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Diffstat (limited to '')
| -rw-r--r-- | ip/iproute_lwtunnel.c | 2281 |
1 files changed, 2281 insertions, 0 deletions
diff --git a/ip/iproute_lwtunnel.c b/ip/iproute_lwtunnel.c new file mode 100644 index 0000000..bf4468b --- /dev/null +++ b/ip/iproute_lwtunnel.c @@ -0,0 +1,2281 @@ +/* + * iproute_lwtunnel.c + * + * 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. + * + * Authors: Roopa Prabhu, <roopa@cumulusnetworks.com> + * Thomas Graf <tgraf@suug.ch> + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <string.h> +#include <linux/ila.h> +#include <linux/lwtunnel.h> +#include <linux/mpls_iptunnel.h> +#include <errno.h> + +#include "rt_names.h" +#include "bpf_util.h" +#include "utils.h" +#include "ip_common.h" +#include "ila_common.h" + +#include <linux/seg6.h> +#include <linux/seg6_iptunnel.h> +#include <linux/rpl.h> +#include <linux/rpl_iptunnel.h> +#include <linux/seg6_hmac.h> +#include <linux/seg6_local.h> +#include <linux/if_tunnel.h> +#include <linux/ioam6.h> +#include <linux/ioam6_iptunnel.h> + +static const char *format_encap_type(int type) +{ + switch (type) { + case LWTUNNEL_ENCAP_MPLS: + return "mpls"; + case LWTUNNEL_ENCAP_IP: + return "ip"; + case LWTUNNEL_ENCAP_IP6: + return "ip6"; + case LWTUNNEL_ENCAP_ILA: + return "ila"; + case LWTUNNEL_ENCAP_BPF: + return "bpf"; + case LWTUNNEL_ENCAP_SEG6: + return "seg6"; + case LWTUNNEL_ENCAP_SEG6_LOCAL: + return "seg6local"; + case LWTUNNEL_ENCAP_RPL: + return "rpl"; + case LWTUNNEL_ENCAP_IOAM6: + return "ioam6"; + case LWTUNNEL_ENCAP_XFRM: + return "xfrm"; + default: + return "unknown"; + } +} + +static void encap_type_usage(void) +{ + int i; + + fprintf(stderr, "Usage: ip route ... encap TYPE [ OPTIONS ] [...]\n"); + + for (i = 1; i <= LWTUNNEL_ENCAP_MAX; i++) + fprintf(stderr, "%s %s\n", format_encap_type(i), + i == 1 ? "TYPE := " : " "); + + exit(-1); +} + +static int read_encap_type(const char *name) +{ + if (strcmp(name, "mpls") == 0) + return LWTUNNEL_ENCAP_MPLS; + else if (strcmp(name, "ip") == 0) + return LWTUNNEL_ENCAP_IP; + else if (strcmp(name, "ip6") == 0) + return LWTUNNEL_ENCAP_IP6; + else if (strcmp(name, "ila") == 0) + return LWTUNNEL_ENCAP_ILA; + else if (strcmp(name, "bpf") == 0) + return LWTUNNEL_ENCAP_BPF; + else if (strcmp(name, "seg6") == 0) + return LWTUNNEL_ENCAP_SEG6; + else if (strcmp(name, "seg6local") == 0) + return LWTUNNEL_ENCAP_SEG6_LOCAL; + else if (strcmp(name, "rpl") == 0) + return LWTUNNEL_ENCAP_RPL; + else if (strcmp(name, "ioam6") == 0) + return LWTUNNEL_ENCAP_IOAM6; + else if (strcmp(name, "xfrm") == 0) + return LWTUNNEL_ENCAP_XFRM; + else if (strcmp(name, "help") == 0) + encap_type_usage(); + + return LWTUNNEL_ENCAP_NONE; +} + +static void print_srh(FILE *fp, struct ipv6_sr_hdr *srh) +{ + int i; + + if (is_json_context()) + open_json_array(PRINT_JSON, "segs"); + else + fprintf(fp, "segs %d [ ", srh->first_segment + 1); + + for (i = srh->first_segment; i >= 0; i--) + print_color_string(PRINT_ANY, COLOR_INET6, + NULL, "%s ", + rt_addr_n2a(AF_INET6, 16, &srh->segments[i])); + + if (is_json_context()) + close_json_array(PRINT_JSON, NULL); + else + fprintf(fp, "] "); + + if (sr_has_hmac(srh)) { + unsigned int offset = ((srh->hdrlen + 1) << 3) - 40; + struct sr6_tlv_hmac *tlv; + + tlv = (struct sr6_tlv_hmac *)((char *)srh + offset); + print_0xhex(PRINT_ANY, "hmac", + "hmac %llX ", ntohl(tlv->hmackeyid)); + } +} + +static const char *seg6_mode_types[] = { + [SEG6_IPTUN_MODE_INLINE] = "inline", + [SEG6_IPTUN_MODE_ENCAP] = "encap", + [SEG6_IPTUN_MODE_L2ENCAP] = "l2encap", + [SEG6_IPTUN_MODE_ENCAP_RED] = "encap.red", + [SEG6_IPTUN_MODE_L2ENCAP_RED] = "l2encap.red", +}; + +static const char *format_seg6mode_type(int mode) +{ + if (mode < 0 || mode > ARRAY_SIZE(seg6_mode_types)) + return "<unknown>"; + + return seg6_mode_types[mode]; +} + +static int read_seg6mode_type(const char *mode) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(seg6_mode_types); i++) { + if (strcmp(mode, seg6_mode_types[i]) == 0) + return i; + } + + return -1; +} + +static const char *seg6_flavor_names[SEG6_LOCAL_FLV_OP_MAX + 1] = { + [SEG6_LOCAL_FLV_OP_PSP] = "psp", + [SEG6_LOCAL_FLV_OP_USP] = "usp", + [SEG6_LOCAL_FLV_OP_USD] = "usd", + [SEG6_LOCAL_FLV_OP_NEXT_CSID] = "next-csid" +}; + +static int read_seg6_local_flv_type(const char *name) +{ + int i; + + for (i = 1; i < SEG6_LOCAL_FLV_OP_MAX + 1; ++i) { + if (!seg6_flavor_names[i]) + continue; + + if (strcasecmp(seg6_flavor_names[i], name) == 0) + return i; + } + + return -1; +} + +static int parse_seg6local_flavors(const char *buf, __u32 *flv_mask) +{ + unsigned char flavor_ok[SEG6_LOCAL_FLV_OP_MAX + 1] = { 0, }; + char *wbuf; + __u32 mask = 0; + int index; + char *s; + + /* strtok changes first parameter, so we need to make a local copy */ + wbuf = strdupa(buf); + + if (strlen(wbuf) == 0) + return -1; + + for (s = strtok(wbuf, ","); s; s = strtok(NULL, ",")) { + index = read_seg6_local_flv_type(s); + if (index < 0 || index > SEG6_LOCAL_FLV_OP_MAX) + return -1; + /* we check for duplicates */ + if (flavor_ok[index]++) + return -1; + + mask |= (1 << index); + } + + *flv_mask = mask; + return 0; +} + +static void print_flavors(FILE *fp, __u32 flavors) +{ + int i, fnumber = 0; + char *flv_name; + + if (is_json_context()) + open_json_array(PRINT_JSON, "flavors"); + else + print_string(PRINT_FP, NULL, "flavors ", NULL); + + for (i = 0; i < SEG6_LOCAL_FLV_OP_MAX + 1; ++i) { + if (flavors & (1 << i)) { + flv_name = (char *) seg6_flavor_names[i]; + if (!flv_name) + continue; + + if (is_json_context()) + print_string(PRINT_JSON, NULL, NULL, flv_name); + else { + if (fnumber++ == 0) + print_string(PRINT_FP, NULL, "%s", flv_name); + else + print_string(PRINT_FP, NULL, ",%s", flv_name); + } + } + } + + if (is_json_context()) + close_json_array(PRINT_JSON, NULL); + else + print_string(PRINT_FP, NULL, " ", NULL); +} + +static void print_flavors_attr(FILE *fp, const char *key, __u32 value) +{ + if (is_json_context()) { + print_u64(PRINT_JSON, key, NULL, value); + } else { + print_string(PRINT_FP, NULL, "%s ", key); + print_num(fp, 1, value); + } +} + +static void print_encap_seg6(FILE *fp, struct rtattr *encap) +{ + struct rtattr *tb[SEG6_IPTUNNEL_MAX+1]; + struct seg6_iptunnel_encap *tuninfo; + + parse_rtattr_nested(tb, SEG6_IPTUNNEL_MAX, encap); + + if (!tb[SEG6_IPTUNNEL_SRH]) + return; + + tuninfo = RTA_DATA(tb[SEG6_IPTUNNEL_SRH]); + print_string(PRINT_ANY, "mode", + "mode %s ", format_seg6mode_type(tuninfo->mode)); + + print_srh(fp, tuninfo->srh); +} + +static void print_rpl_srh(FILE *fp, struct ipv6_rpl_sr_hdr *srh) +{ + int i; + + if (is_json_context()) + open_json_array(PRINT_JSON, "segs"); + else + fprintf(fp, "segs %d [ ", srh->segments_left); + + for (i = srh->segments_left - 1; i >= 0; i--) { + print_color_string(PRINT_ANY, COLOR_INET6, + NULL, "%s ", + rt_addr_n2a(AF_INET6, 16, &srh->rpl_segaddr[i])); + } + + if (is_json_context()) + close_json_array(PRINT_JSON, NULL); + else + fprintf(fp, "] "); +} + +static void print_encap_rpl(FILE *fp, struct rtattr *encap) +{ + struct rtattr *tb[RPL_IPTUNNEL_MAX + 1]; + struct ipv6_rpl_sr_hdr *srh; + + parse_rtattr_nested(tb, RPL_IPTUNNEL_MAX, encap); + + if (!tb[RPL_IPTUNNEL_SRH]) + return; + + srh = RTA_DATA(tb[RPL_IPTUNNEL_SRH]); + + print_rpl_srh(fp, srh); +} + +static const char *ioam6_mode_types[IOAM6_IPTUNNEL_MODE_MAX + 1] = { + [IOAM6_IPTUNNEL_MODE_INLINE] = "inline", + [IOAM6_IPTUNNEL_MODE_ENCAP] = "encap", + [IOAM6_IPTUNNEL_MODE_AUTO] = "auto", +}; + +static const char *format_ioam6mode_type(int mode) +{ + if (mode < IOAM6_IPTUNNEL_MODE_MIN || + mode > IOAM6_IPTUNNEL_MODE_MAX || + !ioam6_mode_types[mode]) + return "<unknown>"; + + return ioam6_mode_types[mode]; +} + +static __u8 read_ioam6mode_type(const char *mode) +{ + __u8 i; + + for (i = IOAM6_IPTUNNEL_MODE_MIN; i <= IOAM6_IPTUNNEL_MODE_MAX; i++) { + if (ioam6_mode_types[i] && !strcmp(mode, ioam6_mode_types[i])) + return i; + } + + return 0; +} + +static void print_encap_ioam6(FILE *fp, struct rtattr *encap) +{ + struct rtattr *tb[IOAM6_IPTUNNEL_MAX + 1]; + struct ioam6_trace_hdr *trace; + __u32 freq_k, freq_n; + __u8 mode; + + parse_rtattr_nested(tb, IOAM6_IPTUNNEL_MAX, encap); + if (!tb[IOAM6_IPTUNNEL_MODE] || !tb[IOAM6_IPTUNNEL_TRACE] || + !tb[IOAM6_IPTUNNEL_FREQ_K] || !tb[IOAM6_IPTUNNEL_FREQ_N]) + return; + + freq_k = rta_getattr_u32(tb[IOAM6_IPTUNNEL_FREQ_K]); + freq_n = rta_getattr_u32(tb[IOAM6_IPTUNNEL_FREQ_N]); + + print_uint(PRINT_ANY, "freqk", "freq %u", freq_k); + print_uint(PRINT_ANY, "freqn", "/%u ", freq_n); + + mode = rta_getattr_u8(tb[IOAM6_IPTUNNEL_MODE]); + if (!tb[IOAM6_IPTUNNEL_DST] && mode != IOAM6_IPTUNNEL_MODE_INLINE) + return; + + print_string(PRINT_ANY, "mode", "mode %s ", format_ioam6mode_type(mode)); + + if (mode != IOAM6_IPTUNNEL_MODE_INLINE) + print_string(PRINT_ANY, "tundst", "tundst %s ", + rt_addr_n2a_rta(AF_INET6, tb[IOAM6_IPTUNNEL_DST])); + + trace = RTA_DATA(tb[IOAM6_IPTUNNEL_TRACE]); + + print_null(PRINT_ANY, "trace", "trace ", NULL); + print_null(PRINT_ANY, "prealloc", "prealloc ", NULL); + print_hex(PRINT_ANY, "type", "type %#08x ", ntohl(trace->type_be32) >> 8); + print_uint(PRINT_ANY, "ns", "ns %u ", ntohs(trace->namespace_id)); + print_uint(PRINT_ANY, "size", "size %u ", trace->remlen * 4); +} + +static const char *seg6_action_names[SEG6_LOCAL_ACTION_MAX + 1] = { + [SEG6_LOCAL_ACTION_END] = "End", + [SEG6_LOCAL_ACTION_END_X] = "End.X", + [SEG6_LOCAL_ACTION_END_T] = "End.T", + [SEG6_LOCAL_ACTION_END_DX2] = "End.DX2", + [SEG6_LOCAL_ACTION_END_DX6] = "End.DX6", + [SEG6_LOCAL_ACTION_END_DX4] = "End.DX4", + [SEG6_LOCAL_ACTION_END_DT6] = "End.DT6", + [SEG6_LOCAL_ACTION_END_DT4] = "End.DT4", + [SEG6_LOCAL_ACTION_END_B6] = "End.B6", + [SEG6_LOCAL_ACTION_END_B6_ENCAP] = "End.B6.Encaps", + [SEG6_LOCAL_ACTION_END_BM] = "End.BM", + [SEG6_LOCAL_ACTION_END_S] = "End.S", + [SEG6_LOCAL_ACTION_END_AS] = "End.AS", + [SEG6_LOCAL_ACTION_END_AM] = "End.AM", + [SEG6_LOCAL_ACTION_END_BPF] = "End.BPF", + [SEG6_LOCAL_ACTION_END_DT46] = "End.DT46", +}; + +static const char *format_action_type(int action) +{ + if (action < 0 || action > SEG6_LOCAL_ACTION_MAX) + return "<invalid>"; + + return seg6_action_names[action] ?: "<unknown>"; +} + +static int read_action_type(const char *name) +{ + int i; + + for (i = 0; i < SEG6_LOCAL_ACTION_MAX + 1; i++) { + if (!seg6_action_names[i]) + continue; + + if (strcmp(seg6_action_names[i], name) == 0) + return i; + } + + return SEG6_LOCAL_ACTION_UNSPEC; +} + +static void print_encap_bpf_prog(FILE *fp, struct rtattr *encap, + const char *str) +{ + struct rtattr *tb[LWT_BPF_PROG_MAX+1]; + const char *progname = NULL; + + parse_rtattr_nested(tb, LWT_BPF_PROG_MAX, encap); + + if (tb[LWT_BPF_PROG_NAME]) + progname = rta_getattr_str(tb[LWT_BPF_PROG_NAME]); + + if (is_json_context()) + print_string(PRINT_JSON, str, NULL, + progname ? : "<unknown>"); + else { + fprintf(fp, "%s ", str); + if (progname) + fprintf(fp, "%s ", progname); + } +} + +static void print_seg6_local_counters(FILE *fp, struct rtattr *encap) +{ + struct rtattr *tb[SEG6_LOCAL_CNT_MAX + 1]; + __u64 packets = 0, bytes = 0, errors = 0; + + parse_rtattr_nested(tb, SEG6_LOCAL_CNT_MAX, encap); + + if (tb[SEG6_LOCAL_CNT_PACKETS]) + packets = rta_getattr_u64(tb[SEG6_LOCAL_CNT_PACKETS]); + + if (tb[SEG6_LOCAL_CNT_BYTES]) + bytes = rta_getattr_u64(tb[SEG6_LOCAL_CNT_BYTES]); + + if (tb[SEG6_LOCAL_CNT_ERRORS]) + errors = rta_getattr_u64(tb[SEG6_LOCAL_CNT_ERRORS]); + + if (is_json_context()) { + open_json_object("stats64"); + + print_u64(PRINT_JSON, "packets", NULL, packets); + print_u64(PRINT_JSON, "bytes", NULL, bytes); + print_u64(PRINT_JSON, "errors", NULL, errors); + + close_json_object(); + } else { + print_string(PRINT_FP, NULL, "%s ", "packets"); + print_num(fp, 1, packets); + + print_string(PRINT_FP, NULL, "%s ", "bytes"); + print_num(fp, 1, bytes); + + print_string(PRINT_FP, NULL, "%s ", "errors"); + print_num(fp, 1, errors); + } +} + +static void print_seg6_local_flavors(FILE *fp, struct rtattr *encap) +{ + struct rtattr *tb[SEG6_LOCAL_FLV_MAX + 1]; + __u8 lbl = 0, nfl = 0; + __u32 flavors = 0; + + parse_rtattr_nested(tb, SEG6_LOCAL_FLV_MAX, encap); + + if (tb[SEG6_LOCAL_FLV_OPERATION]) { + flavors = rta_getattr_u32(tb[SEG6_LOCAL_FLV_OPERATION]); + print_flavors(fp, flavors); + } + + if (tb[SEG6_LOCAL_FLV_LCBLOCK_BITS]) { + lbl = rta_getattr_u8(tb[SEG6_LOCAL_FLV_LCBLOCK_BITS]); + print_flavors_attr(fp, "lblen", lbl); + } + + if (tb[SEG6_LOCAL_FLV_LCNODE_FN_BITS]) { + nfl = rta_getattr_u8(tb[SEG6_LOCAL_FLV_LCNODE_FN_BITS]); + print_flavors_attr(fp, "nflen", nfl); + } +} + +static void print_encap_seg6local(FILE *fp, struct rtattr *encap) +{ + struct rtattr *tb[SEG6_LOCAL_MAX + 1]; + int action; + + SPRINT_BUF(b1); + + parse_rtattr_nested(tb, SEG6_LOCAL_MAX, encap); + + if (!tb[SEG6_LOCAL_ACTION]) + return; + + action = rta_getattr_u32(tb[SEG6_LOCAL_ACTION]); + + print_string(PRINT_ANY, "action", + "action %s ", format_action_type(action)); + + if (tb[SEG6_LOCAL_SRH]) { + open_json_object("srh"); + print_srh(fp, RTA_DATA(tb[SEG6_LOCAL_SRH])); + close_json_object(); + } + + if (tb[SEG6_LOCAL_TABLE]) + print_string(PRINT_ANY, "table", "table %s ", + rtnl_rttable_n2a(rta_getattr_u32(tb[SEG6_LOCAL_TABLE]), + b1, sizeof(b1))); + + if (tb[SEG6_LOCAL_VRFTABLE]) + print_string(PRINT_ANY, "vrftable", "vrftable %s ", + rtnl_rttable_n2a(rta_getattr_u32(tb[SEG6_LOCAL_VRFTABLE]), + b1, sizeof(b1))); + + if (tb[SEG6_LOCAL_NH4]) { + print_string(PRINT_ANY, "nh4", + "nh4 %s ", rt_addr_n2a_rta(AF_INET, tb[SEG6_LOCAL_NH4])); + } + + if (tb[SEG6_LOCAL_NH6]) { + print_string(PRINT_ANY, "nh6", + "nh6 %s ", rt_addr_n2a_rta(AF_INET6, tb[SEG6_LOCAL_NH6])); + } + + if (tb[SEG6_LOCAL_IIF]) { + int iif = rta_getattr_u32(tb[SEG6_LOCAL_IIF]); + + print_string(PRINT_ANY, "iif", + "iif %s ", ll_index_to_name(iif)); + } + + if (tb[SEG6_LOCAL_OIF]) { + int oif = rta_getattr_u32(tb[SEG6_LOCAL_OIF]); + + print_string(PRINT_ANY, "oif", + "oif %s ", ll_index_to_name(oif)); + } + + if (tb[SEG6_LOCAL_BPF]) + print_encap_bpf_prog(fp, tb[SEG6_LOCAL_BPF], "endpoint"); + + if (tb[SEG6_LOCAL_COUNTERS] && show_stats) + print_seg6_local_counters(fp, tb[SEG6_LOCAL_COUNTERS]); + + if (tb[SEG6_LOCAL_FLAVORS]) + print_seg6_local_flavors(fp, tb[SEG6_LOCAL_FLAVORS]); +} + +static void print_encap_mpls(FILE *fp, struct rtattr *encap) +{ + struct rtattr *tb[MPLS_IPTUNNEL_MAX+1]; + + parse_rtattr_nested(tb, MPLS_IPTUNNEL_MAX, encap); + + if (tb[MPLS_IPTUNNEL_DST]) + print_string(PRINT_ANY, "dst", " %s ", + format_host_rta(AF_MPLS, tb[MPLS_IPTUNNEL_DST])); + if (tb[MPLS_IPTUNNEL_TTL]) + print_uint(PRINT_ANY, "ttl", "ttl %u ", + rta_getattr_u8(tb[MPLS_IPTUNNEL_TTL])); +} + +static void lwtunnel_print_geneve_opts(struct rtattr *attr) +{ + struct rtattr *tb[LWTUNNEL_IP_OPT_GENEVE_MAX + 1]; + struct rtattr *i = RTA_DATA(attr); + int rem = RTA_PAYLOAD(attr); + char *name = "geneve_opts"; + int data_len, offset = 0; + char data[rem * 2 + 1]; + __u16 class; + __u8 type; + + print_nl(); + print_string(PRINT_FP, name, "\t%s ", name); + open_json_array(PRINT_JSON, name); + + while (rem) { + parse_rtattr(tb, LWTUNNEL_IP_OPT_GENEVE_MAX, i, rem); + class = rta_getattr_be16(tb[LWTUNNEL_IP_OPT_GENEVE_CLASS]); + type = rta_getattr_u8(tb[LWTUNNEL_IP_OPT_GENEVE_TYPE]); + data_len = RTA_PAYLOAD(tb[LWTUNNEL_IP_OPT_GENEVE_DATA]); + hexstring_n2a(RTA_DATA(tb[LWTUNNEL_IP_OPT_GENEVE_DATA]), + data_len, data, sizeof(data)); + offset += data_len + 20; + rem -= data_len + 20; + i = RTA_DATA(attr) + offset; + + open_json_object(NULL); + print_uint(PRINT_ANY, "class", "%u", class); + print_uint(PRINT_ANY, "type", ":%u", type); + if (rem) + print_string(PRINT_ANY, "data", ":%s,", data); + else + print_string(PRINT_ANY, "data", ":%s ", data); + close_json_object(); + } + + close_json_array(PRINT_JSON, name); +} + +static void lwtunnel_print_vxlan_opts(struct rtattr *attr) +{ + struct rtattr *tb[LWTUNNEL_IP_OPT_VXLAN_MAX + 1]; + struct rtattr *i = RTA_DATA(attr); + int rem = RTA_PAYLOAD(attr); + char *name = "vxlan_opts"; + __u32 gbp; + + parse_rtattr(tb, LWTUNNEL_IP_OPT_VXLAN_MAX, i, rem); + gbp = rta_getattr_u32(tb[LWTUNNEL_IP_OPT_VXLAN_GBP]); + + print_nl(); + print_string(PRINT_FP, name, "\t%s ", name); + open_json_array(PRINT_JSON, name); + open_json_object(NULL); + print_uint(PRINT_ANY, "gbp", "%u ", gbp); + close_json_object(); + close_json_array(PRINT_JSON, name); +} + +static void lwtunnel_print_erspan_opts(struct rtattr *attr) +{ + struct rtattr *tb[LWTUNNEL_IP_OPT_ERSPAN_MAX + 1]; + struct rtattr *i = RTA_DATA(attr); + char *name = "erspan_opts"; + __u8 ver, hwid, dir; + __u32 idx; + + parse_rtattr(tb, LWTUNNEL_IP_OPT_ERSPAN_MAX, i, RTA_PAYLOAD(attr)); + ver = rta_getattr_u8(tb[LWTUNNEL_IP_OPT_ERSPAN_VER]); + if (ver == 1) { + idx = rta_getattr_be32(tb[LWTUNNEL_IP_OPT_ERSPAN_INDEX]); + dir = 0; + hwid = 0; + } else { + idx = 0; + dir = rta_getattr_u8(tb[LWTUNNEL_IP_OPT_ERSPAN_DIR]); + hwid = rta_getattr_u8(tb[LWTUNNEL_IP_OPT_ERSPAN_HWID]); + } + + print_nl(); + print_string(PRINT_FP, name, "\t%s ", name); + open_json_array(PRINT_JSON, name); + open_json_object(NULL); + print_uint(PRINT_ANY, "ver", "%u", ver); + print_uint(PRINT_ANY, "index", ":%u", idx); + print_uint(PRINT_ANY, "dir", ":%u", dir); + print_uint(PRINT_ANY, "hwid", ":%u ", hwid); + close_json_object(); + close_json_array(PRINT_JSON, name); +} + +static void lwtunnel_print_opts(struct rtattr *attr) +{ + struct rtattr *tb_opt[LWTUNNEL_IP_OPTS_MAX + 1]; + + parse_rtattr_nested(tb_opt, LWTUNNEL_IP_OPTS_MAX, attr); + if (tb_opt[LWTUNNEL_IP_OPTS_GENEVE]) + lwtunnel_print_geneve_opts(tb_opt[LWTUNNEL_IP_OPTS_GENEVE]); + else if (tb_opt[LWTUNNEL_IP_OPTS_VXLAN]) + lwtunnel_print_vxlan_opts(tb_opt[LWTUNNEL_IP_OPTS_VXLAN]); + else if (tb_opt[LWTUNNEL_IP_OPTS_ERSPAN]) + lwtunnel_print_erspan_opts(tb_opt[LWTUNNEL_IP_OPTS_ERSPAN]); +} + +static void print_encap_ip(FILE *fp, struct rtattr *encap) +{ + struct rtattr *tb[LWTUNNEL_IP_MAX+1]; + __u16 flags; + + parse_rtattr_nested(tb, LWTUNNEL_IP_MAX, encap); + + if (tb[LWTUNNEL_IP_ID]) + print_u64(PRINT_ANY, "id", "id %llu ", + ntohll(rta_getattr_u64(tb[LWTUNNEL_IP_ID]))); + + if (tb[LWTUNNEL_IP_SRC]) + print_color_string(PRINT_ANY, COLOR_INET, + "src", "src %s ", + rt_addr_n2a_rta(AF_INET, tb[LWTUNNEL_IP_SRC])); + + if (tb[LWTUNNEL_IP_DST]) + print_color_string(PRINT_ANY, COLOR_INET, + "dst", "dst %s ", + rt_addr_n2a_rta(AF_INET, tb[LWTUNNEL_IP_DST])); + + if (tb[LWTUNNEL_IP_TTL]) + print_uint(PRINT_ANY, "ttl", + "ttl %u ", rta_getattr_u8(tb[LWTUNNEL_IP_TTL])); + + if (tb[LWTUNNEL_IP_TOS]) + print_uint(PRINT_ANY, "tos", + "tos %d ", rta_getattr_u8(tb[LWTUNNEL_IP_TOS])); + + if (tb[LWTUNNEL_IP_FLAGS]) { + flags = rta_getattr_u16(tb[LWTUNNEL_IP_FLAGS]); + if (flags & TUNNEL_KEY) + print_bool(PRINT_ANY, "key", "key ", true); + if (flags & TUNNEL_CSUM) + print_bool(PRINT_ANY, "csum", "csum ", true); + if (flags & TUNNEL_SEQ) + print_bool(PRINT_ANY, "seq", "seq ", true); + } + + if (tb[LWTUNNEL_IP_OPTS]) + lwtunnel_print_opts(tb[LWTUNNEL_IP_OPTS]); +} + +static void print_encap_ila(FILE *fp, struct rtattr *encap) +{ + struct rtattr *tb[ILA_ATTR_MAX+1]; + + parse_rtattr_nested(tb, ILA_ATTR_MAX, encap); + + if (tb[ILA_ATTR_LOCATOR]) { + char abuf[ADDR64_BUF_SIZE]; + + addr64_n2a(rta_getattr_u64(tb[ILA_ATTR_LOCATOR]), + abuf, sizeof(abuf)); + print_string(PRINT_ANY, "locator", + " %s ", abuf); + } + + if (tb[ILA_ATTR_CSUM_MODE]) + print_string(PRINT_ANY, "csum_mode", + " csum-mode %s ", + ila_csum_mode2name(rta_getattr_u8(tb[ILA_ATTR_CSUM_MODE]))); + + if (tb[ILA_ATTR_IDENT_TYPE]) + print_string(PRINT_ANY, "ident_type", + " ident-type %s ", + ila_ident_type2name(rta_getattr_u8(tb[ILA_ATTR_IDENT_TYPE]))); + + if (tb[ILA_ATTR_HOOK_TYPE]) + print_string(PRINT_ANY, "hook_type", + " hook-type %s ", + ila_hook_type2name(rta_getattr_u8(tb[ILA_ATTR_HOOK_TYPE]))); +} + +static void print_encap_ip6(FILE *fp, struct rtattr *encap) +{ + struct rtattr *tb[LWTUNNEL_IP6_MAX+1]; + __u16 flags; + + parse_rtattr_nested(tb, LWTUNNEL_IP6_MAX, encap); + + if (tb[LWTUNNEL_IP6_ID]) + print_u64(PRINT_ANY, "id", "id %llu ", + ntohll(rta_getattr_u64(tb[LWTUNNEL_IP6_ID]))); + + if (tb[LWTUNNEL_IP6_SRC]) + print_color_string(PRINT_ANY, COLOR_INET6, + "src", "src %s ", + rt_addr_n2a_rta(AF_INET6, tb[LWTUNNEL_IP6_SRC])); + + if (tb[LWTUNNEL_IP6_DST]) + print_color_string(PRINT_ANY, COLOR_INET6, + "dst", "dst %s ", + rt_addr_n2a_rta(AF_INET6, tb[LWTUNNEL_IP6_DST])); + + if (tb[LWTUNNEL_IP6_HOPLIMIT]) + print_u64(PRINT_ANY, "hoplimit", + "hoplimit %u ", + rta_getattr_u8(tb[LWTUNNEL_IP6_HOPLIMIT])); + + if (tb[LWTUNNEL_IP6_TC]) + print_uint(PRINT_ANY, "tc", + "tc %u ", rta_getattr_u8(tb[LWTUNNEL_IP6_TC])); + + if (tb[LWTUNNEL_IP6_FLAGS]) { + flags = rta_getattr_u16(tb[LWTUNNEL_IP6_FLAGS]); + if (flags & TUNNEL_KEY) + print_bool(PRINT_ANY, "key", "key ", true); + if (flags & TUNNEL_CSUM) + print_bool(PRINT_ANY, "csum", "csum ", true); + if (flags & TUNNEL_SEQ) + print_bool(PRINT_ANY, "seq", "seq ", true); + } + + if (tb[LWTUNNEL_IP6_OPTS]) + lwtunnel_print_opts(tb[LWTUNNEL_IP6_OPTS]); +} + +static void print_encap_bpf(FILE *fp, struct rtattr *encap) +{ + struct rtattr *tb[LWT_BPF_MAX+1]; + + parse_rtattr_nested(tb, LWT_BPF_MAX, encap); + + if (tb[LWT_BPF_IN]) + print_encap_bpf_prog(fp, tb[LWT_BPF_IN], "in"); + if (tb[LWT_BPF_OUT]) + print_encap_bpf_prog(fp, tb[LWT_BPF_OUT], "out"); + if (tb[LWT_BPF_XMIT]) + print_encap_bpf_prog(fp, tb[LWT_BPF_XMIT], "xmit"); + if (tb[LWT_BPF_XMIT_HEADROOM]) + print_uint(PRINT_ANY, "headroom", + " %u ", rta_getattr_u32(tb[LWT_BPF_XMIT_HEADROOM])); +} + +static void print_encap_xfrm(FILE *fp, struct rtattr *encap) +{ + struct rtattr *tb[LWT_XFRM_MAX+1]; + + parse_rtattr_nested(tb, LWT_XFRM_MAX, encap); + + if (tb[LWT_XFRM_IF_ID]) + print_uint(PRINT_ANY, "if_id", "if_id %lu ", + rta_getattr_u32(tb[LWT_XFRM_IF_ID])); + + if (tb[LWT_XFRM_LINK]) { + int link = rta_getattr_u32(tb[LWT_XFRM_LINK]); + + print_string(PRINT_ANY, "link_dev", "link_dev %s ", + ll_index_to_name(link)); + } +} + +void lwt_print_encap(FILE *fp, struct rtattr *encap_type, + struct rtattr *encap) +{ + int et; + + if (!encap_type) + return; + + et = rta_getattr_u16(encap_type); + + print_string(PRINT_ANY, "encap", " encap %s ", format_encap_type(et)); + + switch (et) { + case LWTUNNEL_ENCAP_MPLS: + print_encap_mpls(fp, encap); + break; + case LWTUNNEL_ENCAP_IP: + print_encap_ip(fp, encap); + break; + case LWTUNNEL_ENCAP_ILA: + print_encap_ila(fp, encap); + break; + case LWTUNNEL_ENCAP_IP6: + print_encap_ip6(fp, encap); + break; + case LWTUNNEL_ENCAP_BPF: + print_encap_bpf(fp, encap); + break; + case LWTUNNEL_ENCAP_SEG6: + print_encap_seg6(fp, encap); + break; + case LWTUNNEL_ENCAP_SEG6_LOCAL: + print_encap_seg6local(fp, encap); + break; + case LWTUNNEL_ENCAP_RPL: + print_encap_rpl(fp, encap); + break; + case LWTUNNEL_ENCAP_IOAM6: + print_encap_ioam6(fp, encap); + break; + case LWTUNNEL_ENCAP_XFRM: + print_encap_xfrm(fp, encap); + break; + } +} + +static struct ipv6_sr_hdr *parse_srh(char *segbuf, int hmac, bool encap) +{ + struct ipv6_sr_hdr *srh; + int nsegs = 0; + int srhlen; + char *s; + int i; + + s = segbuf; + for (i = 0; *s; *s++ == ',' ? i++ : *s); + nsegs = i + 1; + + if (!encap) + nsegs++; + + srhlen = 8 + 16*nsegs; + + if (hmac) + srhlen += 40; + + srh = malloc(srhlen); + memset(srh, 0, srhlen); + + srh->hdrlen = (srhlen >> 3) - 1; + srh->type = 4; + srh->segments_left = nsegs - 1; + srh->first_segment = nsegs - 1; + + if (hmac) + srh->flags |= SR6_FLAG1_HMAC; + + i = srh->first_segment; + for (s = strtok(segbuf, ","); s; s = strtok(NULL, ",")) { + inet_prefix addr; + + get_addr(&addr, s, AF_INET6); + memcpy(&srh->segments[i], addr.data, sizeof(struct in6_addr)); + i--; + } + + if (hmac) { + struct sr6_tlv_hmac *tlv; + + tlv = (struct sr6_tlv_hmac *)((char *)srh + srhlen - 40); + tlv->tlvhdr.type = SR6_TLV_HMAC; + tlv->tlvhdr.len = 38; + tlv->hmackeyid = htonl(hmac); + } + + return srh; +} + +static int parse_encap_seg6(struct rtattr *rta, size_t len, int *argcp, + char ***argvp) +{ + int mode_ok = 0, segs_ok = 0, hmac_ok = 0; + struct seg6_iptunnel_encap *tuninfo; + struct ipv6_sr_hdr *srh; + char **argv = *argvp; + char segbuf[1024] = ""; + int argc = *argcp; + int encap = -1; + __u32 hmac = 0; + int ret = 0; + int srhlen; + + while (argc > 0) { + if (strcmp(*argv, "mode") == 0) { + NEXT_ARG(); + if (mode_ok++) + duparg2("mode", *argv); + encap = read_seg6mode_type(*argv); + if (encap < 0) + invarg("\"mode\" value is invalid\n", *argv); + } else if (strcmp(*argv, "segs") == 0) { + NEXT_ARG(); + if (segs_ok++) + duparg2("segs", *argv); + if (encap == -1) + invarg("\"segs\" provided before \"mode\"\n", + *argv); + + strlcpy(segbuf, *argv, 1024); + } else if (strcmp(*argv, "hmac") == 0) { + NEXT_ARG(); + if (hmac_ok++) + duparg2("hmac", *argv); + get_u32(&hmac, *argv, 0); + } else { + break; + } + argc--; argv++; + } + + srh = parse_srh(segbuf, hmac, encap); + srhlen = (srh->hdrlen + 1) << 3; + + tuninfo = malloc(sizeof(*tuninfo) + srhlen); + memset(tuninfo, 0, sizeof(*tuninfo) + srhlen); + + tuninfo->mode = encap; + + memcpy(tuninfo->srh, srh, srhlen); + + if (rta_addattr_l(rta, len, SEG6_IPTUNNEL_SRH, tuninfo, + sizeof(*tuninfo) + srhlen)) { + ret = -1; + goto out; + } + + *argcp = argc + 1; + *argvp = argv - 1; + +out: + free(tuninfo); + free(srh); + + return ret; +} + +static struct ipv6_rpl_sr_hdr *parse_rpl_srh(char *segbuf) +{ + struct ipv6_rpl_sr_hdr *srh; + int nsegs = 0; + int srhlen; + char *s; + int i; + + s = segbuf; + for (i = 0; *s; *s++ == ',' ? i++ : *s); + nsegs = i + 1; + + srhlen = 8 + 16 * nsegs; + + srh = calloc(1, srhlen); + + srh->hdrlen = (srhlen >> 3) - 1; + srh->type = 3; + srh->segments_left = nsegs; + + for (s = strtok(segbuf, ","); s; s = strtok(NULL, ",")) { + inet_prefix addr; + + get_addr(&addr, s, AF_INET6); + memcpy(&srh->rpl_segaddr[i], addr.data, sizeof(struct in6_addr)); + i--; + } + + return srh; +} + +static int parse_encap_rpl(struct rtattr *rta, size_t len, int *argcp, + char ***argvp) +{ + struct ipv6_rpl_sr_hdr *srh; + char **argv = *argvp; + char segbuf[1024] = ""; + int argc = *argcp; + int segs_ok = 0; + int ret = 0; + int srhlen; + + while (argc > 0) { + if (strcmp(*argv, "segs") == 0) { + NEXT_ARG(); + if (segs_ok++) + duparg2("segs", *argv); + + strlcpy(segbuf, *argv, 1024); + } else { + break; + } + argc--; argv++; + } + + srh = parse_rpl_srh(segbuf); + srhlen = (srh->hdrlen + 1) << 3; + + if (rta_addattr_l(rta, len, RPL_IPTUNNEL_SRH, srh, + srhlen)) { + ret = -1; + goto out; + } + + *argcp = argc + 1; + *argvp = argv - 1; + +out: + free(srh); + + return ret; +} + +static int parse_ioam6_freq(char *buf, __u32 *freq_k, __u32 *freq_n) +{ + char *s; + int i; + + s = buf; + for (i = 0; *s; *s++ == '/' ? i++ : *s); + if (i != 1) + return 1; + + s = strtok(buf, "/"); + if (!s || get_u32(freq_k, s, 10)) + return 1; + + s = strtok(NULL, "/"); + if (!s || get_u32(freq_n, s, 10)) + return 1; + + s = strtok(NULL, "/"); + if (s) + return 1; + + return 0; +} + +static int parse_encap_ioam6(struct rtattr *rta, size_t len, int *argcp, + char ***argvp) +{ + int ns_found = 0, argc = *argcp; + __u16 trace_ns, trace_size = 0; + struct ioam6_trace_hdr *trace; + char **argv = *argvp; + __u32 trace_type = 0; + __u32 freq_k, freq_n; + char buf[16] = {0}; + inet_prefix addr; + __u8 mode; + + if (strcmp(*argv, "freq") != 0) { + freq_k = IOAM6_IPTUNNEL_FREQ_MIN; + freq_n = IOAM6_IPTUNNEL_FREQ_MIN; + } else { + NEXT_ARG(); + + if (strlen(*argv) > sizeof(buf) - 1) + invarg("Invalid frequency (too long)", *argv); + + strncpy(buf, *argv, sizeof(buf)); + + if (parse_ioam6_freq(buf, &freq_k, &freq_n)) + invarg("Invalid frequency (malformed)", *argv); + + if (freq_k < IOAM6_IPTUNNEL_FREQ_MIN || + freq_k > IOAM6_IPTUNNEL_FREQ_MAX) + invarg("Out of bound \"k\" frequency", *argv); + + if (freq_n < IOAM6_IPTUNNEL_FREQ_MIN || + freq_n > IOAM6_IPTUNNEL_FREQ_MAX) + invarg("Out of bound \"n\" frequency", *argv); + + if (freq_k > freq_n) + invarg("Frequency with k > n is forbidden", *argv); + + NEXT_ARG(); + } + + if (strcmp(*argv, "mode") != 0) { + mode = IOAM6_IPTUNNEL_MODE_INLINE; + } else { + NEXT_ARG(); + + mode = read_ioam6mode_type(*argv); + if (!mode) + invarg("Invalid mode", *argv); + + NEXT_ARG(); + } + + if (strcmp(*argv, "tundst") != 0) { + if (mode != IOAM6_IPTUNNEL_MODE_INLINE) + missarg("tundst"); + } else { + if (mode == IOAM6_IPTUNNEL_MODE_INLINE) + invarg("Inline mode does not need tundst", *argv); + + NEXT_ARG(); + + get_addr(&addr, *argv, AF_INET6); + if (addr.family != AF_INET6 || addr.bytelen != 16) + invarg("Invalid IPv6 address for tundst", *argv); + + NEXT_ARG(); + } + + if (strcmp(*argv, "trace") != 0) + missarg("trace"); + + NEXT_ARG(); + + if (strcmp(*argv, "prealloc") != 0) + missarg("prealloc"); + + while (NEXT_ARG_OK()) { + NEXT_ARG_FWD(); + + if (strcmp(*argv, "type") == 0) { + NEXT_ARG(); + + if (trace_type) + duparg2("type", *argv); + + if (get_u32(&trace_type, *argv, 0) || !trace_type) + invarg("Invalid trace type", *argv); + } else if (strcmp(*argv, "ns") == 0) { + NEXT_ARG(); + + if (ns_found++) + duparg2("ns", *argv); + + if (get_u16(&trace_ns, *argv, 0)) + invarg("Invalid namespace ID", *argv); + } else if (strcmp(*argv, "size") == 0) { + NEXT_ARG(); + + if (trace_size) + duparg2("size", *argv); + + if (get_u16(&trace_size, *argv, 0) || !trace_size) + invarg("Invalid trace size", *argv); + + if (trace_size % 4) + invarg("Trace size must be a 4-octet multiple", + *argv); + + if (trace_size > IOAM6_TRACE_DATA_SIZE_MAX) + invarg("Trace size is too big", *argv); + } else { + break; + } + } + + if (!trace_type) + missarg("type"); + if (!ns_found) + missarg("ns"); + if (!trace_size) + missarg("size"); + + trace = calloc(1, sizeof(*trace)); + if (!trace) + return -1; + + trace->type_be32 = htonl(trace_type << 8); + trace->namespace_id = htons(trace_ns); + trace->remlen = (__u8)(trace_size / 4); + + if (rta_addattr32(rta, len, IOAM6_IPTUNNEL_FREQ_K, freq_k) || + rta_addattr32(rta, len, IOAM6_IPTUNNEL_FREQ_N, freq_n) || + rta_addattr8(rta, len, IOAM6_IPTUNNEL_MODE, mode) || + (mode != IOAM6_IPTUNNEL_MODE_INLINE && + rta_addattr_l(rta, len, IOAM6_IPTUNNEL_DST, &addr.data, addr.bytelen)) || + rta_addattr_l(rta, len, IOAM6_IPTUNNEL_TRACE, trace, sizeof(*trace))) { + free(trace); + return -1; + } + + *argcp = argc + 1; + *argvp = argv - 1; + + free(trace); + return 0; +} + +struct lwt_x { + struct rtattr *rta; + size_t len; +}; + +static void bpf_lwt_cb(void *lwt_ptr, int fd, const char *annotation) +{ + struct lwt_x *x = lwt_ptr; + + rta_addattr32(x->rta, x->len, LWT_BPF_PROG_FD, fd); + rta_addattr_l(x->rta, x->len, LWT_BPF_PROG_NAME, annotation, + strlen(annotation) + 1); +} + +static const struct bpf_cfg_ops bpf_cb_ops = { + .ebpf_cb = bpf_lwt_cb, +}; + +static int lwt_parse_bpf(struct rtattr *rta, size_t len, + int *argcp, char ***argvp, + int attr, const enum bpf_prog_type bpf_type) +{ + struct bpf_cfg_in cfg = { + .type = bpf_type, + .argc = *argcp, + .argv = *argvp, + }; + struct lwt_x x = { + .rta = rta, + .len = len, + }; + struct rtattr *nest; + int err; + + nest = rta_nest(rta, len, attr); + err = bpf_parse_and_load_common(&cfg, &bpf_cb_ops, &x); + if (err < 0) { + fprintf(stderr, "Failed to parse eBPF program: %s\n", + strerror(-err)); + return -1; + } + rta_nest_end(rta, nest); + + *argcp = cfg.argc; + *argvp = cfg.argv; + + return 0; +} + +/* for the moment, counters are always initialized to zero by the kernel; so we + * do not expect to parse any argument here. + */ +static int seg6local_fill_counters(struct rtattr *rta, size_t len, int attr) +{ + struct rtattr *nest; + int ret; + + nest = rta_nest(rta, len, attr); + + ret = rta_addattr64(rta, len, SEG6_LOCAL_CNT_PACKETS, 0); + if (ret < 0) + return ret; + + ret = rta_addattr64(rta, len, SEG6_LOCAL_CNT_BYTES, 0); + if (ret < 0) + return ret; + + ret = rta_addattr64(rta, len, SEG6_LOCAL_CNT_ERRORS, 0); + if (ret < 0) + return ret; + + rta_nest_end(rta, nest); + return 0; +} + +static int seg6local_parse_flavors(struct rtattr *rta, size_t len, + int *argcp, char ***argvp, int attr) +{ + int lbl_ok = 0, nfl_ok = 0; + __u8 lbl = 0, nfl = 0; + struct rtattr *nest; + __u32 flavors = 0; + int ret; + + char **argv = *argvp; + int argc = *argcp; + + nest = rta_nest(rta, len, attr); + + ret = parse_seg6local_flavors(*argv, &flavors); + if (ret < 0) + return ret; + + ret = rta_addattr32(rta, len, SEG6_LOCAL_FLV_OPERATION, flavors); + if (ret < 0) + return ret; + + if (flavors & (1 << SEG6_LOCAL_FLV_OP_NEXT_CSID)) { + NEXT_ARG_FWD(); + if (strcmp(*argv, "lblen") == 0){ + NEXT_ARG(); + if (lbl_ok++) + duparg2("lblen", *argv); + if (get_u8(&lbl, *argv, 0)) + invarg("\"locator-block length\" value is invalid\n", *argv); + ret = rta_addattr8(rta, len, SEG6_LOCAL_FLV_LCBLOCK_BITS, lbl); + NEXT_ARG_FWD(); + } + + if (strcmp(*argv, "nflen") == 0){ + NEXT_ARG(); + if (nfl_ok++) + duparg2("nflen", *argv); + if (get_u8(&nfl, *argv, 0)) + invarg("\"locator-node function length\" value is invalid\n", *argv); + ret = rta_addattr8(rta, len, SEG6_LOCAL_FLV_LCNODE_FN_BITS, nfl); + NEXT_ARG_FWD(); + } + PREV_ARG(); + } + + rta_nest_end(rta, nest); + + *argcp = argc; + *argvp = argv; + + return 0; +} + +static int parse_encap_seg6local(struct rtattr *rta, size_t len, int *argcp, + char ***argvp) +{ + int nh4_ok = 0, nh6_ok = 0, iif_ok = 0, oif_ok = 0, flavors_ok = 0; + int segs_ok = 0, hmac_ok = 0, table_ok = 0, vrftable_ok = 0; + int action_ok = 0, srh_ok = 0, bpf_ok = 0, counters_ok = 0; + __u32 action = 0, table, vrftable, iif, oif; + struct ipv6_sr_hdr *srh; + char **argv = *argvp; + int argc = *argcp; + char segbuf[1024]; + inet_prefix addr; + __u32 hmac = 0; + int ret = 0; + + while (argc > 0) { + if (strcmp(*argv, "action") == 0) { + NEXT_ARG(); + if (action_ok++) + duparg2("action", *argv); + action = read_action_type(*argv); + if (!action) + invarg("\"action\" value is invalid\n", *argv); + ret = rta_addattr32(rta, len, SEG6_LOCAL_ACTION, + action); + } else if (strcmp(*argv, "table") == 0) { + NEXT_ARG(); + if (table_ok++) + duparg2("table", *argv); + if (rtnl_rttable_a2n(&table, *argv)) + invarg("invalid table id\n", *argv); + ret = rta_addattr32(rta, len, SEG6_LOCAL_TABLE, table); + } else if (strcmp(*argv, "vrftable") == 0) { + NEXT_ARG(); + if (vrftable_ok++) + duparg2("vrftable", *argv); + if (rtnl_rttable_a2n(&vrftable, *argv)) + invarg("invalid vrf table id\n", *argv); + ret = rta_addattr32(rta, len, SEG6_LOCAL_VRFTABLE, + vrftable); + } else if (strcmp(*argv, "nh4") == 0) { + NEXT_ARG(); + if (nh4_ok++) + duparg2("nh4", *argv); + get_addr(&addr, *argv, AF_INET); + ret = rta_addattr_l(rta, len, SEG6_LOCAL_NH4, + &addr.data, addr.bytelen); + } else if (strcmp(*argv, "nh6") == 0) { + NEXT_ARG(); + if (nh6_ok++) + duparg2("nh6", *argv); + get_addr(&addr, *argv, AF_INET6); + ret = rta_addattr_l(rta, len, SEG6_LOCAL_NH6, + &addr.data, addr.bytelen); + } else if (strcmp(*argv, "iif") == 0) { + NEXT_ARG(); + if (iif_ok++) + duparg2("iif", *argv); + iif = ll_name_to_index(*argv); + if (!iif) + exit(nodev(*argv)); + ret = rta_addattr32(rta, len, SEG6_LOCAL_IIF, iif); + } else if (strcmp(*argv, "oif") == 0) { + NEXT_ARG(); + if (oif_ok++) + duparg2("oif", *argv); + oif = ll_name_to_index(*argv); + if (!oif) + exit(nodev(*argv)); + ret = rta_addattr32(rta, len, SEG6_LOCAL_OIF, oif); + } else if (strcmp(*argv, "count") == 0) { + if (counters_ok++) + duparg2("count", *argv); + ret = seg6local_fill_counters(rta, len, + SEG6_LOCAL_COUNTERS); + } else if (strcmp(*argv, "flavors") == 0) { + NEXT_ARG(); + if (flavors_ok++) + duparg2("flavors", *argv); + + if (seg6local_parse_flavors(rta, len, &argc, &argv, + SEG6_LOCAL_FLAVORS)) + invarg("invalid \"flavors\" attribute\n", + *argv); + } else if (strcmp(*argv, "srh") == 0) { + NEXT_ARG(); + if (srh_ok++) + duparg2("srh", *argv); + if (strcmp(*argv, "segs") != 0) + invarg("missing \"segs\" attribute for srh\n", + *argv); + NEXT_ARG(); + if (segs_ok++) + duparg2("segs", *argv); + strncpy(segbuf, *argv, 1024); + segbuf[1023] = 0; + if (!NEXT_ARG_OK()) + break; + NEXT_ARG(); + if (strcmp(*argv, "hmac") == 0) { + NEXT_ARG(); + if (hmac_ok++) + duparg2("hmac", *argv); + get_u32(&hmac, *argv, 0); + } else { + continue; + } + } else if (strcmp(*argv, "endpoint") == 0) { + NEXT_ARG(); + if (bpf_ok++) + duparg2("endpoint", *argv); + + if (lwt_parse_bpf(rta, len, &argc, &argv, SEG6_LOCAL_BPF, + BPF_PROG_TYPE_LWT_SEG6LOCAL) < 0) + exit(-1); + } else { + break; + } + if (ret) + return ret; + argc--; argv++; + } + + if (!action) { + fprintf(stderr, "Missing action type\n"); + exit(-1); + } + + if (srh_ok) { + int srhlen; + + srh = parse_srh(segbuf, hmac, + action == SEG6_LOCAL_ACTION_END_B6_ENCAP); + srhlen = (srh->hdrlen + 1) << 3; + ret = rta_addattr_l(rta, len, SEG6_LOCAL_SRH, srh, srhlen); + free(srh); + } + + *argcp = argc + 1; + *argvp = argv - 1; + + return ret; +} + +static int parse_encap_mpls(struct rtattr *rta, size_t len, + int *argcp, char ***argvp) +{ + inet_prefix addr; + int argc = *argcp; + char **argv = *argvp; + int ttl_ok = 0; + + if (get_addr(&addr, *argv, AF_MPLS)) { + fprintf(stderr, + "Error: an inet address is expected rather than \"%s\".\n", + *argv); + exit(1); + } + + if (rta_addattr_l(rta, len, MPLS_IPTUNNEL_DST, + &addr.data, addr.bytelen)) + return -1; + + argc--; + argv++; + + while (argc > 0) { + if (strcmp(*argv, "ttl") == 0) { + __u8 ttl; + + NEXT_ARG(); + if (ttl_ok++) + duparg2("ttl", *argv); + if (get_u8(&ttl, *argv, 0)) + invarg("\"ttl\" value is invalid\n", *argv); + if (rta_addattr8(rta, len, MPLS_IPTUNNEL_TTL, ttl)) + return -1; + } else { + break; + } + argc--; argv++; + } + + /* argv is currently the first unparsed argument, + * but the lwt_parse_encap() caller will move to the next, + * so step back + */ + *argcp = argc + 1; + *argvp = argv - 1; + + return 0; +} + +static int lwtunnel_parse_geneve_opt(char *str, size_t len, struct rtattr *rta) +{ + struct rtattr *nest; + char *token; + int i, err; + + nest = rta_nest(rta, len, LWTUNNEL_IP_OPTS_GENEVE | NLA_F_NESTED); + i = 1; + token = strsep(&str, ":"); + while (token) { + switch (i) { + case LWTUNNEL_IP_OPT_GENEVE_CLASS: + { + __be16 opt_class; + + if (!strlen(token)) + break; + err = get_be16(&opt_class, token, 0); + if (err) + return err; + + rta_addattr16(rta, len, i, opt_class); + break; + } + case LWTUNNEL_IP_OPT_GENEVE_TYPE: + { + __u8 opt_type; + + if (!strlen(token)) + break; + err = get_u8(&opt_type, token, 0); + if (err) + return err; + + rta_addattr8(rta, len, i, opt_type); + break; + } + case LWTUNNEL_IP_OPT_GENEVE_DATA: + { + size_t token_len = strlen(token); + __u8 *opts; + + if (!token_len) + break; + opts = malloc(token_len / 2); + if (!opts) + return -1; + if (hex2mem(token, opts, token_len / 2) < 0) { + free(opts); + return -1; + } + rta_addattr_l(rta, len, i, opts, token_len / 2); + free(opts); + + break; + } + default: + fprintf(stderr, "Unknown \"geneve_opts\" type\n"); + return -1; + } + + token = strsep(&str, ":"); + i++; + } + rta_nest_end(rta, nest); + + return 0; +} + +static int lwtunnel_parse_geneve_opts(char *str, size_t len, struct rtattr *rta) +{ + char *token; + int err; + + token = strsep(&str, ","); + while (token) { + err = lwtunnel_parse_geneve_opt(token, len, rta); + if (err) + return err; + + token = strsep(&str, ","); + } + + return 0; +} + +static int lwtunnel_parse_vxlan_opts(char *str, size_t len, struct rtattr *rta) +{ + struct rtattr *nest; + __u32 gbp; + int err; + + nest = rta_nest(rta, len, LWTUNNEL_IP_OPTS_VXLAN | NLA_F_NESTED); + err = get_u32(&gbp, str, 0); + if (err) + return err; + rta_addattr32(rta, len, LWTUNNEL_IP_OPT_VXLAN_GBP, gbp); + + rta_nest_end(rta, nest); + return 0; +} + +static int lwtunnel_parse_erspan_opts(char *str, size_t len, struct rtattr *rta) +{ + struct rtattr *nest; + char *token; + int i, err; + + nest = rta_nest(rta, len, LWTUNNEL_IP_OPTS_ERSPAN | NLA_F_NESTED); + i = 1; + token = strsep(&str, ":"); + while (token) { + switch (i) { + case LWTUNNEL_IP_OPT_ERSPAN_VER: + { + __u8 opt_type; + + if (!strlen(token)) + break; + err = get_u8(&opt_type, token, 0); + if (err) + return err; + + rta_addattr8(rta, len, i, opt_type); + break; + } + case LWTUNNEL_IP_OPT_ERSPAN_INDEX: + { + __be32 opt_class; + + if (!strlen(token)) + break; + err = get_be32(&opt_class, token, 0); + if (err) + return err; + + rta_addattr32(rta, len, i, opt_class); + break; + } + case LWTUNNEL_IP_OPT_ERSPAN_DIR: + { + __u8 opt_type; + + if (!strlen(token)) + break; + err = get_u8(&opt_type, token, 0); + if (err) + return err; + + rta_addattr8(rta, len, i, opt_type); + break; + } + case LWTUNNEL_IP_OPT_ERSPAN_HWID: + { + __u8 opt_type; + + if (!strlen(token)) + break; + err = get_u8(&opt_type, token, 0); + if (err) + return err; + + rta_addattr8(rta, len, i, opt_type); + break; + } + default: + fprintf(stderr, "Unknown \"geneve_opts\" type\n"); + return -1; + } + + token = strsep(&str, ":"); + i++; + } + + rta_nest_end(rta, nest); + return 0; +} + +static int parse_encap_ip(struct rtattr *rta, size_t len, + int *argcp, char ***argvp) +{ + int id_ok = 0, dst_ok = 0, src_ok = 0, tos_ok = 0, ttl_ok = 0; + int key_ok = 0, csum_ok = 0, seq_ok = 0, opts_ok = 0; + char **argv = *argvp; + int argc = *argcp; + int ret = 0; + __u16 flags = 0; + + while (argc > 0) { + if (strcmp(*argv, "id") == 0) { + __u64 id; + + NEXT_ARG(); + if (id_ok++) + duparg2("id", *argv); + if (get_be64(&id, *argv, 0)) + invarg("\"id\" value is invalid\n", *argv); + ret = rta_addattr64(rta, len, LWTUNNEL_IP_ID, id); + } else if (strcmp(*argv, "dst") == 0) { + inet_prefix addr; + + NEXT_ARG(); + if (dst_ok++) + duparg2("dst", *argv); + get_addr(&addr, *argv, AF_INET); + ret = rta_addattr_l(rta, len, LWTUNNEL_IP_DST, + &addr.data, addr.bytelen); + } else if (strcmp(*argv, "src") == 0) { + inet_prefix addr; + + NEXT_ARG(); + if (src_ok++) + duparg2("src", *argv); + get_addr(&addr, *argv, AF_INET); + ret = rta_addattr_l(rta, len, LWTUNNEL_IP_SRC, + &addr.data, addr.bytelen); + } else if (strcmp(*argv, "tos") == 0) { + __u32 tos; + + NEXT_ARG(); + if (tos_ok++) + duparg2("tos", *argv); + if (rtnl_dsfield_a2n(&tos, *argv)) + invarg("\"tos\" value is invalid\n", *argv); + ret = rta_addattr8(rta, len, LWTUNNEL_IP_TOS, tos); + } else if (strcmp(*argv, "ttl") == 0) { + __u8 ttl; + + NEXT_ARG(); + if (ttl_ok++) + duparg2("ttl", *argv); + if (get_u8(&ttl, *argv, 0)) + invarg("\"ttl\" value is invalid\n", *argv); + ret = rta_addattr8(rta, len, LWTUNNEL_IP_TTL, ttl); + } else if (strcmp(*argv, "geneve_opts") == 0) { + struct rtattr *nest; + + if (opts_ok++) + duparg2("opts", *argv); + + NEXT_ARG(); + + nest = rta_nest(rta, len, + LWTUNNEL_IP_OPTS | NLA_F_NESTED); + ret = lwtunnel_parse_geneve_opts(*argv, len, rta); + if (ret) + invarg("\"geneve_opts\" value is invalid\n", + *argv); + rta_nest_end(rta, nest); + } else if (strcmp(*argv, "vxlan_opts") == 0) { + struct rtattr *nest; + + if (opts_ok++) + duparg2("opts", *argv); + + NEXT_ARG(); + + nest = rta_nest(rta, len, + LWTUNNEL_IP_OPTS | NLA_F_NESTED); + ret = lwtunnel_parse_vxlan_opts(*argv, len, rta); + if (ret) + invarg("\"vxlan_opts\" value is invalid\n", + *argv); + rta_nest_end(rta, nest); + } else if (strcmp(*argv, "erspan_opts") == 0) { + struct rtattr *nest; + + if (opts_ok++) + duparg2("opts", *argv); + + NEXT_ARG(); + + nest = rta_nest(rta, len, + LWTUNNEL_IP_OPTS | NLA_F_NESTED); + ret = lwtunnel_parse_erspan_opts(*argv, len, rta); + if (ret) + invarg("\"erspan_opts\" value is invalid\n", + *argv); + rta_nest_end(rta, nest); + } else if (strcmp(*argv, "key") == 0) { + if (key_ok++) + duparg2("key", *argv); + flags |= TUNNEL_KEY; + } else if (strcmp(*argv, "csum") == 0) { + if (csum_ok++) + duparg2("csum", *argv); + flags |= TUNNEL_CSUM; + } else if (strcmp(*argv, "seq") == 0) { + if (seq_ok++) + duparg2("seq", *argv); + flags |= TUNNEL_SEQ; + } else { + break; + } + if (ret) + break; + argc--; argv++; + } + + if (flags) + ret = rta_addattr16(rta, len, LWTUNNEL_IP_FLAGS, flags); + + /* argv is currently the first unparsed argument, + * but the lwt_parse_encap() caller will move to the next, + * so step back + */ + *argcp = argc + 1; + *argvp = argv - 1; + + return ret; +} + +static int parse_encap_ila(struct rtattr *rta, size_t len, + int *argcp, char ***argvp) +{ + __u64 locator; + int argc = *argcp; + char **argv = *argvp; + int ret = 0; + + if (get_addr64(&locator, *argv) < 0) { + fprintf(stderr, "Bad locator: %s\n", *argv); + exit(1); + } + + argc--; argv++; + + if (rta_addattr64(rta, len, ILA_ATTR_LOCATOR, locator)) + return -1; + + while (argc > 0) { + if (strcmp(*argv, "csum-mode") == 0) { + int csum_mode; + + NEXT_ARG(); + + csum_mode = ila_csum_name2mode(*argv); + if (csum_mode < 0) + invarg("\"csum-mode\" value is invalid\n", + *argv); + + ret = rta_addattr8(rta, len, ILA_ATTR_CSUM_MODE, + (__u8)csum_mode); + + argc--; argv++; + } else if (strcmp(*argv, "ident-type") == 0) { + int ident_type; + + NEXT_ARG(); + + ident_type = ila_ident_name2type(*argv); + if (ident_type < 0) + invarg("\"ident-type\" value is invalid\n", + *argv); + + ret = rta_addattr8(rta, len, ILA_ATTR_IDENT_TYPE, + (__u8)ident_type); + + argc--; argv++; + } else if (strcmp(*argv, "hook-type") == 0) { + int hook_type; + + NEXT_ARG(); + + hook_type = ila_hook_name2type(*argv); + if (hook_type < 0) + invarg("\"hook-type\" value is invalid\n", + *argv); + + ret = rta_addattr8(rta, len, ILA_ATTR_HOOK_TYPE, + (__u8)hook_type); + + argc--; argv++; + } else { + break; + } + if (ret) + break; + } + + /* argv is currently the first unparsed argument, + * but the lwt_parse_encap() caller will move to the next, + * so step back + */ + *argcp = argc + 1; + *argvp = argv - 1; + + return ret; +} + +static int parse_encap_ip6(struct rtattr *rta, size_t len, + int *argcp, char ***argvp) +{ + int id_ok = 0, dst_ok = 0, src_ok = 0, tos_ok = 0, ttl_ok = 0; + int key_ok = 0, csum_ok = 0, seq_ok = 0, opts_ok = 0; + char **argv = *argvp; + int argc = *argcp; + int ret = 0; + __u16 flags = 0; + + while (argc > 0) { + if (strcmp(*argv, "id") == 0) { + __u64 id; + + NEXT_ARG(); + if (id_ok++) + duparg2("id", *argv); + if (get_be64(&id, *argv, 0)) + invarg("\"id\" value is invalid\n", *argv); + ret = rta_addattr64(rta, len, LWTUNNEL_IP6_ID, id); + } else if (strcmp(*argv, "dst") == 0) { + inet_prefix addr; + + NEXT_ARG(); + if (dst_ok++) + duparg2("dst", *argv); + get_addr(&addr, *argv, AF_INET6); + ret = rta_addattr_l(rta, len, LWTUNNEL_IP6_DST, + &addr.data, addr.bytelen); + } else if (strcmp(*argv, "src") == 0) { + inet_prefix addr; + + NEXT_ARG(); + if (src_ok++) + duparg2("src", *argv); + get_addr(&addr, *argv, AF_INET6); + ret = rta_addattr_l(rta, len, LWTUNNEL_IP6_SRC, + &addr.data, addr.bytelen); + } else if (strcmp(*argv, "tc") == 0) { + __u32 tc; + + NEXT_ARG(); + if (tos_ok++) + duparg2("tc", *argv); + if (rtnl_dsfield_a2n(&tc, *argv)) + invarg("\"tc\" value is invalid\n", *argv); + ret = rta_addattr8(rta, len, LWTUNNEL_IP6_TC, tc); + } else if (strcmp(*argv, "hoplimit") == 0) { + __u8 hoplimit; + + NEXT_ARG(); + if (ttl_ok++) + duparg2("hoplimit", *argv); + if (get_u8(&hoplimit, *argv, 0)) + invarg("\"hoplimit\" value is invalid\n", + *argv); + ret = rta_addattr8(rta, len, LWTUNNEL_IP6_HOPLIMIT, + hoplimit); + } else if (strcmp(*argv, "geneve_opts") == 0) { + struct rtattr *nest; + + if (opts_ok++) + duparg2("opts", *argv); + + NEXT_ARG(); + + nest = rta_nest(rta, len, + LWTUNNEL_IP_OPTS | NLA_F_NESTED); + ret = lwtunnel_parse_geneve_opts(*argv, len, rta); + if (ret) + invarg("\"geneve_opts\" value is invalid\n", + *argv); + rta_nest_end(rta, nest); + } else if (strcmp(*argv, "vxlan_opts") == 0) { + struct rtattr *nest; + + if (opts_ok++) + duparg2("opts", *argv); + + NEXT_ARG(); + + nest = rta_nest(rta, len, + LWTUNNEL_IP_OPTS | NLA_F_NESTED); + ret = lwtunnel_parse_vxlan_opts(*argv, len, rta); + if (ret) + invarg("\"vxlan_opts\" value is invalid\n", + *argv); + rta_nest_end(rta, nest); + } else if (strcmp(*argv, "erspan_opts") == 0) { + struct rtattr *nest; + + if (opts_ok++) + duparg2("opts", *argv); + + NEXT_ARG(); + + nest = rta_nest(rta, len, + LWTUNNEL_IP_OPTS | NLA_F_NESTED); + ret = lwtunnel_parse_erspan_opts(*argv, len, rta); + if (ret) + invarg("\"erspan_opts\" value is invalid\n", + *argv); + rta_nest_end(rta, nest); + } else if (strcmp(*argv, "key") == 0) { + if (key_ok++) + duparg2("key", *argv); + flags |= TUNNEL_KEY; + } else if (strcmp(*argv, "csum") == 0) { + if (csum_ok++) + duparg2("csum", *argv); + flags |= TUNNEL_CSUM; + } else if (strcmp(*argv, "seq") == 0) { + if (seq_ok++) + duparg2("seq", *argv); + flags |= TUNNEL_SEQ; + } else { + break; + } + if (ret) + break; + argc--; argv++; + } + + if (flags) + ret = rta_addattr16(rta, len, LWTUNNEL_IP6_FLAGS, flags); + + /* argv is currently the first unparsed argument, + * but the lwt_parse_encap() caller will move to the next, + * so step back + */ + *argcp = argc + 1; + *argvp = argv - 1; + + return ret; +} + +static void lwt_bpf_usage(void) +{ + fprintf(stderr, "Usage: ip route ... encap bpf [ in BPF ] [ out BPF ] [ xmit BPF ] [...]\n"); + fprintf(stderr, "BPF := obj FILE [ section NAME ] [ verbose ]\n"); + exit(-1); +} + +static int parse_encap_bpf(struct rtattr *rta, size_t len, int *argcp, + char ***argvp) +{ + char **argv = *argvp; + int argc = *argcp; + int headroom_set = 0; + + while (argc > 0) { + if (strcmp(*argv, "in") == 0) { + NEXT_ARG(); + if (lwt_parse_bpf(rta, len, &argc, &argv, LWT_BPF_IN, + BPF_PROG_TYPE_LWT_IN) < 0) + return -1; + } else if (strcmp(*argv, "out") == 0) { + NEXT_ARG(); + if (lwt_parse_bpf(rta, len, &argc, &argv, LWT_BPF_OUT, + BPF_PROG_TYPE_LWT_OUT) < 0) + return -1; + } else if (strcmp(*argv, "xmit") == 0) { + NEXT_ARG(); + if (lwt_parse_bpf(rta, len, &argc, &argv, LWT_BPF_XMIT, + BPF_PROG_TYPE_LWT_XMIT) < 0) + return -1; + } else if (strcmp(*argv, "headroom") == 0) { + unsigned int headroom; + + NEXT_ARG(); + if (get_unsigned(&headroom, *argv, 0) || headroom == 0) + invarg("headroom is invalid\n", *argv); + if (!headroom_set) + rta_addattr32(rta, len, LWT_BPF_XMIT_HEADROOM, + headroom); + headroom_set = 1; + } else if (strcmp(*argv, "help") == 0) { + lwt_bpf_usage(); + } else { + break; + } + NEXT_ARG_FWD(); + } + + /* argv is currently the first unparsed argument, + * but the lwt_parse_encap() caller will move to the next, + * so step back + */ + *argcp = argc + 1; + *argvp = argv - 1; + + return 0; +} + +static void lwt_xfrm_usage(void) +{ + fprintf(stderr, "Usage: ip route ... encap xfrm if_id IF_ID [ link_dev LINK ]\n"); + exit(-1); +} + +static int parse_encap_xfrm(struct rtattr *rta, size_t len, + int *argcp, char ***argvp) +{ + int if_id_ok = 0, link_ok = 0; + char **argv = *argvp; + int argc = *argcp; + int ret = 0; + + while (argc > 0) { + if (!strcmp(*argv, "if_id")) { + __u32 if_id; + + NEXT_ARG(); + if (if_id_ok++) + duparg2("if_id", *argv); + if (get_u32(&if_id, *argv, 0) || if_id == 0) + invarg("\"if_id\" value is invalid\n", *argv); + ret = rta_addattr32(rta, len, LWT_XFRM_IF_ID, if_id); + } else if (!strcmp(*argv, "link_dev")) { + int link; + + NEXT_ARG(); + if (link_ok++) + duparg2("link_dev", *argv); + link = ll_name_to_index(*argv); + if (!link) + exit(nodev(*argv)); + ret = rta_addattr32(rta, len, LWT_XFRM_LINK, link); + } else if (!strcmp(*argv, "help")) { + lwt_xfrm_usage(); + } + if (ret) + break; + argc--; argv++; + } + + if (!if_id_ok) + lwt_xfrm_usage(); + + /* argv is currently the first unparsed argument, + * but the lwt_parse_encap() caller will move to the next, + * so step back + */ + *argcp = argc + 1; + *argvp = argv - 1; + + return ret; +} + +int lwt_parse_encap(struct rtattr *rta, size_t len, int *argcp, char ***argvp, + int encap_attr, int encap_type_attr) +{ + struct rtattr *nest; + int argc = *argcp; + char **argv = *argvp; + __u16 type; + int ret = 0; + + NEXT_ARG(); + type = read_encap_type(*argv); + if (!type) + invarg("\"encap type\" value is invalid\n", *argv); + + NEXT_ARG(); + if (argc <= 1) { + fprintf(stderr, + "Error: unexpected end of line after \"encap\"\n"); + exit(-1); + } + + nest = rta_nest(rta, len, encap_attr); + switch (type) { + case LWTUNNEL_ENCAP_MPLS: + ret = parse_encap_mpls(rta, len, &argc, &argv); + break; + case LWTUNNEL_ENCAP_IP: + ret = parse_encap_ip(rta, len, &argc, &argv); + break; + case LWTUNNEL_ENCAP_ILA: + ret = parse_encap_ila(rta, len, &argc, &argv); + break; + case LWTUNNEL_ENCAP_IP6: + ret = parse_encap_ip6(rta, len, &argc, &argv); + break; + case LWTUNNEL_ENCAP_BPF: + if (parse_encap_bpf(rta, len, &argc, &argv) < 0) + exit(-1); + break; + case LWTUNNEL_ENCAP_SEG6: + ret = parse_encap_seg6(rta, len, &argc, &argv); + break; + case LWTUNNEL_ENCAP_SEG6_LOCAL: + ret = parse_encap_seg6local(rta, len, &argc, &argv); + break; + case LWTUNNEL_ENCAP_RPL: + ret = parse_encap_rpl(rta, len, &argc, &argv); + break; + case LWTUNNEL_ENCAP_IOAM6: + ret = parse_encap_ioam6(rta, len, &argc, &argv); + break; + case LWTUNNEL_ENCAP_XFRM: + ret = parse_encap_xfrm(rta, len, &argc, &argv); + break; + default: + fprintf(stderr, "Error: unsupported encap type\n"); + break; + } + if (ret) + return ret; + + rta_nest_end(rta, nest); + + ret = rta_addattr16(rta, len, encap_type_attr, type); + + *argcp = argc; + *argvp = argv; + + return ret; +} |