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mac80211: backport EMA beacon support
Backport EMA beacon support from kernel 6.4.
It is required for MBSSID/EMA suport in ath11k that will follow.
Tested-by: Francisco G Luna <frangonlun@gmail.com>
Signed-off-by: Robert Marko <robimarko@gmail.com>
(cherry picked from commit 84b5735b4c)
This commit is contained in:
Robert Marko
Petr Štetiar
parent
e7aae81d03
commit
802e99a7fe
@ -0,0 +1,372 @@
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From bd54f3c29077f23dad92ef82a78061b40be30c65 Mon Sep 17 00:00:00 2001
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From: Aloka Dixit <quic_alokad@quicinc.com>
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Date: Mon, 5 Dec 2022 16:50:37 -0800
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Subject: [PATCH] wifi: mac80211: generate EMA beacons in AP mode
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Add APIs to generate an array of beacons for an EMA AP (enhanced
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multiple BSSID advertisements), each including a single MBSSID element.
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EMA profile periodicity equals the count of elements.
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- ieee80211_beacon_get_template_ema_list() - Generate and return all
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EMA beacon templates. Drivers must call ieee80211_beacon_free_ema_list()
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to free the memory. No change in the prototype for the existing API,
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ieee80211_beacon_get_template(), which should be used for non-EMA AP.
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- ieee80211_beacon_get_template_ema_index() - Generate a beacon which
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includes the multiple BSSID element at the given index. Drivers can use
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this function in a loop until NULL is returned which indicates end of
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available MBSSID elements.
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- ieee80211_beacon_free_ema_list() - free the memory allocated for the
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list of EMA beacon templates.
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Modify existing functions ieee80211_beacon_get_ap(),
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ieee80211_get_mbssid_beacon_len() and ieee80211_beacon_add_mbssid()
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to accept a new parameter for EMA index.
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Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
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Co-developed-by: John Crispin <john@phrozen.org>
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Signed-off-by: John Crispin <john@phrozen.org>
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Link: https://lore.kernel.org/r/20221206005040.3177-2-quic_alokad@quicinc.com
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Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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---
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include/net/mac80211.h | 68 +++++++++++++++++++
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net/mac80211/cfg.c | 11 +--
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net/mac80211/ieee80211_i.h | 10 ++-
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net/mac80211/tx.c | 134 ++++++++++++++++++++++++++++++++++---
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4 files changed, 205 insertions(+), 18 deletions(-)
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--- a/include/net/mac80211.h
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+++ b/include/net/mac80211.h
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@@ -5252,6 +5252,74 @@ ieee80211_beacon_get_template(struct iee
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unsigned int link_id);
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/**
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+ * ieee80211_beacon_get_template_ema_index - EMA beacon template generation
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+ * @hw: pointer obtained from ieee80211_alloc_hw().
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+ * @vif: &struct ieee80211_vif pointer from the add_interface callback.
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+ * @offs: &struct ieee80211_mutable_offsets pointer to struct that will
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+ * receive the offsets that may be updated by the driver.
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+ * @link_id: the link id to which the beacon belongs (or 0 for a non-MLD AP).
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+ * @ema_index: index of the beacon in the EMA set.
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+ *
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+ * This function follows the same rules as ieee80211_beacon_get_template()
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+ * but returns a beacon template which includes multiple BSSID element at the
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+ * requested index.
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+ *
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+ * Return: The beacon template. %NULL indicates the end of EMA templates.
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+ */
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+struct sk_buff *
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+ieee80211_beacon_get_template_ema_index(struct ieee80211_hw *hw,
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+ struct ieee80211_vif *vif,
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+ struct ieee80211_mutable_offsets *offs,
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+ unsigned int link_id, u8 ema_index);
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+
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+/**
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+ * struct ieee80211_ema_beacons - List of EMA beacons
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+ * @cnt: count of EMA beacons.
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+ *
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+ * @bcn: array of EMA beacons.
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+ * @bcn.skb: the skb containing this specific beacon
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+ * @bcn.offs: &struct ieee80211_mutable_offsets pointer to struct that will
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+ * receive the offsets that may be updated by the driver.
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+ */
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+struct ieee80211_ema_beacons {
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+ u8 cnt;
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+ struct {
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+ struct sk_buff *skb;
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+ struct ieee80211_mutable_offsets offs;
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+ } bcn[];
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+};
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+
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+/**
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+ * ieee80211_beacon_get_template_ema_list - EMA beacon template generation
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+ * @hw: pointer obtained from ieee80211_alloc_hw().
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+ * @vif: &struct ieee80211_vif pointer from the add_interface callback.
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+ * @link_id: the link id to which the beacon belongs (or 0 for a non-MLD AP)
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+ *
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+ * This function follows the same rules as ieee80211_beacon_get_template()
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+ * but allocates and returns a pointer to list of all beacon templates required
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+ * to cover all profiles in the multiple BSSID set. Each template includes only
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+ * one multiple BSSID element.
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+ *
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+ * Driver must call ieee80211_beacon_free_ema_list() to free the memory.
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+ *
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+ * Return: EMA beacon templates of type struct ieee80211_ema_beacons *.
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+ * %NULL on error.
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+ */
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+struct ieee80211_ema_beacons *
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+ieee80211_beacon_get_template_ema_list(struct ieee80211_hw *hw,
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+ struct ieee80211_vif *vif,
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+ unsigned int link_id);
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+
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+/**
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+ * ieee80211_beacon_free_ema_list - free an EMA beacon template list
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+ * @ema_beacons: list of EMA beacons of type &struct ieee80211_ema_beacons pointers.
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+ *
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+ * This function will free a list previously acquired by calling
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+ * ieee80211_beacon_get_template_ema_list()
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+ */
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+void ieee80211_beacon_free_ema_list(struct ieee80211_ema_beacons *ema_beacons);
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+
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+/**
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* ieee80211_beacon_get_tim - beacon generation function
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* @hw: pointer obtained from ieee80211_alloc_hw().
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* @vif: &struct ieee80211_vif pointer from the add_interface callback.
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--- a/net/mac80211/cfg.c
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+++ b/net/mac80211/cfg.c
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@@ -1122,11 +1122,11 @@ static int ieee80211_assign_beacon(struc
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if (params->mbssid_ies) {
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mbssid = params->mbssid_ies;
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size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
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- size += ieee80211_get_mbssid_beacon_len(mbssid);
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+ size += ieee80211_get_mbssid_beacon_len(mbssid, mbssid->cnt);
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} else if (old && old->mbssid_ies) {
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mbssid = old->mbssid_ies;
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size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
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- size += ieee80211_get_mbssid_beacon_len(mbssid);
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+ size += ieee80211_get_mbssid_beacon_len(mbssid, mbssid->cnt);
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}
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new = kzalloc(size, GFP_KERNEL);
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@@ -3384,8 +3384,11 @@ cfg80211_beacon_dup(struct cfg80211_beac
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len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
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beacon->proberesp_ies_len + beacon->assocresp_ies_len +
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- beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len +
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- ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies);
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+ beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len;
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+
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+ if (beacon->mbssid_ies)
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+ len += ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies,
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+ beacon->mbssid_ies->cnt);
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new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
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if (!new_beacon)
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--- a/net/mac80211/ieee80211_i.h
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+++ b/net/mac80211/ieee80211_i.h
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@@ -1182,13 +1182,17 @@ ieee80211_vif_get_shift(struct ieee80211
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}
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static inline int
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-ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems)
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+ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems, u8 i)
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{
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- int i, len = 0;
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+ int len = 0;
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- if (!elems)
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+ if (!elems || !elems->cnt || i > elems->cnt)
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return 0;
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+ if (i < elems->cnt)
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+ return elems->elem[i].len;
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+
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+ /* i == elems->cnt, calculate total length of all MBSSID elements */
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for (i = 0; i < elems->cnt; i++)
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len += elems->elem[i].len;
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--- a/net/mac80211/tx.c
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+++ b/net/mac80211/tx.c
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@@ -5205,13 +5205,20 @@ ieee80211_beacon_get_finish(struct ieee8
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}
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static void
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-ieee80211_beacon_add_mbssid(struct sk_buff *skb, struct beacon_data *beacon)
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+ieee80211_beacon_add_mbssid(struct sk_buff *skb, struct beacon_data *beacon,
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+ u8 i)
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{
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- int i;
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+ if (!beacon->mbssid_ies || !beacon->mbssid_ies->cnt ||
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+ i > beacon->mbssid_ies->cnt)
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+ return;
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- if (!beacon->mbssid_ies)
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+ if (i < beacon->mbssid_ies->cnt) {
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+ skb_put_data(skb, beacon->mbssid_ies->elem[i].data,
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+ beacon->mbssid_ies->elem[i].len);
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return;
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+ }
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+ /* i == beacon->mbssid_ies->cnt, include all MBSSID elements */
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for (i = 0; i < beacon->mbssid_ies->cnt; i++)
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skb_put_data(skb, beacon->mbssid_ies->elem[i].data,
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beacon->mbssid_ies->elem[i].len);
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@@ -5224,7 +5231,8 @@ ieee80211_beacon_get_ap(struct ieee80211
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struct ieee80211_mutable_offsets *offs,
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bool is_template,
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struct beacon_data *beacon,
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- struct ieee80211_chanctx_conf *chanctx_conf)
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+ struct ieee80211_chanctx_conf *chanctx_conf,
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+ u8 ema_index)
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{
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struct ieee80211_local *local = hw_to_local(hw);
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struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
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@@ -5243,7 +5251,9 @@ ieee80211_beacon_get_ap(struct ieee80211
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/* headroom, head length,
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* tail length, maximum TIM length and multiple BSSID length
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*/
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- mbssid_len = ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies);
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+ mbssid_len = ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies,
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+ ema_index);
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+
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skb = dev_alloc_skb(local->tx_headroom + beacon->head_len +
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beacon->tail_len + 256 +
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local->hw.extra_beacon_tailroom + mbssid_len);
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@@ -5261,7 +5271,7 @@ ieee80211_beacon_get_ap(struct ieee80211
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offs->cntdwn_counter_offs[0] = beacon->cntdwn_counter_offsets[0];
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if (mbssid_len) {
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- ieee80211_beacon_add_mbssid(skb, beacon);
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+ ieee80211_beacon_add_mbssid(skb, beacon, ema_index);
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offs->mbssid_off = skb->len - mbssid_len;
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}
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@@ -5280,12 +5290,51 @@ ieee80211_beacon_get_ap(struct ieee80211
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return skb;
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}
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+static struct ieee80211_ema_beacons *
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+ieee80211_beacon_get_ap_ema_list(struct ieee80211_hw *hw,
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+ struct ieee80211_vif *vif,
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+ struct ieee80211_link_data *link,
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+ struct ieee80211_mutable_offsets *offs,
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+ bool is_template, struct beacon_data *beacon,
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+ struct ieee80211_chanctx_conf *chanctx_conf)
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+{
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+ struct ieee80211_ema_beacons *ema = NULL;
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+
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+ if (!beacon->mbssid_ies || !beacon->mbssid_ies->cnt)
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+ return NULL;
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+
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+ ema = kzalloc(struct_size(ema, bcn, beacon->mbssid_ies->cnt),
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+ GFP_ATOMIC);
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+ if (!ema)
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+ return NULL;
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+
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+ for (ema->cnt = 0; ema->cnt < beacon->mbssid_ies->cnt; ema->cnt++) {
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+ ema->bcn[ema->cnt].skb =
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+ ieee80211_beacon_get_ap(hw, vif, link,
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+ &ema->bcn[ema->cnt].offs,
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+ is_template, beacon,
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+ chanctx_conf, ema->cnt);
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+ if (!ema->bcn[ema->cnt].skb)
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+ break;
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+ }
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+
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+ if (ema->cnt == beacon->mbssid_ies->cnt)
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+ return ema;
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+
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+ ieee80211_beacon_free_ema_list(ema);
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+ return NULL;
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+}
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+
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+#define IEEE80211_INCLUDE_ALL_MBSSID_ELEMS -1
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+
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static struct sk_buff *
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__ieee80211_beacon_get(struct ieee80211_hw *hw,
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struct ieee80211_vif *vif,
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struct ieee80211_mutable_offsets *offs,
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bool is_template,
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- unsigned int link_id)
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+ unsigned int link_id,
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+ int ema_index,
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+ struct ieee80211_ema_beacons **ema_beacons)
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{
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struct ieee80211_local *local = hw_to_local(hw);
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struct beacon_data *beacon = NULL;
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@@ -5314,8 +5363,29 @@ __ieee80211_beacon_get(struct ieee80211_
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if (!beacon)
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goto out;
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- skb = ieee80211_beacon_get_ap(hw, vif, link, offs, is_template,
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- beacon, chanctx_conf);
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+ if (ema_beacons) {
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+ *ema_beacons =
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+ ieee80211_beacon_get_ap_ema_list(hw, vif, link,
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+ offs,
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+ is_template,
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+ beacon,
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+ chanctx_conf);
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+ } else {
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+ if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) {
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+ if (ema_index >= beacon->mbssid_ies->cnt)
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+ goto out; /* End of MBSSID elements */
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+
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+ if (ema_index <= IEEE80211_INCLUDE_ALL_MBSSID_ELEMS)
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+ ema_index = beacon->mbssid_ies->cnt;
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+ } else {
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+ ema_index = 0;
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+ }
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+
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+ skb = ieee80211_beacon_get_ap(hw, vif, link, offs,
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+ is_template, beacon,
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+ chanctx_conf,
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+ ema_index);
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+ }
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} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
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struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
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struct ieee80211_hdr *hdr;
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@@ -5403,10 +5473,50 @@ ieee80211_beacon_get_template(struct iee
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struct ieee80211_mutable_offsets *offs,
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unsigned int link_id)
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{
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- return __ieee80211_beacon_get(hw, vif, offs, true, link_id);
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+ return __ieee80211_beacon_get(hw, vif, offs, true, link_id,
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+ IEEE80211_INCLUDE_ALL_MBSSID_ELEMS, NULL);
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}
|
||||||
|
EXPORT_SYMBOL(ieee80211_beacon_get_template);
|
||||||
|
|
||||||
|
+struct sk_buff *
|
||||||
|
+ieee80211_beacon_get_template_ema_index(struct ieee80211_hw *hw,
|
||||||
|
+ struct ieee80211_vif *vif,
|
||||||
|
+ struct ieee80211_mutable_offsets *offs,
|
||||||
|
+ unsigned int link_id, u8 ema_index)
|
||||||
|
+{
|
||||||
|
+ return __ieee80211_beacon_get(hw, vif, offs, true, link_id, ema_index,
|
||||||
|
+ NULL);
|
||||||
|
+}
|
||||||
|
+EXPORT_SYMBOL(ieee80211_beacon_get_template_ema_index);
|
||||||
|
+
|
||||||
|
+void ieee80211_beacon_free_ema_list(struct ieee80211_ema_beacons *ema_beacons)
|
||||||
|
+{
|
||||||
|
+ u8 i;
|
||||||
|
+
|
||||||
|
+ if (!ema_beacons)
|
||||||
|
+ return;
|
||||||
|
+
|
||||||
|
+ for (i = 0; i < ema_beacons->cnt; i++)
|
||||||
|
+ kfree_skb(ema_beacons->bcn[i].skb);
|
||||||
|
+
|
||||||
|
+ kfree(ema_beacons);
|
||||||
|
+}
|
||||||
|
+EXPORT_SYMBOL(ieee80211_beacon_free_ema_list);
|
||||||
|
+
|
||||||
|
+struct ieee80211_ema_beacons *
|
||||||
|
+ieee80211_beacon_get_template_ema_list(struct ieee80211_hw *hw,
|
||||||
|
+ struct ieee80211_vif *vif,
|
||||||
|
+ unsigned int link_id)
|
||||||
|
+{
|
||||||
|
+ struct ieee80211_ema_beacons *ema_beacons = NULL;
|
||||||
|
+
|
||||||
|
+ WARN_ON(__ieee80211_beacon_get(hw, vif, NULL, false, link_id, 0,
|
||||||
|
+ &ema_beacons));
|
||||||
|
+
|
||||||
|
+ return ema_beacons;
|
||||||
|
+}
|
||||||
|
+EXPORT_SYMBOL(ieee80211_beacon_get_template_ema_list);
|
||||||
|
+
|
||||||
|
struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
|
||||||
|
struct ieee80211_vif *vif,
|
||||||
|
u16 *tim_offset, u16 *tim_length,
|
||||||
|
@@ -5414,7 +5524,9 @@ struct sk_buff *ieee80211_beacon_get_tim
|
||||||
|
{
|
||||||
|
struct ieee80211_mutable_offsets offs = {};
|
||||||
|
struct sk_buff *bcn = __ieee80211_beacon_get(hw, vif, &offs, false,
|
||||||
|
- link_id);
|
||||||
|
+ link_id,
|
||||||
|
+ IEEE80211_INCLUDE_ALL_MBSSID_ELEMS,
|
||||||
|
+ NULL);
|
||||||
|
struct sk_buff *copy;
|
||||||
|
int shift;
|
||||||
|
|
||||||
@ -77,7 +77,7 @@
|
|||||||
static void ieee80211_rfkill_poll(struct wiphy *wiphy)
|
static void ieee80211_rfkill_poll(struct wiphy *wiphy)
|
||||||
{
|
{
|
||||||
struct ieee80211_local *local = wiphy_priv(wiphy);
|
struct ieee80211_local *local = wiphy_priv(wiphy);
|
||||||
@@ -4953,6 +4966,7 @@ const struct cfg80211_ops mac80211_confi
|
@@ -4956,6 +4969,7 @@ const struct cfg80211_ops mac80211_confi
|
||||||
.set_wiphy_params = ieee80211_set_wiphy_params,
|
.set_wiphy_params = ieee80211_set_wiphy_params,
|
||||||
.set_tx_power = ieee80211_set_tx_power,
|
.set_tx_power = ieee80211_set_tx_power,
|
||||||
.get_tx_power = ieee80211_get_tx_power,
|
.get_tx_power = ieee80211_get_tx_power,
|
||||||
@ -87,7 +87,7 @@
|
|||||||
CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
|
CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
|
||||||
--- a/net/mac80211/ieee80211_i.h
|
--- a/net/mac80211/ieee80211_i.h
|
||||||
+++ b/net/mac80211/ieee80211_i.h
|
+++ b/net/mac80211/ieee80211_i.h
|
||||||
@@ -1538,6 +1538,7 @@ struct ieee80211_local {
|
@@ -1542,6 +1542,7 @@ struct ieee80211_local {
|
||||||
int dynamic_ps_forced_timeout;
|
int dynamic_ps_forced_timeout;
|
||||||
|
|
||||||
int user_power_level; /* in dBm, for all interfaces */
|
int user_power_level; /* in dBm, for all interfaces */
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user