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https://github.com/FRRouting/frr.git
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Merge pull request #18605 from pguibert6WIND/sharp_usid
Add sharp support for seg6local routes with uSID flavor
This commit is contained in:
Russ White
GitHub
commit
5398e01dca
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@ -198,14 +198,24 @@ keyword. At present, no sharp commands will be preserved in the config.
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router# sharp install seg6local-routes 1::4 nexthop-seg6local dum0 End_DX4 10.0.0.1 1
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router# sharp install seg6local-routes 1::5 nexthop-seg6local dum0 End_DT6 10 1
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router# sharp install seg6local-routes 1::6 nexthop-seg6local dum0 End_DT46 10 1
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router# sharp install seg6local-routes 1::7 nexthop-seg6local dum0 uN 1
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router# sharp install seg6local-routes 1::8 nexthop-seg6local dum0 uA 2001::1 1
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router# sharp install seg6local-routes 1::9 nexthop-seg6local dum0 uN usid-block-length 40 usid-function-length 8 1
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router# sharp install seg6local-routes 1::10 nexthop-seg6local dum0 uA 2001::1 usid-block-length 40 usid-function-length 8 1
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router# sharp install seg6local-routes 1::11 nexthop-seg6local dum0 End_B6_Encap nexthop-seg6 2001::5 encap 2001:a::b:c 2001:a::d:e 1
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router# show ipv6 route
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D>* 1::1/128 [150/0] is directly connected, dum0, seg6local End USP, weight 1, 00:00:05
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D>* 1::1/128 [150/0] is directly connected, dum0, seg6local End -, weight 1, 00:00:05
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D>* 1::2/128 [150/0] is directly connected, dum0, seg6local End.X nh6 2001::1, weight 1, 00:00:05
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D>* 1::3/128 [150/0] is directly connected, dum0, seg6local End.T table 10, weight 1, 00:00:05
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D>* 1::4/128 [150/0] is directly connected, dum0, seg6local End.DX4 nh4 10.0.0.1, weight 1, 00:00:05
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D>* 1::5/128 [150/0] is directly connected, dum0, seg6local End.DT6 table 10, weight 1, 00:00:05
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D>* 1::6/128 [150/0] is directly connected, dum0, seg6local End.DT46 table 10, weight 1, 00:00:05
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D>* 1::7/128 [150/0] is directly connected, dum0, seg6local End -, weight 1, 00:00:05
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D>* 1::8/128 [150/0] is directly connected, dum0, seg6local End.X nh6 2001::1, weight 1, 00:01:17
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D>* 1::9/128 [150/0] is directly connected, dum0, seg6local End -, weight 1, 00:00:12
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D>* 1::10/128 [150/0] is directly connected, dum0, seg6local End.X nh6 2001::1, weight 1, 00:00:05
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D>* 1::11/128 [150/0] is directly connected, dum0, seg6local End.B6.Encap nh6 2001::5, seg6 2001:a::b:c,2001:a::d:e, weight 1, 00:00:04
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bash# ip -6 route
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1::1 encap seg6local action End dev dum0 proto 194 metric 20 pref medium
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@ -214,6 +224,12 @@ keyword. At present, no sharp commands will be preserved in the config.
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1::4 encap seg6local action End.DX4 nh4 10.0.0.1 dev dum0 proto 194 metric 20 pref medium
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1::5 encap seg6local action End.DT6 table 10 dev dum0 proto 194 metric 20 pref medium
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1::6 encap seg6local action End.DT46 table 10 dev dum0 proto 194 metric 20 pref medium
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1::7 encap seg6local action End flavors next-csid lblen 32 nflen 16 dev dum0 proto 194 metric 20 pref medium
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1::8 encap seg6local action End.X nh6 2001::1 flavors next-csid lblen 32 nflen 16 dev dum0 proto 194 metric 20 pref medium
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1::9 encap seg6local action End flavors next-csid lblen 40 nflen 8 dev dum0 proto 194 metric 20 pref medium
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1::10 encap seg6local action End.X nh6 2001::1 flavors next-csid lblen 40 nflen 8 dev dum0 proto 194 metric 20 pref medium
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1::11 encap seg6local action End.B6.Encaps segs 2 [ 2001:a::b:c 2001:a::d:e ] via 2001::5 dev dum0 proto 194 metric 20 pref medium
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.. clicmd:: show sharp segment-routing srv6
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@ -439,19 +439,125 @@ DEFPY (install_seg6_routes,
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return CMD_SUCCESS;
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}
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DEFPY(install_seg6local_segs_routes, install_seg6local_segs_routes_cmd,
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"sharp install seg6local-routes [vrf NAME$vrf_name]\
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X:X::X:X$start6\
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nexthop-seg6local NAME$seg6l_oif\
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<End_B6_Encap$end_b6_encap|uB6_Encap$ub6_encap>\
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nexthop-seg6 X:X::X:X$seg6_nh6\
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encap X:X::X:X$seg6_seg1 X:X::X:X$seg6_seg2\
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[usid-block-length (1-128)$lcblen] [usid-function-length (1-128)$lcfunclen] \
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(1-1000000)$routes [repeat (2-1000)$rpt]",
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"Sharp routing Protocol\n"
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"install some routes\n"
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"Routes to install\n"
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"The vrf we would like to install into if non-default\n"
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"The NAME of the vrf\n"
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"v6 Address to start /32 generation at\n"
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"Nexthop-seg6local to use\n"
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"Output device to use\n"
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"SRv6 End.B6.Encap function to use\n"
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"SRv6 uB6.Encap function to use\n"
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"Nexthop-seg6 to use\n"
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"V6 Nexthop address to use\n"
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"Encap mode\n"
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"Segment List, 1st SID to use\n"
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"Segment List, 2nd SID to use\n"
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"uSID locator block length\n"
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"Value in bits\n"
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"uSID node Function length\n"
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"Value in bits\n"
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"How many to create\n"
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"Should we repeat this command\n"
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"How many times to repeat this command\n")
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{
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struct vrf *vrf;
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uint32_t route_flags = 0;
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struct seg6local_context ctx = {};
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enum seg6local_action_t action;
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struct in6_addr seg_list[2];
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struct in6_addr *p_seg_list = &seg_list[0];
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sg.r.total_routes = routes;
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sg.r.installed_routes = 0;
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if (rpt >= 2)
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sg.r.repeat = rpt * 2;
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else
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sg.r.repeat = 0;
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memset(&sg.r.orig_prefix, 0, sizeof(sg.r.orig_prefix));
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nexthop_del_srv6_seg6local(&sg.r.nhop);
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nexthop_del_srv6_seg6(&sg.r.nhop);
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memset(&sg.r.nhop, 0, sizeof(sg.r.nhop));
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memset(&sg.r.nhop_group, 0, sizeof(sg.r.nhop_group));
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memset(&sg.r.backup_nhop, 0, sizeof(sg.r.nhop));
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memset(&sg.r.backup_nhop_group, 0, sizeof(sg.r.nhop_group));
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sg.r.opaque[0] = '\0';
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sg.r.inst = 0;
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sg.r.orig_prefix.family = AF_INET6;
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sg.r.orig_prefix.prefixlen = 128;
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sg.r.orig_prefix.u.prefix6 = start6;
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if (!vrf_name)
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vrf_name = VRF_DEFAULT_NAME;
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vrf = vrf_lookup_by_name(vrf_name);
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if (!vrf) {
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vty_out(vty, "The vrf NAME specified: %s does not exist\n", vrf_name);
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return CMD_WARNING;
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}
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ctx.nh6 = seg6_nh6;
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action = ZEBRA_SEG6_LOCAL_ACTION_END_B6_ENCAP;
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if (ub6_encap) {
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SET_SRV6_FLV_OP(ctx.flv.flv_ops, ZEBRA_SEG6_LOCAL_FLV_OP_NEXT_CSID);
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if (lcblen)
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ctx.flv.lcblock_len = lcblen;
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if (lcfunclen)
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ctx.flv.lcnode_func_len = lcfunclen;
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}
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sg.r.nhop.type = NEXTHOP_TYPE_IPV6_IFINDEX;
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sg.r.nhop.gate.ipv6 = seg6_nh6;
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sg.r.nhop.ifindex = ifname2ifindex(seg6l_oif, vrf->vrf_id);
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sg.r.nhop.vrf_id = vrf->vrf_id;
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sg.r.nhop_group.nexthop = &sg.r.nhop;
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nexthop_add_srv6_seg6local(&sg.r.nhop, action, &ctx);
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sg.r.nhop_group.nexthop = &sg.r.nhop;
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seg_list[0] = seg6_seg1;
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seg_list[1] = seg6_seg2;
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nexthop_add_srv6_seg6(&sg.r.nhop, p_seg_list, 2);
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sg.r.vrf_id = vrf->vrf_id;
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sharp_install_routes_helper(&sg.r.orig_prefix, sg.r.vrf_id, sg.r.inst, 0, &sg.r.nhop_group,
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&sg.r.backup_nhop_group, routes, route_flags, sg.r.opaque);
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return CMD_SUCCESS;
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}
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DEFPY (install_seg6local_routes,
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install_seg6local_routes_cmd,
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"sharp install seg6local-routes [vrf NAME$vrf_name]\
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X:X::X:X$start6\
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nexthop-seg6local NAME$seg6l_oif\
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<End$seg6l_end|\
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uN$seg6l_micro_end|\
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End_X$seg6l_endx X:X::X:X$seg6l_endx_nh6|\
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uA$seg6l_micro_endx X:X::X:X$seg6l_micro_endx_nh6|\
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End_T$seg6l_endt (1-4294967295)$seg6l_endt_table|\
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uDT$seg6l_micro_endt (1-4294967295)$seg6l_micro_endt_table|\
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End_DX4$seg6l_enddx4 A.B.C.D$seg6l_enddx4_nh4|\
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uDX4$seg6l_micro_enddx4 A.B.C.D$seg6l_micro_enddx4_nh4|\
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End_DX6$seg6l_enddx6 X:X::X:X$seg6l_enddx6_nh6|\
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uDX6$seg6l_micro_enddx6 X:X::X:X$seg6l_micro_enddx6_nh6|\
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End_DT6$seg6l_enddt6 (1-4294967295)$seg6l_enddt6_table|\
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uDT6$seg6l_micro_enddt6 (1-4294967295)$seg6l_micro_enddt6_table|\
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End_DT4$seg6l_enddt4 (1-4294967295)$seg6l_enddt4_table|\
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End_DT46$seg6l_enddt46 (1-4294967295)$seg6l_enddt46_table>\
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uDT4$seg6l_micro_enddt4 (1-4294967295)$seg6l_micro_enddt4_table|\
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End_DT46$seg6l_enddt46 (1-4294967295)$seg6l_enddt46_table|\
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uDT46$seg6l_micro_enddt46 (1-4294967295)$seg6l_micro_enddt46_table>\
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[usid-block-length (1-128)$lcblen] [usid-function-length (1-128)$lcfunclen] \
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(1-1000000)$routes [repeat (2-1000)$rpt]",
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"Sharp routing Protocol\n"
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"install some routes\n"
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@ -462,20 +568,39 @@ DEFPY (install_seg6local_routes,
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"Nexthop-seg6local to use\n"
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"Output device to use\n"
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"SRv6 End function to use\n"
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"SRv6 uN function to use\n"
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"SRv6 End.X function to use\n"
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"V6 Nexthop address to use\n"
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"SRv6 uA function to use\n"
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"V6 Nexthop address to use\n"
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"SRv6 End.T function to use\n"
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"Redirect table id to use\n"
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"SRv6 uDT function to use\n"
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"Redirect table id to use\n"
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"SRv6 End.DX4 function to use\n"
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"V4 Nexthop address to use\n"
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"SRv6 uDX4 function to use\n"
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"V4 Nexthop address to use\n"
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"SRv6 End.DX6 function to use\n"
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"V6 Nexthop address to use\n"
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"SRv6 uDX6 function to use\n"
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"V6 Nexthop address to use\n"
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"SRv6 End.DT6 function to use\n"
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"Redirect table id to use\n"
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"SRv6 uDT6 function to use\n"
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"Redirect table id to use\n"
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"SRv6 End.DT4 function to use\n"
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"Redirect table id to use\n"
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"SRv6 uDT4 function to use\n"
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"Redirect table id to use\n"
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"SRv6 End.DT46 function to use\n"
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"Redirect table id to use\n"
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"SRv6 uDT46 function to use\n"
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"Redirect table id to use\n"
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"uSID locator block length\n"
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"Value in bits\n"
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"uSID node Function length\n"
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"Value in bits\n"
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"How many to create\n"
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"Should we repeat this command\n"
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"How many times to repeat this command\n")
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@ -519,28 +644,64 @@ DEFPY (install_seg6local_routes,
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if (seg6l_enddx4) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END_DX4;
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ctx.nh4 = seg6l_enddx4_nh4;
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} else if (seg6l_micro_enddx4) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END_DX4;
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ctx.nh4 = seg6l_micro_enddx4_nh4;
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SET_SRV6_FLV_OP(ctx.flv.flv_ops, ZEBRA_SEG6_LOCAL_FLV_OP_NEXT_CSID);
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} else if (seg6l_enddx6) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END_DX6;
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ctx.nh6 = seg6l_enddx6_nh6;
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} else if (seg6l_micro_enddx6) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END_DX6;
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ctx.nh6 = seg6l_enddx6_nh6;
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SET_SRV6_FLV_OP(ctx.flv.flv_ops, ZEBRA_SEG6_LOCAL_FLV_OP_NEXT_CSID);
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} else if (seg6l_endx) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END_X;
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ctx.nh6 = seg6l_endx_nh6;
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} else if (seg6l_micro_endx) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END_X;
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ctx.nh6 = seg6l_micro_endx_nh6;
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SET_SRV6_FLV_OP(ctx.flv.flv_ops, ZEBRA_SEG6_LOCAL_FLV_OP_NEXT_CSID);
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} else if (seg6l_endt) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END_T;
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ctx.table = seg6l_endt_table;
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} else if (seg6l_micro_endt) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END_T;
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ctx.table = seg6l_micro_endt_table;
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SET_SRV6_FLV_OP(ctx.flv.flv_ops, ZEBRA_SEG6_LOCAL_FLV_OP_NEXT_CSID);
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} else if (seg6l_enddt6) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END_DT6;
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ctx.table = seg6l_enddt6_table;
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} else if (seg6l_micro_enddt6) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END_DT6;
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ctx.table = seg6l_micro_enddt6_table;
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SET_SRV6_FLV_OP(ctx.flv.flv_ops, ZEBRA_SEG6_LOCAL_FLV_OP_NEXT_CSID);
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} else if (seg6l_enddt4) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END_DT4;
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ctx.table = seg6l_enddt4_table;
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} else if (seg6l_micro_enddt4) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END_DT4;
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ctx.table = seg6l_micro_enddt4_table;
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SET_SRV6_FLV_OP(ctx.flv.flv_ops, ZEBRA_SEG6_LOCAL_FLV_OP_NEXT_CSID);
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} else if (seg6l_enddt46) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END_DT46;
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ctx.table = seg6l_enddt46_table;
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} else {
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} else if (seg6l_micro_enddt46) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END_DT46;
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ctx.table = seg6l_micro_enddt46_table;
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SET_SRV6_FLV_OP(ctx.flv.flv_ops, ZEBRA_SEG6_LOCAL_FLV_OP_NEXT_CSID);
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} else if (seg6l_micro_end) {
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action = ZEBRA_SEG6_LOCAL_ACTION_END;
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SET_SRV6_FLV_OP(ctx.flv.flv_ops, ZEBRA_SEG6_LOCAL_FLV_OP_NEXT_CSID);
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} else
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action = ZEBRA_SEG6_LOCAL_ACTION_END;
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}
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if (CHECK_SRV6_FLV_OP(ctx.flv.flv_ops, ZEBRA_SEG6_LOCAL_FLV_OP_NEXT_CSID)) {
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if (lcblen)
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ctx.flv.lcblock_len = lcblen;
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if (lcfunclen)
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ctx.flv.lcnode_func_len = lcfunclen;
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}
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sg.r.nhop.type = NEXTHOP_TYPE_IFINDEX;
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sg.r.nhop.ifindex = ifname2ifindex(seg6l_oif, vrf->vrf_id);
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sg.r.nhop.vrf_id = vrf->vrf_id;
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@ -1491,6 +1652,7 @@ void sharp_vty_init(void)
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install_element(ENABLE_NODE, &install_routes_cmd);
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install_element(ENABLE_NODE, &install_seg6_routes_cmd);
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install_element(ENABLE_NODE, &install_seg6local_routes_cmd);
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install_element(ENABLE_NODE, &install_seg6local_segs_routes_cmd);
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install_element(ENABLE_NODE, &remove_routes_cmd);
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install_element(ENABLE_NODE, &vrf_label_cmd);
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install_element(ENABLE_NODE, &sharp_nht_data_dump_cmd);
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@ -94,6 +94,12 @@ struct gw_family_t {
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union g_addr gate;
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};
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struct buf_req {
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struct nlmsghdr n;
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struct nhmsg nhm;
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char buf[];
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};
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static const char ipv4_ll_buf[16] = "169.254.0.1";
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static struct in_addr ipv4_ll;
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@ -2936,6 +2942,54 @@ static bool _netlink_nexthop_build_group(struct nlmsghdr *n, size_t req_size, ui
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return true;
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}
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static ssize_t fill_srh_end_b6_encaps(char *buffer, size_t buflen, struct seg6_seg_stack *segs)
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{
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struct ipv6_sr_hdr *srh;
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size_t srhlen;
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int i;
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if (!segs || segs->num_segs > SRV6_MAX_SEGS) {
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/* Exceeding maximum supported SIDs */
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return -1;
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}
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srhlen = SRH_BASE_HEADER_LENGTH + SRH_SEGMENT_LENGTH * segs->num_segs;
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if (buflen < srhlen)
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return -1;
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memset(buffer, 0, buflen);
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srh = (struct ipv6_sr_hdr *)buffer;
|
||||
srh->hdrlen = (srhlen >> 3) - 1;
|
||||
srh->type = 4;
|
||||
srh->segments_left = segs->num_segs - 1;
|
||||
srh->first_segment = segs->num_segs - 1;
|
||||
|
||||
for (i = 0; i < segs->num_segs; i++) {
|
||||
memcpy(&srh->segments[segs->num_segs - i - 1], &segs->seg[i],
|
||||
sizeof(struct in6_addr));
|
||||
}
|
||||
|
||||
return srhlen;
|
||||
}
|
||||
|
||||
static int netlink_nexthop_msg_encode_end_b6_encaps(struct buf_req *req, const struct nexthop *nh,
|
||||
size_t buflen)
|
||||
{
|
||||
int srh_len;
|
||||
char srh_buf[4096];
|
||||
|
||||
if (!nl_attr_put32(&req->n, buflen, SEG6_LOCAL_ACTION, SEG6_LOCAL_ACTION_END_B6_ENCAP))
|
||||
return 0;
|
||||
srh_len = fill_srh_end_b6_encaps(srh_buf, sizeof(srh_buf), nh->nh_srv6->seg6_segs);
|
||||
if (srh_len < 0)
|
||||
return 0;
|
||||
if (!nl_attr_put(&req->n, buflen, SEG6_LOCAL_SRH, srh_buf, srh_len))
|
||||
return 0;
|
||||
return 1;
|
||||
}
|
||||
|
||||
/**
|
||||
* Next hop packet encoding helper function.
|
||||
*
|
||||
|
|
@ -3248,6 +3302,12 @@ ssize_t netlink_nexthop_msg_encode(uint16_t cmd,
|
|||
ctx6->table))
|
||||
return 0;
|
||||
break;
|
||||
case ZEBRA_SEG6_LOCAL_ACTION_END_B6_ENCAP:
|
||||
netlink_nexthop_msg_encode_end_b6_encaps((struct buf_req
|
||||
*)
|
||||
req,
|
||||
nh, buflen);
|
||||
break;
|
||||
default:
|
||||
zlog_err("%s: unsupport seg6local behaviour action=%u",
|
||||
__func__, action);
|
||||
|
|
@ -3261,9 +3321,9 @@ ssize_t netlink_nexthop_msg_encode(uint16_t cmd,
|
|||
nl_attr_nest_end(&req->n, nest);
|
||||
}
|
||||
|
||||
if (nh->nh_srv6->seg6_segs &&
|
||||
nh->nh_srv6->seg6_segs->num_segs &&
|
||||
!sid_zero(nh->nh_srv6->seg6_segs)) {
|
||||
if (nh->nh_srv6->seg6_segs && nh->nh_srv6->seg6_segs->num_segs &&
|
||||
!sid_zero(nh->nh_srv6->seg6_segs) &&
|
||||
nh->nh_srv6->seg6local_action == ZEBRA_SEG6_LOCAL_ACTION_UNSPEC) {
|
||||
char tun_buf[4096];
|
||||
ssize_t tun_len;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue