static int ipnetns_have_nsid(void)
{
struct {
struct nlmsghdr n;
struct rtgenmsg g;
char buf[1024];
} req;
int fd;
if (have_rtnl_getnsid < 0) {
memset(&req, 0, sizeof(req));
req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtgenmsg));
req.n.nlmsg_flags = NLM_F_REQUEST;
req.n.nlmsg_type = RTM_GETNSID;
req.g.rtgen_family = AF_UNSPEC;
fd = open("/proc/self/ns/net", O_RDONLY);
if (fd < 0) {
perror("open(\"/proc/self/ns/net\")");
exit(1);
}
addattr32(&req.n, 1024, NETNSA_FD, fd);
if (rtnl_send(&rth, &req.n, req.n.nlmsg_len) < 0) {
perror("request send failed");
exit(1);
}
rtnl_listen(&rth, ipnetns_accept_msg, NULL);
close(fd);
}
return have_rtnl_getnsid;
}
static int do_show(int argc, char **argv)
{
struct {
struct nlmsghdr n;
struct netconfmsg ncm;
char buf[1024];
} req;
ipnetconf_reset_filter(0);
filter.family = preferred_family;
if (filter.family == AF_UNSPEC)
filter.family = AF_INET;
while (argc > 0) {
if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
filter.ifindex = ll_name_to_index(*argv);
if (filter.ifindex <= 0) {
fprintf(stderr, "Device \"%s\" does not exist.\n",
*argv);
return -1;
}
}
argv++; argc--;
}
ll_init_map(&rth);
if (filter.ifindex) {
memset(&req, 0, sizeof(req));
req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct netconfmsg));
req.n.nlmsg_flags = NLM_F_REQUEST|NLM_F_ACK;
req.n.nlmsg_type = RTM_GETNETCONF;
req.ncm.ncm_family = filter.family;
if (filter.ifindex)
addattr_l(&req.n, sizeof(req), NETCONFA_IFINDEX,
&filter.ifindex, sizeof(filter.ifindex));
if (rtnl_send(&rth, &req.n, req.n.nlmsg_len) < 0) {
perror("Can not send request");
exit(1);
}
rtnl_listen(&rth, print_netconf, stdout);
} else {
dump:
if (rtnl_wilddump_request(&rth, filter.family, RTM_GETNETCONF) < 0) {
perror("Cannot send dump request");
exit(1);
}
if (rtnl_dump_filter(&rth, print_netconf2, stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
exit(1);
}
if (preferred_family == AF_UNSPEC) {
preferred_family = AF_INET6;
filter.family = AF_INET6;
goto dump;
}
}
return 0;
}
void neigh_flush_table(char *iface)
{
struct rtnl_handle rth;
char flushb[4096-512];
DEBUG_MSG("neigh_flush_table %s", iface);
memset(&filter, 0, sizeof(filter));
filter.state = ~0;
filter.family = AF_INET;
/* flush all but permanent and noarp */
filter.state = ~(NUD_PERMANENT|NUD_NOARP);
/* open the netlink socket */
if (rtnl_open(&rth, 0) < 0)
ERROR_MSG("rtnl_open()");
ll_init_map(&rth);
/* fill the device data */
if ((filter.index = ll_name_to_index(iface)) == 0)
ERROR_MSG("ll_name_to_index(%s)", iface);
filter.flushb = flushb;
filter.flushp = 0;
filter.flushe = sizeof(flushb);
filter.rth = &rth;
filter.state &= ~NUD_FAILED;
for (;;) {
if (rtnl_wilddump_request(&rth, filter.family, RTM_GETNEIGH) < 0)
ERROR_MSG("rtnl_wilddump_request()");
filter.flushed = 0;
/*
* count how many neigh are to be flushed
* and prepare the data
*/
if (rtnl_dump_filter(&rth, count_neigh, stdout, NULL, NULL) < 0)
ERROR_MSG("rtnl_dump_filter()");
if (filter.flushed == 0)
return;
if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0)
ERROR_MSG("rtnl_send()");
filter.flushp = 0;
DEBUG_MSG("*** deleting %d entries ***", filter.flushed);
}
}
static int
iplink_have_newlink(void)
{
struct iplink_req req;
struct softgred_config *cfg = softgred_config_ref();
if (have_rtnl_newlink < 0)
{
memset(&req, 0, sizeof(req));
req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
req.n.nlmsg_flags = NLM_F_REQUEST|NLM_F_ACK;
req.n.nlmsg_type = RTM_NEWLINK;
req.i.ifi_family = AF_UNSPEC;
if (rtnl_send(&cfg->rth, &req.n, req.n.nlmsg_len) < 0)
{
perror("request send failed");
exit(1);
}
rtnl_listen(&cfg->rth, accept_msg, NULL);
}
return have_rtnl_newlink;
}
/*
* All the code below this point is ripped from iproute2/iproute.c
* written by Alexey Kuznetsov, <*****@*****.**>.
*
* Modified lightly
*/
static int flush_update(void)
{
if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
error("Failed to send flush request: %s", strerror(errno));
return -1;
}
filter.flushp = 0;
return 0;
}
static int flush_update(void)
{
if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
perror("Failed to send flush request\n");
return -1;
}
filter.flushp = 0;
return 0;
}
static int flush_update(void)
{
if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
bb_perror_msg("failed to send flush request");
return -1;
}
filter.flushp = 0;
return 0;
}
static int flush_update(void)
{
if (rtnl_send(G_filter.rth, G_filter.flushb, G_filter.flushp) < 0) {
bb_perror_msg("can't send flush request");
return -1;
}
G_filter.flushp = 0;
return 0;
}
int FAST_FUNC xrtnl_wilddump_request(struct rtnl_handle *rth, int family, int type)
{
struct {
struct nlmsghdr nlh;
struct rtgenmsg g;
} req;
req.nlh.nlmsg_len = sizeof(req);
req.nlh.nlmsg_type = type;
req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
req.nlh.nlmsg_pid = 0;
req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
req.g.rtgen_family = family;
return rtnl_send(rth, (void*)&req, sizeof(req));
}
static int iplink_have_newlink(void)
{
struct {
struct nlmsghdr n;
struct ifinfomsg i;
char buf[1024];
} req = {
.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
.n.nlmsg_type = RTM_NEWLINK,
.i.ifi_family = AF_UNSPEC,
};
if (have_rtnl_newlink < 0) {
if (rtnl_send(&rth, &req.n, req.n.nlmsg_len) < 0) {
perror("request send failed");
exit(1);
}
rtnl_listen(&rth, accept_msg, NULL);
}
return have_rtnl_newlink;
}
#else /* IPLINK_IOCTL_COMPAT */
static int iplink_have_newlink(void)
{
return 1;
}
#endif /* ! IPLINK_IOCTL_COMPAT */
static int nl_get_ll_addr_len(unsigned int dev_index)
{
int len;
struct iplink_req req = {
.n = {
.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
.nlmsg_type = RTM_GETLINK,
.nlmsg_flags = NLM_F_REQUEST
},
.i = {
.ifi_family = preferred_family,
.ifi_index = dev_index,
}
};
static int iplink_have_newlink(void)
{
struct {
struct nlmsghdr n;
struct ifinfomsg i;
char buf[1024];
} req;
if (have_rtnl_newlink < 0) {
memset(&req, 0, sizeof(req));
req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
req.n.nlmsg_flags = NLM_F_REQUEST|NLM_F_ACK;
req.n.nlmsg_type = RTM_NEWLINK;
req.i.ifi_family = AF_UNSPEC;
rtnl_send(&rth, &req.n, req.n.nlmsg_len);
rtnl_listen(&rth, accept_msg, NULL);
}
return have_rtnl_newlink;
}
static int get_tunnel(struct l2tp_data *p)
{
GENL_REQUEST(req, 1024, genl_family, 0, L2TP_GENL_VERSION,
L2TP_CMD_TUNNEL_GET,
NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST);
req.n.nlmsg_seq = genl_rth.dump = ++genl_rth.seq;
if (p->config.tunnel_id)
addattr32(&req.n, 1024, L2TP_ATTR_CONN_ID, p->config.tunnel_id);
if (rtnl_send(&genl_rth, &req, req.n.nlmsg_len) < 0)
return -2;
if (rtnl_dump_filter(&genl_rth, tunnel_nlmsg, p) < 0) {
fprintf(stderr, "Dump terminated\n");
exit(1);
}
return 0;
}
int mpls_list(int cmd,int argc, char **argv)
{
struct genlmsghdr *ghdr;
struct rtnl_handle rth;
struct {
struct nlmsghdr n;
char buf[4096];
} req;
if (rtnl_open_byproto(&rth, 0, NETLINK_GENERIC) < 0) {
fprintf (stderr, "Error opening nl socket\n");
//exit(-1);
return -1;
}
memset(&req, 0, sizeof(req));
req.n.nlmsg_len = NLMSG_LENGTH(GENL_HDRLEN);
req.n.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
req.n.nlmsg_type = PF_MPLS;
req.n.nlmsg_seq = rth.dump = ++rth.seq;
ghdr = NLMSG_DATA(&req.n);
ghdr->cmd = cmd;
if (rtnl_send(&rth, (const char *)&req.n, req.n.nlmsg_len) < 0) {
perror("Cannot send dump request");
//exit(1);
return 1;
}
if (rtnl_dump_filter(&rth, print_mpls, stdout, NULL, NULL) < 0) {
fprintf(stderr, "Dump terminated\n");
//exit(1);
return 1;
}
rtnl_close(&rth);
return 0;
}
static int do_list(int argc, char **argv)
{
ILA_REQUEST(req, 1024, ILA_CMD_GET, NLM_F_REQUEST | NLM_F_DUMP);
if (argc > 0) {
fprintf(stderr, "\"ip ila show\" does not take "
"any arguments.\n");
return -1;
}
if (rtnl_send(&genl_rth, (void *)&req, req.n.nlmsg_len) < 0) {
perror("Cannot send dump request");
exit(1);
}
if (rtnl_dump_filter(&genl_rth, print_ila_mapping, stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
return 1;
}
return 0;
}
int count_neigh(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
{
struct ndmsg *r = NLMSG_DATA(n);
if (filter.flushb && n->nlmsg_type != RTM_NEWNEIGH)
return 0;
if (filter.family && filter.family != r->ndm_family)
return 0;
if (filter.index && filter.index != r->ndm_ifindex)
return 0;
if (!(filter.state & r->ndm_state) &&
(r->ndm_state || !(filter.state & 0x100)) &&
(r->ndm_family != AF_DECnet))
return 0;
if (filter.flushb) {
struct nlmsghdr *fn;
if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0)
return -1;
filter.flushp = 0;
}
fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
memcpy(fn, n, n->nlmsg_len);
fn->nlmsg_type = RTM_DELNEIGH;
fn->nlmsg_flags = NLM_F_REQUEST;
fn->nlmsg_seq = ++filter.rth->seq;
filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
filter.flushed++;
}
return 0;
}
int respond_to_kernel(int ifindex, __u32 addr, char *lla, int llalen)
{
struct {
struct nlmsghdr n;
struct ndmsg ndm;
char buf[256];
} req;
memset(&req.n, 0, sizeof(req.n));
memset(&req.ndm, 0, sizeof(req.ndm));
req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg));
req.n.nlmsg_flags = NLM_F_REQUEST;
req.n.nlmsg_type = RTM_NEWNEIGH;
req.ndm.ndm_family = AF_INET;
req.ndm.ndm_state = NUD_STALE;
req.ndm.ndm_ifindex = ifindex;
req.ndm.ndm_type = RTN_UNICAST;
addattr_l(&req.n, sizeof(req), NDA_DST, &addr, 4);
addattr_l(&req.n, sizeof(req), NDA_LLADDR, lla, llalen);
return rtnl_send(&rth, (char*)&req, req.n.nlmsg_len) <= 0;
}
static int do_dump(int ifindex)
{
MACSEC_GENL_REQ(req, MACSEC_BUFLEN, MACSEC_CMD_GET_TXSC,
NLM_F_REQUEST | NLM_F_DUMP);
memset(&filter, 0, sizeof(filter));
filter.ifindex = ifindex;
req.n.nlmsg_seq = genl_rth.dump = ++genl_rth.seq;
if (rtnl_send(&genl_rth, &req, req.n.nlmsg_len) < 0) {
perror("Failed to send dump request");
exit(1);
}
new_json_obj(json);
if (rtnl_dump_filter(&genl_rth, process, stdout) < 0) {
delete_json_obj();
fprintf(stderr, "Dump terminated\n");
exit(1);
}
delete_json_obj();
return 0;
}
static int send_probe(int ifindex, __u32 addr)
{
struct ifreq ifr = { .ifr_ifindex = ifindex };
struct sockaddr_in dst = {
.sin_family = AF_INET,
.sin_port = htons(1025),
.sin_addr.s_addr = addr,
};
socklen_t len;
unsigned char buf[256];
struct arphdr *ah = (struct arphdr *)buf;
unsigned char *p = (unsigned char *)(ah+1);
struct sockaddr_ll sll = {
.sll_family = AF_PACKET,
.sll_ifindex = ifindex,
.sll_protocol = htons(ETH_P_ARP),
};
if (ioctl(udp_sock, SIOCGIFNAME, &ifr))
return -1;
if (ioctl(udp_sock, SIOCGIFHWADDR, &ifr))
return -1;
if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER)
return -1;
if (setsockopt(udp_sock, SOL_SOCKET, SO_BINDTODEVICE, ifr.ifr_name, strlen(ifr.ifr_name)+1) < 0)
return -1;
if (connect(udp_sock, (struct sockaddr *)&dst, sizeof(dst)) < 0)
return -1;
len = sizeof(dst);
if (getsockname(udp_sock, (struct sockaddr *)&dst, &len) < 0)
return -1;
ah->ar_hrd = htons(ifr.ifr_hwaddr.sa_family);
ah->ar_pro = htons(ETH_P_IP);
ah->ar_hln = 6;
ah->ar_pln = 4;
ah->ar_op = htons(ARPOP_REQUEST);
memcpy(p, ifr.ifr_hwaddr.sa_data, ah->ar_hln);
p += ah->ar_hln;
memcpy(p, &dst.sin_addr, 4);
p += 4;
memset(sll.sll_addr, 0xFF, sizeof(sll.sll_addr));
memcpy(p, &sll.sll_addr, ah->ar_hln);
p += ah->ar_hln;
memcpy(p, &addr, 4);
p += 4;
if (sendto(pset[0].fd, buf, p-buf, 0, (struct sockaddr *)&sll, sizeof(sll)) < 0)
return -1;
stats.probes_sent++;
return 0;
}
/* Be very tough on sending probes: 1 per second with burst of 3. */
static int queue_active_probe(int ifindex, __u32 addr)
{
static struct timeval prev;
static int buckets;
struct timeval now;
gettimeofday(&now, NULL);
if (prev.tv_sec) {
int diff = (now.tv_sec-prev.tv_sec)*1000+(now.tv_usec-prev.tv_usec)/1000;
buckets += diff;
} else {
buckets = broadcast_burst;
}
if (buckets > broadcast_burst)
buckets = broadcast_burst;
if (buckets >= broadcast_rate && !send_probe(ifindex, addr)) {
buckets -= broadcast_rate;
prev = now;
return 0;
}
stats.probes_suppressed++;
return -1;
}
static int respond_to_kernel(int ifindex, __u32 addr, char *lla, int llalen)
{
struct {
struct nlmsghdr n;
struct ndmsg ndm;
char buf[256];
} req = {
.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg)),
.n.nlmsg_flags = NLM_F_REQUEST,
.n.nlmsg_type = RTM_NEWNEIGH,
.ndm.ndm_family = AF_INET,
.ndm.ndm_state = NUD_STALE,
.ndm.ndm_ifindex = ifindex,
.ndm.ndm_type = RTN_UNICAST,
};
addattr_l(&req.n, sizeof(req), NDA_DST, &addr, 4);
addattr_l(&req.n, sizeof(req), NDA_LLADDR, lla, llalen);
return rtnl_send(&rth, &req, req.n.nlmsg_len) <= 0;
}
static void prepare_neg_entry(__u8 *ndata, __u32 stamp)
{
ndata[0] = 0xFF;
ndata[1] = 0;
ndata[2] = stamp>>24;
ndata[3] = stamp>>16;
ndata[4] = stamp>>8;
ndata[5] = stamp;
}
static int do_one_request(struct nlmsghdr *n)
{
struct ndmsg *ndm = NLMSG_DATA(n);
int len = n->nlmsg_len;
struct rtattr *tb[NDA_MAX+1];
struct dbkey key;
DBT dbkey, dbdat;
int do_acct = 0;
if (n->nlmsg_type == NLMSG_DONE) {
dbase->sync(dbase, 0);
/* Now we have at least mirror of kernel db, so that
* may start real resolution.
*/
do_sysctl_adjustments();
return 0;
}
if (n->nlmsg_type != RTM_GETNEIGH && n->nlmsg_type != RTM_NEWNEIGH)
return 0;
len -= NLMSG_LENGTH(sizeof(*ndm));
if (len < 0)
return -1;
if (ndm->ndm_family != AF_INET ||
(ifnum && !handle_if(ndm->ndm_ifindex)) ||
ndm->ndm_flags ||
ndm->ndm_type != RTN_UNICAST ||
!(ndm->ndm_state&~NUD_NOARP))
return 0;
parse_rtattr(tb, NDA_MAX, NDA_RTA(ndm), len);
if (!tb[NDA_DST])
return 0;
key.iface = ndm->ndm_ifindex;
memcpy(&key.addr, RTA_DATA(tb[NDA_DST]), 4);
dbkey.data = &key;
dbkey.size = sizeof(key);
if (dbase->get(dbase, &dbkey, &dbdat, 0) != 0) {
dbdat.data = 0;
dbdat.size = 0;
}
if (n->nlmsg_type == RTM_GETNEIGH) {
if (!(n->nlmsg_flags&NLM_F_REQUEST))
return 0;
if (!(ndm->ndm_state&(NUD_PROBE|NUD_INCOMPLETE))) {
stats.app_bad++;
return 0;
}
if (ndm->ndm_state&NUD_PROBE) {
/* If we get this, kernel still has some valid
* address, but unicast probing failed and host
* is either dead or changed its mac address.
* Kernel is going to initiate broadcast resolution.
* OK, we invalidate our information as well.
*/
if (dbdat.data && !IS_NEG(dbdat.data))
stats.app_neg++;
dbase->del(dbase, &dbkey, 0);
} else {
/* If we get this kernel does not have any information.
* If we have something tell this to kernel. */
stats.app_recv++;
if (dbdat.data && !IS_NEG(dbdat.data)) {
stats.app_success++;
respond_to_kernel(key.iface, key.addr, dbdat.data, dbdat.size);
return 0;
}
/* Sheeit! We have nothing to tell. */
/* If we have recent negative entry, be silent. */
if (dbdat.data && NEG_VALID(dbdat.data)) {
if (NEG_CNT(dbdat.data) >= active_probing) {
stats.app_suppressed++;
return 0;
}
do_acct = 1;
}
}
if (active_probing &&
queue_active_probe(ndm->ndm_ifindex, key.addr) == 0 &&
do_acct) {
NEG_CNT(dbdat.data)++;
dbase->put(dbase, &dbkey, &dbdat, 0);
}
} else if (n->nlmsg_type == RTM_NEWNEIGH) {
if (n->nlmsg_flags&NLM_F_REQUEST)
return 0;
if (ndm->ndm_state&NUD_FAILED) {
/* Kernel was not able to resolve. Host is dead.
* Create negative entry if it is not present
* or renew it if it is too old. */
if (!dbdat.data ||
!IS_NEG(dbdat.data) ||
!NEG_VALID(dbdat.data)) {
__u8 ndata[6];
stats.kern_neg++;
prepare_neg_entry(ndata, time(NULL));
dbdat.data = ndata;
dbdat.size = sizeof(ndata);
dbase->put(dbase, &dbkey, &dbdat, 0);
}
} else if (tb[NDA_LLADDR]) {
if (dbdat.data && !IS_NEG(dbdat.data)) {
if (memcmp(RTA_DATA(tb[NDA_LLADDR]), dbdat.data, dbdat.size) == 0)
return 0;
stats.kern_change++;
} else {
stats.kern_new++;
}
dbdat.data = RTA_DATA(tb[NDA_LLADDR]);
dbdat.size = RTA_PAYLOAD(tb[NDA_LLADDR]);
dbase->put(dbase, &dbkey, &dbdat, 0);
}
}
return 0;
}
static void load_initial_table(void)
{
if (rtnl_wilddump_request(&rth, AF_INET, RTM_GETNEIGH) < 0) {
perror("dump request failed");
exit(1);
}
}
static void get_kern_msg(void)
{
int status;
struct nlmsghdr *h;
struct sockaddr_nl nladdr = {};
struct iovec iov;
char buf[8192];
struct msghdr msg = {
(void *)&nladdr, sizeof(nladdr),
&iov, 1,
NULL, 0,
0
};
iov.iov_base = buf;
iov.iov_len = sizeof(buf);
status = recvmsg(rth.fd, &msg, MSG_DONTWAIT);
if (status <= 0)
return;
if (msg.msg_namelen != sizeof(nladdr))
return;
if (nladdr.nl_pid)
return;
for (h = (struct nlmsghdr *)buf; status >= sizeof(*h); ) {
int len = h->nlmsg_len;
int l = len - sizeof(*h);
if (l < 0 || len > status)
return;
if (do_one_request(h) < 0)
return;
status -= NLMSG_ALIGN(len);
h = (struct nlmsghdr *)((char *)h + NLMSG_ALIGN(len));
}
}
static int xfrm_policy_list_or_deleteall(int argc, char **argv, int deleteall)
{
char *selp = NULL;
struct rtnl_handle rth;
if (argc > 0)
filter.use = 1;
filter.xpinfo.sel.family = preferred_family;
while (argc > 0) {
if (strcmp(*argv, "dir") == 0) {
NEXT_ARG();
xfrm_policy_dir_parse(&filter.xpinfo.dir, &argc, &argv);
filter.dir_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "index") == 0) {
NEXT_ARG();
if (get_u32(&filter.xpinfo.index, *argv, 0))
invarg("\"INDEX\" is invalid", *argv);
filter.index_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "ptype") == 0) {
NEXT_ARG();
xfrm_policy_ptype_parse(&filter.ptype, &argc, &argv);
filter.ptype_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "action") == 0) {
NEXT_ARG();
if (strcmp(*argv, "allow") == 0)
filter.xpinfo.action = XFRM_POLICY_ALLOW;
else if (strcmp(*argv, "block") == 0)
filter.xpinfo.action = XFRM_POLICY_BLOCK;
else
invarg("\"ACTION\" is invalid\n", *argv);
filter.action_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "priority") == 0) {
NEXT_ARG();
if (get_u32(&filter.xpinfo.priority, *argv, 0))
invarg("\"PRIORITY\" is invalid", *argv);
filter.priority_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "flag") == 0) {
NEXT_ARG();
xfrm_policy_flag_parse(&filter.xpinfo.flags, &argc,
&argv);
filter.policy_flags_mask = XFRM_FILTER_MASK_FULL;
} else {
if (selp)
invarg("unknown", *argv);
selp = *argv;
xfrm_selector_parse(&filter.xpinfo.sel, &argc, &argv);
if (preferred_family == AF_UNSPEC)
preferred_family = filter.xpinfo.sel.family;
}
argc--; argv++;
}
if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
exit(1);
if (deleteall) {
struct xfrm_buffer xb;
char buf[NLMSG_DELETEALL_BUF_SIZE];
int i;
xb.buf = buf;
xb.size = sizeof(buf);
xb.rth = &rth;
for (i = 0; ; i++) {
xb.offset = 0;
xb.nlmsg_count = 0;
if (show_stats > 1)
fprintf(stderr, "Delete-all round = %d\n", i);
if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETPOLICY) < 0) {
perror("Cannot send dump request");
exit(1);
}
if (rtnl_dump_filter(&rth, xfrm_policy_keep, &xb, NULL, NULL) < 0) {
fprintf(stderr, "Delete-all terminated\n");
exit(1);
}
if (xb.nlmsg_count == 0) {
if (show_stats > 1)
fprintf(stderr, "Delete-all completed\n");
break;
}
if (rtnl_send(&rth, xb.buf, xb.offset) < 0) {
perror("Failed to send delete-all request\n");
exit(1);
}
if (show_stats > 1)
fprintf(stderr, "Delete-all nlmsg count = %d\n", xb.nlmsg_count);
xb.offset = 0;
xb.nlmsg_count = 0;
}
} else {
if (rtnl_wilddump_request(&rth, preferred_family, XFRM_MSG_GETPOLICY) < 0) {
perror("Cannot send dump request");
exit(1);
}
if (rtnl_dump_filter(&rth, xfrm_policy_print, stdout, NULL, NULL) < 0) {
fprintf(stderr, "Dump terminated\n");
exit(1);
}
}
rtnl_close(&rth);
exit(0);
}
static int do_show(int argc, char **argv)
{
struct {
struct nlmsghdr n;
struct netconfmsg ncm;
char buf[1024];
} req = {
.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct netconfmsg)),
.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
.n.nlmsg_type = RTM_GETNETCONF,
};
ipnetconf_reset_filter(0);
filter.family = preferred_family;
while (argc > 0) {
if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
filter.ifindex = ll_name_to_index(*argv);
if (filter.ifindex <= 0) {
fprintf(stderr, "Device \"%s\" does not exist.\n",
*argv);
return -1;
}
}
argv++; argc--;
}
ll_init_map(&rth);
if (filter.ifindex && filter.family != AF_UNSPEC) {
req.ncm.ncm_family = filter.family;
addattr_l(&req.n, sizeof(req), NETCONFA_IFINDEX,
&filter.ifindex, sizeof(filter.ifindex));
if (rtnl_send(&rth, &req.n, req.n.nlmsg_len) < 0) {
perror("Can not send request");
exit(1);
}
rtnl_listen(&rth, print_netconf, stdout);
} else {
rth.flags = RTNL_HANDLE_F_SUPPRESS_NLERR;
dump:
if (rtnl_wilddump_request(&rth, filter.family, RTM_GETNETCONF) < 0) {
perror("Cannot send dump request");
exit(1);
}
if (rtnl_dump_filter(&rth, print_netconf2, stdout) < 0) {
/* kernel does not support netconf dump on AF_UNSPEC;
* fall back to requesting by family
*/
if (errno == EOPNOTSUPP &&
filter.family == AF_UNSPEC) {
filter.family = AF_INET;
goto dump;
}
perror("RTNETLINK answers");
fprintf(stderr, "Dump terminated\n");
exit(1);
}
if (preferred_family == AF_UNSPEC && filter.family == AF_INET) {
preferred_family = AF_INET6;
filter.family = AF_INET6;
goto dump;
}
}
return 0;
}
int do_ipnetconf(int argc, char **argv)
{
if (argc > 0) {
if (matches(*argv, "show") == 0 ||
matches(*argv, "lst") == 0 ||
matches(*argv, "list") == 0)
return do_show(argc-1, argv+1);
if (matches(*argv, "help") == 0)
usage();
} else
return do_show(0, NULL);
fprintf(stderr, "Command \"%s\" is unknown, try \"ip netconf help\".\n", *argv);
exit(-1);
}
static int xfrm_policy_list_or_deleteall(int argc, char **argv, int deleteall)
{
char *selp = NULL;
struct rtnl_handle rth;
if (argc > 0)
filter.use = 1;
filter.xpinfo.sel.family = preferred_family;
while (argc > 0) {
if (strcmp(*argv, "dir") == 0) {
NEXT_ARG();
xfrm_policy_dir_parse(&filter.xpinfo.dir, &argc, &argv);
filter.dir_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "index") == 0) {
NEXT_ARG();
if (get_u32(&filter.xpinfo.index, *argv, 0))
invarg("INDEX value is invalid", *argv);
filter.index_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "ptype") == 0) {
NEXT_ARG();
xfrm_policy_ptype_parse(&filter.ptype, &argc, &argv);
filter.ptype_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "action") == 0) {
NEXT_ARG();
if (strcmp(*argv, "allow") == 0)
filter.xpinfo.action = XFRM_POLICY_ALLOW;
else if (strcmp(*argv, "block") == 0)
filter.xpinfo.action = XFRM_POLICY_BLOCK;
else
invarg("ACTION value is invalid\n", *argv);
filter.action_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "priority") == 0) {
NEXT_ARG();
if (get_u32(&filter.xpinfo.priority, *argv, 0))
invarg("PRIORITY value is invalid", *argv);
filter.priority_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "flag") == 0) {
NEXT_ARG();
xfrm_policy_flag_parse(&filter.xpinfo.flags, &argc,
&argv);
filter.policy_flags_mask = XFRM_FILTER_MASK_FULL;
} else {
if (selp)
invarg("unknown", *argv);
selp = *argv;
xfrm_selector_parse(&filter.xpinfo.sel, &argc, &argv);
if (preferred_family == AF_UNSPEC)
preferred_family = filter.xpinfo.sel.family;
}
argc--; argv++;
}
if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0)
exit(1);
if (deleteall) {
struct xfrm_buffer xb;
char buf[NLMSG_DELETEALL_BUF_SIZE];
int i;
xb.buf = buf;
xb.size = sizeof(buf);
xb.rth = &rth;
for (i = 0; ; i++) {
struct {
struct nlmsghdr n;
char buf[NLMSG_BUF_SIZE];
} req = {
.n.nlmsg_len = NLMSG_HDRLEN,
.n.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
.n.nlmsg_type = XFRM_MSG_GETPOLICY,
.n.nlmsg_seq = rth.dump = ++rth.seq,
};
xb.offset = 0;
xb.nlmsg_count = 0;
if (show_stats > 1)
fprintf(stderr, "Delete-all round = %d\n", i);
if (rtnl_send(&rth, (void *)&req, req.n.nlmsg_len) < 0) {
perror("Cannot send dump request");
exit(1);
}
if (rtnl_dump_filter(&rth, xfrm_policy_keep, &xb) < 0) {
fprintf(stderr, "Delete-all terminated\n");
exit(1);
}
if (xb.nlmsg_count == 0) {
if (show_stats > 1)
fprintf(stderr, "Delete-all completed\n");
break;
}
if (rtnl_send_check(&rth, xb.buf, xb.offset) < 0) {
perror("Failed to send delete-all request");
exit(1);
}
if (show_stats > 1)
fprintf(stderr, "Delete-all nlmsg count = %d\n", xb.nlmsg_count);
xb.offset = 0;
xb.nlmsg_count = 0;
}
} else {
struct {
struct nlmsghdr n;
char buf[NLMSG_BUF_SIZE];
} req = {
.n.nlmsg_len = NLMSG_HDRLEN,
.n.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
.n.nlmsg_type = XFRM_MSG_GETPOLICY,
.n.nlmsg_seq = rth.dump = ++rth.seq,
};
if (rtnl_send(&rth, (void *)&req, req.n.nlmsg_len) < 0) {
perror("Cannot send dump request");
exit(1);
}
if (rtnl_dump_filter(&rth, xfrm_policy_print, stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
exit(1);
}
}
rtnl_close(&rth);
exit(0);
}
static int print_spdinfo( struct nlmsghdr *n, void *arg)
{
FILE *fp = (FILE*)arg;
__u32 *f = NLMSG_DATA(n);
struct rtattr * tb[XFRMA_SPD_MAX+1];
struct rtattr * rta;
int len = n->nlmsg_len;
len -= NLMSG_LENGTH(sizeof(__u32));
if (len < 0) {
fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
return -1;
}
rta = XFRMSAPD_RTA(f);
parse_rtattr(tb, XFRMA_SPD_MAX, rta, len);
fprintf(fp,"\t SPD");
if (tb[XFRMA_SPD_INFO]) {
struct xfrmu_spdinfo *si;
if (RTA_PAYLOAD(tb[XFRMA_SPD_INFO]) < sizeof(*si)) {
fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
return -1;
}
si = RTA_DATA(tb[XFRMA_SPD_INFO]);
fprintf(fp," IN %d", si->incnt);
fprintf(fp," OUT %d", si->outcnt);
fprintf(fp," FWD %d", si->fwdcnt);
if (show_stats) {
fprintf(fp," (Sock:");
fprintf(fp," IN %d", si->inscnt);
fprintf(fp," OUT %d", si->outscnt);
fprintf(fp," FWD %d", si->fwdscnt);
fprintf(fp,")");
}
fprintf(fp, "%s", _SL_);
}
if (show_stats > 1) {
struct xfrmu_spdhinfo *sh;
if (tb[XFRMA_SPD_HINFO]) {
if (RTA_PAYLOAD(tb[XFRMA_SPD_HINFO]) < sizeof(*sh)) {
fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
return -1;
}
sh = RTA_DATA(tb[XFRMA_SPD_HINFO]);
fprintf(fp,"\t SPD buckets:");
fprintf(fp," count %d", sh->spdhcnt);
fprintf(fp," Max %d", sh->spdhmcnt);
fprintf(fp, "%s", _SL_);
}
if (tb[XFRMA_SPD_IPV4_HTHRESH]) {
struct xfrmu_spdhthresh *th;
if (RTA_PAYLOAD(tb[XFRMA_SPD_IPV4_HTHRESH]) < sizeof(*th)) {
fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
return -1;
}
th = RTA_DATA(tb[XFRMA_SPD_IPV4_HTHRESH]);
fprintf(fp,"\t SPD IPv4 thresholds:");
fprintf(fp," local %d", th->lbits);
fprintf(fp," remote %d", th->rbits);
fprintf(fp, "%s", _SL_);
}
if (tb[XFRMA_SPD_IPV6_HTHRESH]) {
struct xfrmu_spdhthresh *th;
if (RTA_PAYLOAD(tb[XFRMA_SPD_IPV6_HTHRESH]) < sizeof(*th)) {
fprintf(stderr, "SPDinfo: Wrong len %d\n", len);
return -1;
}
th = RTA_DATA(tb[XFRMA_SPD_IPV6_HTHRESH]);
fprintf(fp,"\t SPD IPv6 thresholds:");
fprintf(fp," local %d", th->lbits);
fprintf(fp," remote %d", th->rbits);
fprintf(fp, "%s", _SL_);
}
}
if (oneline)
fprintf(fp, "\n");
return 0;
}
static int tcpm_do_cmd(int cmd, int argc, char **argv)
{
TCPM_REQUEST(req, 1024, TCP_METRICS_CMD_GET, NLM_F_REQUEST);
int atype = -1, stype = -1;
int ack;
memset(&f, 0, sizeof(f));
f.daddr.bitlen = -1;
f.daddr.family = preferred_family;
f.saddr.bitlen = -1;
f.saddr.family = preferred_family;
switch (preferred_family) {
case AF_UNSPEC:
case AF_INET:
case AF_INET6:
break;
default:
fprintf(stderr, "Unsupported protocol family: %d\n", preferred_family);
return -1;
}
for (; argc > 0; argc--, argv++) {
if (strcmp(*argv, "src") == 0 ||
strcmp(*argv, "source") == 0) {
char *who = *argv;
NEXT_ARG();
if (matches(*argv, "help") == 0)
usage();
if (f.saddr.bitlen >= 0)
duparg2(who, *argv);
get_prefix(&f.saddr, *argv, preferred_family);
if (f.saddr.bytelen && f.saddr.bytelen * 8 == f.saddr.bitlen) {
if (f.saddr.family == AF_INET)
stype = TCP_METRICS_ATTR_SADDR_IPV4;
else if (f.saddr.family == AF_INET6)
stype = TCP_METRICS_ATTR_SADDR_IPV6;
}
if (stype < 0) {
fprintf(stderr, "Error: a specific IP address is expected rather than \"%s\"\n",
*argv);
return -1;
}
} else {
char *who = "address";
if (strcmp(*argv, "addr") == 0 ||
strcmp(*argv, "address") == 0) {
who = *argv;
NEXT_ARG();
}
if (matches(*argv, "help") == 0)
usage();
if (f.daddr.bitlen >= 0)
duparg2(who, *argv);
get_prefix(&f.daddr, *argv, preferred_family);
if (f.daddr.bytelen && f.daddr.bytelen * 8 == f.daddr.bitlen) {
if (f.daddr.family == AF_INET)
atype = TCP_METRICS_ATTR_ADDR_IPV4;
else if (f.daddr.family == AF_INET6)
atype = TCP_METRICS_ATTR_ADDR_IPV6;
}
if ((CMD_DEL & cmd) && atype < 0) {
fprintf(stderr, "Error: a specific IP address is expected rather than \"%s\"\n",
*argv);
return -1;
}
}
argc--; argv++;
}
if (cmd == CMD_DEL && atype < 0)
missarg("address");
/* flush for exact address ? Single del */
if (cmd == CMD_FLUSH && atype >= 0)
cmd = CMD_DEL;
/* flush for all addresses ? Single del without address */
if (cmd == CMD_FLUSH && f.daddr.bitlen <= 0 &&
f.saddr.bitlen <= 0 && preferred_family == AF_UNSPEC) {
cmd = CMD_DEL;
req.g.cmd = TCP_METRICS_CMD_DEL;
ack = 1;
} else if (cmd == CMD_DEL) {
req.g.cmd = TCP_METRICS_CMD_DEL;
ack = 1;
} else { /* CMD_FLUSH, CMD_LIST */
ack = 0;
}
if (genl_init_handle(&grth, TCP_METRICS_GENL_NAME, &genl_family))
exit(1);
req.n.nlmsg_type = genl_family;
if (!(cmd & CMD_FLUSH) && (atype >= 0 || (cmd & CMD_DEL))) {
if (ack)
req.n.nlmsg_flags |= NLM_F_ACK;
if (atype >= 0)
addattr_l(&req.n, sizeof(req), atype, &f.daddr.data,
f.daddr.bytelen);
if (stype >= 0)
addattr_l(&req.n, sizeof(req), stype, &f.saddr.data,
f.saddr.bytelen);
} else {
req.n.nlmsg_flags |= NLM_F_DUMP;
}
f.cmd = cmd;
if (cmd & CMD_FLUSH) {
int round = 0;
char flushb[4096-512];
f.flushb = flushb;
f.flushp = 0;
f.flushe = sizeof(flushb);
for (;;) {
req.n.nlmsg_seq = grth.dump = ++grth.seq;
if (rtnl_send(&grth, &req, req.n.nlmsg_len) < 0) {
perror("Failed to send flush request");
exit(1);
}
f.flushed = 0;
if (rtnl_dump_filter(&grth, process_msg, stdout) < 0) {
fprintf(stderr, "Flush terminated\n");
exit(1);
}
if (f.flushed == 0) {
if (round == 0) {
fprintf(stderr, "Nothing to flush.\n");
} else if (show_stats)
printf("*** Flush is complete after %d round%s ***\n",
round, round > 1 ? "s" : "");
fflush(stdout);
return 0;
}
round++;
if (flush_update() < 0)
exit(1);
if (show_stats) {
printf("\n*** Round %d, deleting %d entries ***\n",
round, f.flushed);
fflush(stdout);
}
}
return 0;
}
if (ack) {
if (rtnl_talk(&grth, &req.n, NULL, 0) < 0)
return -2;
} else if (atype >= 0) {
if (rtnl_talk(&grth, &req.n, &req.n, sizeof(req)) < 0)
return -2;
if (process_msg(NULL, &req.n, stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
exit(1);
}
} else {
req.n.nlmsg_seq = grth.dump = ++grth.seq;
if (rtnl_send(&grth, &req, req.n.nlmsg_len) < 0) {
perror("Failed to send dump request");
exit(1);
}
if (rtnl_dump_filter(&grth, process_msg, stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
exit(1);
}
}
return 0;
}
static int ctrl_list(int cmd, int argc, char **argv)
{
struct rtnl_handle rth;
struct nlmsghdr *nlh;
struct genlmsghdr *ghdr;
int ret = -1;
char d[GENL_NAMSIZ];
struct {
struct nlmsghdr n;
char buf[4096];
} req;
memset(&req, 0, sizeof(req));
nlh = &req.n;
nlh->nlmsg_len = NLMSG_LENGTH(GENL_HDRLEN);
nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
nlh->nlmsg_type = GENL_ID_CTRL;
ghdr = NLMSG_DATA(&req.n);
ghdr->cmd = CTRL_CMD_GETFAMILY;
if (rtnl_open_byproto(&rth, 0, NETLINK_GENERIC) < 0) {
fprintf(stderr, "Cannot open generic netlink socket\n");
exit(1);
}
if (cmd == CTRL_CMD_GETFAMILY) {
if (argc != 2) {
fprintf(stderr, "Wrong number of params\n");
return -1;
}
if (matches(*argv, "name") == 0) {
NEXT_ARG();
strncpy(d, *argv, sizeof (d) - 1);
addattr_l(nlh, 128, CTRL_ATTR_FAMILY_NAME,
d, strlen(d) + 1);
} else if (matches(*argv, "id") == 0) {
__u16 id;
NEXT_ARG();
if (get_u16(&id, *argv, 0)) {
fprintf(stderr, "Illegal \"id\"\n");
goto ctrl_done;
}
addattr_l(nlh, 128, CTRL_ATTR_FAMILY_ID, &id, 2);
} else {
fprintf(stderr, "Wrong params\n");
goto ctrl_done;
}
if (rtnl_talk(&rth, nlh, nlh, sizeof(req)) < 0) {
fprintf(stderr, "Error talking to the kernel\n");
goto ctrl_done;
}
if (print_ctrl2(NULL, nlh, (void *) stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
goto ctrl_done;
}
}
if (cmd == CTRL_CMD_UNSPEC) {
nlh->nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
nlh->nlmsg_seq = rth.dump = ++rth.seq;
if (rtnl_send(&rth, nlh, nlh->nlmsg_len) < 0) {
perror("Failed to send dump request\n");
goto ctrl_done;
}
rtnl_dump_filter(&rth, print_ctrl2, stdout);
}
ret = 0;
ctrl_done:
rtnl_close(&rth);
return ret;
}
static int seg6_do_cmd(void)
{
SEG6_REQUEST(req, 1024, opts.cmd, NLM_F_REQUEST);
int repl = 0, dump = 0;
if (genl_family < 0) {
if (rtnl_open_byproto(&grth, 0, NETLINK_GENERIC) < 0) {
fprintf(stderr, "Cannot open generic netlink socket\n");
exit(1);
}
genl_family = genl_resolve_family(&grth, SEG6_GENL_NAME);
if (genl_family < 0)
exit(1);
req.n.nlmsg_type = genl_family;
}
switch (opts.cmd) {
case SEG6_CMD_SETHMAC:
{
addattr32(&req.n, sizeof(req), SEG6_ATTR_HMACKEYID, opts.keyid);
addattr8(&req.n, sizeof(req), SEG6_ATTR_SECRETLEN,
strlen(opts.pass));
addattr8(&req.n, sizeof(req), SEG6_ATTR_ALGID, opts.alg_id);
if (strlen(opts.pass))
addattr_l(&req.n, sizeof(req), SEG6_ATTR_SECRET,
opts.pass, strlen(opts.pass));
break;
}
case SEG6_CMD_SET_TUNSRC:
addattr_l(&req.n, sizeof(req), SEG6_ATTR_DST, &opts.addr,
sizeof(struct in6_addr));
break;
case SEG6_CMD_DUMPHMAC:
dump = 1;
break;
case SEG6_CMD_GET_TUNSRC:
repl = 1;
break;
}
if (!repl && !dump) {
if (rtnl_talk(&grth, &req.n, NULL, 0) < 0)
return -1;
} else if (repl) {
if (rtnl_talk(&grth, &req.n, &req.n, sizeof(req)) < 0)
return -2;
if (process_msg(NULL, &req.n, stdout) < 0) {
fprintf(stderr, "Error parsing reply\n");
exit(1);
}
} else {
req.n.nlmsg_flags |= NLM_F_DUMP;
req.n.nlmsg_seq = grth.dump = ++grth.seq;
if (rtnl_send(&grth, &req, req.n.nlmsg_len) < 0) {
perror("Failed to send dump request");
exit(1);
}
if (rtnl_dump_filter(&grth, process_msg, stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
exit(1);
}
}
return 0;
}
static int ctrl_list(int cmd, int argc, char **argv)
{
struct rtnl_handle rth;
int ret = -1;
char d[GENL_NAMSIZ];
struct {
struct nlmsghdr n;
struct genlmsghdr g;
char buf[4096];
} req = {
.n.nlmsg_len = NLMSG_LENGTH(GENL_HDRLEN),
.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
.n.nlmsg_type = GENL_ID_CTRL,
.g.cmd = CTRL_CMD_GETFAMILY,
};
struct nlmsghdr *nlh = &req.n;
if (rtnl_open_byproto(&rth, 0, NETLINK_GENERIC) < 0) {
fprintf(stderr, "Cannot open generic netlink socket\n");
exit(1);
}
if (cmd == CTRL_CMD_GETFAMILY) {
if (argc != 2) {
fprintf(stderr, "Wrong number of params\n");
return -1;
}
if (matches(*argv, "name") == 0) {
NEXT_ARG();
strncpy(d, *argv, sizeof (d) - 1);
addattr_l(nlh, 128, CTRL_ATTR_FAMILY_NAME,
d, strlen(d) + 1);
} else if (matches(*argv, "id") == 0) {
__u16 id;
NEXT_ARG();
if (get_u16(&id, *argv, 0)) {
fprintf(stderr, "Illegal \"id\"\n");
goto ctrl_done;
}
addattr_l(nlh, 128, CTRL_ATTR_FAMILY_ID, &id, 2);
} else {
fprintf(stderr, "Wrong params\n");
goto ctrl_done;
}
if (rtnl_talk(&rth, nlh, nlh, sizeof(req)) < 0) {
fprintf(stderr, "Error talking to the kernel\n");
goto ctrl_done;
}
if (print_ctrl2(NULL, nlh, (void *) stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
goto ctrl_done;
}
}
if (cmd == CTRL_CMD_UNSPEC) {
nlh->nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
nlh->nlmsg_seq = rth.dump = ++rth.seq;
if (rtnl_send(&rth, nlh, nlh->nlmsg_len) < 0) {
perror("Failed to send dump request\n");
goto ctrl_done;
}
rtnl_dump_filter(&rth, print_ctrl2, stdout);
}
ret = 0;
ctrl_done:
rtnl_close(&rth);
return ret;
}
static int ctrl_listen(int argc, char **argv)
{
struct rtnl_handle rth;
if (rtnl_open_byproto(&rth, nl_mgrp(GENL_ID_CTRL), NETLINK_GENERIC) < 0) {
fprintf(stderr, "Canot open generic netlink socket\n");
return -1;
}
if (rtnl_listen(&rth, print_ctrl, (void *) stdout) < 0)
return -1;
return 0;
}
static int parse_ctrl(struct genl_util *a, int argc, char **argv)
{
argv++;
if (--argc <= 0) {
fprintf(stderr, "wrong controller params\n");
return -1;
}
if (matches(*argv, "monitor") == 0)
return ctrl_listen(argc-1, argv+1);
if (matches(*argv, "get") == 0)
return ctrl_list(CTRL_CMD_GETFAMILY, argc-1, argv+1);
if (matches(*argv, "list") == 0 ||
matches(*argv, "show") == 0 ||
matches(*argv, "lst") == 0)
return ctrl_list(CTRL_CMD_UNSPEC, argc-1, argv+1);
if (matches(*argv, "help") == 0)
return usage();
fprintf(stderr, "ctrl command \"%s\" is unknown, try \"ctrl help\".\n",
*argv);
return -1;
}
