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Diffstat (limited to 'net/mac80211/chan.c')
-rw-r--r--net/mac80211/chan.c233
1 files changed, 126 insertions, 107 deletions
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index 6b82c79cf7a6..f1cef332e4db 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -81,87 +81,97 @@ ieee80211_link_get_chanctx(struct ieee80211_link_data *link)
return container_of(conf, struct ieee80211_chanctx, conf);
}
-static const struct cfg80211_chan_def *
-ieee80211_chanctx_reserved_chandef(struct ieee80211_local *local,
+static const struct ieee80211_chan_req *
+ieee80211_chanreq_compatible(const struct ieee80211_chan_req *a,
+ const struct ieee80211_chan_req *b)
+{
+ const struct cfg80211_chan_def *compat;
+
+ compat = cfg80211_chandef_compatible(&a->oper, &b->oper);
+
+ if (compat == &a->oper)
+ return a;
+
+ if (compat == &b->oper)
+ return b;
+
+ WARN_ON(compat);
+ return NULL;
+}
+
+static const struct ieee80211_chan_req *
+ieee80211_chanctx_compatible(struct ieee80211_chanctx *ctx,
+ const struct ieee80211_chan_req *req,
+ struct ieee80211_chan_req *tmp)
+{
+ *tmp = (struct ieee80211_chan_req){
+ .oper = ctx->conf.def,
+ };
+
+ return ieee80211_chanreq_compatible(tmp, req);
+}
+
+static const struct ieee80211_chan_req *
+ieee80211_chanctx_reserved_chanreq(struct ieee80211_local *local,
struct ieee80211_chanctx *ctx,
- const struct cfg80211_chan_def *compat)
+ const struct ieee80211_chan_req *req)
{
struct ieee80211_link_data *link;
lockdep_assert_wiphy(local->hw.wiphy);
- if (WARN_ON(!compat))
+ if (WARN_ON(!req))
return NULL;
- list_for_each_entry(link, &ctx->reserved_links,
- reserved_chanctx_list) {
- compat = cfg80211_chandef_compatible(&link->reserved_chandef,
- compat);
- if (!compat)
+ list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list) {
+ req = ieee80211_chanreq_compatible(&link->reserved, req);
+ if (!req)
break;
}
- return compat;
+ return req;
}
-static const struct cfg80211_chan_def *
+static const struct ieee80211_chan_req *
ieee80211_chanctx_non_reserved_chandef(struct ieee80211_local *local,
struct ieee80211_chanctx *ctx,
- const struct cfg80211_chan_def *compat)
+ const struct ieee80211_chan_req *compat)
{
struct ieee80211_link_data *link;
+ const struct ieee80211_chan_req *comp_def = compat;
lockdep_assert_wiphy(local->hw.wiphy);
- list_for_each_entry(link, &ctx->assigned_links,
- assigned_chanctx_list) {
+ list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) {
struct ieee80211_bss_conf *link_conf = link->conf;
if (link->reserved_chanctx)
continue;
- if (!compat)
- compat = &link_conf->chandef;
-
- compat = cfg80211_chandef_compatible(
- &link_conf->chandef, compat);
- if (!compat)
+ comp_def = ieee80211_chanreq_compatible(&link_conf->chanreq,
+ comp_def);
+ if (!comp_def)
break;
}
- return compat;
-}
-
-static const struct cfg80211_chan_def *
-ieee80211_chanctx_combined_chandef(struct ieee80211_local *local,
- struct ieee80211_chanctx *ctx,
- const struct cfg80211_chan_def *compat)
-{
- lockdep_assert_wiphy(local->hw.wiphy);
-
- compat = ieee80211_chanctx_reserved_chandef(local, ctx, compat);
- if (!compat)
- return NULL;
-
- compat = ieee80211_chanctx_non_reserved_chandef(local, ctx, compat);
- if (!compat)
- return NULL;
-
- return compat;
+ return comp_def;
}
static bool
-ieee80211_chanctx_can_reserve_chandef(struct ieee80211_local *local,
- struct ieee80211_chanctx *ctx,
- const struct cfg80211_chan_def *def)
+ieee80211_chanctx_can_reserve(struct ieee80211_local *local,
+ struct ieee80211_chanctx *ctx,
+ const struct ieee80211_chan_req *req)
{
lockdep_assert_wiphy(local->hw.wiphy);
- if (ieee80211_chanctx_combined_chandef(local, ctx, def))
- return true;
+ if (!ieee80211_chanctx_reserved_chanreq(local, ctx, req))
+ return false;
+
+ if (!ieee80211_chanctx_non_reserved_chandef(local, ctx, req))
+ return false;
if (!list_empty(&ctx->reserved_links) &&
- ieee80211_chanctx_reserved_chandef(local, ctx, def))
+ ieee80211_chanctx_reserved_chanreq(local, ctx, req))
return true;
return false;
@@ -169,7 +179,7 @@ ieee80211_chanctx_can_reserve_chandef(struct ieee80211_local *local,
static struct ieee80211_chanctx *
ieee80211_find_reservation_chanctx(struct ieee80211_local *local,
- const struct cfg80211_chan_def *chandef,
+ const struct ieee80211_chan_req *chanreq,
enum ieee80211_chanctx_mode mode)
{
struct ieee80211_chanctx *ctx;
@@ -186,8 +196,7 @@ ieee80211_find_reservation_chanctx(struct ieee80211_local *local,
if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE)
continue;
- if (!ieee80211_chanctx_can_reserve_chandef(local, ctx,
- chandef))
+ if (!ieee80211_chanctx_can_reserve(local, ctx, chanreq))
continue;
return ctx;
@@ -290,7 +299,7 @@ ieee80211_get_chanctx_vif_max_required_bw(struct ieee80211_sub_if_data *sdata,
* point, so take the width from the chandef, but
* account also for TDLS peers
*/
- width = max(link->conf->chandef.width,
+ width = max(link->conf->chanreq.oper.width,
ieee80211_get_max_required_bw(sdata, link_id));
break;
case NL80211_IFTYPE_P2P_DEVICE:
@@ -299,7 +308,7 @@ ieee80211_get_chanctx_vif_max_required_bw(struct ieee80211_sub_if_data *sdata,
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_MESH_POINT:
case NL80211_IFTYPE_OCB:
- width = link->conf->chandef.width;
+ width = link->conf->chanreq.oper.width;
break;
case NL80211_IFTYPE_WDS:
case NL80211_IFTYPE_UNSPECIFIED:
@@ -395,7 +404,7 @@ _ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
}
/* calling this function is assuming that station vif is updated to
- * lates changes by calling ieee80211_link_update_chandef
+ * lates changes by calling ieee80211_link_update_chanreq
*/
static void ieee80211_chan_bw_change(struct ieee80211_local *local,
struct ieee80211_chanctx *ctx,
@@ -475,9 +484,10 @@ void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
static void _ieee80211_change_chanctx(struct ieee80211_local *local,
struct ieee80211_chanctx *ctx,
struct ieee80211_chanctx *old_ctx,
- const struct cfg80211_chan_def *chandef,
+ const struct ieee80211_chan_req *chanreq,
struct ieee80211_link_data *rsvd_for)
{
+ const struct cfg80211_chan_def *chandef = &chanreq->oper;
u32 changed;
/* expected to handle only 20/40/80/160/320 channel widths */
@@ -526,16 +536,17 @@ static void _ieee80211_change_chanctx(struct ieee80211_local *local,
static void ieee80211_change_chanctx(struct ieee80211_local *local,
struct ieee80211_chanctx *ctx,
struct ieee80211_chanctx *old_ctx,
- const struct cfg80211_chan_def *chandef)
+ const struct ieee80211_chan_req *chanreq)
{
- _ieee80211_change_chanctx(local, ctx, old_ctx, chandef, NULL);
+ _ieee80211_change_chanctx(local, ctx, old_ctx, chanreq, NULL);
}
static struct ieee80211_chanctx *
ieee80211_find_chanctx(struct ieee80211_local *local,
- const struct cfg80211_chan_def *chandef,
+ const struct ieee80211_chan_req *chanreq,
enum ieee80211_chanctx_mode mode)
{
+ struct ieee80211_chan_req tmp;
struct ieee80211_chanctx *ctx;
lockdep_assert_wiphy(local->hw.wiphy);
@@ -544,7 +555,7 @@ ieee80211_find_chanctx(struct ieee80211_local *local,
return NULL;
list_for_each_entry(ctx, &local->chanctx_list, list) {
- const struct cfg80211_chan_def *compat;
+ const struct ieee80211_chan_req *compat;
if (ctx->replace_state != IEEE80211_CHANCTX_REPLACE_NONE)
continue;
@@ -552,11 +563,11 @@ ieee80211_find_chanctx(struct ieee80211_local *local,
if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE)
continue;
- compat = cfg80211_chandef_compatible(&ctx->conf.def, chandef);
+ compat = ieee80211_chanctx_compatible(ctx, chanreq, &tmp);
if (!compat)
continue;
- compat = ieee80211_chanctx_reserved_chandef(local, ctx,
+ compat = ieee80211_chanctx_reserved_chanreq(local, ctx,
compat);
if (!compat)
continue;
@@ -636,7 +647,7 @@ ieee80211_chanctx_radar_required(struct ieee80211_local *local,
static struct ieee80211_chanctx *
ieee80211_alloc_chanctx(struct ieee80211_local *local,
- const struct cfg80211_chan_def *chandef,
+ const struct ieee80211_chan_req *chanreq,
enum ieee80211_chanctx_mode mode)
{
struct ieee80211_chanctx *ctx;
@@ -649,7 +660,7 @@ ieee80211_alloc_chanctx(struct ieee80211_local *local,
INIT_LIST_HEAD(&ctx->assigned_links);
INIT_LIST_HEAD(&ctx->reserved_links);
- ctx->conf.def = *chandef;
+ ctx->conf.def = chanreq->oper;
ctx->conf.rx_chains_static = 1;
ctx->conf.rx_chains_dynamic = 1;
ctx->mode = mode;
@@ -685,7 +696,7 @@ static int ieee80211_add_chanctx(struct ieee80211_local *local,
static struct ieee80211_chanctx *
ieee80211_new_chanctx(struct ieee80211_local *local,
- const struct cfg80211_chan_def *chandef,
+ const struct ieee80211_chan_req *chanreq,
enum ieee80211_chanctx_mode mode)
{
struct ieee80211_chanctx *ctx;
@@ -693,7 +704,7 @@ ieee80211_new_chanctx(struct ieee80211_local *local,
lockdep_assert_wiphy(local->hw.wiphy);
- ctx = ieee80211_alloc_chanctx(local, chandef, mode);
+ ctx = ieee80211_alloc_chanctx(local, chanreq, mode);
if (!ctx)
return ERR_PTR(-ENOMEM);
@@ -737,6 +748,7 @@ void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
struct ieee80211_chanctx_conf *conf = &ctx->conf;
struct ieee80211_sub_if_data *sdata;
const struct cfg80211_chan_def *compat = NULL;
+ struct ieee80211_chan_req chanreq = {};
struct sta_info *sta;
lockdep_assert_wiphy(local->hw.wiphy);
@@ -762,9 +774,9 @@ void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
continue;
if (!compat)
- compat = &link_conf->chandef;
+ compat = &link_conf->chanreq.oper;
- compat = cfg80211_chandef_compatible(&link_conf->chandef,
+ compat = cfg80211_chandef_compatible(&link_conf->chanreq.oper,
compat);
if (WARN_ON_ONCE(!compat))
break;
@@ -794,7 +806,9 @@ void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
if (!compat)
return;
- ieee80211_change_chanctx(local, ctx, ctx, compat);
+ chanreq.oper = *compat;
+
+ ieee80211_change_chanctx(local, ctx, ctx, &chanreq);
}
static void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
@@ -1050,7 +1064,7 @@ int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link)
}
int ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
- const struct cfg80211_chan_def *chandef,
+ const struct ieee80211_chan_req *chanreq,
enum ieee80211_chanctx_mode mode,
bool radar_required)
{
@@ -1064,10 +1078,10 @@ int ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
if (curr_ctx && !local->ops->switch_vif_chanctx)
return -EOPNOTSUPP;
- new_ctx = ieee80211_find_reservation_chanctx(local, chandef, mode);
+ new_ctx = ieee80211_find_reservation_chanctx(local, chanreq, mode);
if (!new_ctx) {
if (ieee80211_can_create_new_chanctx(local)) {
- new_ctx = ieee80211_new_chanctx(local, chandef, mode);
+ new_ctx = ieee80211_new_chanctx(local, chanreq, mode);
if (IS_ERR(new_ctx))
return PTR_ERR(new_ctx);
} else {
@@ -1121,7 +1135,7 @@ int ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
!list_empty(&curr_ctx->reserved_links))
return -EBUSY;
- new_ctx = ieee80211_alloc_chanctx(local, chandef, mode);
+ new_ctx = ieee80211_alloc_chanctx(local, chanreq, mode);
if (!new_ctx)
return -ENOMEM;
@@ -1139,7 +1153,7 @@ int ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
list_add(&link->reserved_chanctx_list, &new_ctx->reserved_links);
link->reserved_chanctx = new_ctx;
- link->reserved_chandef = *chandef;
+ link->reserved = *chanreq;
link->reserved_radar_required = radar_required;
link->reserved_ready = false;
@@ -1178,14 +1192,14 @@ ieee80211_link_chanctx_reservation_complete(struct ieee80211_link_data *link)
}
static void
-ieee80211_link_update_chandef(struct ieee80211_link_data *link,
- const struct cfg80211_chan_def *chandef)
+ieee80211_link_update_chanreq(struct ieee80211_link_data *link,
+ const struct ieee80211_chan_req *chanreq)
{
struct ieee80211_sub_if_data *sdata = link->sdata;
unsigned int link_id = link->link_id;
struct ieee80211_sub_if_data *vlan;
- link->conf->chandef = *chandef;
+ link->conf->chanreq = *chanreq;
if (sdata->vif.type != NL80211_IFTYPE_AP)
return;
@@ -1198,7 +1212,7 @@ ieee80211_link_update_chandef(struct ieee80211_link_data *link,
if (WARN_ON(!vlan_conf))
continue;
- vlan_conf->chandef = *chandef;
+ vlan_conf->chanreq = *chanreq;
}
rcu_read_unlock();
}
@@ -1211,7 +1225,7 @@ ieee80211_link_use_reserved_reassign(struct ieee80211_link_data *link)
struct ieee80211_local *local = sdata->local;
struct ieee80211_vif_chanctx_switch vif_chsw[1] = {};
struct ieee80211_chanctx *old_ctx, *new_ctx;
- const struct cfg80211_chan_def *chandef;
+ const struct ieee80211_chan_req *chanreq;
u64 changed = 0;
int err;
@@ -1233,17 +1247,17 @@ ieee80211_link_use_reserved_reassign(struct ieee80211_link_data *link)
IEEE80211_CHANCTX_REPLACES_OTHER))
return -EINVAL;
- chandef = ieee80211_chanctx_non_reserved_chandef(local, new_ctx,
- &link->reserved_chandef);
- if (WARN_ON(!chandef))
+ chanreq = ieee80211_chanctx_non_reserved_chandef(local, new_ctx,
+ &link->reserved);
+ if (WARN_ON(!chanreq))
return -EINVAL;
- if (link_conf->chandef.width != link->reserved_chandef.width)
+ if (link_conf->chanreq.oper.width != link->reserved.oper.width)
changed = BSS_CHANGED_BANDWIDTH;
- ieee80211_link_update_chandef(link, &link->reserved_chandef);
+ ieee80211_link_update_chanreq(link, &link->reserved);
- _ieee80211_change_chanctx(local, new_ctx, old_ctx, chandef, link);
+ _ieee80211_change_chanctx(local, new_ctx, old_ctx, chanreq, link);
vif_chsw[0].vif = &sdata->vif;
vif_chsw[0].old_ctx = &old_ctx->conf;
@@ -1291,7 +1305,7 @@ ieee80211_link_use_reserved_assign(struct ieee80211_link_data *link)
struct ieee80211_sub_if_data *sdata = link->sdata;
struct ieee80211_local *local = sdata->local;
struct ieee80211_chanctx *old_ctx, *new_ctx;
- const struct cfg80211_chan_def *chandef;
+ const struct ieee80211_chan_req *chanreq;
int err;
old_ctx = ieee80211_link_get_chanctx(link);
@@ -1310,12 +1324,12 @@ ieee80211_link_use_reserved_assign(struct ieee80211_link_data *link)
IEEE80211_CHANCTX_REPLACES_OTHER))
return -EINVAL;
- chandef = ieee80211_chanctx_non_reserved_chandef(local, new_ctx,
- &link->reserved_chandef);
- if (WARN_ON(!chandef))
+ chanreq = ieee80211_chanctx_non_reserved_chandef(local, new_ctx,
+ &link->reserved);
+ if (WARN_ON(!chanreq))
return -EINVAL;
- ieee80211_change_chanctx(local, new_ctx, new_ctx, chandef);
+ ieee80211_change_chanctx(local, new_ctx, new_ctx, chanreq);
list_del(&link->reserved_chanctx_list);
link->reserved_chanctx = NULL;
@@ -1589,10 +1603,10 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
link->radar_required = link->reserved_radar_required;
- if (link_conf->chandef.width != link->reserved_chandef.width)
+ if (link_conf->chanreq.oper.width != link->reserved.oper.width)
changed = BSS_CHANGED_BANDWIDTH;
- ieee80211_link_update_chandef(link, &link->reserved_chandef);
+ ieee80211_link_update_chanreq(link, &link->reserved);
if (changed)
ieee80211_link_info_change_notify(sdata,
link,
@@ -1727,7 +1741,7 @@ static void __ieee80211_link_release_channel(struct ieee80211_link_data *link)
}
int ieee80211_link_use_channel(struct ieee80211_link_data *link,
- const struct cfg80211_chan_def *chandef,
+ const struct ieee80211_chan_req *chanreq,
enum ieee80211_chanctx_mode mode)
{
struct ieee80211_sub_if_data *sdata = link->sdata;
@@ -1740,36 +1754,36 @@ int ieee80211_link_use_channel(struct ieee80211_link_data *link,
if (sdata->vif.active_links &&
!(sdata->vif.active_links & BIT(link->link_id))) {
- ieee80211_link_update_chandef(link, chandef);
+ ieee80211_link_update_chanreq(link, chanreq);
return 0;
}
ret = cfg80211_chandef_dfs_required(local->hw.wiphy,
- chandef,
+ &chanreq->oper,
sdata->wdev.iftype);
if (ret < 0)
goto out;
if (ret > 0)
- radar_detect_width = BIT(chandef->width);
+ radar_detect_width = BIT(chanreq->oper.width);
link->radar_required = ret;
- ret = ieee80211_check_combinations(sdata, chandef, mode,
+ ret = ieee80211_check_combinations(sdata, &chanreq->oper, mode,
radar_detect_width);
if (ret < 0)
goto out;
__ieee80211_link_release_channel(link);
- ctx = ieee80211_find_chanctx(local, chandef, mode);
+ ctx = ieee80211_find_chanctx(local, chanreq, mode);
if (!ctx)
- ctx = ieee80211_new_chanctx(local, chandef, mode);
+ ctx = ieee80211_new_chanctx(local, chanreq, mode);
if (IS_ERR(ctx)) {
ret = PTR_ERR(ctx);
goto out;
}
- ieee80211_link_update_chandef(link, chandef);
+ ieee80211_link_update_chanreq(link, chanreq);
ret = ieee80211_assign_link_chanctx(link, ctx);
if (ret) {
@@ -1849,28 +1863,33 @@ int ieee80211_link_use_reserved_context(struct ieee80211_link_data *link)
return 0;
}
-int ieee80211_link_change_bandwidth(struct ieee80211_link_data *link,
- const struct cfg80211_chan_def *chandef,
- u64 *changed)
+int ieee80211_link_change_chanreq(struct ieee80211_link_data *link,
+ const struct ieee80211_chan_req *chanreq,
+ u64 *changed)
{
struct ieee80211_sub_if_data *sdata = link->sdata;
struct ieee80211_bss_conf *link_conf = link->conf;
struct ieee80211_local *local = sdata->local;
struct ieee80211_chanctx_conf *conf;
struct ieee80211_chanctx *ctx;
- const struct cfg80211_chan_def *compat;
+ const struct ieee80211_chan_req *compat;
+ struct ieee80211_chan_req tmp;
lockdep_assert_wiphy(local->hw.wiphy);
- if (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
+ if (!cfg80211_chandef_usable(sdata->local->hw.wiphy,
+ &chanreq->oper,
IEEE80211_CHAN_DISABLED))
return -EINVAL;
- if (cfg80211_chandef_identical(chandef, &link_conf->chandef))
+ /* for non-HT 20 MHz the rest doesn't matter */
+ if (chanreq->oper.width == NL80211_CHAN_WIDTH_20_NOHT &&
+ cfg80211_chandef_identical(&chanreq->oper, &link_conf->chanreq.oper))
return 0;
- if (chandef->width == NL80211_CHAN_WIDTH_20_NOHT ||
- link_conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
+ /* but you cannot switch to/from it */
+ if (chanreq->oper.width == NL80211_CHAN_WIDTH_20_NOHT ||
+ link_conf->chanreq.oper.width == NL80211_CHAN_WIDTH_20_NOHT)
return -EINVAL;
conf = rcu_dereference_protected(link_conf->chanctx_conf,
@@ -1880,13 +1899,13 @@ int ieee80211_link_change_bandwidth(struct ieee80211_link_data *link,
ctx = container_of(conf, struct ieee80211_chanctx, conf);
- compat = cfg80211_chandef_compatible(&conf->def, chandef);
+ compat = ieee80211_chanctx_compatible(ctx, chanreq, &tmp);
if (!compat)
return -EINVAL;
switch (ctx->replace_state) {
case IEEE80211_CHANCTX_REPLACE_NONE:
- if (!ieee80211_chanctx_reserved_chandef(local, ctx, compat))
+ if (!ieee80211_chanctx_reserved_chanreq(local, ctx, compat))
return -EBUSY;
break;
case IEEE80211_CHANCTX_WILL_BE_REPLACED:
@@ -1901,7 +1920,7 @@ int ieee80211_link_change_bandwidth(struct ieee80211_link_data *link,
break;
}
- ieee80211_link_update_chandef(link, chandef);
+ ieee80211_link_update_chanreq(link, chanreq);
ieee80211_recalc_chanctx_chantype(local, ctx);
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-23 07:36:48 +0300