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mirror_iproute2/ip/ipaddress.c

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/*
* ipaddress.c "ip address".
*
* 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>
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <syslog.h>
#include <inttypes.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <fnmatch.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/sockios.h>
#include "rt_names.h"
#include "utils.h"
#include "ll_map.h"
#include "ip_common.h"
enum {
IPADD_LIST,
IPADD_FLUSH,
IPADD_SAVE,
};
static struct
{
int ifindex;
int family;
int oneline;
int showqueue;
inet_prefix pfx;
int scope, scopemask;
int flags, flagmask;
int up;
char *label;
int flushed;
char *flushb;
int flushp;
int flushe;
int group;
} filter;
static int do_link;
static void usage(void) __attribute__((noreturn));
static void usage(void)
{
if (do_link) {
iplink_usage();
}
fprintf(stderr, "Usage: ip addr {add|change|replace} IFADDR dev STRING [ LIFETIME ]\n");
fprintf(stderr, " [ CONFFLAG-LIST ]\n");
fprintf(stderr, " ip addr del IFADDR dev STRING [mngtmpaddr]\n");
fprintf(stderr, " ip addr {show|save|flush} [ dev STRING ] [ scope SCOPE-ID ]\n");
fprintf(stderr, " [ to PREFIX ] [ FLAG-LIST ] [ label PATTERN ] [up]\n");
fprintf(stderr, " ip addr {showdump|restore}\n");
fprintf(stderr, "IFADDR := PREFIX | ADDR peer PREFIX\n");
fprintf(stderr, " [ broadcast ADDR ] [ anycast ADDR ]\n");
fprintf(stderr, " [ label STRING ] [ scope SCOPE-ID ]\n");
fprintf(stderr, "SCOPE-ID := [ host | link | global | NUMBER ]\n");
fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
fprintf(stderr, "FLAG := [ permanent | dynamic | secondary | primary |\n");
fprintf(stderr, " tentative | deprecated | dadfailed | temporary |\n");
fprintf(stderr, " CONFFLAG-LIST ]\n");
fprintf(stderr, "CONFFLAG-LIST := [ CONFFLAG-LIST ] CONFFLAG\n");
fprintf(stderr, "CONFFLAG := [ home | nodad | mngtmpaddr | noprefixroute ]\n");
fprintf(stderr, "LIFETIME := [ valid_lft LFT ] [ preferred_lft LFT ]\n");
fprintf(stderr, "LFT := forever | SECONDS\n");
exit(-1);
}
static void print_link_flags(FILE *fp, unsigned flags, unsigned mdown)
{
fprintf(fp, "<");
if (flags & IFF_UP && !(flags & IFF_RUNNING))
fprintf(fp, "NO-CARRIER%s", flags ? "," : "");
flags &= ~IFF_RUNNING;
#define _PF(f) if (flags&IFF_##f) { \
flags &= ~IFF_##f ; \
fprintf(fp, #f "%s", flags ? "," : ""); }
_PF(LOOPBACK);
_PF(BROADCAST);
_PF(POINTOPOINT);
_PF(MULTICAST);
_PF(NOARP);
_PF(ALLMULTI);
_PF(PROMISC);
_PF(MASTER);
_PF(SLAVE);
_PF(DEBUG);
_PF(DYNAMIC);
_PF(AUTOMEDIA);
_PF(PORTSEL);
_PF(NOTRAILERS);
_PF(UP);
_PF(LOWER_UP);
_PF(DORMANT);
_PF(ECHO);
#undef _PF
if (flags)
fprintf(fp, "%x", flags);
if (mdown)
fprintf(fp, ",M-DOWN");
fprintf(fp, "> ");
}
static const char *oper_states[] = {
"UNKNOWN", "NOTPRESENT", "DOWN", "LOWERLAYERDOWN",
"TESTING", "DORMANT", "UP"
};
static void print_operstate(FILE *f, __u8 state)
{
if (state >= sizeof(oper_states)/sizeof(oper_states[0]))
fprintf(f, "state %#x ", state);
else
fprintf(f, "state %s ", oper_states[state]);
}
int get_operstate(const char *name)
{
int i;
for (i = 0; i < sizeof(oper_states)/sizeof(oper_states[0]); i++)
if (strcasecmp(name, oper_states[i]) == 0)
return i;
return -1;
}
static void print_queuelen(FILE *f, struct rtattr *tb[IFLA_MAX + 1])
{
int qlen;
if (tb[IFLA_TXQLEN])
qlen = *(int *)RTA_DATA(tb[IFLA_TXQLEN]);
else {
struct ifreq ifr;
int s = socket(AF_INET, SOCK_STREAM, 0);
if (s < 0)
return;
memset(&ifr, 0, sizeof(ifr));
strcpy(ifr.ifr_name, rta_getattr_str(tb[IFLA_IFNAME]));
if (ioctl(s, SIOCGIFTXQLEN, &ifr) < 0) {
fprintf(f, "ioctl(SIOCGIFTXQLEN) failed: %s\n", strerror(errno));
close(s);
return;
}
close(s);
qlen = ifr.ifr_qlen;
}
if (qlen)
fprintf(f, "qlen %d", qlen);
}
static const char *link_modes[] = {
"DEFAULT", "DORMANT"
};
static void print_linkmode(FILE *f, struct rtattr *tb)
{
unsigned int mode = rta_getattr_u8(tb);
if (mode >= sizeof(link_modes) / sizeof(link_modes[0]))
fprintf(f, "mode %d ", mode);
else
fprintf(f, "mode %s ", link_modes[mode]);
}
static void print_linktype(FILE *fp, struct rtattr *tb)
{
struct rtattr *linkinfo[IFLA_INFO_MAX+1];
struct link_util *lu;
struct link_util *slave_lu;
char *kind;
char *slave_kind;
parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb);
if (linkinfo[IFLA_INFO_KIND]) {
kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]);
fprintf(fp, "%s", _SL_);
fprintf(fp, " %s ", kind);
lu = get_link_kind(kind);
if (lu && lu->print_opt) {
struct rtattr *attr[lu->maxattr+1], **data = NULL;
if (linkinfo[IFLA_INFO_DATA]) {
parse_rtattr_nested(attr, lu->maxattr,
linkinfo[IFLA_INFO_DATA]);
data = attr;
}
lu->print_opt(lu, fp, data);
if (linkinfo[IFLA_INFO_XSTATS] && show_stats &&
lu->print_xstats)
lu->print_xstats(lu, fp, linkinfo[IFLA_INFO_XSTATS]);
}
}
if (linkinfo[IFLA_INFO_SLAVE_KIND]) {
slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]);
fprintf(fp, "%s", _SL_);
fprintf(fp, " %s_slave ", slave_kind);
slave_lu = get_link_slave_kind(slave_kind);
if (slave_lu && slave_lu->print_opt) {
struct rtattr *attr[slave_lu->maxattr+1], **data = NULL;
if (linkinfo[IFLA_INFO_SLAVE_DATA]) {
parse_rtattr_nested(attr, slave_lu->maxattr,
linkinfo[IFLA_INFO_SLAVE_DATA]);
data = attr;
}
slave_lu->print_opt(slave_lu, fp, data);
}
}
}
static void print_vfinfo(FILE *fp, struct rtattr *vfinfo)
{
struct ifla_vf_mac *vf_mac;
struct ifla_vf_vlan *vf_vlan;
struct ifla_vf_rate *vf_rate;
struct ifla_vf_tx_rate *vf_tx_rate;
struct ifla_vf_spoofchk *vf_spoofchk;
struct ifla_vf_link_state *vf_linkstate;
struct rtattr *vf[IFLA_VF_MAX+1];
struct rtattr *tmp;
SPRINT_BUF(b1);
if (vfinfo->rta_type != IFLA_VF_INFO) {
fprintf(stderr, "BUG: rta type is %d\n", vfinfo->rta_type);
return;
}
parse_rtattr_nested(vf, IFLA_VF_MAX, vfinfo);
vf_mac = RTA_DATA(vf[IFLA_VF_MAC]);
vf_vlan = RTA_DATA(vf[IFLA_VF_VLAN]);
vf_tx_rate = RTA_DATA(vf[IFLA_VF_TX_RATE]);
vf_rate = RTA_DATA(vf[IFLA_VF_RATE]);
/* Check if the spoof checking vf info type is supported by
* this kernel.
*/
tmp = (struct rtattr *)((char *)vf[IFLA_VF_TX_RATE] +
vf[IFLA_VF_TX_RATE]->rta_len);
if (tmp->rta_type != IFLA_VF_SPOOFCHK)
vf_spoofchk = NULL;
else
vf_spoofchk = RTA_DATA(vf[IFLA_VF_SPOOFCHK]);
if (vf_spoofchk) {
/* Check if the link state vf info type is supported by
* this kernel.
*/
tmp = (struct rtattr *)((char *)vf[IFLA_VF_SPOOFCHK] +
vf[IFLA_VF_SPOOFCHK]->rta_len);
if (tmp->rta_type != IFLA_VF_LINK_STATE)
vf_linkstate = NULL;
else
vf_linkstate = RTA_DATA(vf[IFLA_VF_LINK_STATE]);
} else
vf_linkstate = NULL;
fprintf(fp, "\n vf %d MAC %s", vf_mac->vf,
ll_addr_n2a((unsigned char *)&vf_mac->mac,
ETH_ALEN, 0, b1, sizeof(b1)));
if (vf_vlan->vlan)
fprintf(fp, ", vlan %d", vf_vlan->vlan);
if (vf_vlan->qos)
fprintf(fp, ", qos %d", vf_vlan->qos);
if (vf_tx_rate->rate)
fprintf(fp, ", tx rate %d (Mbps)", vf_tx_rate->rate);
if (vf_rate->max_tx_rate)
fprintf(fp, ", max_tx_rate %dMbps", vf_rate->max_tx_rate);
if (vf_rate->min_tx_rate)
fprintf(fp, ", min_tx_rate %dMbps", vf_rate->min_tx_rate);
if (vf_spoofchk && vf_spoofchk->setting != -1) {
if (vf_spoofchk->setting)
fprintf(fp, ", spoof checking on");
else
fprintf(fp, ", spoof checking off");
}
if (vf_linkstate) {
if (vf_linkstate->link_state == IFLA_VF_LINK_STATE_AUTO)
fprintf(fp, ", link-state auto");
else if (vf_linkstate->link_state == IFLA_VF_LINK_STATE_ENABLE)
fprintf(fp, ", link-state enable");
else
fprintf(fp, ", link-state disable");
}
}
static void print_num(FILE *fp, unsigned width, uint64_t count)
{
const char *prefix = "kMGTPE";
const unsigned int base = use_iec ? 1024 : 1000;
uint64_t powi = 1;
uint16_t powj = 1;
uint8_t precision = 2;
char buf[64];
if (!human_readable || count < base) {
fprintf(fp, "%-*"PRIu64" ", width, count);
return;
}
/* increase value by a factor of 1000/1024 and print
* if result is something a human can read */
for(;;) {
powi *= base;
if (count / base < powi)
break;
if (!prefix[1])
break;
++prefix;
}
/* try to guess a good number of digits for precision */
for (; precision > 0; precision--) {
powj *= 10;
if (count / powi < powj)
break;
}
snprintf(buf, sizeof(buf), "%.*f%c%s", precision,
(double) count / powi, *prefix, use_iec ? "i" : "");
fprintf(fp, "%-*s ", width, buf);
}
static void print_link_stats64(FILE *fp, const struct rtnl_link_stats64 *s,
const struct rtattr *carrier_changes)
{
/* RX stats */
fprintf(fp, " RX: bytes packets errors dropped overrun mcast %s%s",
s->rx_compressed ? "compressed" : "", _SL_);
fprintf(fp, " ");
print_num(fp, 10, s->rx_bytes);
print_num(fp, 8, s->rx_packets);
print_num(fp, 7, s->rx_errors);
print_num(fp, 7, s->rx_dropped);
print_num(fp, 7, s->rx_over_errors);
print_num(fp, 7, s->multicast);
if (s->rx_compressed)
print_num(fp, 7, s->rx_compressed);
/* RX error stats */
if (show_stats > 1) {
fprintf(fp, "%s", _SL_);
fprintf(fp, " RX errors: length crc frame fifo missed%s", _SL_);
fprintf(fp, " ");
print_num(fp, 8, s->rx_length_errors);
print_num(fp, 7, s->rx_crc_errors);
print_num(fp, 7, s->rx_frame_errors);
print_num(fp, 7, s->rx_fifo_errors);
print_num(fp, 7, s->rx_missed_errors);
}
fprintf(fp, "%s", _SL_);
/* TX stats */
fprintf(fp, " TX: bytes packets errors dropped carrier collsns %s%s",
s->tx_compressed ? "compressed" : "", _SL_);
fprintf(fp, " ");
print_num(fp, 10, s->tx_bytes);
print_num(fp, 8, s->tx_packets);
print_num(fp, 7, s->tx_errors);
print_num(fp, 7, s->tx_dropped);
print_num(fp, 7, s->tx_carrier_errors);
print_num(fp, 7, s->collisions);
if (s->tx_compressed)
print_num(fp, 7, s->tx_compressed);
/* TX error stats */
if (show_stats > 1) {
fprintf(fp, "%s", _SL_);
fprintf(fp, " TX errors: aborted fifo window heartbeat");
if (carrier_changes)
fprintf(fp, " transns");
fprintf(fp, "%s", _SL_);
fprintf(fp, " ");
print_num(fp, 8, s->tx_aborted_errors);
print_num(fp, 7, s->tx_fifo_errors);
print_num(fp, 7, s->tx_window_errors);
print_num(fp, 7, s->tx_heartbeat_errors);
if (carrier_changes)
print_num(fp, 7, *(uint32_t*)RTA_DATA(carrier_changes));
}
}
static void print_link_stats32(FILE *fp, const struct rtnl_link_stats *s,
const struct rtattr *carrier_changes)
{
/* RX stats */
fprintf(fp, " RX: bytes packets errors dropped overrun mcast %s%s",
s->rx_compressed ? "compressed" : "", _SL_);
fprintf(fp, " ");
print_num(fp, 10, s->rx_bytes);
print_num(fp, 8, s->rx_packets);
print_num(fp, 7, s->rx_errors);
print_num(fp, 7, s->rx_dropped);
print_num(fp, 7, s->rx_over_errors);
print_num(fp, 7, s->multicast);
if (s->rx_compressed)
print_num(fp, 7, s->rx_compressed);
/* RX error stats */
if (show_stats > 1) {
fprintf(fp, "%s", _SL_);
fprintf(fp, " RX errors: length crc frame fifo missed%s", _SL_);
fprintf(fp, " ");
print_num(fp, 8, s->rx_length_errors);
print_num(fp, 7, s->rx_crc_errors);
print_num(fp, 7, s->rx_frame_errors);
print_num(fp, 7, s->rx_fifo_errors);
print_num(fp, 7, s->rx_missed_errors);
}
fprintf(fp, "%s", _SL_);
/* TX stats */
fprintf(fp, " TX: bytes packets errors dropped carrier collsns %s%s",
s->tx_compressed ? "compressed" : "", _SL_);
fprintf(fp, " ");
print_num(fp, 10, s->tx_bytes);
print_num(fp, 8, s->tx_packets);
print_num(fp, 7, s->tx_errors);
print_num(fp, 7, s->tx_dropped);
print_num(fp, 7, s->tx_carrier_errors);
print_num(fp, 7, s->collisions);
if (s->tx_compressed)
print_num(fp, 7, s->tx_compressed);
/* TX error stats */
if (show_stats > 1) {
fprintf(fp, "%s", _SL_);
fprintf(fp, " TX errors: aborted fifo window heartbeat");
if (carrier_changes)
fprintf(fp, " transns");
fprintf(fp, "%s", _SL_);
fprintf(fp, " ");
print_num(fp, 8, s->tx_aborted_errors);
print_num(fp, 7, s->tx_fifo_errors);
print_num(fp, 7, s->tx_window_errors);
print_num(fp, 7, s->tx_heartbeat_errors);
if (carrier_changes)
print_num(fp, 7, *(uint32_t*)RTA_DATA(carrier_changes));
}
}
static void __print_link_stats(FILE *fp, struct rtattr **tb)
{
if (tb[IFLA_STATS64])
print_link_stats64(fp, RTA_DATA(tb[IFLA_STATS64]),
tb[IFLA_CARRIER_CHANGES]);
else if (tb[IFLA_STATS])
print_link_stats32(fp, RTA_DATA(tb[IFLA_STATS]),
tb[IFLA_CARRIER_CHANGES]);
}
static void print_link_stats(FILE *fp, struct nlmsghdr *n)
{
struct ifinfomsg *ifi = NLMSG_DATA(n);
struct rtattr * tb[IFLA_MAX+1];
parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi),
n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifi)));
__print_link_stats(fp, tb);
fprintf(fp, "%s", _SL_);
}
int print_linkinfo(const struct sockaddr_nl *who,
struct nlmsghdr *n, void *arg)
{
FILE *fp = (FILE*)arg;
struct ifinfomsg *ifi = NLMSG_DATA(n);
struct rtattr * tb[IFLA_MAX+1];
int len = n->nlmsg_len;
unsigned m_flag = 0;
if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
return 0;
len -= NLMSG_LENGTH(sizeof(*ifi));
if (len < 0)
return -1;
if (filter.ifindex && ifi->ifi_index != filter.ifindex)
return 0;
if (filter.up && !(ifi->ifi_flags&IFF_UP))
return 0;
parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
if (tb[IFLA_IFNAME] == NULL) {
fprintf(stderr, "BUG: device with ifindex %d has nil ifname\n", ifi->ifi_index);
}
if (filter.label &&
(!filter.family || filter.family == AF_PACKET) &&
fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0))
return 0;
if (tb[IFLA_GROUP]) {
int group = *(int*)RTA_DATA(tb[IFLA_GROUP]);
if (filter.group != -1 && group != filter.group)
return -1;
}
if (n->nlmsg_type == RTM_DELLINK)
fprintf(fp, "Deleted ");
fprintf(fp, "%d: %s", ifi->ifi_index,
tb[IFLA_IFNAME] ? rta_getattr_str(tb[IFLA_IFNAME]) : "<nil>");
if (tb[IFLA_LINK]) {
SPRINT_BUF(b1);
int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
if (iflink == 0)
fprintf(fp, "@NONE: ");
else {
fprintf(fp, "@%s: ", ll_idx_n2a(iflink, b1));
m_flag = ll_index_to_flags(iflink);
m_flag = !(m_flag & IFF_UP);
}
} else {
fprintf(fp, ": ");
}
print_link_flags(fp, ifi->ifi_flags, m_flag);
if (tb[IFLA_MTU])
fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
if (tb[IFLA_QDISC])
fprintf(fp, "qdisc %s ", rta_getattr_str(tb[IFLA_QDISC]));
if (tb[IFLA_MASTER]) {
SPRINT_BUF(b1);
fprintf(fp, "master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
}
if (tb[IFLA_PHYS_PORT_ID]) {
SPRINT_BUF(b1);
fprintf(fp, "portid %s ",
hexstring_n2a(RTA_DATA(tb[IFLA_PHYS_PORT_ID]),
RTA_PAYLOAD(tb[IFLA_PHYS_PORT_ID]),
b1, sizeof(b1)));
}
if (tb[IFLA_OPERSTATE])
print_operstate(fp, rta_getattr_u8(tb[IFLA_OPERSTATE]));
if (do_link && tb[IFLA_LINKMODE])
print_linkmode(fp, tb[IFLA_LINKMODE]);
if (tb[IFLA_GROUP]) {
SPRINT_BUF(b1);
int group = *(int*)RTA_DATA(tb[IFLA_GROUP]);
fprintf(fp, "group %s ", rtnl_group_n2a(group, b1, sizeof(b1)));
}
if (filter.showqueue)
print_queuelen(fp, tb);
if (!filter.family || filter.family == AF_PACKET) {
SPRINT_BUF(b1);
fprintf(fp, "%s", _SL_);
fprintf(fp, " link/%s ", ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
if (tb[IFLA_ADDRESS]) {
fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
RTA_PAYLOAD(tb[IFLA_ADDRESS]),
ifi->ifi_type,
b1, sizeof(b1)));
}
if (tb[IFLA_BROADCAST]) {
if (ifi->ifi_flags&IFF_POINTOPOINT)
fprintf(fp, " peer ");
else
fprintf(fp, " brd ");
fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
RTA_PAYLOAD(tb[IFLA_BROADCAST]),
ifi->ifi_type,
b1, sizeof(b1)));
}
}
if (do_link && tb[IFLA_PROMISCUITY] && show_details)
fprintf(fp, " promiscuity %u ",
*(int*)RTA_DATA(tb[IFLA_PROMISCUITY]));
if (do_link && tb[IFLA_LINKINFO] && show_details)
print_linktype(fp, tb[IFLA_LINKINFO]);
if (do_link && tb[IFLA_IFALIAS]) {
fprintf(fp, "%s alias %s", _SL_,
rta_getattr_str(tb[IFLA_IFALIAS]));
}
if (do_link && show_stats) {
fprintf(fp, "%s", _SL_);
__print_link_stats(fp, tb);
}
if (do_link && tb[IFLA_VFINFO_LIST] && tb[IFLA_NUM_VF]) {
struct rtattr *i, *vflist = tb[IFLA_VFINFO_LIST];
int rem = RTA_PAYLOAD(vflist);
for (i = RTA_DATA(vflist); RTA_OK(i, rem); i = RTA_NEXT(i, rem))
print_vfinfo(fp, i);
}
fprintf(fp, "\n");
fflush(fp);
return 1;
}
static int flush_update(void)
{
if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) {
perror("Failed to send flush request");
return -1;
}
filter.flushp = 0;
return 0;
}
static int set_lifetime(unsigned int *lifetime, char *argv)
{
if (strcmp(argv, "forever") == 0)
*lifetime = INFINITY_LIFE_TIME;
else if (get_u32(lifetime, argv, 0))
return -1;
return 0;
}
static unsigned int get_ifa_flags(struct ifaddrmsg *ifa,
struct rtattr *ifa_flags_attr)
{
return ifa_flags_attr ? rta_getattr_u32(ifa_flags_attr) :
ifa->ifa_flags;
}
int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
void *arg)
{
FILE *fp = arg;
struct ifaddrmsg *ifa = NLMSG_DATA(n);
int len = n->nlmsg_len;
int deprecated = 0;
/* Use local copy of ifa_flags to not interfere with filtering code */
unsigned int ifa_flags;
struct rtattr * rta_tb[IFA_MAX+1];
char abuf[256];
SPRINT_BUF(b1);
if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
return 0;
len -= NLMSG_LENGTH(sizeof(*ifa));
if (len < 0) {
fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
return -1;
}
if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
return 0;
parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa),
n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
ifa_flags = get_ifa_flags(ifa, rta_tb[IFA_FLAGS]);
if (!rta_tb[IFA_LOCAL])
rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
if (!rta_tb[IFA_ADDRESS])
rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
if (filter.ifindex && filter.ifindex != ifa->ifa_index)
return 0;
if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
return 0;
if ((filter.flags ^ ifa_flags) & filter.flagmask)
return 0;
if (filter.label) {
SPRINT_BUF(b1);
const char *label;
if (rta_tb[IFA_LABEL])
label = RTA_DATA(rta_tb[IFA_LABEL]);
else
label = ll_idx_n2a(ifa->ifa_index, b1);
if (fnmatch(filter.label, label, 0) != 0)
return 0;
}
if (filter.pfx.family) {
if (rta_tb[IFA_LOCAL]) {
inet_prefix dst;
memset(&dst, 0, sizeof(dst));
dst.family = ifa->ifa_family;
memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
return 0;
}
}
if (filter.family && filter.family != ifa->ifa_family)
return 0;
if (filter.flushb) {
struct nlmsghdr *fn;
if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
if (flush_update())
return -1;
}
fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
memcpy(fn, n, n->nlmsg_len);
fn->nlmsg_type = RTM_DELADDR;
fn->nlmsg_flags = NLM_F_REQUEST;
fn->nlmsg_seq = ++rth.seq;
filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
filter.flushed++;
if (show_stats < 2)
return 0;
}
if (n->nlmsg_type == RTM_DELADDR)
fprintf(fp, "Deleted ");
if (filter.oneline || filter.flushb)
fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
if (ifa->ifa_family == AF_INET)
fprintf(fp, " inet ");
else if (ifa->ifa_family == AF_INET6)
fprintf(fp, " inet6 ");
else if (ifa->ifa_family == AF_DECnet)
fprintf(fp, " dnet ");
else if (ifa->ifa_family == AF_IPX)
fprintf(fp, " ipx ");
else
fprintf(fp, " family %d ", ifa->ifa_family);
if (rta_tb[IFA_LOCAL]) {
fprintf(fp, "%s", format_host(ifa->ifa_family,
RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
RTA_DATA(rta_tb[IFA_LOCAL]),
abuf, sizeof(abuf)));
if (rta_tb[IFA_ADDRESS] == NULL ||
memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]),
ifa->ifa_family == AF_INET ? 4 : 16) == 0) {
fprintf(fp, "/%d ", ifa->ifa_prefixlen);
} else {
fprintf(fp, " peer %s/%d ",
format_host(ifa->ifa_family,
RTA_PAYLOAD(rta_tb[IFA_ADDRESS]),
RTA_DATA(rta_tb[IFA_ADDRESS]),
abuf, sizeof(abuf)),
ifa->ifa_prefixlen);
}
}
if (rta_tb[IFA_BROADCAST]) {
fprintf(fp, "brd %s ",
format_host(ifa->ifa_family,
RTA_PAYLOAD(rta_tb[IFA_BROADCAST]),
RTA_DATA(rta_tb[IFA_BROADCAST]),
abuf, sizeof(abuf)));
}
if (rta_tb[IFA_ANYCAST]) {
fprintf(fp, "any %s ",
format_host(ifa->ifa_family,
RTA_PAYLOAD(rta_tb[IFA_ANYCAST]),
RTA_DATA(rta_tb[IFA_ANYCAST]),
abuf, sizeof(abuf)));
}
fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1)));
if (ifa_flags & IFA_F_SECONDARY) {
ifa_flags &= ~IFA_F_SECONDARY;
if (ifa->ifa_family == AF_INET6)
fprintf(fp, "temporary ");
else
fprintf(fp, "secondary ");
}
if (ifa_flags & IFA_F_TENTATIVE) {
ifa_flags &= ~IFA_F_TENTATIVE;
fprintf(fp, "tentative ");
}
if (ifa_flags & IFA_F_DEPRECATED) {
ifa_flags &= ~IFA_F_DEPRECATED;
deprecated = 1;
fprintf(fp, "deprecated ");
}
if (ifa_flags & IFA_F_HOMEADDRESS) {
ifa_flags &= ~IFA_F_HOMEADDRESS;
fprintf(fp, "home ");
}
if (ifa_flags & IFA_F_NODAD) {
ifa_flags &= ~IFA_F_NODAD;
fprintf(fp, "nodad ");
}
if (ifa_flags & IFA_F_MANAGETEMPADDR) {
ifa_flags &= ~IFA_F_MANAGETEMPADDR;
fprintf(fp, "mngtmpaddr ");
}
if (ifa_flags & IFA_F_NOPREFIXROUTE) {
ifa_flags &= ~IFA_F_NOPREFIXROUTE;
fprintf(fp, "noprefixroute ");
}
if (!(ifa_flags & IFA_F_PERMANENT)) {
fprintf(fp, "dynamic ");
} else
ifa_flags &= ~IFA_F_PERMANENT;
if (ifa_flags & IFA_F_DADFAILED) {
ifa_flags &= ~IFA_F_DADFAILED;
fprintf(fp, "dadfailed ");
}
if (ifa_flags)
fprintf(fp, "flags %02x ", ifa_flags);
if (rta_tb[IFA_LABEL])
fprintf(fp, "%s", rta_getattr_str(rta_tb[IFA_LABEL]));
if (rta_tb[IFA_CACHEINFO]) {
struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
fprintf(fp, "%s", _SL_);
fprintf(fp, " valid_lft ");
if (ci->ifa_valid == INFINITY_LIFE_TIME)
fprintf(fp, "forever");
else
fprintf(fp, "%usec", ci->ifa_valid);
fprintf(fp, " preferred_lft ");
if (ci->ifa_prefered == INFINITY_LIFE_TIME)
fprintf(fp, "forever");
else {
if (deprecated)
fprintf(fp, "%dsec", ci->ifa_prefered);
else
fprintf(fp, "%usec", ci->ifa_prefered);
}
}
fprintf(fp, "\n");
fflush(fp);
return 0;
}
static int print_addrinfo_primary(const struct sockaddr_nl *who,
struct nlmsghdr *n, void *arg)
{
struct ifaddrmsg *ifa = NLMSG_DATA(n);
if (ifa->ifa_flags & IFA_F_SECONDARY)
return 0;
return print_addrinfo(who, n, arg);
}
static int print_addrinfo_secondary(const struct sockaddr_nl *who,
struct nlmsghdr *n, void *arg)
{
struct ifaddrmsg *ifa = NLMSG_DATA(n);
if (!(ifa->ifa_flags & IFA_F_SECONDARY))
return 0;
return print_addrinfo(who, n, arg);
}
struct nlmsg_list
{
struct nlmsg_list *next;
struct nlmsghdr h;
};
struct nlmsg_chain
{
struct nlmsg_list *head;
struct nlmsg_list *tail;
};
static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo, FILE *fp)
{
for ( ;ainfo ; ainfo = ainfo->next) {
struct nlmsghdr *n = &ainfo->h;
struct ifaddrmsg *ifa = NLMSG_DATA(n);
if (n->nlmsg_type != RTM_NEWADDR)
continue;
if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa)))
return -1;
if (ifa->ifa_index != ifindex ||
(filter.family && filter.family != ifa->ifa_family))
continue;
print_addrinfo(NULL, n, fp);
}
return 0;
}
static int store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n,
void *arg)
{
struct nlmsg_chain *lchain = (struct nlmsg_chain *)arg;
struct nlmsg_list *h;
h = malloc(n->nlmsg_len+sizeof(void*));
if (h == NULL)
return -1;
memcpy(&h->h, n, n->nlmsg_len);
h->next = NULL;
if (lchain->tail)
lchain->tail->next = h;
else
lchain->head = h;
lchain->tail = h;
ll_remember_index(who, n, NULL);
return 0;
}
static __u32 ipadd_dump_magic = 0x47361222;
static int ipadd_save_prep(void)
{
int ret;
if (isatty(STDOUT_FILENO)) {
fprintf(stderr, "Not sending a binary stream to stdout\n");
return -1;
}
ret = write(STDOUT_FILENO, &ipadd_dump_magic, sizeof(ipadd_dump_magic));
if (ret != sizeof(ipadd_dump_magic)) {
fprintf(stderr, "Can't write magic to dump file\n");
return -1;
}
return 0;
}
static int ipadd_dump_check_magic(void)
{
int ret;
__u32 magic = 0;
if (isatty(STDIN_FILENO)) {
fprintf(stderr, "Can't restore addr dump from a terminal\n");
return -1;
}
ret = fread(&magic, sizeof(magic), 1, stdin);
if (magic != ipadd_dump_magic) {
fprintf(stderr, "Magic mismatch (%d elems, %x magic)\n", ret, magic);
return -1;
}
return 0;
}
static int save_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n,
void *arg)
{
int ret;
ret = write(STDOUT_FILENO, n, n->nlmsg_len);
if ((ret > 0) && (ret != n->nlmsg_len)) {
fprintf(stderr, "Short write while saving nlmsg\n");
ret = -EIO;
}
return ret == n->nlmsg_len ? 0 : ret;
}
static int show_handler(const struct sockaddr_nl *nl, struct nlmsghdr *n, void *arg)
{
struct ifaddrmsg *ifa = NLMSG_DATA(n);
printf("if%d:\n", ifa->ifa_index);
print_addrinfo(NULL, n, stdout);
return 0;
}
static int ipaddr_showdump(void)
{
if (ipadd_dump_check_magic())
exit(-1);
exit(rtnl_from_file(stdin, &show_handler, NULL));
}
static int restore_handler(const struct sockaddr_nl *nl, struct nlmsghdr *n, void *arg)
{
int ret;
n->nlmsg_flags |= NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
ll_init_map(&rth);
ret = rtnl_talk(&rth, n, 0, 0, n);
if ((ret < 0) && (errno == EEXIST))
ret = 0;
return ret;
}
static int ipaddr_restore(void)
{
if (ipadd_dump_check_magic())
exit(-1);
exit(rtnl_from_file(stdin, &restore_handler, NULL));
}
static void free_nlmsg_chain(struct nlmsg_chain *info)
{
struct nlmsg_list *l, *n;
for (l = info->head; l; l = n) {
n = l->next;
free(l);
}
}
static void ipaddr_filter(struct nlmsg_chain *linfo, struct nlmsg_chain *ainfo)
{
struct nlmsg_list *l, **lp;
lp = &linfo->head;
while ( (l = *lp) != NULL) {
int ok = 0;
int missing_net_address = 1;
struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
struct nlmsg_list *a;
for (a = ainfo->head; a; a = a->next) {
struct nlmsghdr *n = &a->h;
struct ifaddrmsg *ifa = NLMSG_DATA(n);
struct rtattr *tb[IFA_MAX + 1];
unsigned int ifa_flags;
if (ifa->ifa_index != ifi->ifi_index)
continue;
missing_net_address = 0;
if (filter.family && filter.family != ifa->ifa_family)
continue;
if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
continue;
parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
ifa_flags = get_ifa_flags(ifa, tb[IFA_FLAGS]);
if ((filter.flags ^ ifa_flags) & filter.flagmask)
continue;
if (filter.pfx.family || filter.label) {
if (!tb[IFA_LOCAL])
tb[IFA_LOCAL] = tb[IFA_ADDRESS];
if (filter.pfx.family && tb[IFA_LOCAL]) {
inet_prefix dst;
memset(&dst, 0, sizeof(dst));
dst.family = ifa->ifa_family;
memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL]));
if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
continue;
}
if (filter.label) {
SPRINT_BUF(b1);
const char *label;
if (tb[IFA_LABEL])
label = RTA_DATA(tb[IFA_LABEL]);
else
label = ll_idx_n2a(ifa->ifa_index, b1);
if (fnmatch(filter.label, label, 0) != 0)
continue;
}
}
ok = 1;
break;
}
if (missing_net_address &&
(filter.family == AF_UNSPEC || filter.family == AF_PACKET))
ok = 1;
if (!ok) {
*lp = l->next;
free(l);
} else
lp = &l->next;
}
}
static int ipaddr_flush(void)
{
int round = 0;
char flushb[4096-512];
filter.flushb = flushb;
filter.flushp = 0;
filter.flushe = sizeof(flushb);
while ((max_flush_loops == 0) || (round < max_flush_loops)) {
const struct rtnl_dump_filter_arg a[3] = {
{
.filter = print_addrinfo_secondary,
.arg1 = stdout,
},
{
.filter = print_addrinfo_primary,
.arg1 = stdout,
},
{
.filter = NULL,
.arg1 = NULL,
},
};
if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
perror("Cannot send dump request");
exit(1);
}
filter.flushed = 0;
if (rtnl_dump_filter_l(&rth, a) < 0) {
fprintf(stderr, "Flush terminated\n");
exit(1);
}
if (filter.flushed == 0) {
flush_done:
if (show_stats) {
if (round == 0)
printf("Nothing to flush.\n");
else
printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
}
fflush(stdout);
return 0;
}
round++;
if (flush_update() < 0)
return 1;
if (show_stats) {
printf("\n*** Round %d, deleting %d addresses ***\n", round, filter.flushed);
fflush(stdout);
}
/* If we are flushing, and specifying primary, then we
* want to flush only a single round. Otherwise, we'll
* start flushing secondaries that were promoted to
* primaries.
*/
if (!(filter.flags & IFA_F_SECONDARY) && (filter.flagmask & IFA_F_SECONDARY))
goto flush_done;
}
fprintf(stderr, "*** Flush remains incomplete after %d rounds. ***\n", max_flush_loops);
fflush(stderr);
return 1;
}
static int ipaddr_list_flush_or_save(int argc, char **argv, int action)
{
struct nlmsg_chain linfo = { NULL, NULL};
struct nlmsg_chain ainfo = { NULL, NULL};
struct nlmsg_list *l;
char *filter_dev = NULL;
int no_link = 0;
ipaddr_reset_filter(oneline);
filter.showqueue = 1;
if (filter.family == AF_UNSPEC)
filter.family = preferred_family;
filter.group = -1;
if (action == IPADD_FLUSH) {
if (argc <= 0) {
fprintf(stderr, "Flush requires arguments.\n");
return -1;
}
if (filter.family == AF_PACKET) {
fprintf(stderr, "Cannot flush link addresses.\n");
return -1;
}
}
while (argc > 0) {
if (strcmp(*argv, "to") == 0) {
NEXT_ARG();
get_prefix(&filter.pfx, *argv, filter.family);
if (filter.family == AF_UNSPEC)
filter.family = filter.pfx.family;
} else if (strcmp(*argv, "scope") == 0) {
unsigned scope = 0;
NEXT_ARG();
filter.scopemask = -1;
if (rtnl_rtscope_a2n(&scope, *argv)) {
if (strcmp(*argv, "all") != 0)
invarg("invalid \"scope\"\n", *argv);
scope = RT_SCOPE_NOWHERE;
filter.scopemask = 0;
}
filter.scope = scope;
} else if (strcmp(*argv, "up") == 0) {
filter.up = 1;
} else if (strcmp(*argv, "dynamic") == 0) {
filter.flags &= ~IFA_F_PERMANENT;
filter.flagmask |= IFA_F_PERMANENT;
} else if (strcmp(*argv, "permanent") == 0) {
filter.flags |= IFA_F_PERMANENT;
filter.flagmask |= IFA_F_PERMANENT;
} else if (strcmp(*argv, "secondary") == 0 ||
strcmp(*argv, "temporary") == 0) {
filter.flags |= IFA_F_SECONDARY;
filter.flagmask |= IFA_F_SECONDARY;
} else if (strcmp(*argv, "primary") == 0) {
filter.flags &= ~IFA_F_SECONDARY;
filter.flagmask |= IFA_F_SECONDARY;
} else if (strcmp(*argv, "tentative") == 0) {
filter.flags |= IFA_F_TENTATIVE;
filter.flagmask |= IFA_F_TENTATIVE;
} else if (strcmp(*argv, "deprecated") == 0) {
filter.flags |= IFA_F_DEPRECATED;
filter.flagmask |= IFA_F_DEPRECATED;
} else if (strcmp(*argv, "home") == 0) {
filter.flags |= IFA_F_HOMEADDRESS;
filter.flagmask |= IFA_F_HOMEADDRESS;
} else if (strcmp(*argv, "nodad") == 0) {
filter.flags |= IFA_F_NODAD;
filter.flagmask |= IFA_F_NODAD;
} else if (strcmp(*argv, "mngtmpaddr") == 0) {
filter.flags |= IFA_F_MANAGETEMPADDR;
filter.flagmask |= IFA_F_MANAGETEMPADDR;
} else if (strcmp(*argv, "noprefixroute") == 0) {
filter.flags |= IFA_F_NOPREFIXROUTE;
filter.flagmask |= IFA_F_NOPREFIXROUTE;
} else if (strcmp(*argv, "dadfailed") == 0) {
filter.flags |= IFA_F_DADFAILED;
filter.flagmask |= IFA_F_DADFAILED;
} else if (strcmp(*argv, "label") == 0) {
NEXT_ARG();
filter.label = *argv;
} else if (strcmp(*argv, "group") == 0) {
NEXT_ARG();
if (rtnl_group_a2n(&filter.group, *argv))
invarg("Invalid \"group\" value\n", *argv);
} else {
if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
}
if (matches(*argv, "help") == 0)
usage();
if (filter_dev)
duparg2("dev", *argv);
filter_dev = *argv;
}
argv++; argc--;
}
if (filter_dev) {
filter.ifindex = ll_name_to_index(filter_dev);
if (filter.ifindex <= 0) {
fprintf(stderr, "Device \"%s\" does not exist.\n", filter_dev);
return -1;
}
}
if (action == IPADD_FLUSH)
return ipaddr_flush();
if (action == IPADD_SAVE) {
if (ipadd_save_prep())
exit(1);
if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETADDR) < 0) {
perror("Cannot send dump request");
exit(1);
}
if (rtnl_dump_filter(&rth, save_nlmsg, stdout) < 0) {
fprintf(stderr, "Save terminated\n");
exit(1);
}
exit(0);
}
/*
* If only filter_dev present and none of the other
* link filters are present, use RTM_GETLINK to get
* the link device
*/
if (filter_dev && filter.group == -1 && do_link == 1) {
if (iplink_get(0, filter_dev, RTEXT_FILTER_VF) < 0) {
perror("Cannot send link get request");
exit(1);
}
exit(0);
}
if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK) < 0) {
perror("Cannot send dump request");
exit(1);
}
if (rtnl_dump_filter(&rth, store_nlmsg, &linfo) < 0) {
fprintf(stderr, "Dump terminated\n");
exit(1);
}
if (filter.family != AF_PACKET) {
if (filter.oneline)
no_link = 1;
if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
perror("Cannot send dump request");
exit(1);
}
if (rtnl_dump_filter(&rth, store_nlmsg, &ainfo) < 0) {
fprintf(stderr, "Dump terminated\n");
exit(1);
}
ipaddr_filter(&linfo, &ainfo);
}
for (l = linfo.head; l; l = l->next) {
int res = 0;
if (no_link || (res = print_linkinfo(NULL, &l->h, stdout)) >= 0) {
struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
if (filter.family != AF_PACKET)
print_selected_addrinfo(ifi->ifi_index,
ainfo.head, stdout);
if (res > 0 && !do_link && show_stats)
print_link_stats(stdout, &l->h);
}
}
fflush(stdout);
free_nlmsg_chain(&ainfo);
free_nlmsg_chain(&linfo);
return 0;
}
static void
ipaddr_loop_each_vf(struct rtattr *tb[], int vfnum, int *min, int *max)
{
struct rtattr *vflist = tb[IFLA_VFINFO_LIST];
struct rtattr *i, *vf[IFLA_VF_MAX+1];
struct ifla_vf_rate *vf_rate;
int rem;
rem = RTA_PAYLOAD(vflist);
for (i = RTA_DATA(vflist); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
parse_rtattr_nested(vf, IFLA_VF_MAX, i);
vf_rate = RTA_DATA(vf[IFLA_VF_RATE]);
if (vf_rate->vf == vfnum) {
*min = vf_rate->min_tx_rate;
*max = vf_rate->max_tx_rate;
return;
}
}
fprintf(stderr, "Cannot find VF %d\n", vfnum);
exit(1);
}
void ipaddr_get_vf_rate(int vfnum, int *min, int *max, int idx)
{
struct nlmsg_chain linfo = { NULL, NULL};
struct rtattr *tb[IFLA_MAX+1];
struct ifinfomsg *ifi;
struct nlmsg_list *l;
struct nlmsghdr *n;
int len;
if (rtnl_wilddump_request(&rth, AF_UNSPEC, RTM_GETLINK) < 0) {
perror("Cannot send dump request");
exit(1);
}
if (rtnl_dump_filter(&rth, store_nlmsg, &linfo) < 0) {
fprintf(stderr, "Dump terminated\n");
exit(1);
}
for (l = linfo.head; l; l = l->next) {
n = &l->h;
ifi = NLMSG_DATA(n);
len = n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifi));
if (len < 0 || (idx && idx != ifi->ifi_index))
continue;
parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
if ((tb[IFLA_VFINFO_LIST] && tb[IFLA_NUM_VF])) {
ipaddr_loop_each_vf(tb, vfnum, min, max);
return;
}
}
}
int ipaddr_list_link(int argc, char **argv)
{
preferred_family = AF_PACKET;
do_link = 1;
return ipaddr_list_flush_or_save(argc, argv, IPADD_LIST);
}
void ipaddr_reset_filter(int oneline)
{
memset(&filter, 0, sizeof(filter));
filter.oneline = oneline;
}
static int default_scope(inet_prefix *lcl)
{
if (lcl->family == AF_INET) {
if (lcl->bytelen >= 1 && *(__u8*)&lcl->data == 127)
return RT_SCOPE_HOST;
}
return 0;
}
static int ipaddr_modify(int cmd, int flags, int argc, char **argv)
{
struct {
struct nlmsghdr n;
struct ifaddrmsg ifa;
char buf[256];
} req;
char *d = NULL;
char *l = NULL;
char *lcl_arg = NULL;
char *valid_lftp = NULL;
char *preferred_lftp = NULL;
inet_prefix lcl;
inet_prefix peer;
int local_len = 0;
int peer_len = 0;
int brd_len = 0;
int any_len = 0;
int scoped = 0;
__u32 preferred_lft = INFINITY_LIFE_TIME;
__u32 valid_lft = INFINITY_LIFE_TIME;
struct ifa_cacheinfo cinfo;
unsigned int ifa_flags = 0;
memset(&req, 0, sizeof(req));
req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
req.n.nlmsg_flags = NLM_F_REQUEST | flags;
req.n.nlmsg_type = cmd;
req.ifa.ifa_family = preferred_family;
while (argc > 0) {
if (strcmp(*argv, "peer") == 0 ||
strcmp(*argv, "remote") == 0) {
NEXT_ARG();
if (peer_len)
duparg("peer", *argv);
get_prefix(&peer, *argv, req.ifa.ifa_family);
peer_len = peer.bytelen;
if (req.ifa.ifa_family == AF_UNSPEC)
req.ifa.ifa_family = peer.family;
addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
req.ifa.ifa_prefixlen = peer.bitlen;
} else if (matches(*argv, "broadcast") == 0 ||
strcmp(*argv, "brd") == 0) {
inet_prefix addr;
NEXT_ARG();
if (brd_len)
duparg("broadcast", *argv);
if (strcmp(*argv, "+") == 0)
brd_len = -1;
else if (strcmp(*argv, "-") == 0)
brd_len = -2;
else {
get_addr(&addr, *argv, req.ifa.ifa_family);
if (req.ifa.ifa_family == AF_UNSPEC)
req.ifa.ifa_family = addr.family;
addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
brd_len = addr.bytelen;
}
} else if (strcmp(*argv, "anycast") == 0) {
inet_prefix addr;
NEXT_ARG();
if (any_len)
duparg("anycast", *argv);
get_addr(&addr, *argv, req.ifa.ifa_family);
if (req.ifa.ifa_family == AF_UNSPEC)
req.ifa.ifa_family = addr.family;
addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
any_len = addr.bytelen;
} else if (strcmp(*argv, "scope") == 0) {
unsigned scope = 0;
NEXT_ARG();
if (rtnl_rtscope_a2n(&scope, *argv))
invarg("invalid scope value.", *argv);
req.ifa.ifa_scope = scope;
scoped = 1;
} else if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
d = *argv;
} else if (strcmp(*argv, "label") == 0) {
NEXT_ARG();
l = *argv;
addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1);
} else if (matches(*argv, "valid_lft") == 0) {
if (valid_lftp)
duparg("valid_lft", *argv);
NEXT_ARG();
valid_lftp = *argv;
if (set_lifetime(&valid_lft, *argv))
invarg("valid_lft value", *argv);
} else if (matches(*argv, "preferred_lft") == 0) {
if (preferred_lftp)
duparg("preferred_lft", *argv);
NEXT_ARG();
preferred_lftp = *argv;
if (set_lifetime(&preferred_lft, *argv))
invarg("preferred_lft value", *argv);
} else if (strcmp(*argv, "home") == 0) {
ifa_flags |= IFA_F_HOMEADDRESS;
} else if (strcmp(*argv, "nodad") == 0) {
ifa_flags |= IFA_F_NODAD;
} else if (strcmp(*argv, "mngtmpaddr") == 0) {
ifa_flags |= IFA_F_MANAGETEMPADDR;
} else if (strcmp(*argv, "noprefixroute") == 0) {
ifa_flags |= IFA_F_NOPREFIXROUTE;
} else {
if (strcmp(*argv, "local") == 0) {
NEXT_ARG();
}
if (matches(*argv, "help") == 0)
usage();
if (local_len)
duparg2("local", *argv);
lcl_arg = *argv;
get_prefix(&lcl, *argv, req.ifa.ifa_family);
if (req.ifa.ifa_family == AF_UNSPEC)
req.ifa.ifa_family = lcl.family;
addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
local_len = lcl.bytelen;
}
argc--; argv++;
}
if (ifa_flags <= 0xff)
req.ifa.ifa_flags = ifa_flags;
else
addattr32(&req.n, sizeof(req), IFA_FLAGS, ifa_flags);
if (d == NULL) {
fprintf(stderr, "Not enough information: \"dev\" argument is required.\n");
return -1;
}
if (l && matches(d, l) != 0) {
fprintf(stderr, "\"dev\" (%s) must match \"label\" (%s).\n", d, l);
return -1;
}
if (peer_len == 0 && local_len) {
if (cmd == RTM_DELADDR && lcl.family == AF_INET && !(lcl.flags & PREFIXLEN_SPECIFIED)) {
fprintf(stderr,
"Warning: Executing wildcard deletion to stay compatible with old scripts.\n" \
" Explicitly specify the prefix length (%s/%d) to avoid this warning.\n" \
" This special behaviour is likely to disappear in further releases,\n" \
" fix your scripts!\n", lcl_arg, local_len*8);
} else {
peer = lcl;
addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
}
}
if (req.ifa.ifa_prefixlen == 0)
req.ifa.ifa_prefixlen = lcl.bitlen;
if (brd_len < 0 && cmd != RTM_DELADDR) {
inet_prefix brd;
int i;
if (req.ifa.ifa_family != AF_INET) {
fprintf(stderr, "Broadcast can be set only for IPv4 addresses\n");
return -1;
}
brd = peer;
if (brd.bitlen <= 30) {
for (i = 31; i >= brd.bitlen; i--) {
if (brd_len == -1)
brd.data[0] |= htonl(1<<(31-i));
else
brd.data[0] &= ~htonl(1<<(31-i));
}
addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
brd_len = brd.bytelen;
}
}
if (!scoped && cmd != RTM_DELADDR)
req.ifa.ifa_scope = default_scope(&lcl);
if ((req.ifa.ifa_index = ll_name_to_index(d)) == 0) {
fprintf(stderr, "Cannot find device \"%s\"\n", d);
return -1;
}
if (valid_lftp || preferred_lftp) {
if (!valid_lft) {
fprintf(stderr, "valid_lft is zero\n");
return -1;
}
if (valid_lft < preferred_lft) {
fprintf(stderr, "preferred_lft is greater than valid_lft\n");
return -1;
}
memset(&cinfo, 0, sizeof(cinfo));
cinfo.ifa_prefered = preferred_lft;
cinfo.ifa_valid = valid_lft;
addattr_l(&req.n, sizeof(req), IFA_CACHEINFO, &cinfo,
sizeof(cinfo));
}
if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
return -2;
return 0;
}
int do_ipaddr(int argc, char **argv)
{
if (argc < 1)
return ipaddr_list_flush_or_save(0, NULL, IPADD_LIST);
if (matches(*argv, "add") == 0)
return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1);
if (matches(*argv, "change") == 0 ||
strcmp(*argv, "chg") == 0)
return ipaddr_modify(RTM_NEWADDR, NLM_F_REPLACE, argc-1, argv+1);
if (matches(*argv, "replace") == 0)
return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1);
if (matches(*argv, "delete") == 0)
return ipaddr_modify(RTM_DELADDR, 0, argc-1, argv+1);
if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
|| matches(*argv, "lst") == 0)
return ipaddr_list_flush_or_save(argc-1, argv+1, IPADD_LIST);
if (matches(*argv, "flush") == 0)
return ipaddr_list_flush_or_save(argc-1, argv+1, IPADD_FLUSH);
if (matches(*argv, "save") == 0)
return ipaddr_list_flush_or_save(argc-1, argv+1, IPADD_SAVE);
if (matches(*argv, "showdump") == 0)
return ipaddr_showdump();
if (matches(*argv, "restore") == 0)
return ipaddr_restore();
if (matches(*argv, "help") == 0)
usage();
fprintf(stderr, "Command \"%s\" is unknown, try \"ip addr help\".\n", *argv);
exit(-1);
}
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