void netif_set_netmask(struct netif *netif, struct ip_addr *netmask) { ip_addr_set(&(netif->netmask), netmask); LWIP_DEBUGF(NETIF_DEBUG | DBG_TRACE | DBG_STATE | 3, ("netif: netmask of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", netif->name[0], netif->name[1], ip4_addr1(&netif->netmask), ip4_addr2(&netif->netmask), ip4_addr3(&netif->netmask), ip4_addr4(&netif->netmask))); }
/** * Change the default gateway for a network interface * * @param netif the network interface to change * @param gw the new default gateway * * @note call netif_set_addr() if you also want to change ip address and netmask */ void netif_set_gw(struct netif *netif, struct ip_addr *gw) { ip_addr_set(&(netif->gw), gw); LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE | 3, ("netif: GW address of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", netif->name[0], netif->name[1], ip4_addr1(&netif->gw), ip4_addr2(&netif->gw), ip4_addr3(&netif->gw), ip4_addr4(&netif->gw))); }
void ip_debug_print(struct pbuf *p) { struct ip_hdr *iphdr = p->payload; u8_t *payload; payload = (u8_t *)iphdr + IP_HLEN; LWIP_DEBUGF(IP_DEBUG, ("IP header:\n")); LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); LWIP_DEBUGF(IP_DEBUG, ("|%2"S16_F" |%2"S16_F" | 0x%02"X16_F" | %5"U16_F" | (v, hl, tos, len)\n", IPH_V(iphdr), IPH_HL(iphdr), IPH_TOS(iphdr), ntohs(IPH_LEN(iphdr)))); LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); LWIP_DEBUGF(IP_DEBUG, ("| %5"U16_F" |%"U16_F"%"U16_F"%"U16_F"| %4"U16_F" | (id, flags, offset)\n", ntohs(IPH_ID(iphdr)), ntohs(IPH_OFFSET(iphdr)) >> 15 & 1, ntohs(IPH_OFFSET(iphdr)) >> 14 & 1, ntohs(IPH_OFFSET(iphdr)) >> 13 & 1, ntohs(IPH_OFFSET(iphdr)) & IP_OFFMASK)); LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); LWIP_DEBUGF(IP_DEBUG, ("| %3"U16_F" | %3"U16_F" | 0x%04"X16_F" | (ttl, proto, chksum)\n", IPH_TTL(iphdr), IPH_PROTO(iphdr), ntohs(IPH_CHKSUM(iphdr)))); LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); LWIP_DEBUGF(IP_DEBUG, ("| %3"U16_F" | %3"U16_F" | %3"U16_F" | %3"U16_F" | (src)\n", ip4_addr1(&iphdr->src), ip4_addr2(&iphdr->src), ip4_addr3(&iphdr->src), ip4_addr4(&iphdr->src))); LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); LWIP_DEBUGF(IP_DEBUG, ("| %3"U16_F" | %3"U16_F" | %3"U16_F" | %3"U16_F" | (dest)\n", ip4_addr1(&iphdr->dest), ip4_addr2(&iphdr->dest), ip4_addr3(&iphdr->dest), ip4_addr4(&iphdr->dest))); LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); }
void netif_set_ipaddr(struct netif *netif, struct ip_addr *ipaddr) { /* TODO: Handling of obsolete pcbs */ /* See: http://mail.gnu.org/archive/html/lwip-users/2003-03/msg00118.html */ #if LWIP_TCP struct tcp_pcb *pcb; struct tcp_pcb_listen *lpcb; /* address is actually being changed? */ if ((ip_addr_cmp(ipaddr, &(netif->ip_addr))) == 0) { /* extern struct tcp_pcb *tcp_active_pcbs; defined by tcp.h */ LWIP_DEBUGF(NETIF_DEBUG | 1, ("netif_set_ipaddr: netif address being changed\n")); pcb = tcp_active_pcbs; while (pcb != NULL) { /* PCB bound to current local interface address? */ if (ip_addr_cmp(&(pcb->local_ip), &(netif->ip_addr))) { /* this connection must be aborted */ struct tcp_pcb *next = pcb->next; LWIP_DEBUGF(NETIF_DEBUG | 1, ("netif_set_ipaddr: aborting TCP pcb %p\n", (void *)pcb)); tcp_abort(pcb); pcb = next; } else { pcb = pcb->next; } } for (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) { /* PCB bound to current local interface address? */ if (ip_addr_cmp(&(lpcb->local_ip), &(netif->ip_addr))) { /* The PCB is listening to the old ipaddr and * is set to listen to the new one instead */ ip_addr_set(&(lpcb->local_ip), ipaddr); } } } #endif ip_addr_set(&(netif->ip_addr), ipaddr); #if 0 /* only allowed for Ethernet interfaces TODO: how can we check? */ /** For Ethernet network interfaces, we would like to send a * "gratuitous ARP"; this is an ARP packet sent by a node in order * to spontaneously cause other nodes to update an entry in their * ARP cache. From RFC 3220 "IP Mobility Support for IPv4" section 4.6. */ etharp_query(netif, ipaddr, NULL); #endif LWIP_DEBUGF(NETIF_DEBUG | DBG_TRACE | DBG_STATE | 3, ("netif: IP address of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", netif->name[0], netif->name[1], ip4_addr1(&netif->ip_addr), ip4_addr2(&netif->ip_addr), ip4_addr3(&netif->ip_addr), ip4_addr4(&netif->ip_addr))); }
/** * Change the IP address of a network interface * * @param netif the network interface to change * @param ipaddr the new IP address * * @note call netif_set_addr() if you also want to change netmask and * default gateway */ void netif_set_ipaddr(struct netif *netif, struct ip_addr *ipaddr) { /* TODO: Handling of obsolete pcbs */ /* See: http://mail.gnu.org/archive/html/lwip-users/2003-03/msg00118.html */ #if LWIP_TCP struct tcp_pcb *pcb; struct tcp_pcb_listen *lpcb; /* address is actually being changed? */ if ((ip_addr_cmp(ipaddr, &(netif->ip_addr))) == 0) { /* extern struct tcp_pcb *tcp_active_pcbs; defined by tcp.h */ LWIP_DEBUGF(NETIF_DEBUG | 1, ("netif_set_ipaddr: netif address being changed\n")); pcb = tcp_active_pcbs; while (pcb != NULL) { /* PCB bound to current local interface address? */ if (ip_addr_cmp(&(pcb->local_ip), &(netif->ip_addr))) { /* this connection must be aborted */ struct tcp_pcb *next = pcb->next; LWIP_DEBUGF(NETIF_DEBUG | 1, ("netif_set_ipaddr: aborting TCP pcb %p\n", (void *)pcb)); tcp_abort(pcb); pcb = next; } else { pcb = pcb->next; } } for (lpcb = tcp_listen_pcbs.listen_pcbs; lpcb != NULL; lpcb = lpcb->next) { /* PCB bound to current local interface address? */ if ((!(ip_addr_isany(&(lpcb->local_ip)))) && (ip_addr_cmp(&(lpcb->local_ip), &(netif->ip_addr)))) { /* The PCB is listening to the old ipaddr and * is set to listen to the new one instead */ ip_addr_set(&(lpcb->local_ip), ipaddr); } } } #endif snmp_delete_ipaddridx_tree(netif); snmp_delete_iprteidx_tree(0,netif); /* set new IP address to netif */ ip_addr_set(&(netif->ip_addr), ipaddr); snmp_insert_ipaddridx_tree(netif); snmp_insert_iprteidx_tree(0,netif); LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE | 3, ("netif: IP address of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", netif->name[0], netif->name[1], ip4_addr1(&netif->ip_addr), ip4_addr2(&netif->ip_addr), ip4_addr3(&netif->ip_addr), ip4_addr4(&netif->ip_addr))); }
void wl_set_ipconfig(unsigned int ipaddr, unsigned int netmask, unsigned int gateway, unsigned int dnsserv) { UserParam.cfg.IPCfg.Ip[0] = ip4_addr1(&ipaddr); UserParam.cfg.IPCfg.Ip[1] = ip4_addr2(&ipaddr); UserParam.cfg.IPCfg.Ip[2] = ip4_addr3(&ipaddr); UserParam.cfg.IPCfg.Ip[3] = ip4_addr4(&ipaddr); UserParam.cfg.IPCfg.Netmask[0] = ip4_addr1(&netmask); UserParam.cfg.IPCfg.Netmask[1] = ip4_addr2(&netmask); UserParam.cfg.IPCfg.Netmask[2] = ip4_addr3(&netmask); UserParam.cfg.IPCfg.Netmask[3] = ip4_addr4(&netmask); UserParam.cfg.IPCfg.GateWay[0] = ip4_addr1(&gateway); UserParam.cfg.IPCfg.GateWay[1] = ip4_addr2(&gateway); UserParam.cfg.IPCfg.GateWay[2] = ip4_addr3(&gateway); UserParam.cfg.IPCfg.GateWay[3] = ip4_addr4(&gateway); UserParam.cfg.IPCfg.Dns[0] = ip4_addr1(&dnsserv); UserParam.cfg.IPCfg.Dns[1] = ip4_addr2(&dnsserv); UserParam.cfg.IPCfg.Dns[2] = ip4_addr3(&dnsserv); UserParam.cfg.IPCfg.Dns[3] = ip4_addr4(&dnsserv); }
static void ICACHE_FLASH_ATTR captdnsRecv(void* arg, char *pusrdata, unsigned short length) { struct espconn *conn=(struct espconn *)arg; #else static void ICACHE_FLASH_ATTR captdnsRecv(struct sockaddr_in *premote_addr, char *pusrdata, unsigned short length) { #endif char buff[DNS_LEN]; char reply[DNS_LEN]; int i; char *rend=&reply[length]; char *p=pusrdata; DnsHeader *hdr=(DnsHeader*)p; DnsHeader *rhdr=(DnsHeader*)&reply[0]; p+=sizeof(DnsHeader); // printf("DNS packet: id 0x%X flags 0x%X rcode 0x%X qcnt %d ancnt %d nscount %d arcount %d len %d\n", // my_ntohs(&hdr->id), hdr->flags, hdr->rcode, my_ntohs(&hdr->qdcount), my_ntohs(&hdr->ancount), my_ntohs(&hdr->nscount), my_ntohs(&hdr->arcount), length); //Some sanity checks: if (length>DNS_LEN) return; //Packet is longer than DNS implementation allows if (length<sizeof(DnsHeader)) return; //Packet is too short if (hdr->ancount || hdr->nscount || hdr->arcount) return; //this is a reply, don't know what to do with it if (hdr->flags&FLAG_TC) return; //truncated, can't use this //Reply is basically the request plus the needed data memcpy(reply, pusrdata, length); rhdr->flags|=FLAG_QR; for (i=0; i<my_ntohs(&hdr->qdcount); i++) { //Grab the labels in the q string p=labelToStr(pusrdata, p, length, buff, sizeof(buff)); if (p==NULL) return; DnsQuestionFooter *qf=(DnsQuestionFooter*)p; p+=sizeof(DnsQuestionFooter); printf("DNS: Q (type 0x%X class 0x%X) for %s\n", my_ntohs(&qf->type), my_ntohs(&qf->class), buff); if (my_ntohs(&qf->type)==QTYPE_A) { //They want to know the IPv4 address of something. //Build the response. rend=strToLabel(buff, rend, sizeof(reply)-(rend-reply)); //Add the label if (rend==NULL) return; DnsResourceFooter *rf=(DnsResourceFooter *)rend; rend+=sizeof(DnsResourceFooter); setn16(&rf->type, QTYPE_A); setn16(&rf->class, QCLASS_IN); setn32(&rf->ttl, 0); setn16(&rf->rdlength, 4); //IPv4 addr is 4 bytes; //Grab the current IP of the softap interface struct ip_info info; wifi_get_ip_info(SOFTAP_IF, &info); *rend++=ip4_addr1(&info.ip); *rend++=ip4_addr2(&info.ip); *rend++=ip4_addr3(&info.ip); *rend++=ip4_addr4(&info.ip); setn16(&rhdr->ancount, my_ntohs(&rhdr->ancount)+1); // printf("Added A rec to resp. Resp len is %d\n", (rend-reply)); } else if (my_ntohs(&qf->type)==QTYPE_NS) {
/*-----------------------------------------------------------------------------------*/ static void low_level_init(struct netif *netif) { struct tapif *tapif; char buf[100]; tapif = netif->state; /* Obtain MAC address from network interface. */ /* (We just fake an address...) */ tapif->ethaddr->addr[0] = 0x1; tapif->ethaddr->addr[1] = 0x2; tapif->ethaddr->addr[2] = 0x3; tapif->ethaddr->addr[3] = 0x4; tapif->ethaddr->addr[4] = 0x5; tapif->ethaddr->addr[5] = 0x6; /* Do whatever else is needed to initialize interface. */ tapif->fd = open(DEVTAP, O_RDWR); DEBUGF(TAPIF_DEBUG, ("tapif_init: fd %d\n", tapif->fd)); if(tapif->fd == -1) { perror("tapif_init"); exit(1); } #ifdef linux { struct ifreq ifr; memset(&ifr, 0, sizeof(ifr)); ifr.ifr_flags = IFF_TAP|IFF_NO_PI; if (ioctl(tapif->fd, TUNSETIFF, (void *) &ifr) < 0) { perror(buf); exit(1); } } #endif /* Linux */ snprintf(buf, sizeof(buf), "ifconfig tap0 inet %d.%d.%d.%d", ip4_addr1(&(netif->gw)), ip4_addr2(&(netif->gw)), ip4_addr3(&(netif->gw)), ip4_addr4(&(netif->gw))); DEBUGF(TAPIF_DEBUG, ("tapif_init: system(\"%s\");\n", buf)); system(buf); // sys_thread_new(tapif_thread, netif); }
static void uip_mcastmac(uip_ipaddr_t *ip, FAR uint8_t *mac) { /* This mapping is from the IETF IN RFC 1700 */ mac[0] = 0x01; mac[1] = 0x00; mac[2] = 0x5e; mac[3] = ip4_addr2(*ip) & 0x7f; mac[4] = ip4_addr3(*ip); mac[5] = ip4_addr4(*ip); nvdbg("IP: %08x -> MAC: %02x%02x%02x%02x%02x%02x\n", *ip, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); }
/** * Change the netmask of a network interface * * @param netif the network interface to change * @param netmask the new netmask * * @note call netif_set_addr() if you also want to change ip address and * default gateway */ void netif_set_netmask(struct netif *netif, struct ip_addr *netmask) { snmp_delete_iprteidx_tree(0, netif); /* set new netmask to netif */ ip_addr_set(&(netif->netmask), netmask); snmp_insert_iprteidx_tree(0, netif); LWIP_DEBUGF(NETIF_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE | 3, ("netif: netmask of interface %c%c set to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", netif->name[0], netif->name[1], ip4_addr1(&netif->netmask), ip4_addr2(&netif->netmask), ip4_addr3(&netif->netmask), ip4_addr4(&netif->netmask))); }
/*-----------------------------------------------------------------------------------*/ static void low_level_init(struct netif *netif) { struct mintapif *mintapif; char buf[1024]; mintapif = netif->state; /* Obtain MAC address from network interface. */ mintapif->ethaddr->addr[0] = 1; mintapif->ethaddr->addr[1] = 2; mintapif->ethaddr->addr[2] = 3; mintapif->ethaddr->addr[3] = 4; mintapif->ethaddr->addr[4] = 5; mintapif->ethaddr->addr[5] = 6; /* Do whatever else is needed to initialize interface. */ mintapif->fd = open(DEVTAP, O_RDWR); if (mintapif->fd == -1) { perror("tapif: tapif_init: open"); exit(1); } #ifdef linux { struct ifreq ifr; memset(&ifr, 0, sizeof(ifr)); ifr.ifr_flags = IFF_TAP|IFF_NO_PI; if (ioctl(mintapif->fd, TUNSETIFF, (void *) &ifr) < 0) { perror(buf); exit(1); } } #endif /* Linux */ snprintf(buf, sizeof(buf), "/sbin/ifconfig " IFCONFIG_ARGS, ip4_addr1(&(netif->gw)), ip4_addr2(&(netif->gw)), ip4_addr3(&(netif->gw)), ip4_addr4(&(netif->gw))); system(buf); mintapif->lasttime = 0; }
static void sys_net_status_changed(u8 status) { #if TLS_CONFIG_TLS_DEBUG struct tls_ethif * ethif; #endif switch(status) { case NETIF_WIFI_JOIN_SUCCESS: TLS_DBGPRT_INFO("join net success\n"); tls_sys_net_up(); break; case NETIF_WIFI_JOIN_FAILED: TLS_DBGPRT_INFO("join net failed\n"); tls_sys_connect_failed(); break; case NETIF_WIFI_DISCONNECTED: TLS_DBGPRT_INFO("net disconnected\n"); #if TLS_CONFIG_APSTA tls_sys_net2_down(); #endif tls_sys_net_down(); break; case NETIF_IP_NET_UP: #if TLS_CONFIG_TLS_DEBUG ethif = tls_netif_get_ethif(); TLS_DBGPRT_INFO("net up ==> ip = %d.%d.%d.%d\n",ip4_addr1(ðif->ip_addr.addr),ip4_addr2(ðif->ip_addr.addr), ip4_addr3(ðif->ip_addr.addr),ip4_addr4(ðif->ip_addr.addr)); #endif break; #if TLS_CONFIG_APSTA case NETIF_APSTA_STA_NET_UP: tls_sys_net2_up(); break; case NETIF_WIFI_APSTA_STA_SUCCESS: TLS_DBGPRT_INFO("apsta 1/2 sta join net success\n"); break; case NETIF_WIFI_APSTA_AP_SUCCESS: TLS_DBGPRT_INFO("apsta 2/2 ap join net success\n"); tls_sys_net_up(); break; #endif default: break; } }
err_t prvxMBTCPPortAccept( void *pvArg, struct tcp_pcb *pxPCB, err_t xErr ) { err_t error; if( xErr != ERR_OK ) { return xErr; } /* We can handle only one client. */ if( pxPCBClient == NULL ) { /* Register the client. */ pxPCBClient = pxPCB; /* Set up the receive function prvxMBTCPPortReceive( ) to be called when data * arrives. */ tcp_recv( pxPCB, prvxMBTCPPortReceive ); /* Register error handler. */ tcp_err( pxPCB, prvvMBTCPPortError ); /* Set callback argument later used in the error handler. */ tcp_arg( pxPCB, pxPCB ); /* Reset the buffers and state variables. */ usTCPBufPos = 0; #ifdef MB_TCP_DEBUG vMBPortLog( MB_LOG_DEBUG, "MBTCP-ACCEPT", "Accepted new client %d.%d.%d.%d\r\n", ip4_addr1( &( pxPCB->remote_ip ) ), ip4_addr2( &( pxPCB->remote_ip ) ), ip4_addr3( &( pxPCB->remote_ip ) ), ip4_addr4( &( pxPCB->remote_ip ) ) ); #endif error = ERR_OK; } else { prvvMBPortReleaseClient( pxPCB ); error = ERR_OK; } return error; }
/** * Initialize one of the NTP servers by IP address, required by DHCP * * @param numdns the index of the NTP server to set must be < SNTP_MAX_SERVERS * @param dnsserver IP address of the NTP server to set */ void dhcp_set_ntp_servers(u8_t num, const ip4_addr_t *server) { LWIP_DEBUGF(SNTP_DEBUG_TRACE, ("sntp: %s %u.%u.%u.%u as NTP server #%u via DHCP\n", (sntp_set_servers_from_dhcp ? "Got" : "Rejected"), ip4_addr1(server), ip4_addr2(server), ip4_addr3(server), ip4_addr4(server), num)); if (sntp_set_servers_from_dhcp && num) { u8_t i; for (i = 0; (i < num) && (i < SNTP_MAX_SERVERS); i++) { ip_addr_t addr; ip_addr_copy_from_ip4(addr, server[i]); sntp_setserver(i, &addr); } for (i = num; i < SNTP_MAX_SERVERS; i++) { sntp_setserver(i, NULL); } } }
void lcd_ip_addr() { /* Declare local ipaddr variable. */ ip_addr* ipaddr; /* Assign ipaddr to the network interface's IP Address. * NOTE: This code assumes that only a single network * interface exists */ ipaddr = &nets[0]->n_ipaddr; /* Display the IP Address (initially) on the LCD Display. */ lcdDevice = fopen( "/dev/lcd", "w" ); fprintf(lcdDevice, "\nIP Address\n%d.%d.%d.%d\n", ip4_addr1(*ipaddr), ip4_addr2(*ipaddr), ip4_addr3(*ipaddr), ip4_addr4(*ipaddr)); fclose( lcdDevice ); }
void tcp_keepalive(struct tcp_pcb *pcb) { struct pbuf *p; struct tcp_hdr *tcphdr; LWIP_DEBUGF(TCP_DEBUG, ("tcp_keepalive: sending KEEPALIVE probe to %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n", ip4_addr1(&pcb->remote_ip), ip4_addr2(&pcb->remote_ip), ip4_addr3(&pcb->remote_ip), ip4_addr4(&pcb->remote_ip))); LWIP_DEBUGF(TCP_DEBUG, ("tcp_keepalive: tcp_ticks %"U32_F" pcb->tmr %"U32_F" pcb->keep_cnt %"U16_F"\n", tcp_ticks, pcb->tmr, pcb->keep_cnt)); p = pbuf_alloc(PBUF_IP, TCP_HLEN, PBUF_RAM); if(p == NULL) { LWIP_DEBUGF(TCP_DEBUG, ("tcp_keepalive: could not allocate memory for pbuf\n")); return; } tcphdr = p->payload; tcphdr->src = htons(pcb->local_port); tcphdr->dest = htons(pcb->remote_port); tcphdr->seqno = htonl(pcb->snd_nxt - 1); tcphdr->ackno = htonl(pcb->rcv_nxt); tcphdr->wnd = htons(pcb->rcv_wnd); tcphdr->urgp = 0; TCPH_HDRLEN_SET(tcphdr, 5); tcphdr->chksum = 0; #if CHECKSUM_GEN_TCP tcphdr->chksum = inet_chksum_pseudo(p, &pcb->local_ip, &pcb->remote_ip, IP_PROTO_TCP, p->tot_len); #endif TCP_STATS_INC(tcp.xmit); /* Send output to IP */ ip_output(p, &pcb->local_ip, &pcb->remote_ip, pcb->ttl, 0, IP_PROTO_TCP); pbuf_free(p); LWIP_DEBUGF(TCP_RST_DEBUG, ("tcp_keepalive: seqno %"U32_F" ackno %"U32_F".\n", pcb->snd_nxt - 1, pcb->rcv_nxt)); }
int tls_cmd_get_sta_detail(u32 *sta_num, u8 *buf) { #define STA_MAC_BUF_LEN 64 int len = 0; u32 cnt; u8 *sta_buf; struct ip_addr *ip_addr; struct tls_sta_info_t *sta; sta_buf = tls_mem_alloc(STA_MAC_BUF_LEN); if (NULL == sta_buf) { return -1; } memset(sta_buf, 0, STA_MAC_BUF_LEN); tls_wifi_get_authed_sta_info(sta_num, sta_buf, STA_MAC_BUF_LEN); sta = (struct tls_sta_info_t *)sta_buf; for (cnt = 0; cnt < *sta_num; cnt++) { ip_addr = tls_dhcps_getip(sta->mac_addr); if (NULL == ip_addr) { len += sprintf((char *)(buf+len), ",%02X-%02X-%02X-%02X-%02X-%02X,-", MAC2STR(sta->mac_addr)); } else { len += sprintf((char *)(buf+len), ",%02X-%02X-%02X-%02X-%02X-%02X,%d.%d.%d.%d", MAC2STR(sta->mac_addr), ip4_addr1(&ip_addr->addr), ip4_addr2(&ip_addr->addr), ip4_addr3(&ip_addr->addr), ip4_addr4(&ip_addr->addr)); } sta++; } tls_mem_free(sta_buf); return 0; }
static u8_t ping_recv(void *arg, struct raw_pcb *pcb, struct pbuf *p, ip_addr_t *addr) { struct ip_hdr *iphdr; struct icmp_echo_hdr *iecho; LWIP_UNUSED_ARG(arg); LWIP_UNUSED_ARG(pcb); LWIP_UNUSED_ARG(addr); LWIP_ASSERT("p != NULL", p != NULL); if ((p->tot_len >= (PBUF_IP_HLEN + sizeof(struct icmp_echo_hdr)))) { iphdr = (struct ip_hdr *)p->payload; iecho = (struct icmp_echo_hdr *)(p->payload + (IPH_HL(iphdr) * 4)); if ((lns.ping_reply != NULL) && (iecho->id == PING_ID) && (iecho->seqno == htons(lns.ping_seq_num))) { lns.ping_recv_tstamp = vmm_timer_timestamp(); lns.ping_reply->ripaddr[0] = ip4_addr1(&lns.ping_addr); lns.ping_reply->ripaddr[1] = ip4_addr2(&lns.ping_addr); lns.ping_reply->ripaddr[2] = ip4_addr3(&lns.ping_addr); lns.ping_reply->ripaddr[3] = ip4_addr4(&lns.ping_addr); lns.ping_reply->ttl = IPH_TTL(iphdr); lns.ping_reply->len = p->tot_len - (IPH_HL(iphdr) * 4); lns.ping_reply->seqno = lns.ping_seq_num; vmm_completion_complete(&lns.ping_done); /* Free the pbuf */ pbuf_free(p); /* Eat the packet. lwIP should not process it. */ return 1; } } /* Don't eat the packet. Let lwIP process it. */ return 0; }
void ICACHE_FLASH_ATTR get_wifi2_status(const int8_t cid, const GetWifi2Status *data) { gw2sr.header = data->header; gw2sr.header.length = sizeof(GetWifi2StatusReturn); struct ip_info info; wifi_get_ip_info(STATION_IF, &info); gw2sr.client_ip[0] = ip4_addr1(&info.ip); gw2sr.client_ip[1] = ip4_addr2(&info.ip); gw2sr.client_ip[2] = ip4_addr3(&info.ip); gw2sr.client_ip[3] = ip4_addr4(&info.ip); gw2sr.client_subnet_mask[0] = ip4_addr1(&info.netmask); gw2sr.client_subnet_mask[1] = ip4_addr2(&info.netmask); gw2sr.client_subnet_mask[2] = ip4_addr3(&info.netmask); gw2sr.client_subnet_mask[3] = ip4_addr4(&info.netmask); gw2sr.client_gateway[0] = ip4_addr1(&info.gw); gw2sr.client_gateway[1] = ip4_addr2(&info.gw); gw2sr.client_gateway[2] = ip4_addr3(&info.gw); gw2sr.client_gateway[3] = ip4_addr4(&info.gw); wifi_get_ip_info(SOFTAP_IF, &info); gw2sr.ap_ip[0] = ip4_addr1(&info.ip); gw2sr.ap_ip[1] = ip4_addr2(&info.ip); gw2sr.ap_ip[2] = ip4_addr3(&info.ip); gw2sr.ap_ip[3] = ip4_addr4(&info.ip); gw2sr.ap_subnet_mask[0] = ip4_addr1(&info.netmask); gw2sr.ap_subnet_mask[1] = ip4_addr2(&info.netmask); gw2sr.ap_subnet_mask[2] = ip4_addr3(&info.netmask); gw2sr.ap_subnet_mask[3] = ip4_addr4(&info.netmask); gw2sr.ap_gateway[0] = ip4_addr1(&info.gw); gw2sr.ap_gateway[1] = ip4_addr2(&info.gw); gw2sr.ap_gateway[2] = ip4_addr3(&info.gw); gw2sr.ap_gateway[3] = ip4_addr4(&info.gw); wifi_get_macaddr(STATION_IF, gw2sr.client_mac_address); wifi_get_macaddr(SOFTAP_IF, gw2sr.ap_mac_address); gw2sr.client_enabled = configuration_current.client_enable; gw2sr.ap_enabled = configuration_current.ap_enable; gw2sr.client_rssi = wifi_station_get_rssi(); gw2sr.client_status = wifi_station_get_connect_status(); gw2sr.ap_connected_count = wifi_softap_get_station_num(); com_send(&gw2sr, sizeof(GetWifi2StatusReturn), cid); }
static int compare_reverse_ptr(struct mdns_state *ms, char *buf) { buf++; if (strtol(buf, &buf, 10) != ip4_addr4(&ms->netif->ip_addr)) return 0; buf++; if (strtol(buf, &buf, 10) != ip4_addr3(&ms->netif->ip_addr)) return 0; buf++; if (strtol(buf, &buf, 10) != ip4_addr2(&ms->netif->ip_addr)) return 0; buf++; if (strtol(buf, &buf, 10) != ip4_addr1(&ms->netif->ip_addr)) return 0; if(strcmp(buf, "\x07in-addr\04arpa") == 0) return 1; return 0; }
/** * Sends an generic or enterprise specific trap message. * * @param generic_trap is the trap code * @param eoid points to enterprise object identifier * @param specific_trap used for enterprise traps when generic_trap == 6 * @return ERR_OK when success, ERR_MEM if we're out of memory * * @note the caller is responsible for filling in outvb in the trap_msg * @note the use of the enterpise identifier field * is per RFC1215. * Use .iso.org.dod.internet.mgmt.mib-2.snmp for generic traps * and .iso.org.dod.internet.private.enterprises.yourenterprise * (sysObjectID) for specific traps. */ err_t snmp_send_trap(s8_t generic_trap, struct snmp_obj_id *eoid, s32_t specific_trap) { struct snmp_trap_dst *td; struct netif *dst_if; ip_addr_t dst_ip; struct pbuf *p; u16_t i,tot_len; for (i=0, td = &trap_dst[0]; i<SNMP_TRAP_DESTINATIONS; i++, td++) { if ((td->enable != 0) && !ip_addr_isany(&td->dip)) { /* network order trap destination */ ip_addr_copy(trap_msg.dip, td->dip); /* lookup current source address for this dst */ dst_if = ip_route(&td->dip); ip_addr_copy(dst_ip, dst_if->ip_addr); /* @todo: what about IPv6? */ trap_msg.sip_raw[0] = ip4_addr1(&dst_ip); trap_msg.sip_raw[1] = ip4_addr2(&dst_ip); trap_msg.sip_raw[2] = ip4_addr3(&dst_ip); trap_msg.sip_raw[3] =
// DNS name resolution callback static void ICACHE_FLASH_ATTR tcpClientHostnameCb(const char *name, ip_addr_t *ipaddr, void *arg) { struct espconn *conn = arg; TcpConn *tci = conn->reverse; os_printf("TCP dns CB (%p %p)\n", arg, tci); if (ipaddr == NULL) { os_printf("TCP %s not found\n", name); } else { os_printf("TCP %s -> %d.%d.%d.%d\n", name, IP2STR(ipaddr)); tci->tcp->remote_ip[0] = ip4_addr1(ipaddr); tci->tcp->remote_ip[1] = ip4_addr2(ipaddr); tci->tcp->remote_ip[2] = ip4_addr3(ipaddr); tci->tcp->remote_ip[3] = ip4_addr4(ipaddr); os_printf("TCP connect %d.%d.%d.%d (%p)\n", IP2STR(tci->tcp->remote_ip), tci); if (espconn_connect(tci->conn) == ESPCONN_OK) { tci->state = TCP_conn; return; } os_printf("TCP connect failure\n"); } // oops tcpConnFree(tci); }
void create_socket_fwup_demo(void) { struct tls_ethif * ethif; ethif = tls_netif_get_ethif(); printf("\nip=%d.%d.%d.%d\n",ip4_addr1(ðif->ip_addr.addr),ip4_addr2(ðif->ip_addr.addr), ip4_addr3(ðif->ip_addr.addr),ip4_addr4(ðif->ip_addr.addr)); /*oneshot config broadcast mac addr*/ DemoRawSockOneshotSendMac(); if(fwup_skt_num<0) { memset(&sock_desc, 0, sizeof(struct tls_socket_desc)); sock_desc.cs_mode = SOCKET_CS_MODE_SERVER; sock_desc.acceptf = socket_fwup_accept; sock_desc.recvf = socket_fwup_recv; sock_desc.errf = socket_fwup_err; sock_desc.pollf = socket_fwup_poll; sock_desc.protocol = SOCKET_PROTO_TCP; sock_desc.port = SOCKET_FWUP_PORT; fwup_skt_num = tls_socket_create(&sock_desc); } }
/** * Resolve and fill-in Ethernet address header for outgoing packet. * * For IP multicast and broadcast, corresponding Ethernet addresses * are selected and the packet is transmitted on the link. * * For unicast addresses, the packet is submitted to etharp_query(). In * case the IP address is outside the local network, the IP address of * the gateway is used. * * @param netif The lwIP network interface which the IP packet will be sent on. * @param ipaddr The IP address of the packet destination. * @param pbuf The pbuf(s) containing the IP packet to be sent. * * @return * - ERR_RTE No route to destination (no gateway to external networks), * or the return type of either etharp_query() or netif->linkoutput(). */ err_t etharp_output(struct netif *netif, struct ip_addr *ipaddr, struct pbuf *q) { struct eth_addr *dest, *srcaddr, mcastaddr; struct eth_hdr *ethhdr; u8_t i; /* make room for Ethernet header - should not fail */ if (pbuf_header(q, sizeof(struct eth_hdr)) != 0) { /* bail out */ LWIP_DEBUGF(ETHARP_DEBUG | DBG_TRACE | 2, ("etharp_output: could not allocate room for header.\n")); LINK_STATS_INC(link.lenerr); return ERR_BUF; } /* assume unresolved Ethernet address */ dest = NULL; /* Determine on destination hardware address. Broadcasts and multicasts * are special, other IP addresses are looked up in the ARP table. */ /* broadcast destination IP address? */ if (ip_addr_isbroadcast(ipaddr, netif)) { /* broadcast on Ethernet also */ dest = (struct eth_addr *)ðbroadcast; /* multicast destination IP address? */ } else if (ip_addr_ismulticast(ipaddr)) { /* Hash IP multicast address to MAC address.*/ mcastaddr.addr[0] = 0x01; mcastaddr.addr[1] = 0x00; mcastaddr.addr[2] = 0x5e; mcastaddr.addr[3] = ip4_addr2(ipaddr) & 0x7f; mcastaddr.addr[4] = ip4_addr3(ipaddr); mcastaddr.addr[5] = ip4_addr4(ipaddr); /* destination Ethernet address is multicast */ dest = &mcastaddr; /* unicast destination IP address? */ } else { /* outside local network? */ if (!ip_addr_netcmp(ipaddr, &(netif->ip_addr), &(netif->netmask))) { /* interface has default gateway? */ if (netif->gw.addr != 0) { /* send to hardware address of default gateway IP address */ ipaddr = &(netif->gw); /* no default gateway available */ } else { /* no route to destination error (default gateway missing) */ return ERR_RTE; } } /* queue on destination Ethernet address belonging to ipaddr */ return etharp_query(netif, ipaddr, q); } /* continuation for multicast/broadcast destinations */ /* obtain source Ethernet address of the given interface */ srcaddr = (struct eth_addr *)netif->hwaddr; ethhdr = q->payload; for (i = 0; i < netif->hwaddr_len; i++) { ethhdr->dest.addr[i] = dest->addr[i]; ethhdr->src.addr[i] = srcaddr->addr[i]; } ethhdr->type = htons(ETHTYPE_IP); /* send packet directly on the link */ return netif->linkoutput(netif, q); }
void ICACHE_FLASH_ATTR packet_counter(espconn *con, uint8_t direction) { uint8 ap_ip[4]; uint8 ap_netmask[4]; uint8 station_ip[4]; uint8 station_netmask[4]; uint8 connection_remote_ip[4]; struct ip_info info_ap; struct ip_info info_station; switch(con->type) { case ESPCONN_TCP: connection_remote_ip[0] = con->proto.tcp->remote_ip[0]; connection_remote_ip[1] = con->proto.tcp->remote_ip[1]; connection_remote_ip[2] = con->proto.tcp->remote_ip[2]; connection_remote_ip[3] = con->proto.tcp->remote_ip[3]; break; case ESPCONN_UDP: connection_remote_ip[0] = con->proto.udp->remote_ip[0]; connection_remote_ip[1] = con->proto.udp->remote_ip[1]; connection_remote_ip[2] = con->proto.udp->remote_ip[2]; connection_remote_ip[3] = con->proto.udp->remote_ip[3]; break; default: return; } if(configuration_current.ap_enable) { wifi_get_ip_info(SOFTAP_IF, &info_ap); ap_ip[0] = ip4_addr1(&info_ap.ip); ap_ip[1] = ip4_addr2(&info_ap.ip); ap_ip[2] = ip4_addr3(&info_ap.ip); ap_ip[3] = ip4_addr4(&info_ap.ip); ap_netmask[0] = ip4_addr1(&info_ap.netmask); ap_netmask[1] = ip4_addr2(&info_ap.netmask); ap_netmask[2] = ip4_addr3(&info_ap.netmask); ap_netmask[3] = ip4_addr4(&info_ap.netmask); // Determine and match network address. if(((connection_remote_ip[0] & ap_netmask[0]) == \ (ap_ip[0] & ap_netmask[0])) && ((connection_remote_ip[1] & ap_netmask[1]) == \ (ap_ip[1] & ap_netmask[1])) && ((connection_remote_ip[2] & ap_netmask[2]) == \ (ap_ip[2] & ap_netmask[2])) && ((connection_remote_ip[3] & ap_netmask[3]) == \ (ap_ip[3] & ap_netmask[3]))) { if(direction == PACKET_COUNT_RX) gw2sr.ap_rx_count++; else if(direction == PACKET_COUNT_TX) gw2sr.ap_tx_count++; } } if(configuration_current.client_enable) { wifi_get_ip_info(STATION_IF, &info_station); station_ip[0] = ip4_addr1(&info_station.ip); station_ip[1] = ip4_addr2(&info_station.ip); station_ip[2] = ip4_addr3(&info_station.ip); station_ip[3] = ip4_addr4(&info_station.ip); station_netmask[0] = ip4_addr1(&info_station.netmask); station_netmask[1] = ip4_addr2(&info_station.netmask); station_netmask[2] = ip4_addr3(&info_station.netmask); station_netmask[3] = ip4_addr4(&info_station.netmask); // Determine and match network address. if(((connection_remote_ip[0] & station_netmask[0]) == \ (station_ip[0] & station_netmask[0])) && ((connection_remote_ip[1] & station_netmask[1]) == \ (station_ip[1] & station_netmask[1])) && ((connection_remote_ip[2] & station_netmask[2]) == \ (station_ip[2] & station_netmask[2])) && ((connection_remote_ip[3] & station_netmask[3]) == \ (station_ip[3] & station_netmask[3]))) { if(direction == PACKET_COUNT_RX) gw2sr.client_rx_count++; else if(direction == PACKET_COUNT_TX) gw2sr.client_tx_count++; } } }
/** * Update (or insert) a IP/MAC address pair in the ARP cache. * * If a pending entry is resolved, any queued packets will be sent * at this point. * * @param ipaddr IP address of the inserted ARP entry. * @param ethaddr Ethernet address of the inserted ARP entry. * @param flags Defines behaviour: * - ETHARP_TRY_HARD Allows ARP to insert this as a new item. If not specified, * only existing ARP entries will be updated. * * @return * - ERR_OK Succesfully updated ARP cache. * - ERR_MEM If we could not add a new ARP entry when ETHARP_TRY_HARD was set. * - ERR_ARG Non-unicast address given, those will not appear in ARP cache. * * @see pbuf_free() */ err_t update_arp_entry(struct netif *netif, struct ip_addr *ipaddr, struct eth_addr *ethaddr, u32_t flags) { s8_t i, k; LWIP_DEBUGF(ETHARP_DEBUG | DBG_TRACE | 3, ("update_arp_entry()\n")); LWIP_ASSERT("netif->hwaddr_len != 0", netif->hwaddr_len != 0); LWIP_DEBUGF(ETHARP_DEBUG | DBG_TRACE, ("update_arp_entry: %lu.%lu.%lu.%lu - %02x:%02x:%02x:%02x:%02x:%02x\n", ip4_addr1(ipaddr), ip4_addr2(ipaddr), ip4_addr3(ipaddr), ip4_addr4(ipaddr), ethaddr->addr[0], ethaddr->addr[1], ethaddr->addr[2], ethaddr->addr[3], ethaddr->addr[4], ethaddr->addr[5])); /* non-unicast address? */ /* XXX XXX XXX broadcast control on netif!*/ if (ip_addr_isany(ipaddr) || /*ip_addr_is_v4broadcast(ipaddr, &(al->ipaddr), &(al->netmask)) ||*/ ip_addr_ismulticast(ipaddr)) { LWIP_DEBUGF(ETHARP_DEBUG | DBG_TRACE, ("update_arp_entry: will not add non-unicast IP address to ARP cache\n")); return ERR_ARG; } /* find or create ARP entry */ i = find_entry(ipaddr, flags); /* bail out if no entry could be found */ if (i < 0) return (err_t)i; /* mark it stable */ arp_table[i].state = (flags & ATF_PERM)?ETHARP_STATE_PERMANENT:ETHARP_STATE_STABLE; LWIP_DEBUGF(ETHARP_DEBUG | DBG_TRACE, ("update_arp_entry: updating %s entry %u\n", (flags & ATF_PERM)?"permanent":"stable",i)); //printf("%lx %lx %lx %lx\n",ipaddr->addr[0],ipaddr->addr[1],ipaddr->addr[2],ipaddr->addr[3]); /* update address */ for (k = 0; k < netif->hwaddr_len; ++k) { arp_table[i].ethaddr.addr[k] = ethaddr->addr[k]; } arp_table[i].if_id=netif->id; /* reset time stamp */ arp_table[i].ctime = 0; /* this is where we will send out queued packets! */ #if ARP_QUEUEING while (arp_table[i].p != NULL) { /* get the first packet on the queue */ struct pbuf *p = arp_table[i].p; /* Ethernet header */ struct eth_hdr *ethhdr = p->payload; /* remember (and reference) remainder of queue */ /* note: this will also terminate the p pbuf chain */ arp_table[i].p = pbuf_dequeue(p); /* fill-in Ethernet header */ for (k = 0; k < netif->hwaddr_len; ++k) { ethhdr->dest.addr[k] = ethaddr->addr[k]; ethhdr->src.addr[k] = netif->hwaddr[k]; } // Fix by Renzo Davoli // ethhdr->type = htons(ETHTYPE_IP); LWIP_DEBUGF(ETHARP_DEBUG | DBG_TRACE, ("update_arp_entry: sending queued IP packet %p.\n", (void *)p)); /* send the queued IP packet */ LINKOUTPUT(netif, p); /* free the queued IP packet */ pbuf_free(p); } #endif return ERR_OK; }
/** * Resolve and fill-in Ethernet address header for outgoing packet. * * For IP multicast and broadcast, corresponding Ethernet addresses * are selected and the packet is transmitted on the link. * * For unicast addresses, the packet is submitted to etharp_query(). In * case the IP address is outside the local network, the IP address of * the gateway is used. * * @param netif The lwIP network interface which the IP packet will be sent on. * @param ipaddr The IP address of the packet destination. * @param pbuf The pbuf(s) containing the IP packet to be sent. * * @return * - ERR_RTE No route to destination (no gateway to external networks), * or the return type of either etharp_query() or netif->linkoutput(). */ err_t etharp_output(struct netif *netif, struct ip_addr *ipaddr, struct pbuf *q) { struct eth_addr *dest, *srcaddr, mcastaddr; struct ip_addr_list *al; struct eth_hdr *ethhdr; u8_t i; /* make room for Ethernet header - should not fail */ if (pbuf_header(q, sizeof(struct eth_hdr)) != 0) { /* bail out */ LWIP_DEBUGF(ETHARP_DEBUG | DBG_TRACE | 2, ("etharp_output: could not allocate room for header.\n")); LINK_STATS_INC(link.lenerr); printf("etharp_output ERR\n"); return ERR_BUF; } /* assume unresolved Ethernet address */ dest = NULL; /* Determine on destination hardware address. Broadcasts and multicasts * are special, other IP addresses are looked up in the ARP table. */ /* broadcast destination IP address? */ if (ip_addr_is_v4comp(ipaddr)) { /* destination IP address is an IP multicast address? */ if (ip_addr_is_v4multicast(ipaddr)) { /* Hash IP multicast address to MAC address. */ mcastaddr.addr[0] = 0x01; mcastaddr.addr[1] = 0x00; mcastaddr.addr[2] = 0x5e; mcastaddr.addr[3] = ip4_addr2(ipaddr) & 0x7f; mcastaddr.addr[4] = ip4_addr3(ipaddr); mcastaddr.addr[5] = ip4_addr4(ipaddr); /* destination Ethernet address is multicast */ dest = &mcastaddr; /* unicast destination IP address? */ } /// CHANGED BY DIEGO BILLI else if (ip_addr_is_v4broadcast_allones(ipaddr)) { dest = (struct eth_addr *)ðbroadcast; } else { /* destination IP network address not on local network? * * IP layer wants us to forward to the default gateway */ if ((al=ip_addr_list_maskfind(netif->addrs, ipaddr)) == NULL) { return -1; } /* destination IP address is an IP broadcast address? */ if (ip_addr_isany(ipaddr) || ip_addr_is_v4broadcast(ipaddr, &(al->ipaddr), &(al->netmask))) { /* broadcast on Ethernet also */ dest = (struct eth_addr *)ðbroadcast; } } } else { if (ip_addr_isany(ipaddr) || ip_addr_ismulticast(ipaddr)) { mcastaddr.addr[0] = 0x33; mcastaddr.addr[1] = 0x33; mcastaddr.addr[2] = 0xff; mcastaddr.addr[3] = ipaddr->addr[3] >> 16 & 0xff; mcastaddr.addr[4] = ipaddr->addr[3] >> 8 & 0xff; mcastaddr.addr[5] = ipaddr->addr[3] & 0xff; dest = &mcastaddr; } /* destination IP network address not on local network? * IP layer wants us to forward to the default gateway */ /* XXX what is this? Is it incomplete code? */ else if ((al=ip_addr_list_maskfind(netif->addrs, ipaddr)) == NULL) {
/** * This function is called by the network interface device driver when * an IP packet is received. The function does the basic checks of the * IP header such as packet size being at least larger than the header * size etc. If the packet was not destined for us, the packet is * forwarded (using ip_forward). The IP checksum is always checked. * * Finally, the packet is sent to the upper layer protocol input function. * * @param p the received IP packet (p->payload points to IP header) * @param inp the netif on which this packet was received * @return ERR_OK if the packet was processed (could return ERR_* if it wasn't * processed, but currently always returns ERR_OK) */ err_t ip_input(struct pbuf *p, struct netif *inp) { struct ip_hdr *iphdr; struct netif *netif; u16_t iphdr_hlen; u16_t iphdr_len; #if LWIP_DHCP int check_ip_src=1; #endif /* LWIP_DHCP */ IP_STATS_INC(ip.recv); snmp_inc_ipinreceives(); /* identify the IP header */ iphdr = p->payload; if (IPH_V(iphdr) != 4) { LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_WARNING, ("IP packet dropped due to bad version number %"U16_F"\n", IPH_V(iphdr))); ip_debug_print(p); pbuf_free(p); IP_STATS_INC(ip.err); IP_STATS_INC(ip.drop); snmp_inc_ipinhdrerrors(); return ERR_OK; } /* obtain IP header length in number of 32-bit words */ iphdr_hlen = IPH_HL(iphdr); /* calculate IP header length in bytes */ iphdr_hlen *= 4; /* obtain ip length in bytes */ iphdr_len = ntohs(IPH_LEN(iphdr)); /* header length exceeds first pbuf length, or ip length exceeds total pbuf length? */ if ((iphdr_hlen > p->len) || (iphdr_len > p->tot_len)) { if (iphdr_hlen > p->len) { LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("IP header (len %"U16_F") does not fit in first pbuf (len %"U16_F"), IP packet dropped.\n", iphdr_hlen, p->len)); } if (iphdr_len > p->tot_len) { LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("IP (len %"U16_F") is longer than pbuf (len %"U16_F"), IP packet dropped.\n", iphdr_len, p->tot_len)); } /* free (drop) packet pbufs */ pbuf_free(p); IP_STATS_INC(ip.lenerr); IP_STATS_INC(ip.drop); snmp_inc_ipindiscards(); return ERR_OK; } /* verify checksum */ #if CHECKSUM_CHECK_IP if (inet_chksum(iphdr, iphdr_hlen) != 0) { LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("Checksum (0x%"X16_F") failed, IP packet dropped.\n", inet_chksum(iphdr, iphdr_hlen))); ip_debug_print(p); pbuf_free(p); IP_STATS_INC(ip.chkerr); IP_STATS_INC(ip.drop); snmp_inc_ipinhdrerrors(); return ERR_OK; } #endif /* Trim pbuf. This should have been done at the netif layer, * but we'll do it anyway just to be sure that its done. */ pbuf_realloc(p, iphdr_len); /* match packet against an interface, i.e. is this packet for us? */ #if LWIP_IGMP if (ip_addr_ismulticast(&(iphdr->dest))) { if ((inp->flags & NETIF_FLAG_IGMP) && (igmp_lookfor_group(inp, &(iphdr->dest)))) { netif = inp; } else { netif = NULL; } } else #endif /* LWIP_IGMP */ { /* start trying with inp. if that's not acceptable, start walking the list of configured netifs. 'first' is used as a boolean to mark whether we started walking the list */ int first = 1; netif = inp; do { LWIP_DEBUGF(IP_DEBUG, ("ip_input: iphdr->dest 0x%"X32_F" netif->ip_addr 0x%"X32_F" (0x%"X32_F", 0x%"X32_F", 0x%"X32_F")\n", iphdr->dest.addr, netif->ip_addr.addr, iphdr->dest.addr & netif->netmask.addr, netif->ip_addr.addr & netif->netmask.addr, iphdr->dest.addr & ~(netif->netmask.addr))); /* interface is up and configured? */ if ((netif_is_up(netif)) && (!ip_addr_isany(&(netif->ip_addr)))) { /* unicast to this interface address? */ if (ip_addr_cmp(&(iphdr->dest), &(netif->ip_addr)) || /* or broadcast on this interface network address? */ ip_addr_isbroadcast(&(iphdr->dest), netif)) { LWIP_DEBUGF(IP_DEBUG, ("ip_input: packet accepted on interface %c%c\n", netif->name[0], netif->name[1])); /* break out of for loop */ break; } } if (first) { first = 0; netif = netif_list; } else { netif = netif->next; } if (netif == inp) { netif = netif->next; } } while(netif != NULL); } #if LWIP_DHCP /* Pass DHCP messages regardless of destination address. DHCP traffic is addressed * using link layer addressing (such as Ethernet MAC) so we must not filter on IP. * According to RFC 1542 section 3.1.1, referred by RFC 2131). */ if (netif == NULL) { /* remote port is DHCP server? */ if (IPH_PROTO(iphdr) == IP_PROTO_UDP) { LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_TRACE, ("ip_input: UDP packet to DHCP client port %"U16_F"\n", ntohs(((struct udp_hdr *)((u8_t *)iphdr + iphdr_hlen))->dest))); if (ntohs(((struct udp_hdr *)((u8_t *)iphdr + iphdr_hlen))->dest) == DHCP_CLIENT_PORT) { LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_TRACE, ("ip_input: DHCP packet accepted.\n")); netif = inp; check_ip_src = 0; } } } #endif /* LWIP_DHCP */ /* broadcast or multicast packet source address? Compliant with RFC 1122: 3.2.1.3 */ #if LWIP_DHCP /* DHCP servers need 0.0.0.0 to be allowed as source address (RFC 1.1.2.2: 3.2.1.3/a) */ if (check_ip_src && (iphdr->src.addr != 0)) #endif /* LWIP_DHCP */ { if ((ip_addr_isbroadcast(&(iphdr->src), inp)) || (ip_addr_ismulticast(&(iphdr->src)))) { /* packet source is not valid */ LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_WARNING, ("ip_input: packet source is not valid.\n")); /* free (drop) packet pbufs */ pbuf_free(p); IP_STATS_INC(ip.drop); snmp_inc_ipinaddrerrors(); snmp_inc_ipindiscards(); return ERR_OK; } } /* packet not for us? */ if (netif == NULL) { /* packet not for us, route or discard */ LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_TRACE, ("ip_input: packet not for us.\n")); #if IP_FORWARD /* non-broadcast packet? */ if (!ip_addr_isbroadcast(&(iphdr->dest), inp)) { /* try to forward IP packet on (other) interfaces */ ip_forward(p, iphdr, inp); } else #endif /* IP_FORWARD */ { snmp_inc_ipinaddrerrors(); snmp_inc_ipindiscards(); } pbuf_free(p); return ERR_OK; } /* packet consists of multiple fragments? */ if ((IPH_OFFSET(iphdr) & htons(IP_OFFMASK | IP_MF)) != 0) { #if IP_REASSEMBLY /* packet fragment reassembly code present? */ LWIP_DEBUGF(IP_DEBUG, ("IP packet is a fragment (id=0x%04"X16_F" tot_len=%"U16_F" len=%"U16_F" MF=%"U16_F" offset=%"U16_F"), calling ip_reass()\n", ntohs(IPH_ID(iphdr)), p->tot_len, ntohs(IPH_LEN(iphdr)), !!(IPH_OFFSET(iphdr) & htons(IP_MF)), (ntohs(IPH_OFFSET(iphdr)) & IP_OFFMASK)*8)); /* reassemble the packet*/ p = ip_reass(p); /* packet not fully reassembled yet? */ if (p == NULL) { return ERR_OK; } iphdr = p->payload; #else /* IP_REASSEMBLY == 0, no packet fragment reassembly code present */ pbuf_free(p); LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("IP packet dropped since it was fragmented (0x%"X16_F") (while IP_REASSEMBLY == 0).\n", ntohs(IPH_OFFSET(iphdr)))); IP_STATS_INC(ip.opterr); IP_STATS_INC(ip.drop); /* unsupported protocol feature */ snmp_inc_ipinunknownprotos(); return ERR_OK; #endif /* IP_REASSEMBLY */ } #if IP_OPTIONS_ALLOWED == 0 /* no support for IP options in the IP header? */ #if LWIP_IGMP /* there is an extra "router alert" option in IGMP messages which we allow for but do not police */ if((iphdr_hlen > IP_HLEN && (IPH_PROTO(iphdr) != IP_PROTO_IGMP)) { #else if (iphdr_hlen > IP_HLEN) { #endif /* LWIP_IGMP */ LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("IP packet dropped since there were IP options (while IP_OPTIONS_ALLOWED == 0).\n")); pbuf_free(p); IP_STATS_INC(ip.opterr); IP_STATS_INC(ip.drop); /* unsupported protocol feature */ snmp_inc_ipinunknownprotos(); return ERR_OK; } #endif /* IP_OPTIONS_ALLOWED == 0 */ /* send to upper layers */ LWIP_DEBUGF(IP_DEBUG, ("ip_input: \n")); ip_debug_print(p); LWIP_DEBUGF(IP_DEBUG, ("ip_input: p->len %"U16_F" p->tot_len %"U16_F"\n", p->len, p->tot_len)); current_netif = inp; current_header = iphdr; #if LWIP_RAW /* raw input did not eat the packet? */ if (raw_input(p, inp) == 0) #endif /* LWIP_RAW */ { switch (IPH_PROTO(iphdr)) { #if LWIP_UDP case IP_PROTO_UDP: #if LWIP_UDPLITE case IP_PROTO_UDPLITE: #endif /* LWIP_UDPLITE */ snmp_inc_ipindelivers(); udp_input(p, inp); break; #endif /* LWIP_UDP */ #if LWIP_TCP case IP_PROTO_TCP: snmp_inc_ipindelivers(); tcp_input(p, inp); break; #endif /* LWIP_TCP */ #if LWIP_ICMP case IP_PROTO_ICMP: snmp_inc_ipindelivers(); icmp_input(p, inp); break; #endif /* LWIP_ICMP */ #if LWIP_IGMP case IP_PROTO_IGMP: igmp_input(p,inp,&(iphdr->dest)); break; #endif /* LWIP_IGMP */ default: #if LWIP_ICMP /* send ICMP destination protocol unreachable unless is was a broadcast */ if (!ip_addr_isbroadcast(&(iphdr->dest), inp) && !ip_addr_ismulticast(&(iphdr->dest))) { p->payload = iphdr; icmp_dest_unreach(p, ICMP_DUR_PROTO); } #endif /* LWIP_ICMP */ pbuf_free(p); LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("Unsupported transport protocol %"U16_F"\n", IPH_PROTO(iphdr))); IP_STATS_INC(ip.proterr); IP_STATS_INC(ip.drop); snmp_inc_ipinunknownprotos(); } } current_netif = NULL; current_header = NULL; return ERR_OK; } /** * Sends an IP packet on a network interface. This function constructs * the IP header and calculates the IP header checksum. If the source * IP address is NULL, the IP address of the outgoing network * interface is filled in as source address. * If the destination IP address is IP_HDRINCL, p is assumed to already * include an IP header and p->payload points to it instead of the data. * * @param p the packet to send (p->payload points to the data, e.g. next protocol header; if dest == IP_HDRINCL, p already includes an IP header and p->payload points to that IP header) * @param src the source IP address to send from (if src == IP_ADDR_ANY, the * IP address of the netif used to send is used as source address) * @param dest the destination IP address to send the packet to * @param ttl the TTL value to be set in the IP header * @param tos the TOS value to be set in the IP header * @param proto the PROTOCOL to be set in the IP header * @param netif the netif on which to send this packet * @return ERR_OK if the packet was sent OK * ERR_BUF if p doesn't have enough space for IP/LINK headers * returns errors returned by netif->output * * @note ip_id: RFC791 "some host may be able to simply use * unique identifiers independent of destination" */ err_t ip_output_if(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest, u8_t ttl, u8_t tos, u8_t proto, struct netif *netif) { #if IP_OPTIONS_SEND return ip_output_if_opt(p, src, dest, ttl, tos, proto, netif, NULL, 0); } /** * Same as ip_output_if() but with the possibility to include IP options: * * @ param ip_options pointer to the IP options, copied into the IP header * @ param optlen length of ip_options */ err_t ip_output_if_opt(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest, u8_t ttl, u8_t tos, u8_t proto, struct netif *netif, void *ip_options, u16_t optlen) { #endif /* IP_OPTIONS_SEND */ struct ip_hdr *iphdr; static u16_t ip_id = 0; snmp_inc_ipoutrequests(); /* Should the IP header be generated or is it already included in p? */ if (dest != IP_HDRINCL) { u16_t ip_hlen = IP_HLEN; #if IP_OPTIONS_SEND u16_t optlen_aligned = 0; if (optlen != 0) { /* round up to a multiple of 4 */ optlen_aligned = ((optlen + 3) & ~3); ip_hlen += optlen_aligned; /* First write in the IP options */ if (pbuf_header(p, optlen_aligned)) { LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("ip_output_if_opt: not enough room for IP options in pbuf\n")); IP_STATS_INC(ip.err); snmp_inc_ipoutdiscards(); return ERR_BUF; } MEMCPY(p->payload, ip_options, optlen); if (optlen < optlen_aligned) { /* zero the remaining bytes */ memset(((char*)p->payload) + optlen, 0, optlen_aligned - optlen); } } #endif /* IP_OPTIONS_SEND */ /* generate IP header */ if (pbuf_header(p, IP_HLEN)) { LWIP_DEBUGF(IP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("ip_output: not enough room for IP header in pbuf\n")); IP_STATS_INC(ip.err); snmp_inc_ipoutdiscards(); return ERR_BUF; } iphdr = p->payload; LWIP_ASSERT("check that first pbuf can hold struct ip_hdr", (p->len >= sizeof(struct ip_hdr))); IPH_TTL_SET(iphdr, ttl); IPH_PROTO_SET(iphdr, proto); ip_addr_set(&(iphdr->dest), dest); IPH_VHLTOS_SET(iphdr, 4, ip_hlen / 4, tos); IPH_LEN_SET(iphdr, htons(p->tot_len)); IPH_OFFSET_SET(iphdr, 0); IPH_ID_SET(iphdr, htons(ip_id)); ++ip_id; if (ip_addr_isany(src)) { ip_addr_set(&(iphdr->src), &(netif->ip_addr)); } else { ip_addr_set(&(iphdr->src), src); } IPH_CHKSUM_SET(iphdr, 0); #if CHECKSUM_GEN_IP IPH_CHKSUM_SET(iphdr, inet_chksum(iphdr, ip_hlen)); #endif } else { /* IP header already included in p */ iphdr = p->payload; dest = &(iphdr->dest); } IP_STATS_INC(ip.xmit); LWIP_DEBUGF(IP_DEBUG, ("ip_output_if: %c%c%"U16_F"\n", netif->name[0], netif->name[1], netif->num)); ip_debug_print(p); #if ENABLE_LOOPBACK if (ip_addr_cmp(dest, &netif->ip_addr)) { /* Packet to self, enqueue it for loopback */ LWIP_DEBUGF(IP_DEBUG, ("netif_loop_output()")); return netif_loop_output(netif, p, dest); } #endif /* ENABLE_LOOPBACK */ #if IP_FRAG /* don't fragment if interface has mtu set to 0 [loopif] */ if (netif->mtu && (p->tot_len > netif->mtu)) { return ip_frag(p,netif,dest); } #endif LWIP_DEBUGF(IP_DEBUG, ("netif->output()")); return netif->output(netif, p, dest); } /** * Simple interface to ip_output_if. It finds the outgoing network * interface and calls upon ip_output_if to do the actual work. * * @param p the packet to send (p->payload points to the data, e.g. next protocol header; if dest == IP_HDRINCL, p already includes an IP header and p->payload points to that IP header) * @param src the source IP address to send from (if src == IP_ADDR_ANY, the * IP address of the netif used to send is used as source address) * @param dest the destination IP address to send the packet to * @param ttl the TTL value to be set in the IP header * @param tos the TOS value to be set in the IP header * @param proto the PROTOCOL to be set in the IP header * * @return ERR_RTE if no route is found * see ip_output_if() for more return values */ err_t ip_output(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest, u8_t ttl, u8_t tos, u8_t proto) { struct netif *netif; if ((netif = ip_route(dest)) == NULL) { LWIP_DEBUGF(IP_DEBUG, ("ip_output: No route to 0x%"X32_F"\n", dest->addr)); IP_STATS_INC(ip.rterr); return ERR_RTE; } return ip_output_if(p, src, dest, ttl, tos, proto, netif); } #if LWIP_NETIF_HWADDRHINT /** Like ip_output, but takes and addr_hint pointer that is passed on to netif->addr_hint * before calling ip_output_if. * * @param p the packet to send (p->payload points to the data, e.g. next protocol header; if dest == IP_HDRINCL, p already includes an IP header and p->payload points to that IP header) * @param src the source IP address to send from (if src == IP_ADDR_ANY, the * IP address of the netif used to send is used as source address) * @param dest the destination IP address to send the packet to * @param ttl the TTL value to be set in the IP header * @param tos the TOS value to be set in the IP header * @param proto the PROTOCOL to be set in the IP header * @param addr_hint address hint pointer set to netif->addr_hint before * calling ip_output_if() * * @return ERR_RTE if no route is found * see ip_output_if() for more return values */ err_t ip_output_hinted(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest, u8_t ttl, u8_t tos, u8_t proto, u8_t *addr_hint) { struct netif *netif; err_t err; if ((netif = ip_route(dest)) == NULL) { LWIP_DEBUGF(IP_DEBUG, ("ip_output: No route to 0x%"X32_F"\n", dest->addr)); IP_STATS_INC(ip.rterr); return ERR_RTE; } netif->addr_hint = addr_hint; err = ip_output_if(p, src, dest, ttl, tos, proto, netif); netif->addr_hint = NULL; return err; } #endif /* LWIP_NETIF_HWADDRHINT*/ #if IP_DEBUG /* Print an IP header by using LWIP_DEBUGF * @param p an IP packet, p->payload pointing to the IP header */ void ip_debug_print(struct pbuf *p) { struct ip_hdr *iphdr = p->payload; u8_t *payload; payload = (u8_t *)iphdr + IP_HLEN; LWIP_DEBUGF(IP_DEBUG, ("IP header:\n")); LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); LWIP_DEBUGF(IP_DEBUG, ("|%2"S16_F" |%2"S16_F" | 0x%02"X16_F" | %5"U16_F" | (v, hl, tos, len)\n", IPH_V(iphdr), IPH_HL(iphdr), IPH_TOS(iphdr), ntohs(IPH_LEN(iphdr)))); LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); LWIP_DEBUGF(IP_DEBUG, ("| %5"U16_F" |%"U16_F"%"U16_F"%"U16_F"| %4"U16_F" | (id, flags, offset)\n", ntohs(IPH_ID(iphdr)), ntohs(IPH_OFFSET(iphdr)) >> 15 & 1, ntohs(IPH_OFFSET(iphdr)) >> 14 & 1, ntohs(IPH_OFFSET(iphdr)) >> 13 & 1, ntohs(IPH_OFFSET(iphdr)) & IP_OFFMASK)); LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); LWIP_DEBUGF(IP_DEBUG, ("| %3"U16_F" | %3"U16_F" | 0x%04"X16_F" | (ttl, proto, chksum)\n", IPH_TTL(iphdr), IPH_PROTO(iphdr), ntohs(IPH_CHKSUM(iphdr)))); LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); LWIP_DEBUGF(IP_DEBUG, ("| %3"U16_F" | %3"U16_F" | %3"U16_F" | %3"U16_F" | (src)\n", ip4_addr1(&iphdr->src), ip4_addr2(&iphdr->src), ip4_addr3(&iphdr->src), ip4_addr4(&iphdr->src))); LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); LWIP_DEBUGF(IP_DEBUG, ("| %3"U16_F" | %3"U16_F" | %3"U16_F" | %3"U16_F" | (dest)\n", ip4_addr1(&iphdr->dest), ip4_addr2(&iphdr->dest), ip4_addr3(&iphdr->dest), ip4_addr4(&iphdr->dest))); LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n")); }
/** * Update (or insert) a IP/MAC address pair in the ARP cache. * * If a pending entry is resolved, any queued packets will be sent * at this point. * * @param ipaddr IP address of the inserted ARP entry. * @param ethaddr Ethernet address of the inserted ARP entry. * @param flags Defines behaviour: * - ETHARP_TRY_HARD Allows ARP to insert this as a new item. If not specified, * only existing ARP entries will be updated. * * @return * - ERR_OK Succesfully updated ARP cache. * - ERR_MEM If we could not add a new ARP entry when ETHARP_TRY_HARD was set. * - ERR_ARG Non-unicast address given, those will not appear in ARP cache. * * @see pbuf_free() */ static err_t update_arp_entry(struct netif *netif, struct ip_addr *ipaddr, struct eth_addr *ethaddr, u8_t flags) { s8_t i; u8_t k; LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE | 3, ("update_arp_entry()\n")); LWIP_ASSERT("netif->hwaddr_len == ETHARP_HWADDR_LEN", netif->hwaddr_len == ETHARP_HWADDR_LEN); LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("update_arp_entry: %"U16_F".%"U16_F".%"U16_F".%"U16_F" - %02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F":%02"X16_F"\n", ip4_addr1(ipaddr), ip4_addr2(ipaddr), ip4_addr3(ipaddr), ip4_addr4(ipaddr), ethaddr->addr[0], ethaddr->addr[1], ethaddr->addr[2], ethaddr->addr[3], ethaddr->addr[4], ethaddr->addr[5])); /* non-unicast address? */ if (ip_addr_isany(ipaddr) || ip_addr_isbroadcast(ipaddr, netif) || ip_addr_ismulticast(ipaddr)) { LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("update_arp_entry: will not add non-unicast IP address to ARP cache\n")); return ERR_ARG; } /* find or create ARP entry */ #if LWIP_NETIF_HWADDRHINT i = find_entry(ipaddr, flags, netif); #else /* LWIP_NETIF_HWADDRHINT */ i = find_entry(ipaddr, flags); #endif /* LWIP_NETIF_HWADDRHINT */ /* bail out if no entry could be found */ if (i < 0) return (err_t)i; /* mark it stable */ arp_table[i].state = ETHARP_STATE_STABLE; /* record network interface */ arp_table[i].netif = netif; /* insert in SNMP ARP index tree */ snmp_insert_arpidx_tree(netif, &arp_table[i].ipaddr); LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("update_arp_entry: updating stable entry %"S16_F"\n", (s16_t)i)); /* update address */ k = ETHARP_HWADDR_LEN; while (k > 0) { k--; arp_table[i].ethaddr.addr[k] = ethaddr->addr[k]; } /* reset time stamp */ arp_table[i].ctime = 0; #if ARP_QUEUEING /* this is where we will send out queued packets! */ while (arp_table[i].q != NULL) { struct pbuf *p; /* remember remainder of queue */ struct etharp_q_entry *q = arp_table[i].q; /* pop first item off the queue */ arp_table[i].q = q->next; /* get the packet pointer */ p = q->p; /* now queue entry can be freed */ memp_free(MEMP_ARP_QUEUE, q); /* send the queued IP packet */ etharp_send_ip(netif, p, (struct eth_addr*)(netif->hwaddr), ethaddr); /* free the queued IP packet */ pbuf_free(p); } #endif return ERR_OK; }
/** * Sends an generic or enterprise specific trap message. * * @param generic_trap is the trap code * @param eoid points to enterprise object identifier * @param specific_trap used for enterprise traps when generic_trap == 6 * @return ERR_OK when success, ERR_MEM if we're out of memory * * @note the caller is responsible for filling in outvb in the trap_msg * @note the use of the enterpise identifier field * is per RFC1215. * Use .iso.org.dod.internet.mgmt.mib-2.snmp for generic traps * and .iso.org.dod.internet.private.enterprises.yourenterprise * (sysObjectID) for specific traps. */ err_t snmp_send_trap(s8_t generic_trap, struct snmp_obj_id *eoid, s32_t specific_trap) { struct snmp_trap_dst *td; struct netif *dst_if; ip_addr_t dst_ip; struct pbuf *p; u16_t i,tot_len; for (i=0, td = &trap_dst[0]; i<SNMP_TRAP_DESTINATIONS; i++, td++) { if ((td->enable != 0) && !ip_addr_isany(&td->dip)) { /* network order trap destination */ ip_addr_copy(trap_msg.dip, td->dip); /* lookup current source address for this dst */ dst_if = ip_route(&td->dip); ip_addr_copy(dst_ip, dst_if->ip_addr); /* @todo: what about IPv6? */ trap_msg.sip_raw[0] = ip4_addr1(&dst_ip); trap_msg.sip_raw[1] = ip4_addr2(&dst_ip); trap_msg.sip_raw[2] = ip4_addr3(&dst_ip); trap_msg.sip_raw[3] = ip4_addr4(&dst_ip); trap_msg.gen_trap = generic_trap; trap_msg.spc_trap = specific_trap; if (generic_trap == SNMP_GENTRAP_ENTERPRISESPC) { /* enterprise-Specific trap */ trap_msg.enterprise = eoid; } else { /* generic (MIB-II) trap */ snmp_get_snmpgrpid_ptr(&trap_msg.enterprise); } snmp_get_sysuptime(&trap_msg.ts); /* pass 0, calculate length fields */ tot_len = snmp_varbind_list_sum(&trap_msg.outvb); tot_len = snmp_trap_header_sum(&trap_msg, tot_len); /* allocate pbuf(s) */ p = pbuf_alloc(PBUF_TRANSPORT, tot_len, PBUF_POOL); if (p != NULL) { u16_t ofs; /* pass 1, encode packet ino the pbuf(s) */ ofs = snmp_trap_header_enc(&trap_msg, p); snmp_varbind_list_enc(&trap_msg.outvb, p, ofs); snmp_inc_snmpouttraps(); snmp_inc_snmpoutpkts(); /** send to the TRAP destination */ udp_sendto(trap_msg.pcb, p, &trap_msg.dip, SNMP_TRAP_PORT); pbuf_free(p); } else { return ERR_MEM; } } } return ERR_OK; }