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-rw-r--r--pimd/mtracebis_netlink.c732
1 files changed, 732 insertions, 0 deletions
diff --git a/pimd/mtracebis_netlink.c b/pimd/mtracebis_netlink.c
new file mode 100644
index 0000000..81e28f2
--- /dev/null
+++ b/pimd/mtracebis_netlink.c
@@ -0,0 +1,732 @@
+/*
+ * libnetlink.c RTnetlink service routines.
+ *
+ * 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>
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef __linux__
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <net/if_arp.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+#include <sys/uio.h>
+#include <assert.h>
+
+#include "mtracebis_netlink.h"
+
+int rcvbuf = 1024 * 1024;
+
+void rtnl_close(struct rtnl_handle *rth)
+{
+ if (rth->fd >= 0) {
+ close(rth->fd);
+ rth->fd = -1;
+ }
+}
+
+int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions,
+ int protocol)
+{
+ socklen_t addr_len;
+ int sndbuf = 32768;
+
+ memset(rth, 0, sizeof(*rth));
+
+ rth->fd = socket(AF_NETLINK, SOCK_RAW, protocol);
+ if (rth->fd < 0) {
+ perror("Cannot open netlink socket");
+ return -1;
+ }
+
+ if (setsockopt(rth->fd, SOL_SOCKET, SO_SNDBUF, &sndbuf, sizeof(sndbuf))
+ < 0) {
+ perror("SO_SNDBUF");
+ return -1;
+ }
+
+ if (setsockopt(rth->fd, SOL_SOCKET, SO_RCVBUF, &rcvbuf, sizeof(rcvbuf))
+ < 0) {
+ perror("SO_RCVBUF");
+ return -1;
+ }
+
+ memset(&rth->local, 0, sizeof(rth->local));
+ rth->local.nl_family = AF_NETLINK;
+ rth->local.nl_groups = subscriptions;
+
+ if (bind(rth->fd, (struct sockaddr *)&rth->local, sizeof(rth->local))
+ < 0) {
+ perror("Cannot bind netlink socket");
+ return -1;
+ }
+ addr_len = sizeof(rth->local);
+ if (getsockname(rth->fd, (struct sockaddr *)&rth->local, &addr_len)
+ < 0) {
+ perror("Cannot getsockname");
+ return -1;
+ }
+ if (addr_len != sizeof(rth->local)) {
+ fprintf(stderr, "Wrong address length %d\n", addr_len);
+ return -1;
+ }
+ if (rth->local.nl_family != AF_NETLINK) {
+ fprintf(stderr, "Wrong address family %d\n",
+ rth->local.nl_family);
+ return -1;
+ }
+ rth->seq = (uint32_t)time(NULL);
+ return 0;
+}
+
+int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions)
+{
+ return rtnl_open_byproto(rth, subscriptions, NETLINK_ROUTE);
+}
+
+int rtnl_wilddump_request(struct rtnl_handle *rth, int family, int type)
+{
+ struct {
+ struct nlmsghdr nlh;
+ struct rtgenmsg g;
+ } req;
+
+ memset(&req, 0, sizeof(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 send(rth->fd, (void *)&req, sizeof(req), 0);
+}
+
+int rtnl_send(struct rtnl_handle *rth, const char *buf, int len)
+{
+ return send(rth->fd, buf, len, 0);
+}
+
+int rtnl_send_check(struct rtnl_handle *rth, const char *buf, int len)
+{
+ struct nlmsghdr *h;
+ int status;
+ char resp[1024];
+
+ status = send(rth->fd, buf, len, 0);
+ if (status < 0)
+ return status;
+
+ /* Check for immediate errors */
+ status = recv(rth->fd, resp, sizeof(resp), MSG_DONTWAIT | MSG_PEEK);
+ if (status < 0) {
+ if (errno == EAGAIN)
+ return 0;
+ return -1;
+ }
+
+ for (h = (struct nlmsghdr *)resp; NLMSG_OK(h, (uint32_t)status);
+ h = NLMSG_NEXT(h, status)) {
+ if (h->nlmsg_type == NLMSG_ERROR) {
+ struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(h);
+ if (h->nlmsg_len
+ < NLMSG_LENGTH(sizeof(struct nlmsgerr)))
+ fprintf(stderr, "ERROR truncated\n");
+ else
+ errno = -err->error;
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len)
+{
+ struct nlmsghdr nlh;
+ struct sockaddr_nl nladdr;
+ struct iovec iov[2] = {{.iov_base = &nlh, .iov_len = sizeof(nlh)},
+ {.iov_base = req, .iov_len = len}};
+ struct msghdr msg = {
+ .msg_name = &nladdr,
+ .msg_namelen = sizeof(nladdr),
+ .msg_iov = iov,
+ .msg_iovlen = 2,
+ };
+
+ memset(&nladdr, 0, sizeof(nladdr));
+ nladdr.nl_family = AF_NETLINK;
+
+ nlh.nlmsg_len = NLMSG_LENGTH(len);
+ nlh.nlmsg_type = type;
+ nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST;
+ nlh.nlmsg_pid = 0;
+ nlh.nlmsg_seq = rth->dump = ++rth->seq;
+
+ return sendmsg(rth->fd, &msg, 0);
+}
+
+int rtnl_dump_filter_l(struct rtnl_handle *rth,
+ const struct rtnl_dump_filter_arg *arg)
+{
+ struct sockaddr_nl nladdr;
+ char buf[16384];
+ struct iovec iov = {
+ .iov_base = buf,
+ .iov_len = sizeof(buf),
+ };
+ struct msghdr msg = {
+ .msg_name = &nladdr,
+ .msg_namelen = sizeof(nladdr),
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
+ };
+
+ while (1) {
+ int status;
+ const struct rtnl_dump_filter_arg *a;
+ int found_done = 0;
+ int msglen = 0;
+
+ iov.iov_len = sizeof(buf);
+ status = recvmsg(rth->fd, &msg, 0);
+
+ if (status < 0) {
+ if (errno == EINTR || errno == EAGAIN)
+ continue;
+ fprintf(stderr, "netlink receive error %s (%d)\n",
+ strerror(errno), errno);
+ return -1;
+ }
+
+ if (status == 0) {
+ fprintf(stderr, "EOF on netlink\n");
+ return -1;
+ }
+
+ for (a = arg; a->filter; a++) {
+ struct nlmsghdr *h = (struct nlmsghdr *)iov.iov_base;
+ msglen = status;
+
+ while (NLMSG_OK(h, (uint32_t)msglen)) {
+ int err;
+
+ if (nladdr.nl_pid != 0
+ || h->nlmsg_pid != rth->local.nl_pid
+ || h->nlmsg_seq != rth->dump) {
+ if (a->junk) {
+ err = a->junk(&nladdr, h,
+ a->arg2);
+ if (err < 0)
+ return err;
+ }
+ goto skip_it;
+ }
+
+ if (h->nlmsg_type == NLMSG_DONE) {
+ found_done = 1;
+ break; /* process next filter */
+ }
+ if (h->nlmsg_type == NLMSG_ERROR) {
+ struct nlmsgerr *merr =
+ (struct nlmsgerr *)NLMSG_DATA(
+ h);
+ if (h->nlmsg_len
+ < NLMSG_LENGTH(sizeof(
+ struct nlmsgerr))) {
+ fprintf(stderr,
+ "ERROR truncated\n");
+ } else {
+ errno = -merr->error;
+ perror("RTNETLINK answers");
+ }
+ return -1;
+ }
+ err = a->filter(&nladdr, h, a->arg1);
+ if (err < 0)
+ return err;
+
+ skip_it:
+ h = NLMSG_NEXT(h, msglen);
+ }
+ }
+
+ if (found_done)
+ return 0;
+
+ if (msg.msg_flags & MSG_TRUNC) {
+ fprintf(stderr, "Message truncated\n");
+ continue;
+ }
+ if (msglen) {
+ fprintf(stderr, "!!!Remnant of size %d\n", msglen);
+ exit(1);
+ }
+ }
+}
+
+int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter, void *arg1,
+ rtnl_filter_t junk, void *arg2)
+{
+ const struct rtnl_dump_filter_arg a[2] = {
+ {.filter = filter, .arg1 = arg1, .junk = junk, .arg2 = arg2},
+ {.filter = NULL, .arg1 = NULL, .junk = NULL, .arg2 = NULL}};
+
+ return rtnl_dump_filter_l(rth, a);
+}
+
+int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
+ unsigned groups, struct nlmsghdr *answer, rtnl_filter_t junk,
+ void *jarg)
+{
+ int status;
+ unsigned seq;
+ struct nlmsghdr *h;
+ struct sockaddr_nl nladdr;
+ struct iovec iov = {.iov_base = (void *)n, .iov_len = n->nlmsg_len};
+ struct msghdr msg = {
+ .msg_name = &nladdr,
+ .msg_namelen = sizeof(nladdr),
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
+ };
+ char buf[16384];
+
+ memset(&nladdr, 0, sizeof(nladdr));
+ nladdr.nl_family = AF_NETLINK;
+ nladdr.nl_pid = peer;
+ nladdr.nl_groups = groups;
+
+ n->nlmsg_seq = seq = ++rtnl->seq;
+
+ if (answer == NULL)
+ n->nlmsg_flags |= NLM_F_ACK;
+
+ status = sendmsg(rtnl->fd, &msg, 0);
+
+ if (status < 0) {
+ perror("Cannot talk to rtnetlink");
+ return -1;
+ }
+
+ memset(buf, 0, sizeof(buf));
+
+ iov.iov_base = buf;
+
+ while (1) {
+ iov.iov_len = sizeof(buf);
+ status = recvmsg(rtnl->fd, &msg, 0);
+
+ if (status < 0) {
+ if (errno == EINTR || errno == EAGAIN)
+ continue;
+ fprintf(stderr, "netlink receive error %s (%d)\n",
+ strerror(errno), errno);
+ return -1;
+ }
+ if (status == 0) {
+ fprintf(stderr, "EOF on netlink\n");
+ return -1;
+ }
+ if (msg.msg_namelen != sizeof(nladdr)) {
+ fprintf(stderr, "sender address length == %d\n",
+ msg.msg_namelen);
+ exit(1);
+ }
+ for (h = (struct nlmsghdr *)iov.iov_base;
+ status >= (int)sizeof(*h);) {
+ int err;
+ int len = h->nlmsg_len;
+ int l = len - sizeof(*h);
+
+ if (l < 0 || len > status) {
+ if (msg.msg_flags & MSG_TRUNC) {
+ fprintf(stderr, "Truncated message\n");
+ return -1;
+ }
+ fprintf(stderr,
+ "!!!malformed message: len=%d\n", len);
+ exit(1);
+ }
+
+ if ((int)nladdr.nl_pid != peer
+ || h->nlmsg_pid != rtnl->local.nl_pid
+ || h->nlmsg_seq != seq) {
+ if (junk) {
+ err = junk(&nladdr, h, jarg);
+ if (err < 0)
+ return err;
+ }
+ /* Don't forget to skip that message. */
+ status -= NLMSG_ALIGN(len);
+ h = (struct nlmsghdr *)((char *)h
+ + NLMSG_ALIGN(len));
+ continue;
+ }
+
+ if (h->nlmsg_type == NLMSG_ERROR) {
+ struct nlmsgerr *merr =
+ (struct nlmsgerr *)NLMSG_DATA(h);
+ if (l < (int)sizeof(struct nlmsgerr)) {
+ fprintf(stderr, "ERROR truncated\n");
+ } else {
+ errno = -merr->error;
+ if (errno == 0) {
+ if (answer)
+ memcpy(answer, h,
+ h->nlmsg_len);
+ return 0;
+ }
+ perror("RTNETLINK answers");
+ }
+ return -1;
+ }
+ if (answer) {
+ memcpy(answer, h, h->nlmsg_len);
+ return 0;
+ }
+
+ fprintf(stderr, "Unexpected reply!!!\n");
+
+ status -= NLMSG_ALIGN(len);
+ h = (struct nlmsghdr *)((char *)h + NLMSG_ALIGN(len));
+ }
+ if (msg.msg_flags & MSG_TRUNC) {
+ fprintf(stderr, "Message truncated\n");
+ continue;
+ }
+ if (status) {
+ fprintf(stderr, "!!!Remnant of size %d\n", status);
+ exit(1);
+ }
+ }
+}
+
+int rtnl_listen(struct rtnl_handle *rtnl, rtnl_filter_t handler, void *jarg)
+{
+ int status;
+ struct nlmsghdr *h;
+ struct sockaddr_nl nladdr;
+ char buf[8192];
+ struct iovec iov = {
+ .iov_base = buf,
+ .iov_len = sizeof(buf),
+ };
+ struct msghdr msg = {
+ .msg_name = &nladdr,
+ .msg_namelen = sizeof(nladdr),
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
+ };
+
+ memset(&nladdr, 0, sizeof(nladdr));
+ nladdr.nl_family = AF_NETLINK;
+ nladdr.nl_pid = 0;
+ nladdr.nl_groups = 0;
+
+ while (1) {
+ iov.iov_len = sizeof(buf);
+ status = recvmsg(rtnl->fd, &msg, 0);
+
+ if (status < 0) {
+ if (errno == EINTR || errno == EAGAIN)
+ continue;
+ fprintf(stderr, "netlink receive error %s (%d)\n",
+ strerror(errno), errno);
+ if (errno == ENOBUFS)
+ continue;
+ return -1;
+ }
+ if (status == 0) {
+ fprintf(stderr, "EOF on netlink\n");
+ return -1;
+ }
+ if (msg.msg_namelen != sizeof(nladdr)) {
+ fprintf(stderr, "Sender address length == %d\n",
+ msg.msg_namelen);
+ exit(1);
+ }
+ for (h = (struct nlmsghdr *)buf; status >= (int)sizeof(*h);) {
+ int err;
+ int len = h->nlmsg_len;
+ int l = len - sizeof(*h);
+
+ if (l < 0 || len > status) {
+ if (msg.msg_flags & MSG_TRUNC) {
+ fprintf(stderr, "Truncated message\n");
+ return -1;
+ }
+ fprintf(stderr,
+ "!!!malformed message: len=%d\n", len);
+ exit(1);
+ }
+
+ err = handler(&nladdr, h, jarg);
+ if (err < 0)
+ return err;
+
+ status -= NLMSG_ALIGN(len);
+ h = (struct nlmsghdr *)((char *)h + NLMSG_ALIGN(len));
+ }
+ if (msg.msg_flags & MSG_TRUNC) {
+ fprintf(stderr, "Message truncated\n");
+ continue;
+ }
+ if (status) {
+ fprintf(stderr, "!!!Remnant of size %d\n", status);
+ exit(1);
+ }
+ }
+}
+
+int rtnl_from_file(FILE *rtnl, rtnl_filter_t handler, void *jarg)
+{
+ struct sockaddr_nl nladdr;
+ char buf[8192];
+ struct nlmsghdr *h = (void *)buf;
+
+ memset(&nladdr, 0, sizeof(nladdr));
+ nladdr.nl_family = AF_NETLINK;
+ nladdr.nl_pid = 0;
+ nladdr.nl_groups = 0;
+
+ while (1) {
+ int err;
+ size_t l, rl, arl;
+
+ rl = sizeof(*h);
+ arl = fread(&buf, 1, rl, rtnl);
+
+ if (arl != rl) {
+ if (arl == 0)
+ return 0;
+
+ if (ferror(rtnl))
+ fprintf(stderr, "%s: header read failed\n",
+ __func__);
+ else
+ fprintf(stderr, "%s: truncated header\n",
+ __func__);
+ return -1;
+ }
+
+ l = h->nlmsg_len > rl ? h->nlmsg_len - rl : 0;
+
+ if (l == 0 || (l + (size_t)NLMSG_HDRLEN) > sizeof(buf)) {
+ fprintf(stderr, "%s: malformed message: len=%zu @%lu\n",
+ __func__, (size_t)h->nlmsg_len, ftell(rtnl));
+ return -1;
+ }
+
+ rl = NLMSG_ALIGN(l);
+ arl = fread(NLMSG_DATA(h), 1, rl, rtnl);
+
+ if (arl != rl) {
+ if (ferror(rtnl))
+ fprintf(stderr, "%s: msg read failed\n",
+ __func__);
+ else
+ fprintf(stderr, "%s: truncated message\n",
+ __func__);
+ return -1;
+ }
+
+ err = handler(&nladdr, h, jarg);
+ if (err < 0)
+ return err;
+ }
+}
+
+int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data)
+{
+ int len = RTA_LENGTH(4);
+ struct rtattr *rta;
+ if ((int)(NLMSG_ALIGN(n->nlmsg_len) + len) > maxlen) {
+ fprintf(stderr,
+ "addattr32: Error! max allowed bound %d exceeded\n",
+ maxlen);
+ return -1;
+ }
+ rta = NLMSG_TAIL(n);
+ rta->rta_type = type;
+ rta->rta_len = len;
+ memcpy(RTA_DATA(rta), &data, 4);
+ n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + len;
+ return 0;
+}
+
+int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data,
+ int alen)
+{
+ int len = RTA_LENGTH(alen);
+ struct rtattr *rta;
+
+ if ((int)(NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(len)) > maxlen) {
+ fprintf(stderr,
+ "addattr_l ERROR: message exceeded bound of %d\n",
+ maxlen);
+ return -1;
+ }
+ rta = NLMSG_TAIL(n);
+ rta->rta_type = type;
+ rta->rta_len = len;
+
+ if (data)
+ memcpy(RTA_DATA(rta), data, alen);
+ else
+ assert(alen == 0);
+
+ n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(len);
+ return 0;
+}
+
+int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len)
+{
+ if ((int)(NLMSG_ALIGN(n->nlmsg_len) + NLMSG_ALIGN(len)) > maxlen) {
+ fprintf(stderr,
+ "addraw_l ERROR: message exceeded bound of %d\n",
+ maxlen);
+ return -1;
+ }
+
+ memcpy(NLMSG_TAIL(n), data, len);
+ memset((uint8_t *)NLMSG_TAIL(n) + len, 0, NLMSG_ALIGN(len) - len);
+ n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + NLMSG_ALIGN(len);
+ return 0;
+}
+
+struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type)
+{
+ struct rtattr *nest = NLMSG_TAIL(n);
+
+ addattr_l(n, maxlen, type, NULL, 0);
+ return nest;
+}
+
+int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest)
+{
+ nest->rta_len = (uint8_t *)NLMSG_TAIL(n) - (uint8_t *)nest;
+ return n->nlmsg_len;
+}
+
+struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type,
+ const void *data, int len)
+{
+ struct rtattr *start = NLMSG_TAIL(n);
+
+ addattr_l(n, maxlen, type, data, len);
+ addattr_nest(n, maxlen, type);
+ return start;
+}
+
+int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *start)
+{
+ struct rtattr *nest = start + NLMSG_ALIGN(start->rta_len);
+
+ start->rta_len = (uint8_t *)NLMSG_TAIL(n) - (uint8_t *)start;
+ addattr_nest_end(n, nest);
+ return n->nlmsg_len;
+}
+
+int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data)
+{
+ int len = RTA_LENGTH(4);
+ struct rtattr *subrta;
+
+ if ((int)(RTA_ALIGN(rta->rta_len) + len) > maxlen) {
+ fprintf(stderr,
+ "rta_addattr32: Error! max allowed bound %d exceeded\n",
+ maxlen);
+ return -1;
+ }
+ subrta = (struct rtattr *)(((char *)rta) + RTA_ALIGN(rta->rta_len));
+ subrta->rta_type = type;
+ subrta->rta_len = len;
+ memcpy(RTA_DATA(subrta), &data, 4);
+ rta->rta_len = NLMSG_ALIGN(rta->rta_len) + len;
+ return 0;
+}
+
+int rta_addattr_l(struct rtattr *rta, int maxlen, int type, const void *data,
+ int alen)
+{
+ struct rtattr *subrta;
+ int len = RTA_LENGTH(alen);
+
+ if ((int)(RTA_ALIGN(rta->rta_len) + RTA_ALIGN(len)) > maxlen) {
+ fprintf(stderr,
+ "rta_addattr_l: Error! max allowed bound %d exceeded\n",
+ maxlen);
+ return -1;
+ }
+ subrta = (struct rtattr *)(((char *)rta) + RTA_ALIGN(rta->rta_len));
+ subrta->rta_type = type;
+ subrta->rta_len = len;
+ memcpy(RTA_DATA(subrta), data, alen);
+ rta->rta_len = NLMSG_ALIGN(rta->rta_len) + RTA_ALIGN(len);
+ return 0;
+}
+
+int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len)
+{
+ memset(tb, 0, sizeof(struct rtattr *) * (max + 1));
+ while (RTA_OK(rta, len)) {
+ if ((rta->rta_type <= max) && (!tb[rta->rta_type]))
+ tb[rta->rta_type] = rta;
+ rta = RTA_NEXT(rta, len);
+ }
+ if (len)
+ fprintf(stderr, "!!!Deficit %d, rta_len=%d\n", len,
+ rta->rta_len);
+ return 0;
+}
+
+int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta,
+ int len)
+{
+ int i = 0;
+
+ memset(tb, 0, sizeof(struct rtattr *) * max);
+ while (RTA_OK(rta, len)) {
+ if (rta->rta_type <= max && i < max)
+ tb[i++] = rta;
+ rta = RTA_NEXT(rta, len);
+ }
+ if (len)
+ fprintf(stderr, "!!!Deficit %d, rta_len=%d\n", len,
+ rta->rta_len);
+ return i;
+}
+
+int __parse_rtattr_nested_compat(struct rtattr *tb[], int max,
+ struct rtattr *rta, int len)
+{
+ if ((int)RTA_PAYLOAD(rta) < len)
+ return -1;
+ if (RTA_PAYLOAD(rta) >= RTA_ALIGN(len) + sizeof(struct rtattr)) {
+ rta = (struct rtattr *)(uint8_t *)RTA_DATA(rta)
+ + RTA_ALIGN(len);
+ return parse_rtattr_nested(tb, max, rta);
+ }
+ memset(tb, 0, sizeof(struct rtattr *) * (max + 1));
+ return 0;
+}
+
+#endif /* __linux__ */
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-04 22:34:57 +0000