Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Received-SPF: Pass (esa4.microchip.iphmx.com: domain of
  Horatiu.Vultur@microchip.com designates 198.175.253.82 as
  permitted sender) identity=mailfrom;
  client-ip=198.175.253.82; receiver=esa4.microchip.iphmx.com;
  envelope-from="Horatiu.Vultur@microchip.com";
  x-sender="Horatiu.Vultur@microchip.com";
  x-conformance=spf_only; x-record-type="v=spf1";
  x-record-text="v=spf1 mx a:ushub1.microchip.com
  a:smtpout.microchip.com a:mx1.microchip.iphmx.com
  a:mx2.microchip.iphmx.com include:servers.mcsv.net
  include:mktomail.com include:spf.protection.outlook.com ~all"
Received-SPF: None (esa4.microchip.iphmx.com: no sender
  authenticity information available from domain of
  postmaster@email.microchip.com) identity=helo;
  client-ip=198.175.253.82; receiver=esa4.microchip.iphmx.com;
  envelope-from="Horatiu.Vultur@microchip.com";
  x-sender="postmaster@email.microchip.com";
  x-conformance=spf_only
IronPort-SDR: K9qjtGmCkJXBZS9NtJNMUdFoe0jVZbYtANKuCmWcNL+LbstwSn9gMVdmw8mhY90L5hmvky6dkC
 srJgJAytZf/v+TdHfCL1faz9HTq9co5ufWD1gHxEyrsz3pTiRDf3NgmOciNK6+3g3qAb+mzW5l
 jRXsoUMCQjFAUVeFBynQjcep5sWVa+IaH0AHwTM6zlpCl/gaL5Z3iqv3BxJ8wPEdM3Hsf6vZtR
 vIsjIDHX2sgtV8jD9ItnyDuzfl/9vOv9PNQr+ZWGl6Ro8ag7oiHFHBauLqes2A9OSYhmH3fhxE
 OYM=
From:   Horatiu Vultur <horatiu.vultur@microchip.com>
To:     <alexandre.belloni@bootlin.com>, <UNGLinuxDriver@microchip.com>,
        <davem@davemloft.net>, <andrew@lunn.ch>,
        <allan.nielsen@microchip.com>, <jiri@resnulli.us>,
        <ivecera@redhat.com>, <f.fainelli@gmail.com>,
        <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>
CC:     Horatiu Vultur <horatiu.vultur@microchip.com>
Subject: [PATCH v3 1/2] net: core: Notify on changes to dev->promiscuity.
Date:   Thu, 29 Aug 2019 11:22:28 +0200
Message-ID: <1567070549-29255-2-git-send-email-horatiu.vultur@microchip.com>
In-Reply-To: <1567070549-29255-1-git-send-email-horatiu.vultur@microchip.com>
References: <1567070549-29255-1-git-send-email-horatiu.vultur@microchip.com>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Add the SWITCHDEV_ATTR_ID_PORT_PROMISCUITY switchdev notification type,
used to indicate whenever the dev promiscuity counter is changed.

The notification doesn't use any switchdev_attr attribute because in the
notifier callbacks is it possible to get the dev and read directly
the promiscuity value.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
 include/net/switchdev.h | 1 +
 net/core/dev.c          | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index aee86a1..14b1617 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -40,6 +40,7 @@ enum switchdev_attr_id {
 	SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
 	SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
 	SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
+	SWITCHDEV_ATTR_ID_PORT_PROMISCUITY,
 };
 
 struct switchdev_attr {
diff --git a/net/core/dev.c b/net/core/dev.c
index 49589ed..40c74f2 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -142,6 +142,7 @@
 #include <linux/net_namespace.h>
 #include <linux/indirect_call_wrapper.h>
 #include <net/devlink.h>
+#include <net/switchdev.h>
 
 #include "net-sysfs.h"
 
@@ -7377,6 +7378,11 @@ static void dev_change_rx_flags(struct net_device *dev, int flags)
 static int __dev_set_promiscuity(struct net_device *dev, int inc, bool notify)
 {
 	unsigned int old_flags = dev->flags;
+	struct switchdev_attr attr = {
+		.orig_dev = dev,
+		.id = SWITCHDEV_ATTR_ID_PORT_PROMISCUITY,
+		.flags = SWITCHDEV_F_DEFER,
+	};
 	kuid_t uid;
 	kgid_t gid;
 
@@ -7419,6 +7425,9 @@ static int __dev_set_promiscuity(struct net_device *dev, int inc, bool notify)
 	}
 	if (notify)
 		__dev_notify_flags(dev, old_flags, IFF_PROMISC);
+
+	switchdev_port_attr_set(dev, &attr);
+
 	return 0;
 }
 
-- 
2.7.4