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-rw-r--r--drivers/net/wireless/ath/ath6kl/cfg80211.c2
-rw-r--r--drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c2
-rw-r--r--drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c2
-rw-r--r--drivers/net/wireless/marvell/mwifiex/cfg80211.c2
-rw-r--r--drivers/net/wireless/ti/wlcore/main.c2
-rw-r--r--include/net/cfg80211.h9
-rw-r--r--include/uapi/linux/nl80211.h12
-rw-r--r--net/wireless/core.c29
-rw-r--r--net/wireless/core.h11
-rw-r--r--net/wireless/nl80211.c63
-rw-r--r--net/wireless/rdev-ops.h2
-rw-r--r--net/wireless/scan.c115
-rw-r--r--net/wireless/trace.h18
13 files changed, 205 insertions, 64 deletions
diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c
index 0c118b7c362c..1906412afa70 100644
--- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
+++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
@@ -3973,7 +3973,7 @@ int ath6kl_cfg80211_init(struct ath6kl *ar)
WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, ar->fw_capabilities))
- ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
+ ar->wiphy->max_sched_scan_reqs = 1;
if (test_bit(ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT,
ar->fw_capabilities))
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index 8c7f1ef288c6..c71173dc9965 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -6374,11 +6374,11 @@ err:
static void brcmf_wiphy_pno_params(struct wiphy *wiphy)
{
/* scheduled scan settings */
+ wiphy->max_sched_scan_reqs = 1;
wiphy->max_sched_scan_ssids = BRCMF_PNO_MAX_PFN_COUNT;
wiphy->max_match_sets = BRCMF_PNO_MAX_PFN_COUNT;
wiphy->max_sched_scan_ie_len = BRCMF_SCAN_IE_LEN_MAX;
wiphy->max_sched_scan_plan_interval = BRCMF_PNO_SCHED_SCAN_MAX_PERIOD;
- wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
}
#ifdef CONFIG_PM
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index 5cdd95775ba6..8c58d47100a0 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -620,7 +620,7 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
else
hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
- hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
+ hw->wiphy->max_sched_scan_reqs = 1;
hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
/* we create the 802.11 header and zero length SSID IE. */
diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index 49b4c805b7d5..9927bd5aac56 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -4297,7 +4297,6 @@ int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME |
WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD |
WIPHY_FLAG_AP_UAPSD |
- WIPHY_FLAG_SUPPORTS_SCHED_SCAN |
WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
WIPHY_FLAG_HAS_CHANNEL_SWITCH |
WIPHY_FLAG_PS_ON_BY_DEFAULT;
@@ -4316,6 +4315,7 @@ int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
+ wiphy->max_sched_scan_reqs = 1;
wiphy->max_sched_scan_ssids = MWIFIEX_MAX_SSID_LIST_LENGTH;
wiphy->max_sched_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
wiphy->max_match_sets = MWIFIEX_MAX_SSID_LIST_LENGTH;
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index a21fda910529..382ec15ec1af 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -6128,6 +6128,7 @@ static int wl1271_init_ieee80211(struct wl1271 *wl)
wl->hw->wiphy->max_scan_ie_len = WL1271_CMD_TEMPL_MAX_SIZE -
sizeof(struct ieee80211_header);
+ wl->hw->wiphy->max_sched_scan_reqs = 1;
wl->hw->wiphy->max_sched_scan_ie_len = WL1271_CMD_TEMPL_MAX_SIZE -
sizeof(struct ieee80211_header);
@@ -6135,7 +6136,6 @@ static int wl1271_init_ieee80211(struct wl1271 *wl)
wl->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD |
WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
- WIPHY_FLAG_SUPPORTS_SCHED_SCAN |
WIPHY_FLAG_HAS_CHANNEL_SWITCH;
wl->hw->wiphy->features |= NL80211_FEATURE_AP_SCAN;
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index af958938b3b1..43c0f389c273 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1678,6 +1678,8 @@ struct cfg80211_bss_select_adjust {
* @rcu_head: RCU callback used to free the struct
* @owner_nlportid: netlink portid of owner (if this should is a request
* owned by a particular socket)
+ * @nl_owner_dead: netlink owner socket was closed - this request be freed
+ * @list: for keeping list of requests.
* @delay: delay in seconds to use before starting the first scan
* cycle. The driver may ignore this parameter and start
* immediately (or at any other time), if this feature is not
@@ -1722,6 +1724,8 @@ struct cfg80211_sched_scan_request {
unsigned long scan_start;
struct rcu_head rcu_head;
u32 owner_nlportid;
+ bool nl_owner_dead;
+ struct list_head list;
/* keep last */
struct ieee80211_channel *channels[0];
@@ -3213,7 +3217,7 @@ enum wiphy_flags {
WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7),
WIPHY_FLAG_IBSS_RSN = BIT(8),
WIPHY_FLAG_MESH_AUTH = BIT(10),
- WIPHY_FLAG_SUPPORTS_SCHED_SCAN = BIT(11),
+ /* use hole at 11 */
/* use hole at 12 */
WIPHY_FLAG_SUPPORTS_FW_ROAM = BIT(13),
WIPHY_FLAG_AP_UAPSD = BIT(14),
@@ -3551,6 +3555,8 @@ struct wiphy_iftype_ext_capab {
* this variable determines its size
* @max_scan_ssids: maximum number of SSIDs the device can scan for in
* any given scan
+ * @max_sched_scan_reqs: maximum number of scheduled scan requests that
+ * the device can run concurrently.
* @max_sched_scan_ssids: maximum number of SSIDs the device can scan
* for in any given scheduled scan
* @max_match_sets: maximum number of match sets the device can handle
@@ -3687,6 +3693,7 @@ struct wiphy {
int bss_priv_size;
u8 max_scan_ssids;
+ u8 max_sched_scan_reqs;
u8 max_sched_scan_ssids;
u8 max_match_sets;
u16 max_scan_ie_len;
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 6095a6c4c412..f34127d241e5 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -387,7 +387,9 @@
* are used. Extra IEs can also be passed from the userspace by
* using the %NL80211_ATTR_IE attribute. The first cycle of the
* scheduled scan can be delayed by %NL80211_ATTR_SCHED_SCAN_DELAY
- * is supplied.
+ * is supplied. If the device supports multiple concurrent scheduled
+ * scans, it will allow such when the caller provides the flag attribute
+ * %NL80211_ATTR_SCHED_SCAN_MULTI to indicate user-space support for it.
* @NL80211_CMD_STOP_SCHED_SCAN: stop a scheduled scan. Returns -ENOENT if
* scheduled scan is not running. The caller may assume that as soon
* as the call returns, it is safe to start a new scheduled scan again.
@@ -2081,6 +2083,11 @@ enum nl80211_commands {
* @NL80211_ATTR_PMK: PMK for the PMKSA identified by %NL80211_ATTR_PMKID.
* This is used with @NL80211_CMD_SET_PMKSA.
*
+ * @NL80211_ATTR_SCHED_SCAN_MULTI: flag attribute which user-space shall use to
+ * indicate that it supports multiple active scheduled scan requests.
+ * @NL80211_ATTR_SCHED_SCAN_MAX_REQS: indicates maximum number of scheduled
+ * scan request that may be active for the device (u32).
+ *
* @NUM_NL80211_ATTR: total number of nl80211_attrs available
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@@ -2500,6 +2507,9 @@ enum nl80211_attrs {
NL80211_ATTR_PMK,
+ NL80211_ATTR_SCHED_SCAN_MULTI,
+ NL80211_ATTR_SCHED_SCAN_MAX_REQS,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 4ea28de3a636..a3c0c48afb85 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -330,14 +330,16 @@ static void cfg80211_destroy_iface_wk(struct work_struct *work)
static void cfg80211_sched_scan_stop_wk(struct work_struct *work)
{
struct cfg80211_registered_device *rdev;
+ struct cfg80211_sched_scan_request *req, *tmp;
rdev = container_of(work, struct cfg80211_registered_device,
sched_scan_stop_wk);
rtnl_lock();
-
- __cfg80211_stop_sched_scan(rdev, false);
-
+ list_for_each_entry_safe(req, tmp, &rdev->sched_scan_req_list, list) {
+ if (req->nl_owner_dead)
+ cfg80211_stop_sched_scan_req(rdev, req, false);
+ }
rtnl_unlock();
}
@@ -452,6 +454,7 @@ use_default_name:
spin_lock_init(&rdev->beacon_registrations_lock);
spin_lock_init(&rdev->bss_lock);
INIT_LIST_HEAD(&rdev->bss_list);
+ INIT_LIST_HEAD(&rdev->sched_scan_req_list);
INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done);
INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results);
INIT_LIST_HEAD(&rdev->mlme_unreg);
@@ -1028,7 +1031,7 @@ void __cfg80211_leave(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev)
{
struct net_device *dev = wdev->netdev;
- struct cfg80211_sched_scan_request *sched_scan_req;
+ struct cfg80211_sched_scan_request *pos, *tmp;
ASSERT_RTNL();
ASSERT_WDEV_LOCK(wdev);
@@ -1039,9 +1042,11 @@ void __cfg80211_leave(struct cfg80211_registered_device *rdev,
break;
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_STATION:
- sched_scan_req = rtnl_dereference(rdev->sched_scan_req);
- if (sched_scan_req && dev == sched_scan_req->dev)
- __cfg80211_stop_sched_scan(rdev, false);
+ list_for_each_entry_safe(pos, tmp, &rdev->sched_scan_req_list,
+ list) {
+ if (dev == pos->dev)
+ cfg80211_stop_sched_scan_req(rdev, pos, false);
+ }
#ifdef CONFIG_CFG80211_WEXT
kfree(wdev->wext.ie);
@@ -1116,7 +1121,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev;
- struct cfg80211_sched_scan_request *sched_scan_req;
+ struct cfg80211_sched_scan_request *pos, *tmp;
if (!wdev)
return NOTIFY_DONE;
@@ -1193,10 +1198,10 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
___cfg80211_scan_done(rdev, false);
}
- sched_scan_req = rtnl_dereference(rdev->sched_scan_req);
- if (WARN_ON(sched_scan_req &&
- sched_scan_req->dev == wdev->netdev)) {
- __cfg80211_stop_sched_scan(rdev, false);
+ list_for_each_entry_safe(pos, tmp,
+ &rdev->sched_scan_req_list, list) {
+ if (WARN_ON(pos && pos->dev == wdev->netdev))
+ cfg80211_stop_sched_scan_req(rdev, pos, false);
}
rdev->opencount--;
diff --git a/net/wireless/core.h b/net/wireless/core.h
index f9b748e3425a..06eaf96053a8 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -74,7 +74,7 @@ struct cfg80211_registered_device {
u32 bss_entries;
struct cfg80211_scan_request *scan_req; /* protected by RTNL */
struct sk_buff *scan_msg;
- struct cfg80211_sched_scan_request __rcu *sched_scan_req;
+ struct list_head sched_scan_req_list;
unsigned long suspend_at;
struct work_struct scan_done_wk;
struct work_struct sched_scan_results_wk;
@@ -416,9 +416,16 @@ int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
void __cfg80211_scan_done(struct work_struct *wk);
void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
bool send_message);
+void cfg80211_add_sched_scan_req(struct cfg80211_registered_device *rdev,
+ struct cfg80211_sched_scan_request *req);
+int cfg80211_sched_scan_req_possible(struct cfg80211_registered_device *rdev,
+ bool want_multi);
void __cfg80211_sched_scan_results(struct work_struct *wk);
+int cfg80211_stop_sched_scan_req(struct cfg80211_registered_device *rdev,
+ struct cfg80211_sched_scan_request *req,
+ bool driver_initiated);
int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
- bool driver_initiated);
+ u64 reqid, bool driver_initiated);
void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
struct net_device *dev, enum nl80211_iftype ntype,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 45f5f418e562..ac7e2314f9ec 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -419,6 +419,7 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
.len = FILS_ERP_MAX_RRK_LEN },
[NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 },
[NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
+ [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
};
/* policy for the key attributes */
@@ -1376,7 +1377,7 @@ static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
CMD(tdls_mgmt, TDLS_MGMT);
CMD(tdls_oper, TDLS_OPER);
}
- if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
+ if (rdev->wiphy.max_sched_scan_reqs)
CMD(sched_scan_start, START_SCHED_SCAN);
CMD(probe_client, PROBE_CLIENT);
CMD(set_noack_map, SET_NOACK_MAP);
@@ -1815,6 +1816,11 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
goto nla_put_failure;
+ if (rdev->wiphy.max_sched_scan_reqs &&
+ nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
+ rdev->wiphy.max_sched_scan_reqs))
+ goto nla_put_failure;
+
if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
sizeof(rdev->wiphy.ext_features),
rdev->wiphy.ext_features))
@@ -7336,14 +7342,16 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_sched_scan_request *sched_scan_req;
+ bool want_multi;
int err;
- if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
- !rdev->ops->sched_scan_start)
+ if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
return -EOPNOTSUPP;
- if (rdev->sched_scan_req)
- return -EINPROGRESS;
+ want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
+ err = cfg80211_sched_scan_req_possible(rdev, want_multi);
+ if (err)
+ return err;
sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
info->attrs,
@@ -7353,6 +7361,14 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
if (err)
goto out_err;
+ /* leave request id zero for legacy request
+ * or if driver does not support multi-scheduled scan
+ */
+ if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
+ while (!sched_scan_req->reqid)
+ sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
+ }
+
err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
if (err)
goto out_free;
@@ -7363,7 +7379,7 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
sched_scan_req->owner_nlportid = info->snd_portid;
- rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
+ cfg80211_add_sched_scan_req(rdev, sched_scan_req);
nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
return 0;
@@ -7377,13 +7393,27 @@ out_err:
static int nl80211_stop_sched_scan(struct sk_buff *skb,
struct genl_info *info)
{
+ struct cfg80211_sched_scan_request *req;
struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ u64 cookie;
- if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
- !rdev->ops->sched_scan_stop)
+ if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
return -EOPNOTSUPP;
- return __cfg80211_stop_sched_scan(rdev, false);
+ if (info->attrs[NL80211_ATTR_COOKIE]) {
+ cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
+ return __cfg80211_stop_sched_scan(rdev, cookie, false);
+ }
+
+ req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
+ struct cfg80211_sched_scan_request,
+ list);
+ if (!req || req->reqid ||
+ (req->owner_nlportid &&
+ req->owner_nlportid != info->snd_portid))
+ return -ENOENT;
+
+ return cfg80211_stop_sched_scan_req(rdev, req, false);
}
static int nl80211_start_radar_detection(struct sk_buff *skb,
@@ -14883,16 +14913,15 @@ static int nl80211_netlink_notify(struct notifier_block * nb,
rcu_read_lock();
list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
- struct cfg80211_sched_scan_request *sched_scan_req =
- rcu_dereference(rdev->sched_scan_req);
-
- if (sched_scan_req && notify->portid &&
- sched_scan_req->owner_nlportid == notify->portid) {
- sched_scan_req->owner_nlportid = 0;
+ struct cfg80211_sched_scan_request *sched_scan_req;
- if (rdev->ops->sched_scan_stop &&
- rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
+ list_for_each_entry_rcu(sched_scan_req,
+ &rdev->sched_scan_req_list,
+ list) {
+ if (sched_scan_req->owner_nlportid == notify->portid) {
+ sched_scan_req->nl_owner_dead = true;
schedule_work(&rdev->sched_scan_stop_wk);
+ }
}
list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h
index e4a99989dd06..783f89c3e504 100644
--- a/net/wireless/rdev-ops.h
+++ b/net/wireless/rdev-ops.h
@@ -813,7 +813,7 @@ rdev_sched_scan_start(struct cfg80211_registered_device *rdev,
struct cfg80211_sched_scan_request *request)
{
int ret;
- trace_rdev_sched_scan_start(&rdev->wiphy, dev, request);
+ trace_rdev_sched_scan_start(&rdev->wiphy, dev, request->reqid);
ret = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
trace_rdev_return_int(&rdev->wiphy, ret);
return ret;
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 6f4996c0f4df..bd9feed95c1e 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -300,6 +300,70 @@ void cfg80211_scan_done(struct cfg80211_scan_request *request,
}
EXPORT_SYMBOL(cfg80211_scan_done);
+void cfg80211_add_sched_scan_req(struct cfg80211_registered_device *rdev,
+ struct cfg80211_sched_scan_request *req)
+{
+ ASSERT_RTNL();
+
+ list_add_rcu(&req->list, &rdev->sched_scan_req_list);
+}
+
+static void cfg80211_del_sched_scan_req(struct cfg80211_registered_device *rdev,
+ struct cfg80211_sched_scan_request *req)
+{
+ ASSERT_RTNL();
+
+ list_del_rcu(&req->list);
+ kfree_rcu(req, rcu_head);
+}
+
+static struct cfg80211_sched_scan_request *
+cfg80211_find_sched_scan_req(struct cfg80211_registered_device *rdev, u64 reqid)
+{
+ struct cfg80211_sched_scan_request *pos;
+
+ ASSERT_RTNL();
+
+ list_for_each_entry(pos, &rdev->sched_scan_req_list, list) {
+ if (pos->reqid == reqid)
+ return pos;
+ }
+ return ERR_PTR(-ENOENT);
+}
+
+/*
+ * Determines if a scheduled scan request can be handled. When a legacy
+ * scheduled scan is running no other scheduled scan is allowed regardless
+ * whether the request is for legacy or multi-support scan. When a multi-support
+ * scheduled scan is running a request for legacy scan is not allowed. In this
+ * case a request for multi-support scan can be handled if resources are
+ * available, ie. struct wiphy::max_sched_scan_reqs limit is not yet reached.
+ */
+int cfg80211_sched_scan_req_possible(struct cfg80211_registered_device *rdev,
+ bool want_multi)
+{
+ struct cfg80211_sched_scan_request *pos;
+ int i = 0;
+
+ list_for_each_entry(pos, &rdev->sched_scan_req_list, list) {
+ /* request id zero means legacy in progress */
+ if (!i && !pos->reqid)
+ return -EINPROGRESS;
+ i++;
+ }
+
+ if (i) {
+ /* no legacy allowed when multi request(s) are active */
+ if (!want_multi)
+ return -EINPROGRESS;
+
+ /* resource limit reached */
+ if (i == rdev->wiphy.max_sched_scan_reqs)
+ return -ENOSPC;
+ }
+ return 0;
+}
+
void __cfg80211_sched_scan_results(struct work_struct *wk)
{
struct cfg80211_registered_device *rdev;
@@ -310,10 +374,10 @@ void __cfg80211_sched_scan_results(struct work_struct *wk)
rtnl_lock();
- request = rtnl_dereference(rdev->sched_scan_req);
+ request = cfg80211_find_sched_scan_req(rdev, 0);
/* we don't have sched_scan_req anymore if the scan is stopping */
- if (request) {
+ if (!IS_ERR(request)) {
if (request->flags & NL80211_SCAN_FLAG_FLUSH) {
/* flush entries from previous scans */
spin_lock_bh(&rdev->bss_lock);
@@ -329,10 +393,17 @@ void __cfg80211_sched_scan_results(struct work_struct *wk)
void cfg80211_sched_scan_results(struct wiphy *wiphy)
{
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+ struct cfg80211_sched_scan_request *request;
+
trace_cfg80211_sched_scan_results(wiphy);
/* ignore if we're not scanning */
- if (rcu_access_pointer(wiphy_to_rdev(wiphy)->sched_scan_req))
+ rtnl_lock();
+ request = cfg80211_find_sched_scan_req(rdev, 0);
+ rtnl_unlock();
+
+ if (!IS_ERR(request))
queue_work(cfg80211_wq,
&wiphy_to_rdev(wiphy)->sched_scan_results_wk);
}
@@ -346,7 +417,7 @@ void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy)
trace_cfg80211_sched_scan_stopped(wiphy);
- __cfg80211_stop_sched_scan(rdev, true);
+ __cfg80211_stop_sched_scan(rdev, 0, true);
}
EXPORT_SYMBOL(cfg80211_sched_scan_stopped_rtnl);
@@ -358,34 +429,40 @@ void cfg80211_sched_scan_stopped(struct wiphy *wiphy)
}
EXPORT_SYMBOL(cfg80211_sched_scan_stopped);
-int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
- bool driver_initiated)
+int cfg80211_stop_sched_scan_req(struct cfg80211_registered_device *rdev,
+ struct cfg80211_sched_scan_request *req,
+ bool driver_initiated)
{
- struct cfg80211_sched_scan_request *sched_scan_req;
- struct net_device *dev;
-
ASSERT_RTNL();
- if (!rdev->sched_scan_req)
- return -ENOENT;
-
- sched_scan_req = rtnl_dereference(rdev->sched_scan_req);
- dev = sched_scan_req->dev;
-
if (!driver_initiated) {
- int err = rdev_sched_scan_stop(rdev, dev);
+ int err = rdev_sched_scan_stop(rdev, req->dev);
if (err)
return err;
}
- nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_SCHED_SCAN_STOPPED);
+ nl80211_send_sched_scan(req, NL80211_CMD_SCHED_SCAN_STOPPED);
- RCU_INIT_POINTER(rdev->sched_scan_req, NULL);
- kfree_rcu(sched_scan_req, rcu_head);
+ cfg80211_del_sched_scan_req(rdev, req);
return 0;
}
+int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
+ u64 reqid, bool driver_initiated)
+{
+ struct cfg80211_sched_scan_request *sched_scan_req;
+
+ ASSERT_RTNL();
+
+ sched_scan_req = cfg80211_find_sched_scan_req(rdev, reqid);
+ if (IS_ERR(sched_scan_req))
+ return PTR_ERR(sched_scan_req);
+
+ return cfg80211_stop_sched_scan_req(rdev, sched_scan_req,
+ driver_initiated);
+}
+
void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
unsigned long age_secs)
{
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index fd55786f0462..52935c48b342 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -1610,20 +1610,26 @@ DEFINE_EVENT(tx_rx_evt, rdev_set_antenna,
TP_ARGS(wiphy, rx, tx)
);
-TRACE_EVENT(rdev_sched_scan_start,
- TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
- struct cfg80211_sched_scan_request *request),
- TP_ARGS(wiphy, netdev, request),
+DECLARE_EVENT_CLASS(wiphy_netdev_id_evt,
+ TP_PROTO(struct wiphy *wiphy, struct net_device *netdev, u64 id),
+ TP_ARGS(wiphy, netdev, id),
TP_STRUCT__entry(
WIPHY_ENTRY
NETDEV_ENTRY
+ __field(u64, id)
),
TP_fast_assign(
WIPHY_ASSIGN;
NETDEV_ASSIGN;
+ __entry->id = id;
),
- TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT,
- WIPHY_PR_ARG, NETDEV_PR_ARG)
+ TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT ", id: %llu",
+ WIPHY_PR_ARG, NETDEV_PR_ARG, __entry->id)
+);
+
+DEFINE_EVENT(wiphy_netdev_id_evt, rdev_sched_scan_start,
+ TP_PROTO(struct wiphy *wiphy, struct net_device *netdev, u64 id),
+ TP_ARGS(wiphy, netdev, id)
);
TRACE_EVENT(rdev_tdls_mgmt,
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-10 10:44:55 +0300