#define SYSLOG_NAMES
#include <syslog.h>
#include <malloc.h>
-#include <math.h>
#include <net/route.h>
#include <sys/mman.h>
#include <netdb.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
-#include <linux/if.h>
+#include <net/if.h>
#include <stddef.h>
#include <time.h>
#include <dlfcn.h>
int cluster_sockfd = -1; // Intra-cluster communications socket.
int epollfd = -1; // event polling
time_t basetime = 0; // base clock
-char hostname[1000] = ""; // us.
+char hostname[MAXHOSTNAME] = ""; // us.
static int tunidx; // ifr_ifindex of tun device
int nlseqnum = 0; // netlink sequence number
int min_initok_nlseqnum = 0; // minimun seq number for messages after init is ok
CONFIG("cluster_hb_timeout", cluster_hb_timeout, INT),
CONFIG("cluster_master_min_adv", cluster_master_min_adv, INT),
CONFIG("ipv6_prefix", ipv6_prefix, IPv6),
+ CONFIG("cli_bind_address", cli_bind_address, IPv4),
+ CONFIG("hostname", hostname, STRING),
+ CONFIG("nexthop_address", nexthop_address, IPv4),
+ CONFIG("nexthop6_address", nexthop6_address, IPv6),
{ NULL, 0, 0, 0 },
};
NULL,
"plugin_pre_auth",
"plugin_post_auth",
- "plugin_packet_rx",
- "plugin_packet_tx",
"plugin_timer",
"plugin_new_session",
"plugin_kill_session",
struct Tringbuffer *ringbuffer = NULL;
#endif
+static ssize_t netlink_send(struct nlmsghdr *nh);
+static void netlink_addattr(struct nlmsghdr *nh, int type, const void *data, int alen);
static void cache_ipmap(in_addr_t ip, sessionidt s);
static void uncache_ipmap(in_addr_t ip);
static void cache_ipv6map(struct in6_addr ip, int prefixlen, sessionidt s);
//
static void routeset(sessionidt s, in_addr_t ip, int prefixlen, in_addr_t gw, int add)
{
- struct rtentry r;
- in_addr_t mask;
+ struct {
+ struct nlmsghdr nh;
+ struct rtmsg rt;
+ char buf[32];
+ } req;
int i;
+ in_addr_t n_ip;
if (!prefixlen) prefixlen = 32;
- mask = 0xffffffff << (32 - prefixlen);
+ ip &= 0xffffffff << (32 - prefixlen);; // Force the ip to be the first one in the route.
- ip &= mask; // Force the ip to be the first one in the route.
+ memset(&req, 0, sizeof(req));
- memset(&r, 0, sizeof(r));
- r.rt_dev = config->tundevice;
- r.rt_dst.sa_family = AF_INET;
- *(uint32_t *) & (((struct sockaddr_in *) &r.rt_dst)->sin_addr.s_addr) = htonl(ip);
- r.rt_gateway.sa_family = AF_INET;
- *(uint32_t *) & (((struct sockaddr_in *) &r.rt_gateway)->sin_addr.s_addr) = htonl(gw);
- r.rt_genmask.sa_family = AF_INET;
- *(uint32_t *) & (((struct sockaddr_in *) &r.rt_genmask)->sin_addr.s_addr) = htonl(mask);
- r.rt_flags = (RTF_UP | RTF_STATIC);
+ if (add)
+ {
+ req.nh.nlmsg_type = RTM_NEWROUTE;
+ req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE;
+ }
+ else
+ {
+ req.nh.nlmsg_type = RTM_DELROUTE;
+ req.nh.nlmsg_flags = NLM_F_REQUEST;
+ }
+
+ req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.rt));
+
+ req.rt.rtm_family = AF_INET;
+ req.rt.rtm_dst_len = prefixlen;
+ req.rt.rtm_table = RT_TABLE_MAIN;
+ req.rt.rtm_protocol = RTPROT_BOOT; // XXX
+ req.rt.rtm_scope = RT_SCOPE_LINK;
+ req.rt.rtm_type = RTN_UNICAST;
+
+ netlink_addattr(&req.nh, RTA_OIF, &tunidx, sizeof(int));
+ n_ip = htonl(ip);
+ netlink_addattr(&req.nh, RTA_DST, &n_ip, sizeof(n_ip));
if (gw)
- r.rt_flags |= RTF_GATEWAY;
- else if (prefixlen == 32)
- r.rt_flags |= RTF_HOST;
+ {
+ n_ip = htonl(gw);
+ netlink_addattr(&req.nh, RTA_GATEWAY, &n_ip, sizeof(n_ip));
+ }
LOG(1, s, 0, "Route %s %s/%d%s%s\n", add ? "add" : "del",
fmtaddr(htonl(ip), 0), prefixlen,
gw ? " via" : "", gw ? fmtaddr(htonl(gw), 2) : "");
- if (ioctl(ifrfd, add ? SIOCADDRT : SIOCDELRT, (void *) &r) < 0)
- LOG(0, 0, 0, "routeset() error in ioctl: %s\n", strerror(errno));
+ if (netlink_send(&req.nh) < 0)
+ LOG(0, 0, 0, "routeset() error in sending netlink message: %s\n", strerror(errno));
#ifdef BGP
if (add)
void route6set(sessionidt s, struct in6_addr ip, int prefixlen, int add)
{
- struct in6_rtmsg rt;
+ struct {
+ struct nlmsghdr nh;
+ struct rtmsg rt;
+ char buf[64];
+ } req;
+ int metric;
char ipv6addr[INET6_ADDRSTRLEN];
- if (ifr6fd < 0)
+ if (!config->ipv6_prefix.s6_addr[0])
{
LOG(0, 0, 0, "Asked to set IPv6 route, but IPv6 not setup.\n");
return;
}
- memset(&rt, 0, sizeof(rt));
+ memset(&req, 0, sizeof(req));
+
+ if (add)
+ {
+ req.nh.nlmsg_type = RTM_NEWROUTE;
+ req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE;
+ }
+ else
+ {
+ req.nh.nlmsg_type = RTM_DELROUTE;
+ req.nh.nlmsg_flags = NLM_F_REQUEST;
+ }
+
+ req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.rt));
- memcpy(&rt.rtmsg_dst, &ip, sizeof(struct in6_addr));
- rt.rtmsg_dst_len = prefixlen;
- rt.rtmsg_metric = 1;
- rt.rtmsg_flags = RTF_UP;
- rt.rtmsg_ifindex = tunidx;
+ req.rt.rtm_family = AF_INET6;
+ req.rt.rtm_dst_len = prefixlen;
+ req.rt.rtm_table = RT_TABLE_MAIN;
+ req.rt.rtm_protocol = RTPROT_BOOT; // XXX
+ req.rt.rtm_scope = RT_SCOPE_LINK;
+ req.rt.rtm_type = RTN_UNICAST;
+
+ netlink_addattr(&req.nh, RTA_OIF, &tunidx, sizeof(int));
+ netlink_addattr(&req.nh, RTA_DST, &ip, sizeof(ip));
+ metric = 1;
+ netlink_addattr(&req.nh, RTA_METRICS, &metric, sizeof(metric));
LOG(1, 0, 0, "Route %s %s/%d\n",
add ? "add" : "del",
inet_ntop(AF_INET6, &ip, ipv6addr, INET6_ADDRSTRLEN),
prefixlen);
- if (ioctl(ifr6fd, add ? SIOCADDRT : SIOCDELRT, (void *) &rt) < 0)
- LOG(0, 0, 0, "route6set() error in ioctl: %s\n",
- strerror(errno));
+ if (netlink_send(&req.nh) < 0)
+ LOG(0, 0, 0, "route6set() error in sending netlink message: %s\n", strerror(errno));
- // FIXME: need to add BGP routing (RFC2858)
+#ifdef BGP
+ if (add)
+ bgp_add_route6(ip, prefixlen);
+ else
+ bgp_del_route6(ip, prefixlen);
+#endif /* BGP */
if (s)
{
}
/* adapted from iproute2 */
-void netlink_addattr(struct nlmsghdr *nh, int type, const void *data, int alen)
+static void netlink_addattr(struct nlmsghdr *nh, int type, const void *data, int alen)
{
int len = RTA_LENGTH(alen);
struct rtattr *rta;
// Set up TUN interface
static void inittun(void)
{
- struct ifinfomsg ifinfo;
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
assert(strlen(ifr.ifr_name) < sizeof(config->tundevice) - 1);
strncpy(config->tundevice, ifr.ifr_name, sizeof(config->tundevice));
+ tunidx = if_nametoindex(config->tundevice);
+ if (tunidx == 0)
{
- // get the interface index
- struct {
- struct nlmsghdr nh;
- struct ifinfomsg ifinfo __attribute__ ((aligned(NLMSG_ALIGNTO)));
- struct rtattr ifname_rta __attribute__ ((aligned(RTA_ALIGNTO)));
- char ifname[IFNAMSIZ];
- } req;
- char buf[4096];
- ssize_t len;
- struct nlmsghdr *resp_nh;
-
- req.nh.nlmsg_type = RTM_GETLINK;
- req.nh.nlmsg_flags = NLM_F_REQUEST;
- req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifinfo));
-
- req.ifinfo.ifi_family = AF_UNSPEC; // as the man says
-
- netlink_addattr(&req.nh, IFLA_IFNAME, config->tundevice, strlen(config->tundevice)+1);
-
- if(netlink_send(&req.nh) < 0 || (len = netlink_recv(buf, sizeof(buf))) < 0)
- {
- LOG(0, 0, 0, "Error getting tun ifindex: %s\n", strerror(errno));
- exit(1);
- }
-
- resp_nh = (struct nlmsghdr *)buf;
- if (!NLMSG_OK (resp_nh, len))
- {
- LOG(0, 0, 0, "Malformed answer getting tun ifindex %ld\n", len);
- exit(1);
- }
-
- memcpy(&ifinfo, NLMSG_DATA(resp_nh), sizeof(ifinfo));
- // got index
- tunidx = ifinfo.ifi_index;
+ LOG(0, 0, 0, "Can't get tun interface index\n");
+ exit(1);
}
+
{
struct {
// interface setting
union {
struct ifinfomsg ifinfo;
struct ifaddrmsg ifaddr;
- } ifmsg __attribute__ ((aligned(NLMSG_ALIGNTO)));
+ } ifmsg;
char rtdata[32]; // 32 should be enough
} req;
uint32_t txqlen, mtu;
- struct in_addr ip;
+ in_addr_t ip;
memset(&req, 0, sizeof(req));
- req.nh.nlmsg_type = RTM_SETLINK;
+ req.nh.nlmsg_type = RTM_NEWLINK;
req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_MULTI;
req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifinfo));
- req.ifmsg.ifinfo = ifinfo;
+ req.ifmsg.ifinfo.ifi_family = AF_UNSPEC;
+ req.ifmsg.ifinfo.ifi_index = tunidx;
req.ifmsg.ifinfo.ifi_flags |= IFF_UP; // set interface up
req.ifmsg.ifinfo.ifi_change = IFF_UP; // only change this flag
memset(&req, 0, sizeof(req));
req.nh.nlmsg_type = RTM_NEWADDR;
- req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_MULTI;
+ req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE | NLM_F_MULTI;
req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifaddr));
req.ifmsg.ifaddr.ifa_family = AF_INET;
req.ifmsg.ifaddr.ifa_prefixlen = 32;
- req.ifmsg.ifaddr.ifa_index = ifinfo.ifi_index;
+ req.ifmsg.ifaddr.ifa_scope = RT_SCOPE_UNIVERSE;
+ req.ifmsg.ifaddr.ifa_index = tunidx;
if (config->bind_address)
- ip.s_addr = config->bind_address;
+ ip = config->bind_address;
else
- ip.s_addr = 0x01010101, // 1.1.1.1
+ ip = 0x01010101; // 1.1.1.1
netlink_addattr(&req.nh, IFA_LOCAL, &ip, sizeof(ip));
if (netlink_send(&req.nh) < 0)
memset(&req, 0, sizeof(req));
req.nh.nlmsg_type = RTM_NEWADDR;
- req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_MULTI;
+ req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE | NLM_F_MULTI;
req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifaddr));
req.ifmsg.ifaddr.ifa_family = AF_INET6;
req.ifmsg.ifaddr.ifa_prefixlen = 64;
req.ifmsg.ifaddr.ifa_scope = RT_SCOPE_LINK;
- req.ifmsg.ifaddr.ifa_index = ifinfo.ifi_index;
+ req.ifmsg.ifaddr.ifa_index = tunidx;
// Link local address is FE80::1
memset(&ip6, 0, sizeof(ip6));
memset(&req, 0, sizeof(req));
req.nh.nlmsg_type = RTM_NEWADDR;
- req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_MULTI;
+ req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE | NLM_F_MULTI;
req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifaddr));
req.ifmsg.ifaddr.ifa_family = AF_INET6;
req.ifmsg.ifaddr.ifa_prefixlen = 64;
req.ifmsg.ifaddr.ifa_scope = RT_SCOPE_UNIVERSE;
- req.ifmsg.ifaddr.ifa_index = ifinfo.ifi_index;
+ req.ifmsg.ifaddr.ifa_index = tunidx;
// Global address is prefix::1
ip6 = config->ipv6_prefix;
// Set multilink options before sending initial LCP packet
sess_local[s].mp_mrru = 1614;
- sess_local[s].mp_epdis = config->bind_address ? config->bind_address : my_address;
+ sess_local[s].mp_epdis = ntohl(config->bind_address ? config->bind_address : my_address);
sendlcp(s, t);
change_state(s, lcp, RequestSent);
static clockt last_talked = 0;
static clockt start_busy_wait = 0;
- if (!config->cluster_iam_master)
- {
#ifdef BGP
- static time_t stopped_bgp = 0;
- if (bgp_configured)
+ static time_t stopped_bgp = 0;
+ if (bgp_configured)
+ {
+ if (!stopped_bgp)
{
- if (!stopped_bgp)
- {
- LOG(1, 0, 0, "Shutting down in %d seconds, stopping BGP...\n", QUIT_DELAY);
+ LOG(1, 0, 0, "Shutting down in %d seconds, stopping BGP...\n", QUIT_DELAY);
- for (i = 0; i < BGP_NUM_PEERS; i++)
- if (bgp_peers[i].state == Established)
- bgp_stop(&bgp_peers[i]);
+ for (i = 0; i < BGP_NUM_PEERS; i++)
+ if (bgp_peers[i].state == Established)
+ bgp_stop(&bgp_peers[i]);
- stopped_bgp = time_now;
+ stopped_bgp = time_now;
+ if (!config->cluster_iam_master)
+ {
// we don't want to become master
cluster_send_ping(0);
return 1;
}
-
- if (time_now < (stopped_bgp + QUIT_DELAY))
- return 1;
}
+
+ if (!config->cluster_iam_master && time_now < (stopped_bgp + QUIT_DELAY))
+ return 1;
+ }
#endif /* BGP */
+ if (!config->cluster_iam_master)
return 0;
- }
if (main_quit == QUIT_SHUTDOWN)
{
if (config->neighbour[i].name[0])
bgp_start(&bgp_peers[i], config->neighbour[i].name,
config->neighbour[i].as, config->neighbour[i].keepalive,
- config->neighbour[i].hold, 0); /* 0 = routing disabled */
+ config->neighbour[i].hold, config->neighbour[i].update_source,
+ 0); /* 0 = routing disabled */
}
#endif /* BGP */
more++;
}
}
+#ifdef BGP
+ else
+ /* no event received, but timers could still have expired */
+ bgp_process_peers_timers();
+#endif /* BGP */
if (time_changed)
{
if (!*hostname)
{
- // Grab my hostname unless it's been specified
- gethostname(hostname, sizeof(hostname));
- stripdomain(hostname);
+ if (!*config->hostname)
+ {
+ // Grab my hostname unless it's been specified
+ gethostname(hostname, sizeof(hostname));
+ stripdomain(hostname);
+ }
+ else
+ strcpy(hostname, config->hostname);
}
_statistics->start_time = _statistics->last_reset = time(NULL);
projects / l2tpns.git / blobdiff