4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Original Author: James Chapman <jchapman@katalix.com>
18 #include <sys/types.h>
19 #include <sys/socket.h>
20 #include <arpa/inet.h>
21 #include <sys/ioctl.h>
23 #include <linux/if_arp.h>
26 #include <linux/genetlink.h>
27 #include <linux/l2tp.h>
31 #include "ip_common.h"
42 uint32_t peer_tunnel_id
;
44 uint32_t peer_session_id
;
45 enum l2tp_encap_type encap
;
46 uint16_t local_udp_port
;
47 uint16_t peer_udp_port
;
51 uint8_t peer_cookie
[8];
56 unsigned int udp6_csum_tx
:1;
57 unsigned int udp6_csum_rx
:1;
58 unsigned int udp_csum
:1;
59 unsigned int recv_seq
:1;
60 unsigned int send_seq
:1;
61 unsigned int tunnel
:1;
62 unsigned int session
:1;
70 uint64_t data_rx_packets
;
71 uint64_t data_rx_bytes
;
72 uint64_t data_rx_errors
;
73 uint64_t data_rx_oos_packets
;
74 uint64_t data_rx_oos_discards
;
75 uint64_t data_tx_packets
;
76 uint64_t data_tx_bytes
;
77 uint64_t data_tx_errors
;
81 struct l2tp_parm config
;
82 struct l2tp_stats stats
;
86 static struct rtnl_handle genl_rth
;
87 static int genl_family
= -1;
89 /*****************************************************************************
91 *****************************************************************************/
93 static int create_tunnel(struct l2tp_parm
*p
)
95 uint32_t local_attr
= L2TP_ATTR_IP_SADDR
;
96 uint32_t peer_attr
= L2TP_ATTR_IP_DADDR
;
98 GENL_REQUEST(req
, 1024, genl_family
, 0, L2TP_GENL_VERSION
,
99 L2TP_CMD_TUNNEL_CREATE
, NLM_F_REQUEST
| NLM_F_ACK
);
101 addattr32(&req
.n
, 1024, L2TP_ATTR_CONN_ID
, p
->tunnel_id
);
102 addattr32(&req
.n
, 1024, L2TP_ATTR_PEER_CONN_ID
, p
->peer_tunnel_id
);
103 addattr8(&req
.n
, 1024, L2TP_ATTR_PROTO_VERSION
, 3);
104 addattr16(&req
.n
, 1024, L2TP_ATTR_ENCAP_TYPE
, p
->encap
);
106 if (p
->local_ip
.family
== AF_INET6
)
107 local_attr
= L2TP_ATTR_IP6_SADDR
;
108 addattr_l(&req
.n
, 1024, local_attr
, &p
->local_ip
.data
,
109 p
->local_ip
.bytelen
);
111 if (p
->peer_ip
.family
== AF_INET6
)
112 peer_attr
= L2TP_ATTR_IP6_DADDR
;
113 addattr_l(&req
.n
, 1024, peer_attr
, &p
->peer_ip
.data
,
116 if (p
->encap
== L2TP_ENCAPTYPE_UDP
) {
117 addattr16(&req
.n
, 1024, L2TP_ATTR_UDP_SPORT
, p
->local_udp_port
);
118 addattr16(&req
.n
, 1024, L2TP_ATTR_UDP_DPORT
, p
->peer_udp_port
);
120 addattr8(&req
.n
, 1024, L2TP_ATTR_UDP_CSUM
, 1);
121 if (!p
->udp6_csum_tx
)
122 addattr(&req
.n
, 1024, L2TP_ATTR_UDP_ZERO_CSUM6_TX
);
123 if (!p
->udp6_csum_rx
)
124 addattr(&req
.n
, 1024, L2TP_ATTR_UDP_ZERO_CSUM6_RX
);
127 if (rtnl_talk(&genl_rth
, &req
.n
, NULL
) < 0)
133 static int delete_tunnel(struct l2tp_parm
*p
)
135 GENL_REQUEST(req
, 128, genl_family
, 0, L2TP_GENL_VERSION
,
136 L2TP_CMD_TUNNEL_DELETE
, NLM_F_REQUEST
| NLM_F_ACK
);
138 addattr32(&req
.n
, 128, L2TP_ATTR_CONN_ID
, p
->tunnel_id
);
140 if (rtnl_talk(&genl_rth
, &req
.n
, NULL
) < 0)
146 static int create_session(struct l2tp_parm
*p
)
148 GENL_REQUEST(req
, 1024, genl_family
, 0, L2TP_GENL_VERSION
,
149 L2TP_CMD_SESSION_CREATE
, NLM_F_REQUEST
| NLM_F_ACK
);
151 addattr32(&req
.n
, 1024, L2TP_ATTR_CONN_ID
, p
->tunnel_id
);
152 addattr32(&req
.n
, 1024, L2TP_ATTR_PEER_CONN_ID
, p
->peer_tunnel_id
);
153 addattr32(&req
.n
, 1024, L2TP_ATTR_SESSION_ID
, p
->session_id
);
154 addattr32(&req
.n
, 1024, L2TP_ATTR_PEER_SESSION_ID
, p
->peer_session_id
);
155 addattr16(&req
.n
, 1024, L2TP_ATTR_PW_TYPE
, p
->pw_type
);
156 addattr8(&req
.n
, 1024, L2TP_ATTR_L2SPEC_TYPE
, p
->l2spec_type
);
157 addattr8(&req
.n
, 1024, L2TP_ATTR_L2SPEC_LEN
, p
->l2spec_len
);
160 addattr8(&req
.n
, 1024, L2TP_ATTR_RECV_SEQ
, 1);
162 addattr8(&req
.n
, 1024, L2TP_ATTR_SEND_SEQ
, 1);
163 if (p
->reorder_timeout
)
164 addattr64(&req
.n
, 1024, L2TP_ATTR_RECV_TIMEOUT
,
167 addattr_l(&req
.n
, 1024, L2TP_ATTR_COOKIE
,
168 p
->cookie
, p
->cookie_len
);
169 if (p
->peer_cookie_len
)
170 addattr_l(&req
.n
, 1024, L2TP_ATTR_PEER_COOKIE
,
171 p
->peer_cookie
, p
->peer_cookie_len
);
173 addattrstrz(&req
.n
, 1024, L2TP_ATTR_IFNAME
, p
->ifname
);
175 if (rtnl_talk(&genl_rth
, &req
.n
, NULL
) < 0)
181 static int delete_session(struct l2tp_parm
*p
)
183 GENL_REQUEST(req
, 1024, genl_family
, 0, L2TP_GENL_VERSION
,
184 L2TP_CMD_SESSION_DELETE
, NLM_F_REQUEST
| NLM_F_ACK
);
186 addattr32(&req
.n
, 1024, L2TP_ATTR_CONN_ID
, p
->tunnel_id
);
187 addattr32(&req
.n
, 1024, L2TP_ATTR_SESSION_ID
, p
->session_id
);
188 if (rtnl_talk(&genl_rth
, &req
.n
, NULL
) < 0)
194 static void print_cookie(const char *name
, const char *fmt
,
195 const uint8_t *cookie
, int len
)
200 n
= snprintf(abuf
, sizeof(abuf
),
202 cookie
[0], cookie
[1], cookie
[2], cookie
[3]);
204 snprintf(abuf
+ n
, sizeof(abuf
) - n
,
206 cookie
[4], cookie
[5],
207 cookie
[6], cookie
[7]);
209 print_string(PRINT_ANY
, name
, fmt
, abuf
);
212 static void print_tunnel(const struct l2tp_data
*data
)
214 const struct l2tp_parm
*p
= &data
->config
;
215 char buf
[INET6_ADDRSTRLEN
];
217 open_json_object(NULL
);
218 print_uint(PRINT_ANY
, "tunnel_id", "Tunnel %u,", p
->tunnel_id
);
219 print_string(PRINT_ANY
, "encap", " encap %s",
220 p
->encap
== L2TP_ENCAPTYPE_UDP
? "UDP" :
221 p
->encap
== L2TP_ENCAPTYPE_IP
? "IP" : "??");
224 print_string(PRINT_ANY
, "local", " From %s ",
225 inet_ntop(p
->local_ip
.family
, p
->local_ip
.data
,
227 print_string(PRINT_ANY
, "peer", "to %s",
228 inet_ntop(p
->peer_ip
.family
, p
->peer_ip
.data
,
232 print_uint(PRINT_ANY
, "peer_tunnel", " Peer tunnel %u",
236 if (p
->encap
== L2TP_ENCAPTYPE_UDP
) {
237 print_string(PRINT_FP
, NULL
,
238 " UDP source / dest ports:", NULL
);
240 print_hu(PRINT_ANY
, "local_port", " %hu",
242 print_hu(PRINT_ANY
, "peer_port", "/%hu",
246 switch (p
->local_ip
.family
) {
248 print_bool(PRINT_JSON
, "checksum",
250 print_string(PRINT_FP
, NULL
,
251 " UDP checksum: %s\n",
252 p
->udp_csum
? "enabled" : "disabled");
255 if (is_json_context()) {
256 print_bool(PRINT_JSON
, "checksum_tx",
257 NULL
, p
->udp6_csum_tx
);
259 print_bool(PRINT_JSON
, "checksum_rx",
260 NULL
, p
->udp6_csum_tx
);
262 printf(" UDP checksum: %s%s%s%s\n",
263 p
->udp6_csum_tx
&& p
->udp6_csum_rx
265 p
->udp6_csum_tx
&& !p
->udp6_csum_rx
267 !p
->udp6_csum_tx
&& p
->udp6_csum_rx
269 !p
->udp6_csum_tx
&& !p
->udp6_csum_rx
278 static void print_session(struct l2tp_data
*data
)
280 struct l2tp_parm
*p
= &data
->config
;
282 open_json_object(NULL
);
284 print_uint(PRINT_ANY
, "session_id", "Session %u", p
->session_id
);
285 print_uint(PRINT_ANY
, "tunnel_id", " in tunnel %u", p
->tunnel_id
);
288 print_uint(PRINT_ANY
, "peer_session_id",
289 " Peer session %u,", p
->peer_session_id
);
290 print_uint(PRINT_ANY
, "peer_tunnel_id",
291 " tunnel %u", p
->peer_tunnel_id
);
294 if (p
->ifname
!= NULL
) {
295 print_color_string(PRINT_ANY
, COLOR_IFNAME
,
296 "interface", " interface name: %s" , p
->ifname
);
300 /* Show offsets only for plain console output (for legacy scripts) */
301 print_uint(PRINT_FP
, "offset", " offset %u,", 0);
302 print_uint(PRINT_FP
, "peer_offset", " peer offset %u\n", 0);
304 if (p
->cookie_len
> 0)
305 print_cookie("cookie", " cookie %s",
306 p
->cookie
, p
->cookie_len
);
308 if (p
->peer_cookie_len
> 0)
309 print_cookie("peer_cookie", " peer cookie %s",
310 p
->peer_cookie
, p
->peer_cookie_len
);
312 if (p
->reorder_timeout
!= 0)
313 print_uint(PRINT_ANY
, "reorder_timeout",
314 " reorder timeout: %u", p
->reorder_timeout
);
317 if (p
->send_seq
|| p
->recv_seq
) {
318 print_string(PRINT_FP
, NULL
, "%s sequence numbering:", _SL_
);
321 print_null(PRINT_ANY
, "send_seq", " send", NULL
);
323 print_null(PRINT_ANY
, "recv_seq", " recv", NULL
);
326 print_string(PRINT_FP
, NULL
, "\n", NULL
);
330 static int get_response(struct nlmsghdr
*n
, void *arg
)
332 struct genlmsghdr
*ghdr
;
333 struct l2tp_data
*data
= arg
;
334 struct l2tp_parm
*p
= &data
->config
;
335 struct rtattr
*attrs
[L2TP_ATTR_MAX
+ 1];
336 struct rtattr
*nla_stats
, *rta
;
339 /* Validate message and parse attributes */
340 if (n
->nlmsg_type
== NLMSG_ERROR
)
343 ghdr
= NLMSG_DATA(n
);
344 len
= n
->nlmsg_len
- NLMSG_LENGTH(sizeof(*ghdr
));
348 parse_rtattr(attrs
, L2TP_ATTR_MAX
, (void *)ghdr
+ GENL_HDRLEN
, len
);
350 if (attrs
[L2TP_ATTR_PW_TYPE
])
351 p
->pw_type
= rta_getattr_u16(attrs
[L2TP_ATTR_PW_TYPE
]);
352 if (attrs
[L2TP_ATTR_ENCAP_TYPE
])
353 p
->encap
= rta_getattr_u16(attrs
[L2TP_ATTR_ENCAP_TYPE
]);
354 if (attrs
[L2TP_ATTR_CONN_ID
])
355 p
->tunnel_id
= rta_getattr_u32(attrs
[L2TP_ATTR_CONN_ID
]);
356 if (attrs
[L2TP_ATTR_PEER_CONN_ID
])
357 p
->peer_tunnel_id
= rta_getattr_u32(attrs
[L2TP_ATTR_PEER_CONN_ID
]);
358 if (attrs
[L2TP_ATTR_SESSION_ID
])
359 p
->session_id
= rta_getattr_u32(attrs
[L2TP_ATTR_SESSION_ID
]);
360 if (attrs
[L2TP_ATTR_PEER_SESSION_ID
])
361 p
->peer_session_id
= rta_getattr_u32(attrs
[L2TP_ATTR_PEER_SESSION_ID
]);
362 if (attrs
[L2TP_ATTR_L2SPEC_TYPE
])
363 p
->l2spec_type
= rta_getattr_u8(attrs
[L2TP_ATTR_L2SPEC_TYPE
]);
364 if (attrs
[L2TP_ATTR_L2SPEC_LEN
])
365 p
->l2spec_len
= rta_getattr_u8(attrs
[L2TP_ATTR_L2SPEC_LEN
]);
367 if (attrs
[L2TP_ATTR_UDP_CSUM
])
368 p
->udp_csum
= !!rta_getattr_u8(attrs
[L2TP_ATTR_UDP_CSUM
]);
370 p
->udp6_csum_tx
= !attrs
[L2TP_ATTR_UDP_ZERO_CSUM6_TX
];
371 p
->udp6_csum_rx
= !attrs
[L2TP_ATTR_UDP_ZERO_CSUM6_RX
];
373 if (attrs
[L2TP_ATTR_COOKIE
])
374 memcpy(p
->cookie
, RTA_DATA(attrs
[L2TP_ATTR_COOKIE
]),
375 p
->cookie_len
= RTA_PAYLOAD(attrs
[L2TP_ATTR_COOKIE
]));
377 if (attrs
[L2TP_ATTR_PEER_COOKIE
])
378 memcpy(p
->peer_cookie
, RTA_DATA(attrs
[L2TP_ATTR_PEER_COOKIE
]),
379 p
->peer_cookie_len
= RTA_PAYLOAD(attrs
[L2TP_ATTR_PEER_COOKIE
]));
381 if (attrs
[L2TP_ATTR_RECV_SEQ
])
382 p
->recv_seq
= !!rta_getattr_u8(attrs
[L2TP_ATTR_RECV_SEQ
]);
383 if (attrs
[L2TP_ATTR_SEND_SEQ
])
384 p
->send_seq
= !!rta_getattr_u8(attrs
[L2TP_ATTR_SEND_SEQ
]);
386 if (attrs
[L2TP_ATTR_RECV_TIMEOUT
])
387 p
->reorder_timeout
= rta_getattr_u64(attrs
[L2TP_ATTR_RECV_TIMEOUT
]);
389 rta
= attrs
[L2TP_ATTR_IP_SADDR
];
390 p
->local_ip
.family
= AF_INET
;
392 rta
= attrs
[L2TP_ATTR_IP6_SADDR
];
393 p
->local_ip
.family
= AF_INET6
;
395 if (rta
&& get_addr_rta(&p
->local_ip
, rta
, p
->local_ip
.family
))
398 rta
= attrs
[L2TP_ATTR_IP_DADDR
];
399 p
->peer_ip
.family
= AF_INET
;
401 rta
= attrs
[L2TP_ATTR_IP6_DADDR
];
402 p
->peer_ip
.family
= AF_INET6
;
404 if (rta
&& get_addr_rta(&p
->peer_ip
, rta
, p
->peer_ip
.family
))
407 if (attrs
[L2TP_ATTR_UDP_SPORT
])
408 p
->local_udp_port
= rta_getattr_u16(attrs
[L2TP_ATTR_UDP_SPORT
]);
409 if (attrs
[L2TP_ATTR_UDP_DPORT
])
410 p
->peer_udp_port
= rta_getattr_u16(attrs
[L2TP_ATTR_UDP_DPORT
]);
411 if (attrs
[L2TP_ATTR_IFNAME
])
412 p
->ifname
= rta_getattr_str(attrs
[L2TP_ATTR_IFNAME
]);
414 nla_stats
= attrs
[L2TP_ATTR_STATS
];
416 struct rtattr
*tb
[L2TP_ATTR_STATS_MAX
+ 1];
418 parse_rtattr_nested(tb
, L2TP_ATTR_STATS_MAX
, nla_stats
);
420 if (tb
[L2TP_ATTR_TX_PACKETS
])
421 data
->stats
.data_tx_packets
= rta_getattr_u64(tb
[L2TP_ATTR_TX_PACKETS
]);
422 if (tb
[L2TP_ATTR_TX_BYTES
])
423 data
->stats
.data_tx_bytes
= rta_getattr_u64(tb
[L2TP_ATTR_TX_BYTES
]);
424 if (tb
[L2TP_ATTR_TX_ERRORS
])
425 data
->stats
.data_tx_errors
= rta_getattr_u64(tb
[L2TP_ATTR_TX_ERRORS
]);
426 if (tb
[L2TP_ATTR_RX_PACKETS
])
427 data
->stats
.data_rx_packets
= rta_getattr_u64(tb
[L2TP_ATTR_RX_PACKETS
]);
428 if (tb
[L2TP_ATTR_RX_BYTES
])
429 data
->stats
.data_rx_bytes
= rta_getattr_u64(tb
[L2TP_ATTR_RX_BYTES
]);
430 if (tb
[L2TP_ATTR_RX_ERRORS
])
431 data
->stats
.data_rx_errors
= rta_getattr_u64(tb
[L2TP_ATTR_RX_ERRORS
]);
432 if (tb
[L2TP_ATTR_RX_SEQ_DISCARDS
])
433 data
->stats
.data_rx_oos_discards
= rta_getattr_u64(tb
[L2TP_ATTR_RX_SEQ_DISCARDS
]);
434 if (tb
[L2TP_ATTR_RX_OOS_PACKETS
])
435 data
->stats
.data_rx_oos_packets
= rta_getattr_u64(tb
[L2TP_ATTR_RX_OOS_PACKETS
]);
441 static int session_nlmsg(struct nlmsghdr
*n
, void *arg
)
443 int ret
= get_response(n
, arg
);
451 static int get_session(struct l2tp_data
*p
)
453 GENL_REQUEST(req
, 128, genl_family
, 0, L2TP_GENL_VERSION
,
454 L2TP_CMD_SESSION_GET
,
455 NLM_F_ROOT
| NLM_F_MATCH
| NLM_F_REQUEST
);
457 req
.n
.nlmsg_seq
= genl_rth
.dump
= ++genl_rth
.seq
;
459 if (p
->config
.tunnel_id
&& p
->config
.session_id
) {
460 addattr32(&req
.n
, 128, L2TP_ATTR_CONN_ID
, p
->config
.tunnel_id
);
461 addattr32(&req
.n
, 128, L2TP_ATTR_SESSION_ID
,
462 p
->config
.session_id
);
465 if (rtnl_send(&genl_rth
, &req
, req
.n
.nlmsg_len
) < 0)
469 if (rtnl_dump_filter(&genl_rth
, session_nlmsg
, p
) < 0) {
470 fprintf(stderr
, "Dump terminated\n");
479 static int tunnel_nlmsg(struct nlmsghdr
*n
, void *arg
)
481 int ret
= get_response(n
, arg
);
489 static int get_tunnel(struct l2tp_data
*p
)
491 GENL_REQUEST(req
, 1024, genl_family
, 0, L2TP_GENL_VERSION
,
493 NLM_F_ROOT
| NLM_F_MATCH
| NLM_F_REQUEST
);
495 req
.n
.nlmsg_seq
= genl_rth
.dump
= ++genl_rth
.seq
;
497 if (p
->config
.tunnel_id
)
498 addattr32(&req
.n
, 1024, L2TP_ATTR_CONN_ID
, p
->config
.tunnel_id
);
500 if (rtnl_send(&genl_rth
, &req
, req
.n
.nlmsg_len
) < 0)
504 if (rtnl_dump_filter(&genl_rth
, tunnel_nlmsg
, p
) < 0) {
505 fprintf(stderr
, "Dump terminated\n");
514 /*****************************************************************************
516 *****************************************************************************/
518 static void usage(void) __attribute__((noreturn
));
520 static void usage(void)
522 fprintf(stderr
, "Usage: ip l2tp add tunnel\n"
523 " remote ADDR local ADDR\n"
524 " tunnel_id ID peer_tunnel_id ID\n"
525 " [ encap { ip | udp } ]\n"
526 " [ udp_sport PORT ] [ udp_dport PORT ]\n"
527 " [ udp_csum { on | off } ]\n"
528 " [ udp6_csum_tx { on | off } ]\n"
529 " [ udp6_csum_rx { on | off } ]\n"
530 "Usage: ip l2tp add session [ name NAME ]\n"
532 " session_id ID peer_session_id ID\n"
533 " [ cookie HEXSTR ] [ peer_cookie HEXSTR ]\n"
534 " [ seq { none | send | recv | both } ]\n"
535 " [ l2spec_type L2SPEC ]\n"
536 " ip l2tp del tunnel tunnel_id ID\n"
537 " ip l2tp del session tunnel_id ID session_id ID\n"
538 " ip l2tp show tunnel [ tunnel_id ID ]\n"
539 " ip l2tp show session [ tunnel_id ID ] [ session_id ID ]\n"
541 "Where: NAME := STRING\n"
542 " ADDR := { IP_ADDRESS | any }\n"
543 " PORT := { 0..65535 }\n"
544 " ID := { 1..4294967295 }\n"
545 " HEXSTR := { 8 or 16 hex digits (4 / 8 bytes) }\n"
546 " L2SPEC := { none | default }\n");
551 static int parse_args(int argc
, char **argv
, int cmd
, struct l2tp_parm
*p
)
553 memset(p
, 0, sizeof(*p
));
559 p
->l2spec_type
= L2TP_L2SPECTYPE_DEFAULT
;
565 if (strcmp(*argv
, "encap") == 0) {
567 if (strcmp(*argv
, "ip") == 0) {
568 p
->encap
= L2TP_ENCAPTYPE_IP
;
569 } else if (strcmp(*argv
, "udp") == 0) {
570 p
->encap
= L2TP_ENCAPTYPE_UDP
;
572 fprintf(stderr
, "Unknown tunnel encapsulation \"%s\"\n", *argv
);
575 } else if (strcmp(*argv
, "name") == 0) {
577 if (check_ifname(*argv
))
578 invarg("\"name\" not a valid ifname", *argv
);
580 } else if (strcmp(*argv
, "remote") == 0) {
582 if (get_addr(&p
->peer_ip
, *argv
, AF_UNSPEC
))
583 invarg("invalid remote address\n", *argv
);
584 } else if (strcmp(*argv
, "local") == 0) {
586 if (get_addr(&p
->local_ip
, *argv
, AF_UNSPEC
))
587 invarg("invalid local address\n", *argv
);
588 } else if ((strcmp(*argv
, "tunnel_id") == 0) ||
589 (strcmp(*argv
, "tid") == 0)) {
593 if (get_u32(&uval
, *argv
, 0))
594 invarg("invalid ID\n", *argv
);
596 } else if ((strcmp(*argv
, "peer_tunnel_id") == 0) ||
597 (strcmp(*argv
, "ptid") == 0)) {
601 if (get_u32(&uval
, *argv
, 0))
602 invarg("invalid ID\n", *argv
);
603 p
->peer_tunnel_id
= uval
;
604 } else if ((strcmp(*argv
, "session_id") == 0) ||
605 (strcmp(*argv
, "sid") == 0)) {
609 if (get_u32(&uval
, *argv
, 0))
610 invarg("invalid ID\n", *argv
);
611 p
->session_id
= uval
;
612 } else if ((strcmp(*argv
, "peer_session_id") == 0) ||
613 (strcmp(*argv
, "psid") == 0)) {
617 if (get_u32(&uval
, *argv
, 0))
618 invarg("invalid ID\n", *argv
);
619 p
->peer_session_id
= uval
;
620 } else if (strcmp(*argv
, "udp_sport") == 0) {
624 if (get_u16(&uval
, *argv
, 0))
625 invarg("invalid port\n", *argv
);
626 p
->local_udp_port
= uval
;
627 } else if (strcmp(*argv
, "udp_dport") == 0) {
631 if (get_u16(&uval
, *argv
, 0))
632 invarg("invalid port\n", *argv
);
633 p
->peer_udp_port
= uval
;
634 } else if (strcmp(*argv
, "udp_csum") == 0) {
636 if (strcmp(*argv
, "on") == 0)
638 else if (strcmp(*argv
, "off") == 0)
641 invarg("invalid option for udp_csum\n", *argv
);
642 } else if (strcmp(*argv
, "udp6_csum_rx") == 0) {
644 if (strcmp(*argv
, "on") == 0)
646 else if (strcmp(*argv
, "off") == 0)
649 invarg("invalid option for udp6_csum_rx\n"
651 } else if (strcmp(*argv
, "udp6_csum_tx") == 0) {
653 if (strcmp(*argv
, "on") == 0)
655 else if (strcmp(*argv
, "off") == 0)
658 invarg("invalid option for udp6_csum_tx\n"
660 } else if (strcmp(*argv
, "offset") == 0) {
661 fprintf(stderr
, "Ignoring option \"offset\"\n");
663 } else if (strcmp(*argv
, "peer_offset") == 0) {
664 fprintf(stderr
, "Ignoring option \"peer_offset\"\n");
666 } else if (strcmp(*argv
, "cookie") == 0) {
670 slen
= strlen(*argv
);
671 if ((slen
!= 8) && (slen
!= 16))
672 invarg("cookie must be either 8 or 16 hex digits\n", *argv
);
674 p
->cookie_len
= slen
/ 2;
675 if (hex2mem(*argv
, p
->cookie
, p
->cookie_len
) < 0)
676 invarg("cookie must be a hex string\n", *argv
);
677 } else if (strcmp(*argv
, "peer_cookie") == 0) {
681 slen
= strlen(*argv
);
682 if ((slen
!= 8) && (slen
!= 16))
683 invarg("cookie must be either 8 or 16 hex digits\n", *argv
);
685 p
->peer_cookie_len
= slen
/ 2;
686 if (hex2mem(*argv
, p
->peer_cookie
, p
->peer_cookie_len
) < 0)
687 invarg("cookie must be a hex string\n", *argv
);
688 } else if (strcmp(*argv
, "l2spec_type") == 0) {
690 if (strcasecmp(*argv
, "default") == 0) {
691 p
->l2spec_type
= L2TP_L2SPECTYPE_DEFAULT
;
693 } else if (strcasecmp(*argv
, "none") == 0) {
694 p
->l2spec_type
= L2TP_L2SPECTYPE_NONE
;
698 "Unknown layer2specific header type \"%s\"\n",
702 } else if (strcmp(*argv
, "seq") == 0) {
704 if (strcasecmp(*argv
, "both") == 0) {
707 } else if (strcasecmp(*argv
, "recv") == 0) {
709 } else if (strcasecmp(*argv
, "send") == 0) {
711 } else if (strcasecmp(*argv
, "none") == 0) {
716 "Unknown seq value \"%s\"\n", *argv
);
719 } else if (strcmp(*argv
, "tunnel") == 0) {
721 } else if (strcmp(*argv
, "session") == 0) {
723 } else if (matches(*argv
, "help") == 0) {
726 fprintf(stderr
, "Unknown command: %s\n", *argv
);
737 static int do_add(int argc
, char **argv
)
742 if (parse_args(argc
, argv
, L2TP_ADD
, &p
) < 0)
745 if (!p
.tunnel
&& !p
.session
)
746 missarg("tunnel or session");
748 if (p
.tunnel_id
== 0)
749 missarg("tunnel_id");
751 /* session_id and peer_session_id must be provided for sessions */
752 if ((p
.session
) && (p
.peer_session_id
== 0))
753 missarg("peer_session_id");
754 if ((p
.session
) && (p
.session_id
== 0))
755 missarg("session_id");
757 /* peer_tunnel_id is needed for tunnels */
758 if ((p
.tunnel
) && (p
.peer_tunnel_id
== 0))
759 missarg("peer_tunnel_id");
762 if (p
.local_ip
.family
== AF_UNSPEC
)
765 if (p
.peer_ip
.family
== AF_UNSPEC
)
768 if (p
.encap
== L2TP_ENCAPTYPE_UDP
) {
769 if (p
.local_udp_port
== 0)
770 missarg("udp_sport");
771 if (p
.peer_udp_port
== 0)
772 missarg("udp_dport");
775 ret
= create_tunnel(&p
);
779 /* Only ethernet pseudowires supported */
780 p
.pw_type
= L2TP_PWTYPE_ETH
;
782 ret
= create_session(&p
);
788 static int do_del(int argc
, char **argv
)
792 if (parse_args(argc
, argv
, L2TP_DEL
, &p
) < 0)
795 if (!p
.tunnel
&& !p
.session
)
796 missarg("tunnel or session");
798 if ((p
.tunnel
) && (p
.tunnel_id
== 0))
799 missarg("tunnel_id");
800 if ((p
.session
) && (p
.session_id
== 0))
801 missarg("session_id");
804 return delete_session(&p
);
806 return delete_tunnel(&p
);
811 static int do_show(int argc
, char **argv
)
813 struct l2tp_data data
;
814 struct l2tp_parm
*p
= &data
.config
;
816 if (parse_args(argc
, argv
, L2TP_GET
, p
) < 0)
819 if (!p
->tunnel
&& !p
->session
)
820 missarg("tunnel or session");
830 int do_ipl2tp(int argc
, char **argv
)
832 if (argc
< 1 || !matches(*argv
, "help"))
835 if (genl_init_handle(&genl_rth
, L2TP_GENL_NAME
, &genl_family
))
838 if (matches(*argv
, "add") == 0)
839 return do_add(argc
-1, argv
+1);
840 if (matches(*argv
, "delete") == 0)
841 return do_del(argc
-1, argv
+1);
842 if (matches(*argv
, "show") == 0 ||
843 matches(*argv
, "lst") == 0 ||
844 matches(*argv
, "list") == 0)
845 return do_show(argc
-1, argv
+1);
848 "Command \"%s\" is unknown, try \"ip l2tp help\".\n", *argv
);