- applied SF patch #1695652 by Duane Voth
* dumps vnet traffic to a .pcap file for use with wireshark et. al. * sets the default PXE boot filename to pxelinux.0 * fills out the TFTP implementation far enough to use an etherboot rom
This commit is contained in:
Volker Ruppert
parent
feb2f45a3e
commit
1ce5222640
@ -1,5 +1,5 @@
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/////////////////////////////////////////////////////////////////////////
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// $Id: eth_vnet.cc,v 1.18 2005-12-10 18:37:35 vruppert Exp $
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// $Id: eth_vnet.cc,v 1.19 2007-07-01 07:28:14 vruppert Exp $
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/////////////////////////////////////////////////////////////////////////
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//
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// virtual Ethernet locator
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@ -27,6 +27,11 @@
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#define LOG_THIS bx_devices.pluginNE2kDevice->
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#define BX_ETH_VNET_LOGGING 1
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#define BX_ETH_VNET_PCAP_LOGGING 0
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#if BX_ETH_VNET_PCAP_LOGGING
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#include <pcap.h>
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#endif
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/////////////////////////////////////////////////////////////////////////
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// handler to send/receive packets
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@ -78,6 +83,7 @@ typedef void (*layer4_handler_t)(
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#define TFTP_DATA 3
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#define TFTP_ACK 4
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#define TFTP_ERROR 5
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#define TFTP_OPTACK 6
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#define TFTP_BUFFER_SIZE 512
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@ -190,7 +196,11 @@ private:
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Bit8u *buffer,
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unsigned sourceport, unsigned targetport,
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unsigned block_nr);
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void tftp_send_optack(
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Bit8u *buffer,
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unsigned sourceport, unsigned targetport,
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unsigned tsize_option, unsigned blksize_option);
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char tftp_filename[BX_PATHNAME_LEN];
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char tftp_rootdir[BX_PATHNAME_LEN];
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bx_bool tftp_write;
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@ -216,6 +226,11 @@ private:
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#if BX_ETH_VNET_LOGGING
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FILE *pktlog_txt;
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#endif // BX_ETH_VNET_LOGGING
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#if BX_ETH_VNET_PCAP_LOGGING
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pcap_t *pcapp;
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pcap_dumper_t *pktlog_pcap;
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struct pcap_pkthdr pcaphdr;
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#endif // BX_ETH_VNET_PCAP_LOGGING
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};
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class bx_vnet_locator_c : public eth_locator_c {
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@ -281,12 +296,33 @@ static Bit16u ip_checksum(const Bit8u *buf, unsigned buf_len)
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}
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// duplicate the part of tftp_send_data() that constructs the filename
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// but ignore errors since tftp_send_data() will respond for us
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static size_t get_file_size(const char *tpath, const char *tname)
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{
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struct stat stbuf;
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char path[BX_PATHNAME_LEN];
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if (strlen(tname) == 0)
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return 0;
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if ((strlen(tpath) + strlen(tname)) > BX_PATHNAME_LEN)
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return 0;
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sprintf(path, "%s/%s", tpath, tname);
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if (stat(path, &stbuf) < 0)
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return 0;
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BX_INFO(("tftp filesize: %lu", (unsigned long)stbuf.st_size));
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return stbuf.st_size;
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}
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bx_vnet_pktmover_c::bx_vnet_pktmover_c()
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{
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}
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void
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bx_vnet_pktmover_c::pktmover_init(
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void bx_vnet_pktmover_c::pktmover_init(
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const char *netif, const char *macaddr,
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eth_rx_handler_t rxh, void *rxarg, char *script)
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{
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@ -311,7 +347,7 @@ bx_vnet_pktmover_c::pktmover_init(
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this->rx_timer_index =
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bx_pc_system.register_timer(this, this->rx_timer_handler, 1000,
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0, 0, "eth_vnet");
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0, 0, "eth_vnet");
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#if BX_ETH_VNET_LOGGING
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pktlog_txt = fopen ("ne2k-pktlog.txt", "wb");
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@ -328,16 +364,19 @@ bx_vnet_pktmover_c::pktmover_init(
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fprintf (pktlog_txt, "--\n");
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fflush (pktlog_txt);
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#endif
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#if BX_ETH_VNET_PCAP_LOGGING
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pcapp = pcap_open_dead (DLT_EN10MB, BX_PACKET_BUFSIZE);
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pktlog_pcap = pcap_dump_open (pcapp, "ne2k-pktlog.pcap");
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if (pktlog_pcap == NULL) BX_PANIC (("ne2k-pktlog.pcap failed"));
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#endif
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}
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void
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bx_vnet_pktmover_c::sendpkt(void *buf, unsigned io_len)
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void bx_vnet_pktmover_c::sendpkt(void *buf, unsigned io_len)
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{
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guest_to_host((const Bit8u *)buf,io_len);
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}
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void
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bx_vnet_pktmover_c::guest_to_host(const Bit8u *buf, unsigned io_len)
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void bx_vnet_pktmover_c::guest_to_host(const Bit8u *buf, unsigned io_len)
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{
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#if BX_ETH_VNET_LOGGING
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fprintf (pktlog_txt, "a packet from guest to host, length %u\n", io_len);
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@ -351,6 +390,17 @@ bx_vnet_pktmover_c::guest_to_host(const Bit8u *buf, unsigned io_len)
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fprintf (pktlog_txt, "\n--\n");
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fflush (pktlog_txt);
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#endif
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#if BX_ETH_VNET_PCAP_LOGGING
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if (pktlog_pcap && !ferror((FILE *)pktlog_pcap)) {
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Bit64u time = bx_pc_system.time_usec();
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pcaphdr.ts.tv_usec = time % 1000000;
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pcaphdr.ts.tv_sec = time / 1000000;
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pcaphdr.caplen = io_len;
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pcaphdr.len = io_len;
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pcap_dump((u_char *)pktlog_pcap, &pcaphdr, buf);
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fflush((FILE *)pktlog_pcap);
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}
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#endif
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this->tx_time = (64 + 96 + 4 * 8 + io_len * 8) / 10;
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if ((io_len >= 14) &&
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@ -371,16 +421,14 @@ bx_vnet_pktmover_c::guest_to_host(const Bit8u *buf, unsigned io_len)
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}
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// The receive poll process
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void
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bx_vnet_pktmover_c::rx_timer_handler(void *this_ptr)
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void bx_vnet_pktmover_c::rx_timer_handler(void *this_ptr)
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{
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bx_vnet_pktmover_c *class_ptr = (bx_vnet_pktmover_c *) this_ptr;
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class_ptr->rx_timer();
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}
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void
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bx_vnet_pktmover_c::rx_timer(void)
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void bx_vnet_pktmover_c::rx_timer(void)
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{
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this->rxh(this->rxarg, (void *)packet_buffer, packet_len);
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#if BX_ETH_VNET_LOGGING
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@ -395,10 +443,20 @@ bx_vnet_pktmover_c::rx_timer(void)
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fprintf (pktlog_txt, "\n--\n");
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fflush (pktlog_txt);
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#endif
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#if BX_ETH_VNET_PCAP_LOGGING
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if (pktlog_pcap && !ferror((FILE *)pktlog_pcap)) {
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Bit64u time = bx_pc_system.time_usec();
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pcaphdr.ts.tv_usec = time % 1000000;
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pcaphdr.ts.tv_sec = time / 1000000;
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pcaphdr.caplen = packet_len;
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pcaphdr.len = packet_len;
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pcap_dump((u_char *)pktlog_pcap, &pcaphdr, packet_buffer);
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fflush((FILE *)pktlog_pcap);
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}
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#endif
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}
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void
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bx_vnet_pktmover_c::host_to_guest(Bit8u *buf, unsigned io_len)
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void bx_vnet_pktmover_c::host_to_guest(Bit8u *buf, unsigned io_len)
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{
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Bit8u localbuf[60];
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@ -424,8 +482,7 @@ bx_vnet_pktmover_c::host_to_guest(Bit8u *buf, unsigned io_len)
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// ARP
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/////////////////////////////////////////////////////////////////////////
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void
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bx_vnet_pktmover_c::process_arp(const Bit8u *buf, unsigned io_len)
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void bx_vnet_pktmover_c::process_arp(const Bit8u *buf, unsigned io_len)
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{
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unsigned opcode;
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unsigned protocol;
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@ -485,8 +542,7 @@ bx_vnet_pktmover_c::process_arp(const Bit8u *buf, unsigned io_len)
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}
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}
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void
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bx_vnet_pktmover_c::host_to_guest_arp(Bit8u *buf, unsigned io_len)
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void bx_vnet_pktmover_c::host_to_guest_arp(Bit8u *buf, unsigned io_len)
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{
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memcpy(&buf[0],&this->guest_macaddr[0],6);
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memcpy(&buf[6],&this->host_macaddr[0],6);
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@ -499,8 +555,7 @@ bx_vnet_pktmover_c::host_to_guest_arp(Bit8u *buf, unsigned io_len)
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// IPv4
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/////////////////////////////////////////////////////////////////////////
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void
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bx_vnet_pktmover_c::process_ipv4(const Bit8u *buf, unsigned io_len)
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void bx_vnet_pktmover_c::process_ipv4(const Bit8u *buf, unsigned io_len)
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{
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unsigned total_len;
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unsigned packet_id;
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@ -575,8 +630,7 @@ bx_vnet_pktmover_c::process_ipv4(const Bit8u *buf, unsigned io_len)
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}
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}
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void
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bx_vnet_pktmover_c::host_to_guest_ipv4(Bit8u *buf, unsigned io_len)
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void bx_vnet_pktmover_c::host_to_guest_ipv4(Bit8u *buf, unsigned io_len)
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{
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unsigned l3header_len;
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@ -594,8 +648,7 @@ bx_vnet_pktmover_c::host_to_guest_ipv4(Bit8u *buf, unsigned io_len)
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host_to_guest(buf,io_len);
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}
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layer4_handler_t
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bx_vnet_pktmover_c::get_layer4_handler(
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layer4_handler_t bx_vnet_pktmover_c::get_layer4_handler(
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unsigned ipprotocol, unsigned port)
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{
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unsigned n;
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@ -608,8 +661,7 @@ bx_vnet_pktmover_c::get_layer4_handler(
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return (layer4_handler_t)NULL;
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}
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bx_bool
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bx_vnet_pktmover_c::register_layer4_handler(
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bx_bool bx_vnet_pktmover_c::register_layer4_handler(
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unsigned ipprotocol, unsigned port,layer4_handler_t func)
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{
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if (get_layer4_handler(ipprotocol,port) != (layer4_handler_t)NULL) {
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@ -641,8 +693,7 @@ bx_vnet_pktmover_c::register_layer4_handler(
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return true;
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}
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bx_bool
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bx_vnet_pktmover_c::unregister_layer4_handler(
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bx_bool bx_vnet_pktmover_c::unregister_layer4_handler(
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unsigned ipprotocol, unsigned port)
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{
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unsigned n;
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@ -659,8 +710,7 @@ bx_vnet_pktmover_c::unregister_layer4_handler(
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return false;
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}
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void
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bx_vnet_pktmover_c::process_icmpipv4(
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void bx_vnet_pktmover_c::process_icmpipv4(
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const Bit8u *ipheader, unsigned ipheader_len,
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const Bit8u *l4pkt, unsigned l4pkt_len)
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{
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@ -688,8 +738,7 @@ bx_vnet_pktmover_c::process_icmpipv4(
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}
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}
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void
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bx_vnet_pktmover_c::process_tcpipv4(
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void bx_vnet_pktmover_c::process_tcpipv4(
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const Bit8u *ipheader, unsigned ipheader_len,
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const Bit8u *l4pkt, unsigned l4pkt_len)
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{
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@ -698,8 +747,7 @@ bx_vnet_pktmover_c::process_tcpipv4(
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BX_INFO(("tcp packet - not implemented"));
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}
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void
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bx_vnet_pktmover_c::process_udpipv4(
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void bx_vnet_pktmover_c::process_udpipv4(
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const Bit8u *ipheader, unsigned ipheader_len,
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const Bit8u *l4pkt, unsigned l4pkt_len)
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{
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@ -722,8 +770,7 @@ bx_vnet_pktmover_c::process_udpipv4(
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}
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}
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void
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bx_vnet_pktmover_c::host_to_guest_udpipv4_packet(
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void bx_vnet_pktmover_c::host_to_guest_udpipv4_packet(
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unsigned target_port, unsigned source_port,
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const Bit8u *udpdata, unsigned udpdata_len)
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{
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@ -765,8 +812,7 @@ bx_vnet_pktmover_c::host_to_guest_udpipv4_packet(
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// ICMP/IPv4
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/////////////////////////////////////////////////////////////////////////
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void
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bx_vnet_pktmover_c::process_icmpipv4_echo(
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void bx_vnet_pktmover_c::process_icmpipv4_echo(
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const Bit8u *ipheader, unsigned ipheader_len,
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const Bit8u *l4pkt, unsigned l4pkt_len)
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{
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@ -792,8 +838,7 @@ bx_vnet_pktmover_c::process_icmpipv4_echo(
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// DHCP/UDP/IPv4
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/////////////////////////////////////////////////////////////////////////
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void
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bx_vnet_pktmover_c::udpipv4_dhcp_handler(
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void bx_vnet_pktmover_c::udpipv4_dhcp_handler(
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void *this_ptr,
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const Bit8u *ipheader, unsigned ipheader_len,
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unsigned sourceport, unsigned targetport,
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@ -803,8 +848,7 @@ bx_vnet_pktmover_c::udpipv4_dhcp_handler(
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ipheader,ipheader_len,sourceport,targetport,data,data_len);
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}
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void
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bx_vnet_pktmover_c::udpipv4_dhcp_handler_ns(
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void bx_vnet_pktmover_c::udpipv4_dhcp_handler_ns(
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const Bit8u *ipheader, unsigned ipheader_len,
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unsigned sourceport, unsigned targetport,
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const Bit8u *data, unsigned data_len)
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@ -912,10 +956,8 @@ bx_vnet_pktmover_c::udpipv4_dhcp_handler_ns(
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memcpy(&replybuf[16],default_guest_ipv4addr,4);
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memcpy(&replybuf[20],host_ipv4addr,4);
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memcpy(&replybuf[28],&data[28],6);
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replybuf[44] = 'v';
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replybuf[45] = 'n';
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replybuf[46] = 'e';
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replybuf[47] = 't';
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memcpy(&replybuf[44],"vnet",4);
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memcpy(&replybuf[108],"pxelinux.0",10);
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replybuf[236] = 0x63;
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replybuf[237] = 0x82;
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replybuf[238] = 0x53;
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@ -1104,8 +1146,7 @@ bx_vnet_pktmover_c::udpipv4_dhcp_handler_ns(
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replybuf, opts_len);
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}
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void
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bx_vnet_pktmover_c::udpipv4_tftp_handler(
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void bx_vnet_pktmover_c::udpipv4_tftp_handler(
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void *this_ptr,
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const Bit8u *ipheader, unsigned ipheader_len,
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unsigned sourceport, unsigned targetport,
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@ -1115,8 +1156,7 @@ bx_vnet_pktmover_c::udpipv4_tftp_handler(
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ipheader,ipheader_len,sourceport,targetport,data,data_len);
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}
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void
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bx_vnet_pktmover_c::udpipv4_tftp_handler_ns(
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void bx_vnet_pktmover_c::udpipv4_tftp_handler_ns(
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const Bit8u *ipheader, unsigned ipheader_len,
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unsigned sourceport, unsigned targetport,
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const Bit8u *data, unsigned data_len)
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@ -1133,16 +1173,48 @@ bx_vnet_pktmover_c::udpipv4_tftp_handler_ns(
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strncpy((char*)buffer, (const char*)data + 2, data_len - 2);
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buffer[data_len - 4] = 0;
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// transfer mode
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// options
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size_t tsize_option = 0;
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int blksize_option = 0;
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if (strlen((char*)buffer) < data_len - 2) {
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const char *mode = (const char*)data + 2 + strlen((char*)buffer) + 1;
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if (memcmp(mode, "octet\0", 6) != 0) {
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int octet_option = 0;
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while (mode < (const char*)data + data_len) {
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if (memcmp(mode, "octet\0", 6) == 0) {
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mode += 6;
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octet_option = 1;
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} else if (memcmp(mode, "tsize\0", 6) == 0) {
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mode += 6;
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tsize_option = 1; // size needed
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mode += strlen(mode)+1;
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} else if (memcmp(mode, "blksize\0", 8) == 0) {
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mode += 8;
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blksize_option = atoi(mode);
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mode += strlen(mode)+1;
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} else {
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BX_INFO(("tftp req: unknown option %s", mode));
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break;
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}
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}
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if (!octet_option) {
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tftp_send_error(buffer, sourceport, targetport, 4, "Unsupported transfer mode");
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return;
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}
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}
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strcpy(tftp_filename, (char*)buffer);
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BX_INFO(("tftp req: %s", tftp_filename));
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if (tsize_option) {
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tsize_option = get_file_size(tftp_rootdir, tftp_filename);
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if (tsize_option > 0) {
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// if tsize requested and file exists, send optack and return
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// optack ack will pick up where we leave off here.
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// if blksize_option is less than TFTP_BUFFER_SIZE should
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// probably use blksize_option...
|
||||
tftp_send_optack(buffer, sourceport, targetport, tsize_option, TFTP_BUFFER_SIZE);
|
||||
return;
|
||||
}
|
||||
}
|
||||
tftp_tid = sourceport;
|
||||
tftp_write = 0;
|
||||
tftp_send_data(buffer, sourceport, targetport, 1);
|
||||
@ -1170,12 +1242,12 @@ bx_vnet_pktmover_c::udpipv4_tftp_handler_ns(
|
||||
if (fp) {
|
||||
tftp_send_error(buffer, sourceport, targetport, 6, "File exists");
|
||||
fclose(fp);
|
||||
return;
|
||||
return;
|
||||
}
|
||||
fp = fopen(path, "wb");
|
||||
if (!fp) {
|
||||
tftp_send_error(buffer, sourceport, targetport, 2, "Access violation");
|
||||
return;
|
||||
return;
|
||||
}
|
||||
fclose(fp);
|
||||
tftp_tid = sourceport;
|
||||
@ -1197,11 +1269,11 @@ bx_vnet_pktmover_c::udpipv4_tftp_handler_ns(
|
||||
fp = fopen(path, "ab");
|
||||
if (!fp) {
|
||||
tftp_send_error(buffer, sourceport, targetport, 2, "Access violation");
|
||||
return;
|
||||
return;
|
||||
}
|
||||
if (fseek(fp, (block_nr - 1) * TFTP_BUFFER_SIZE, SEEK_SET) < 0) {
|
||||
tftp_send_error(buffer, sourceport, targetport, 3, "Block not seekable");
|
||||
return;
|
||||
return;
|
||||
}
|
||||
fwrite(buffer, 1, tftp_len, fp);
|
||||
fclose(fp);
|
||||
@ -1227,8 +1299,7 @@ bx_vnet_pktmover_c::udpipv4_tftp_handler_ns(
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
bx_vnet_pktmover_c::tftp_send_error(
|
||||
void bx_vnet_pktmover_c::tftp_send_error(
|
||||
Bit8u *buffer,
|
||||
unsigned sourceport, unsigned targetport,
|
||||
unsigned code, const char *msg)
|
||||
@ -1240,8 +1311,7 @@ bx_vnet_pktmover_c::tftp_send_error(
|
||||
tftp_tid = 0;
|
||||
}
|
||||
|
||||
void
|
||||
bx_vnet_pktmover_c::tftp_send_data(
|
||||
void bx_vnet_pktmover_c::tftp_send_data(
|
||||
Bit8u *buffer,
|
||||
unsigned sourceport, unsigned targetport,
|
||||
unsigned block_nr)
|
||||
@ -1265,12 +1335,12 @@ bx_vnet_pktmover_c::tftp_send_data(
|
||||
if (!fp) {
|
||||
sprintf(msg, "File not found: %s", tftp_filename);
|
||||
tftp_send_error(buffer, sourceport, targetport, 1, msg);
|
||||
return;
|
||||
return;
|
||||
}
|
||||
|
||||
if (fseek(fp, (block_nr - 1) * TFTP_BUFFER_SIZE, SEEK_SET) < 0) {
|
||||
tftp_send_error(buffer, sourceport, targetport, 3, "Block not seekable");
|
||||
return;
|
||||
return;
|
||||
}
|
||||
|
||||
rd = fread(buffer + 4, 1, TFTP_BUFFER_SIZE, fp);
|
||||
@ -1278,7 +1348,7 @@ bx_vnet_pktmover_c::tftp_send_data(
|
||||
|
||||
if (rd < 0) {
|
||||
tftp_send_error(buffer, sourceport, targetport, 3, "Block not readable");
|
||||
return;
|
||||
return;
|
||||
}
|
||||
|
||||
put_net2(buffer, TFTP_DATA);
|
||||
@ -1289,8 +1359,7 @@ bx_vnet_pktmover_c::tftp_send_data(
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
bx_vnet_pktmover_c::tftp_send_ack(
|
||||
void bx_vnet_pktmover_c::tftp_send_ack(
|
||||
Bit8u *buffer,
|
||||
unsigned sourceport, unsigned targetport,
|
||||
unsigned block_nr)
|
||||
@ -1300,5 +1369,24 @@ bx_vnet_pktmover_c::tftp_send_ack(
|
||||
host_to_guest_udpipv4_packet(sourceport, targetport, buffer, 4);
|
||||
}
|
||||
|
||||
void bx_vnet_pktmover_c::tftp_send_optack(
|
||||
Bit8u *buffer,
|
||||
unsigned sourceport, unsigned targetport,
|
||||
size_t tsize_option, unsigned blksize_option)
|
||||
{
|
||||
Bit8u *p = buffer;
|
||||
put_net2(p, TFTP_OPTACK);
|
||||
p += 2;
|
||||
if (tsize_option > 0) {
|
||||
*p++='t'; *p++='s'; *p++='i'; *p++='z'; *p++='e'; *p++='\0';
|
||||
sprintf((char *)p, "%lu", (unsigned long)tsize_option);
|
||||
p += strlen((const char *)p) + 1;
|
||||
}
|
||||
if (blksize_option > 0) {
|
||||
*p++='b'; *p++='l'; *p++='k'; *p++='s'; *p++='i'; *p++='z'; *p++='e'; *p++='\0';
|
||||
sprintf((char *)p, "%d", blksize_option); p += strlen((const char *)p) + 1;
|
||||
}
|
||||
host_to_guest_udpipv4_packet(sourceport, targetport, buffer, p - buffer);
|
||||
}
|
||||
|
||||
#endif /* if BX_NETWORKING */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user