#include <signal.h>
#include <sys/stat.h>
#include <fcntl.h>
-#include <fnmatch.h>
#include <time.h>
#include <libgen.h>
#include <sys/utsname.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <arpa/inet.h>
-#include <ifaddrs.h>
#include <net/if_arp.h>
-#include <linux/filter.h>
-#include <linux/if_vlan.h>
-#include <linux/if_packet.h>
-#include <linux/sockios.h>
#ifdef USE_SNMP
#include <net-snmp/net-snmp-config.h>
static void usage(void);
-static int lldpd_iface_init(struct lldpd *, struct lldpd_hardware *);
-static void lldpd_iface_init_mtu(struct lldpd *, struct lldpd_hardware *);
-static int lldpd_iface_close(struct lldpd *, struct lldpd_hardware *);
-static void lldpd_iface_multicast(struct lldpd *, const char *, int);
-
-/* LLDP: "ether proto 0x88cc and ether dst 01:80:c2:00:00:0e" */
-/* FDP: "ether dst 01:e0:52:cc:cc:cc" */
-/* CDP: "ether dst 01:00:0c:cc:cc:cc" */
-/* SONMP: "ether dst 01:00:81:00:01:00" */
-/* EDP: "ether dst 00:e0:2b:00:00:00" */
-#define LLDPD_FILTER_F \
- { 0x28, 0, 0, 0x0000000c }, \
- { 0x15, 0, 4, 0x000088cc }, \
- { 0x20, 0, 0, 0x00000002 }, \
- { 0x15, 0, 2, 0xc200000e }, \
- { 0x28, 0, 0, 0x00000000 }, \
- { 0x15, 11, 12, 0x00000180 }, \
- { 0x20, 0, 0, 0x00000002 }, \
- { 0x15, 0, 2, 0x2b000000 }, \
- { 0x28, 0, 0, 0x00000000 }, \
- { 0x15, 7, 8, 0x000000e0 }, \
- { 0x15, 1, 0, 0x0ccccccc }, \
- { 0x15, 0, 2, 0x81000100 }, \
- { 0x28, 0, 0, 0x00000000 }, \
- { 0x15, 3, 4, 0x00000100 }, \
- { 0x15, 0, 3, 0x52cccccc }, \
- { 0x28, 0, 0, 0x00000000 }, \
- { 0x15, 0, 1, 0x000001e0 }, \
- { 0x6, 0, 0, 0x0000ffff }, \
- { 0x6, 0, 0, 0x00000000 },
-static struct sock_filter lldpd_filter_f[] = { LLDPD_FILTER_F };
-
static struct protocol protos[] =
{
{ LLDPD_MODE_LLDP, 1, "LLDP", ' ', lldp_send, lldp_decode, NULL,
{0,0,0,0,0,0} }
};
-static
-struct lldpd_hardware *lldpd_hardware_add(struct lldpd *, struct ifaddrs *);
+static void lldpd_update_localchassis(struct lldpd *);
+static void lldpd_update_localports(struct lldpd *);
+static void lldpd_cleanup(struct lldpd *);
static void lldpd_loop(struct lldpd *);
static void lldpd_shutdown(int);
static void lldpd_exit();
static int lldpd_guess_type(struct lldpd *, char *, int);
static void lldpd_decode(struct lldpd *, char *, int,
struct lldpd_hardware *);
+static void lldpd_update_chassis(struct lldpd_chassis *,
+ const struct lldpd_chassis *);
#ifdef ENABLE_LLDPMED
static void lldpd_med(struct lldpd_chassis *);
#endif
exit(1);
}
-static void
-lldpd_iface_init_mtu(struct lldpd *global, struct lldpd_hardware *hardware)
+struct lldpd_hardware *
+lldpd_get_hardware(struct lldpd *cfg, char *name, struct lldpd_ops *ops)
{
- struct ifreq ifr;
-
- /* get MTU */
- memset(&ifr, 0, sizeof(ifr));
- strlcpy(ifr.ifr_name, hardware->h_ifname, sizeof(ifr.ifr_name));
- if (ioctl(global->g_sock, SIOCGIFMTU, (char*)&ifr) == -1) {
- LLOG_WARN("unable to get MTU of %s, using 1500", hardware->h_ifname);
- hardware->h_mtu = 1500;
- } else
- hardware->h_mtu = hardware->h_lport.p_mfs = ifr.ifr_mtu;
-}
-
-static int
-lldpd_iface_init(struct lldpd *global, struct lldpd_hardware *hardware)
-{
- int status;
- struct sock_fprog prog;
-
- lldpd_iface_init_mtu(global, hardware);
- status = priv_iface_init(hardware, -1);
- if (status != 0)
- return status;
-
- /* Set filter */
- prog.filter = lldpd_filter_f;
- prog.len = sizeof(lldpd_filter_f) / sizeof(struct sock_filter);
- if (setsockopt(hardware->h_raw, SOL_SOCKET, SO_ATTACH_FILTER,
- &prog, sizeof(prog)) < 0) {
- LLOG_WARN("unable to change filter for %s", hardware->h_ifname);
- return ENETDOWN;
- }
-
- lldpd_iface_multicast(global, hardware->h_ifname, 0);
-
- LLOG_DEBUG("interface %s initialized (fd=%d)", hardware->h_ifname,
- hardware->h_raw);
- return 0;
-}
-
-static void
-lldpd_iface_multicast(struct lldpd *global, const char *name, int remove)
-{
- int i, rc;
-
- for (i=0; global->g_protocols[i].mode != 0; i++) {
- if (!global->g_protocols[i].enabled) continue;
- if ((rc = priv_iface_multicast(name,
- global->g_protocols[i].mac, !remove)) != 0) {
- errno = rc;
- if (errno != ENOENT)
- LLOG_INFO("unable to %s %s address to multicast filter for %s",
- (remove)?"delete":"add",
- global->g_protocols[i].name,
- name);
- }
+ struct lldpd_hardware *hardware;
+ TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) {
+ if ((strcmp(hardware->h_ifname, name) == 0) &&
+ ((!ops) || (ops == hardware->h_ops)))
+ break;
}
+ return hardware;
}
-static int
-lldpd_iface_close(struct lldpd *global, struct lldpd_hardware *hardware)
+struct lldpd_hardware *
+lldpd_alloc_hardware(struct lldpd *cfg, char *name)
{
- char listen[IFNAMSIZ];
+ struct lldpd_hardware *hardware;
- close(hardware->h_raw);
- hardware->h_raw = -1;
+ if ((hardware = (struct lldpd_hardware *)
+ calloc(1, sizeof(struct lldpd_hardware))) == NULL)
+ return NULL;
- memcpy(listen, hardware->h_ifname, IFNAMSIZ);
- lldpd_iface_multicast(global, listen, 1);
+ strlcpy(hardware->h_ifname, name, sizeof(hardware->h_ifname));
+ hardware->h_lport.p_chassis = LOCAL_CHASSIS(cfg);
+ TAILQ_INIT(&hardware->h_rports);
- return 0;
+#ifdef ENABLE_LLDPMED
+ if (LOCAL_CHASSIS(cfg)->c_med_cap_available) {
+ hardware->h_lport.p_med_cap_enabled = LLDPMED_CAP_CAP;
+ if (!cfg->g_noinventory)
+ hardware->h_lport.p_med_cap_enabled |= LLDPMED_CAP_IV;
+ }
+#endif
+#ifdef ENABLE_DOT1
+ TAILQ_INIT(&hardware->h_lport.p_vlans);
+#endif
+ return hardware;
}
#ifdef ENABLE_DOT1
#endif
/* If `all' is true, clear all information, including information that
- are not refreshed periodically. If `all' is true, also free the
- port. */
+ are not refreshed periodically. Port should be freed manually. */
void
lldpd_port_cleanup(struct lldpd_port *port, int all)
{
free(port->p_lastframe);
if (port->p_chassis) /* chassis may not have been attributed, yet */
port->p_chassis->c_refcount--;
- free(port);
}
}
if (del) {
TAILQ_REMOVE(&hardware->h_rports, port, p_entries);
lldpd_port_cleanup(port, 1);
+ free(port);
}
}
}
void
-lldpd_hardware_cleanup(struct lldpd_hardware *hardware)
+lldpd_hardware_cleanup(struct lldpd *cfg, struct lldpd_hardware *hardware)
{
+ int i;
lldpd_port_cleanup(&hardware->h_lport, 1);
+ /* If we have a dedicated cleanup function, use it. Otherwise,
+ we just free the hardware-dependent data and close all FD
+ in h_recvfds and h_sendfd. */
+ if (hardware->h_ops->cleanup)
+ hardware->h_ops->cleanup(cfg, hardware);
+ else {
+ free(hardware->h_data);
+ for (i=0; i < FD_SETSIZE; i++)
+ if (FD_ISSET(i, &hardware->h_recvfds))
+ close(i);
+ if (hardware->h_sendfd) close(hardware->h_sendfd);
+ }
free(hardware);
}
-void
+static void
lldpd_cleanup(struct lldpd *cfg)
{
struct lldpd_hardware *hardware, *hardware_next;
for (hardware = TAILQ_FIRST(&cfg->g_hardware); hardware != NULL;
hardware = hardware_next) {
hardware_next = TAILQ_NEXT(hardware, h_entries);
- if (hardware->h_flags == 0) {
+ if (!hardware->h_flags) {
TAILQ_REMOVE(&cfg->g_hardware, hardware, h_entries);
- lldpd_iface_close(cfg, hardware);
lldpd_remote_cleanup(cfg, hardware, 1);
- lldpd_hardware_cleanup(hardware);
+ lldpd_hardware_cleanup(cfg, hardware);
} else
lldpd_remote_cleanup(cfg, hardware, 0);
}
}
-static struct lldpd_hardware *
-lldpd_hardware_add(struct lldpd *cfg, struct ifaddrs *ifa)
-{
-#if defined (ENABLE_DOT1) || defined (ENABLE_DOT3)
- struct ifaddrs *oifap, *oifa;
-#endif
- struct lldpd_hardware *hardware;
- struct lldpd_port *port;
-#ifdef ENABLE_DOT1
- struct lldpd_vlan *vlan;
- struct vlan_ioctl_args ifv;
-#endif
-#ifdef ENABLE_DOT3
- struct ethtool_cmd ethc;
-#endif
- u_int8_t *lladdr;
-
- TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) {
- if (strcmp(hardware->h_ifname, ifa->ifa_name) == 0)
- break;
- }
-
- if (hardware == NULL) {
- if ((hardware = (struct lldpd_hardware *)
- calloc(1, sizeof(struct lldpd_hardware))) == NULL)
- return (NULL);
- hardware->h_raw = -1;
- hardware->h_lport.p_chassis = LOCAL_CHASSIS(cfg);
- TAILQ_INIT(&hardware->h_rports);
-#ifdef ENABLE_LLDPMED
- if (LOCAL_CHASSIS(cfg)->c_med_cap_available) {
- hardware->h_lport.p_med_cap_enabled = LLDPMED_CAP_CAP;
- if (!cfg->g_noinventory)
- hardware->h_lport.p_med_cap_enabled |= LLDPMED_CAP_IV;
- }
-#endif
-#ifdef ENABLE_DOT1
- TAILQ_INIT(&hardware->h_lport.p_vlans);
- } else {
- lldpd_port_cleanup(&hardware->h_lport, 0);
-#endif
- }
-
- port = &hardware->h_lport;
- hardware->h_flags = ifa->ifa_flags;
-
- strlcpy(hardware->h_ifname, ifa->ifa_name, sizeof(hardware->h_ifname));
- lladdr = (u_int8_t*)(((struct sockaddr_ll *)ifa->ifa_addr)->sll_addr);
- memcpy(&hardware->h_lladdr, lladdr, sizeof(hardware->h_lladdr));
- iface_get_permanent_mac(cfg, hardware);
- port->p_id_subtype = LLDP_PORTID_SUBTYPE_LLADDR;
- if ((port->p_id = calloc(1, sizeof(hardware->h_lladdr))) == NULL)
- fatal(NULL);
- memcpy(port->p_id, hardware->h_lladdr, sizeof(hardware->h_lladdr));
- port->p_id_len = sizeof(hardware->h_lladdr);
- port->p_descr = strdup(hardware->h_ifname);
-
- if (LOCAL_CHASSIS(cfg)->c_id == NULL) {
- /* Use the first port's l2 addr as the chassis ID */
- if ((LOCAL_CHASSIS(cfg)->c_id =
- malloc(sizeof(hardware->h_lladdr))) == NULL)
- fatal(NULL);
- LOCAL_CHASSIS(cfg)->c_id_subtype = LLDP_CHASSISID_SUBTYPE_LLADDR;
- LOCAL_CHASSIS(cfg)->c_id_len = sizeof(hardware->h_lladdr);
- memcpy(LOCAL_CHASSIS(cfg)->c_id,
- hardware->h_lladdr, sizeof(hardware->h_lladdr));
- }
-
- /* Get VLANS and aggregation status */
-#if defined (ENABLE_DOT3) || defined (ENABLE_DOT1)
- if (getifaddrs(&oifap) != 0)
- fatal("lldpd_hardware_add: failed to get interface list");
- for (oifa = oifap; oifa != NULL; oifa = oifa->ifa_next) {
-#ifdef ENABLE_DOT1
- /* Check if we already have checked this one */
- int skip = 0;
- TAILQ_FOREACH(vlan, &port->p_vlans, v_entries) {
- if (strcmp(vlan->v_name, oifa->ifa_name) == 0) {
- skip = 1;
- break;
- }
- }
- if (skip) continue;
-#endif
-
- /* Aggregation check */
-#ifdef ENABLE_DOT3
- if (iface_is_bond_slave(cfg, hardware->h_ifname, oifa->ifa_name, NULL))
- port->p_aggregid = if_nametoindex(oifa->ifa_name);
-#endif
-
-#ifdef ENABLE_DOT1
- /* VLAN check */
- memset(&ifv, 0, sizeof(ifv));
- ifv.cmd = GET_VLAN_REALDEV_NAME_CMD;
- strlcpy(ifv.device1, oifa->ifa_name, sizeof(ifv.device1));
- if ((ioctl(cfg->g_sock, SIOCGIFVLAN, &ifv) >= 0) &&
- ((iface_is_bond_slave(cfg, hardware->h_ifname, ifv.u.device2, NULL)) ||
- (iface_is_bridged_to(cfg, hardware->h_ifname, ifv.u.device2)) ||
- (strncmp(hardware->h_ifname, ifv.u.device2, sizeof(ifv.u.device2)) == 0))) {
- if ((vlan = (struct lldpd_vlan *)
- calloc(1, sizeof(struct lldpd_vlan))) == NULL)
- continue;
- if ((vlan->v_name = strdup(oifa->ifa_name)) == NULL) {
- free(vlan);
- continue;
- }
- memset(&ifv, 0, sizeof(ifv));
- ifv.cmd = GET_VLAN_VID_CMD;
- strlcpy(ifv.device1, oifa->ifa_name, sizeof(ifv.device1));
- if (ioctl(cfg->g_sock, SIOCGIFVLAN, &ifv) < 0) {
- /* Dunno what happened */
- free(vlan->v_name);
- free(vlan);
- } else {
- vlan->v_vid = ifv.u.VID;
- TAILQ_INSERT_TAIL(&port->p_vlans, vlan, v_entries);
- }
- }
-#endif
- }
- freeifaddrs(oifap);
-#endif
-
-#ifdef ENABLE_DOT3
- /* MAC/PHY */
- if (priv_ethtool(hardware->h_ifname, ðc) == 0) {
- int j;
- int advertised_ethtool_to_rfc3636[][2] = {
- {ADVERTISED_10baseT_Half, LLDP_DOT3_LINK_AUTONEG_10BASE_T},
- {ADVERTISED_10baseT_Full, LLDP_DOT3_LINK_AUTONEG_10BASET_FD},
- {ADVERTISED_100baseT_Half, LLDP_DOT3_LINK_AUTONEG_100BASE_TX},
- {ADVERTISED_100baseT_Full, LLDP_DOT3_LINK_AUTONEG_100BASE_TXFD},
- {ADVERTISED_1000baseT_Half, LLDP_DOT3_LINK_AUTONEG_1000BASE_T},
- {ADVERTISED_1000baseT_Full, LLDP_DOT3_LINK_AUTONEG_1000BASE_TFD},
- {ADVERTISED_10000baseT_Full, LLDP_DOT3_LINK_AUTONEG_OTHER},
- {ADVERTISED_Pause, LLDP_DOT3_LINK_AUTONEG_FDX_PAUSE},
- {ADVERTISED_Asym_Pause, LLDP_DOT3_LINK_AUTONEG_FDX_APAUSE},
- {ADVERTISED_2500baseX_Full, LLDP_DOT3_LINK_AUTONEG_OTHER},
- {0,0}};
-
- port->p_autoneg_support = (ethc.supported & SUPPORTED_Autoneg) ? 1 : 0;
- port->p_autoneg_enabled = (ethc.autoneg == AUTONEG_DISABLE) ? 0 : 1;
- for (j=0; advertised_ethtool_to_rfc3636[j][0]; j++) {
- if (ethc.advertising & advertised_ethtool_to_rfc3636[j][0])
- port->p_autoneg_advertised |= advertised_ethtool_to_rfc3636[j][1];
- }
- switch (ethc.speed) {
- case SPEED_10:
- port->p_mau_type = (ethc.duplex == DUPLEX_FULL) ? \
- LLDP_DOT3_MAU_10BASETFD : LLDP_DOT3_MAU_10BASETHD;
- if (ethc.port == PORT_BNC) port->p_mau_type = LLDP_DOT3_MAU_10BASE2;
- if (ethc.port == PORT_FIBRE)
- port->p_mau_type = (ethc.duplex == DUPLEX_FULL) ? \
- LLDP_DOT3_MAU_10BASEFLDF : LLDP_DOT3_MAU_10BASEFLHD;
- break;
- case SPEED_100:
- port->p_mau_type = (ethc.duplex == DUPLEX_FULL) ? \
- LLDP_DOT3_MAU_100BASETXFD : LLDP_DOT3_MAU_100BASETXHD;
- if (ethc.port == PORT_BNC)
- port->p_mau_type = (ethc.duplex == DUPLEX_FULL) ? \
- LLDP_DOT3_MAU_100BASET2DF : LLDP_DOT3_MAU_100BASET2HD;
- if (ethc.port == PORT_FIBRE)
- port->p_mau_type = (ethc.duplex == DUPLEX_FULL) ? \
- LLDP_DOT3_MAU_100BASEFXFD : LLDP_DOT3_MAU_100BASEFXHD;
- break;
- case SPEED_1000:
- port->p_mau_type = (ethc.duplex == DUPLEX_FULL) ? \
- LLDP_DOT3_MAU_1000BASETFD : LLDP_DOT3_MAU_1000BASETHD;
- if (ethc.port == PORT_FIBRE)
- port->p_mau_type = (ethc.duplex == DUPLEX_FULL) ? \
- LLDP_DOT3_MAU_1000BASEXFD : LLDP_DOT3_MAU_1000BASEXHD;
- break;
- case SPEED_10000:
- port->p_mau_type = (ethc.port == PORT_FIBRE) ? \
- LLDP_DOT3_MAU_10GIGBASEX : LLDP_DOT3_MAU_10GIGBASER;
- break;
- }
- if (ethc.port == PORT_AUI) port->p_mau_type = LLDP_DOT3_MAU_AUI;
- } else
- LLOG_DEBUG("unable to get eth info for %s", hardware->h_ifname);
-#endif
-
- if (!INTERFACE_OPENED(hardware)) {
-
- if (lldpd_iface_init(cfg, hardware) != 0) {
- LLOG_WARN("unable to initialize %s", hardware->h_ifname);
- lldpd_hardware_cleanup(hardware);
- return (NULL);
- }
-
- TAILQ_INSERT_TAIL(&cfg->g_hardware, hardware, h_entries);
- }
-
- return (hardware);
-}
-
static int
lldpd_guess_type(struct lldpd *cfg, char *frame, int s)
{
/* The port is known, remove it before adding it back */
TAILQ_REMOVE(&hardware->h_rports, oport, p_entries);
lldpd_port_cleanup(oport, 1);
+ free(oport);
}
if (ochassis) {
- /* Chassis is known, replace values. Hackish */
- chassis->c_refcount = ochassis->c_refcount;
- chassis->c_index = ochassis->c_index;
- memcpy(&chassis->c_entries, &ochassis->c_entries,
- sizeof(chassis->c_entries));
- lldpd_chassis_cleanup(ochassis, 0);
- memcpy(ochassis, chassis, sizeof(struct lldpd_chassis));
+ lldpd_update_chassis(ochassis, chassis);
free(chassis);
chassis = ochassis;
} else {
return;
}
+/* Update chassis `ochassis' with values from `chassis'. */
+static void
+lldpd_update_chassis(struct lldpd_chassis *ochassis,
+ const struct lldpd_chassis *chassis) {
+ TAILQ_ENTRY(lldpd_chassis) entries;
+ /* We want to keep refcount, index and list stuff from the current
+ * chassis */
+ int refcount = ochassis->c_refcount;
+ int index = ochassis->c_index;
+ memcpy(&entries, &ochassis->c_entries,
+ sizeof(entries));
+ /* Make the copy */
+ lldpd_chassis_cleanup(ochassis, 0);
+ memcpy(ochassis, chassis, sizeof(struct lldpd_chassis));
+ /* Restore saved values */
+ ochassis->c_refcount = refcount;
+ ochassis->c_index = index;
+ memcpy(&ochassis->c_entries, &entries, sizeof(entries));
+}
+
+
static void
lldpd_recv_all(struct lldpd *cfg)
{
struct lldpd_client *client, *client_next;
fd_set rfds;
struct timeval tv;
- struct sockaddr_ll from;
- socklen_t fromlen;
#ifdef USE_SNMP
int fakeblock = 0;
struct timeval *tvp = &tv;
TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) {
/* Ignore if interface is down */
- if (((hardware->h_flags & IFF_UP) == 0) ||
- ((hardware->h_flags & IFF_RUNNING) == 0))
+ if ((hardware->h_flags & IFF_RUNNING) == 0)
continue;
- FD_SET(hardware->h_raw, &rfds);
- if (nfds < hardware->h_raw)
- nfds = hardware->h_raw;
+ /* This is quite expensive but we don't rely on internal
+ * structure of fd_set. */
+ for (n = 0; n < FD_SETSIZE; n++)
+ if (FD_ISSET(n, &hardware->h_recvfds)) {
+ FD_SET(n, &rfds);
+ if (nfds < n)
+ nfds = n;
+ }
}
TAILQ_FOREACH(client, &cfg->g_clients, next) {
FD_SET(client->fd, &rfds);
}
#endif /* USE_SNMP */
TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) {
- /* We could have received something on _real_
- * interface. However, even in this case, this could be
- * just an outgoing packet. We will try to handle both
- * cases, but maybe not in the same select. */
- if (FD_ISSET(hardware->h_raw, &rfds)) {
- if ((buffer = (char *)malloc(
- hardware->h_mtu)) == NULL) {
- LLOG_WARN("failed to alloc reception buffer");
- continue;
- }
- fromlen = sizeof(from);
- if ((n = recvfrom(
- hardware->h_raw,
- buffer,
- hardware->h_mtu, 0,
- (struct sockaddr *)&from,
- &fromlen)) == -1) {
- LLOG_WARN("error while receiving frame on %s",
- hardware->h_ifname);
- hardware->h_rx_discarded_cnt++;
- free(buffer);
- continue;
- }
- if (from.sll_pkttype == PACKET_OUTGOING) {
- free(buffer);
- continue;
- }
- hardware->h_rx_cnt++;
- lldpd_decode(cfg, buffer, n, hardware);
+ for (n = 0; n < FD_SETSIZE; n++)
+ if ((FD_ISSET(n, &hardware->h_recvfds)) &&
+ (FD_ISSET(n, &rfds))) break;
+ if (n == FD_SETSIZE) continue;
+ if ((buffer = (char *)malloc(
+ hardware->h_mtu)) == NULL) {
+ LLOG_WARN("failed to alloc reception buffer");
+ continue;
+ }
+ if ((n = hardware->h_ops->recv(cfg, hardware,
+ n, buffer, hardware->h_mtu)) == -1) {
free(buffer);
+ continue;
}
-
+ hardware->h_rx_cnt++;
+ lldpd_decode(cfg, buffer, n, hardware);
+ free(buffer);
+ break;
}
if (FD_ISSET(cfg->g_ctl, &rfds)) {
if (ctl_accept(cfg, cfg->g_ctl) == -1)
cfg->g_lastsent = time(NULL);
TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) {
/* Ignore if interface is down */
- if (((hardware->h_flags & IFF_UP) == 0) ||
- ((hardware->h_flags & IFF_RUNNING) == 0))
+ if ((hardware->h_flags & IFF_RUNNING) == 0)
continue;
for (i=0; cfg->g_protocols[i].mode != 0; i++) {
#endif
static void
-lldpd_loop(struct lldpd *cfg)
+lldpd_update_localchassis(struct lldpd *cfg)
{
- struct ifaddrs *ifap, *ifa;
- struct sockaddr_ll *sdl;
- struct lldpd_hardware *hardware;
+ struct utsname un;
+ char *hp;
int f;
char status;
- struct utsname *un;
- char *hp;
+ struct lldpd_hardware *hardware;
/* Set system name and description */
- if ((un = (struct utsname*)malloc(sizeof(struct utsname))) == NULL)
- fatal(NULL);
- if (uname(un) != 0)
+ if (uname(&un) != 0)
fatal("failed to get system information");
if ((hp = priv_gethostbyname()) == NULL)
fatal("failed to get system name");
if ((LOCAL_CHASSIS(cfg)->c_name = strdup(hp)) == NULL)
fatal(NULL);
if (asprintf(&LOCAL_CHASSIS(cfg)->c_descr, "%s %s %s %s",
- un->sysname, un->release, un->version, un->machine) == -1)
+ un.sysname, un.release, un.version, un.machine) == -1)
fatal("failed to set system description");
/* Check forwarding */
- LOCAL_CHASSIS(cfg)->c_cap_enabled = 0;
if ((f = priv_open("/proc/sys/net/ipv4/ip_forward")) >= 0) {
if ((read(f, &status, 1) == 1) && (status == '1')) {
LOCAL_CHASSIS(cfg)->c_cap_enabled = LLDP_CAP_ROUTER;
LOCAL_CHASSIS(cfg)->c_cap_enabled |= LLDP_CAP_TELEPHONE;
lldpd_med(LOCAL_CHASSIS(cfg));
free(LOCAL_CHASSIS(cfg)->c_med_sw);
- LOCAL_CHASSIS(cfg)->c_med_sw = strdup(un->release);
+ LOCAL_CHASSIS(cfg)->c_med_sw = strdup(un.release);
#endif
- free(un);
+ /* Set chassis ID if needed */
+ if ((LOCAL_CHASSIS(cfg)->c_id == NULL) &&
+ (hardware = TAILQ_FIRST(&cfg->g_hardware))) {
+ if ((LOCAL_CHASSIS(cfg)->c_id =
+ malloc(sizeof(hardware->h_lladdr))) == NULL)
+ fatal(NULL);
+ LOCAL_CHASSIS(cfg)->c_id_subtype = LLDP_CHASSISID_SUBTYPE_LLADDR;
+ LOCAL_CHASSIS(cfg)->c_id_len = sizeof(hardware->h_lladdr);
+ memcpy(LOCAL_CHASSIS(cfg)->c_id,
+ hardware->h_lladdr, sizeof(hardware->h_lladdr));
+ }
+}
+
+static void
+lldpd_update_localports(struct lldpd *cfg)
+{
+ struct ifaddrs *ifap;
+ struct lldpd_hardware *hardware;
+ lldpd_ifhandlers ifhs[] = {
+ lldpd_ifh_bond, /* Handle bond */
+ lldpd_ifh_eth, /* Handle classic ethernet interfaces */
+#ifdef ENABLE_DOT1
+ lldpd_ifh_vlan, /* Handle VLAN */
+#endif
+ lldpd_ifh_mgmt, /* Handle management address (if not already handled) */
+ NULL
+ };
+ lldpd_ifhandlers *ifh;
+
+ /* h_flags is set to 0 for each port. If the port is updated, h_flags
+ * will be set to a non-zero value. This will allow us to clean up any
+ * non up-to-date port */
TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries)
hardware->h_flags = 0;
- if (getifaddrs(&ifap) != 0)
- fatal("lldpd_loop: failed to get interface list");
-
LOCAL_CHASSIS(cfg)->c_mgmt.s_addr = INADDR_ANY;
- for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
- if (LOCAL_CHASSIS(cfg)->c_mgmt.s_addr == INADDR_ANY)
- /* Get management address, if available */
- if ((ifa->ifa_addr != NULL) &&
- (ifa->ifa_addr->sa_family == AF_INET)) {
- struct sockaddr_in *sa;
- sa = (struct sockaddr_in *)ifa->ifa_addr;
- if ((ntohl(*(u_int32_t*)&sa->sin_addr) != INADDR_LOOPBACK) &&
- (cfg->g_mgmt_pattern == NULL)) {
- memcpy(&LOCAL_CHASSIS(cfg)->c_mgmt,
- &sa->sin_addr,
- sizeof(struct in_addr));
- LOCAL_CHASSIS(cfg)->c_mgmt_if = if_nametoindex(ifa->ifa_name);
- }
- else if (cfg->g_mgmt_pattern != NULL) {
- char *ip;
- ip = inet_ntoa(sa->sin_addr);
- if (fnmatch(cfg->g_mgmt_pattern,
- ip, 0) == 0) {
- memcpy(&LOCAL_CHASSIS(cfg)->c_mgmt,
- &sa->sin_addr,
- sizeof(struct in_addr));
- LOCAL_CHASSIS(cfg)->c_mgmt_if =
- if_nametoindex(ifa->ifa_name);
- }
- }
- }
-
- if (ifa->ifa_addr == NULL ||
- ifa->ifa_addr->sa_family != PF_PACKET)
- continue;
-
- sdl = (struct sockaddr_ll *)ifa->ifa_addr;
- if (sdl->sll_hatype != ARPHRD_ETHER || !sdl->sll_halen)
- continue;
-
- if (iface_is_bridge(cfg, ifa->ifa_name)) {
- LOCAL_CHASSIS(cfg)->c_cap_enabled |= LLDP_CAP_BRIDGE;
- continue;
- }
-
- if ((iface_is_vlan(cfg, ifa->ifa_name)) ||
- (iface_is_bond(cfg, ifa->ifa_name)))
- continue;
-
- if (!(ifa->ifa_flags & (IFF_MULTICAST|IFF_BROADCAST)))
- continue;
-
- if (iface_is_wireless(cfg, ifa->ifa_name))
- LOCAL_CHASSIS(cfg)->c_cap_enabled |= LLDP_CAP_WLAN;
-
- if (lldpd_hardware_add(cfg, ifa) == NULL)
- LLOG_WARNX("failed to allocate port %s, skip it",
- ifa->ifa_name);
- }
-
+ if (getifaddrs(&ifap) != 0)
+ fatal("lldpd_update_localports: failed to get interface list");
+
+ /* We will run the list of interfaces through a list of interface
+ * handlers. Each handler will create or update some hardware port (and
+ * will set h_flags to a non zero value. The handler can use the list of
+ * interfaces but this is not mandatory. If the interface handler
+ * handles an interface from the list, it should set ifa_flags to 0 to
+ * let know the other handlers that it took care of this interface. This
+ * means that more specific handlers should be before less specific
+ * ones. */
+ for (ifh = ifhs; *ifh != NULL; ifh++)
+ (*ifh)(cfg, ifap);
freeifaddrs(ifap);
+}
+static void
+lldpd_loop(struct lldpd *cfg)
+{
+ /* Main loop.
+
+ 1. Update local ports information
+ 2. Clean unwanted (removed) local ports
+ 3. Update local chassis information
+ 4. Send packets
+ 5. Receive packets
+ */
+ LOCAL_CHASSIS(cfg)->c_cap_enabled = 0;
+ lldpd_update_localports(cfg);
lldpd_cleanup(cfg);
-
+ lldpd_update_localchassis(cfg);
lldpd_send_all(cfg);
lldpd_recv_all(cfg);
}
static void
lldpd_exit()
{
- struct lldpd_hardware *hardware;
+ struct lldpd_hardware *hardware, *hardware_next;
close(gcfg->g_ctl);
priv_ctl_cleanup();
- TAILQ_FOREACH(hardware, &gcfg->g_hardware, h_entries) {
- if (INTERFACE_OPENED(hardware))
- lldpd_iface_close(gcfg, hardware);
+ for (hardware = TAILQ_FIRST(&gcfg->g_hardware); hardware != NULL;
+ hardware = hardware_next) {
+ hardware_next = TAILQ_NEXT(hardware, h_entries);
+ lldpd_hardware_cleanup(gcfg, hardware);
}
#ifdef USE_SNMP
if (gcfg->g_snmp)
projects / thirdparty / lldpd.git / blobdiff