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bgpd: prefix-sid srv6 l3vpn service tlv
bgpd already supports BGP Prefix-SID path attribute and there are some sub-types of Prefix-SID path attribute. This commits makes bgpd to support additional sub-types. sub-Type-4 and sub-Type-5 for construct the VPNv4 SRv6 backend with vpnv4-unicast address family. This path attributes is already supported by Ciscos IOS-XR and NX-OS. Prefix-SID sub-Type-4 and sub-Type-5 is defined on following IETF-drafts. Supports(A-part-of): - https://tools.ietf.org/html/draft-dawra-idr-srv6-vpn-04 - https://tools.ietf.org/html/draft-dawra-idr-srv6-vpn-05 Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| /* | ||
| * SRv6 definitions | ||
| * Copyright (C) 2020 Hiroki Shirokura, LINE Corporation | ||
| * | ||
| * 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; see the file COPYING; if not, write to the Free Software | ||
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | ||
| */ | ||
|
|
||
| #include "srv6.h" | ||
| #include "log.h" | ||
|
|
||
| const char *seg6local_action2str(uint32_t action) | ||
| { | ||
| switch (action) { | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END: | ||
| return "End"; | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_X: | ||
| return "End.X"; | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_T: | ||
| return "End.T"; | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_DX2: | ||
| return "End.DX2"; | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_DX6: | ||
| return "End.DX6"; | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_DX4: | ||
| return "End.DX4"; | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_DT6: | ||
| return "End.DT6"; | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_DT4: | ||
| return "End.DT4"; | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_B6: | ||
| return "End.B6"; | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_B6_ENCAP: | ||
| return "End.B6.Encap"; | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_BM: | ||
| return "End.BM"; | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_S: | ||
| return "End.S"; | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_AS: | ||
| return "End.AS"; | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_AM: | ||
| return "End.AM"; | ||
| case ZEBRA_SEG6_LOCAL_ACTION_UNSPEC: | ||
| return "unspec"; | ||
| default: | ||
| return "unknown"; | ||
| } | ||
| } | ||
|
|
||
| int snprintf_seg6_segs(char *str, | ||
| size_t size, const struct seg6_segs *segs) | ||
| { | ||
| str[0] = '\0'; | ||
| for (size_t i = 0; i < segs->num_segs; i++) { | ||
| char addr[INET6_ADDRSTRLEN]; | ||
| bool not_last = (i + 1) < segs->num_segs; | ||
|
|
||
| inet_ntop(AF_INET6, &segs->segs[i], addr, sizeof(addr)); | ||
| strlcat(str, addr, size); | ||
| strlcat(str, not_last ? "," : "", size); | ||
| } | ||
| return strlen(str); | ||
| } | ||
|
|
||
| const char *seg6local_context2str(char *str, size_t size, | ||
| struct seg6local_context *ctx, uint32_t action) | ||
| { | ||
| char b0[128]; | ||
|
|
||
| switch (action) { | ||
|
|
||
| case ZEBRA_SEG6_LOCAL_ACTION_END: | ||
| snprintf(str, size, "USP"); | ||
| return str; | ||
|
|
||
| case ZEBRA_SEG6_LOCAL_ACTION_END_X: | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_DX6: | ||
| inet_ntop(AF_INET6, &ctx->nh6, b0, 128); | ||
| snprintf(str, size, "nh6 %s", b0); | ||
| return str; | ||
|
|
||
| case ZEBRA_SEG6_LOCAL_ACTION_END_DX4: | ||
| inet_ntop(AF_INET, &ctx->nh4, b0, 128); | ||
| snprintf(str, size, "nh4 %s", b0); | ||
| return str; | ||
|
|
||
| case ZEBRA_SEG6_LOCAL_ACTION_END_T: | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_DT6: | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_DT4: | ||
| snprintf(str, size, "table %u", ctx->table); | ||
| return str; | ||
|
|
||
| case ZEBRA_SEG6_LOCAL_ACTION_END_DX2: | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_B6: | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_B6_ENCAP: | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_BM: | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_S: | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_AS: | ||
| case ZEBRA_SEG6_LOCAL_ACTION_END_AM: | ||
| case ZEBRA_SEG6_LOCAL_ACTION_UNSPEC: | ||
| default: | ||
| snprintf(str, size, "unknown(%s)", __func__); | ||
| return str; | ||
| } | ||
| } |
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