On 24-3-2016 16:12, Emmanuel Grumbach wrote:
> This allows user space to start/stop NAN interface.
> A NAN interface is like P2P device in a few aspects: it
> doesn't have a netdev associated to it.
> Add the new interface type and prevent operations that
> can't be executed on NAN interface like scan.
> Define several attributes that may be configured by user space
> when starting NAN functionality (master preference and dual
> band operation)
>
> Signed-off-by: Andrei Otcheretianski <[email protected]>
> Signed-off-by: Emmanuel Grumbach <[email protected]>
> ---
> v2: allow master preference 1 and 255 as required by the certification
> ---
> include/net/cfg80211.h | 21 +++++++++-
> include/uapi/linux/nl80211.h | 44 ++++++++++++++++++++
> net/mac80211/cfg.c | 2 +
> net/mac80211/chan.c | 3 ++
> net/mac80211/iface.c | 4 ++
> net/mac80211/offchannel.c | 1 +
> net/mac80211/rx.c | 3 ++
> net/mac80211/util.c | 1 +
> net/wireless/chan.c | 2 +
> net/wireless/core.c | 34 ++++++++++++++++
> net/wireless/core.h | 3 ++
> net/wireless/mlme.c | 1 +
> net/wireless/nl80211.c | 96
> ++++++++++++++++++++++++++++++++++++++++++--
> net/wireless/rdev-ops.h | 20 +++++++++
> net/wireless/trace.h | 27 +++++++++++++
> net/wireless/util.c | 6 ++-
> 16 files changed, 261 insertions(+), 7 deletions(-)
>
> diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
> index 9e1b24c..cb5ab88 100644
> --- a/include/net/cfg80211.h
> +++ b/include/net/cfg80211.h
> @@ -2228,6 +2228,19 @@ struct cfg80211_qos_map {
> };
>
> /**
> + * struct cfg80211_nan_conf - nan configuration
> + *
> + * This struct defines nan configuration parameters
> + *
> + * @master_pref: master preference (2 -254)
This seems to contradict the change log above...
> + * @dual: dual band operation mode
> + */
> +struct cfg80211_nan_conf {
> + u8 master_pref;
> + enum nl80211_nan_dual_band_conf dual;
> +};
> +
> +/**
> * struct cfg80211_ops - backend description for wireless configuration
> *
> * This struct is registered by fullmac card drivers and/or wireless stacks
> @@ -2500,6 +2513,8 @@ struct cfg80211_qos_map {
> * and returning to the base channel for communication with the AP.
> * @tdls_cancel_channel_switch: Stop channel-switching with a TDLS peer. Both
> * peers must be on the base channel when the call completes.
> + * @start_nan: Start the NAN interface.
> + * @stop_nan: Stop the NAN interface.
> */
> struct cfg80211_ops {
> int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
> @@ -2765,6 +2780,9 @@ struct cfg80211_ops {
> void (*tdls_cancel_channel_switch)(struct wiphy *wiphy,
> struct net_device *dev,
> const u8 *addr);
> + int (*start_nan)(struct wiphy *wiphy, struct wireless_dev *wdev,
> + struct cfg80211_nan_conf *conf);
> + void (*stop_nan)(struct wiphy *wiphy, struct wireless_dev *wdev);
> };
>
> /*
> @@ -3486,6 +3504,7 @@ struct cfg80211_cached_keys;
> * beacons, 0 when not valid
> * @address: The address for this device, valid only if @netdev is %NULL
> * @p2p_started: true if this is a P2P Device that has been started
> + * @nan_started: true if this is a NAN interface that has been started
> * @cac_started: true if DFS channel availability check has been started
> * @cac_start_time: timestamp (jiffies) when the dfs state was entered.
> * @cac_time_ms: CAC time in ms
> @@ -3517,7 +3536,7 @@ struct wireless_dev {
>
> struct mutex mtx;
>
> - bool use_4addr, p2p_started;
> + bool use_4addr, p2p_started, nan_started;
>
> u8 address[ETH_ALEN] __aligned(sizeof(u16));
>
> diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
> index 5a30a75..e5a7cfb 100644
> --- a/include/uapi/linux/nl80211.h
> +++ b/include/uapi/linux/nl80211.h
> @@ -824,6 +824,16 @@
> * not running. The driver indicates the status of the scan through
> * cfg80211_scan_done().
> *
> + * @NL80211_CMD_START_NAN: Start NAN operation, identified by its
> + * %NL80211_ATTR_WDEV interface. This interface must have been previously
> + * created with %NL80211_CMD_NEW_INTERFACE. After it has been started, the
> + * NAN interface will create or join a cluster. This command must have a
> + * valid %NL80211_ATTR_NAN_MASTER_PREF attribute and optional
> + * %NL80211_ATTR_NAN_DUAL attributes.
> + * After this command NAN functions can be added.
> + * @NL80211_CMD_STOP_NAN: Stop the NAN operation, identified by
> + * its %NL80211_ATTR_WDEV interface.
> + *
> * @NL80211_CMD_MAX: highest used command number
> * @__NL80211_CMD_AFTER_LAST: internal use
> */
> @@ -1012,6 +1022,9 @@ enum nl80211_commands {
>
> NL80211_CMD_ABORT_SCAN,
>
> + NL80211_CMD_START_NAN,
> + NL80211_CMD_STOP_NAN,
> +
> /* add new commands above here */
>
> /* used to define NL80211_CMD_MAX below */
> @@ -1796,6 +1809,12 @@ enum nl80211_commands {
> * connecting to a PCP, and in %NL80211_CMD_START_AP to start
> * a PCP instead of AP. Relevant for DMG networks only.
> *
> + * @NL80211_ATTR_NAN_MASTER_PREF: the master preference to be used by
> + * &NL80211_CMD_START_NAN. Its type is u8 and it can't be 0, 1 or 255.
... and this as well.
Regards,
Arend
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