/* * netsniff-ng - the packet sniffing beast * Copyright 2012 Markus Amend , Deutsche Flugsicherung GmbH * Subject to the GPL, version 2. * * http://www.ieee802.org/1/pages/802.1ad.html */ #include #include #include /* for ntohs() */ #include "proto.h" #include "protos.h" #include "dissector_eth.h" #include "built_in.h" #include "pkt_buff.h" struct QinQhdr { uint16_t TCI; uint16_t TPID; } __packed; static void QinQ_full(struct pkt_buff *pkt) { uint16_t tci; struct QinQhdr *QinQ = (struct QinQhdr *) pkt_pull(pkt, sizeof(*QinQ)); if (QinQ == NULL) return; tci = ntohs(QinQ->TCI); tprintf(" [ VLAN QinQ "); tprintf("Prio (%d), ", (tci & 0xE000) >> 13); tprintf("DEI (%d), ", (tci & 0x1000) >> 12); tprintf("ID (%d), ", (tci & 0x0FFF)); tprintf("Proto (0x%.4x)", ntohs(QinQ->TPID)); tprintf(" ]\n"); pkt_set_proto(pkt, ð_lay2, ntohs(QinQ->TPID)); } static void QinQ_less(struct pkt_buff *pkt) { uint16_t tci; struct QinQhdr *QinQ = (struct QinQhdr *) pkt_pull(pkt, sizeof(*QinQ)); if (QinQ == NULL) return; tci = ntohs(QinQ->TCI); tprintf(" VLAN%d", (tci & 0x0FFF)); pkt_set_proto(pkt, ð_lay2, ntohs(QinQ->TPID)); } struct protocol QinQ_ops = { .key = 0x88a8, .print_full = QinQ_full, .print_less = QinQ_less, }; tion> net-next plumbingsTobias Klauser
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