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
;
47 enum l2tp_encap_type encap
;
48 uint16_t local_udp_port
;
49 uint16_t peer_udp_port
;
53 uint8_t peer_cookie
[8];
59 unsigned int udp6_csum_tx
:1;
60 unsigned int udp6_csum_rx
:1;
61 unsigned int udp_csum
:1;
62 unsigned int recv_seq
:1;
63 unsigned int send_seq
:1;
64 unsigned int lns_mode
:1;
65 unsigned int data_seq
:2;
66 unsigned int tunnel
:1;
67 unsigned int session
:1;
75 uint64_t data_rx_packets
;
76 uint64_t data_rx_bytes
;
77 uint64_t data_rx_errors
;
78 uint64_t data_rx_oos_packets
;
79 uint64_t data_rx_oos_discards
;
80 uint64_t data_tx_packets
;
81 uint64_t data_tx_bytes
;
82 uint64_t data_tx_errors
;
86 struct l2tp_parm config
;
87 struct l2tp_stats stats
;
91 static struct rtnl_handle genl_rth
;
92 static int genl_family
= -1;
94 /*****************************************************************************
96 *****************************************************************************/
98 static int create_tunnel(struct l2tp_parm
*p
)
100 uint32_t local_attr
= L2TP_ATTR_IP_SADDR
;
101 uint32_t peer_attr
= L2TP_ATTR_IP_DADDR
;
103 GENL_REQUEST(req
, 1024, genl_family
, 0, L2TP_GENL_VERSION
,
104 L2TP_CMD_TUNNEL_CREATE
, NLM_F_REQUEST
| NLM_F_ACK
);
106 addattr32(&req
.n
, 1024, L2TP_ATTR_CONN_ID
, p
->tunnel_id
);
107 addattr32(&req
.n
, 1024, L2TP_ATTR_PEER_CONN_ID
, p
->peer_tunnel_id
);
108 addattr8(&req
.n
, 1024, L2TP_ATTR_PROTO_VERSION
, 3);
109 addattr16(&req
.n
, 1024, L2TP_ATTR_ENCAP_TYPE
, p
->encap
);
111 if (p
->local_ip
.family
== AF_INET6
)
112 local_attr
= L2TP_ATTR_IP6_SADDR
;
113 addattr_l(&req
.n
, 1024, local_attr
, &p
->local_ip
.data
,
114 p
->local_ip
.bytelen
);
116 if (p
->peer_ip
.family
== AF_INET6
)
117 peer_attr
= L2TP_ATTR_IP6_DADDR
;
118 addattr_l(&req
.n
, 1024, peer_attr
, &p
->peer_ip
.data
,
121 if (p
->encap
== L2TP_ENCAPTYPE_UDP
) {
122 addattr16(&req
.n
, 1024, L2TP_ATTR_UDP_SPORT
, p
->local_udp_port
);
123 addattr16(&req
.n
, 1024, L2TP_ATTR_UDP_DPORT
, p
->peer_udp_port
);
125 addattr8(&req
.n
, 1024, L2TP_ATTR_UDP_CSUM
, 1);
126 if (!p
->udp6_csum_tx
)
127 addattr(&req
.n
, 1024, L2TP_ATTR_UDP_ZERO_CSUM6_TX
);
128 if (!p
->udp6_csum_rx
)
129 addattr(&req
.n
, 1024, L2TP_ATTR_UDP_ZERO_CSUM6_RX
);
132 if (rtnl_talk(&genl_rth
, &req
.n
, NULL
) < 0)
138 static int delete_tunnel(struct l2tp_parm
*p
)
140 GENL_REQUEST(req
, 128, genl_family
, 0, L2TP_GENL_VERSION
,
141 L2TP_CMD_TUNNEL_DELETE
, NLM_F_REQUEST
| NLM_F_ACK
);
143 addattr32(&req
.n
, 128, L2TP_ATTR_CONN_ID
, p
->tunnel_id
);
145 if (rtnl_talk(&genl_rth
, &req
.n
, NULL
) < 0)
151 static int create_session(struct l2tp_parm
*p
)
153 GENL_REQUEST(req
, 1024, genl_family
, 0, L2TP_GENL_VERSION
,
154 L2TP_CMD_SESSION_CREATE
, NLM_F_REQUEST
| NLM_F_ACK
);
156 addattr32(&req
.n
, 1024, L2TP_ATTR_CONN_ID
, p
->tunnel_id
);
157 addattr32(&req
.n
, 1024, L2TP_ATTR_PEER_CONN_ID
, p
->peer_tunnel_id
);
158 addattr32(&req
.n
, 1024, L2TP_ATTR_SESSION_ID
, p
->session_id
);
159 addattr32(&req
.n
, 1024, L2TP_ATTR_PEER_SESSION_ID
, p
->peer_session_id
);
160 addattr16(&req
.n
, 1024, L2TP_ATTR_PW_TYPE
, p
->pw_type
);
161 addattr8(&req
.n
, 1024, L2TP_ATTR_L2SPEC_TYPE
, p
->l2spec_type
);
162 addattr8(&req
.n
, 1024, L2TP_ATTR_L2SPEC_LEN
, p
->l2spec_len
);
165 addattr16(&req
.n
, 1024, L2TP_ATTR_MTU
, p
->mtu
);
167 addattr8(&req
.n
, 1024, L2TP_ATTR_RECV_SEQ
, 1);
169 addattr8(&req
.n
, 1024, L2TP_ATTR_SEND_SEQ
, 1);
171 addattr(&req
.n
, 1024, L2TP_ATTR_LNS_MODE
);
173 addattr8(&req
.n
, 1024, L2TP_ATTR_DATA_SEQ
, p
->data_seq
);
174 if (p
->reorder_timeout
)
175 addattr64(&req
.n
, 1024, L2TP_ATTR_RECV_TIMEOUT
,
178 addattr16(&req
.n
, 1024, L2TP_ATTR_OFFSET
, p
->offset
);
180 addattr_l(&req
.n
, 1024, L2TP_ATTR_COOKIE
,
181 p
->cookie
, p
->cookie_len
);
182 if (p
->peer_cookie_len
)
183 addattr_l(&req
.n
, 1024, L2TP_ATTR_PEER_COOKIE
,
184 p
->peer_cookie
, p
->peer_cookie_len
);
186 addattrstrz(&req
.n
, 1024, L2TP_ATTR_IFNAME
, p
->ifname
);
188 if (rtnl_talk(&genl_rth
, &req
.n
, NULL
) < 0)
194 static int delete_session(struct l2tp_parm
*p
)
196 GENL_REQUEST(req
, 1024, genl_family
, 0, L2TP_GENL_VERSION
,
197 L2TP_CMD_SESSION_DELETE
, NLM_F_REQUEST
| NLM_F_ACK
);
199 addattr32(&req
.n
, 1024, L2TP_ATTR_CONN_ID
, p
->tunnel_id
);
200 addattr32(&req
.n
, 1024, L2TP_ATTR_SESSION_ID
, p
->session_id
);
201 if (rtnl_talk(&genl_rth
, &req
.n
, NULL
) < 0)
207 static void print_cookie(const char *name
, const char *fmt
,
208 const uint8_t *cookie
, int len
)
213 n
= snprintf(abuf
, sizeof(abuf
),
215 cookie
[0], cookie
[1], cookie
[2], cookie
[3]);
217 snprintf(abuf
+ n
, sizeof(abuf
) - n
,
219 cookie
[4], cookie
[5],
220 cookie
[6], cookie
[7]);
222 print_string(PRINT_ANY
, name
, fmt
, abuf
);
225 static void print_tunnel(const struct l2tp_data
*data
)
227 const struct l2tp_parm
*p
= &data
->config
;
228 char buf
[INET6_ADDRSTRLEN
];
230 open_json_object(NULL
);
231 print_uint(PRINT_ANY
, "tunnel_id", "Tunnel %u,", p
->tunnel_id
);
232 print_string(PRINT_ANY
, "encap", " encap %s",
233 p
->encap
== L2TP_ENCAPTYPE_UDP
? "UDP" :
234 p
->encap
== L2TP_ENCAPTYPE_IP
? "IP" : "??");
235 print_string(PRINT_FP
, NULL
, "%s", _SL_
);
237 print_string(PRINT_ANY
, "local", " From %s ",
238 inet_ntop(p
->local_ip
.family
, p
->local_ip
.data
,
240 print_string(PRINT_ANY
, "peer", "to %s",
241 inet_ntop(p
->peer_ip
.family
, p
->peer_ip
.data
,
243 print_string(PRINT_FP
, NULL
, "%s", _SL_
);
245 print_uint(PRINT_ANY
, "peer_tunnel", " Peer tunnel %u",
247 print_string(PRINT_FP
, NULL
, "%s", _SL_
);
249 if (p
->encap
== L2TP_ENCAPTYPE_UDP
) {
250 print_string(PRINT_FP
, NULL
,
251 " UDP source / dest ports:", NULL
);
253 print_uint(PRINT_ANY
, "local_port", " %hu",
255 print_uint(PRINT_ANY
, "peer_port", "/%hu",
257 print_string(PRINT_FP
, NULL
, "%s", _SL_
);
259 switch (p
->local_ip
.family
) {
261 print_bool(PRINT_JSON
, "checksum",
263 print_string(PRINT_FP
, NULL
,
264 " UDP checksum: %s\n",
265 p
->udp_csum
? "enabled" : "disabled");
268 if (is_json_context()) {
269 print_bool(PRINT_JSON
, "checksum_tx",
270 NULL
, p
->udp6_csum_tx
);
272 print_bool(PRINT_JSON
, "checksum_rx",
273 NULL
, p
->udp6_csum_tx
);
275 printf(" UDP checksum: %s%s%s%s\n",
276 p
->udp6_csum_tx
&& p
->udp6_csum_rx
278 p
->udp6_csum_tx
&& !p
->udp6_csum_rx
280 !p
->udp6_csum_tx
&& p
->udp6_csum_rx
282 !p
->udp6_csum_tx
&& !p
->udp6_csum_rx
291 static void print_session(struct l2tp_data
*data
)
293 struct l2tp_parm
*p
= &data
->config
;
295 open_json_object(NULL
);
297 print_uint(PRINT_ANY
, "session_id", "Session %u", p
->session_id
);
298 print_uint(PRINT_ANY
, "tunnel_id", " in tunnel %u", p
->tunnel_id
);
299 print_string(PRINT_FP
, NULL
, "%s", _SL_
);
301 print_uint(PRINT_ANY
, "peer_session_id",
302 " Peer session %u,", p
->peer_session_id
);
303 print_uint(PRINT_ANY
, "peer_tunnel_id",
304 " tunnel %u", p
->peer_tunnel_id
);
305 print_string(PRINT_FP
, NULL
, "%s", _SL_
);
307 if (p
->ifname
!= NULL
) {
308 print_color_string(PRINT_ANY
, COLOR_IFNAME
,
309 "interface", " interface name: %s" , p
->ifname
);
310 print_string(PRINT_FP
, NULL
, "%s", _SL_
);
313 print_uint(PRINT_ANY
, "offset", " offset %u,", p
->offset
);
314 print_uint(PRINT_ANY
, "peer_offset", " peer offset %u\n", p
->peer_offset
);
316 if (p
->cookie_len
> 0)
317 print_cookie("cookie", "cookie",
318 p
->cookie
, p
->cookie_len
);
319 if (p
->peer_cookie_len
> 0)
320 print_cookie("peer_cookie", "peer cookie",
321 p
->peer_cookie
, p
->peer_cookie_len
);
323 if (p
->reorder_timeout
!= 0)
324 print_uint(PRINT_ANY
, "reorder_timeout",
325 " reorder timeout: %u", p
->reorder_timeout
);
328 if (p
->send_seq
|| p
->recv_seq
) {
329 print_string(PRINT_FP
, NULL
, "%s sequence numbering:", _SL_
);
332 print_null(PRINT_ANY
, "send_seq", " send", NULL
);
334 print_null(PRINT_ANY
, "recv_seq", " recv", NULL
);
337 print_string(PRINT_FP
, NULL
, "\n", NULL
);
341 static int get_response(struct nlmsghdr
*n
, void *arg
)
343 struct genlmsghdr
*ghdr
;
344 struct l2tp_data
*data
= arg
;
345 struct l2tp_parm
*p
= &data
->config
;
346 struct rtattr
*attrs
[L2TP_ATTR_MAX
+ 1];
347 struct rtattr
*nla_stats
, *rta
;
350 /* Validate message and parse attributes */
351 if (n
->nlmsg_type
== NLMSG_ERROR
)
354 ghdr
= NLMSG_DATA(n
);
355 len
= n
->nlmsg_len
- NLMSG_LENGTH(sizeof(*ghdr
));
359 parse_rtattr(attrs
, L2TP_ATTR_MAX
, (void *)ghdr
+ GENL_HDRLEN
, len
);
361 if (attrs
[L2TP_ATTR_PW_TYPE
])
362 p
->pw_type
= rta_getattr_u16(attrs
[L2TP_ATTR_PW_TYPE
]);
363 if (attrs
[L2TP_ATTR_ENCAP_TYPE
])
364 p
->encap
= rta_getattr_u16(attrs
[L2TP_ATTR_ENCAP_TYPE
]);
365 if (attrs
[L2TP_ATTR_OFFSET
])
366 p
->offset
= rta_getattr_u16(attrs
[L2TP_ATTR_OFFSET
]);
367 if (attrs
[L2TP_ATTR_DATA_SEQ
])
368 p
->data_seq
= rta_getattr_u16(attrs
[L2TP_ATTR_DATA_SEQ
]);
369 if (attrs
[L2TP_ATTR_CONN_ID
])
370 p
->tunnel_id
= rta_getattr_u32(attrs
[L2TP_ATTR_CONN_ID
]);
371 if (attrs
[L2TP_ATTR_PEER_CONN_ID
])
372 p
->peer_tunnel_id
= rta_getattr_u32(attrs
[L2TP_ATTR_PEER_CONN_ID
]);
373 if (attrs
[L2TP_ATTR_SESSION_ID
])
374 p
->session_id
= rta_getattr_u32(attrs
[L2TP_ATTR_SESSION_ID
]);
375 if (attrs
[L2TP_ATTR_PEER_SESSION_ID
])
376 p
->peer_session_id
= rta_getattr_u32(attrs
[L2TP_ATTR_PEER_SESSION_ID
]);
377 if (attrs
[L2TP_ATTR_L2SPEC_TYPE
])
378 p
->l2spec_type
= rta_getattr_u8(attrs
[L2TP_ATTR_L2SPEC_TYPE
]);
379 if (attrs
[L2TP_ATTR_L2SPEC_LEN
])
380 p
->l2spec_len
= rta_getattr_u8(attrs
[L2TP_ATTR_L2SPEC_LEN
]);
382 if (attrs
[L2TP_ATTR_UDP_CSUM
])
383 p
->udp_csum
= !!rta_getattr_u8(attrs
[L2TP_ATTR_UDP_CSUM
]);
385 p
->udp6_csum_tx
= !attrs
[L2TP_ATTR_UDP_ZERO_CSUM6_TX
];
386 p
->udp6_csum_rx
= !attrs
[L2TP_ATTR_UDP_ZERO_CSUM6_RX
];
388 if (attrs
[L2TP_ATTR_COOKIE
])
389 memcpy(p
->cookie
, RTA_DATA(attrs
[L2TP_ATTR_COOKIE
]),
390 p
->cookie_len
= RTA_PAYLOAD(attrs
[L2TP_ATTR_COOKIE
]));
392 if (attrs
[L2TP_ATTR_PEER_COOKIE
])
393 memcpy(p
->peer_cookie
, RTA_DATA(attrs
[L2TP_ATTR_PEER_COOKIE
]),
394 p
->peer_cookie_len
= RTA_PAYLOAD(attrs
[L2TP_ATTR_PEER_COOKIE
]));
396 if (attrs
[L2TP_ATTR_RECV_SEQ
])
397 p
->recv_seq
= !!rta_getattr_u8(attrs
[L2TP_ATTR_RECV_SEQ
]);
398 if (attrs
[L2TP_ATTR_SEND_SEQ
])
399 p
->send_seq
= !!rta_getattr_u8(attrs
[L2TP_ATTR_SEND_SEQ
]);
401 if (attrs
[L2TP_ATTR_RECV_TIMEOUT
])
402 p
->reorder_timeout
= rta_getattr_u64(attrs
[L2TP_ATTR_RECV_TIMEOUT
]);
404 rta
= attrs
[L2TP_ATTR_IP_SADDR
];
405 p
->local_ip
.family
= AF_INET
;
407 rta
= attrs
[L2TP_ATTR_IP6_SADDR
];
408 p
->local_ip
.family
= AF_INET6
;
410 if (rta
&& get_addr_rta(&p
->local_ip
, rta
, p
->local_ip
.family
))
413 rta
= attrs
[L2TP_ATTR_IP_DADDR
];
414 p
->peer_ip
.family
= AF_INET
;
416 rta
= attrs
[L2TP_ATTR_IP6_DADDR
];
417 p
->peer_ip
.family
= AF_INET6
;
419 if (rta
&& get_addr_rta(&p
->peer_ip
, rta
, p
->peer_ip
.family
))
422 if (attrs
[L2TP_ATTR_UDP_SPORT
])
423 p
->local_udp_port
= rta_getattr_u16(attrs
[L2TP_ATTR_UDP_SPORT
]);
424 if (attrs
[L2TP_ATTR_UDP_DPORT
])
425 p
->peer_udp_port
= rta_getattr_u16(attrs
[L2TP_ATTR_UDP_DPORT
]);
426 if (attrs
[L2TP_ATTR_MTU
])
427 p
->mtu
= rta_getattr_u16(attrs
[L2TP_ATTR_MTU
]);
428 if (attrs
[L2TP_ATTR_IFNAME
])
429 p
->ifname
= rta_getattr_str(attrs
[L2TP_ATTR_IFNAME
]);
431 nla_stats
= attrs
[L2TP_ATTR_STATS
];
433 struct rtattr
*tb
[L2TP_ATTR_STATS_MAX
+ 1];
435 parse_rtattr_nested(tb
, L2TP_ATTR_STATS_MAX
, nla_stats
);
437 if (tb
[L2TP_ATTR_TX_PACKETS
])
438 data
->stats
.data_tx_packets
= rta_getattr_u64(tb
[L2TP_ATTR_TX_PACKETS
]);
439 if (tb
[L2TP_ATTR_TX_BYTES
])
440 data
->stats
.data_tx_bytes
= rta_getattr_u64(tb
[L2TP_ATTR_TX_BYTES
]);
441 if (tb
[L2TP_ATTR_TX_ERRORS
])
442 data
->stats
.data_tx_errors
= rta_getattr_u64(tb
[L2TP_ATTR_TX_ERRORS
]);
443 if (tb
[L2TP_ATTR_RX_PACKETS
])
444 data
->stats
.data_rx_packets
= rta_getattr_u64(tb
[L2TP_ATTR_RX_PACKETS
]);
445 if (tb
[L2TP_ATTR_RX_BYTES
])
446 data
->stats
.data_rx_bytes
= rta_getattr_u64(tb
[L2TP_ATTR_RX_BYTES
]);
447 if (tb
[L2TP_ATTR_RX_ERRORS
])
448 data
->stats
.data_rx_errors
= rta_getattr_u64(tb
[L2TP_ATTR_RX_ERRORS
]);
449 if (tb
[L2TP_ATTR_RX_SEQ_DISCARDS
])
450 data
->stats
.data_rx_oos_discards
= rta_getattr_u64(tb
[L2TP_ATTR_RX_SEQ_DISCARDS
]);
451 if (tb
[L2TP_ATTR_RX_OOS_PACKETS
])
452 data
->stats
.data_rx_oos_packets
= rta_getattr_u64(tb
[L2TP_ATTR_RX_OOS_PACKETS
]);
458 static int session_nlmsg(const struct sockaddr_nl
*who
,
459 struct nlmsghdr
*n
, void *arg
)
461 int ret
= get_response(n
, arg
);
469 static int get_session(struct l2tp_data
*p
)
471 GENL_REQUEST(req
, 128, genl_family
, 0, L2TP_GENL_VERSION
,
472 L2TP_CMD_SESSION_GET
,
473 NLM_F_ROOT
| NLM_F_MATCH
| NLM_F_REQUEST
);
475 req
.n
.nlmsg_seq
= genl_rth
.dump
= ++genl_rth
.seq
;
477 if (p
->config
.tunnel_id
&& p
->config
.session_id
) {
478 addattr32(&req
.n
, 128, L2TP_ATTR_CONN_ID
, p
->config
.tunnel_id
);
479 addattr32(&req
.n
, 128, L2TP_ATTR_SESSION_ID
,
480 p
->config
.session_id
);
483 if (rtnl_send(&genl_rth
, &req
, req
.n
.nlmsg_len
) < 0)
487 if (rtnl_dump_filter(&genl_rth
, session_nlmsg
, p
) < 0) {
488 fprintf(stderr
, "Dump terminated\n");
497 static int tunnel_nlmsg(const struct sockaddr_nl
*who
,
498 struct nlmsghdr
*n
, void *arg
)
500 int ret
= get_response(n
, arg
);
508 static int get_tunnel(struct l2tp_data
*p
)
510 GENL_REQUEST(req
, 1024, genl_family
, 0, L2TP_GENL_VERSION
,
512 NLM_F_ROOT
| NLM_F_MATCH
| NLM_F_REQUEST
);
514 req
.n
.nlmsg_seq
= genl_rth
.dump
= ++genl_rth
.seq
;
516 if (p
->config
.tunnel_id
)
517 addattr32(&req
.n
, 1024, L2TP_ATTR_CONN_ID
, p
->config
.tunnel_id
);
519 if (rtnl_send(&genl_rth
, &req
, req
.n
.nlmsg_len
) < 0)
523 if (rtnl_dump_filter(&genl_rth
, tunnel_nlmsg
, p
) < 0) {
524 fprintf(stderr
, "Dump terminated\n");
533 /*****************************************************************************
535 *****************************************************************************/
537 static void usage(void) __attribute__((noreturn
));
539 static void usage(void)
541 fprintf(stderr
, "Usage: ip l2tp add tunnel\n"
542 " remote ADDR local ADDR\n"
543 " tunnel_id ID peer_tunnel_id ID\n"
544 " [ encap { ip | udp } ]\n"
545 " [ udp_sport PORT ] [ udp_dport PORT ]\n"
546 " [ udp_csum { on | off } ]\n"
547 " [ udp6_csum_tx { on | off } ]\n"
548 " [ udp6_csum_rx { on | off } ]\n"
549 "Usage: ip l2tp add session [ name NAME ]\n"
551 " session_id ID peer_session_id ID\n"
552 " [ cookie HEXSTR ] [ peer_cookie HEXSTR ]\n"
553 " [ offset OFFSET ] [ peer_offset OFFSET ]\n"
554 " [ seq { none | send | recv | both } ]\n"
555 " [ l2spec_type L2SPEC ]\n"
556 " ip l2tp del tunnel tunnel_id ID\n"
557 " ip l2tp del session tunnel_id ID session_id ID\n"
558 " ip l2tp show tunnel [ tunnel_id ID ]\n"
559 " ip l2tp show session [ tunnel_id ID ] [ session_id ID ]\n"
561 "Where: NAME := STRING\n"
562 " ADDR := { IP_ADDRESS | any }\n"
563 " PORT := { 0..65535 }\n"
564 " ID := { 1..4294967295 }\n"
565 " HEXSTR := { 8 or 16 hex digits (4 / 8 bytes) }\n"
566 " L2SPEC := { none | default }\n");
571 static int parse_args(int argc
, char **argv
, int cmd
, struct l2tp_parm
*p
)
573 memset(p
, 0, sizeof(*p
));
579 p
->l2spec_type
= L2TP_L2SPECTYPE_DEFAULT
;
585 if (strcmp(*argv
, "encap") == 0) {
587 if (strcmp(*argv
, "ip") == 0) {
588 p
->encap
= L2TP_ENCAPTYPE_IP
;
589 } else if (strcmp(*argv
, "udp") == 0) {
590 p
->encap
= L2TP_ENCAPTYPE_UDP
;
592 fprintf(stderr
, "Unknown tunnel encapsulation \"%s\"\n", *argv
);
595 } else if (strcmp(*argv
, "name") == 0) {
597 if (check_ifname(*argv
))
598 invarg("\"name\" not a valid ifname", *argv
);
600 } else if (strcmp(*argv
, "remote") == 0) {
602 if (get_addr(&p
->peer_ip
, *argv
, AF_UNSPEC
))
603 invarg("invalid remote address\n", *argv
);
604 } else if (strcmp(*argv
, "local") == 0) {
606 if (get_addr(&p
->local_ip
, *argv
, AF_UNSPEC
))
607 invarg("invalid local address\n", *argv
);
608 } else if ((strcmp(*argv
, "tunnel_id") == 0) ||
609 (strcmp(*argv
, "tid") == 0)) {
613 if (get_u32(&uval
, *argv
, 0))
614 invarg("invalid ID\n", *argv
);
616 } else if ((strcmp(*argv
, "peer_tunnel_id") == 0) ||
617 (strcmp(*argv
, "ptid") == 0)) {
621 if (get_u32(&uval
, *argv
, 0))
622 invarg("invalid ID\n", *argv
);
623 p
->peer_tunnel_id
= uval
;
624 } else if ((strcmp(*argv
, "session_id") == 0) ||
625 (strcmp(*argv
, "sid") == 0)) {
629 if (get_u32(&uval
, *argv
, 0))
630 invarg("invalid ID\n", *argv
);
631 p
->session_id
= uval
;
632 } else if ((strcmp(*argv
, "peer_session_id") == 0) ||
633 (strcmp(*argv
, "psid") == 0)) {
637 if (get_u32(&uval
, *argv
, 0))
638 invarg("invalid ID\n", *argv
);
639 p
->peer_session_id
= uval
;
640 } else if (strcmp(*argv
, "udp_sport") == 0) {
644 if (get_u16(&uval
, *argv
, 0))
645 invarg("invalid port\n", *argv
);
646 p
->local_udp_port
= uval
;
647 } else if (strcmp(*argv
, "udp_dport") == 0) {
651 if (get_u16(&uval
, *argv
, 0))
652 invarg("invalid port\n", *argv
);
653 p
->peer_udp_port
= uval
;
654 } else if (strcmp(*argv
, "udp_csum") == 0) {
656 if (strcmp(*argv
, "on") == 0)
658 else if (strcmp(*argv
, "off") == 0)
661 invarg("invalid option for udp_csum\n", *argv
);
662 } else if (strcmp(*argv
, "udp6_csum_rx") == 0) {
664 if (strcmp(*argv
, "on") == 0)
666 else if (strcmp(*argv
, "off") == 0)
669 invarg("invalid option for udp6_csum_rx\n"
671 } else if (strcmp(*argv
, "udp6_csum_tx") == 0) {
673 if (strcmp(*argv
, "on") == 0)
675 else if (strcmp(*argv
, "off") == 0)
678 invarg("invalid option for udp6_csum_tx\n"
680 } else if (strcmp(*argv
, "offset") == 0) {
684 if (get_u8(&uval
, *argv
, 0))
685 invarg("invalid offset\n", *argv
);
687 } else if (strcmp(*argv
, "peer_offset") == 0) {
691 if (get_u8(&uval
, *argv
, 0))
692 invarg("invalid offset\n", *argv
);
693 p
->peer_offset
= uval
;
694 } else if (strcmp(*argv
, "cookie") == 0) {
698 slen
= strlen(*argv
);
699 if ((slen
!= 8) && (slen
!= 16))
700 invarg("cookie must be either 8 or 16 hex digits\n", *argv
);
702 p
->cookie_len
= slen
/ 2;
703 if (hex2mem(*argv
, p
->cookie
, p
->cookie_len
) < 0)
704 invarg("cookie must be a hex string\n", *argv
);
705 } else if (strcmp(*argv
, "peer_cookie") == 0) {
709 slen
= strlen(*argv
);
710 if ((slen
!= 8) && (slen
!= 16))
711 invarg("cookie must be either 8 or 16 hex digits\n", *argv
);
713 p
->peer_cookie_len
= slen
/ 2;
714 if (hex2mem(*argv
, p
->peer_cookie
, p
->peer_cookie_len
) < 0)
715 invarg("cookie must be a hex string\n", *argv
);
716 } else if (strcmp(*argv
, "l2spec_type") == 0) {
718 if (strcasecmp(*argv
, "default") == 0) {
719 p
->l2spec_type
= L2TP_L2SPECTYPE_DEFAULT
;
721 } else if (strcasecmp(*argv
, "none") == 0) {
722 p
->l2spec_type
= L2TP_L2SPECTYPE_NONE
;
726 "Unknown layer2specific header type \"%s\"\n",
730 } else if (strcmp(*argv
, "seq") == 0) {
732 if (strcasecmp(*argv
, "both") == 0) {
735 } else if (strcasecmp(*argv
, "recv") == 0) {
737 } else if (strcasecmp(*argv
, "send") == 0) {
739 } else if (strcasecmp(*argv
, "none") == 0) {
744 "Unknown seq value \"%s\"\n", *argv
);
747 } else if (strcmp(*argv
, "tunnel") == 0) {
749 } else if (strcmp(*argv
, "session") == 0) {
751 } else if (matches(*argv
, "help") == 0) {
754 fprintf(stderr
, "Unknown command: %s\n", *argv
);
765 static int do_add(int argc
, char **argv
)
770 if (parse_args(argc
, argv
, L2TP_ADD
, &p
) < 0)
773 if (!p
.tunnel
&& !p
.session
)
774 missarg("tunnel or session");
776 if (p
.tunnel_id
== 0)
777 missarg("tunnel_id");
779 /* session_id and peer_session_id must be provided for sessions */
780 if ((p
.session
) && (p
.peer_session_id
== 0))
781 missarg("peer_session_id");
782 if ((p
.session
) && (p
.session_id
== 0))
783 missarg("session_id");
785 /* peer_tunnel_id is needed for tunnels */
786 if ((p
.tunnel
) && (p
.peer_tunnel_id
== 0))
787 missarg("peer_tunnel_id");
790 if (p
.local_ip
.family
== AF_UNSPEC
)
793 if (p
.peer_ip
.family
== AF_UNSPEC
)
796 if (p
.encap
== L2TP_ENCAPTYPE_UDP
) {
797 if (p
.local_udp_port
== 0)
798 missarg("udp_sport");
799 if (p
.peer_udp_port
== 0)
800 missarg("udp_dport");
803 ret
= create_tunnel(&p
);
807 /* Only ethernet pseudowires supported */
808 p
.pw_type
= L2TP_PWTYPE_ETH
;
810 ret
= create_session(&p
);
816 static int do_del(int argc
, char **argv
)
820 if (parse_args(argc
, argv
, L2TP_DEL
, &p
) < 0)
823 if (!p
.tunnel
&& !p
.session
)
824 missarg("tunnel or session");
826 if ((p
.tunnel
) && (p
.tunnel_id
== 0))
827 missarg("tunnel_id");
828 if ((p
.session
) && (p
.session_id
== 0))
829 missarg("session_id");
832 return delete_session(&p
);
834 return delete_tunnel(&p
);
839 static int do_show(int argc
, char **argv
)
841 struct l2tp_data data
;
842 struct l2tp_parm
*p
= &data
.config
;
844 if (parse_args(argc
, argv
, L2TP_GET
, p
) < 0)
847 if (!p
->tunnel
&& !p
->session
)
848 missarg("tunnel or session");
858 int do_ipl2tp(int argc
, char **argv
)
860 if (argc
< 1 || !matches(*argv
, "help"))
863 if (genl_init_handle(&genl_rth
, L2TP_GENL_NAME
, &genl_family
))
866 if (matches(*argv
, "add") == 0)
867 return do_add(argc
-1, argv
+1);
868 if (matches(*argv
, "delete") == 0)
869 return do_del(argc
-1, argv
+1);
870 if (matches(*argv
, "show") == 0 ||
871 matches(*argv
, "lst") == 0 ||
872 matches(*argv
, "list") == 0)
873 return do_show(argc
-1, argv
+1);
876 "Command \"%s\" is unknown, try \"ip l2tp help\".\n", *argv
);