_user_iter iter;
lockdep_assert_wiphy(local->hw.wiphy);
- for_each_sdata_link(local, link) {
- if (rcu_access_pointer(link->conf->chanctx_conf) != conf)
- continue;
- if (!link->radar_required)
- continue;
- return true;
+ for_each_chanctx_user_assigned(local, ctx, &iter) {
+ if (iter.radar_required)
+ return true;
}
return false;
@@ -705,8 +835,6 @@ ieee80211_alloc_chanctx(struct ieee80211_local *local,
if (!ctx)
return NULL;
- INIT_LIST_HEAD(&ctx->assigned_links);
- INIT_LIST_HEAD(&ctx->reserved_links);
ctx->conf.def = chanreq->oper;
ctx->conf.ap = chanreq->ap;
ctx->conf.rx_chains_static = 1;
@@ -715,7 +843,7 @@ ieee80211_alloc_chanctx(struct ieee80211_local *local,
ctx->conf.radar_enabled = false;
ctx->conf.radio_idx = radio_idx;
ctx->radar_detected = false;
- _ieee80211_recalc_chanctx_min_def(local, ctx, NULL, false);
+ __ieee80211_recalc_chanctx_min_def(local, ctx, NULL, false);
return ctx;
}
@@ -804,27 +932,17 @@ void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
{
struct ieee80211_chanctx_conf *conf = &ctx->conf;
const struct ieee80211_chan_req *compat = NULL;
- struct ieee80211_link_data *link;
+ struct ieee80211_chanctx_user_iter iter;
struct ieee80211_chan_req tmp;
struct sta_info *sta;
lockdep_assert_wiphy(local->hw.wiphy);
- for_each_sdata_link(local, link) {
- struct ieee80211_bss_conf *link_conf;
-
- if (link->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
- continue;
-
- link_conf = link->conf;
-
- if (rcu_access_pointer(link_conf->chanctx_conf) != conf)
- continue;
-
+ for_each_chanctx_user_assigned(local, ctx, &iter) {
if (!compat)
- compat = &link_conf->chanreq;
+ compat = iter.chanreq;
- compat = ieee80211_chanreq_compatible(&link_conf->chanreq,
+ compat = ieee80211_chanreq_compatible(iter.chanreq,
compat, &tmp);
if (WARN_ON_ONCE(!compat))
return;
@@ -837,6 +955,7 @@ void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
list_for_each_entry(sta, &local->sta_list, list) {
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct ieee80211_chan_req tdls_chanreq = {};
+ struct ieee80211_link_data *link;
int tdls_link_id;
if (!sta->uploaded ||
@@ -904,12 +1023,11 @@ static int ieee80211_assign_link_chanctx(struct ieee80211_link_data *link,
drv_unassign_vif_chanctx(local, sdata, link->conf, curr_ctx);
conf = NULL;
- list_del(&link->assigned_chanctx_list);
}
if (new_ctx) {
/* recalc considering the link we'll use it for now */
- ieee80211_recalc_chanctx_min_def(local, new_ctx, link, false);
+ _ieee80211_recalc_chanctx_min_def(local, new_ctx, link, false);
ret = drv_assign_vif_chanctx(local, sdata, link->conf, new_ctx);
if (assign_on_failure || !ret) {
@@ -919,9 +1037,6 @@ static int ieee80211_assign_link_chanctx(struct ieee80211_link_data *link,
/* succeeded, so commit it to the data structures */
conf = &new_ctx->conf;
- if (!local->in_reconfig)
- list_add(&link->assigned_chanctx_list,
- &new_ctx->assigned_links);
}
} else {
ret = 0;
@@ -933,12 +1048,12 @@ static int ieee80211_assign_link_chanctx(struct ieee80211_link_data *link,
ieee80211_recalc_chanctx_chantype(local, curr_ctx);
ieee80211_recalc_smps_chanctx(local, curr_ctx);
ieee80211_recalc_radar_chanctx(local, curr_ctx);
- ieee80211_recalc_chanctx_min_def(local, curr_ctx, NULL, false);
+ ieee80211_recalc_chanctx_min_def(local, curr_ctx);
}
if (new_ctx && ieee80211_chanctx_num_assigned(local, new_ctx) > 0) {
ieee80211_recalc_txpower(link, false);
- ieee80211_recalc_chanctx_min_def(local, new_ctx, NULL, false);
+ ieee80211_recalc_chanctx_min_def(local, new_ctx);
}
if (conf) {
@@ -971,21 +1086,21 @@ static int ieee80211_assign_link_chanctx(struct ieee80211_link_data *link,
void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
struct ieee80211_chanctx *chanctx)
{
+ struct ieee80211_chanctx_user_iter iter;
struct ieee80211_sub_if_data *sdata;
u8 rx_chains_static, rx_chains_dynamic;
- struct ieee80211_link_data *link;
lockdep_assert_wiphy(local->hw.wiphy);
rx_chains_static = 1;
rx_chains_dynamic = 1;
- for_each_sdata_link(local, link) {
+ for_each_chanctx_user_assigned(local, chanctx, &iter) {
u8 needed_static, needed_dynamic;
- switch (link->sdata->vif.type) {
+ switch (iter.iftype) {
case NL80211_IFTYPE_STATION:
- if (!link->sdata->u.mgd.associated)
+ if (!iter.sdata->u.mgd.associated)
continue;
break;
case NL80211_IFTYPE_MONITOR:
@@ -1001,26 +1116,23 @@ void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
continue;
}
- if (rcu_access_pointer(link->conf->chanctx_conf) != &chanctx->conf)
- continue;
-
- if (link->sdata->vif.type == NL80211_IFTYPE_MONITOR) {
+ if (iter.iftype == NL80211_IFTYPE_MONITOR) {
rx_chains_dynamic = rx_chains_static = local->rx_chains;
break;
}
- switch (link->smps_mode) {
+ switch (iter.link->smps_mode) {
default:
WARN_ONCE(1, "Invalid SMPS mode %d\n",
- link->smps_mode);
+ iter.link->smps_mode);
fallthrough;
case IEEE80211_SMPS_OFF:
- needed_static = link->needed_rx_chains;
- needed_dynamic = link->needed_rx_chains;
+ needed_static = iter.link->needed_rx_chains;
+ needed_dynamic = iter.link->needed_rx_chains;
break;
case IEEE80211_SMPS_DYNAMIC:
needed_static = 1;
- needed_dynamic = link->needed_rx_chains;
+ needed_dynamic = iter.link->needed_rx_chains;
break;
case IEEE80211_SMPS_STATIC:
needed_static = 1;
@@ -1108,7 +1220,6 @@ void ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link)
if (WARN_ON(!ctx))
return;
- list_del(&link->reserved_chanctx_list);
link->reserved_chanctx = NULL;
if (ieee80211_chanctx_refcount(sdata->local, ctx) == 0) {
@@ -1142,9 +1253,9 @@ ieee80211_replace_chanctx(struct ieee80211_local *local,
struct wiphy *wiphy = local->hw.wiphy;
const struct wiphy_radio *radio;
- if (!curr_ctx || (curr_ctx->replace_state ==
- IEEE80211_CHANCTX_WILL_BE_REPLACED) ||
- !list_empty(&curr_ctx->reserved_links)) {
+ if (!curr_ctx ||
+ curr_ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED ||
+ ieee80211_chanctx_num_reserved(local, curr_ctx) != 0) {
/*
* Another link already requested this context for a
* reservation. Find another one hoping all links assigned
@@ -1167,7 +1278,7 @@ ieee80211_replace_chanctx(struct ieee80211_local *local,
IEEE80211_CHANCTX_REPLACE_NONE)
continue;
- if (!list_empty(&ctx->reserved_links))
+ if (ieee80211_chanctx_num_reserved(local, ctx) != 0)
continue;
if (ctx->conf.radio_idx >= 0) {
@@ -1185,9 +1296,9 @@ ieee80211_replace_chanctx(struct ieee80211_local *local,
* If that's true then all available contexts already have reservations
* and cannot be used.
*/
- if (!curr_ctx || (curr_ctx->replace_state ==
- IEEE80211_CHANCTX_WILL_BE_REPLACED) ||
- !list_empty(&curr_ctx->reserved_links))
+ if (!curr_ctx ||
+ curr_ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED ||
+ ieee80211_chanctx_num_reserved(local, curr_ctx) != 0)
return ERR_PTR(-EBUSY);
new_ctx = ieee80211_alloc_chanctx(local, chanreq, mode, -1);
@@ -1267,7 +1378,6 @@ int ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
return PTR_ERR(new_ctx);
}
- list_add(&link->reserved_chanctx_list, &new_ctx->reserved_links);
link->reserved_chanctx = new_ctx;
link->reserved = *chanreq;
link->reserved_radar_required = radar_required;
@@ -1381,7 +1491,6 @@ ieee80211_link_use_reserved_reassign(struct ieee80211_link_data *link)
vif_chsw[0].new_ctx = &new_ctx->conf;
vif_chsw[0].link_conf = link->conf;
- list_del(&link->reserved_chanctx_list);
link->reserved_chanctx = NULL;
err = drv_switch_vif_chanctx(local, vif_chsw, 1,
@@ -1394,7 +1503,6 @@ ieee80211_link_use_reserved_reassign(struct ieee80211_link_data *link)
}
link->radar_required = link->reserved_radar_required;
- list_move(&link->assigned_chanctx_list, &new_ctx->assigned_links);
rcu_assign_pointer(link_conf->chanctx_conf, &new_ctx->conf);
if (sdata->vif.type == NL80211_IFTYPE_AP)
@@ -1405,7 +1513,7 @@ ieee80211_link_use_reserved_reassign(struct ieee80211_link_data *link)
if (ieee80211_chanctx_refcount(local, old_ctx) == 0)
ieee80211_free_chanctx(local, old_ctx, false);
- ieee80211_recalc_chanctx_min_def(local, new_ctx, NULL, false);
+ ieee80211_recalc_chanctx_min_def(local, new_ctx);
ieee80211_recalc_smps_chanctx(local, new_ctx);
ieee80211_recalc_radar_chanctx(local, new_ctx);
@@ -1451,7 +1559,6 @@ ieee80211_link_use_reserved_assign(struct ieee80211_link_data *link)
ieee80211_change_chanctx(local, new_ctx, new_ctx, chanreq);
- list_del(&link->reserved_chanctx_list);
link->reserved_chanctx = NULL;
err = ieee80211_assign_link_chanctx(link, new_ctx, false);
@@ -1497,7 +1604,6 @@ static int ieee80211_chsw_switch_vifs(struct ieee80211_local *local,
int n_vifs)
{
struct ieee80211_vif_chanctx_switch *vif_chsw;
- struct ieee80211_link_data *link;
struct ieee80211_chanctx *ctx, *old_ctx;
int i, err;
@@ -1509,6 +1615,8 @@ static int ieee80211_chsw_switch_vifs(struct ieee80211_local *local,
i = 0;
list_for_each_entry(ctx, &local->chanctx_list, list) {
+ struct ieee80211_chanctx_user_iter iter;
+
if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER)
continue;
@@ -1517,16 +1625,15 @@ static int ieee80211_chsw_switch_vifs(struct ieee80211_local *local,
goto out;
}
- list_for_each_entry(link, &ctx->reserved_links,
- reserved_chanctx_list) {
- if (!ieee80211_link_has_in_place_reservation(link))
+ for_each_chanctx_user_reserved(local, ctx, &iter) {
+ if (!ieee80211_link_has_in_place_reservation(iter.link))
continue;
- old_ctx = ieee80211_link_get_chanctx(link);
- vif_chsw[i].vif = &link->sdata->vif;
+ old_ctx = ieee80211_link_get_chanctx(iter.link);
+ vif_chsw[i].vif = &iter.sdata->vif;
vif_chsw[i].old_ctx = &old_ctx->conf;
vif_chsw[i].new_ctx = &ctx->conf;
- vif_chsw[i].link_conf = link->conf;
+ vif_chsw[i].link_conf = iter.link->conf;
i++;
}
@@ -1551,7 +1658,7 @@ static int ieee80211_chsw_switch_ctxs(struct ieee80211_local *local)
if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER)
continue;
- if (!list_empty(&ctx->replace_ctx->assigned_links))
+ if (ieee80211_chanctx_num_assigned(local, ctx) != 0)
continue;
ieee80211_del_chanctx(local, ctx->replace_ctx, false);
@@ -1568,7 +1675,7 @@ err:
if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER)
continue;
- if (!list_empty(&ctx->replace_ctx->assigned_links))
+ if (ieee80211_chanctx_num_assigned(local, ctx) != 0)
continue;
ieee80211_del_chanctx(local, ctx, false);
@@ -1603,7 +1710,7 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
*/
list_for_each_entry(ctx, &local->chanctx_list, list) {
- struct ieee80211_link_data *link;
+ struct ieee80211_chanctx_user_iter iter;
if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER)
continue;
@@ -1619,12 +1726,11 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
n_reserved = 0;
n_ready = 0;
- list_for_each_entry(link, &ctx->replace_ctx->assigned_links,
- assigned_chanctx_list) {
+ for_each_chanctx_user_assigned(local, ctx->replace_ctx, &iter) {
n_assigned++;
- if (link->reserved_chanctx) {
+ if (iter.link->reserved_chanctx) {
n_reserved++;
- if (link->reserved_ready)
+ if (iter.link->reserved_ready)
n_ready++;
}
}
@@ -1641,13 +1747,12 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
}
ctx->conf.radar_enabled = false;
- list_for_each_entry(link, &ctx->reserved_links,
- reserved_chanctx_list) {
- if (ieee80211_link_has_in_place_reservation(link) &&
- !link->reserved_ready)
+ for_each_chanctx_user_reserved(local, ctx, &iter) {
+ if (ieee80211_link_has_in_place_reservation(iter.link) &&
+ !iter.link->reserved_ready)
return -EAGAIN;
- old_ctx = ieee80211_link_get_chanctx(link);
+ old_ctx = ieee80211_link_get_chanctx(iter.link);
if (old_ctx) {
if (old_ctx->replace_state ==
IEEE80211_CHANCTX_WILL_BE_REPLACED)
@@ -1658,7 +1763,7 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
n_vifs_ctxless++;
}
- if (link->reserved_radar_required)
+ if (iter.radar_required)
ctx->conf.radar_enabled = true;
}
}
@@ -1673,7 +1778,7 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
/* update station rate control and min width before switch */
list_for_each_entry(ctx, &local->chanctx_list, list) {
- struct ieee80211_link_data *link;
+ struct ieee80211_chanctx_user_iter iter;
if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER)
continue;
@@ -1683,17 +1788,16 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
goto err;
}
- list_for_each_entry(link, &ctx->reserved_links,
- reserved_chanctx_list) {
- if (!ieee80211_link_has_in_place_reservation(link))
+ for_each_chanctx_user_reserved(local, ctx, &iter) {
+ if (!ieee80211_link_has_in_place_reservation(iter.link))
continue;
ieee80211_chan_bw_change(local,
- ieee80211_link_get_chanctx(link),
+ ieee80211_link_get_chanctx(iter.link),
true, true);
}
- ieee80211_recalc_chanctx_min_def(local, ctx, NULL, true);
+ _ieee80211_recalc_chanctx_min_def(local, ctx, NULL, true);
}
/*
@@ -1718,7 +1822,7 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
* context(s).
*/
list_for_each_entry(ctx, &local->chanctx_list, list) {
- struct ieee80211_link_data *link, *link_tmp;
+ struct ieee80211_chanctx_user_iter iter;
if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER)
continue;
@@ -1728,9 +1832,9 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
goto err;
}
- list_for_each_entry(link, &ctx->reserved_links,
- reserved_chanctx_list) {
- struct ieee80211_sub_if_data *sdata = link->sdata;
+ for_each_chanctx_user_reserved(local, ctx, &iter) {
+ struct ieee80211_link_data *link = iter.link;
+ struct ieee80211_sub_if_data *sdata = iter.sdata;
struct ieee80211_bss_conf *link_conf = link->conf;
u64 changed = 0;
@@ -1746,9 +1850,9 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
ieee80211_check_fast_xmit_iface(sdata);
- link->radar_required = link->reserved_radar_required;
+ link->radar_required = iter.radar_required;
- if (link_conf->chanreq.oper.width != link->reserved.oper.width)
+ if (link_conf->chanreq.oper.width != iter.chanreq->oper.width)
changed = BSS_CHANGED_BANDWIDTH;
ieee80211_link_update_chanreq(link, &link->reserved);
@@ -1763,19 +1867,15 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
ieee80211_recalc_chanctx_chantype(local, ctx);
ieee80211_recalc_smps_chanctx(local, ctx);
ieee80211_recalc_radar_chanctx(local, ctx);
- ieee80211_recalc_chanctx_min_def(local, ctx, NULL, false);
+ ieee80211_recalc_chanctx_min_def(local, ctx);
- list_for_each_entry_safe(link, link_tmp, &ctx->reserved_links,
- reserved_chanctx_list) {
- if (ieee80211_link_get_chanctx(link) != ctx)
+ for_each_chanctx_user_reserved(local, ctx, &iter) {
+ if (ieee80211_link_get_chanctx(iter.link) != ctx)
continue;
- list_del(&link->reserved_chanctx_list);
- list_move(&link->assigned_chanctx_list,
- &ctx->assigned_links);
- link->reserved_chanctx = NULL;
+ iter.link->reserved_chanctx = NULL;
- ieee80211_link_chanctx_reservation_complete(link);
+ ieee80211_link_chanctx_reservation_complete(iter.link);
ieee80211_chan_bw_change(local, ctx, false, false);
}
@@ -1786,12 +1886,10 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
* reservation for originally requested interface has already
* succeeded at this point.
*/
- list_for_each_entry_safe(link, link_tmp, &ctx->reserved_links,
- reserved_chanctx_list) {
- if (WARN_ON(ieee80211_link_has_in_place_reservation(link)))
- continue;
+ for_each_chanctx_user_reserved(local, ctx, &iter) {
+ struct ieee80211_link_data *link = iter.link;
- if (WARN_ON(link->reserved_chanctx != ctx))
+ if (WARN_ON(ieee80211_link_has_in_place_reservation(link)))
continue;
if (!link->reserved_ready)
@@ -1834,15 +1932,14 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
err:
list_for_each_entry(ctx, &local->chanctx_list, list) {
- struct ieee80211_link_data *link, *link_tmp;
+ struct ieee80211_chanctx_user_iter iter;
if (ctx->replace_state != IEEE80211_CHANCTX_REPLACES_OTHER)
continue;
- list_for_each_entry_safe(link, link_tmp, &ctx->reserved_links,
- reserved_chanctx_list) {
- ieee80211_link_unreserve_chanctx(link);
- ieee80211_link_chanctx_reservation_complete(link);
+ for_each_chanctx_user_reserved(local, ctx, &iter) {
+ ieee80211_link_unreserve_chanctx(iter.link);
+ ieee80211_link_chanctx_reservation_complete(iter.link);
}
}
@@ -1949,7 +2046,6 @@ int _ieee80211_link_use_channel(struct ieee80211_link_data *link,
/* remove reservation */
WARN_ON(link->reserved_chanctx != ctx);
link->reserved_chanctx = NULL;
- list_del(&link->reserved_chanctx_list);
}
if (ret) {
@@ -2046,29 +2142,17 @@ ieee80211_chanctx_recheck(struct ieee80211_local *local,
struct ieee80211_chan_req *tmp)
{
const struct ieee80211_chan_req *ret = req;
- struct ieee80211_link_data *link;
+ struct ieee80211_chanctx_user_iter iter;
lockdep_assert_wiphy(local->hw.wiphy);
- for_each_sdata_link(local, link) {
- if (link == skip_link)
+ for_each_chanctx_user_all(local, ctx, &iter) {
+ if (iter.link == skip_link)
continue;
- if (rcu_access_pointer(link->conf->chanctx_conf) == &ctx->conf) {
- ret = ieee80211_chanreq_compatible(ret,
- &link->conf->chanreq,
- tmp);
- if (!ret)
- return NULL;
- }
-
- if (link->reserved_chanctx == ctx) {
- ret = ieee80211_chanreq_compatible(ret,
- &link->reserved,
- tmp);
- if (!ret)
- return NULL;
- }
+ ret = ieee80211_chanreq_compatible(ret, iter.chanreq, tmp);
+ if (!ret)
+ return NULL;
}
*tmp = *ret;
generated by cgit v1.2.3 (git 2.46.0) at 2025-12-04 08:52:58 +0000