Allow cli session changes to happen if the session is timing out
This commit is contained in:
David Parrish
parent
f7a59cd6cc
commit
5779efc7ae
3 changed files with 112 additions and 112 deletions
216
cluster.c
216
cluster.c
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@ -1,6 +1,6 @@
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// L2TPNS Clustering Stuff
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char const *cvs_id_cluster = "$Id: cluster.c,v 1.9 2004-07-11 07:57:35 bodea Exp $";
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char const *cvs_id_cluster = "$Id: cluster.c,v 1.10 2004-08-02 06:06:28 fred_nerk Exp $";
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#include <stdio.h>
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#include <sys/file.h>
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@ -77,65 +77,68 @@ int rle_compress(u8 ** src_p, int ssize, u8 *dst, int dsize);
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//
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int cluster_init()
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{
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struct sockaddr_in addr;
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struct sockaddr_in interface_addr;
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struct ip_mreq mreq;
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struct ifreq ifr;
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int opt = 0;
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struct sockaddr_in addr;
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struct sockaddr_in interface_addr;
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struct ip_mreq mreq;
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struct ifreq ifr;
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int opt = 0;
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config->cluster_undefined_sessions = MAXSESSION-1;
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config->cluster_undefined_tunnels = MAXTUNNEL-1;
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config->cluster_undefined_sessions = MAXSESSION-1;
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config->cluster_undefined_tunnels = MAXTUNNEL-1;
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if (!config->cluster_address)
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return 0;
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if (!*config->cluster_interface)
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return 0;
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if (!config->cluster_address)
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return 0;
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if (!*config->cluster_interface)
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return 0;
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cluster_sockfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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cluster_sockfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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memset(&addr, 0, sizeof(addr));
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addr.sin_family = AF_INET;
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addr.sin_port = htons(CLUSTERPORT);
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addr.sin_addr.s_addr = INADDR_ANY;
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setsockopt(cluster_sockfd, SOL_SOCKET, SO_REUSEADDR, &addr, sizeof(addr));
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memset(&addr, 0, sizeof(addr));
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addr.sin_family = AF_INET;
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addr.sin_port = htons(CLUSTERPORT);
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addr.sin_addr.s_addr = INADDR_ANY;
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setsockopt(cluster_sockfd, SOL_SOCKET, SO_REUSEADDR, &addr, sizeof(addr));
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if (bind(cluster_sockfd, (void *) &addr, sizeof(addr)) < 0)
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{
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log(0, 0, 0, 0, "Failed to bind cluster socket: %s\n", strerror(errno));
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return -1;
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}
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if (bind(cluster_sockfd, (void *) &addr, sizeof(addr)) < 0)
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{
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log(0, 0, 0, 0, "Failed to bind cluster socket: %s\n", strerror(errno));
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return -1;
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}
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strcpy(ifr.ifr_name, config->cluster_interface);
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if (ioctl(cluster_sockfd, SIOCGIFADDR, &ifr) < 0) {
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log(0, 0, 0, 0, "Failed to get interface address for (%s): %s\n", config->cluster_interface, strerror(errno));
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return -1;
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}
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strcpy(ifr.ifr_name, config->cluster_interface);
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if (ioctl(cluster_sockfd, SIOCGIFADDR, &ifr) < 0)
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{
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log(0, 0, 0, 0, "Failed to get interface address for (%s): %s\n", config->cluster_interface, strerror(errno));
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return -1;
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}
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memcpy(&interface_addr, &ifr.ifr_addr, sizeof(interface_addr) );
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my_address = interface_addr.sin_addr.s_addr;
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memcpy(&interface_addr, &ifr.ifr_addr, sizeof(interface_addr));
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my_address = interface_addr.sin_addr.s_addr;
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// Join multicast group.
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mreq.imr_multiaddr.s_addr = config->cluster_address;
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mreq.imr_interface = interface_addr.sin_addr;
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// Join multicast group.
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mreq.imr_multiaddr.s_addr = config->cluster_address;
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mreq.imr_interface = interface_addr.sin_addr;
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opt = 0; // Turn off multicast loopback.
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setsockopt(cluster_sockfd, IPPROTO_IP, IP_MULTICAST_LOOP, &opt, sizeof(opt));
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opt = 0; // Turn off multicast loopback.
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setsockopt(cluster_sockfd, IPPROTO_IP, IP_MULTICAST_LOOP, &opt, sizeof(opt));
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if (setsockopt(cluster_sockfd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) {
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log(0, 0, 0, 0, "Failed to setsockopt (join mcast group): %s\n", strerror(errno));
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return -1;
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}
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if (setsockopt(cluster_sockfd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0)
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{
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log(0, 0, 0, 0, "Failed to setsockopt (join mcast group): %s\n", strerror(errno));
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return -1;
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}
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if (setsockopt (cluster_sockfd, IPPROTO_IP, IP_MULTICAST_IF, &interface_addr, sizeof(interface_addr)) < 0) {
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log(0, 0, 0, 0, "Failed to setsockopt (set mcast interface): %s\n", strerror(errno));
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return -1;
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}
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if (setsockopt (cluster_sockfd, IPPROTO_IP, IP_MULTICAST_IF, &interface_addr, sizeof(interface_addr)) < 0)
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{
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log(0, 0, 0, 0, "Failed to setsockopt (set mcast interface): %s\n", strerror(errno));
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return -1;
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}
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config->cluster_last_hb = TIME;
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config->cluster_seq_number = -1;
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config->cluster_last_hb = TIME;
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config->cluster_seq_number = -1;
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return cluster_sockfd;
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return cluster_sockfd;
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}
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@ -146,24 +149,24 @@ int cluster_init()
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int cluster_send_data(void *data, int datalen)
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{
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struct sockaddr_in addr = {0};
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struct sockaddr_in addr = {0};
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if (!cluster_sockfd) return -1;
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if (!config->cluster_address) return 0;
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if (!cluster_sockfd) return -1;
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if (!config->cluster_address) return 0;
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addr.sin_addr.s_addr = config->cluster_address;
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addr.sin_port = htons(CLUSTERPORT);
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addr.sin_family = AF_INET;
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addr.sin_addr.s_addr = config->cluster_address;
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addr.sin_port = htons(CLUSTERPORT);
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addr.sin_family = AF_INET;
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log(5,0,0,0, "Cluster send data: %d bytes\n", datalen);
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log(5,0,0,0, "Cluster send data: %d bytes\n", datalen);
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if (sendto(cluster_sockfd, data, datalen, MSG_NOSIGNAL, (void *) &addr, sizeof(addr)) < 0)
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{
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log(0, 0, 0, 0, "sendto: %s\n", strerror(errno));
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return -1;
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}
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if (sendto(cluster_sockfd, data, datalen, MSG_NOSIGNAL, (void *) &addr, sizeof(addr)) < 0)
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{
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log(0, 0, 0, 0, "sendto: %s\n", strerror(errno));
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return -1;
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}
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return 0;
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return 0;
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}
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//
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@ -212,27 +215,27 @@ void cluster_uptodate(void)
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//
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int peer_send_data(u32 peer, char * data, int size)
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{
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struct sockaddr_in addr = {0};
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struct sockaddr_in addr = {0};
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if (!cluster_sockfd) return -1;
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if (!config->cluster_address) return 0;
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if (!cluster_sockfd) return -1;
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if (!config->cluster_address) return 0;
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if (!peer) // Odd??
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if (!peer) // Odd??
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return -1;
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addr.sin_addr.s_addr = peer;
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addr.sin_port = htons(CLUSTERPORT);
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addr.sin_family = AF_INET;
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addr.sin_addr.s_addr = peer;
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addr.sin_port = htons(CLUSTERPORT);
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addr.sin_family = AF_INET;
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log_hex(5, "Peer send", data, size);
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log_hex(5, "Peer send", data, size);
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if (sendto(cluster_sockfd, data, size, MSG_NOSIGNAL, (void *) &addr, sizeof(addr)) < 0)
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{
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log(0, 0, 0, 0, "sendto: %s\n", strerror(errno));
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return -1;
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}
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if (sendto(cluster_sockfd, data, size, MSG_NOSIGNAL, (void *) &addr, sizeof(addr)) < 0)
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{
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log(0, 0, 0, 0, "sendto: %s\n", strerror(errno));
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return -1;
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}
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return 0;
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return 0;
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}
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//
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@ -328,18 +331,19 @@ int master_garden_packet(sessionidt s, char *data, int size)
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//
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static void send_heartbeat(int seq, char * data, int size)
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{
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int i;
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int i;
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if (size > sizeof(past_hearts[0].data)) {
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log(0,0,0,0, "Tried to heartbeat something larger than the maximum packet!\n");
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kill(0, SIGTERM);
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exit(1);
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}
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i = seq % HB_HISTORY_SIZE;
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past_hearts[i].seq = seq;
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past_hearts[i].size = size;
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memcpy(&past_hearts[i].data, data, size); // Save it.
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cluster_send_data(data, size);
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if (size > sizeof(past_hearts[0].data))
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{
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log(0,0,0,0, "Tried to heartbeat something larger than the maximum packet!\n");
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kill(0, SIGTERM);
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exit(1);
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}
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i = seq % HB_HISTORY_SIZE;
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past_hearts[i].seq = seq;
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past_hearts[i].size = size;
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memcpy(&past_hearts[i].data, data, size); // Save it.
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cluster_send_data(data, size);
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}
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//
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@ -474,21 +478,21 @@ void cluster_check_master(void)
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if (config->cluster_iam_master)
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return; // Only runs on the slaves...
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// If the master is late (missed 2 hearbeats by a second and a
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// hair) it may be that the switch has dropped us from the
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// multicast group, try unicasting one probe to the master
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// which will hopefully respond with a unicast heartbeat that
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// will allow us to limp along until the querier next runs.
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// If the master is late (missed 2 hearbeats by a second and a
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// hair) it may be that the switch has dropped us from the
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// multicast group, try unicasting one probe to the master
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// which will hopefully respond with a unicast heartbeat that
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// will allow us to limp along until the querier next runs.
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if (TIME > (config->cluster_last_hb + 2 * config->cluster_hb_interval + 11))
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{
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if (!probed && config->cluster_master_address)
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{
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probed = 1;
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log(1, 0, 0, 0, "Heartbeat from master %.1fs late, probing...\n",
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0.1 * (TIME - (config->cluster_last_hb + config->cluster_hb_interval)));
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0.1 * (TIME - (config->cluster_last_hb + config->cluster_hb_interval)));
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peer_send_message(config->cluster_master_address,
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C_LASTSEEN, config->cluster_seq_number, NULL, 0);
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C_LASTSEEN, config->cluster_seq_number, NULL, 0);
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}
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} else { // We got a recent heartbeat; reset the probe flag.
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probed = 0;
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@ -611,7 +615,7 @@ void cluster_check_master(void)
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config->cluster_undefined_sessions = 0;
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config->cluster_undefined_tunnels = 0;
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config->cluster_iam_uptodate = 1; // assume all peers are up-to-date
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config->cluster_iam_uptodate = 1; // assume all peers are up-to-date
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// FIXME. We need to fix up the tunnel control message
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// queue here! There's a number of other variables we
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@ -916,18 +920,16 @@ int cluster_add_peer(u32 peer, time_t basetime, pingt *pp, int size)
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int i;
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u32 clusterid;
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pingt p;
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// Allow for backward compatability.
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// Just the ping packet into a new structure to allow
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// for the possibility that we might have received
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// more or fewer elements than we were expecting.
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// Allow for backward compatability.
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// Just the ping packet into a new structure to allow
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// for the possibility that we might have received
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// more or fewer elements than we were expecting.
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if (size > sizeof(p))
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size = sizeof(p);
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memset( (void*) &p, 0, sizeof(p) );
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memcpy( (void*) &p, (void*) pp, size);
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clusterid = p.addr;
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if (clusterid != config->bind_address)
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@ -949,9 +951,9 @@ int cluster_add_peer(u32 peer, time_t basetime, pingt *pp, int size)
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break;
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}
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// Is this the master shutting down??
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// Is this the master shutting down??
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if (peer == config->cluster_master_address && !basetime) {
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log(3,0,0,0, "Master %s shutting down...\n", inet_toa(config->cluster_master_address));
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log(3,0,0,0, "Master %s shutting down...\n", inet_toa(config->cluster_master_address));
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config->cluster_master_address = 0;
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config->cluster_last_hb = 0; // Force an election.
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cluster_check_master();
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@ -1177,17 +1179,17 @@ static int cluster_process_heartbeat(u8 * data, int size, int more, u8 * p, u32
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if (h->interval != config->cluster_hb_interval)
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{
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log(2, 0, 0, 0, "Master set ping/heartbeat interval to %u (was %u)\n",
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h->interval, config->cluster_hb_interval);
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h->interval, config->cluster_hb_interval);
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config->cluster_hb_interval = h->interval;
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config->cluster_hb_interval = h->interval;
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}
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if (h->timeout != config->cluster_hb_timeout)
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{
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log(2, 0, 0, 0, "Master set heartbeat timeout to %u (was %u)\n",
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h->timeout, config->cluster_hb_timeout);
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h->timeout, config->cluster_hb_timeout);
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config->cluster_hb_timeout = h->timeout;
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config->cluster_hb_timeout = h->timeout;
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}
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}
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@ -1400,17 +1402,17 @@ int cmd_show_cluster(struct cli_def *cli, char *command, char **argv, int argc)
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if (CLI_HELP_REQUESTED)
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return CLI_HELP_NO_ARGS;
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cli_print(cli, "Cluster status : %s", config->cluster_iam_master ? "Master" : "Slave" );
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cli_print(cli, "Cluster status : %s", config->cluster_iam_master ? "Master" : "Slave" );
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cli_print(cli, "My address : %s", inet_toa(my_address));
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cli_print(cli, "VIP address : %s", inet_toa(config->bind_address));
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cli_print(cli, "Multicast address: %s", inet_toa(config->cluster_address));
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cli_print(cli, "Multicast i'face : %s", config->cluster_interface);
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if (!config->cluster_iam_master) {
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if (!config->cluster_iam_master) {
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cli_print(cli, "My master : %s (last heartbeat %.1f seconds old)",
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config->cluster_master_address ? inet_toa(config->cluster_master_address) : "Not defined",
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0.1 * (TIME - config->cluster_last_hb));
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cli_print(cli, "Uptodate : %s", config->cluster_iam_uptodate ? "Yes" : "No");
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cli_print(cli, "Uptodate : %s", config->cluster_iam_uptodate ? "Yes" : "No");
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cli_print(cli, "Next sequence number expected: %d", config->cluster_seq_number);
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cli_print(cli, "%d sessions undefined of %d", config->cluster_undefined_sessions, config->cluster_highest_sessionid);
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cli_print(cli, "%d tunnels undefined of %d", config->cluster_undefined_tunnels, config->cluster_highest_tunnelid);
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