From 20a773677230374ffa2d5d140f7d46032fb7bc9d Mon Sep 17 00:00:00 2001 From: Mauro Sardara Date: Fri, 18 Sep 2020 17:39:03 +0200 Subject: Revert to [HICN-638] Check if systemd is running before enabling hicn-light service Signed-off-by: Mauro Sardara Change-Id: I1810d96e001a4e6e097e1efa331b682af750925d --- hicn-plugin/src/parser.h | 121 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 121 insertions(+) create mode 100644 hicn-plugin/src/parser.h (limited to 'hicn-plugin/src/parser.h') diff --git a/hicn-plugin/src/parser.h b/hicn-plugin/src/parser.h new file mode 100644 index 000000000..e79d65831 --- /dev/null +++ b/hicn-plugin/src/parser.h @@ -0,0 +1,121 @@ +/* + * Copyright (c) 2017-2019 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __HICN_PARSER_H__ +#define __HICN_PARSER_H__ + +#include + +#include "hicn.h" +#include "error.h" + +/** + * @file parser.h + */ + +/* + * Key type codes for header, header tlvs, body tlvs, and child tlvs + */ + +// FIXME(reuse lib struct, no more control ?) +enum hicn_pkt_type_e +{ + HICN_PKT_TYPE_INTEREST = 0, + HICN_PKT_TYPE_CONTENT = 1, +}; + +/** + * @brief Parse an interest packet + * + * @param pkt vlib buffer holding the interest + * @param name return variable that will point to the hicn name + * @param namelen return valiable that will hold the length of the name + * @param pkt_hdrp return valiable that will point to the packet header + * @param isv6 return variable that will be equale to 1 is the header is ipv6 + */ +always_inline int +hicn_interest_parse_pkt (vlib_buffer_t * pkt, hicn_name_t * name, + u16 * namelen, hicn_header_t ** pkt_hdrp, u8 * isv6) +{ + if (pkt == NULL) + return HICN_ERROR_PARSER_PKT_INVAL; + hicn_header_t *pkt_hdr = vlib_buffer_get_current (pkt); + *pkt_hdrp = pkt_hdr; + u8 *ip_pkt = vlib_buffer_get_current (pkt); + *isv6 = hicn_is_v6 (pkt_hdr); + u8 ip_proto = (*isv6) * IPPROTO_IPV6; + u8 next_proto_offset = 6 + (1 - *isv6) * 3; + //in the ipv6 header the next header field is at byte 6 + // in the ipv4 header the protocol field is at byte 9 + hicn_type_t type = (hicn_type_t) { { + .l4 = IPPROTO_NONE,.l3 = + IPPROTO_NONE,.l2 = + ip_pkt[next_proto_offset],.l1 = + ip_proto} + }; + hicn_get_buffer (pkt)->type = type; + + hicn_ops_vft[type.l1]->get_interest_name (type, &pkt_hdr->protocol, name); + *namelen = (1 - (*isv6)) * HICN_V4_NAME_LEN + (*isv6) * HICN_V6_NAME_LEN; + + return HICN_ERROR_NONE; +} + +/** + * @brief Parse a data packet + * + * @param pkt vlib buffer holding the interest + * @param name return variable that will point to the hicn name + * @param namelen return valiable that will hold the length of the name + * @param pkt_hdrp return valiable that will point to the packet header + * @param isv6 return variable that will be equale to 1 is the header is ipv6 + */ +always_inline int +hicn_data_parse_pkt (vlib_buffer_t * pkt, hicn_name_t * name, + u16 * namelen, hicn_header_t ** pkt_hdrp, u8 * isv6) +{ + if (pkt == NULL) + return HICN_ERROR_PARSER_PKT_INVAL; + hicn_header_t *pkt_hdr = vlib_buffer_get_current (pkt); + *pkt_hdrp = pkt_hdr; + *pkt_hdrp = pkt_hdr; + u8 *ip_pkt = vlib_buffer_get_current (pkt); + *isv6 = hicn_is_v6 (pkt_hdr); + u8 ip_proto = (*isv6) * IPPROTO_IPV6; + /* + * in the ipv6 header the next header field is at byte 6 in the ipv4 + * header the protocol field is at byte 9 + */ + u8 next_proto_offset = 6 + (1 - *isv6) * 3; + hicn_type_t type = (hicn_type_t) { {.l4 = IPPROTO_NONE,.l3 = + IPPROTO_NONE,.l2 = + ip_pkt[next_proto_offset],.l1 = + ip_proto} + }; + hicn_get_buffer (pkt)->type = type; + hicn_ops_vft[type.l1]->get_data_name (type, &pkt_hdr->protocol, name); + *namelen = (1 - (*isv6)) * HICN_V4_NAME_LEN + (*isv6) * HICN_V6_NAME_LEN; + + return HICN_ERROR_NONE; +} + + +#endif /* // __HICN_PARSER_H__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: eval: (c-set-style "gnu") End: + */ -- cgit 1.2.3-korg