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nl80211: allow multiple active scheduled scan requests

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This patch implements the idea to have multiple scheduled scan requests
running concurrently. It mainly illustrates how to deal with the incoming
request from user-space in terms of backward compatibility. In order to
use multiple scheduled scans user-space needs to provide a flag attribute
NL80211_ATTR_SCHED_SCAN_MULTI to indicate support. If not the request is
treated as a legacy scan.

Drivers currently supporting scheduled scan are now indicating they support
a single scheduled scan request. This obsoletes WIPHY_FLAG_SUPPORTS_SCHED_SCAN.

Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
[clean up netlink destroy path to avoid allocations, code cleanups]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Arend Van Spriel 2017-04-21 13:05:00 +01:00 • committed by Johannes Berg
parent ab81007a7b
commit ca986ad9bc
13 changed files with 205 additions and 64 deletions
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18
net/wireless/trace.h
View file

@ -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,