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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Cc: "Edmund Henniges" <eh@emlix.com>, "Daniel Glöckner" <dg@emlix.com>
Subject: [PATCH 16/16] net: Add ifdown support and command
Date: Wed, 11 Mar 2020 15:27:57 +0100	[thread overview]
Message-ID: <20200311142757.25263-17-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20200311142757.25263-1-s.hauer@pengutronix.de>

ifdown is the counterpart to ifup and disables one or all ethernet
interfaces.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 include/net.h |  4 +++
 net/ifup.c    | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 73 insertions(+)

diff --git a/include/net.h b/include/net.h
index 23e3759905..583dc14ed5 100644
--- a/include/net.h
+++ b/include/net.h
@@ -488,6 +488,10 @@ int ifup_edev(struct eth_device *edev, unsigned flags);
 int ifup(const char *name, unsigned flags);
 int ifup_all(unsigned flags);
 
+void ifdown_edev(struct eth_device *edev);
+int ifdown(const char *name);
+void ifdown_all(void);
+
 extern struct list_head netdev_list;
 
 #define for_each_netdev(netdev) list_for_each_entry(netdev, &netdev_list, list)
diff --git a/net/ifup.c b/net/ifup.c
index fa2c52ff8b..b76b4bc44c 100644
--- a/net/ifup.c
+++ b/net/ifup.c
@@ -237,6 +237,12 @@ int ifup_edev(struct eth_device *edev, unsigned flags)
 	return 0;
 }
 
+void ifdown_edev(struct eth_device *edev)
+{
+	eth_close(edev);
+	edev->ifup = false;
+}
+
 int ifup(const char *ethname, unsigned flags)
 {
 	struct eth_device *edev;
@@ -253,6 +259,19 @@ int ifup(const char *ethname, unsigned flags)
 	return ifup_edev(edev, flags);
 }
 
+int ifdown(const char *ethname)
+{
+	struct eth_device *edev;
+
+	edev = eth_get_byname(ethname);
+	if (!edev)
+		return -ENODEV;
+
+	ifdown_edev(edev);
+
+	return 0;
+}
+
 static int net_ifup_force_detect;
 
 int ifup_all(unsigned flags)
@@ -286,6 +305,14 @@ int ifup_all(unsigned flags)
 	return 0;
 }
 
+void ifdown_all(void)
+{
+	struct eth_device *edev;
+
+	for_each_netdev(edev)
+		ifdown_edev(edev);
+}
+
 static int ifup_all_init(void)
 {
 	globalvar_add_simple_bool("net.ifup_force_detect", &net_ifup_force_detect);
@@ -346,4 +373,46 @@ BAREBOX_CMD_START(ifup)
 	BAREBOX_CMD_HELP(cmd_ifup_help)
 BAREBOX_CMD_END
 
+static int do_ifdown(int argc, char *argv[])
+{
+	int opt;
+	int all = 0;
+
+	while ((opt = getopt(argc, argv, "a")) > 0) {
+		switch (opt) {
+		case 'a':
+			all = 1;
+			break;
+		}
+	}
+
+	if (all) {
+		ifdown_all();
+		return 0;
+	}
+
+	if (argc == optind)
+		return COMMAND_ERROR_USAGE;
+
+	return ifdown(argv[optind]);
+}
+
+
+
+BAREBOX_CMD_HELP_START(ifdown)
+BAREBOX_CMD_HELP_TEXT("Disable a network interface")
+BAREBOX_CMD_HELP_TEXT("")
+BAREBOX_CMD_HELP_TEXT("Options:")
+BAREBOX_CMD_HELP_OPT ("-a",  "disable all interfaces")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(ifdown)
+	.cmd		= do_ifdown,
+	BAREBOX_CMD_DESC("disable a network interface")
+	BAREBOX_CMD_OPTS("[-a] [INTF]")
+	BAREBOX_CMD_GROUP(CMD_GRP_NET)
+	BAREBOX_CMD_COMPLETE(eth_complete)
+	BAREBOX_CMD_HELP(cmd_ifdown_help)
+BAREBOX_CMD_END
+
 #endif
-- 
2.25.1


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      parent reply	other threads:[~2020-03-11 14:28 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-11 14:27 [PATCH v2 00/16] Protect code from pollers Sascha Hauer
2020-03-11 14:27 ` [PATCH 01/16] net: fec_imx: Do not clear MII interrupt during receive Sascha Hauer
2020-03-11 14:27 ` [PATCH 02/16] miitool: Use mdiobus_read() Sascha Hauer
2020-03-11 14:27 ` [PATCH 03/16] net: phy: mdio-mux: Use mdiobus_read/write() Sascha Hauer
2020-03-11 14:27 ` [PATCH 04/16] net: Open ethernet devices explicitly Sascha Hauer
2020-03-11 14:27 ` [PATCH 05/16] Introduce slices Sascha Hauer
2020-03-11 23:51   ` Daniel Glöckner
2020-03-12  8:24     ` Sascha Hauer
2020-03-12  9:18       ` Daniel Glöckner
2020-03-12 10:29         ` Sascha Hauer
2020-03-11 14:27 ` [PATCH 06/16] net: Add a slice to struct eth_device Sascha Hauer
2020-03-11 14:27 ` [PATCH 07/16] net: mdiobus: Add slice Sascha Hauer
2020-03-11 14:27 ` [PATCH 08/16] usb: Add a slice to usb host controllers Sascha Hauer
2020-03-11 14:27 ` [PATCH 09/16] usbnet: Add slice Sascha Hauer
2020-03-11 14:27 ` [PATCH 10/16] net: Call net_poll() in a poller Sascha Hauer
2020-03-11 14:27 ` [PATCH 11/16] net: reply to ping requests Sascha Hauer
2020-03-11 14:27 ` [PATCH 12/16] usbnet: Be more friendly in the receive path Sascha Hauer
2020-03-11 14:27 ` [PATCH 13/16] net: phy: Also print link down messages Sascha Hauer
2020-03-11 14:27 ` [PATCH 14/16] net: ifup command: add ethernet device completion Sascha Hauer
2020-03-11 14:27 ` [PATCH 15/16] net: phy: Do not claim the link is up initially Sascha Hauer
2020-03-11 14:27 ` Sascha Hauer [this message]

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