The following commit has been merged in the master branch: commit e177d6e710bf42825f16772e6b3329caf0945b3f Author: Marek Lindner lindner_marek@yahoo.de Date: Sun May 29 18:11:26 2011 +0200

batctl: tcpdump - add support for tt request / roaming advertisement packets

Signed-off-by: Marek Lindner lindner_marek@yahoo.de Acked-by: Antonio Quartulli ordex@autistici.org

diff --git a/tcpdump.c b/tcpdump.c index a715e27..6f1adc1 100644 --- a/tcpdump.c +++ b/tcpdump.c @@ -52,7 +52,7 @@ if ((size_t)(buff_len) < (check_len)) { \ }

static unsigned short dump_level = DUMP_TYPE_BATOGM | DUMP_TYPE_BATICMP | DUMP_TYPE_BATUCAST | - DUMP_TYPE_BATBCAST | DUMP_TYPE_BATVIS | DUMP_TYPE_BATFRAG | DUMP_TYPE_NONBAT; + DUMP_TYPE_BATBCAST | DUMP_TYPE_BATVIS | DUMP_TYPE_BATFRAG | DUMP_TYPE_BATTT | DUMP_TYPE_NONBAT;

static void parse_eth_hdr(unsigned char *packet_buff, ssize_t buff_len, int read_opt, int time_printed);

@@ -63,14 +63,15 @@ static void tcpdump_usage(void) printf(" \t -h print this help\n"); printf(" \t -n don't convert addresses to bat-host names\n"); printf(" \t -p dump specific packet type\n"); - printf(" \t\t%d - batman ogm packets\n", DUMP_TYPE_BATOGM); - printf(" \t\t%d - batman icmp packets\n", DUMP_TYPE_BATICMP); - printf(" \t\t%d - batman unicast packets\n", DUMP_TYPE_BATUCAST); - printf(" \t\t%d - batman broadcast packets\n", DUMP_TYPE_BATBCAST); - printf(" \t\t%d - batman vis packets\n", DUMP_TYPE_BATVIS); - printf(" \t\t%d - batman fragmented packets\n", DUMP_TYPE_BATFRAG); - printf(" \t\t%d - non batman packets\n", DUMP_TYPE_NONBAT); - printf(" \t\t%d - batman ogm & non batman packets\n", DUMP_TYPE_BATOGM | DUMP_TYPE_NONBAT); + printf(" \t\t%3d - batman ogm packets\n", DUMP_TYPE_BATOGM); + printf(" \t\t%3d - batman icmp packets\n", DUMP_TYPE_BATICMP); + printf(" \t\t%3d - batman unicast packets\n", DUMP_TYPE_BATUCAST); + printf(" \t\t%3d - batman broadcast packets\n", DUMP_TYPE_BATBCAST); + printf(" \t\t%3d - batman vis packets\n", DUMP_TYPE_BATVIS); + printf(" \t\t%3d - batman fragmented packets\n", DUMP_TYPE_BATFRAG); + printf(" \t\t%3d - batman tt / roaming packets\n", DUMP_TYPE_BATTT); + printf(" \t\t%3d - non batman packets\n", DUMP_TYPE_NONBAT); + printf(" \t\t%3d - batman ogm & non batman packets\n", DUMP_TYPE_BATOGM | DUMP_TYPE_NONBAT); }

static int print_time(void) @@ -247,6 +248,58 @@ static void dump_vlan(unsigned char *packet_buff, ssize_t buff_len, int read_opt parse_eth_hdr(packet_buff + 4, buff_len - 4, read_opt, time_printed); }

+static void dump_batman_tt(unsigned char *packet_buff, ssize_t buff_len, int read_opt, int time_printed) +{ + struct ether_header *ether_header; + struct tt_query_packet *tt_query_packet; + + LEN_CHECK((size_t)buff_len - sizeof(struct ether_header), sizeof(struct tt_query_packet), "BAT TT"); + + ether_header = (struct ether_header *)packet_buff; + tt_query_packet = (struct tt_query_packet *)(packet_buff + sizeof(struct ether_header)); + + if (!time_printed) + print_time(); + + printf("BAT %s > ", + get_name_by_macaddr((struct ether_addr *)tt_query_packet->src, read_opt)); + + printf("%s: TT %s, ttvn %d, %s %d, ttl %2d, v %d, flags [%c%c%c], length %zu\n", + get_name_by_macaddr((struct ether_addr *)tt_query_packet->dst, read_opt), + tt_query_packet->flags & TT_RESPONSE ? "response" : "request", + tt_query_packet->ttvn, tt_query_packet->flags & TT_RESPONSE ? "entries" : "crc", + ntohs(tt_query_packet->tt_data), tt_query_packet->ttl, tt_query_packet->version, + (tt_query_packet->flags & TT_REQUEST ? 'Q' : '.'), + (tt_query_packet->flags & TT_RESPONSE ? 'P' : '.'), + (tt_query_packet->flags & TT_FULL_TABLE ? 'F' : '.'), + (size_t)buff_len - sizeof(struct ether_header)); +} + +static void dump_batman_roam(unsigned char *packet_buff, ssize_t buff_len, int read_opt, int time_printed) +{ + struct ether_header *ether_header; + struct roam_adv_packet *roam_adv_packet; + + LEN_CHECK((size_t)buff_len - sizeof(struct ether_header), sizeof(struct roam_adv_packet), "BAT ROAM"); + + ether_header = (struct ether_header *)packet_buff; + roam_adv_packet = (struct roam_adv_packet *)(packet_buff + sizeof(struct ether_header)); + + if (!time_printed) + print_time(); + + printf("BAT %s > ", + get_name_by_macaddr((struct ether_addr *)roam_adv_packet->src, read_opt)); + + printf("%s: ROAM, ", + get_name_by_macaddr((struct ether_addr *)roam_adv_packet->dst, read_opt)); + + printf("client %s, ttl %2d, v %d, length %zu\n", + get_name_by_macaddr((struct ether_addr *)roam_adv_packet->client, read_opt), + roam_adv_packet->ttl, roam_adv_packet->version, + (size_t)buff_len - sizeof(struct ether_header)); +} + static void dump_batman_ogm(unsigned char *packet_buff, ssize_t buff_len, int read_opt, int time_printed) { struct ether_header *ether_header; @@ -263,9 +316,9 @@ static void dump_batman_ogm(unsigned char *packet_buff, ssize_t buff_len, int re printf("BAT %s: ", get_name_by_macaddr((struct ether_addr *)batman_packet->orig, read_opt));

- printf("OGM via neigh %s, seq %u, tq %3d, ttl %2d, v %d, flags [%c%c%c%c], length %zu\n", + printf("OGM via neigh %s, seq %u, tq %3d, ttvn %d, ttl %2d, v %d, flags [%c%c%c%c], length %zu\n", get_name_by_macaddr((struct ether_addr *)ether_header->ether_shost, read_opt), - ntohl(batman_packet->seqno), batman_packet->tq, + ntohl(batman_packet->seqno), batman_packet->tq, batman_packet->ttvn, batman_packet->ttl, batman_packet->version, (batman_packet->flags & DIRECTLINK ? 'D' : '.'), (batman_packet->flags & VIS_SERVER ? 'V' : '.'), @@ -334,9 +387,9 @@ static void dump_batman_ucast(unsigned char *packet_buff, ssize_t buff_len, int printf("BAT %s > ", get_name_by_macaddr((struct ether_addr *)ether_header->ether_shost, read_opt));

- printf("%s: UCAST, ttl %hhu, ", + printf("%s: UCAST, ttvn %d, ttl %hhu, ", get_name_by_macaddr((struct ether_addr *)unicast_packet->dest, read_opt), - unicast_packet->ttl); + unicast_packet->ttvn, unicast_packet->ttl);

parse_eth_hdr(packet_buff + ETH_HLEN + sizeof(struct unicast_packet), buff_len - ETH_HLEN - sizeof(struct unicast_packet), @@ -385,9 +438,9 @@ static void dump_batman_frag(unsigned char *packet_buff, ssize_t buff_len, int r printf("BAT %s > ", get_name_by_macaddr((struct ether_addr *)unicast_frag_packet->orig, read_opt));

- printf("%s: FRAG, seq %hu, ttl %hhu, flags [%c%c], ", + printf("%s: FRAG, seq %hu, ttvn %d, ttl %hhu, flags [%c%c], ", get_name_by_macaddr((struct ether_addr *)unicast_frag_packet->dest, read_opt), - ntohs(unicast_frag_packet->seqno), unicast_frag_packet->ttl, + ntohs(unicast_frag_packet->seqno), unicast_frag_packet->ttvn, unicast_frag_packet->ttl, (unicast_frag_packet->flags & UNI_FRAG_HEAD ? 'H' : '.'), (unicast_frag_packet->flags & UNI_FRAG_LARGETAIL ? 'L' : '.'));

@@ -447,6 +500,14 @@ static void parse_eth_hdr(unsigned char *packet_buff, ssize_t buff_len, int read if (dump_level & DUMP_TYPE_BATFRAG) dump_batman_frag(packet_buff, buff_len, read_opt, time_printed); break; + case BAT_TT_QUERY: + if (dump_level & DUMP_TYPE_BATTT) + dump_batman_tt(packet_buff, buff_len, read_opt, time_printed); + break; + case BAT_ROAM_ADV: + if (dump_level & DUMP_TYPE_BATTT) + dump_batman_roam(packet_buff, buff_len, read_opt, time_printed); + break; default: printf("Warning - packet contains unknown batman packet type: 0x%02x\n", batman_packet->packet_type); break; diff --git a/tcpdump.h b/tcpdump.h index 4364be1..925b116 100644 --- a/tcpdump.h +++ b/tcpdump.h @@ -37,7 +37,8 @@ #define DUMP_TYPE_BATBCAST 8 #define DUMP_TYPE_BATVIS 16 #define DUMP_TYPE_BATFRAG 32 -#define DUMP_TYPE_NONBAT 64 +#define DUMP_TYPE_BATTT 64 +#define DUMP_TYPE_NONBAT 128

#define IEEE80211_FCTL_FTYPE 0x0c00 #define IEEE80211_FCTL_TODS 0x0001