1 | /* |
2 | * Copyright (c) 2012-2017 Apple Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | |
29 | #include <sys/param.h> |
30 | #include <sys/systm.h> |
31 | #include <sys/kernel.h> |
32 | #include <sys/socket.h> |
33 | #include <sys/socketvar.h> |
34 | #include <sys/protosw.h> |
35 | #include <sys/mcache.h> |
36 | #include <sys/syslog.h> |
37 | #include <sys/proc.h> |
38 | #include <sys/proc_internal.h> |
39 | #include <sys/resourcevar.h> |
40 | #include <sys/kauth.h> |
41 | #include <sys/priv.h> |
42 | |
43 | #include <net/if.h> |
44 | #include <netinet/in.h> |
45 | #include <netinet/in_var.h> |
46 | #include <netinet/tcp.h> |
47 | #include <netinet/tcp_fsm.h> |
48 | #include <netinet/tcp_seq.h> |
49 | #include <netinet/tcp_var.h> |
50 | #include <netinet/tcp_timer.h> |
51 | #include <netinet/mptcp_var.h> |
52 | #include <netinet/mptcp_timer.h> |
53 | |
54 | #include <mach/sdt.h> |
55 | |
56 | static int mptcp_usr_attach(struct socket *, int, struct proc *); |
57 | static int mptcp_usr_detach(struct socket *); |
58 | static int mptcp_attach(struct socket *, struct proc *); |
59 | static int mptcp_usr_connectx(struct socket *, struct sockaddr *, |
60 | struct sockaddr *, struct proc *, uint32_t, sae_associd_t, |
61 | sae_connid_t *, uint32_t, void *, uint32_t, struct uio *, user_ssize_t *); |
62 | static int mptcp_getassocids(struct mptses *, uint32_t *, user_addr_t); |
63 | static int mptcp_getconnids(struct mptses *, sae_associd_t, uint32_t *, |
64 | user_addr_t); |
65 | static int mptcp_getconninfo(struct mptses *, sae_connid_t *, uint32_t *, |
66 | uint32_t *, int32_t *, user_addr_t, socklen_t *, user_addr_t, socklen_t *, |
67 | uint32_t *, user_addr_t, uint32_t *); |
68 | static int mptcp_usr_control(struct socket *, u_long, caddr_t, struct ifnet *, |
69 | struct proc *); |
70 | static int mptcp_disconnect(struct mptses *); |
71 | static int mptcp_usr_disconnect(struct socket *); |
72 | static int mptcp_usr_disconnectx(struct socket *, sae_associd_t, sae_connid_t); |
73 | static struct mptses *mptcp_usrclosed(struct mptses *); |
74 | static int mptcp_usr_rcvd(struct socket *, int); |
75 | static int mptcp_usr_send(struct socket *, int, struct mbuf *, |
76 | struct sockaddr *, struct mbuf *, struct proc *); |
77 | static int mptcp_usr_shutdown(struct socket *); |
78 | static int mptcp_usr_sosend(struct socket *, struct sockaddr *, struct uio *, |
79 | struct mbuf *, struct mbuf *, int); |
80 | static int mptcp_usr_socheckopt(struct socket *, struct sockopt *); |
81 | static int mptcp_default_tcp_optval(struct mptses *, struct sockopt *, int *); |
82 | static int mptcp_usr_preconnect(struct socket *so); |
83 | |
84 | struct pr_usrreqs mptcp_usrreqs = { |
85 | .pru_attach = mptcp_usr_attach, |
86 | .pru_connectx = mptcp_usr_connectx, |
87 | .pru_control = mptcp_usr_control, |
88 | .pru_detach = mptcp_usr_detach, |
89 | .pru_disconnect = mptcp_usr_disconnect, |
90 | .pru_disconnectx = mptcp_usr_disconnectx, |
91 | .pru_peeraddr = mp_getpeeraddr, |
92 | .pru_rcvd = mptcp_usr_rcvd, |
93 | .pru_send = mptcp_usr_send, |
94 | .pru_shutdown = mptcp_usr_shutdown, |
95 | .pru_sockaddr = mp_getsockaddr, |
96 | .pru_sosend = mptcp_usr_sosend, |
97 | .pru_soreceive = soreceive, |
98 | .pru_socheckopt = mptcp_usr_socheckopt, |
99 | .pru_preconnect = mptcp_usr_preconnect, |
100 | }; |
101 | |
102 | |
103 | #if (DEVELOPMENT || DEBUG) |
104 | static int mptcp_disable_entitlements = 0; |
105 | SYSCTL_INT(_net_inet_mptcp, OID_AUTO, disable_entitlements, CTLFLAG_RW | CTLFLAG_LOCKED, |
106 | &mptcp_disable_entitlements, 0, "Disable Multipath TCP Entitlement Checking" ); |
107 | #endif |
108 | |
109 | int mptcp_developer_mode = 0; |
110 | SYSCTL_INT(_net_inet_mptcp, OID_AUTO, allow_aggregate, CTLFLAG_RW | CTLFLAG_LOCKED, |
111 | &mptcp_developer_mode, 0, "Allow the Multipath aggregation mode" ); |
112 | |
113 | |
114 | /* |
115 | * Attaches an MPTCP control block to a socket. |
116 | */ |
117 | static int |
118 | mptcp_usr_attach(struct socket *mp_so, int proto, struct proc *p) |
119 | { |
120 | #pragma unused(proto) |
121 | int error; |
122 | |
123 | VERIFY(mpsotomppcb(mp_so) == NULL); |
124 | |
125 | error = mptcp_attach(mp_so, p); |
126 | if (error != 0) |
127 | goto out; |
128 | /* |
129 | * XXX: adi@apple.com |
130 | * |
131 | * Might want to use a different SO_LINGER timeout than TCP's? |
132 | */ |
133 | if ((mp_so->so_options & SO_LINGER) && mp_so->so_linger == 0) |
134 | mp_so->so_linger = TCP_LINGERTIME * hz; |
135 | out: |
136 | return (error); |
137 | } |
138 | |
139 | /* |
140 | * Detaches an MPTCP control block from a socket. |
141 | */ |
142 | static int |
143 | mptcp_usr_detach(struct socket *mp_so) |
144 | { |
145 | struct mptses *mpte = mpsotompte(mp_so); |
146 | struct mppcb *mpp = mpsotomppcb(mp_so); |
147 | |
148 | if (mpp == NULL || mpp->mpp_state == MPPCB_STATE_DEAD) { |
149 | mptcplog((LOG_ERR, "%s state: %d\n" , __func__, |
150 | mpp ? mpp->mpp_state : -1), |
151 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_ERR); |
152 | return (EINVAL); |
153 | } |
154 | |
155 | /* |
156 | * We are done with this MPTCP socket (it has been closed); |
157 | * trigger all subflows to be disconnected, if not already, |
158 | * by initiating the PCB detach sequence (SOF_PCBCLEARING |
159 | * will be set.) |
160 | */ |
161 | mp_pcbdetach(mp_so); |
162 | |
163 | mptcp_disconnect(mpte); |
164 | |
165 | return (0); |
166 | } |
167 | |
168 | /* |
169 | * Attach MPTCP protocol to socket, allocating MP control block, |
170 | * MPTCP session, control block, buffer space, etc. |
171 | */ |
172 | static int |
173 | mptcp_attach(struct socket *mp_so, struct proc *p) |
174 | { |
175 | #pragma unused(p) |
176 | struct mptses *mpte = NULL; |
177 | struct mptcb *mp_tp = NULL; |
178 | struct mppcb *mpp = NULL; |
179 | int error = 0; |
180 | |
181 | if (mp_so->so_snd.sb_hiwat == 0 || mp_so->so_rcv.sb_hiwat == 0) { |
182 | error = soreserve(mp_so, tcp_sendspace, tcp_recvspace); |
183 | if (error != 0) |
184 | goto out; |
185 | } |
186 | |
187 | if (mp_so->so_snd.sb_preconn_hiwat == 0) { |
188 | soreserve_preconnect(mp_so, 2048); |
189 | } |
190 | |
191 | if ((mp_so->so_rcv.sb_flags & SB_USRSIZE) == 0) |
192 | mp_so->so_rcv.sb_flags |= SB_AUTOSIZE; |
193 | if ((mp_so->so_snd.sb_flags & SB_USRSIZE) == 0) |
194 | mp_so->so_snd.sb_flags |= SB_AUTOSIZE; |
195 | |
196 | /* |
197 | * MPTCP socket buffers cannot be compressed, due to the |
198 | * fact that each mbuf chained via m_next is a M_PKTHDR |
199 | * which carries some MPTCP metadata. |
200 | */ |
201 | mp_so->so_snd.sb_flags |= SB_NOCOMPRESS; |
202 | mp_so->so_rcv.sb_flags |= SB_NOCOMPRESS; |
203 | |
204 | if ((error = mp_pcballoc(mp_so, &mtcbinfo)) != 0) { |
205 | goto out; |
206 | } |
207 | |
208 | mpp = mpsotomppcb(mp_so); |
209 | VERIFY(mpp != NULL); |
210 | mpte = (struct mptses *)mpp->mpp_pcbe; |
211 | VERIFY(mpte != NULL); |
212 | mp_tp = mpte->mpte_mptcb; |
213 | VERIFY(mp_tp != NULL); |
214 | out: |
215 | return (error); |
216 | } |
217 | |
218 | static int |
219 | mptcp_entitlement_check(struct socket *mp_so) |
220 | { |
221 | struct mptses *mpte = mpsotompte(mp_so); |
222 | |
223 | if (soopt_cred_check(mp_so, PRIV_NET_RESTRICTED_MULTIPATH_EXTENDED, TRUE) == 0) { |
224 | /* |
225 | * This means the app has the extended entitlement. Thus, |
226 | * it's a first party app and can run without restrictions. |
227 | */ |
228 | mpte->mpte_flags |= MPTE_FIRSTPARTY; |
229 | goto grant; |
230 | } |
231 | |
232 | #if (DEVELOPMENT || DEBUG) |
233 | if (mptcp_disable_entitlements) |
234 | goto grant; |
235 | #endif |
236 | |
237 | if (soopt_cred_check(mp_so, PRIV_NET_PRIVILEGED_MULTIPATH, TRUE)) { |
238 | mptcplog((LOG_NOTICE, "%s Multipath Capability needed\n" , __func__), |
239 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_LOG); |
240 | return (-1); |
241 | } |
242 | |
243 | if (mpte->mpte_svctype > MPTCP_SVCTYPE_INTERACTIVE && |
244 | mptcp_developer_mode == 0) { |
245 | mptcplog((LOG_NOTICE, "%s need to set allow_aggregate sysctl\n" , |
246 | __func__), MPTCP_SOCKET_DBG, MPTCP_LOGLVL_LOG); |
247 | return (-1); |
248 | } |
249 | |
250 | grant: |
251 | mptcplog((LOG_NOTICE, "%s entitlement granted for %u\n" , __func__, mpte->mpte_svctype), |
252 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_LOG); |
253 | |
254 | return (0); |
255 | } |
256 | |
257 | /* |
258 | * Common subroutine to open a MPTCP connection to one of the remote hosts |
259 | * specified by dst_sl. This includes allocating and establishing a |
260 | * subflow TCP connection, either initially to establish MPTCP connection, |
261 | * or to join an existing one. Returns a connection handle upon success. |
262 | */ |
263 | static int |
264 | mptcp_connectx(struct mptses *mpte, struct sockaddr *src, |
265 | struct sockaddr *dst, uint32_t ifscope, sae_connid_t *pcid) |
266 | { |
267 | struct socket *mp_so = mptetoso(mpte); |
268 | int error = 0; |
269 | |
270 | VERIFY(dst != NULL); |
271 | VERIFY(pcid != NULL); |
272 | |
273 | mptcplog((LOG_DEBUG, "%s: mp_so 0x%llx\n" , __func__, |
274 | (u_int64_t)VM_KERNEL_ADDRPERM(mp_so)), |
275 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_LOG); |
276 | DTRACE_MPTCP2(connectx, struct mptses *, mpte, struct socket *, mp_so); |
277 | |
278 | error = mptcp_subflow_add(mpte, src, dst, ifscope, pcid); |
279 | |
280 | return (error); |
281 | } |
282 | |
283 | /* |
284 | * User-protocol pru_connectx callback. |
285 | */ |
286 | static int |
287 | mptcp_usr_connectx(struct socket *mp_so, struct sockaddr *src, |
288 | struct sockaddr *dst, struct proc *p, uint32_t ifscope, |
289 | sae_associd_t aid, sae_connid_t *pcid, uint32_t flags, void *arg, |
290 | uint32_t arglen, struct uio *auio, user_ssize_t *bytes_written) |
291 | { |
292 | #pragma unused(p, aid, flags, arg, arglen) |
293 | struct mppcb *mpp = mpsotomppcb(mp_so); |
294 | struct mptses *mpte = NULL; |
295 | struct mptcb *mp_tp = NULL; |
296 | user_ssize_t datalen; |
297 | int error = 0; |
298 | |
299 | if (mpp == NULL || mpp->mpp_state == MPPCB_STATE_DEAD) { |
300 | mptcplog((LOG_ERR, "%s state %d\n" , __func__, |
301 | mpp ? mpp->mpp_state : -1), |
302 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_ERR); |
303 | error = EINVAL; |
304 | goto out; |
305 | } |
306 | mpte = mptompte(mpp); |
307 | VERIFY(mpte != NULL); |
308 | mpte_lock_assert_held(mpte); |
309 | |
310 | mp_tp = mpte->mpte_mptcb; |
311 | VERIFY(mp_tp != NULL); |
312 | |
313 | if (mp_tp->mpt_flags & MPTCPF_FALLBACK_TO_TCP) { |
314 | mptcplog((LOG_ERR, "%s fell back to TCP\n" , __func__), |
315 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_ERR); |
316 | error = EINVAL; |
317 | goto out; |
318 | } |
319 | |
320 | if (dst->sa_family != AF_INET && dst->sa_family != AF_INET6) { |
321 | error = EAFNOSUPPORT; |
322 | goto out; |
323 | } |
324 | |
325 | if (dst->sa_family == AF_INET && |
326 | dst->sa_len != sizeof(mpte->__mpte_dst_v4)) { |
327 | mptcplog((LOG_ERR, "%s IPv4 dst len %u\n" , __func__, |
328 | dst->sa_len), |
329 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_ERR); |
330 | error = EINVAL; |
331 | goto out; |
332 | } |
333 | |
334 | if (dst->sa_family == AF_INET6 && |
335 | dst->sa_len != sizeof(mpte->__mpte_dst_v6)) { |
336 | mptcplog((LOG_ERR, "%s IPv6 dst len %u\n" , __func__, |
337 | dst->sa_len), |
338 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_ERR); |
339 | error = EINVAL; |
340 | goto out; |
341 | } |
342 | |
343 | if (!(mpte->mpte_flags & MPTE_SVCTYPE_CHECKED)) { |
344 | if (mptcp_entitlement_check(mp_so) < 0) { |
345 | error = EPERM; |
346 | goto out; |
347 | } |
348 | |
349 | mpte->mpte_flags |= MPTE_SVCTYPE_CHECKED; |
350 | } |
351 | |
352 | if ((mp_so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING)) == 0) { |
353 | memcpy(&mpte->mpte_dst, dst, dst->sa_len); |
354 | } |
355 | |
356 | if (src) { |
357 | if (src->sa_family != AF_INET && src->sa_family != AF_INET6) { |
358 | error = EAFNOSUPPORT; |
359 | goto out; |
360 | } |
361 | |
362 | if (src->sa_family == AF_INET && |
363 | src->sa_len != sizeof(mpte->__mpte_src_v4)) { |
364 | mptcplog((LOG_ERR, "%s IPv4 src len %u\n" , __func__, |
365 | src->sa_len), |
366 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_ERR); |
367 | error = EINVAL; |
368 | goto out; |
369 | } |
370 | |
371 | if (src->sa_family == AF_INET6 && |
372 | src->sa_len != sizeof(mpte->__mpte_src_v6)) { |
373 | mptcplog((LOG_ERR, "%s IPv6 src len %u\n" , __func__, |
374 | src->sa_len), |
375 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_ERR); |
376 | error = EINVAL; |
377 | goto out; |
378 | } |
379 | |
380 | if ((mp_so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING)) == 0) { |
381 | memcpy(&mpte->mpte_src, src, src->sa_len); |
382 | } |
383 | } |
384 | |
385 | error = mptcp_connectx(mpte, src, dst, ifscope, pcid); |
386 | |
387 | /* If there is data, copy it */ |
388 | if (auio != NULL) { |
389 | datalen = uio_resid(auio); |
390 | socket_unlock(mp_so, 0); |
391 | error = mp_so->so_proto->pr_usrreqs->pru_sosend(mp_so, NULL, |
392 | (uio_t) auio, NULL, NULL, 0); |
393 | |
394 | if (error == 0 || error == EWOULDBLOCK) |
395 | *bytes_written = datalen - uio_resid(auio); |
396 | |
397 | if (error == EWOULDBLOCK) |
398 | error = EINPROGRESS; |
399 | |
400 | socket_lock(mp_so, 0); |
401 | } |
402 | |
403 | out: |
404 | return (error); |
405 | } |
406 | |
407 | /* |
408 | * Handle SIOCGASSOCIDS ioctl for PF_MULTIPATH domain. |
409 | */ |
410 | static int |
411 | mptcp_getassocids(struct mptses *mpte, uint32_t *cnt, user_addr_t aidp) |
412 | { |
413 | mpte_lock_assert_held(mpte); /* same as MP socket lock */ |
414 | |
415 | /* MPTCP has at most 1 association */ |
416 | *cnt = (mpte->mpte_associd != SAE_ASSOCID_ANY) ? 1 : 0; |
417 | |
418 | /* just asking how many there are? */ |
419 | if (aidp == USER_ADDR_NULL) |
420 | return (0); |
421 | |
422 | return (copyout(&mpte->mpte_associd, aidp, |
423 | sizeof (mpte->mpte_associd))); |
424 | } |
425 | |
426 | /* |
427 | * Handle SIOCGCONNIDS ioctl for PF_MULTIPATH domain. |
428 | */ |
429 | static int |
430 | mptcp_getconnids(struct mptses *mpte, sae_associd_t aid, uint32_t *cnt, |
431 | user_addr_t cidp) |
432 | { |
433 | struct mptsub *mpts; |
434 | int error = 0; |
435 | |
436 | mpte_lock_assert_held(mpte); /* same as MP socket lock */ |
437 | |
438 | if (aid != SAE_ASSOCID_ANY && aid != SAE_ASSOCID_ALL && |
439 | aid != mpte->mpte_associd) |
440 | return (EINVAL); |
441 | |
442 | *cnt = mpte->mpte_numflows; |
443 | |
444 | /* just asking how many there are? */ |
445 | if (cidp == USER_ADDR_NULL) |
446 | return (0); |
447 | |
448 | TAILQ_FOREACH(mpts, &mpte->mpte_subflows, mpts_entry) { |
449 | if ((error = copyout(&mpts->mpts_connid, cidp, |
450 | sizeof (mpts->mpts_connid))) != 0) |
451 | break; |
452 | |
453 | cidp += sizeof (mpts->mpts_connid); |
454 | } |
455 | |
456 | return (error); |
457 | } |
458 | |
459 | /* |
460 | * Handle SIOCGCONNINFO ioctl for PF_MULTIPATH domain. |
461 | */ |
462 | static int |
463 | mptcp_getconninfo(struct mptses *mpte, sae_connid_t *cid, uint32_t *flags, |
464 | uint32_t *ifindex, int32_t *soerror, user_addr_t src, socklen_t *src_len, |
465 | user_addr_t dst, socklen_t *dst_len, uint32_t *aux_type, |
466 | user_addr_t aux_data, uint32_t *aux_len) |
467 | { |
468 | struct socket *so; |
469 | struct inpcb *inp; |
470 | struct mptsub *mpts; |
471 | int error = 0; |
472 | |
473 | *flags = 0; |
474 | *aux_type = 0; |
475 | *ifindex = 0; |
476 | *soerror = 0; |
477 | |
478 | if (*cid == SAE_CONNID_ALL) { |
479 | struct socket *mp_so = mptetoso(mpte); |
480 | struct mptcb *mp_tp = mpte->mpte_mptcb; |
481 | struct conninfo_multipathtcp mptcp_ci; |
482 | |
483 | if (*aux_len != 0 && *aux_len != sizeof(mptcp_ci)) |
484 | return (EINVAL); |
485 | |
486 | if (mp_so->so_state & SS_ISCONNECTING) |
487 | *flags |= CIF_CONNECTING; |
488 | if (mp_so->so_state & SS_ISCONNECTED) |
489 | *flags |= CIF_CONNECTED; |
490 | if (mp_so->so_state & SS_ISDISCONNECTING) |
491 | *flags |= CIF_DISCONNECTING; |
492 | if (mp_so->so_state & SS_ISDISCONNECTED) |
493 | *flags |= CIF_DISCONNECTED; |
494 | if (!(mp_tp->mpt_flags & MPTCPF_FALLBACK_TO_TCP)) |
495 | *flags |= CIF_MP_CAPABLE; |
496 | if (mp_tp->mpt_flags & MPTCPF_FALLBACK_TO_TCP) |
497 | *flags |= CIF_MP_DEGRADED; |
498 | |
499 | *src_len = 0; |
500 | *dst_len = 0; |
501 | |
502 | *aux_type = CIAUX_MPTCP; |
503 | *aux_len = sizeof(mptcp_ci); |
504 | |
505 | if (aux_data != USER_ADDR_NULL) { |
506 | unsigned long i = 0; |
507 | int initial_info_set = 0; |
508 | |
509 | bzero(&mptcp_ci, sizeof (mptcp_ci)); |
510 | mptcp_ci.mptcpci_subflow_count = mpte->mpte_numflows; |
511 | mptcp_ci.mptcpci_switch_count = mpte->mpte_subflow_switches; |
512 | |
513 | VERIFY(sizeof(mptcp_ci.mptcpci_itfstats) == sizeof(mpte->mpte_itfstats)); |
514 | memcpy(mptcp_ci.mptcpci_itfstats, mpte->mpte_itfstats, sizeof(mptcp_ci.mptcpci_itfstats)); |
515 | |
516 | TAILQ_FOREACH(mpts, &mpte->mpte_subflows, mpts_entry) { |
517 | if (i >= sizeof(mptcp_ci.mptcpci_subflow_connids) / sizeof(sae_connid_t)) |
518 | break; |
519 | mptcp_ci.mptcpci_subflow_connids[i] = mpts->mpts_connid; |
520 | |
521 | if (mpts->mpts_flags & MPTSF_INITIAL_SUB) { |
522 | inp = sotoinpcb(mpts->mpts_socket); |
523 | |
524 | mptcp_ci.mptcpci_init_rxbytes = inp->inp_stat->rxbytes; |
525 | mptcp_ci.mptcpci_init_txbytes = inp->inp_stat->txbytes; |
526 | initial_info_set = 1; |
527 | } |
528 | |
529 | mptcpstats_update(mptcp_ci.mptcpci_itfstats, mpts); |
530 | |
531 | i++; |
532 | } |
533 | |
534 | if (initial_info_set == 0) { |
535 | mptcp_ci.mptcpci_init_rxbytes = mpte->mpte_init_rxbytes; |
536 | mptcp_ci.mptcpci_init_txbytes = mpte->mpte_init_txbytes; |
537 | } |
538 | |
539 | if (mpte->mpte_flags & MPTE_FIRSTPARTY) |
540 | mptcp_ci.mptcpci_flags |= MPTCPCI_FIRSTPARTY; |
541 | |
542 | error = copyout(&mptcp_ci, aux_data, sizeof(mptcp_ci)); |
543 | if (error != 0) { |
544 | mptcplog((LOG_ERR, "%s copyout failed: %d\n" , |
545 | __func__, error), |
546 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_ERR); |
547 | return (error); |
548 | } |
549 | } |
550 | |
551 | return (0); |
552 | } |
553 | |
554 | TAILQ_FOREACH(mpts, &mpte->mpte_subflows, mpts_entry) { |
555 | if (mpts->mpts_connid == *cid || *cid == SAE_CONNID_ANY) |
556 | break; |
557 | } |
558 | if (mpts == NULL) |
559 | return ((*cid == SAE_CONNID_ANY) ? ENXIO : EINVAL); |
560 | |
561 | so = mpts->mpts_socket; |
562 | inp = sotoinpcb(so); |
563 | |
564 | if (inp->inp_vflag & INP_IPV4) |
565 | error = in_getconninfo(so, SAE_CONNID_ANY, flags, ifindex, |
566 | soerror, src, src_len, dst, dst_len, |
567 | aux_type, aux_data, aux_len); |
568 | else |
569 | error = in6_getconninfo(so, SAE_CONNID_ANY, flags, ifindex, |
570 | soerror, src, src_len, dst, dst_len, |
571 | aux_type, aux_data, aux_len); |
572 | |
573 | if (error != 0) { |
574 | mptcplog((LOG_ERR, "%s error from in_getconninfo %d\n" , |
575 | __func__, error), |
576 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_ERR); |
577 | return (error); |
578 | } |
579 | |
580 | if (mpts->mpts_flags & MPTSF_MP_CAPABLE) |
581 | *flags |= CIF_MP_CAPABLE; |
582 | if (mpts->mpts_flags & MPTSF_MP_DEGRADED) |
583 | *flags |= CIF_MP_DEGRADED; |
584 | if (mpts->mpts_flags & MPTSF_MP_READY) |
585 | *flags |= CIF_MP_READY; |
586 | if (mpts->mpts_flags & MPTSF_ACTIVE) |
587 | *flags |= CIF_MP_ACTIVE; |
588 | |
589 | mptcplog((LOG_DEBUG, "%s: cid %d flags %x \n" , __func__, |
590 | mpts->mpts_connid, mpts->mpts_flags), |
591 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_VERBOSE); |
592 | |
593 | return (0); |
594 | } |
595 | |
596 | /* |
597 | * User-protocol pru_control callback. |
598 | */ |
599 | static int |
600 | mptcp_usr_control(struct socket *mp_so, u_long cmd, caddr_t data, |
601 | struct ifnet *ifp, struct proc *p) |
602 | { |
603 | #pragma unused(ifp, p) |
604 | struct mppcb *mpp = mpsotomppcb(mp_so); |
605 | struct mptses *mpte; |
606 | int error = 0; |
607 | |
608 | if (mpp == NULL || mpp->mpp_state == MPPCB_STATE_DEAD) { |
609 | error = EINVAL; |
610 | goto out; |
611 | } |
612 | mpte = mptompte(mpp); |
613 | VERIFY(mpte != NULL); |
614 | |
615 | mpte_lock_assert_held(mpte); /* same as MP socket lock */ |
616 | |
617 | switch (cmd) { |
618 | case SIOCGASSOCIDS32: { /* struct so_aidreq32 */ |
619 | struct so_aidreq32 aidr; |
620 | bcopy(data, &aidr, sizeof (aidr)); |
621 | error = mptcp_getassocids(mpte, &aidr.sar_cnt, |
622 | aidr.sar_aidp); |
623 | if (error == 0) |
624 | bcopy(&aidr, data, sizeof (aidr)); |
625 | break; |
626 | } |
627 | |
628 | case SIOCGASSOCIDS64: { /* struct so_aidreq64 */ |
629 | struct so_aidreq64 aidr; |
630 | bcopy(data, &aidr, sizeof (aidr)); |
631 | error = mptcp_getassocids(mpte, &aidr.sar_cnt, |
632 | aidr.sar_aidp); |
633 | if (error == 0) |
634 | bcopy(&aidr, data, sizeof (aidr)); |
635 | break; |
636 | } |
637 | |
638 | case SIOCGCONNIDS32: { /* struct so_cidreq32 */ |
639 | struct so_cidreq32 cidr; |
640 | bcopy(data, &cidr, sizeof (cidr)); |
641 | error = mptcp_getconnids(mpte, cidr.scr_aid, &cidr.scr_cnt, |
642 | cidr.scr_cidp); |
643 | if (error == 0) |
644 | bcopy(&cidr, data, sizeof (cidr)); |
645 | break; |
646 | } |
647 | |
648 | case SIOCGCONNIDS64: { /* struct so_cidreq64 */ |
649 | struct so_cidreq64 cidr; |
650 | bcopy(data, &cidr, sizeof (cidr)); |
651 | error = mptcp_getconnids(mpte, cidr.scr_aid, &cidr.scr_cnt, |
652 | cidr.scr_cidp); |
653 | if (error == 0) |
654 | bcopy(&cidr, data, sizeof (cidr)); |
655 | break; |
656 | } |
657 | |
658 | case SIOCGCONNINFO32: { /* struct so_cinforeq32 */ |
659 | struct so_cinforeq32 cifr; |
660 | bcopy(data, &cifr, sizeof (cifr)); |
661 | error = mptcp_getconninfo(mpte, &cifr.scir_cid, |
662 | &cifr.scir_flags, &cifr.scir_ifindex, &cifr.scir_error, |
663 | cifr.scir_src, &cifr.scir_src_len, cifr.scir_dst, |
664 | &cifr.scir_dst_len, &cifr.scir_aux_type, cifr.scir_aux_data, |
665 | &cifr.scir_aux_len); |
666 | if (error == 0) |
667 | bcopy(&cifr, data, sizeof (cifr)); |
668 | break; |
669 | } |
670 | |
671 | case SIOCGCONNINFO64: { /* struct so_cinforeq64 */ |
672 | struct so_cinforeq64 cifr; |
673 | bcopy(data, &cifr, sizeof (cifr)); |
674 | error = mptcp_getconninfo(mpte, &cifr.scir_cid, |
675 | &cifr.scir_flags, &cifr.scir_ifindex, &cifr.scir_error, |
676 | cifr.scir_src, &cifr.scir_src_len, cifr.scir_dst, |
677 | &cifr.scir_dst_len, &cifr.scir_aux_type, cifr.scir_aux_data, |
678 | &cifr.scir_aux_len); |
679 | if (error == 0) |
680 | bcopy(&cifr, data, sizeof (cifr)); |
681 | break; |
682 | } |
683 | |
684 | default: |
685 | error = EOPNOTSUPP; |
686 | break; |
687 | } |
688 | out: |
689 | return (error); |
690 | } |
691 | |
692 | static int |
693 | mptcp_disconnect(struct mptses *mpte) |
694 | { |
695 | struct socket *mp_so; |
696 | struct mptcb *mp_tp; |
697 | int error = 0; |
698 | |
699 | mpte_lock_assert_held(mpte); /* same as MP socket lock */ |
700 | |
701 | mp_so = mptetoso(mpte); |
702 | mp_tp = mpte->mpte_mptcb; |
703 | |
704 | mptcplog((LOG_DEBUG, "%s: mp_so 0x%llx %d\n" , __func__, |
705 | (u_int64_t)VM_KERNEL_ADDRPERM(mp_so), mp_so->so_error), |
706 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_LOG); |
707 | |
708 | DTRACE_MPTCP3(disconnectx, struct mptses *, mpte, |
709 | struct socket *, mp_so, struct mptcb *, mp_tp); |
710 | |
711 | /* if we're not detached, go thru socket state checks */ |
712 | if (!(mp_so->so_flags & SOF_PCBCLEARING)) { |
713 | if (!(mp_so->so_state & (SS_ISCONNECTED| |
714 | SS_ISCONNECTING))) { |
715 | error = ENOTCONN; |
716 | goto out; |
717 | } |
718 | if (mp_so->so_state & SS_ISDISCONNECTING) { |
719 | error = EALREADY; |
720 | goto out; |
721 | } |
722 | } |
723 | |
724 | mptcp_cancel_all_timers(mp_tp); |
725 | if (mp_tp->mpt_state < MPTCPS_ESTABLISHED) { |
726 | mptcp_close(mpte, mp_tp); |
727 | } else if ((mp_so->so_options & SO_LINGER) && |
728 | mp_so->so_linger == 0) { |
729 | mptcp_drop(mpte, mp_tp, 0); |
730 | } else { |
731 | soisdisconnecting(mp_so); |
732 | sbflush(&mp_so->so_rcv); |
733 | if (mptcp_usrclosed(mpte) != NULL) |
734 | mptcp_output(mpte); |
735 | } |
736 | |
737 | if (error == 0) |
738 | mptcp_subflow_workloop(mpte); |
739 | |
740 | out: |
741 | return (error); |
742 | } |
743 | |
744 | /* |
745 | * Wrapper function to support disconnect on socket |
746 | */ |
747 | static int |
748 | mptcp_usr_disconnect(struct socket *mp_so) |
749 | { |
750 | return (mptcp_disconnect(mpsotompte(mp_so))); |
751 | } |
752 | |
753 | /* |
754 | * User-protocol pru_disconnectx callback. |
755 | */ |
756 | static int |
757 | mptcp_usr_disconnectx(struct socket *mp_so, sae_associd_t aid, sae_connid_t cid) |
758 | { |
759 | if (aid != SAE_ASSOCID_ANY && aid != SAE_ASSOCID_ALL) |
760 | return (EINVAL); |
761 | |
762 | if (cid != SAE_CONNID_ANY && cid != SAE_CONNID_ALL) |
763 | return (EINVAL); |
764 | |
765 | return (mptcp_usr_disconnect(mp_so)); |
766 | } |
767 | |
768 | void |
769 | mptcp_finish_usrclosed(struct mptses *mpte) |
770 | { |
771 | struct mptcb *mp_tp = mpte->mpte_mptcb; |
772 | struct socket *mp_so = mptetoso(mpte); |
773 | |
774 | if (mp_tp->mpt_state == MPTCPS_CLOSED) { |
775 | mpte = mptcp_close(mpte, mp_tp); |
776 | } else if (mp_tp->mpt_state >= MPTCPS_FIN_WAIT_2) { |
777 | soisdisconnected(mp_so); |
778 | } else { |
779 | struct mptsub *mpts; |
780 | |
781 | TAILQ_FOREACH(mpts, &mpte->mpte_subflows, mpts_entry) { |
782 | if ((mp_so->so_state & (SS_CANTRCVMORE|SS_CANTSENDMORE)) == |
783 | (SS_CANTRCVMORE | SS_CANTSENDMORE)) |
784 | mptcp_subflow_disconnect(mpte, mpts); |
785 | else |
786 | mptcp_subflow_shutdown(mpte, mpts); |
787 | } |
788 | } |
789 | } |
790 | |
791 | /* |
792 | * User issued close, and wish to trail thru shutdown states. |
793 | */ |
794 | static struct mptses * |
795 | mptcp_usrclosed(struct mptses *mpte) |
796 | { |
797 | struct mptcb *mp_tp = mpte->mpte_mptcb; |
798 | |
799 | mptcp_close_fsm(mp_tp, MPCE_CLOSE); |
800 | |
801 | /* Not everything has been acknowledged - don't close the subflows! */ |
802 | if (mp_tp->mpt_sndnxt + 1 != mp_tp->mpt_sndmax) |
803 | return (mpte); |
804 | |
805 | mptcp_finish_usrclosed(mpte); |
806 | |
807 | return (mpte); |
808 | } |
809 | |
810 | /* |
811 | * After a receive, possible send some update to peer. |
812 | */ |
813 | static int |
814 | mptcp_usr_rcvd(struct socket *mp_so, int flags) |
815 | { |
816 | #pragma unused(flags) |
817 | struct mppcb *mpp = mpsotomppcb(mp_so); |
818 | struct mptses *mpte; |
819 | int error = 0; |
820 | |
821 | if (mpp == NULL || mpp->mpp_state == MPPCB_STATE_DEAD) { |
822 | error = EINVAL; |
823 | goto out; |
824 | } |
825 | mpte = mptompte(mpp); |
826 | VERIFY(mpte != NULL); |
827 | |
828 | error = mptcp_output(mpte); |
829 | out: |
830 | return (error); |
831 | } |
832 | |
833 | /* |
834 | * Do a send by putting data in the output queue. |
835 | */ |
836 | static int |
837 | mptcp_usr_send(struct socket *mp_so, int prus_flags, struct mbuf *m, |
838 | struct sockaddr *nam, struct mbuf *control, struct proc *p) |
839 | { |
840 | #pragma unused(nam, p) |
841 | struct mppcb *mpp = mpsotomppcb(mp_so); |
842 | struct mptses *mpte; |
843 | int error = 0; |
844 | |
845 | if (prus_flags & (PRUS_OOB|PRUS_EOF)) { |
846 | error = EOPNOTSUPP; |
847 | goto out; |
848 | } |
849 | |
850 | if (nam != NULL) { |
851 | error = EOPNOTSUPP; |
852 | goto out; |
853 | } |
854 | |
855 | if (control != NULL && control->m_len != 0) { |
856 | error = EOPNOTSUPP; |
857 | goto out; |
858 | } |
859 | |
860 | if (mpp == NULL || mpp->mpp_state == MPPCB_STATE_DEAD) { |
861 | error = ECONNRESET; |
862 | goto out; |
863 | } |
864 | mpte = mptompte(mpp); |
865 | VERIFY(mpte != NULL); |
866 | |
867 | if (!(mp_so->so_state & SS_ISCONNECTED) && |
868 | !(mp_so->so_flags1 & SOF1_PRECONNECT_DATA)) { |
869 | error = ENOTCONN; |
870 | goto out; |
871 | } |
872 | |
873 | mptcp_insert_dsn(mpp, m); |
874 | VERIFY(mp_so->so_snd.sb_flags & SB_NOCOMPRESS); |
875 | sbappendstream(&mp_so->so_snd, m); |
876 | m = NULL; |
877 | |
878 | error = mptcp_output(mpte); |
879 | if (error != 0) |
880 | goto out; |
881 | |
882 | if (mp_so->so_state & SS_ISCONNECTING) { |
883 | if (mp_so->so_state & SS_NBIO) |
884 | error = EWOULDBLOCK; |
885 | else |
886 | error = sbwait(&mp_so->so_snd); |
887 | } |
888 | |
889 | out: |
890 | if (error) { |
891 | if (m != NULL) |
892 | m_freem(m); |
893 | if (control != NULL) |
894 | m_freem(control); |
895 | } |
896 | return (error); |
897 | } |
898 | |
899 | /* |
900 | * Mark the MPTCP connection as being incapable of further output. |
901 | */ |
902 | static int |
903 | mptcp_usr_shutdown(struct socket *mp_so) |
904 | { |
905 | struct mppcb *mpp = mpsotomppcb(mp_so); |
906 | struct mptses *mpte; |
907 | int error = 0; |
908 | |
909 | if (mpp == NULL || mpp->mpp_state == MPPCB_STATE_DEAD) { |
910 | error = EINVAL; |
911 | goto out; |
912 | } |
913 | mpte = mptompte(mpp); |
914 | VERIFY(mpte != NULL); |
915 | |
916 | socantsendmore(mp_so); |
917 | |
918 | mpte = mptcp_usrclosed(mpte); |
919 | if (mpte != NULL) |
920 | error = mptcp_output(mpte); |
921 | out: |
922 | return (error); |
923 | } |
924 | |
925 | /* |
926 | * Copy the contents of uio into a properly sized mbuf chain. |
927 | */ |
928 | static int |
929 | mptcp_uiotombuf(struct uio *uio, int how, int space, uint32_t align, |
930 | struct mbuf **top) |
931 | { |
932 | struct mbuf *m, *mb, *nm = NULL, *mtail = NULL; |
933 | user_ssize_t resid, tot, len, progress; /* must be user_ssize_t */ |
934 | int error; |
935 | |
936 | VERIFY(top != NULL && *top == NULL); |
937 | |
938 | /* |
939 | * space can be zero or an arbitrary large value bound by |
940 | * the total data supplied by the uio. |
941 | */ |
942 | resid = uio_resid(uio); |
943 | if (space > 0) |
944 | tot = imin(resid, space); |
945 | else |
946 | tot = resid; |
947 | |
948 | /* |
949 | * The smallest unit is a single mbuf with pkthdr. |
950 | * We can't align past it. |
951 | */ |
952 | if (align >= MHLEN) |
953 | return (EINVAL); |
954 | |
955 | /* |
956 | * Give us the full allocation or nothing. |
957 | * If space is zero return the smallest empty mbuf. |
958 | */ |
959 | if ((len = tot + align) == 0) |
960 | len = 1; |
961 | |
962 | /* Loop and append maximum sized mbufs to the chain tail. */ |
963 | while (len > 0) { |
964 | uint32_t m_needed = 1; |
965 | |
966 | if (njcl > 0 && len > MBIGCLBYTES) |
967 | mb = m_getpackets_internal(&m_needed, 1, |
968 | how, 1, M16KCLBYTES); |
969 | else if (len > MCLBYTES) |
970 | mb = m_getpackets_internal(&m_needed, 1, |
971 | how, 1, MBIGCLBYTES); |
972 | else if (len >= (signed)MINCLSIZE) |
973 | mb = m_getpackets_internal(&m_needed, 1, |
974 | how, 1, MCLBYTES); |
975 | else |
976 | mb = m_gethdr(how, MT_DATA); |
977 | |
978 | /* Fail the whole operation if one mbuf can't be allocated. */ |
979 | if (mb == NULL) { |
980 | if (nm != NULL) |
981 | m_freem(nm); |
982 | return (ENOBUFS); |
983 | } |
984 | |
985 | /* Book keeping. */ |
986 | VERIFY(mb->m_flags & M_PKTHDR); |
987 | len -= ((mb->m_flags & M_EXT) ? mb->m_ext.ext_size : MHLEN); |
988 | if (mtail != NULL) |
989 | mtail->m_next = mb; |
990 | else |
991 | nm = mb; |
992 | mtail = mb; |
993 | } |
994 | |
995 | m = nm; |
996 | m->m_data += align; |
997 | |
998 | progress = 0; |
999 | /* Fill all mbufs with uio data and update header information. */ |
1000 | for (mb = m; mb != NULL; mb = mb->m_next) { |
1001 | len = imin(M_TRAILINGSPACE(mb), tot - progress); |
1002 | |
1003 | error = uiomove(mtod(mb, char *), len, uio); |
1004 | if (error != 0) { |
1005 | m_freem(m); |
1006 | return (error); |
1007 | } |
1008 | |
1009 | /* each mbuf is M_PKTHDR chained via m_next */ |
1010 | mb->m_len = len; |
1011 | mb->m_pkthdr.len = len; |
1012 | |
1013 | progress += len; |
1014 | } |
1015 | VERIFY(progress == tot); |
1016 | *top = m; |
1017 | return (0); |
1018 | } |
1019 | |
1020 | /* |
1021 | * MPTCP socket protocol-user socket send routine, derived from sosend(). |
1022 | */ |
1023 | static int |
1024 | mptcp_usr_sosend(struct socket *mp_so, struct sockaddr *addr, struct uio *uio, |
1025 | struct mbuf *top, struct mbuf *control, int flags) |
1026 | { |
1027 | #pragma unused(addr) |
1028 | int32_t space; |
1029 | user_ssize_t resid; |
1030 | int error, sendflags; |
1031 | struct proc *p = current_proc(); |
1032 | int sblocked = 0; |
1033 | |
1034 | /* UIO is required for now, due to per-mbuf M_PKTHDR constrains */ |
1035 | if (uio == NULL || top != NULL) { |
1036 | error = EINVAL; |
1037 | goto out; |
1038 | } |
1039 | resid = uio_resid(uio); |
1040 | |
1041 | socket_lock(mp_so, 1); |
1042 | so_update_last_owner_locked(mp_so, p); |
1043 | so_update_policy(mp_so); |
1044 | |
1045 | VERIFY(mp_so->so_type == SOCK_STREAM); |
1046 | VERIFY(!(mp_so->so_flags & SOF_MP_SUBFLOW)); |
1047 | |
1048 | if ((flags & (MSG_OOB|MSG_DONTROUTE|MSG_HOLD|MSG_SEND|MSG_FLUSH)) || |
1049 | (mp_so->so_flags & SOF_ENABLE_MSGS)) { |
1050 | error = EOPNOTSUPP; |
1051 | socket_unlock(mp_so, 1); |
1052 | goto out; |
1053 | } |
1054 | |
1055 | /* |
1056 | * In theory resid should be unsigned. However, space must be |
1057 | * signed, as it might be less than 0 if we over-committed, and we |
1058 | * must use a signed comparison of space and resid. On the other |
1059 | * hand, a negative resid causes us to loop sending 0-length |
1060 | * segments to the protocol. |
1061 | */ |
1062 | if (resid < 0 || (flags & MSG_EOR) || control != NULL) { |
1063 | error = EINVAL; |
1064 | socket_unlock(mp_so, 1); |
1065 | goto out; |
1066 | } |
1067 | |
1068 | OSIncrementAtomicLong(&p->p_stats->p_ru.ru_msgsnd); |
1069 | |
1070 | do { |
1071 | error = sosendcheck(mp_so, NULL, resid, 0, 0, flags, |
1072 | &sblocked, NULL); |
1073 | if (error != 0) |
1074 | goto release; |
1075 | |
1076 | space = sbspace(&mp_so->so_snd); |
1077 | do { |
1078 | socket_unlock(mp_so, 0); |
1079 | /* |
1080 | * Copy the data from userland into an mbuf chain. |
1081 | */ |
1082 | error = mptcp_uiotombuf(uio, M_WAITOK, space, 0, &top); |
1083 | if (error != 0) { |
1084 | socket_lock(mp_so, 0); |
1085 | goto release; |
1086 | } |
1087 | VERIFY(top != NULL); |
1088 | space -= resid - uio_resid(uio); |
1089 | resid = uio_resid(uio); |
1090 | socket_lock(mp_so, 0); |
1091 | |
1092 | /* |
1093 | * Compute flags here, for pru_send and NKEs. |
1094 | */ |
1095 | sendflags = (resid > 0 && space > 0) ? |
1096 | PRUS_MORETOCOME : 0; |
1097 | |
1098 | /* |
1099 | * Socket filter processing |
1100 | */ |
1101 | VERIFY(control == NULL); |
1102 | error = sflt_data_out(mp_so, NULL, &top, &control, 0); |
1103 | if (error != 0) { |
1104 | if (error == EJUSTRETURN) { |
1105 | error = 0; |
1106 | top = NULL; |
1107 | /* always free control if any */ |
1108 | } |
1109 | goto release; |
1110 | } |
1111 | if (control != NULL) { |
1112 | m_freem(control); |
1113 | control = NULL; |
1114 | } |
1115 | |
1116 | /* |
1117 | * Pass data to protocol. |
1118 | */ |
1119 | error = (*mp_so->so_proto->pr_usrreqs->pru_send) |
1120 | (mp_so, sendflags, top, NULL, NULL, p); |
1121 | |
1122 | top = NULL; |
1123 | if (error != 0) |
1124 | goto release; |
1125 | } while (resid != 0 && space > 0); |
1126 | } while (resid != 0); |
1127 | |
1128 | release: |
1129 | if (sblocked) |
1130 | sbunlock(&mp_so->so_snd, FALSE); /* will unlock socket */ |
1131 | else |
1132 | socket_unlock(mp_so, 1); |
1133 | out: |
1134 | if (top != NULL) |
1135 | m_freem(top); |
1136 | if (control != NULL) |
1137 | m_freem(control); |
1138 | |
1139 | soclearfastopen(mp_so); |
1140 | |
1141 | return (error); |
1142 | } |
1143 | |
1144 | /* |
1145 | * Called to filter SOPT_{SET,GET} for SOL_SOCKET level socket options. |
1146 | * This routine simply indicates to the caller whether or not to proceed |
1147 | * further with the given socket option. This is invoked by sosetoptlock() |
1148 | * and sogetoptlock(). |
1149 | */ |
1150 | static int |
1151 | mptcp_usr_socheckopt(struct socket *mp_so, struct sockopt *sopt) |
1152 | { |
1153 | #pragma unused(mp_so) |
1154 | int error = 0; |
1155 | |
1156 | VERIFY(sopt->sopt_level == SOL_SOCKET); |
1157 | |
1158 | /* |
1159 | * We could check for sopt_dir (set/get) here, but we'll just |
1160 | * let the caller deal with it as appropriate; therefore the |
1161 | * following is a superset of the socket options which we |
1162 | * allow for set/get. |
1163 | * |
1164 | * XXX: adi@apple.com |
1165 | * |
1166 | * Need to consider the following cases: |
1167 | * |
1168 | * a. Certain socket options don't have a clear definition |
1169 | * on the expected behavior post connect(2). At the time |
1170 | * those options are issued on the MP socket, there may |
1171 | * be existing subflow sockets that are already connected. |
1172 | */ |
1173 | switch (sopt->sopt_name) { |
1174 | case SO_LINGER: /* MP */ |
1175 | case SO_LINGER_SEC: /* MP */ |
1176 | case SO_TYPE: /* MP */ |
1177 | case SO_NREAD: /* MP */ |
1178 | case SO_NWRITE: /* MP */ |
1179 | case SO_ERROR: /* MP */ |
1180 | case SO_SNDBUF: /* MP */ |
1181 | case SO_RCVBUF: /* MP */ |
1182 | case SO_SNDLOWAT: /* MP */ |
1183 | case SO_RCVLOWAT: /* MP */ |
1184 | case SO_SNDTIMEO: /* MP */ |
1185 | case SO_RCVTIMEO: /* MP */ |
1186 | case SO_NKE: /* MP */ |
1187 | case SO_NOSIGPIPE: /* MP */ |
1188 | case SO_NOADDRERR: /* MP */ |
1189 | case SO_LABEL: /* MP */ |
1190 | case SO_PEERLABEL: /* MP */ |
1191 | case SO_DEFUNCTOK: /* MP */ |
1192 | case SO_ISDEFUNCT: /* MP */ |
1193 | case SO_TRAFFIC_CLASS_DBG: /* MP */ |
1194 | case SO_DELEGATED: /* MP */ |
1195 | case SO_DELEGATED_UUID: /* MP */ |
1196 | #if NECP |
1197 | case SO_NECP_ATTRIBUTES: |
1198 | case SO_NECP_CLIENTUUID: |
1199 | #endif /* NECP */ |
1200 | /* |
1201 | * Tell the caller that these options are to be processed. |
1202 | */ |
1203 | break; |
1204 | |
1205 | case SO_DEBUG: /* MP + subflow */ |
1206 | case SO_KEEPALIVE: /* MP + subflow */ |
1207 | case SO_USELOOPBACK: /* MP + subflow */ |
1208 | case SO_RANDOMPORT: /* MP + subflow */ |
1209 | case SO_TRAFFIC_CLASS: /* MP + subflow */ |
1210 | case SO_RECV_TRAFFIC_CLASS: /* MP + subflow */ |
1211 | case SO_PRIVILEGED_TRAFFIC_CLASS: /* MP + subflow */ |
1212 | case SO_RECV_ANYIF: /* MP + subflow */ |
1213 | case SO_RESTRICTIONS: /* MP + subflow */ |
1214 | case SO_FLUSH: /* MP + subflow */ |
1215 | case SO_NOWAKEFROMSLEEP: |
1216 | case SO_NOAPNFALLBK: |
1217 | case SO_MARK_CELLFALLBACK: |
1218 | /* |
1219 | * Tell the caller that these options are to be processed; |
1220 | * these will also be recorded later by mptcp_setopt(). |
1221 | * |
1222 | * NOTE: Only support integer option value for now. |
1223 | */ |
1224 | if (sopt->sopt_valsize != sizeof (int)) |
1225 | error = EINVAL; |
1226 | break; |
1227 | |
1228 | default: |
1229 | /* |
1230 | * Tell the caller to stop immediately and return an error. |
1231 | */ |
1232 | error = ENOPROTOOPT; |
1233 | break; |
1234 | } |
1235 | |
1236 | return (error); |
1237 | } |
1238 | |
1239 | /* |
1240 | * Issue SOPT_SET for all MPTCP subflows (for integer option values.) |
1241 | */ |
1242 | static int |
1243 | mptcp_setopt_apply(struct mptses *mpte, struct mptopt *mpo) |
1244 | { |
1245 | struct socket *mp_so; |
1246 | struct mptsub *mpts; |
1247 | struct mptopt smpo; |
1248 | int error = 0; |
1249 | |
1250 | /* just bail now if this isn't applicable to subflow sockets */ |
1251 | if (!(mpo->mpo_flags & MPOF_SUBFLOW_OK)) { |
1252 | error = ENOPROTOOPT; |
1253 | goto out; |
1254 | } |
1255 | |
1256 | /* |
1257 | * Skip those that are handled internally; these options |
1258 | * should not have been recorded and marked with the |
1259 | * MPOF_SUBFLOW_OK by mptcp_setopt(), but just in case. |
1260 | */ |
1261 | if (mpo->mpo_level == SOL_SOCKET && |
1262 | (mpo->mpo_name == SO_NOSIGPIPE || mpo->mpo_name == SO_NOADDRERR)) { |
1263 | error = ENOPROTOOPT; |
1264 | goto out; |
1265 | } |
1266 | |
1267 | mpte_lock_assert_held(mpte); /* same as MP socket lock */ |
1268 | mp_so = mptetoso(mpte); |
1269 | |
1270 | /* |
1271 | * Don't bother going further if there's no subflow; mark the option |
1272 | * with MPOF_INTERIM so that we know whether or not to remove this |
1273 | * option upon encountering an error while issuing it during subflow |
1274 | * socket creation. |
1275 | */ |
1276 | if (mpte->mpte_numflows == 0) { |
1277 | VERIFY(TAILQ_EMPTY(&mpte->mpte_subflows)); |
1278 | mpo->mpo_flags |= MPOF_INTERIM; |
1279 | /* return success */ |
1280 | goto out; |
1281 | } |
1282 | |
1283 | bzero(&smpo, sizeof (smpo)); |
1284 | smpo.mpo_flags |= MPOF_SUBFLOW_OK; |
1285 | smpo.mpo_level = mpo->mpo_level; |
1286 | smpo.mpo_name = mpo->mpo_name; |
1287 | |
1288 | /* grab exisiting values in case we need to rollback */ |
1289 | TAILQ_FOREACH(mpts, &mpte->mpte_subflows, mpts_entry) { |
1290 | struct socket *so; |
1291 | |
1292 | mpts->mpts_flags &= ~(MPTSF_SOPT_OLDVAL|MPTSF_SOPT_INPROG); |
1293 | mpts->mpts_oldintval = 0; |
1294 | smpo.mpo_intval = 0; |
1295 | VERIFY(mpts->mpts_socket != NULL); |
1296 | so = mpts->mpts_socket; |
1297 | if (mptcp_subflow_sogetopt(mpte, so, &smpo) == 0) { |
1298 | mpts->mpts_flags |= MPTSF_SOPT_OLDVAL; |
1299 | mpts->mpts_oldintval = smpo.mpo_intval; |
1300 | } |
1301 | } |
1302 | |
1303 | /* apply socket option */ |
1304 | TAILQ_FOREACH(mpts, &mpte->mpte_subflows, mpts_entry) { |
1305 | struct socket *so; |
1306 | |
1307 | mpts->mpts_flags |= MPTSF_SOPT_INPROG; |
1308 | VERIFY(mpts->mpts_socket != NULL); |
1309 | so = mpts->mpts_socket; |
1310 | error = mptcp_subflow_sosetopt(mpte, mpts, mpo); |
1311 | if (error != 0) |
1312 | break; |
1313 | } |
1314 | |
1315 | /* cleanup, and rollback if needed */ |
1316 | TAILQ_FOREACH(mpts, &mpte->mpte_subflows, mpts_entry) { |
1317 | struct socket *so; |
1318 | |
1319 | if (!(mpts->mpts_flags & MPTSF_SOPT_INPROG)) { |
1320 | /* clear in case it's set */ |
1321 | mpts->mpts_flags &= ~MPTSF_SOPT_OLDVAL; |
1322 | mpts->mpts_oldintval = 0; |
1323 | continue; |
1324 | } |
1325 | if (!(mpts->mpts_flags & MPTSF_SOPT_OLDVAL)) { |
1326 | mpts->mpts_flags &= ~MPTSF_SOPT_INPROG; |
1327 | VERIFY(mpts->mpts_oldintval == 0); |
1328 | continue; |
1329 | } |
1330 | /* error during sosetopt, so roll it back */ |
1331 | if (error != 0) { |
1332 | VERIFY(mpts->mpts_socket != NULL); |
1333 | so = mpts->mpts_socket; |
1334 | smpo.mpo_intval = mpts->mpts_oldintval; |
1335 | mptcp_subflow_sosetopt(mpte, mpts, &smpo); |
1336 | } |
1337 | mpts->mpts_oldintval = 0; |
1338 | mpts->mpts_flags &= ~(MPTSF_SOPT_OLDVAL|MPTSF_SOPT_INPROG); |
1339 | } |
1340 | |
1341 | out: |
1342 | return (error); |
1343 | } |
1344 | |
1345 | /* |
1346 | * Handle SOPT_SET for socket options issued on MP socket. |
1347 | */ |
1348 | static int |
1349 | mptcp_setopt(struct mptses *mpte, struct sockopt *sopt) |
1350 | { |
1351 | int error = 0, optval = 0, level, optname, rec = 1; |
1352 | struct mptopt smpo, *mpo = NULL; |
1353 | struct socket *mp_so; |
1354 | |
1355 | level = sopt->sopt_level; |
1356 | optname = sopt->sopt_name; |
1357 | |
1358 | mp_so = mptetoso(mpte); |
1359 | |
1360 | /* |
1361 | * Record socket options which are applicable to subflow sockets so |
1362 | * that we can replay them for new ones; see mptcp_usr_socheckopt() |
1363 | * for the list of eligible socket-level options. |
1364 | */ |
1365 | if (level == SOL_SOCKET) { |
1366 | switch (optname) { |
1367 | case SO_DEBUG: |
1368 | case SO_KEEPALIVE: |
1369 | case SO_USELOOPBACK: |
1370 | case SO_RANDOMPORT: |
1371 | case SO_TRAFFIC_CLASS: |
1372 | case SO_RECV_TRAFFIC_CLASS: |
1373 | case SO_PRIVILEGED_TRAFFIC_CLASS: |
1374 | case SO_RECV_ANYIF: |
1375 | case SO_RESTRICTIONS: |
1376 | case SO_NOWAKEFROMSLEEP: |
1377 | case SO_NOAPNFALLBK: |
1378 | case SO_MARK_CELLFALLBACK: |
1379 | /* record it */ |
1380 | break; |
1381 | case SO_FLUSH: |
1382 | /* don't record it */ |
1383 | rec = 0; |
1384 | break; |
1385 | |
1386 | /* Next ones, record at MPTCP-level */ |
1387 | #if NECP |
1388 | case SO_NECP_CLIENTUUID: |
1389 | if (!uuid_is_null(mpsotomppcb(mp_so)->necp_client_uuid)) { |
1390 | error = EINVAL; |
1391 | goto out; |
1392 | } |
1393 | |
1394 | error = sooptcopyin(sopt, &mpsotomppcb(mp_so)->necp_client_uuid, |
1395 | sizeof(uuid_t), sizeof(uuid_t)); |
1396 | if (error != 0) { |
1397 | goto out; |
1398 | } |
1399 | |
1400 | mpsotomppcb(mp_so)->necp_cb = mptcp_session_necp_cb; |
1401 | error = necp_client_register_multipath_cb(mp_so->last_pid, |
1402 | mpsotomppcb(mp_so)->necp_client_uuid, |
1403 | mpsotomppcb(mp_so)); |
1404 | if (error) |
1405 | goto out; |
1406 | |
1407 | if (uuid_is_null(mpsotomppcb(mp_so)->necp_client_uuid)) { |
1408 | error = EINVAL; |
1409 | goto out; |
1410 | } |
1411 | |
1412 | goto out; |
1413 | case SO_NECP_ATTRIBUTES: |
1414 | #endif /* NECP */ |
1415 | default: |
1416 | /* nothing to do; just return */ |
1417 | goto out; |
1418 | } |
1419 | } else { |
1420 | switch (optname) { |
1421 | case TCP_NODELAY: |
1422 | case TCP_RXT_FINDROP: |
1423 | case TCP_KEEPALIVE: |
1424 | case TCP_KEEPINTVL: |
1425 | case TCP_KEEPCNT: |
1426 | case TCP_CONNECTIONTIMEOUT: |
1427 | case TCP_RXT_CONNDROPTIME: |
1428 | case PERSIST_TIMEOUT: |
1429 | case TCP_ADAPTIVE_READ_TIMEOUT: |
1430 | case TCP_ADAPTIVE_WRITE_TIMEOUT: |
1431 | /* eligible; record it */ |
1432 | break; |
1433 | case TCP_NOTSENT_LOWAT: |
1434 | /* record at MPTCP level */ |
1435 | error = sooptcopyin(sopt, &optval, sizeof(optval), |
1436 | sizeof(optval)); |
1437 | if (error) |
1438 | goto out; |
1439 | if (optval < 0) { |
1440 | error = EINVAL; |
1441 | goto out; |
1442 | } else { |
1443 | if (optval == 0) { |
1444 | mp_so->so_flags &= ~SOF_NOTSENT_LOWAT; |
1445 | error = mptcp_set_notsent_lowat(mpte,0); |
1446 | } else { |
1447 | mp_so->so_flags |= SOF_NOTSENT_LOWAT; |
1448 | error = mptcp_set_notsent_lowat(mpte, |
1449 | optval); |
1450 | } |
1451 | } |
1452 | goto out; |
1453 | case MPTCP_SERVICE_TYPE: |
1454 | /* record at MPTCP level */ |
1455 | error = sooptcopyin(sopt, &optval, sizeof(optval), |
1456 | sizeof(optval)); |
1457 | if (error) |
1458 | goto out; |
1459 | if (optval < 0 || optval >= MPTCP_SVCTYPE_MAX) { |
1460 | error = EINVAL; |
1461 | goto out; |
1462 | } |
1463 | |
1464 | mpte->mpte_svctype = optval; |
1465 | |
1466 | if (mptcp_entitlement_check(mp_so) < 0) { |
1467 | error = EACCES; |
1468 | goto out; |
1469 | } |
1470 | |
1471 | mpte->mpte_flags |= MPTE_SVCTYPE_CHECKED; |
1472 | |
1473 | goto out; |
1474 | case MPTCP_ALTERNATE_PORT: |
1475 | /* record at MPTCP level */ |
1476 | error = sooptcopyin(sopt, &optval, sizeof(optval), |
1477 | sizeof(optval)); |
1478 | if (error) |
1479 | goto out; |
1480 | |
1481 | if (optval < 0 || optval > UINT16_MAX) { |
1482 | error = EINVAL; |
1483 | goto out; |
1484 | } |
1485 | |
1486 | mpte->mpte_alternate_port = optval; |
1487 | |
1488 | goto out; |
1489 | default: |
1490 | /* not eligible */ |
1491 | error = ENOPROTOOPT; |
1492 | goto out; |
1493 | } |
1494 | } |
1495 | |
1496 | if ((error = sooptcopyin(sopt, &optval, sizeof (optval), |
1497 | sizeof (optval))) != 0) |
1498 | goto out; |
1499 | |
1500 | if (rec) { |
1501 | /* search for an existing one; if not found, allocate */ |
1502 | if ((mpo = mptcp_sopt_find(mpte, sopt)) == NULL) |
1503 | mpo = mptcp_sopt_alloc(M_WAITOK); |
1504 | |
1505 | if (mpo == NULL) { |
1506 | error = ENOBUFS; |
1507 | } else { |
1508 | mptcplog((LOG_DEBUG, "%s: mp_so 0x%llx sopt %s val %d %s\n" , |
1509 | __func__, (u_int64_t)VM_KERNEL_ADDRPERM(mp_so), |
1510 | mptcp_sopt2str(level, optname), optval, |
1511 | (mpo->mpo_flags & MPOF_ATTACHED) ? |
1512 | "updated" : "recorded" ), |
1513 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_LOG); |
1514 | |
1515 | /* initialize or update, as needed */ |
1516 | mpo->mpo_intval = optval; |
1517 | if (!(mpo->mpo_flags & MPOF_ATTACHED)) { |
1518 | mpo->mpo_level = level; |
1519 | mpo->mpo_name = optname; |
1520 | mptcp_sopt_insert(mpte, mpo); |
1521 | } |
1522 | /* this can be issued on the subflow socket */ |
1523 | mpo->mpo_flags |= MPOF_SUBFLOW_OK; |
1524 | } |
1525 | } else { |
1526 | bzero(&smpo, sizeof (smpo)); |
1527 | mpo = &smpo; |
1528 | mpo->mpo_flags |= MPOF_SUBFLOW_OK; |
1529 | mpo->mpo_level = level; |
1530 | mpo->mpo_name = optname; |
1531 | mpo->mpo_intval = optval; |
1532 | } |
1533 | |
1534 | /* issue this socket option on existing subflows */ |
1535 | if (error == 0) { |
1536 | error = mptcp_setopt_apply(mpte, mpo); |
1537 | if (error != 0 && (mpo->mpo_flags & MPOF_ATTACHED)) { |
1538 | VERIFY(mpo != &smpo); |
1539 | mptcp_sopt_remove(mpte, mpo); |
1540 | mptcp_sopt_free(mpo); |
1541 | } |
1542 | if (mpo == &smpo) |
1543 | mpo->mpo_flags &= ~MPOF_INTERIM; |
1544 | } |
1545 | out: |
1546 | if (error == 0 && mpo != NULL) { |
1547 | mptcplog((LOG_INFO, "%s: mp_so 0x%llx sopt %s val %d set %s\n" , |
1548 | __func__, (u_int64_t)VM_KERNEL_ADDRPERM(mp_so), |
1549 | mptcp_sopt2str(level, optname), optval, |
1550 | (mpo->mpo_flags & MPOF_INTERIM) ? |
1551 | "pending" : "successful" ), |
1552 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_LOG); |
1553 | } else if (error != 0) { |
1554 | mptcplog((LOG_ERR, "%s: mp_so 0x%llx sopt %s (%d, %d) val %d can't be issued error %d\n" , |
1555 | __func__, (u_int64_t)VM_KERNEL_ADDRPERM(mp_so), |
1556 | mptcp_sopt2str(level, optname), level, optname, optval, error), |
1557 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_ERR); |
1558 | } |
1559 | return (error); |
1560 | } |
1561 | |
1562 | /* |
1563 | * Handle SOPT_GET for socket options issued on MP socket. |
1564 | */ |
1565 | static int |
1566 | mptcp_getopt(struct mptses *mpte, struct sockopt *sopt) |
1567 | { |
1568 | int error = 0, optval = 0; |
1569 | |
1570 | /* |
1571 | * We only handle SOPT_GET for TCP level socket options; we should |
1572 | * not get here for socket level options since they are already |
1573 | * handled at the socket layer. |
1574 | */ |
1575 | if (sopt->sopt_level != IPPROTO_TCP) { |
1576 | error = ENOPROTOOPT; |
1577 | goto out; |
1578 | } |
1579 | |
1580 | switch (sopt->sopt_name) { |
1581 | case TCP_NODELAY: |
1582 | case TCP_RXT_FINDROP: |
1583 | case TCP_KEEPALIVE: |
1584 | case TCP_KEEPINTVL: |
1585 | case TCP_KEEPCNT: |
1586 | case TCP_CONNECTIONTIMEOUT: |
1587 | case TCP_RXT_CONNDROPTIME: |
1588 | case PERSIST_TIMEOUT: |
1589 | case TCP_ADAPTIVE_READ_TIMEOUT: |
1590 | case TCP_ADAPTIVE_WRITE_TIMEOUT: |
1591 | case TCP_NOTSENT_LOWAT: |
1592 | case MPTCP_SERVICE_TYPE: |
1593 | case MPTCP_ALTERNATE_PORT: |
1594 | /* eligible; get the default value just in case */ |
1595 | error = mptcp_default_tcp_optval(mpte, sopt, &optval); |
1596 | break; |
1597 | default: |
1598 | /* not eligible */ |
1599 | error = ENOPROTOOPT; |
1600 | break; |
1601 | } |
1602 | |
1603 | switch (sopt->sopt_name) { |
1604 | case TCP_NOTSENT_LOWAT: |
1605 | if (mptetoso(mpte)->so_flags & SOF_NOTSENT_LOWAT) |
1606 | optval = mptcp_get_notsent_lowat(mpte); |
1607 | else |
1608 | optval = 0; |
1609 | goto out; |
1610 | case MPTCP_SERVICE_TYPE: |
1611 | optval = mpte->mpte_svctype; |
1612 | goto out; |
1613 | case MPTCP_ALTERNATE_PORT: |
1614 | optval = mpte->mpte_alternate_port; |
1615 | goto out; |
1616 | } |
1617 | |
1618 | /* |
1619 | * Search for a previously-issued TCP level socket option and |
1620 | * return the recorded option value. This assumes that the |
1621 | * value did not get modified by the lower layer after it was |
1622 | * issued at setsockopt(2) time. If not found, we'll return |
1623 | * the default value obtained ealier. |
1624 | */ |
1625 | if (error == 0) { |
1626 | struct mptopt *mpo; |
1627 | |
1628 | if ((mpo = mptcp_sopt_find(mpte, sopt)) != NULL) |
1629 | optval = mpo->mpo_intval; |
1630 | |
1631 | error = sooptcopyout(sopt, &optval, sizeof (int)); |
1632 | } |
1633 | out: |
1634 | return (error); |
1635 | } |
1636 | |
1637 | /* |
1638 | * Return default values for TCP socket options. Ideally we would query the |
1639 | * subflow TCP socket, but that requires creating a subflow socket before |
1640 | * connectx(2) time. To simplify things, just return the default values |
1641 | * that we know of. |
1642 | */ |
1643 | static int |
1644 | mptcp_default_tcp_optval(struct mptses *mpte, struct sockopt *sopt, int *optval) |
1645 | { |
1646 | int error = 0; |
1647 | |
1648 | VERIFY(sopt->sopt_level == IPPROTO_TCP); |
1649 | VERIFY(sopt->sopt_dir == SOPT_GET); |
1650 | mpte_lock_assert_held(mpte); /* same as MP socket lock */ |
1651 | |
1652 | /* try to do what tcp_newtcpcb() does */ |
1653 | switch (sopt->sopt_name) { |
1654 | case TCP_NODELAY: |
1655 | case TCP_RXT_FINDROP: |
1656 | case TCP_KEEPINTVL: |
1657 | case TCP_KEEPCNT: |
1658 | case TCP_CONNECTIONTIMEOUT: |
1659 | case TCP_RXT_CONNDROPTIME: |
1660 | case TCP_NOTSENT_LOWAT: |
1661 | case TCP_ADAPTIVE_READ_TIMEOUT: |
1662 | case TCP_ADAPTIVE_WRITE_TIMEOUT: |
1663 | case MPTCP_SERVICE_TYPE: |
1664 | case MPTCP_ALTERNATE_PORT: |
1665 | *optval = 0; |
1666 | break; |
1667 | |
1668 | case TCP_KEEPALIVE: |
1669 | *optval = mptcp_subflow_keeptime; |
1670 | break; |
1671 | |
1672 | case PERSIST_TIMEOUT: |
1673 | *optval = tcp_max_persist_timeout; |
1674 | break; |
1675 | |
1676 | default: |
1677 | error = ENOPROTOOPT; |
1678 | break; |
1679 | } |
1680 | return (error); |
1681 | } |
1682 | |
1683 | /* |
1684 | * MPTCP SOPT_{SET,GET} socket option handler, for options issued on the MP |
1685 | * socket, at SOL_SOCKET and IPPROTO_TCP levels. The former is restricted |
1686 | * to those that are allowed by mptcp_usr_socheckopt(). |
1687 | */ |
1688 | int |
1689 | mptcp_ctloutput(struct socket *mp_so, struct sockopt *sopt) |
1690 | { |
1691 | struct mppcb *mpp = mpsotomppcb(mp_so); |
1692 | struct mptses *mpte; |
1693 | int error = 0; |
1694 | |
1695 | if (mpp == NULL || mpp->mpp_state == MPPCB_STATE_DEAD) { |
1696 | error = EINVAL; |
1697 | goto out; |
1698 | } |
1699 | mpte = mptompte(mpp); |
1700 | mpte_lock_assert_held(mpte); /* same as MP socket lock */ |
1701 | |
1702 | /* we only handle socket and TCP-level socket options for MPTCP */ |
1703 | if (sopt->sopt_level != SOL_SOCKET && sopt->sopt_level != IPPROTO_TCP) { |
1704 | mptcplog((LOG_DEBUG, "MPTCP Socket: " |
1705 | "%s: mp_so 0x%llx sopt %s level not " |
1706 | "handled\n" , __func__, (u_int64_t)VM_KERNEL_ADDRPERM(mp_so), |
1707 | mptcp_sopt2str(sopt->sopt_level, sopt->sopt_name)), |
1708 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_LOG); |
1709 | error = EINVAL; |
1710 | goto out; |
1711 | } |
1712 | |
1713 | switch (sopt->sopt_dir) { |
1714 | case SOPT_SET: |
1715 | error = mptcp_setopt(mpte, sopt); |
1716 | break; |
1717 | |
1718 | case SOPT_GET: |
1719 | error = mptcp_getopt(mpte, sopt); |
1720 | break; |
1721 | } |
1722 | out: |
1723 | return (error); |
1724 | } |
1725 | |
1726 | const char * |
1727 | mptcp_sopt2str(int level, int optname) |
1728 | { |
1729 | switch (level) { |
1730 | case SOL_SOCKET: |
1731 | switch (optname) { |
1732 | case SO_LINGER: |
1733 | return ("SO_LINGER" ); |
1734 | case SO_LINGER_SEC: |
1735 | return ("SO_LINGER_SEC" ); |
1736 | case SO_DEBUG: |
1737 | return ("SO_DEBUG" ); |
1738 | case SO_KEEPALIVE: |
1739 | return ("SO_KEEPALIVE" ); |
1740 | case SO_USELOOPBACK: |
1741 | return ("SO_USELOOPBACK" ); |
1742 | case SO_TYPE: |
1743 | return ("SO_TYPE" ); |
1744 | case SO_NREAD: |
1745 | return ("SO_NREAD" ); |
1746 | case SO_NWRITE: |
1747 | return ("SO_NWRITE" ); |
1748 | case SO_ERROR: |
1749 | return ("SO_ERROR" ); |
1750 | case SO_SNDBUF: |
1751 | return ("SO_SNDBUF" ); |
1752 | case SO_RCVBUF: |
1753 | return ("SO_RCVBUF" ); |
1754 | case SO_SNDLOWAT: |
1755 | return ("SO_SNDLOWAT" ); |
1756 | case SO_RCVLOWAT: |
1757 | return ("SO_RCVLOWAT" ); |
1758 | case SO_SNDTIMEO: |
1759 | return ("SO_SNDTIMEO" ); |
1760 | case SO_RCVTIMEO: |
1761 | return ("SO_RCVTIMEO" ); |
1762 | case SO_NKE: |
1763 | return ("SO_NKE" ); |
1764 | case SO_NOSIGPIPE: |
1765 | return ("SO_NOSIGPIPE" ); |
1766 | case SO_NOADDRERR: |
1767 | return ("SO_NOADDRERR" ); |
1768 | case SO_RESTRICTIONS: |
1769 | return ("SO_RESTRICTIONS" ); |
1770 | case SO_LABEL: |
1771 | return ("SO_LABEL" ); |
1772 | case SO_PEERLABEL: |
1773 | return ("SO_PEERLABEL" ); |
1774 | case SO_RANDOMPORT: |
1775 | return ("SO_RANDOMPORT" ); |
1776 | case SO_TRAFFIC_CLASS: |
1777 | return ("SO_TRAFFIC_CLASS" ); |
1778 | case SO_RECV_TRAFFIC_CLASS: |
1779 | return ("SO_RECV_TRAFFIC_CLASS" ); |
1780 | case SO_TRAFFIC_CLASS_DBG: |
1781 | return ("SO_TRAFFIC_CLASS_DBG" ); |
1782 | case SO_PRIVILEGED_TRAFFIC_CLASS: |
1783 | return ("SO_PRIVILEGED_TRAFFIC_CLASS" ); |
1784 | case SO_DEFUNCTOK: |
1785 | return ("SO_DEFUNCTOK" ); |
1786 | case SO_ISDEFUNCT: |
1787 | return ("SO_ISDEFUNCT" ); |
1788 | case SO_OPPORTUNISTIC: |
1789 | return ("SO_OPPORTUNISTIC" ); |
1790 | case SO_FLUSH: |
1791 | return ("SO_FLUSH" ); |
1792 | case SO_RECV_ANYIF: |
1793 | return ("SO_RECV_ANYIF" ); |
1794 | case SO_NOWAKEFROMSLEEP: |
1795 | return ("SO_NOWAKEFROMSLEEP" ); |
1796 | case SO_NOAPNFALLBK: |
1797 | return ("SO_NOAPNFALLBK" ); |
1798 | case SO_MARK_CELLFALLBACK: |
1799 | return ("SO_CELLFALLBACK" ); |
1800 | case SO_DELEGATED: |
1801 | return ("SO_DELEGATED" ); |
1802 | case SO_DELEGATED_UUID: |
1803 | return ("SO_DELEGATED_UUID" ); |
1804 | #if NECP |
1805 | case SO_NECP_ATTRIBUTES: |
1806 | return ("SO_NECP_ATTRIBUTES" ); |
1807 | case SO_NECP_CLIENTUUID: |
1808 | return ("SO_NECP_CLIENTUUID" ); |
1809 | #endif /* NECP */ |
1810 | } |
1811 | |
1812 | break; |
1813 | case IPPROTO_TCP: |
1814 | switch (optname) { |
1815 | case TCP_NODELAY: |
1816 | return ("TCP_NODELAY" ); |
1817 | case TCP_KEEPALIVE: |
1818 | return ("TCP_KEEPALIVE" ); |
1819 | case TCP_KEEPINTVL: |
1820 | return ("TCP_KEEPINTVL" ); |
1821 | case TCP_KEEPCNT: |
1822 | return ("TCP_KEEPCNT" ); |
1823 | case TCP_CONNECTIONTIMEOUT: |
1824 | return ("TCP_CONNECTIONTIMEOUT" ); |
1825 | case TCP_RXT_CONNDROPTIME: |
1826 | return ("TCP_RXT_CONNDROPTIME" ); |
1827 | case PERSIST_TIMEOUT: |
1828 | return ("PERSIST_TIMEOUT" ); |
1829 | case TCP_NOTSENT_LOWAT: |
1830 | return ("NOTSENT_LOWAT" ); |
1831 | case TCP_ADAPTIVE_READ_TIMEOUT: |
1832 | return ("ADAPTIVE_READ_TIMEOUT" ); |
1833 | case TCP_ADAPTIVE_WRITE_TIMEOUT: |
1834 | return ("ADAPTIVE_WRITE_TIMEOUT" ); |
1835 | case MPTCP_SERVICE_TYPE: |
1836 | return ("MPTCP_SERVICE_TYPE" ); |
1837 | case MPTCP_ALTERNATE_PORT: |
1838 | return ("MPTCP_ALTERNATE_PORT" ); |
1839 | } |
1840 | |
1841 | break; |
1842 | } |
1843 | |
1844 | return ("unknown" ); |
1845 | } |
1846 | |
1847 | static int |
1848 | mptcp_usr_preconnect(struct socket *mp_so) |
1849 | { |
1850 | struct mptsub *mpts = NULL; |
1851 | struct mppcb *mpp = mpsotomppcb(mp_so); |
1852 | struct mptses *mpte; |
1853 | struct socket *so; |
1854 | struct tcpcb *tp = NULL; |
1855 | int error; |
1856 | |
1857 | mpte = mptompte(mpp); |
1858 | VERIFY(mpte != NULL); |
1859 | mpte_lock_assert_held(mpte); /* same as MP socket lock */ |
1860 | |
1861 | mpts = mptcp_get_subflow(mpte, NULL, NULL); |
1862 | if (mpts == NULL) { |
1863 | mptcplog((LOG_ERR, "%s: mp_so 0x%llx invalid preconnect " , |
1864 | __func__, (u_int64_t)VM_KERNEL_ADDRPERM(mp_so)), |
1865 | MPTCP_SOCKET_DBG, MPTCP_LOGLVL_ERR); |
1866 | return (EINVAL); |
1867 | } |
1868 | mpts->mpts_flags &= ~MPTSF_TFO_REQD; |
1869 | so = mpts->mpts_socket; |
1870 | tp = intotcpcb(sotoinpcb(so)); |
1871 | tp->t_mpflags &= ~TMPF_TFO_REQUEST; |
1872 | error = tcp_output(sototcpcb(so)); |
1873 | |
1874 | soclearfastopen(mp_so); |
1875 | |
1876 | return (error); |
1877 | } |
1878 | |