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-rw-r--r--net/mac80211/chan.c128
1 files changed, 38 insertions, 90 deletions
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index a2b06d40aebf..53f03120db55 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -8,93 +8,47 @@
#include "ieee80211_i.h"
#include "driver-ops.h"
-static bool
-ieee80211_channel_types_are_compatible(enum nl80211_channel_type chantype1,
- enum nl80211_channel_type chantype2,
- enum nl80211_channel_type *compat)
+static void ieee80211_change_chandef(struct ieee80211_local *local,
+ struct ieee80211_chanctx *ctx,
+ const struct cfg80211_chan_def *chandef)
{
- /*
- * start out with chantype1 being the result,
- * overwriting later if needed
- */
- if (compat)
- *compat = chantype1;
-
- switch (chantype1) {
- case NL80211_CHAN_NO_HT:
- if (compat)
- *compat = chantype2;
- break;
- case NL80211_CHAN_HT20:
- /*
- * allow any change that doesn't go to no-HT
- * (if it already is no-HT no change is needed)
- */
- if (chantype2 == NL80211_CHAN_NO_HT)
- break;
- if (compat)
- *compat = chantype2;
- break;
- case NL80211_CHAN_HT40PLUS:
- case NL80211_CHAN_HT40MINUS:
- /* allow smaller bandwidth and same */
- if (chantype2 == NL80211_CHAN_NO_HT)
- break;
- if (chantype2 == NL80211_CHAN_HT20)
- break;
- if (chantype2 == chantype1)
- break;
- return false;
- }
-
- return true;
-}
-
-static void ieee80211_change_chantype(struct ieee80211_local *local,
- struct ieee80211_chanctx *ctx,
- enum nl80211_channel_type chantype)
-{
- if (chantype == ctx->conf.channel_type)
+ if (cfg80211_chandef_identical(&ctx->conf.def, chandef))
return;
- ctx->conf.channel_type = chantype;
- drv_change_chanctx(local, ctx, IEEE80211_CHANCTX_CHANGE_CHANNEL_TYPE);
+ WARN_ON(!cfg80211_chandef_compatible(&ctx->conf.def, chandef));
+
+ ctx->conf.def = *chandef;
+ drv_change_chanctx(local, ctx, IEEE80211_CHANCTX_CHANGE_WIDTH);
if (!local->use_chanctx) {
- local->_oper_channel_type = chantype;
+ local->_oper_channel_type = cfg80211_get_chandef_type(chandef);
ieee80211_hw_config(local, 0);
}
}
static struct ieee80211_chanctx *
ieee80211_find_chanctx(struct ieee80211_local *local,
- struct ieee80211_channel *channel,
- enum nl80211_channel_type channel_type,
+ const struct cfg80211_chan_def *chandef,
enum ieee80211_chanctx_mode mode)
{
struct ieee80211_chanctx *ctx;
- enum nl80211_channel_type compat_type;
lockdep_assert_held(&local->chanctx_mtx);
if (mode == IEEE80211_CHANCTX_EXCLUSIVE)
return NULL;
- if (WARN_ON(!channel))
- return NULL;
list_for_each_entry(ctx, &local->chanctx_list, list) {
- compat_type = ctx->conf.channel_type;
+ const struct cfg80211_chan_def *compat;
if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE)
continue;
- if (ctx->conf.channel != channel)
- continue;
- if (!ieee80211_channel_types_are_compatible(ctx->conf.channel_type,
- channel_type,
- &compat_type))
+
+ compat = cfg80211_chandef_compatible(&ctx->conf.def, chandef);
+ if (!compat)
continue;
- ieee80211_change_chantype(local, ctx, compat_type);
+ ieee80211_change_chandef(local, ctx, compat);
return ctx;
}
@@ -104,8 +58,7 @@ ieee80211_find_chanctx(struct ieee80211_local *local,
static struct ieee80211_chanctx *
ieee80211_new_chanctx(struct ieee80211_local *local,
- struct ieee80211_channel *channel,
- enum nl80211_channel_type channel_type,
+ const struct cfg80211_chan_def *chandef,
enum ieee80211_chanctx_mode mode)
{
struct ieee80211_chanctx *ctx;
@@ -117,15 +70,15 @@ ieee80211_new_chanctx(struct ieee80211_local *local,
if (!ctx)
return ERR_PTR(-ENOMEM);
- ctx->conf.channel = channel;
- ctx->conf.channel_type = channel_type;
+ ctx->conf.def = *chandef;
ctx->conf.rx_chains_static = 1;
ctx->conf.rx_chains_dynamic = 1;
ctx->mode = mode;
if (!local->use_chanctx) {
- local->_oper_channel_type = channel_type;
- local->_oper_channel = channel;
+ local->_oper_channel_type =
+ cfg80211_get_chandef_type(chandef);
+ local->_oper_channel = chandef->chan;
ieee80211_hw_config(local, 0);
} else {
err = drv_add_chanctx(local, ctx);
@@ -178,41 +131,37 @@ static int ieee80211_assign_vif_chanctx(struct ieee80211_sub_if_data *sdata,
return 0;
}
-static enum nl80211_channel_type
-ieee80211_calc_chantype(struct ieee80211_local *local,
- struct ieee80211_chanctx *ctx)
+static void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
+ struct ieee80211_chanctx *ctx)
{
struct ieee80211_chanctx_conf *conf = &ctx->conf;
struct ieee80211_sub_if_data *sdata;
- enum nl80211_channel_type result = NL80211_CHAN_NO_HT;
+ const struct cfg80211_chan_def *compat = NULL;
lockdep_assert_held(&local->chanctx_mtx);
rcu_read_lock();
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+
if (!ieee80211_sdata_running(sdata))
continue;
if (rcu_access_pointer(sdata->vif.chanctx_conf) != conf)
continue;
- WARN_ON_ONCE(!ieee80211_channel_types_are_compatible(
- sdata->vif.bss_conf.channel_type,
- result, &result));
+ if (!compat)
+ compat = &sdata->vif.bss_conf.chandef;
+
+ compat = cfg80211_chandef_compatible(
+ &sdata->vif.bss_conf.chandef, compat);
+ if (!compat)
+ break;
}
rcu_read_unlock();
- return result;
-}
-
-static void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
- struct ieee80211_chanctx *ctx)
-{
- enum nl80211_channel_type chantype;
-
- lockdep_assert_held(&local->chanctx_mtx);
+ if (WARN_ON_ONCE(!compat))
+ return;
- chantype = ieee80211_calc_chantype(local, ctx);
- ieee80211_change_chantype(local, ctx, chantype);
+ ieee80211_change_chandef(local, ctx, compat);
}
static void ieee80211_unassign_vif_chanctx(struct ieee80211_sub_if_data *sdata,
@@ -337,8 +286,7 @@ void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
}
int ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_channel *channel,
- enum nl80211_channel_type channel_type,
+ const struct cfg80211_chan_def *chandef,
enum ieee80211_chanctx_mode mode)
{
struct ieee80211_local *local = sdata->local;
@@ -350,15 +298,15 @@ int ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
mutex_lock(&local->chanctx_mtx);
__ieee80211_vif_release_channel(sdata);
- ctx = ieee80211_find_chanctx(local, channel, channel_type, mode);
+ ctx = ieee80211_find_chanctx(local, chandef, mode);
if (!ctx)
- ctx = ieee80211_new_chanctx(local, channel, channel_type, mode);
+ ctx = ieee80211_new_chanctx(local, chandef, mode);
if (IS_ERR(ctx)) {
ret = PTR_ERR(ctx);
goto out;
}
- sdata->vif.bss_conf.channel_type = channel_type;
+ sdata->vif.bss_conf.chandef = *chandef;
ret = ieee80211_assign_vif_chanctx(sdata, ctx);
if (ret) {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.