X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=net%2Fbootp.c;h=efa959971c279fe4e74d04ec0007d0cb1ef52e34;hb=fdb6c3232f66bc9c07c30de87928506477ac4e63;hp=fdb97cb56252521237baf7b2f02c94f42724cd8d;hpb=8e8d73b4a5ae051ca2de091151677f2d8340c1f6;p=u-boot diff --git a/net/bootp.c b/net/bootp.c index fdb97cb562..efa959971c 100644 --- a/net/bootp.c +++ b/net/bootp.c @@ -10,11 +10,11 @@ #include #include +#include #include +#include #include "bootp.h" -#include "tftp.h" -#include "nfs.h" -#ifdef CONFIG_STATUS_LED +#ifdef CONFIG_LED_STATUS #include #endif #ifdef CONFIG_BOOTP_RANDOM_DELAY @@ -23,12 +23,22 @@ #define BOOTP_VENDOR_MAGIC 0x63825363 /* RFC1048 Magic Cookie */ -#define TIMEOUT 5000UL /* Milliseconds before trying BOOTP again */ +/* + * The timeout for the initial BOOTP/DHCP request used to be described by a + * counter of fixed-length timeout periods. TIMEOUT_COUNT represents + * that counter + * + * Now that the timeout periods are variable (exponential backoff and retry) + * we convert the timeout count to the absolute time it would have take to + * execute that many retries, and keep sending retry packets until that time + * is reached. + */ #ifndef CONFIG_NET_RETRY_COUNT # define TIMEOUT_COUNT 5 /* # of timeouts before giving up */ #else # define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT) #endif +#define TIMEOUT_MS ((3 + (TIMEOUT_COUNT * 5)) * 1000) #define PORT_BOOTPS 67 /* BOOTP server UDP port */ #define PORT_BOOTPC 68 /* BOOTP client UDP port */ @@ -37,15 +47,30 @@ #define CONFIG_DHCP_MIN_EXT_LEN 64 #endif -ulong BootpID; -int BootpTry; +#ifndef CONFIG_BOOTP_ID_CACHE_SIZE +#define CONFIG_BOOTP_ID_CACHE_SIZE 4 +#endif + +u32 bootp_ids[CONFIG_BOOTP_ID_CACHE_SIZE]; +unsigned int bootp_num_ids; +int bootp_try; +ulong bootp_start; +ulong bootp_timeout; +char net_nis_domain[32] = {0,}; /* Our NIS domain */ +char net_hostname[32] = {0,}; /* Our hostname */ +char net_root_path[64] = {0,}; /* Our bootpath */ + +static ulong time_taken_max; #if defined(CONFIG_CMD_DHCP) static dhcp_state_t dhcp_state = INIT; -static unsigned long dhcp_leasetime; -static IPaddr_t NetDHCPServerIP; -static void DhcpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, - unsigned len); +static u32 dhcp_leasetime; +static struct in_addr dhcp_server_ip; +static u8 dhcp_option_overload; +#define OVERLOAD_FILE 1 +#define OVERLOAD_SNAME 2 +static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip, + unsigned src, unsigned len); /* For Debug */ #if 0 @@ -65,27 +90,50 @@ static char *dhcpmsg2str(int type) #endif #endif -static int BootpCheckPkt(uchar *pkt, unsigned dest, unsigned src, unsigned len) +static void bootp_add_id(ulong id) { - struct Bootp_t *bp = (struct Bootp_t *) pkt; + if (bootp_num_ids >= ARRAY_SIZE(bootp_ids)) { + size_t size = sizeof(bootp_ids) - sizeof(id); + + memmove(bootp_ids, &bootp_ids[1], size); + bootp_ids[bootp_num_ids - 1] = id; + } else { + bootp_ids[bootp_num_ids] = id; + bootp_num_ids++; + } +} + +static bool bootp_match_id(ulong id) +{ + unsigned int i; + + for (i = 0; i < bootp_num_ids; i++) + if (bootp_ids[i] == id) + return true; + + return false; +} + +static int check_reply_packet(uchar *pkt, unsigned dest, unsigned src, + unsigned len) +{ + struct bootp_hdr *bp = (struct bootp_hdr *)pkt; int retval = 0; if (dest != PORT_BOOTPC || src != PORT_BOOTPS) retval = -1; - else if (len < sizeof(struct Bootp_t) - OPT_FIELD_SIZE) + else if (len < sizeof(struct bootp_hdr) - OPT_FIELD_SIZE) retval = -2; - else if (bp->bp_op != OP_BOOTREQUEST && - bp->bp_op != OP_BOOTREPLY && - bp->bp_op != DHCP_OFFER && - bp->bp_op != DHCP_ACK && - bp->bp_op != DHCP_NAK) + else if (bp->bp_op != OP_BOOTREPLY) retval = -3; else if (bp->bp_htype != HWT_ETHER) retval = -4; else if (bp->bp_hlen != HWL_ETHER) retval = -5; - else if (NetReadLong((ulong *)&bp->bp_id) != BootpID) + else if (!bootp_match_id(net_read_u32(&bp->bp_id))) retval = -6; + else if (memcmp(bp->bp_chaddr, net_ethaddr, HWL_ETHER) != 0) + retval = -7; debug("Filtering pkt = %d\n", retval); @@ -95,28 +143,35 @@ static int BootpCheckPkt(uchar *pkt, unsigned dest, unsigned src, unsigned len) /* * Copy parameters of interest from BOOTP_REPLY/DHCP_OFFER packet */ -static void BootpCopyNetParams(struct Bootp_t *bp) +static void store_net_params(struct bootp_hdr *bp) { #if !defined(CONFIG_BOOTP_SERVERIP) - IPaddr_t tmp_ip; - - NetCopyIP(&tmp_ip, &bp->bp_siaddr); - if (tmp_ip != 0) - NetCopyIP(&NetServerIP, &bp->bp_siaddr); - memcpy(NetServerEther, ((struct ethernet_hdr *)NetRxPacket)->et_src, 6); + struct in_addr tmp_ip; + + net_copy_ip(&tmp_ip, &bp->bp_siaddr); + if (tmp_ip.s_addr != 0) + net_copy_ip(&net_server_ip, &bp->bp_siaddr); + memcpy(net_server_ethaddr, + ((struct ethernet_hdr *)net_rx_packet)->et_src, 6); + if ( +#if defined(CONFIG_CMD_DHCP) + !(dhcp_option_overload & OVERLOAD_FILE) && #endif - NetCopyIP(&NetOurIP, &bp->bp_yiaddr); - if (strlen(bp->bp_file) > 0) - copy_filename(BootFile, bp->bp_file, sizeof(BootFile)); + (strlen(bp->bp_file) > 0)) { + copy_filename(net_boot_file_name, bp->bp_file, + sizeof(net_boot_file_name)); + } - debug("Bootfile: %s\n", BootFile); + debug("net_boot_file_name: %s\n", net_boot_file_name); /* Propagate to environment: * don't delete exising entry when BOOTP / DHCP reply does * not contain a new value */ - if (*BootFile) - setenv("bootfile", BootFile); + if (*net_boot_file_name) + env_set("bootfile", net_boot_file_name); +#endif + net_copy_ip(&net_ip, &bp->bp_yiaddr); } static int truncate_sz(const char *name, int maxlen, int curlen) @@ -131,38 +186,40 @@ static int truncate_sz(const char *name, int maxlen, int curlen) #if !defined(CONFIG_CMD_DHCP) -static void BootpVendorFieldProcess(u8 *ext) +static void bootp_process_vendor_field(u8 *ext) { int size = *(ext + 1); debug("[BOOTP] Processing extension %d... (%d bytes)\n", *ext, - *(ext + 1)); + *(ext + 1)); - NetBootFileSize = 0; + net_boot_file_expected_size_in_blocks = 0; switch (*ext) { /* Fixed length fields */ case 1: /* Subnet mask */ - if (NetOurSubnetMask == 0) - NetCopyIP(&NetOurSubnetMask, (IPaddr_t *) (ext + 2)); + if (net_netmask.s_addr == 0) + net_copy_ip(&net_netmask, (struct in_addr *)(ext + 2)); break; case 2: /* Time offset - Not yet supported */ break; /* Variable length fields */ case 3: /* Gateways list */ - if (NetOurGatewayIP == 0) - NetCopyIP(&NetOurGatewayIP, (IPaddr_t *) (ext + 2)); + if (net_gateway.s_addr == 0) + net_copy_ip(&net_gateway, (struct in_addr *)(ext + 2)); break; case 4: /* Time server - Not yet supported */ break; case 5: /* IEN-116 name server - Not yet supported */ break; case 6: - if (NetOurDNSIP == 0) - NetCopyIP(&NetOurDNSIP, (IPaddr_t *) (ext + 2)); + if (net_dns_server.s_addr == 0) + net_copy_ip(&net_dns_server, + (struct in_addr *)(ext + 2)); #if defined(CONFIG_BOOTP_DNS2) - if ((NetOurDNS2IP == 0) && (size > 4)) - NetCopyIP(&NetOurDNS2IP, (IPaddr_t *) (ext + 2 + 4)); + if ((net_dns_server2.s_addr == 0) && (size > 4)) + net_copy_ip(&net_dns_server2, + (struct in_addr *)(ext + 2 + 4)); #endif break; case 7: /* Log server - Not yet supported */ @@ -176,18 +233,20 @@ static void BootpVendorFieldProcess(u8 *ext) case 11: /* RPL server - Not yet supported */ break; case 12: /* Host name */ - if (NetOurHostName[0] == 0) { + if (net_hostname[0] == 0) { size = truncate_sz("Host Name", - sizeof(NetOurHostName), size); - memcpy(&NetOurHostName, ext + 2, size); - NetOurHostName[size] = 0; + sizeof(net_hostname), size); + memcpy(&net_hostname, ext + 2, size); + net_hostname[size] = 0; } break; case 13: /* Boot file size */ if (size == 2) - NetBootFileSize = ntohs(*(ushort *) (ext + 2)); + net_boot_file_expected_size_in_blocks = + ntohs(*(ushort *)(ext + 2)); else if (size == 4) - NetBootFileSize = ntohl(*(ulong *) (ext + 2)); + net_boot_file_expected_size_in_blocks = + ntohl(*(ulong *)(ext + 2)); break; case 14: /* Merit dump file - Not yet supported */ break; @@ -196,11 +255,11 @@ static void BootpVendorFieldProcess(u8 *ext) case 16: /* Swap server - Not yet supported */ break; case 17: /* Root path */ - if (NetOurRootPath[0] == 0) { + if (net_root_path[0] == 0) { size = truncate_sz("Root Path", - sizeof(NetOurRootPath), size); - memcpy(&NetOurRootPath, ext + 2, size); - NetOurRootPath[size] = 0; + sizeof(net_root_path), size); + memcpy(&net_root_path, ext + 2, size); + net_root_path[size] = 0; } break; case 18: /* Extension path - Not yet supported */ @@ -212,16 +271,16 @@ static void BootpVendorFieldProcess(u8 *ext) break; /* IP host layer fields */ case 40: /* NIS Domain name */ - if (NetOurNISDomain[0] == 0) { + if (net_nis_domain[0] == 0) { size = truncate_sz("NIS Domain Name", - sizeof(NetOurNISDomain), size); - memcpy(&NetOurNISDomain, ext + 2, size); - NetOurNISDomain[size] = 0; + sizeof(net_nis_domain), size); + memcpy(&net_nis_domain, ext + 2, size); + net_nis_domain[size] = 0; } break; #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) case 42: /* NTP server IP */ - NetCopyIP(&NetNtpServerIP, (IPaddr_t *) (ext + 2)); + net_copy_ip(&net_ntp_server, (struct in_addr *)(ext + 2)); break; #endif /* Application layer fields */ @@ -235,7 +294,7 @@ static void BootpVendorFieldProcess(u8 *ext) } } -static void BootpVendorProcess(u8 *ext, int size) +static void bootp_process_vendor(u8 *ext, int size) { u8 *end = ext + size; @@ -249,70 +308,67 @@ static void BootpVendorProcess(u8 *ext, int size) ext += ext[1] + 2; if (ext <= end) - BootpVendorFieldProcess(opt); + bootp_process_vendor_field(opt); } } debug("[BOOTP] Received fields:\n"); - if (NetOurSubnetMask) - debug("NetOurSubnetMask : %pI4\n", &NetOurSubnetMask); - - if (NetOurGatewayIP) - debug("NetOurGatewayIP : %pI4", &NetOurGatewayIP); + if (net_netmask.s_addr) + debug("net_netmask : %pI4\n", &net_netmask); - if (NetBootFileSize) - debug("NetBootFileSize : %d\n", NetBootFileSize); + if (net_gateway.s_addr) + debug("net_gateway : %pI4", &net_gateway); - if (NetOurHostName[0]) - debug("NetOurHostName : %s\n", NetOurHostName); + if (net_boot_file_expected_size_in_blocks) + debug("net_boot_file_expected_size_in_blocks : %d\n", + net_boot_file_expected_size_in_blocks); - if (NetOurRootPath[0]) - debug("NetOurRootPath : %s\n", NetOurRootPath); + if (net_hostname[0]) + debug("net_hostname : %s\n", net_hostname); - if (NetOurNISDomain[0]) - debug("NetOurNISDomain : %s\n", NetOurNISDomain); + if (net_root_path[0]) + debug("net_root_path : %s\n", net_root_path); - if (NetBootFileSize) - debug("NetBootFileSize: %d\n", NetBootFileSize); + if (net_nis_domain[0]) + debug("net_nis_domain : %s\n", net_nis_domain); #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) - if (NetNtpServerIP) - debug("NetNtpServerIP : %pI4\n", &NetNtpServerIP); + if (net_ntp_server) + debug("net_ntp_server : %pI4\n", &net_ntp_server); #endif } /* * Handle a BOOTP received packet. */ -static void -BootpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, - unsigned len) +static void bootp_handler(uchar *pkt, unsigned dest, struct in_addr sip, + unsigned src, unsigned len) { - struct Bootp_t *bp; + struct bootp_hdr *bp; debug("got BOOTP packet (src=%d, dst=%d, len=%d want_len=%zu)\n", - src, dest, len, sizeof(struct Bootp_t)); + src, dest, len, sizeof(struct bootp_hdr)); - bp = (struct Bootp_t *)pkt; + bp = (struct bootp_hdr *)pkt; /* Filter out pkts we don't want */ - if (BootpCheckPkt(pkt, dest, src, len)) + if (check_reply_packet(pkt, dest, src, len)) return; /* * Got a good BOOTP reply. Copy the data into our variables. */ -#ifdef CONFIG_STATUS_LED - status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF); +#if defined(CONFIG_LED_STATUS) && defined(CONFIG_LED_STATUS_BOOT_ENABLE) + status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_OFF); #endif - BootpCopyNetParams(bp); /* Store net parameters from reply */ + store_net_params(bp); /* Store net parameters from reply */ /* Retrieve extended information (we must parse the vendor area) */ - if (NetReadLong((ulong *)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC)) - BootpVendorProcess((uchar *)&bp->bp_vend[4], len); + if (net_read_u32((u32 *)&bp->bp_vend[0]) == htonl(BOOTP_VENDOR_MAGIC)) + bootp_process_vendor((uchar *)&bp->bp_vend[4], len); - NetSetTimeout(0, (thand_f *)0); + net_set_timeout_handler(0, (thand_f *)0); bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, "bootp_stop"); debug("Got good BOOTP\n"); @@ -324,20 +380,31 @@ BootpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, /* * Timeout on BOOTP/DHCP request. */ -static void -BootpTimeout(void) +static void bootp_timeout_handler(void) { - if (BootpTry >= TIMEOUT_COUNT) { + ulong time_taken = get_timer(bootp_start); + + if (time_taken >= time_taken_max) { #ifdef CONFIG_BOOTP_MAY_FAIL - puts("\nRetry count exceeded\n"); - net_set_state(NETLOOP_FAIL); -#else - puts("\nRetry count exceeded; starting again\n"); - NetStartAgain(); + char *ethrotate; + + ethrotate = env_get("ethrotate"); + if ((ethrotate && strcmp(ethrotate, "no") == 0) || + net_restart_wrap) { + puts("\nRetry time exceeded\n"); + net_set_state(NETLOOP_FAIL); + } else #endif + { + puts("\nRetry time exceeded; starting again\n"); + net_start_again(); + } } else { - NetSetTimeout(TIMEOUT, BootpTimeout); - BootpRequest(); + bootp_timeout *= 2; + if (bootp_timeout > 2000) + bootp_timeout = 2000; + net_set_timeout_handler(bootp_timeout, bootp_timeout_handler); + bootp_request(); } } @@ -350,19 +417,39 @@ BootpTimeout(void) e += vci_strlen; \ } while (0) +static u8 *add_vci(u8 *e) +{ + char *vci = NULL; + char *env_vci = env_get("bootp_vci"); + +#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_NET_VCI_STRING) + vci = CONFIG_SPL_NET_VCI_STRING; +#elif defined(CONFIG_BOOTP_VCI_STRING) + vci = CONFIG_BOOTP_VCI_STRING; +#endif + + if (env_vci) + vci = env_vci; + + if (vci) + put_vci(e, vci); + + return e; +} + /* * Initialize BOOTP extension fields in the request. */ #if defined(CONFIG_CMD_DHCP) -static int DhcpExtended(u8 *e, int message_type, IPaddr_t ServerID, - IPaddr_t RequestedIP) +static int dhcp_extended(u8 *e, int message_type, struct in_addr server_ip, + struct in_addr requested_ip) { u8 *start = e; u8 *cnt; -#if defined(CONFIG_BOOTP_PXE) +#ifdef CONFIG_LIB_UUID char *uuid; - u16 clientarch; #endif + int clientarch = -1; #if defined(CONFIG_BOOTP_VENDOREX) u8 *x; @@ -385,8 +472,8 @@ static int DhcpExtended(u8 *e, int message_type, IPaddr_t ServerID, *e++ = (576 - 312 + OPT_FIELD_SIZE) >> 8; *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff; - if (ServerID) { - int tmp = ntohl(ServerID); + if (server_ip.s_addr) { + int tmp = ntohl(server_ip.s_addr); *e++ = 54; /* ServerID */ *e++ = 4; @@ -396,8 +483,8 @@ static int DhcpExtended(u8 *e, int message_type, IPaddr_t ServerID, *e++ = tmp & 0xff; } - if (RequestedIP) { - int tmp = ntohl(RequestedIP); + if (requested_ip.s_addr) { + int tmp = ntohl(requested_ip.s_addr); *e++ = 50; /* Requested IP */ *e++ = 4; @@ -407,7 +494,7 @@ static int DhcpExtended(u8 *e, int message_type, IPaddr_t ServerID, *e++ = tmp & 0xff; } #if defined(CONFIG_BOOTP_SEND_HOSTNAME) - hostname = getenv("hostname"); + hostname = env_get("hostname"); if (hostname) { int hostnamelen = strlen(hostname); @@ -418,12 +505,19 @@ static int DhcpExtended(u8 *e, int message_type, IPaddr_t ServerID, } #endif -#if defined(CONFIG_BOOTP_PXE) +#ifdef CONFIG_BOOTP_PXE_CLIENTARCH clientarch = CONFIG_BOOTP_PXE_CLIENTARCH; - *e++ = 93; /* Client System Architecture */ - *e++ = 2; - *e++ = (clientarch >> 8) & 0xff; - *e++ = clientarch & 0xff; +#endif + + if (env_get("bootp_arch")) + clientarch = env_get_ulong("bootp_arch", 16, clientarch); + + if (clientarch > 0) { + *e++ = 93; /* Client System Architecture */ + *e++ = 2; + *e++ = (clientarch >> 8) & 0xff; + *e++ = clientarch & 0xff; + } *e++ = 94; /* Client Network Interface Identifier */ *e++ = 3; @@ -431,7 +525,8 @@ static int DhcpExtended(u8 *e, int message_type, IPaddr_t ServerID, *e++ = 0; /* major revision */ *e++ = 0; /* minor revision */ - uuid = getenv("pxeuuid"); +#ifdef CONFIG_LIB_UUID + uuid = env_get("pxeuuid"); if (uuid) { if (uuid_str_valid(uuid)) { @@ -447,9 +542,7 @@ static int DhcpExtended(u8 *e, int message_type, IPaddr_t ServerID, } #endif -#ifdef CONFIG_BOOTP_VCI_STRING - put_vci(e, CONFIG_BOOTP_VCI_STRING); -#endif + e = add_vci(e); #if defined(CONFIG_BOOTP_VENDOREX) x = dhcp_vendorex_prep(e); @@ -515,7 +608,7 @@ static int DhcpExtended(u8 *e, int message_type, IPaddr_t ServerID, /* * Warning: no field size check - change CONFIG_BOOTP_* at your own risk! */ -static int BootpExtended(u8 *e) +static int bootp_extended(u8 *e) { u8 *start = e; @@ -535,14 +628,7 @@ static int BootpExtended(u8 *e) *e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff; #endif -#if defined(CONFIG_BOOTP_VCI_STRING) || \ - (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_NET_VCI_STRING)) -#ifdef CONFIG_SPL_BUILD - put_vci(e, CONFIG_SPL_NET_VCI_STRING); -#else - put_vci(e, CONFIG_BOOTP_VCI_STRING); -#endif -#endif + add_vci(e); #if defined(CONFIG_BOOTP_SUBNETMASK) *e++ = 1; /* Subnet mask request */ @@ -593,32 +679,58 @@ static int BootpExtended(u8 *e) *e++ = 255; /* End of the list */ + /* + * If nothing in list, remove it altogether. Some DHCP servers get + * upset by this minor faux pas and do not respond at all. + */ + if (e == start + 3) { + printf("*** Warning: no DHCP options requested\n"); + e -= 3; + } + return e - start; } #endif -void -BootpRequest(void) +void bootp_reset(void) +{ + bootp_num_ids = 0; + bootp_try = 0; + bootp_start = get_timer(0); + bootp_timeout = 250; +} + +void bootp_request(void) { uchar *pkt, *iphdr; - struct Bootp_t *bp; + struct bootp_hdr *bp; int extlen, pktlen, iplen; int eth_hdr_size; #ifdef CONFIG_BOOTP_RANDOM_DELAY ulong rand_ms; #endif + u32 bootp_id; + struct in_addr zero_ip; + struct in_addr bcast_ip; + char *ep; /* Environment pointer */ bootstage_mark_name(BOOTSTAGE_ID_BOOTP_START, "bootp_start"); #if defined(CONFIG_CMD_DHCP) dhcp_state = INIT; #endif + ep = env_get("bootpretryperiod"); + if (ep != NULL) + time_taken_max = simple_strtoul(ep, NULL, 10); + else + time_taken_max = TIMEOUT_MS; + #ifdef CONFIG_BOOTP_RANDOM_DELAY /* Random BOOTP delay */ - if (BootpTry == 0) + if (bootp_try == 0) srand_mac(); - if (BootpTry <= 2) /* Start with max 1024 * 1ms */ - rand_ms = rand() >> (22 - BootpTry); + if (bootp_try <= 2) /* Start with max 1024 * 1ms */ + rand_ms = rand() >> (22 - bootp_try); else /* After 3rd BOOTP request max 8192 * 1ms */ rand_ms = rand() >> 19; @@ -627,11 +739,11 @@ BootpRequest(void) #endif /* CONFIG_BOOTP_RANDOM_DELAY */ - printf("BOOTP broadcast %d\n", ++BootpTry); - pkt = NetTxPacket; + printf("BOOTP broadcast %d\n", ++bootp_try); + pkt = net_tx_packet; memset((void *)pkt, 0, PKTSIZE); - eth_hdr_size = NetSetEther(pkt, NetBcastAddr, PROT_IP); + eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP); pkt += eth_hdr_size; /* @@ -642,41 +754,48 @@ BootpRequest(void) * C. Hallinan, DS4.COM, Inc. */ /* net_set_udp_header(pkt, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, - sizeof (struct Bootp_t)); */ + sizeof (struct bootp_hdr)); */ iphdr = pkt; /* We need this later for net_set_udp_header() */ pkt += IP_UDP_HDR_SIZE; - bp = (struct Bootp_t *)pkt; + bp = (struct bootp_hdr *)pkt; bp->bp_op = OP_BOOTREQUEST; bp->bp_htype = HWT_ETHER; bp->bp_hlen = HWL_ETHER; bp->bp_hops = 0; - bp->bp_secs = htons(get_timer(0) / 1000); - NetWriteIP(&bp->bp_ciaddr, 0); - NetWriteIP(&bp->bp_yiaddr, 0); - NetWriteIP(&bp->bp_siaddr, 0); - NetWriteIP(&bp->bp_giaddr, 0); - memcpy(bp->bp_chaddr, NetOurEther, 6); - copy_filename(bp->bp_file, BootFile, sizeof(bp->bp_file)); + /* + * according to RFC1542, should be 0 on first request, secs since + * first request otherwise + */ + bp->bp_secs = htons(get_timer(bootp_start) / 1000); + zero_ip.s_addr = 0; + net_write_ip(&bp->bp_ciaddr, zero_ip); + net_write_ip(&bp->bp_yiaddr, zero_ip); + net_write_ip(&bp->bp_siaddr, zero_ip); + net_write_ip(&bp->bp_giaddr, zero_ip); + memcpy(bp->bp_chaddr, net_ethaddr, 6); + copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file)); /* Request additional information from the BOOTP/DHCP server */ #if defined(CONFIG_CMD_DHCP) - extlen = DhcpExtended((u8 *)bp->bp_vend, DHCP_DISCOVER, 0, 0); + extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_DISCOVER, zero_ip, + zero_ip); #else - extlen = BootpExtended((u8 *)bp->bp_vend); + extlen = bootp_extended((u8 *)bp->bp_vend); #endif /* * Bootp ID is the lower 4 bytes of our ethernet address * plus the current time in ms. */ - BootpID = ((ulong)NetOurEther[2] << 24) - | ((ulong)NetOurEther[3] << 16) - | ((ulong)NetOurEther[4] << 8) - | (ulong)NetOurEther[5]; - BootpID += get_timer(0); - BootpID = htonl(BootpID); - NetCopyLong(&bp->bp_id, &BootpID); + bootp_id = ((u32)net_ethaddr[2] << 24) + | ((u32)net_ethaddr[3] << 16) + | ((u32)net_ethaddr[4] << 8) + | (u32)net_ethaddr[5]; + bootp_id += get_timer(0); + bootp_id = htonl(bootp_id); + bootp_add_id(bootp_id); + net_copy_u32(&bp->bp_id, &bootp_id); /* * Calculate proper packet lengths taking into account the @@ -684,22 +803,22 @@ BootpRequest(void) */ iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen; pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen; - net_set_udp_header(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen); - NetSetTimeout(SELECT_TIMEOUT, BootpTimeout); + bcast_ip.s_addr = 0xFFFFFFFFL; + net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen); + net_set_timeout_handler(bootp_timeout, bootp_timeout_handler); #if defined(CONFIG_CMD_DHCP) dhcp_state = SELECTING; - net_set_udp_handler(DhcpHandler); + net_set_udp_handler(dhcp_handler); #else - net_set_udp_handler(BootpHandler); + net_set_udp_handler(bootp_handler); #endif - NetSendPacket(NetTxPacket, pktlen); + net_send_packet(net_tx_packet, pktlen); } #if defined(CONFIG_CMD_DHCP) -static void DhcpOptionsProcess(uchar *popt, struct Bootp_t *bp) +static void dhcp_process_options(uchar *popt, uchar *end) { - uchar *end = popt + BOOTP_HDR_SIZE; int oplen, size; #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET) int *to_ptr; @@ -708,54 +827,60 @@ static void DhcpOptionsProcess(uchar *popt, struct Bootp_t *bp) while (popt < end && *popt != 0xff) { oplen = *(popt + 1); switch (*popt) { + case 0: + oplen = -1; /* Pad omits len byte */ + break; case 1: - NetCopyIP(&NetOurSubnetMask, (popt + 2)); + net_copy_ip(&net_netmask, (popt + 2)); break; #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET) case 2: /* Time offset */ - to_ptr = &NetTimeOffset; - NetCopyLong((ulong *)to_ptr, (ulong *)(popt + 2)); - NetTimeOffset = ntohl(NetTimeOffset); + to_ptr = &net_ntp_time_offset; + net_copy_u32((u32 *)to_ptr, (u32 *)(popt + 2)); + net_ntp_time_offset = ntohl(net_ntp_time_offset); break; #endif case 3: - NetCopyIP(&NetOurGatewayIP, (popt + 2)); + net_copy_ip(&net_gateway, (popt + 2)); break; case 6: - NetCopyIP(&NetOurDNSIP, (popt + 2)); + net_copy_ip(&net_dns_server, (popt + 2)); #if defined(CONFIG_BOOTP_DNS2) if (*(popt + 1) > 4) - NetCopyIP(&NetOurDNS2IP, (popt + 2 + 4)); + net_copy_ip(&net_dns_server2, (popt + 2 + 4)); #endif break; case 12: size = truncate_sz("Host Name", - sizeof(NetOurHostName), oplen); - memcpy(&NetOurHostName, popt + 2, size); - NetOurHostName[size] = 0; + sizeof(net_hostname), oplen); + memcpy(&net_hostname, popt + 2, size); + net_hostname[size] = 0; break; case 15: /* Ignore Domain Name Option */ break; case 17: size = truncate_sz("Root Path", - sizeof(NetOurRootPath), oplen); - memcpy(&NetOurRootPath, popt + 2, size); - NetOurRootPath[size] = 0; + sizeof(net_root_path), oplen); + memcpy(&net_root_path, popt + 2, size); + net_root_path[size] = 0; break; case 28: /* Ignore Broadcast Address Option */ break; #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER) case 42: /* NTP server IP */ - NetCopyIP(&NetNtpServerIP, (popt + 2)); + net_copy_ip(&net_ntp_server, (popt + 2)); break; #endif case 51: - NetCopyLong(&dhcp_leasetime, (ulong *) (popt + 2)); + net_copy_u32(&dhcp_leasetime, (u32 *)(popt + 2)); + break; + case 52: + dhcp_option_overload = popt[2]; break; case 53: /* Ignore Message Type Option */ break; case 54: - NetCopyIP(&NetDHCPServerIP, (popt + 2)); + net_copy_ip(&dhcp_server_ip, (popt + 2)); break; case 58: /* Ignore Renewal Time Option */ break; @@ -763,31 +888,11 @@ static void DhcpOptionsProcess(uchar *popt, struct Bootp_t *bp) break; case 66: /* Ignore TFTP server name */ break; - case 67: /* vendor opt bootfile */ - /* - * I can't use dhcp_vendorex_proc here because I need - * to write into the bootp packet - even then I had to - * pass the bootp packet pointer into here as the - * second arg - */ - size = truncate_sz("Opt Boot File", - sizeof(bp->bp_file), - oplen); - if (bp->bp_file[0] == '\0' && size > 0) { - /* - * only use vendor boot file if we didn't - * receive a boot file in the main non-vendor - * part of the packet - god only knows why - * some vendors chose not to use this perfectly - * good spot to store the boot file (join on - * Tru64 Unix) it seems mind bogglingly crazy - * to me - */ - printf("*** WARNING: using vendor " - "optional boot file\n"); - memcpy(bp->bp_file, popt + 2, size); - bp->bp_file[size] = '\0'; - } + case 67: /* Bootfile option */ + size = truncate_sz("Bootfile", + sizeof(net_boot_file_name), oplen); + memcpy(&net_boot_file_name, popt + 2, size); + net_boot_file_name[size] = 0; break; default: #if defined(CONFIG_BOOTP_VENDOREX) @@ -795,51 +900,88 @@ static void DhcpOptionsProcess(uchar *popt, struct Bootp_t *bp) break; #endif printf("*** Unhandled DHCP Option in OFFER/ACK:" - " %d\n", *popt); + " %d\n", *popt); break; } popt += oplen + 2; /* Process next option */ } } -static int DhcpMessageType(unsigned char *popt) +static void dhcp_packet_process_options(struct bootp_hdr *bp) { - if (NetReadLong((ulong *)popt) != htonl(BOOTP_VENDOR_MAGIC)) + uchar *popt = (uchar *)&bp->bp_vend[4]; + uchar *end = popt + BOOTP_HDR_SIZE; + + if (net_read_u32((u32 *)&bp->bp_vend[0]) != htonl(BOOTP_VENDOR_MAGIC)) + return; + + dhcp_option_overload = 0; + + /* + * The 'options' field MUST be interpreted first, 'file' next, + * 'sname' last. + */ + dhcp_process_options(popt, end); + + if (dhcp_option_overload & OVERLOAD_FILE) { + popt = (uchar *)bp->bp_file; + end = popt + sizeof(bp->bp_file); + dhcp_process_options(popt, end); + } + + if (dhcp_option_overload & OVERLOAD_SNAME) { + popt = (uchar *)bp->bp_sname; + end = popt + sizeof(bp->bp_sname); + dhcp_process_options(popt, end); + } +} + +static int dhcp_message_type(unsigned char *popt) +{ + if (net_read_u32((u32 *)popt) != htonl(BOOTP_VENDOR_MAGIC)) return -1; popt += 4; while (*popt != 0xff) { if (*popt == 53) /* DHCP Message Type */ return *(popt + 2); - popt += *(popt + 1) + 2; /* Scan through all options */ + if (*popt == 0) { + /* Pad */ + popt += 1; + } else { + /* Scan through all options */ + popt += *(popt + 1) + 2; + } } return -1; } -static void DhcpSendRequestPkt(struct Bootp_t *bp_offer) +static void dhcp_send_request_packet(struct bootp_hdr *bp_offer) { uchar *pkt, *iphdr; - struct Bootp_t *bp; + struct bootp_hdr *bp; int pktlen, iplen, extlen; int eth_hdr_size; - IPaddr_t OfferedIP; + struct in_addr offered_ip; + struct in_addr zero_ip; + struct in_addr bcast_ip; - debug("DhcpSendRequestPkt: Sending DHCPREQUEST\n"); - pkt = NetTxPacket; + debug("dhcp_send_request_packet: Sending DHCPREQUEST\n"); + pkt = net_tx_packet; memset((void *)pkt, 0, PKTSIZE); - eth_hdr_size = NetSetEther(pkt, NetBcastAddr, PROT_IP); + eth_hdr_size = net_set_ether(pkt, net_bcast_ethaddr, PROT_IP); pkt += eth_hdr_size; iphdr = pkt; /* We'll need this later to set proper pkt size */ pkt += IP_UDP_HDR_SIZE; - bp = (struct Bootp_t *)pkt; + bp = (struct bootp_hdr *)pkt; bp->bp_op = OP_BOOTREQUEST; bp->bp_htype = HWT_ETHER; bp->bp_hlen = HWL_ETHER; bp->bp_hops = 0; - bp->bp_secs = htons(get_timer(0) / 1000); + bp->bp_secs = htons(get_timer(bootp_start) / 1000); /* Do not set the client IP, your IP, or server IP yet, since it * hasn't been ACK'ed by the server yet */ @@ -847,54 +989,59 @@ static void DhcpSendRequestPkt(struct Bootp_t *bp_offer) * RFC3046 requires Relay Agents to discard packets with * nonzero and offered giaddr */ - NetWriteIP(&bp->bp_giaddr, 0); + zero_ip.s_addr = 0; + net_write_ip(&bp->bp_giaddr, zero_ip); - memcpy(bp->bp_chaddr, NetOurEther, 6); + memcpy(bp->bp_chaddr, net_ethaddr, 6); + copy_filename(bp->bp_file, net_boot_file_name, sizeof(bp->bp_file)); /* * ID is the id of the OFFER packet */ - NetCopyLong(&bp->bp_id, &bp_offer->bp_id); + net_copy_u32(&bp->bp_id, &bp_offer->bp_id); /* * Copy options from OFFER packet if present */ /* Copy offered IP into the parameters request list */ - NetCopyIP(&OfferedIP, &bp_offer->bp_yiaddr); - extlen = DhcpExtended((u8 *)bp->bp_vend, DHCP_REQUEST, - NetDHCPServerIP, OfferedIP); + net_copy_ip(&offered_ip, &bp_offer->bp_yiaddr); + extlen = dhcp_extended((u8 *)bp->bp_vend, DHCP_REQUEST, + dhcp_server_ip, offered_ip); iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen; pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen; - net_set_udp_header(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen); + bcast_ip.s_addr = 0xFFFFFFFFL; + net_set_udp_header(iphdr, bcast_ip, PORT_BOOTPS, PORT_BOOTPC, iplen); #ifdef CONFIG_BOOTP_DHCP_REQUEST_DELAY udelay(CONFIG_BOOTP_DHCP_REQUEST_DELAY); #endif /* CONFIG_BOOTP_DHCP_REQUEST_DELAY */ debug("Transmitting DHCPREQUEST packet: len = %d\n", pktlen); - NetSendPacket(NetTxPacket, pktlen); + net_send_packet(net_tx_packet, pktlen); } /* * Handle DHCP received packets. */ -static void -DhcpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, - unsigned len) +static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip, + unsigned src, unsigned len) { - struct Bootp_t *bp = (struct Bootp_t *)pkt; + struct bootp_hdr *bp = (struct bootp_hdr *)pkt; debug("DHCPHandler: got packet: (src=%d, dst=%d, len=%d) state: %d\n", - src, dest, len, dhcp_state); + src, dest, len, dhcp_state); /* Filter out pkts we don't want */ - if (BootpCheckPkt(pkt, dest, src, len)) + if (check_reply_packet(pkt, dest, src, len)) return; - debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state:" - " %d\n", src, dest, len, dhcp_state); + debug("DHCPHandler: got DHCP packet: (src=%d, dst=%d, len=%d) state: " + "%d\n", src, dest, len, dhcp_state); + + if (net_read_ip(&bp->bp_yiaddr).s_addr == 0) + return; switch (dhcp_state) { case SELECTING: @@ -910,16 +1057,14 @@ DhcpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, CONFIG_SYS_BOOTFILE_PREFIX, strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0) { #endif /* CONFIG_SYS_BOOTFILE_PREFIX */ + dhcp_packet_process_options(bp); + efi_net_set_dhcp_ack(pkt, len); debug("TRANSITIONING TO REQUESTING STATE\n"); dhcp_state = REQUESTING; - if (NetReadLong((ulong *)&bp->bp_vend[0]) == - htonl(BOOTP_VENDOR_MAGIC)) - DhcpOptionsProcess((u8 *)&bp->bp_vend[4], bp); - - NetSetTimeout(TIMEOUT, BootpTimeout); - DhcpSendRequestPkt(bp); + net_set_timeout_handler(5000, bootp_timeout_handler); + dhcp_send_request_packet(bp); #ifdef CONFIG_SYS_BOOTFILE_PREFIX } #endif /* CONFIG_SYS_BOOTFILE_PREFIX */ @@ -929,17 +1074,16 @@ DhcpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, case REQUESTING: debug("DHCP State: REQUESTING\n"); - if (DhcpMessageType((u8 *)bp->bp_vend) == DHCP_ACK) { - if (NetReadLong((ulong *)&bp->bp_vend[0]) == - htonl(BOOTP_VENDOR_MAGIC)) - DhcpOptionsProcess((u8 *)&bp->bp_vend[4], bp); + if (dhcp_message_type((u8 *)bp->bp_vend) == DHCP_ACK) { + dhcp_packet_process_options(bp); /* Store net params from reply */ - BootpCopyNetParams(bp); + store_net_params(bp); dhcp_state = BOUND; - printf("DHCP client bound to address %pI4\n", - &NetOurIP); + printf("DHCP client bound to address %pI4 (%lu ms)\n", + &net_ip, get_timer(bootp_start)); + net_set_timeout_handler(0, (thand_f *)0); bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP, - "bootp_stop"); + "bootp_stop"); net_auto_load(); return; @@ -952,11 +1096,10 @@ DhcpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, puts("DHCP: INVALID STATE\n"); break; } - } -void DhcpRequest(void) +void dhcp_request(void) { - BootpRequest(); + bootp_request(); } #endif /* CONFIG_CMD_DHCP */