Return-path: Received: from mail-oi0-f65.google.com ([209.85.218.65]:35612 "EHLO mail-oi0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756324AbcGHW14 (ORCPT ); Fri, 8 Jul 2016 18:27:56 -0400 Received: by mail-oi0-f65.google.com with SMTP id e84so8333626oib.2 for ; Fri, 08 Jul 2016 15:27:56 -0700 (PDT) From: Denis Kenzior To: linux-wireless@vger.kernel.org Cc: Denis Kenzior Subject: [RFC v2 1/3] nl80211: Add nl80211_notify_iface Date: Sat, 9 Jul 2016 01:16:05 -0500 Message-Id: <1468044967-9236-2-git-send-email-denkenz@gmail.com> (sfid-20160709_002800_410396_A881790C) In-Reply-To: <1468044967-9236-1-git-send-email-denkenz@gmail.com> References: <1468044967-9236-1-git-send-email-denkenz@gmail.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: This function emits NL80211_CMD_NEW_INTERFACE or NL80211_CMD_DEL_INTERFACE events. This is meant to be used by the core to notify userspace applications such as wpa_supplicant when a netdev related to a wireless device has been added or removed. Signed-off-by: Denis Kenzior --- net/wireless/nl80211.c | 28 ++++++++++++++++++++++++++++ net/wireless/nl80211.h | 3 +++ 2 files changed, 31 insertions(+) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index f39fd4d..da03e17 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -11855,6 +11855,34 @@ void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, NL80211_MCGRP_CONFIG, GFP_KERNEL); } +void nl80211_notify_iface(struct cfg80211_registered_device *rdev, + struct wireless_dev *wdev, + enum nl80211_commands cmd) +{ + struct sk_buff *msg; + bool removal; + + WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE && + cmd != NL80211_CMD_DEL_INTERFACE); + + if (cmd == NL80211_CMD_DEL_INTERFACE) + removal = true; + else + removal = false; + + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); + if (!msg) + return; + + if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, removal) < 0) { + nlmsg_free(msg); + return; + } + + genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, + NL80211_MCGRP_CONFIG, GFP_KERNEL); +} + static int nl80211_add_scan_req(struct sk_buff *msg, struct cfg80211_registered_device *rdev) { diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h index a63f402..6f6b73c 100644 --- a/net/wireless/nl80211.h +++ b/net/wireless/nl80211.h @@ -7,6 +7,9 @@ int nl80211_init(void); void nl80211_exit(void); void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, enum nl80211_commands cmd); +void nl80211_notify_iface(struct cfg80211_registered_device *rdev, + struct wireless_dev *wdev, + enum nl80211_commands cmd); void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev); struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, -- 2.7.3