From 78c896b3b3127515478090c19447e27dc406427e Mon Sep 17 00:00:00 2001 From: Jianfeng Tan Date: Mon, 18 Nov 2019 06:59:50 +0000 Subject: TLDKv2 Signed-off-by: Jianfeng Tan Signed-off-by: Jielong Zhou Signed-off-by: Jian Zhang Signed-off-by: Chen Zhao Change-Id: I55c39de4c6cd30f991f35631eb507f770230f08e --- test/packetdrill/mpls_packet.c | 77 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 test/packetdrill/mpls_packet.c (limited to 'test/packetdrill/mpls_packet.c') diff --git a/test/packetdrill/mpls_packet.c b/test/packetdrill/mpls_packet.c new file mode 100644 index 0000000..2448681 --- /dev/null +++ b/test/packetdrill/mpls_packet.c @@ -0,0 +1,77 @@ +/* + * Copyright 2013 Google Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ +/* + * Author: ncardwell@google.com (Neal Cardwell) + * + * Implementation for module for formatting MPLS packets. + */ + +#include "mpls_packet.h" + +#include "mpls.h" + +int new_mpls_stack_entry(s64 label, s64 traffic_class, + bool is_stack_bottom, s64 ttl, + struct mpls *mpls, char **error) +{ + if ((label < 0) || (label >= (1<<20))) { + asprintf(error, "MPLS label out of range for 20 bits"); + return STATUS_ERR; + } + + if ((traffic_class < 0) || (traffic_class >= (1<<3))) { + asprintf(error, "MPLS traffic_class out of range for 3 bits"); + return STATUS_ERR; + } + + if ((ttl < 0) || (ttl >= (1<<8))) { + asprintf(error, "MPLS ttl out of range for 8 bits"); + return STATUS_ERR; + } + + mpls_entry_set(label, traffic_class, is_stack_bottom, ttl, mpls); + return STATUS_OK; +} + +int mpls_header_append(struct packet *packet, struct mpls_stack *mpls_stack, + char **error) +{ + struct header *header; + int mpls_bytes = mpls_stack->length * sizeof(struct mpls); + + header = packet_append_header(packet, HEADER_MPLS, mpls_bytes); + if (header == NULL) { + asprintf(error, "too many headers"); + return STATUS_ERR; + } + + memcpy(header->h.mpls, mpls_stack->entries, mpls_bytes); + + return STATUS_OK; +} + +int mpls_header_finish(struct packet *packet, + struct header *header, struct header *next_inner) +{ + int mpls_bytes = header->header_bytes + next_inner->total_bytes; + + header->total_bytes = mpls_bytes; + + return STATUS_OK; +} -- cgit 1.2.3-korg