From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 12 Mar 2025 14:56:49 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tsMZl-00D9BQ-30 for lore@lore.pengutronix.de; Wed, 12 Mar 2025 14:56:49 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tsMZk-0008R2-J6 for lore@pengutronix.de; Wed, 12 Mar 2025 14:56:49 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=Rs9biKAVqqhAsqGdjX0L2xoap5hZVxRRVHvsluxIsnU=; b=KbNvZFtExVCuBwgN/UnMsEEfy6 8X+nnbmgIBXJOanPutWe8FW2M1eQ9/3viexPw1Rs3M/oSXbVDDqGgoQfUR7VXXANRREQr31ccU0GS P7SoM0XtTTlUeSaPvc/aL0xaqGv3vGvmNreoGl3uu85zfYz/wIvg8ACLIWLJFqleZfd5PevEat143 MQvV40OF6aQKjm31PwBTs+tfM0T0UdZHx9QLn104OvmFX9fg2iohnkLG8Lc+l2aQTbGeoi3Ghg1A9 4Fx21SNX/CUMTNhgfz6h1IUBjrjTTYE5tDBG4w4m9snAxgCI623m36BcxSZHyrouQPEjykMWHo9/1 h49Ztrcw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tsMZB-00000008dHR-3OSu; Wed, 12 Mar 2025 13:56:13 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tsMOx-00000008c1Z-1qCc for barebox@lists.infradead.org; Wed, 12 Mar 2025 13:45:40 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tsMOw-0007IY-6p; Wed, 12 Mar 2025 14:45:38 +0100 Received: from dude04.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::ac]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tsMOw-005Mrv-02; Wed, 12 Mar 2025 14:45:38 +0100 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1tsMOv-00DYsY-35; Wed, 12 Mar 2025 14:45:37 +0100 From: Oleksij Rempel To: barebox@lists.infradead.org Cc: Oleksij Rempel Date: Wed, 12 Mar 2025 14:45:36 +0100 Message-Id: <20250312134536.3232324-1-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.5 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250312_064539_481748_45EEF37D X-CRM114-Status: GOOD ( 18.62 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.9 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v1] commands: Add `ip` command for listing interfaces, addresses, and routes X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) This patch introduces the `ip` command, providing functionality similar to Linux’s `ip` tool, catering to users with strong Linux muscle memory. It supports: - `ip l` / `ip link` - Show network interfaces (state, MAC address) - `ip a` / `ip addr` - Show assigned IP addresses and netmasks - `ip r` / `ip route` - Show routing table, including default gateway, interface-specific routes, DNS, and server IP. Signed-off-by: Oleksij Rempel --- commands/Kconfig | 9 +++ commands/Makefile | 1 + commands/ip.c | 157 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 167 insertions(+) create mode 100644 commands/ip.c diff --git a/commands/Kconfig b/commands/Kconfig index e41625e294c9..528b30b8fc90 100644 --- a/commands/Kconfig +++ b/commands/Kconfig @@ -1397,6 +1397,15 @@ config CMD_TFTP Options: -p push to TFTP server +config CMD_IP + tristate + prompt "ip" + default y + help + This command provides information about network interfaces, similar + to the Linux `ip addr show` command. It lists interface names, states + (UP/DOWN), MAC addresses, and assigned IP addresses. + config CMD_IP_ROUTE_GET tristate prompt "ip-route-get" diff --git a/commands/Makefile b/commands/Makefile index e152e4148b04..c202cdef5703 100644 --- a/commands/Makefile +++ b/commands/Makefile @@ -146,6 +146,7 @@ obj-$(CONFIG_CMD_MMC) += mmc.o obj-$(CONFIG_CMD_MMC_EXTCSD) += mmc_extcsd.o obj-$(CONFIG_CMD_NAND_BITFLIP) += nand-bitflip.o obj-$(CONFIG_CMD_SEED) += seed.o +obj-$(CONFIG_CMD_IP) += ip.o obj-$(CONFIG_CMD_IP_ROUTE_GET) += ip-route-get.o obj-$(CONFIG_CMD_BTHREAD) += bthread.o obj-$(CONFIG_CMD_UBSAN) += ubsan.o diff --git a/commands/ip.c b/commands/ip.c new file mode 100644 index 000000000000..35fc5f4d300f --- /dev/null +++ b/commands/ip.c @@ -0,0 +1,157 @@ +#include +#include +#include +#include +#include + +/* Function to calculate CIDR prefix from netmask */ +static int netmask_to_prefix(IPaddr_t netmask) +{ + int prefix = 0; + + while (netmask) { + prefix += netmask & 1; + netmask >>= 1; + } + + return prefix; +} + +/* Function to display network links (`ip l`) */ +static int do_ip_link(int argc, char *argv[]) +{ + struct eth_device *edev; + + for_each_netdev(edev) { + const char *phy_status = edev->phydev ? + (edev->phydev->link ? ",LOWER_UP" : ",NO-CARRIER") : ""; + + printf("%s: <%s%s>\n", + eth_name(edev), + edev->active ? "UP" : "DOWN", + phy_status); + + printf(" link/ether %pM brd ff:ff:ff:ff:ff:ff\n", + edev->ethaddr); + } + + return 0; +} + +/* Function to display network addresses (`ip a`) */ +static int do_ip_addr(int argc, char *argv[]) +{ + struct eth_device *edev; + + for_each_netdev(edev) { + IPaddr_t ipaddr = net_get_ip(edev); + int prefix_length = netmask_to_prefix(edev->netmask); + const char *phy_status = edev->phydev ? + (edev->phydev->link ? ",LOWER_UP" : ",NO-CARRIER") : ""; + + printf("%s: <%s%s>\n", eth_name(edev), + edev->active ? "UP" : "DOWN", phy_status); + + printf(" link/ether %pM brd ff:ff:ff:ff:ff:ff\n", + edev->ethaddr); + + if (ipaddr) { + printf(" inet %pI4/%d scope global src %pI4\n", + &ipaddr, prefix_length, &ipaddr); + } + } + + return 0; +} + +/* Function to display network routes (`ip r`) */ +static int do_ip_route(int argc, char *argv[]) +{ + const char *domainname = net_get_domainname(); + IPaddr_t nameserver = net_get_nameserver(); + const char *serverip = net_get_server(); + IPaddr_t gateway = net_get_gateway(); + struct eth_device *edev; + + for_each_netdev(edev) { + int prefix_length = netmask_to_prefix(edev->netmask); + IPaddr_t ipaddr = net_get_ip(edev); + const char *proto; + + /* Skip interfaces without an IP address */ + if (!ipaddr) + continue; + + /* Determine protocol: DHCP or Static */ + if (edev->global_mode == ETH_MODE_DHCP) + proto = "dhcp"; + else + proto = "static"; + + /* Show default gateway */ + if (gateway) { + printf("default via %pI4 dev %s proto %s src %pI4\n", + &gateway, eth_name(edev), proto, &ipaddr); + } + + /* Show per-interface network route */ + if (prefix_length > 0) { + printf("%pI4/%d dev %s proto kernel scope link src %pI4\n", + &ipaddr, prefix_length, eth_name(edev), + &ipaddr); + } + } + + /* Show boot server */ + if (serverip && *serverip) { + printf("serverip %s\n", serverip); + } + + /* Show DNS server */ + if (nameserver) { + printf("nameserver %pI4\n", &nameserver); + } + + /* Show search domain */ + if (domainname && *domainname) { + printf("search %s\n", domainname); + } + + return 0; +} + +/* Main IP command dispatcher */ +static int do_ip(int argc, char *argv[]) +{ + if (argc < 2) { + return do_ip_addr(argc, argv); /* Default: `ip a` */ + } + + if (!strcmp(argv[1], "l") || !strcmp(argv[1], "link")) + return do_ip_link(argc, argv); + else if (!strcmp(argv[1], "a") || !strcmp(argv[1], "addr")) + return do_ip_addr(argc, argv); + else if (!strcmp(argv[1], "r") || !strcmp(argv[1], "route")) + return do_ip_route(argc, argv); + + printf("Usage: ip [l|link] | [a|addr] | [r|route]\n"); + return 1; +} + +BAREBOX_CMD_HELP_START(ip) +BAREBOX_CMD_HELP_TEXT("Show network interfaces, addresses, and routes") +BAREBOX_CMD_HELP_TEXT("") +BAREBOX_CMD_HELP_TEXT("Options:") +BAREBOX_CMD_HELP_OPT("l, link", "Show only network links (interface state and MAC)") +BAREBOX_CMD_HELP_OPT("a, addr", "Show only network addresses (default behavior)") +BAREBOX_CMD_HELP_OPT("r, route", "Show routing information (default gateway, network routes, server IP, DNS)") +BAREBOX_CMD_HELP_END + +BAREBOX_CMD_START(ip) + .cmd = do_ip, + BAREBOX_CMD_DESC("Show network interfaces, addresses, and routes") + BAREBOX_CMD_OPTS("[l|link] | [a|addr] | [r|route]") + BAREBOX_CMD_GROUP(CMD_GRP_MISC) + BAREBOX_CMD_COMPLETE(empty_complete) + BAREBOX_CMD_HELP(cmd_ip_help) +BAREBOX_CMD_END -- 2.39.5