X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/0e8cec8fc18f2f3ce32de45e9c54ba17008b1985..40c19d29ab12ce32677670fa2d39de69f5777c5e:/cluster.c diff --git a/cluster.c b/cluster.c index 9277f41..5d2b5b8 100644 --- a/cluster.c +++ b/cluster.c @@ -17,10 +17,12 @@ #include #include +#include "dhcp6.h" #include "l2tpns.h" #include "cluster.h" #include "util.h" #include "tbf.h" +#include "pppoe.h" #ifdef BGP #include "bgp.h" @@ -303,10 +305,40 @@ static int _forward_packet(uint8_t *data, int size, in_addr_t addr, int port, in // // The master just processes the payload as if it had // received it off the tun device. -// -int master_forward_packet(uint8_t *data, int size, in_addr_t addr, int port) +//(note: THIS ROUTINE WRITES TO pack[-6]). +int master_forward_packet(uint8_t *data, int size, in_addr_t addr, uint16_t port, uint16_t indexudp) { - return _forward_packet(data, size, addr, port, C_FORWARD); + uint8_t *p = data - (3 * sizeof(uint32_t)); + uint8_t *psave = p; + uint32_t indexandport = port | ((indexudp << 16) & 0xFFFF0000); + + if (!config->cluster_master_address) // No election has been held yet. Just skip it. + return -1; + + LOG(4, 0, 0, "Forwarding packet from %s to master (size %d)\n", fmtaddr(addr, 0), size); + + STAT(c_forwarded); + add_type(&p, C_FORWARD, addr, (uint8_t *) &indexandport, sizeof(indexandport)); + + return peer_send_data(config->cluster_master_address, psave, size + (3 * sizeof(uint32_t))); +} + +// Forward PPPOE packet to the master. +//(note: THIS ROUTINE WRITES TO pack[-4]). +int master_forward_pppoe_packet(uint8_t *data, int size, uint8_t codepad) +{ + uint8_t *p = data - (2 * sizeof(uint32_t)); + uint8_t *psave = p; + + if (!config->cluster_master_address) // No election has been held yet. Just skip it. + return -1; + + LOG(4, 0, 0, "Forward PPPOE packet to master, code %s (size %d)\n", get_string_codepad(codepad), size); + + STAT(c_forwarded); + add_type(&p, C_PPPOE_FORWARD, codepad, NULL, 0); + + return peer_send_data(config->cluster_master_address, psave, size + (2 * sizeof(uint32_t))); } // Forward a DAE RADIUS packet to the master. @@ -606,6 +638,7 @@ void cluster_check_master(void) // to become a master!!! config->cluster_iam_master = 1; + pppoe_send_garp(); // gratuitous arp of the pppoe interface LOG(0, 0, 0, "I am declaring myself the master!\n"); @@ -810,7 +843,7 @@ static int hb_add_type(uint8_t **p, int type, int id) // Failed to compress : Fall through. } case C_SESSION: - add_type(p, C_SESSION, id, (uint8_t *) &session[id], sizeof(sessiont)); + add_type(p, C_SESSION, id, (uint8_t *) &session[id], sizeof(sessiont)); break; case C_CBUNDLE: { // Compressed C_BUNDLE @@ -851,7 +884,7 @@ static int hb_add_type(uint8_t **p, int type, int id) // Failed to compress : Fall through. } case C_TUNNEL: - add_type(p, C_TUNNEL, id, (uint8_t *) &tunnel[id], sizeof(tunnelt)); + add_type(p, C_TUNNEL, id, (uint8_t *) &tunnel[id], sizeof(tunnelt)); break; default: LOG(0, 0, 0, "Found an invalid type in heart queue! (%d)\n", type); @@ -987,54 +1020,27 @@ static int type_changed(int type, int id) { int i; - for (i = 0 ; i < config->cluster_num_changes ; ++i) - if ( cluster_changes[i].id == id && - cluster_changes[i].type == type) - return 0; // Already marked for change. - - cluster_changes[i].type = type; - cluster_changes[i].id = id; - ++config->cluster_num_changes; - - if (config->cluster_num_changes > MAX_CHANGES) - cluster_heartbeat(); // flush now - - return 1; -} - -// The deleted session, must be before the new session -int cluster_listinvert_session(int sidnew, int sidtodel) -{ - int i, inew = 0; - for (i = 0 ; i < config->cluster_num_changes ; ++i) { - if ( cluster_changes[i].id == sidtodel && cluster_changes[i].type == C_CSESSION) - return 0; // Deleted session already before the new session. - - if ( cluster_changes[i].id == sidnew && cluster_changes[i].type == C_CSESSION) + if ( cluster_changes[i].id == id && cluster_changes[i].type == type) { - if (session[i].tunnel != T_FREE) - inew = i; - else - return 0; // This a free session no invert. - + // Already marked for change, remove it + --config->cluster_num_changes; + memmove(&cluster_changes[i], + &cluster_changes[i+1], + (config->cluster_num_changes - i) * sizeof(cluster_changes[i])); break; } } - for ( ; i < config->cluster_num_changes ; ++i) - { - if ( cluster_changes[i].id == sidtodel && cluster_changes[i].type == C_CSESSION) - { - // Reverse position - cluster_changes[i].id = sidnew; - cluster_changes[inew].id = sidtodel; - return 1; - } - } + cluster_changes[config->cluster_num_changes].type = type; + cluster_changes[config->cluster_num_changes].id = id; + ++config->cluster_num_changes; - return 0; + if (config->cluster_num_changes > MAX_CHANGES) + cluster_heartbeat(); // flush now + + return 1; } // A particular session has been changed! @@ -1499,18 +1505,11 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t int i, type; int hb_ver = more; -#ifdef LAC -#if HB_VERSION != 7 -# error "need to update cluster_process_heartbeat()" -#endif -#else -#if HB_VERSION != 6 +#if HB_VERSION != 8 # error "need to update cluster_process_heartbeat()" -#endif #endif - - // we handle versions 5 through 7 + // we handle versions 5 through 8 if (hb_ver < 5 || hb_ver > HB_VERSION) { LOG(0, 0, 0, "Received a heartbeat version that I don't support (%d)!\n", hb_ver); return -1; // Ignore it?? @@ -1683,10 +1682,20 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t break; } - if (size != sizeof(sessiont) ) { // Ouch! Very very bad! - LOG(0, 0, 0, "DANGER: Received a CSESSION that didn't decompress correctly!\n"); - // Now what? Should exit! No-longer up to date! - break; + if (size != sizeof(sessiont)) { // Ouch! Very very bad! + if ((hb_ver < HB_VERSION) && (size < sizeof(sessiont))) + { + // set to 0 the unused variables + memset(&c[size], 0, (sizeof(sessiont) - size)); + LOG(3, 0, 0, "WARNING: Received a CSESSION from %s hb_version %d != %d current version !\n", fmtaddr(addr, 2), hb_ver, HB_VERSION); + // New feature not activated until the master has not been upgraded. + } + else + { + LOG(0, 0, 0, "DANGER: Received a CSESSION that didn't decompress correctly!\n"); + // Now what? Should exit! No-longer up to date! + break; + } } cluster_recv_session(more, c); @@ -1722,12 +1731,8 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t size = rle_decompress((uint8_t **) &p, s, c, sizeof(c)); s -= (p - orig_p); -#ifdef LAC if ( ((hb_ver >= HB_VERSION) && (size != sizeof(tunnelt))) || ((hb_ver < HB_VERSION) && (size > sizeof(tunnelt))) ) -#else - if (size != sizeof(tunnelt) ) -#endif { // Ouch! Very very bad! LOG(0, 0, 0, "DANGER: Received a CTUNNEL that didn't decompress correctly!\n"); // Now what? Should exit! No-longer up to date! @@ -1850,9 +1855,11 @@ int processcluster(uint8_t *data, int size, in_addr_t addr) else { struct sockaddr_in a; + uint16_t indexudp; a.sin_addr.s_addr = more; - a.sin_port = *(int *) p; + a.sin_port = (*(int *) p) & 0xFFFF; + indexudp = ((*(int *) p) >> 16) & 0xFFFF; s -= sizeof(int); p += sizeof(int); @@ -1867,10 +1874,21 @@ int processcluster(uint8_t *data, int size, in_addr_t addr) processdae(p, s, &a, sizeof(a), &local); } else - processudp(p, s, &a); + processudp(p, s, &a, indexudp); return 0; } + case C_PPPOE_FORWARD: + if (!config->cluster_iam_master) + { + LOG(0, 0, 0, "I'm not the master, but I got a C_PPPOE_FORWARD from %s?\n", fmtaddr(addr, 0)); + return -1; + } + else + { + pppoe_process_forward(p, s, addr); + return 0; + } case C_MPPP_FORWARD: // Receive a MPPP packet from a slave. @@ -1947,7 +1965,7 @@ shortpacket: //==================================================================================================== -int cmd_show_cluster(struct cli_def *cli, char *command, char **argv, int argc) +int cmd_show_cluster(struct cli_def *cli, const char *command, char **argv, int argc) { int i;