/* * netsniff-ng - the packet sniffing beast * Copyright 2012 Markus Amend , Deutsche Flugsicherung GmbH * Subject to the GPL, version 2. * * http://tools.ietf.org/html/rfc3032 */ #include #include #include /* for ntohs() */ #include #include "proto.h" #include "protos.h" #include "dissector_eth.h" #include "built_in.h" #include "pkt_buff.h" struct mpls_uchdr { uint32_t mpls_uc_hdr; } __packed; static int mpls_uc_next_proto(struct pkt_buff *pkt) { uint8_t proto; uint16_t key = 0; if (pkt_len(pkt)) proto = *(pkt->data); else return -EIO; /* FIXME: Right now only test for IP Version field */ switch (proto >> 4) { case 4: key = 0x0800; /* IPv4*/ break; case 6: key = 0x86DD; /* IPv6*/ break; default: /* Nothing detected ... */ return -ENOENT; } return key; } static void mpls_uc_full(struct pkt_buff *pkt) { int next; uint32_t mpls_uc_data; struct mpls_uchdr *mpls_uc; uint8_t s = 0; do { mpls_uc = (struct mpls_uchdr *) pkt_pull(pkt, sizeof(*mpls_uc)); if (mpls_uc == NULL) return; mpls_uc_data = ntohl(mpls_uc->mpls_uc_hdr); s = (mpls_uc_data >> 8) & 0x1; tprintf(" [ MPLS "); tprintf("Label (%u), ", mpls_uc_data >> 12); tprintf("Exp (%u), ", (mpls_uc_data >> 9) & 0x7); tprintf("S (%u), ", s); tprintf("TTL (%u)", (mpls_uc_data & 0xFF)); tprintf(" ]\n"); } while (!s); next = mpls_uc_next_proto(pkt); if (next < 0) return; pkt_set_proto(pkt, ð_lay2, (uint16_t) next); } static void mpls_uc_less(struct pkt_buff *pkt) { int next; uint32_t mpls_uc_data; struct mpls_uchdr *mpls_uc; uint8_t s = 0; do { mpls_uc = (struct mpls_uchdr *) pkt_pull(pkt, sizeof(*mpls_uc)); if (mpls_uc == NULL) return; mpls_uc_data = ntohl(mpls_uc->mpls_uc_hdr); s = (mpls_uc_data >> 8) & 0x1; tprintf(" MPLS/%u", mpls_uc_data >> 12); } while (!s); next = mpls_uc_next_proto(pkt); if (next < 0) return; pkt_set_proto(pkt, ð_lay2, (uint16_t) next); } struct protocol mpls_uc_ops = { .key = 0x8847, .print_full = mpls_uc_full, .print_less = mpls_uc_less, }; >diff
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authorDavid S. Miller <davem@davemloft.net>2016-09-19 21:32:31 -0400
committerDavid S. Miller <davem@davemloft.net>2016-09-19 21:32:31 -0400
commit583c139c71ae1919c7c94b43fb55d6777ef30eaf (patch)
tree2acb53fef25409cf5b63cc3b9d4707231935876f
parent07b26c9454a2a19fff86d6fcf2aba6bc801eb8d8 (diff)
parent350a714960eb8a980c913c9be5a96bb18b2fe9da (diff)
Merge branch 'bnxt_en-next'
Michael Chan says: ==================== bnxt: update for net-next. Misc. changes and minor bug fixes for net-next. Please review. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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