+/* vi: set sw=4 ts=4: */
/*
- * iplink.c "ip link".
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ * Patrick McHardy <kaber@trash.net>
*
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
#include <net/if.h>
-#include <net/if_packet.h>
+/*#include <net/if_packet.h> - not needed? */
#include <netpacket/packet.h>
+#include <netinet/if_ether.h>
-#if __GLIBC__ >=2 && __GLIBC_MINOR >= 1
-#include <net/ethernet.h>
-#else
-#include <linux/if_ether.h>
-#endif
-
+#include <linux/if_vlan.h>
+#include "ip_common.h" /* #include "libbb.h" is inside */
#include "rt_names.h"
#include "utils.h"
-#include "ip_common.h"
-
-#include "libbb.h"
+#undef ETH_P_8021AD
+#define ETH_P_8021AD 0x88A8
+#undef VLAN_FLAG_REORDER_HDR
+#define VLAN_FLAG_REORDER_HDR 0x1
+#undef VLAN_FLAG_GVRP
+#define VLAN_FLAG_GVRP 0x2
+#undef VLAN_FLAG_LOOSE_BINDING
+#define VLAN_FLAG_LOOSE_BINDING 0x4
+#undef VLAN_FLAG_MVRP
+#define VLAN_FLAG_MVRP 0x8
+#undef IFLA_VLAN_PROTOCOL
+#define IFLA_VLAN_PROTOCOL 5
+
+#ifndef IFLA_LINKINFO
+# define IFLA_LINKINFO 18
+# define IFLA_INFO_KIND 1
+# define IFLA_INFO_DATA 2
+#endif
-/* take from linux/sockios.h */
-#define SIOCSIFNAME 0x8923 /* set interface name */
+#ifndef IFLA_VLAN_MAX
+# define IFLA_VLAN_ID 1
+# define IFLA_VLAN_FLAGS 2
+struct ifla_vlan_flags {
+ uint32_t flags;
+ uint32_t mask;
+};
+#endif
-static int do_link;
+/* taken from linux/sockios.h */
+#define SIOCSIFNAME 0x8923 /* set interface name */
-static int on_off(char *msg)
-{
- error_msg("Error: argument of \"%s\" must be \"on\" or \"off\"", msg);
- return -1;
-}
+#if 0
+# define dbg(...) bb_error_msg(__VA_ARGS__)
+#else
+# define dbg(...) ((void)0)
+#endif
+/* Exits on error */
static int get_ctl_fd(void)
{
- int s_errno;
int fd;
fd = socket(PF_INET, SOCK_DGRAM, 0);
if (fd >= 0)
return fd;
- s_errno = errno;
fd = socket(PF_PACKET, SOCK_DGRAM, 0);
if (fd >= 0)
return fd;
- fd = socket(PF_INET6, SOCK_DGRAM, 0);
- if (fd >= 0)
- return fd;
- errno = s_errno;
- perror("Cannot create control socket");
- return -1;
+ return xsocket(PF_INET6, SOCK_DGRAM, 0);
}
-static int do_chflags(char *dev, __u32 flags, __u32 mask)
+/* Exits on error */
+static void do_chflags(char *dev, uint32_t flags, uint32_t mask)
{
struct ifreq ifr;
int fd;
- int err;
- strcpy(ifr.ifr_name, dev);
+ strncpy_IFNAMSIZ(ifr.ifr_name, dev);
fd = get_ctl_fd();
- if (fd < 0)
- return -1;
- err = ioctl(fd, SIOCGIFFLAGS, &ifr);
- if (err) {
- perror("SIOCGIFFLAGS");
- close(fd);
- return -1;
- }
- if ((ifr.ifr_flags^flags)&mask) {
+ xioctl(fd, SIOCGIFFLAGS, &ifr);
+ if ((ifr.ifr_flags ^ flags) & mask) {
ifr.ifr_flags &= ~mask;
- ifr.ifr_flags |= mask&flags;
- err = ioctl(fd, SIOCSIFFLAGS, &ifr);
- if (err)
- perror("SIOCSIFFLAGS");
+ ifr.ifr_flags |= mask & flags;
+ xioctl(fd, SIOCSIFFLAGS, &ifr);
}
close(fd);
- return err;
}
-static int do_changename(char *dev, char *newdev)
+/* Exits on error */
+static void do_changename(char *dev, char *newdev)
{
struct ifreq ifr;
int fd;
- int err;
- strcpy(ifr.ifr_name, dev);
- strcpy(ifr.ifr_newname, newdev);
+ strncpy_IFNAMSIZ(ifr.ifr_name, dev);
+ strncpy_IFNAMSIZ(ifr.ifr_newname, newdev);
fd = get_ctl_fd();
- if (fd < 0)
- return -1;
- err = ioctl(fd, SIOCSIFNAME, &ifr);
- if (err) {
- perror("SIOCSIFNAME");
- close(fd);
- return -1;
- }
+ xioctl(fd, SIOCSIFNAME, &ifr);
close(fd);
- return err;
}
-static int set_qlen(char *dev, int qlen)
+/* Exits on error */
+static void set_qlen(char *dev, int qlen)
{
struct ifreq ifr;
int s;
s = get_ctl_fd();
- if (s < 0)
- return -1;
-
memset(&ifr, 0, sizeof(ifr));
- strcpy(ifr.ifr_name, dev);
- ifr.ifr_qlen = qlen;
- if (ioctl(s, SIOCSIFTXQLEN, &ifr) < 0) {
- perror("SIOCSIFXQLEN");
- close(s);
- return -1;
- }
+ strncpy_IFNAMSIZ(ifr.ifr_name, dev);
+ ifr.ifr_qlen = qlen;
+ xioctl(s, SIOCSIFTXQLEN, &ifr);
close(s);
-
- return 0;
}
-static int set_mtu(char *dev, int mtu)
+/* Exits on error */
+static void set_mtu(char *dev, int mtu)
{
struct ifreq ifr;
int s;
s = get_ctl_fd();
- if (s < 0)
- return -1;
-
memset(&ifr, 0, sizeof(ifr));
- strcpy(ifr.ifr_name, dev);
- ifr.ifr_mtu = mtu;
- if (ioctl(s, SIOCSIFMTU, &ifr) < 0) {
- perror("SIOCSIFMTU");
- close(s);
- return -1;
- }
+ strncpy_IFNAMSIZ(ifr.ifr_name, dev);
+ ifr.ifr_mtu = mtu;
+ xioctl(s, SIOCSIFMTU, &ifr);
close(s);
-
- return 0;
}
+/* Exits on error */
static int get_address(char *dev, int *htype)
{
struct ifreq ifr;
struct sockaddr_ll me;
- int alen;
+ socklen_t alen;
int s;
- s = socket(PF_PACKET, SOCK_DGRAM, 0);
- if (s < 0) {
- perror("socket(PF_PACKET)");
- return -1;
- }
+ s = xsocket(PF_PACKET, SOCK_DGRAM, 0);
memset(&ifr, 0, sizeof(ifr));
- strcpy(ifr.ifr_name, dev);
- if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) {
- perror("SIOCGIFINDEX");
- close(s);
- return -1;
- }
+ strncpy_IFNAMSIZ(ifr.ifr_name, dev);
+ xioctl(s, SIOCGIFINDEX, &ifr);
memset(&me, 0, sizeof(me));
me.sll_family = AF_PACKET;
me.sll_ifindex = ifr.ifr_ifindex;
me.sll_protocol = htons(ETH_P_LOOP);
- if (bind(s, (struct sockaddr*)&me, sizeof(me)) == -1) {
- perror("bind");
- close(s);
- return -1;
- }
-
+ xbind(s, (struct sockaddr*)&me, sizeof(me));
alen = sizeof(me);
- if (getsockname(s, (struct sockaddr*)&me, &alen) == -1) {
- perror("getsockname");
- close(s);
- return -1;
- }
+ getsockname(s, (struct sockaddr*)&me, &alen);
+ //never happens:
+ //if (getsockname(s, (struct sockaddr*)&me, &alen) == -1)
+ // bb_perror_msg_and_die("getsockname");
close(s);
*htype = me.sll_hatype;
return me.sll_halen;
}
-static int parse_address(char *dev, int hatype, int halen, char *lla, struct ifreq *ifr)
+/* Exits on error */
+static void parse_address(char *dev, int hatype, int halen, char *lla, struct ifreq *ifr)
{
int alen;
memset(ifr, 0, sizeof(*ifr));
- strcpy(ifr->ifr_name, dev);
+ strncpy_IFNAMSIZ(ifr->ifr_name, dev);
ifr->ifr_hwaddr.sa_family = hatype;
- alen = ll_addr_a2n(ifr->ifr_hwaddr.sa_data, 14, lla);
+
+ alen = hatype == 1/*ARPHRD_ETHER*/ ? 14/*ETH_HLEN*/ : 19/*INFINIBAND_HLEN*/;
+ alen = ll_addr_a2n((unsigned char *)(ifr->ifr_hwaddr.sa_data), alen, lla);
if (alen < 0)
- return -1;
+ exit(EXIT_FAILURE);
if (alen != halen) {
- error_msg("Wrong address (%s) length: expected %d bytes", lla, halen);
- return -1;
+ bb_error_msg_and_die("wrong address (%s) length: expected %d bytes", lla, halen);
}
- return 0;
}
-static int set_address(struct ifreq *ifr, int brd)
+/* Exits on error */
+static void set_address(struct ifreq *ifr, int brd)
{
int s;
s = get_ctl_fd();
- if (s < 0)
- return -1;
- if (ioctl(s, brd?SIOCSIFHWBROADCAST:SIOCSIFHWADDR, ifr) < 0) {
- perror(brd?"SIOCSIFHWBROADCAST":"SIOCSIFHWADDR");
- close(s);
- return -1;
- }
+ if (brd)
+ xioctl(s, SIOCSIFHWBROADCAST, ifr);
+ else
+ xioctl(s, SIOCSIFHWADDR, ifr);
close(s);
- return 0;
}
-static int do_set(int argc, char **argv)
+static void die_must_be_on_off(const char *msg) NORETURN;
+static void die_must_be_on_off(const char *msg)
+{
+ bb_error_msg_and_die("argument of \"%s\" must be \"on\" or \"off\"", msg);
+}
+
+/* Return value becomes exitcode. It's okay to not return at all */
+static int do_set(char **argv)
{
char *dev = NULL;
- __u32 mask = 0;
- __u32 flags = 0;
+ uint32_t mask = 0;
+ uint32_t flags = 0;
int qlen = -1;
int mtu = -1;
char *newaddr = NULL;
struct ifreq ifr0, ifr1;
char *newname = NULL;
int htype, halen;
-
- while (argc > 0) {
- if (strcmp(*argv, "up") == 0) {
+ static const char keywords[] ALIGN1 =
+ "up\0""down\0""name\0""mtu\0""qlen\0""multicast\0"
+ "arp\0""address\0""dev\0";
+ enum { ARG_up = 0, ARG_down, ARG_name, ARG_mtu, ARG_qlen, ARG_multicast,
+ ARG_arp, ARG_addr, ARG_dev };
+ static const char str_on_off[] ALIGN1 = "on\0""off\0";
+ enum { PARM_on = 0, PARM_off };
+ smalluint key;
+
+ while (*argv) {
+ /* substring search ensures that e.g. "addr" and "address"
+ * are both accepted */
+ key = index_in_substrings(keywords, *argv);
+ if (key == ARG_up) {
mask |= IFF_UP;
flags |= IFF_UP;
- } else if (strcmp(*argv, "down") == 0) {
+ } else if (key == ARG_down) {
mask |= IFF_UP;
flags &= ~IFF_UP;
- } else if (strcmp(*argv, "name") == 0) {
+ } else if (key == ARG_name) {
NEXT_ARG();
newname = *argv;
- } else if (strcmp(*argv, "mtu") == 0) {
+ } else if (key == ARG_mtu) {
NEXT_ARG();
if (mtu != -1)
duparg("mtu", *argv);
- if (get_integer(&mtu, *argv, 0))
- invarg("Invalid \"mtu\" value\n", *argv);
- } else if (strcmp(*argv, "multicast") == 0) {
+ mtu = get_unsigned(*argv, "mtu");
+ } else if (key == ARG_qlen) {
NEXT_ARG();
- mask |= IFF_MULTICAST;
- if (strcmp(*argv, "on") == 0) {
- flags |= IFF_MULTICAST;
- } else if (strcmp(*argv, "off") == 0) {
- flags &= ~IFF_MULTICAST;
- } else
- return on_off("multicast");
- } else if (strcmp(*argv, "arp") == 0) {
+ if (qlen != -1)
+ duparg("qlen", *argv);
+ qlen = get_unsigned(*argv, "qlen");
+ } else if (key == ARG_addr) {
NEXT_ARG();
- mask |= IFF_NOARP;
- if (strcmp(*argv, "on") == 0) {
- flags &= ~IFF_NOARP;
- } else if (strcmp(*argv, "off") == 0) {
- flags |= IFF_NOARP;
- } else
- return on_off("noarp");
- } else {
- if (strcmp(*argv, "dev") == 0) {
+ newaddr = *argv;
+ } else if (key >= ARG_dev) {
+ if (key == ARG_dev) {
NEXT_ARG();
}
if (dev)
duparg2("dev", *argv);
dev = *argv;
+ } else {
+ int param;
+ NEXT_ARG();
+ param = index_in_strings(str_on_off, *argv);
+ if (key == ARG_multicast) {
+ if (param < 0)
+ die_must_be_on_off("multicast");
+ mask |= IFF_MULTICAST;
+ if (param == PARM_on)
+ flags |= IFF_MULTICAST;
+ else
+ flags &= ~IFF_MULTICAST;
+ } else if (key == ARG_arp) {
+ if (param < 0)
+ die_must_be_on_off("arp");
+ mask |= IFF_NOARP;
+ if (param == PARM_on)
+ flags &= ~IFF_NOARP;
+ else
+ flags |= IFF_NOARP;
+ }
}
- argc--; argv++;
+ argv++;
}
if (!dev) {
- error_msg("Not enough of information: \"dev\" argument is required.");
- exit(-1);
+ bb_error_msg_and_die(bb_msg_requires_arg, "\"dev\"");
}
if (newaddr || newbrd) {
halen = get_address(dev, &htype);
- if (halen < 0)
- return -1;
if (newaddr) {
- if (parse_address(dev, htype, halen, newaddr, &ifr0) < 0)
- return -1;
+ parse_address(dev, htype, halen, newaddr, &ifr0);
+ set_address(&ifr0, 0);
}
if (newbrd) {
- if (parse_address(dev, htype, halen, newbrd, &ifr1) < 0)
- return -1;
+ parse_address(dev, htype, halen, newbrd, &ifr1);
+ set_address(&ifr1, 1);
}
}
if (newname && strcmp(dev, newname)) {
- if (do_changename(dev, newname) < 0)
- return -1;
+ do_changename(dev, newname);
dev = newname;
}
- if (qlen != -1) {
- if (set_qlen(dev, qlen) < 0)
- return -1;
+ if (qlen != -1) {
+ set_qlen(dev, qlen);
}
- if (mtu != -1) {
- if (set_mtu(dev, mtu) < 0)
- return -1;
- }
- if (newaddr || newbrd) {
- if (newbrd) {
- if (set_address(&ifr1, 1) < 0)
- return -1;
- }
- if (newaddr) {
- if (set_address(&ifr0, 0) < 0)
- return -1;
- }
+ if (mtu != -1) {
+ set_mtu(dev, mtu);
}
if (mask)
- return do_chflags(dev, flags, mask);
+ do_chflags(dev, flags, mask);
return 0;
}
-static int ipaddr_list_link(int argc, char **argv)
+static int ipaddr_list_link(char **argv)
{
preferred_family = AF_PACKET;
- do_link = 1;
- return ipaddr_list_or_flush(argc, argv, 0);
+ return ipaddr_list_or_flush(argv, 0);
+}
+
+static void vlan_parse_opt(char **argv, struct nlmsghdr *n, unsigned int size)
+{
+ static const char keywords[] ALIGN1 =
+ "id\0"
+ "protocol\0"
+ "reorder_hdr\0"
+ "gvrp\0"
+ "mvrp\0"
+ "loose_binding\0"
+ ;
+ static const char protocols[] ALIGN1 =
+ "802.1q\0"
+ "802.1ad\0"
+ ;
+ static const char str_on_off[] ALIGN1 =
+ "on\0"
+ "off\0"
+ ;
+ enum {
+ ARG_id = 0,
+ ARG_reorder_hdr,
+ ARG_gvrp,
+ ARG_mvrp,
+ ARG_loose_binding,
+ ARG_protocol,
+ };
+ enum {
+ PROTO_8021Q = 0,
+ PROTO_8021AD,
+ };
+ enum {
+ PARM_on = 0,
+ PARM_off
+ };
+ int arg;
+ uint16_t id, proto;
+ struct ifla_vlan_flags flags = {};
+
+ while (*argv) {
+ arg = index_in_substrings(keywords, *argv);
+ if (arg < 0)
+ invarg_1_to_2(*argv, "type vlan");
+
+ NEXT_ARG();
+ if (arg == ARG_id) {
+ id = get_u16(*argv, "id");
+ addattr_l(n, size, IFLA_VLAN_ID, &id, sizeof(id));
+ } else if (arg == ARG_protocol) {
+ arg = index_in_substrings(protocols, *argv);
+ if (arg == PROTO_8021Q)
+ proto = ETH_P_8021Q;
+ else if (arg == PROTO_8021AD)
+ proto = ETH_P_8021AD;
+ else
+ bb_error_msg_and_die("unknown VLAN encapsulation protocol '%s'",
+ *argv);
+ addattr_l(n, size, IFLA_VLAN_PROTOCOL, &proto, sizeof(proto));
+ } else {
+ int param = index_in_strings(str_on_off, *argv);
+ if (param < 0)
+ die_must_be_on_off(nth_string(keywords, arg));
+
+ if (arg == ARG_reorder_hdr) {
+ flags.mask |= VLAN_FLAG_REORDER_HDR;
+ flags.flags &= ~VLAN_FLAG_REORDER_HDR;
+ if (param == PARM_on)
+ flags.flags |= VLAN_FLAG_REORDER_HDR;
+ } else if (arg == ARG_gvrp) {
+ flags.mask |= VLAN_FLAG_GVRP;
+ flags.flags &= ~VLAN_FLAG_GVRP;
+ if (param == PARM_on)
+ flags.flags |= VLAN_FLAG_GVRP;
+ } else if (arg == ARG_mvrp) {
+ flags.mask |= VLAN_FLAG_MVRP;
+ flags.flags &= ~VLAN_FLAG_MVRP;
+ if (param == PARM_on)
+ flags.flags |= VLAN_FLAG_MVRP;
+ } else { /*if (arg == ARG_loose_binding) */
+ flags.mask |= VLAN_FLAG_LOOSE_BINDING;
+ flags.flags &= ~VLAN_FLAG_LOOSE_BINDING;
+ if (param == PARM_on)
+ flags.flags |= VLAN_FLAG_LOOSE_BINDING;
+ }
+ }
+ argv++;
+ }
+
+ if (flags.mask)
+ addattr_l(n, size, IFLA_VLAN_FLAGS, &flags, sizeof(flags));
+}
+
+#ifndef NLMSG_TAIL
+#define NLMSG_TAIL(nmsg) \
+ ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
+#endif
+/* Return value becomes exitcode. It's okay to not return at all */
+static int do_add_or_delete(char **argv, const unsigned rtm)
+{
+ static const char keywords[] ALIGN1 =
+ "link\0""name\0""type\0""dev\0""address\0";
+ enum {
+ ARG_link,
+ ARG_name,
+ ARG_type,
+ ARG_dev,
+ ARG_address,
+ };
+ struct rtnl_handle rth;
+ struct {
+ struct nlmsghdr n;
+ struct ifinfomsg i;
+ char buf[1024];
+ } req;
+ smalluint arg;
+ char *name_str = NULL;
+ char *link_str = NULL;
+ char *type_str = NULL;
+ char *dev_str = NULL;
+ char *address_str = NULL;
+
+ memset(&req, 0, sizeof(req));
+
+ req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
+ req.n.nlmsg_flags = NLM_F_REQUEST;
+ req.n.nlmsg_type = rtm;
+ req.i.ifi_family = preferred_family;
+ if (rtm == RTM_NEWLINK)
+ req.n.nlmsg_flags |= NLM_F_CREATE|NLM_F_EXCL;
+
+ while (*argv) {
+ arg = index_in_substrings(keywords, *argv);
+ if (arg == ARG_type) {
+ NEXT_ARG();
+ type_str = *argv++;
+ dbg("type_str:'%s'", type_str);
+ break;
+ }
+ if (arg == ARG_link) {
+ NEXT_ARG();
+ link_str = *argv;
+ dbg("link_str:'%s'", link_str);
+ } else if (arg == ARG_name) {
+ NEXT_ARG();
+ name_str = *argv;
+ dbg("name_str:'%s'", name_str);
+ } else if (arg == ARG_address) {
+ NEXT_ARG();
+ address_str = *argv;
+ dbg("address_str:'%s'", name_str);
+ } else {
+ if (arg == ARG_dev) {
+ if (dev_str)
+ duparg(*argv, "dev");
+ NEXT_ARG();
+ }
+ dev_str = *argv;
+ dbg("dev_str:'%s'", dev_str);
+ }
+ argv++;
+ }
+ xrtnl_open(&rth);
+ ll_init_map(&rth);
+ if (type_str) {
+ struct rtattr *linkinfo = NLMSG_TAIL(&req.n);
+
+ addattr_l(&req.n, sizeof(req), IFLA_LINKINFO, NULL, 0);
+ addattr_l(&req.n, sizeof(req), IFLA_INFO_KIND, type_str,
+ strlen(type_str));
+
+ if (*argv) {
+ struct rtattr *data = NLMSG_TAIL(&req.n);
+ addattr_l(&req.n, sizeof(req), IFLA_INFO_DATA, NULL, 0);
+
+ if (strcmp(type_str, "vlan") == 0)
+ vlan_parse_opt(argv, &req.n, sizeof(req));
+
+ data->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)data;
+ }
+
+ linkinfo->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)linkinfo;
+ }
+ if (rtm != RTM_NEWLINK) {
+ if (!dev_str)
+ return 1; /* Need a device to delete */
+ req.i.ifi_index = xll_name_to_index(dev_str);
+ } else {
+ if (!name_str)
+ name_str = dev_str;
+ if (link_str) {
+ int idx = xll_name_to_index(link_str);
+ addattr_l(&req.n, sizeof(req), IFLA_LINK, &idx, 4);
+ }
+ if (address_str) {
+ unsigned char abuf[32];
+ int len = ll_addr_a2n(abuf, sizeof(abuf), address_str);
+ dbg("address len:%d", len);
+ if (len < 0)
+ return -1;
+ addattr_l(&req.n, sizeof(req), IFLA_ADDRESS, abuf, len);
+ }
+ }
+ if (name_str) {
+ const size_t name_len = strlen(name_str) + 1;
+ if (name_len < 2 || name_len > IFNAMSIZ)
+ invarg_1_to_2(name_str, "name");
+ addattr_l(&req.n, sizeof(req), IFLA_IFNAME, name_str, name_len);
+ }
+ if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
+ return 2;
+ return 0;
}
-int do_iplink(int argc, char **argv)
+/* Other keywords recognized by iproute2-3.12.0: */
+#if 0
+ } else if (matches(*argv, "broadcast") == 0 ||
+ strcmp(*argv, "brd") == 0) {
+ NEXT_ARG();
+ len = ll_addr_a2n(abuf, sizeof(abuf), *argv);
+ if (len < 0)
+ return -1;
+ addattr_l(&req->n, sizeof(*req), IFLA_BROADCAST, abuf, len);
+ } else if (matches(*argv, "txqueuelen") == 0 ||
+ strcmp(*argv, "qlen") == 0 ||
+ matches(*argv, "txqlen") == 0) {
+ NEXT_ARG();
+ if (qlen != -1)
+ duparg("txqueuelen", *argv);
+ if (get_integer(&qlen, *argv, 0))
+ invarg_1_to_2(*argv, "txqueuelen");
+ addattr_l(&req->n, sizeof(*req), IFLA_TXQLEN, &qlen, 4);
+ } else if (strcmp(*argv, "mtu") == 0) {
+ NEXT_ARG();
+ if (mtu != -1)
+ duparg("mtu", *argv);
+ if (get_integer(&mtu, *argv, 0))
+ invarg_1_to_2(*argv, "mtu");
+ addattr_l(&req->n, sizeof(*req), IFLA_MTU, &mtu, 4);
+ } else if (strcmp(*argv, "netns") == 0) {
+ NEXT_ARG();
+ if (netns != -1)
+ duparg("netns", *argv);
+ if ((netns = get_netns_fd(*argv)) >= 0)
+ addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_FD, &netns, 4);
+ else if (get_integer(&netns, *argv, 0) == 0)
+ addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_PID, &netns, 4);
+ else
+ invarg_1_to_2(*argv, "netns");
+ } else if (strcmp(*argv, "multicast") == 0) {
+ NEXT_ARG();
+ req->i.ifi_change |= IFF_MULTICAST;
+ if (strcmp(*argv, "on") == 0) {
+ req->i.ifi_flags |= IFF_MULTICAST;
+ } else if (strcmp(*argv, "off") == 0) {
+ req->i.ifi_flags &= ~IFF_MULTICAST;
+ } else
+ return on_off("multicast", *argv);
+ } else if (strcmp(*argv, "allmulticast") == 0) {
+ NEXT_ARG();
+ req->i.ifi_change |= IFF_ALLMULTI;
+ if (strcmp(*argv, "on") == 0) {
+ req->i.ifi_flags |= IFF_ALLMULTI;
+ } else if (strcmp(*argv, "off") == 0) {
+ req->i.ifi_flags &= ~IFF_ALLMULTI;
+ } else
+ return on_off("allmulticast", *argv);
+ } else if (strcmp(*argv, "promisc") == 0) {
+ NEXT_ARG();
+ req->i.ifi_change |= IFF_PROMISC;
+ if (strcmp(*argv, "on") == 0) {
+ req->i.ifi_flags |= IFF_PROMISC;
+ } else if (strcmp(*argv, "off") == 0) {
+ req->i.ifi_flags &= ~IFF_PROMISC;
+ } else
+ return on_off("promisc", *argv);
+ } else if (strcmp(*argv, "trailers") == 0) {
+ NEXT_ARG();
+ req->i.ifi_change |= IFF_NOTRAILERS;
+ if (strcmp(*argv, "off") == 0) {
+ req->i.ifi_flags |= IFF_NOTRAILERS;
+ } else if (strcmp(*argv, "on") == 0) {
+ req->i.ifi_flags &= ~IFF_NOTRAILERS;
+ } else
+ return on_off("trailers", *argv);
+ } else if (strcmp(*argv, "arp") == 0) {
+ NEXT_ARG();
+ req->i.ifi_change |= IFF_NOARP;
+ if (strcmp(*argv, "on") == 0) {
+ req->i.ifi_flags &= ~IFF_NOARP;
+ } else if (strcmp(*argv, "off") == 0) {
+ req->i.ifi_flags |= IFF_NOARP;
+ } else
+ return on_off("noarp", *argv);
+ } else if (strcmp(*argv, "vf") == 0) {
+ struct rtattr *vflist;
+ NEXT_ARG();
+ if (get_integer(&vf, *argv, 0)) {
+ invarg_1_to_2(*argv, "vf");
+ }
+ vflist = addattr_nest(&req->n, sizeof(*req),
+ IFLA_VFINFO_LIST);
+ len = iplink_parse_vf(vf, &argc, &argv, req);
+ if (len < 0)
+ return -1;
+ addattr_nest_end(&req->n, vflist);
+ } else if (matches(*argv, "master") == 0) {
+ int ifindex;
+ NEXT_ARG();
+ ifindex = ll_name_to_index(*argv);
+ if (!ifindex)
+ invarg_1_to_2(*argv, "master");
+ addattr_l(&req->n, sizeof(*req), IFLA_MASTER,
+ &ifindex, 4);
+ } else if (matches(*argv, "nomaster") == 0) {
+ int ifindex = 0;
+ addattr_l(&req->n, sizeof(*req), IFLA_MASTER,
+ &ifindex, 4);
+ } else if (matches(*argv, "dynamic") == 0) {
+ NEXT_ARG();
+ req->i.ifi_change |= IFF_DYNAMIC;
+ if (strcmp(*argv, "on") == 0) {
+ req->i.ifi_flags |= IFF_DYNAMIC;
+ } else if (strcmp(*argv, "off") == 0) {
+ req->i.ifi_flags &= ~IFF_DYNAMIC;
+ } else
+ return on_off("dynamic", *argv);
+ } else if (matches(*argv, "alias") == 0) {
+ NEXT_ARG();
+ addattr_l(&req->n, sizeof(*req), IFLA_IFALIAS,
+ *argv, strlen(*argv));
+ argc--; argv++;
+ break;
+ } else if (strcmp(*argv, "group") == 0) {
+ NEXT_ARG();
+ if (*group != -1)
+ duparg("group", *argv);
+ if (rtnl_group_a2n(group, *argv))
+ invarg_1_to_2(*argv, "group");
+ } else if (strcmp(*argv, "mode") == 0) {
+ int mode;
+ NEXT_ARG();
+ mode = get_link_mode(*argv);
+ if (mode < 0)
+ invarg_1_to_2(*argv, "mode");
+ addattr8(&req->n, sizeof(*req), IFLA_LINKMODE, mode);
+ } else if (strcmp(*argv, "state") == 0) {
+ int state;
+ NEXT_ARG();
+ state = get_operstate(*argv);
+ if (state < 0)
+ invarg_1_to_2(*argv, "state");
+ addattr8(&req->n, sizeof(*req), IFLA_OPERSTATE, state);
+ } else if (matches(*argv, "numtxqueues") == 0) {
+ NEXT_ARG();
+ if (numtxqueues != -1)
+ duparg("numtxqueues", *argv);
+ if (get_integer(&numtxqueues, *argv, 0))
+ invarg_1_to_2(*argv, "numtxqueues");
+ addattr_l(&req->n, sizeof(*req), IFLA_NUM_TX_QUEUES,
+ &numtxqueues, 4);
+ } else if (matches(*argv, "numrxqueues") == 0) {
+ NEXT_ARG();
+ if (numrxqueues != -1)
+ duparg("numrxqueues", *argv);
+ if (get_integer(&numrxqueues, *argv, 0))
+ invarg_1_to_2(*argv, "numrxqueues");
+ addattr_l(&req->n, sizeof(*req), IFLA_NUM_RX_QUEUES,
+ &numrxqueues, 4);
+ }
+#endif
+
+/* Return value becomes exitcode. It's okay to not return at all */
+int FAST_FUNC do_iplink(char **argv)
{
- if (argc > 0) {
- if (matches(*argv, "set") == 0)
- return do_set(argc-1, argv+1);
- if (matches(*argv, "show") == 0 ||
- matches(*argv, "lst") == 0 ||
- matches(*argv, "list") == 0)
- return ipaddr_list_link(argc-1, argv+1);
- } else
- return ipaddr_list_link(0, NULL);
-
- error_msg("Command \"%s\" is unknown, try \"ip link help\".", *argv);
- exit(-1);
+ static const char keywords[] ALIGN1 =
+ "add\0""delete\0""set\0""show\0""lst\0""list\0";
+ if (*argv) {
+ int key = index_in_substrings(keywords, *argv);
+ if (key < 0) /* invalid argument */
+ invarg_1_to_2(*argv, applet_name);
+ argv++;
+ if (key <= 1) /* add/delete */
+ return do_add_or_delete(argv, key ? RTM_DELLINK : RTM_NEWLINK);
+ if (key == 2) /* set */
+ return do_set(argv);
+ }
+ /* show, lst, list */
+ return ipaddr_list_link(argv);
}
projects / oweals / busybox.git / blobdiff