On 21.02.2018 14:03, Arend van Spriel wrote:
On 2/21/2018 11:56 AM, Sergey Matyukevich wrote:From: Dmitry Lebed <dlebed@xxxxxxxxxxxxx> Add wiphy flag to indicate that HW does all DFS actions by itself. User-space functionality already implemented in hostapd using vendor-specific (QCA) OUI to advertise HW support. Need to introduce generic flag to inform about DFS offload support. For deivces with DFS_OFFLOAD flag set user-space will no longer need to issue CAC or do any actions in response to "radar detected" events. HW will do everything by itself and send events to user-space to idicate that CAC was started/finished, etc. Signed-off-by: Dmitrii Lebed <dlebed@xxxxxxxxxxxxx> --- include/net/cfg80211.h | 7 ++++++- include/uapi/linux/nl80211.h | 9 +++++++++ net/wireless/nl80211.c | 7 +++++++ 3 files changed, 22 insertions(+), 1 deletion(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index ed3a28105d6c..b2d17993ae4d 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -3241,6 +3241,11 @@ struct cfg80211_ops { * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing * auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH. + * @WIPHY_FLAG_DFS_OFFLOAD: Device will do all DFS-related actions by itself, + * informing user-space about CAC progress, radar detection event, + * channel change triggered by radar detection event. + * No need to start CAC from user-space, no need to react to + * "radar detected" event.wiphy flags are kinda deprecated. At least no new flags should be added. Instead use EXT_FEATURE flag. Regards, Arend
Thanks for clarification, Arend. I'll change it to use new EXT_FEATURE flag. BTW, are there any concerns regarding adding generic DFS_OFFLOAD driver capability? I want to add DFS_OFFLOAD support to qtnfmac driver and fix hostapd to support generic EXT_FEATURE flag as well as vendor-specific capabilities. Thanks, Dmitrii
* @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the * firmware. * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP.
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