xref: /freebsd/sys/net/if_infiniband.c (revision 6be3386466ab79a84b48429ae66244f21526d3df) 
1 /*-
2  * Copyright (c) 2020 Mellanox Technologies. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16  * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23  * SUCH DAMAGE.
24  */
25 
26 #include "opt_inet.h"
27 #include "opt_inet6.h"
28 
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31 
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/devctl.h>
35 #include <sys/eventhandler.h>
36 #include <sys/kernel.h>
37 #include <sys/mbuf.h>
38 #include <sys/module.h>
39 #include <sys/socket.h>
40 #include <sys/sysctl.h>
41 
42 #include <net/bpf.h>
43 #include <net/ethernet.h>
44 #include <net/infiniband.h>
45 #include <net/if.h>
46 #include <net/if_var.h>
47 #include <net/if_dl.h>
48 #include <net/if_media.h>
49 #include <net/if_lagg.h>
50 #include <net/if_llatbl.h>
51 #include <net/if_types.h>
52 #include <net/netisr.h>
53 #include <net/route.h>
54 #include <netinet/if_ether.h>
55 #include <netinet/in.h>
56 #include <netinet/ip6.h>
57 #include <netinet6/in6_var.h>
58 #include <netinet6/nd6.h>
59 
60 #include <security/mac/mac_framework.h>
61 
62 /* if_lagg(4) support */
63 struct mbuf *(*lagg_input_infiniband_p)(struct ifnet *, struct mbuf *);
64 
65 #ifdef INET
66 static inline void
67 infiniband_ipv4_multicast_map(uint32_t addr,
68     const uint8_t *broadcast, uint8_t *buf)
69 {
70 	uint8_t scope;
71 
72 	addr = ntohl(addr);
73 	scope = broadcast[5] & 0xF;
74 
75 	buf[0] = 0;
76 	buf[1] = 0xff;
77 	buf[2] = 0xff;
78 	buf[3] = 0xff;
79 	buf[4] = 0xff;
80 	buf[5] = 0x10 | scope;
81 	buf[6] = 0x40;
82 	buf[7] = 0x1b;
83 	buf[8] = broadcast[8];
84 	buf[9] = broadcast[9];
85 	buf[10] = 0;
86 	buf[11] = 0;
87 	buf[12] = 0;
88 	buf[13] = 0;
89 	buf[14] = 0;
90 	buf[15] = 0;
91 	buf[16] = (addr >> 24) & 0xff;
92 	buf[17] = (addr >> 16) & 0xff;
93 	buf[18] = (addr >> 8) & 0xff;
94 	buf[19] = addr & 0xff;
95 }
96 #endif
97 
98 #ifdef INET6
99 static inline void
100 infiniband_ipv6_multicast_map(const struct in6_addr *addr,
101     const uint8_t *broadcast, uint8_t *buf)
102 {
103 	uint8_t scope;
104 
105 	scope = broadcast[5] & 0xF;
106 
107 	buf[0] = 0;
108 	buf[1] = 0xff;
109 	buf[2] = 0xff;
110 	buf[3] = 0xff;
111 	buf[4] = 0xff;
112 	buf[5] = 0x10 | scope;
113 	buf[6] = 0x60;
114 	buf[7] = 0x1b;
115 	buf[8] = broadcast[8];
116 	buf[9] = broadcast[9];
117 	memcpy(&buf[10], &addr->s6_addr[6], 10);
118 }
119 #endif
120 
121 /*
122  * This is for clients that have an infiniband_header in the mbuf.
123  */
124 void
125 infiniband_bpf_mtap(struct ifnet *ifp, struct mbuf *mb)
126 {
127 	struct infiniband_header *ibh;
128 	struct ether_header eh;
129 
130 	if (mb->m_len < sizeof(*ibh))
131 		return;
132 
133 	ibh = mtod(mb, struct infiniband_header *);
134 	eh.ether_type = ibh->ib_protocol;
135 	memset(eh.ether_shost, 0, ETHER_ADDR_LEN);
136 	memcpy(eh.ether_dhost, ibh->ib_hwaddr + 4, ETHER_ADDR_LEN);
137 	mb->m_data += sizeof(*ibh);
138 	mb->m_len -= sizeof(*ibh);
139 	mb->m_pkthdr.len -= sizeof(*ibh);
140 	bpf_mtap2(ifp->if_bpf, &eh, sizeof(eh), mb);
141 	mb->m_data -= sizeof(*ibh);
142 	mb->m_len += sizeof(*ibh);
143 	mb->m_pkthdr.len += sizeof(*ibh);
144 }
145 
146 static void
147 update_mbuf_csumflags(struct mbuf *src, struct mbuf *dst)
148 {
149 	int csum_flags = 0;
150 
151 	if (src->m_pkthdr.csum_flags & CSUM_IP)
152 		csum_flags |= (CSUM_IP_CHECKED|CSUM_IP_VALID);
153 	if (src->m_pkthdr.csum_flags & CSUM_DELAY_DATA)
154 		csum_flags |= (CSUM_DATA_VALID|CSUM_PSEUDO_HDR);
155 	if (src->m_pkthdr.csum_flags & CSUM_SCTP)
156 		csum_flags |= CSUM_SCTP_VALID;
157 	dst->m_pkthdr.csum_flags |= csum_flags;
158 	if (csum_flags & CSUM_DATA_VALID)
159 		dst->m_pkthdr.csum_data = 0xffff;
160 }
161 
162 /*
163  * Handle link-layer encapsulation requests.
164  */
165 static int
166 infiniband_requestencap(struct ifnet *ifp, struct if_encap_req *req)
167 {
168 	struct infiniband_header *ih;
169 	struct arphdr *ah;
170 	uint16_t etype;
171 	const uint8_t *lladdr;
172 
173 	if (req->rtype != IFENCAP_LL)
174 		return (EOPNOTSUPP);
175 
176 	if (req->bufsize < INFINIBAND_HDR_LEN)
177 		return (ENOMEM);
178 
179 	ih = (struct infiniband_header *)req->buf;
180 	lladdr = req->lladdr;
181 	req->lladdr_off = 0;
182 
183 	switch (req->family) {
184 	case AF_INET:
185 		etype = htons(ETHERTYPE_IP);
186 		break;
187 	case AF_INET6:
188 		etype = htons(ETHERTYPE_IPV6);
189 		break;
190 	case AF_ARP:
191 		ah = (struct arphdr *)req->hdata;
192 		ah->ar_hrd = htons(ARPHRD_INFINIBAND);
193 
194 		switch (ntohs(ah->ar_op)) {
195 		case ARPOP_REVREQUEST:
196 		case ARPOP_REVREPLY:
197 			etype = htons(ETHERTYPE_REVARP);
198 			break;
199 		case ARPOP_REQUEST:
200 		case ARPOP_REPLY:
201 		default:
202 			etype = htons(ETHERTYPE_ARP);
203 			break;
204 		}
205 
206 		if (req->flags & IFENCAP_FLAG_BROADCAST)
207 			lladdr = ifp->if_broadcastaddr;
208 		break;
209 	default:
210 		return (EAFNOSUPPORT);
211 	}
212 
213 	ih->ib_protocol = etype;
214 	ih->ib_reserved = 0;
215 	memcpy(ih->ib_hwaddr, lladdr, INFINIBAND_ADDR_LEN);
216 	req->bufsize = sizeof(struct infiniband_header);
217 
218 	return (0);
219 }
220 
221 static int
222 infiniband_resolve_addr(struct ifnet *ifp, struct mbuf *m,
223     const struct sockaddr *dst, struct route *ro, uint8_t *phdr,
224     uint32_t *pflags, struct llentry **plle)
225 {
226 	struct infiniband_header *ih;
227 	uint32_t lleflags = 0;
228 	int error = 0;
229 
230 	if (plle)
231 		*plle = NULL;
232 	ih = (struct infiniband_header *)phdr;
233 
234 	switch (dst->sa_family) {
235 #ifdef INET
236 	case AF_INET:
237 		if ((m->m_flags & (M_BCAST | M_MCAST)) == 0) {
238 			error = arpresolve(ifp, 0, m, dst, phdr, &lleflags, plle);
239 		} else {
240 			if (m->m_flags & M_BCAST) {
241 				memcpy(ih->ib_hwaddr, ifp->if_broadcastaddr,
242 				    INFINIBAND_ADDR_LEN);
243 			} else {
244 				infiniband_ipv4_multicast_map(
245 				    ((const struct sockaddr_in *)dst)->sin_addr.s_addr,
246 				    ifp->if_broadcastaddr, ih->ib_hwaddr);
247 			}
248 			ih->ib_protocol = htons(ETHERTYPE_IP);
249 			ih->ib_reserved = 0;
250 		}
251 		break;
252 #endif
253 #ifdef INET6
254 	case AF_INET6:
255 		if ((m->m_flags & M_MCAST) == 0) {
256 			error = nd6_resolve(ifp, 0, m, dst, phdr, &lleflags, plle);
257 		} else {
258 			infiniband_ipv6_multicast_map(
259 			    &((const struct sockaddr_in6 *)dst)->sin6_addr,
260 			    ifp->if_broadcastaddr, ih->ib_hwaddr);
261 			ih->ib_protocol = htons(ETHERTYPE_IPV6);
262 			ih->ib_reserved = 0;
263 		}
264 		break;
265 #endif
266 	default:
267 		if_printf(ifp, "can't handle af%d\n", dst->sa_family);
268 		if (m != NULL)
269 			m_freem(m);
270 		return (EAFNOSUPPORT);
271 	}
272 
273 	if (error == EHOSTDOWN) {
274 		if (ro != NULL && (ro->ro_flags & RT_HAS_GW) != 0)
275 			error = EHOSTUNREACH;
276 	}
277 
278 	if (error != 0)
279 		return (error);
280 
281 	*pflags = RT_MAY_LOOP;
282 	if (lleflags & LLE_IFADDR)
283 		*pflags |= RT_L2_ME;
284 
285 	return (0);
286 }
287 
288 /*
289  * Infiniband output routine.
290  */
291 static int
292 infiniband_output(struct ifnet *ifp, struct mbuf *m,
293     const struct sockaddr *dst, struct route *ro)
294 {
295 	uint8_t linkhdr[INFINIBAND_HDR_LEN];
296 	uint8_t *phdr;
297 	struct llentry *lle = NULL;
298 	struct infiniband_header *ih;
299 	int error = 0;
300 	int hlen;	/* link layer header length */
301 	uint32_t pflags;
302 	bool addref;
303 
304 	NET_EPOCH_ASSERT();
305 
306 	addref = false;
307 	phdr = NULL;
308 	pflags = 0;
309 	if (ro != NULL) {
310 		/* XXX BPF uses ro_prepend */
311 		if (ro->ro_prepend != NULL) {
312 			phdr = ro->ro_prepend;
313 			hlen = ro->ro_plen;
314 		} else if (!(m->m_flags & (M_BCAST | M_MCAST))) {
315 			if ((ro->ro_flags & RT_LLE_CACHE) != 0) {
316 				lle = ro->ro_lle;
317 				if (lle != NULL &&
318 				    (lle->la_flags & LLE_VALID) == 0) {
319 					LLE_FREE(lle);
320 					lle = NULL;	/* redundant */
321 					ro->ro_lle = NULL;
322 				}
323 				if (lle == NULL) {
324 					/* if we lookup, keep cache */
325 					addref = 1;
326 				} else
327 					/*
328 					 * Notify LLE code that
329 					 * the entry was used
330 					 * by datapath.
331 					 */
332 					llentry_mark_used(lle);
333 			}
334 			if (lle != NULL) {
335 				phdr = lle->r_linkdata;
336 				hlen = lle->r_hdrlen;
337 				pflags = lle->r_flags;
338 			}
339 		}
340 	}
341 
342 #ifdef MAC
343 	error = mac_ifnet_check_transmit(ifp, m);
344 	if (error)
345 		goto bad;
346 #endif
347 
348 	M_PROFILE(m);
349 	if (ifp->if_flags & IFF_MONITOR) {
350 		error = ENETDOWN;
351 		goto bad;
352 	}
353 	if (!((ifp->if_flags & IFF_UP) &&
354 	    (ifp->if_drv_flags & IFF_DRV_RUNNING))) {
355 		error = ENETDOWN;
356 		goto bad;
357 	}
358 
359 	if (phdr == NULL) {
360 		/* No prepend data supplied. Try to calculate ourselves. */
361 		phdr = linkhdr;
362 		hlen = INFINIBAND_HDR_LEN;
363 		error = infiniband_resolve_addr(ifp, m, dst, ro, phdr, &pflags,
364 		    addref ? &lle : NULL);
365 		if (addref && lle != NULL)
366 			ro->ro_lle = lle;
367 		if (error != 0)
368 			return (error == EWOULDBLOCK ? 0 : error);
369 	}
370 
371 	if ((pflags & RT_L2_ME) != 0) {
372 		update_mbuf_csumflags(m, m);
373 		return (if_simloop(ifp, m, dst->sa_family, 0));
374 	}
375 
376 	/*
377 	 * Add local infiniband header. If no space in first mbuf,
378 	 * allocate another.
379 	 */
380 	M_PREPEND(m, INFINIBAND_HDR_LEN, M_NOWAIT);
381 	if (m == NULL) {
382 		error = ENOBUFS;
383 		goto bad;
384 	}
385 	if ((pflags & RT_HAS_HEADER) == 0) {
386 		ih = mtod(m, struct infiniband_header *);
387 		memcpy(ih, phdr, hlen);
388 	}
389 
390 	/*
391 	 * Queue message on interface, update output statistics if
392 	 * successful, and start output if interface not yet active.
393 	 */
394 	return (ifp->if_transmit(ifp, m));
395 bad:
396 	if (m != NULL)
397 		m_freem(m);
398 	return (error);
399 }
400 
401 /*
402  * Process a received Infiniband packet.
403  */
404 static void
405 infiniband_input(struct ifnet *ifp, struct mbuf *m)
406 {
407 	struct infiniband_header *ibh;
408 	struct epoch_tracker et;
409 	int isr;
410 
411 	CURVNET_SET_QUIET(ifp->if_vnet);
412 
413 	if ((ifp->if_flags & IFF_UP) == 0) {
414 		if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
415 		m_freem(m);
416 		goto done;
417 	}
418 
419 	ibh = mtod(m, struct infiniband_header *);
420 
421 	/*
422 	 * Reset layer specific mbuf flags to avoid confusing upper
423 	 * layers:
424 	 */
425 	m->m_flags &= ~M_VLANTAG;
426 	m_clrprotoflags(m);
427 
428 	if (INFINIBAND_IS_MULTICAST(ibh->ib_hwaddr)) {
429 		if (memcmp(ibh->ib_hwaddr, ifp->if_broadcastaddr,
430 		    ifp->if_addrlen) == 0)
431 			m->m_flags |= M_BCAST;
432 		else
433 			m->m_flags |= M_MCAST;
434 		if_inc_counter(ifp, IFCOUNTER_IMCASTS, 1);
435 	}
436 
437 	/* Let BPF have it before we strip the header. */
438 	INFINIBAND_BPF_MTAP(ifp, m);
439 
440 	/* Allow monitor mode to claim this frame, after stats are updated. */
441 	if (ifp->if_flags & IFF_MONITOR) {
442 		m_freem(m);
443 		goto done;
444 	}
445 
446 	/* Direct packet to correct FIB based on interface config. */
447 	M_SETFIB(m, ifp->if_fib);
448 
449 	/* Handle input from a lagg<N> port */
450 	if (ifp->if_type == IFT_INFINIBANDLAG) {
451 		KASSERT(lagg_input_infiniband_p != NULL,
452 		    ("%s: if_lagg not loaded!", __func__));
453 		m = (*lagg_input_infiniband_p)(ifp, m);
454 		if (__predict_false(m == NULL))
455 			goto done;
456 		ifp = m->m_pkthdr.rcvif;
457 	}
458 
459 	/*
460 	 * Dispatch frame to upper layer.
461 	 */
462 	switch (ibh->ib_protocol) {
463 #ifdef INET
464 	case htons(ETHERTYPE_IP):
465 		isr = NETISR_IP;
466 		break;
467 
468 	case htons(ETHERTYPE_ARP):
469 		if (ifp->if_flags & IFF_NOARP) {
470 			/* Discard packet if ARP is disabled on interface */
471 			m_freem(m);
472 			goto done;
473 		}
474 		isr = NETISR_ARP;
475 		break;
476 #endif
477 #ifdef INET6
478 	case htons(ETHERTYPE_IPV6):
479 		isr = NETISR_IPV6;
480 		break;
481 #endif
482 	default:
483 		if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
484 		m_freem(m);
485 		goto done;
486 	}
487 
488 	/* Strip off the Infiniband header. */
489 	m_adj(m, INFINIBAND_HDR_LEN);
490 
491 #ifdef MAC
492 	/*
493 	 * Tag the mbuf with an appropriate MAC label before any other
494 	 * consumers can get to it.
495 	 */
496 	mac_ifnet_create_mbuf(ifp, m);
497 #endif
498 	/* Allow monitor mode to claim this frame, after stats are updated. */
499 	NET_EPOCH_ENTER(et);
500 	netisr_dispatch(isr, m);
501 	NET_EPOCH_EXIT(et);
502 done:
503 	CURVNET_RESTORE();
504 }
505 
506 static int
507 infiniband_resolvemulti(struct ifnet *ifp, struct sockaddr **llsa,
508     struct sockaddr *sa)
509 {
510 	struct sockaddr_dl *sdl;
511 #ifdef INET
512 	struct sockaddr_in *sin;
513 #endif
514 #ifdef INET6
515 	struct sockaddr_in6 *sin6;
516 #endif
517 	uint8_t *e_addr;
518 
519 	switch (sa->sa_family) {
520 	case AF_LINK:
521 		/*
522 		 * No mapping needed. Just check that it's a valid MC address.
523 		 */
524 		sdl = (struct sockaddr_dl *)sa;
525 		e_addr = LLADDR(sdl);
526 		if (!INFINIBAND_IS_MULTICAST(e_addr))
527 			return (EADDRNOTAVAIL);
528 		*llsa = NULL;
529 		return 0;
530 
531 #ifdef INET
532 	case AF_INET:
533 		sin = (struct sockaddr_in *)sa;
534 		if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr)))
535 			return (EADDRNOTAVAIL);
536 		sdl = link_init_sdl(ifp, *llsa, IFT_INFINIBAND);
537 		sdl->sdl_alen = INFINIBAND_ADDR_LEN;
538 		e_addr = LLADDR(sdl);
539 		infiniband_ipv4_multicast_map(
540 		    sin->sin_addr.s_addr, ifp->if_broadcastaddr, e_addr);
541 		*llsa = (struct sockaddr *)sdl;
542 		return (0);
543 #endif
544 #ifdef INET6
545 	case AF_INET6:
546 		sin6 = (struct sockaddr_in6 *)sa;
547 		/*
548 		 * An IP6 address of 0 means listen to all of the
549 		 * multicast address used for IP6. This has no meaning
550 		 * in infiniband.
551 		 */
552 		if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
553 			return (EADDRNOTAVAIL);
554 		if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))
555 			return (EADDRNOTAVAIL);
556 		sdl = link_init_sdl(ifp, *llsa, IFT_INFINIBAND);
557 		sdl->sdl_alen = INFINIBAND_ADDR_LEN;
558 		e_addr = LLADDR(sdl);
559 		infiniband_ipv6_multicast_map(
560 		    &sin6->sin6_addr, ifp->if_broadcastaddr, e_addr);
561 		*llsa = (struct sockaddr *)sdl;
562 		return (0);
563 #endif
564 	default:
565 		return (EAFNOSUPPORT);
566 	}
567 }
568 
569 void
570 infiniband_ifattach(struct ifnet *ifp, const uint8_t *lla, const uint8_t *llb)
571 {
572 	struct sockaddr_dl *sdl;
573 	struct ifaddr *ifa;
574 	int i;
575 
576 	ifp->if_addrlen = INFINIBAND_ADDR_LEN;
577 	ifp->if_hdrlen = INFINIBAND_HDR_LEN;
578 	ifp->if_mtu = INFINIBAND_MTU;
579 	if_attach(ifp);
580 	ifp->if_output = infiniband_output;
581 	ifp->if_input = infiniband_input;
582 	ifp->if_resolvemulti = infiniband_resolvemulti;
583 	ifp->if_requestencap = infiniband_requestencap;
584 
585 	if (ifp->if_baudrate == 0)
586 		ifp->if_baudrate = IF_Gbps(10); /* default value */
587 	if (llb != NULL)
588 		ifp->if_broadcastaddr = llb;
589 
590 	ifa = ifp->if_addr;
591 	KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__));
592 	sdl = (struct sockaddr_dl *)ifa->ifa_addr;
593 	sdl->sdl_type = IFT_INFINIBAND;
594 	sdl->sdl_alen = ifp->if_addrlen;
595 
596 	if (lla != NULL) {
597 		memcpy(LLADDR(sdl), lla, ifp->if_addrlen);
598 
599 		if (ifp->if_hw_addr != NULL)
600 			memcpy(ifp->if_hw_addr, lla, ifp->if_addrlen);
601 	} else {
602 		lla = LLADDR(sdl);
603 	}
604 
605 	/* Attach ethernet compatible network device */
606 	bpfattach(ifp, DLT_EN10MB, ETHER_HDR_LEN);
607 
608 	/* Announce Infiniband MAC address if non-zero. */
609 	for (i = 0; i < ifp->if_addrlen; i++)
610 		if (lla[i] != 0)
611 			break;
612 	if (i != ifp->if_addrlen)
613 		if_printf(ifp, "Infiniband address: %20D\n", lla, ":");
614 
615 	/* Add necessary bits are setup; announce it now. */
616 	EVENTHANDLER_INVOKE(infiniband_ifattach_event, ifp);
617 
618 	if (IS_DEFAULT_VNET(curvnet))
619 		devctl_notify("INFINIBAND", ifp->if_xname, "IFATTACH", NULL);
620 }
621 
622 /*
623  * Perform common duties while detaching an Infiniband interface
624  */
625 void
626 infiniband_ifdetach(struct ifnet *ifp)
627 {
628 	bpfdetach(ifp);
629 	if_detach(ifp);
630 }
631 
632 static int
633 infiniband_modevent(module_t mod, int type, void *data)
634 {
635 	switch (type) {
636 	case MOD_LOAD:
637 	case MOD_UNLOAD:
638 		return (0);
639 	default:
640 		return (EOPNOTSUPP);
641 	}
642 }
643 
644 static moduledata_t infiniband_mod = {
645 	.name = "if_infiniband",
646 	.evhand = &infiniband_modevent,
647 };
648 
649 DECLARE_MODULE(if_infiniband, infiniband_mod, SI_SUB_INIT_IF, SI_ORDER_ANY);
650 MODULE_VERSION(if_infiniband, 1);
651