2 * Copyright (c) 1982, 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#)if_ethersubr.c 8.1 (Berkeley) 6/10/93
30 * $FreeBSD: src/sys/net/if_ethersubr.c,v 1.70.2.33 2003/04/28 15:45:53 archie Exp $
34 #include "opt_inet6.h"
36 #include "opt_netgraph.h"
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/globaldata.h>
43 #include <sys/kernel.h>
46 #include <sys/malloc.h>
48 #include <sys/msgport.h>
49 #include <sys/socket.h>
50 #include <sys/sockio.h>
51 #include <sys/sysctl.h>
52 #include <sys/thread.h>
54 #include <sys/thread2.h>
55 #include <sys/mplock2.h>
58 #include <net/netisr.h>
59 #include <net/route.h>
60 #include <net/if_llc.h>
61 #include <net/if_dl.h>
62 #include <net/if_types.h>
63 #include <net/ifq_var.h>
65 #include <net/ethernet.h>
66 #include <net/vlan/if_vlan_ether.h>
67 #include <net/vlan/if_vlan_var.h>
68 #include <net/netmsg2.h>
69 #include <net/netisr2.h>
71 #if defined(INET) || defined(INET6)
72 #include <netinet/in.h>
73 #include <netinet/ip_var.h>
74 #include <netinet/tcp_var.h>
75 #include <netinet/if_ether.h>
76 #include <netinet/ip_flow.h>
77 #include <net/ipfw/ip_fw.h>
78 #include <net/ipfw3/ip_fw.h>
79 #include <net/dummynet/ip_dummynet.h>
82 #include <netinet6/nd6.h>
86 #include <netinet/ip_carp.h>
90 #include <netproto/mpls/mpls.h>
93 /* netgraph node hooks for ng_ether(4) */
94 void (*ng_ether_input_p
)(struct ifnet
*ifp
, struct mbuf
**mp
);
95 void (*ng_ether_input_orphan_p
)(struct ifnet
*ifp
, struct mbuf
*m
);
96 int (*ng_ether_output_p
)(struct ifnet
*ifp
, struct mbuf
**mp
);
97 void (*ng_ether_attach_p
)(struct ifnet
*ifp
);
98 void (*ng_ether_detach_p
)(struct ifnet
*ifp
);
100 void (*vlan_input_p
)(struct mbuf
*);
102 static int ether_output(struct ifnet
*, struct mbuf
*, struct sockaddr
*,
104 static void ether_restore_header(struct mbuf
**, const struct ether_header
*,
105 const struct ether_header
*);
106 static int ether_characterize(struct mbuf
**);
107 static void ether_dispatch(int, struct mbuf
*, int);
112 struct mbuf
*(*bridge_input_p
)(struct ifnet
*, struct mbuf
*);
113 int (*bridge_output_p
)(struct ifnet
*, struct mbuf
*);
114 void (*bridge_dn_p
)(struct mbuf
*, struct ifnet
*);
115 struct ifnet
*(*bridge_interface_p
)(void *if_bridge
);
117 static int ether_resolvemulti(struct ifnet
*, struct sockaddr
**,
123 void (*lagg_input_p
)(struct ifnet
*, struct mbuf
*);
124 int (*lagg_output_p
)(struct ifnet
*, struct mbuf
*);
126 const uint8_t etherbroadcastaddr
[ETHER_ADDR_LEN
] = {
127 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
130 #define gotoerr(e) do { error = (e); goto bad; } while (0)
131 #define IFP2AC(ifp) ((struct arpcom *)(ifp))
133 static boolean_t
ether_ipfw_chk(struct mbuf
**m0
, struct ifnet
*dst
,
135 const struct ether_header
*eh
);
137 static int ether_ipfw
;
138 static u_long ether_restore_hdr
;
139 static u_long ether_prepend_hdr
;
140 static u_long ether_input_wronghash
;
141 static int ether_debug
;
144 static u_long ether_pktinfo_try
;
145 static u_long ether_pktinfo_hit
;
146 static u_long ether_rss_nopi
;
147 static u_long ether_rss_nohash
;
148 static u_long ether_input_requeue
;
150 static u_long ether_input_wronghwhash
;
151 static int ether_input_ckhash
;
153 #define ETHER_TSOLEN_DEFAULT (4 * ETHERMTU)
155 #define ETHER_NMBCLUSTERS_DEFMIN 32
156 #define ETHER_NMBCLUSTERS_DEFAULT 256
158 static int ether_tsolen_default
= ETHER_TSOLEN_DEFAULT
;
159 TUNABLE_INT("net.link.ether.tsolen", ðer_tsolen_default
);
161 static int ether_nmbclusters_default
= ETHER_NMBCLUSTERS_DEFAULT
;
162 TUNABLE_INT("net.link.ether.nmbclusters", ðer_nmbclusters_default
);
164 SYSCTL_DECL(_net_link
);
165 SYSCTL_NODE(_net_link
, IFT_ETHER
, ether
, CTLFLAG_RW
, 0, "Ethernet");
166 SYSCTL_INT(_net_link_ether
, OID_AUTO
, debug
, CTLFLAG_RW
,
167 ðer_debug
, 0, "Ether debug");
168 SYSCTL_INT(_net_link_ether
, OID_AUTO
, ipfw
, CTLFLAG_RW
,
169 ðer_ipfw
, 0, "Pass ether pkts through firewall");
170 SYSCTL_ULONG(_net_link_ether
, OID_AUTO
, restore_hdr
, CTLFLAG_RW
,
171 ðer_restore_hdr
, 0, "# of ether header restoration");
172 SYSCTL_ULONG(_net_link_ether
, OID_AUTO
, prepend_hdr
, CTLFLAG_RW
,
173 ðer_prepend_hdr
, 0,
174 "# of ether header restoration which prepends mbuf");
175 SYSCTL_ULONG(_net_link_ether
, OID_AUTO
, input_wronghash
, CTLFLAG_RW
,
176 ðer_input_wronghash
, 0, "# of input packets with wrong hash");
177 SYSCTL_INT(_net_link_ether
, OID_AUTO
, tsolen
, CTLFLAG_RW
,
178 ðer_tsolen_default
, 0, "Default max TSO length");
181 SYSCTL_ULONG(_net_link_ether
, OID_AUTO
, rss_nopi
, CTLFLAG_RW
,
182 ðer_rss_nopi
, 0, "# of packets do not have pktinfo");
183 SYSCTL_ULONG(_net_link_ether
, OID_AUTO
, rss_nohash
, CTLFLAG_RW
,
184 ðer_rss_nohash
, 0, "# of packets do not have hash");
185 SYSCTL_ULONG(_net_link_ether
, OID_AUTO
, pktinfo_try
, CTLFLAG_RW
,
186 ðer_pktinfo_try
, 0,
187 "# of tries to find packets' msgport using pktinfo");
188 SYSCTL_ULONG(_net_link_ether
, OID_AUTO
, pktinfo_hit
, CTLFLAG_RW
,
189 ðer_pktinfo_hit
, 0,
190 "# of packets whose msgport are found using pktinfo");
191 SYSCTL_ULONG(_net_link_ether
, OID_AUTO
, input_requeue
, CTLFLAG_RW
,
192 ðer_input_requeue
, 0, "# of input packets gets requeued");
194 SYSCTL_ULONG(_net_link_ether
, OID_AUTO
, input_wronghwhash
, CTLFLAG_RW
,
195 ðer_input_wronghwhash
, 0, "# of input packets with wrong hw hash");
196 SYSCTL_INT(_net_link_ether
, OID_AUTO
, always_ckhash
, CTLFLAG_RW
,
197 ðer_input_ckhash
, 0, "always check hash");
199 #define ETHER_KTR_STR "ifp=%p"
200 #define ETHER_KTR_ARGS struct ifnet *ifp
202 #define KTR_ETHERNET KTR_ALL
204 KTR_INFO_MASTER(ether
);
205 KTR_INFO(KTR_ETHERNET
, ether
, pkt_beg
, 0, ETHER_KTR_STR
, ETHER_KTR_ARGS
);
206 KTR_INFO(KTR_ETHERNET
, ether
, pkt_end
, 1, ETHER_KTR_STR
, ETHER_KTR_ARGS
);
207 KTR_INFO(KTR_ETHERNET
, ether
, disp_beg
, 2, ETHER_KTR_STR
, ETHER_KTR_ARGS
);
208 KTR_INFO(KTR_ETHERNET
, ether
, disp_end
, 3, ETHER_KTR_STR
, ETHER_KTR_ARGS
);
209 #define logether(name, arg) KTR_LOG(ether_ ## name, arg)
212 * Ethernet output routine.
213 * Encapsulate a packet of type family for the local net.
214 * Use trailer local net encapsulation if enough data in first
215 * packet leaves a multiple of 512 bytes of data in remainder.
216 * Assumes that ifp is actually pointer to arpcom structure.
219 ether_output(struct ifnet
*ifp
, struct mbuf
*m
, struct sockaddr
*dst
,
222 struct ether_header
*eh
, *deh
;
225 int hlen
= ETHER_HDR_LEN
; /* link layer header length */
226 struct arpcom
*ac
= IFP2AC(ifp
);
229 ASSERT_NETISR_NCPUS(mycpuid
);
230 ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp
);
232 if (ifp
->if_flags
& IFF_MONITOR
)
234 if ((ifp
->if_flags
& (IFF_UP
| IFF_RUNNING
)) != (IFF_UP
| IFF_RUNNING
))
237 M_PREPEND(m
, sizeof(struct ether_header
), M_NOWAIT
);
240 m
->m_pkthdr
.csum_lhlen
= sizeof(struct ether_header
);
241 eh
= mtod(m
, struct ether_header
*);
242 edst
= eh
->ether_dhost
;
245 * Fill in the destination ethernet address and frame type.
247 switch (dst
->sa_family
) {
250 if (!arpresolve(ifp
, rt
, m
, dst
, edst
))
251 return (0); /* if not yet resolved */
253 if (m
->m_flags
& M_MPLSLABELED
)
254 eh
->ether_type
= htons(ETHERTYPE_MPLS
);
257 eh
->ether_type
= htons(ETHERTYPE_IP
);
262 if (!nd6_storelladdr(&ac
->ac_if
, rt
, m
, dst
, edst
))
263 return (0); /* Something bad happenned. */
264 eh
->ether_type
= htons(ETHERTYPE_IPV6
);
267 case pseudo_AF_HDRCMPLT
:
269 loop_copy
= -1; /* if this is for us, don't do it */
270 deh
= (struct ether_header
*)dst
->sa_data
;
271 memcpy(edst
, deh
->ether_dhost
, ETHER_ADDR_LEN
);
272 eh
->ether_type
= deh
->ether_type
;
276 if_printf(ifp
, "can't handle af%d\n", dst
->sa_family
);
277 gotoerr(EAFNOSUPPORT
);
280 if (dst
->sa_family
== pseudo_AF_HDRCMPLT
) /* unlikely */
281 memcpy(eh
->ether_shost
,
282 ((struct ether_header
*)dst
->sa_data
)->ether_shost
,
285 memcpy(eh
->ether_shost
, ac
->ac_enaddr
, ETHER_ADDR_LEN
);
288 * Bridges require special output handling.
290 if (ifp
->if_bridge
) {
291 KASSERT(bridge_output_p
!= NULL
,
292 ("%s: if_bridge not loaded!", __func__
));
293 return bridge_output_p(ifp
, m
);
297 KASSERT(lagg_output_p
!= NULL
,
298 ("%s: if_lagg not loaded!", __func__
));
299 return lagg_output_p(ifp
, m
);
304 * If a simplex interface, and the packet is being sent to our
305 * Ethernet address or a broadcast address, loopback a copy.
306 * XXX To make a simplex device behave exactly like a duplex
307 * device, we should copy in the case of sending to our own
308 * ethernet address (thus letting the original actually appear
309 * on the wire). However, we don't do that here for security
310 * reasons and compatibility with the original behavior.
312 if ((ifp
->if_flags
& IFF_SIMPLEX
) && (loop_copy
!= -1)) {
315 if (m
->m_pkthdr
.csum_flags
& CSUM_IP
)
316 csum_flags
|= (CSUM_IP_CHECKED
| CSUM_IP_VALID
);
317 if (m
->m_pkthdr
.csum_flags
& CSUM_DELAY_DATA
)
318 csum_flags
|= (CSUM_DATA_VALID
| CSUM_PSEUDO_HDR
);
319 if ((m
->m_flags
& M_BCAST
) || (loop_copy
> 0)) {
322 if ((n
= m_copypacket(m
, M_NOWAIT
)) != NULL
) {
323 n
->m_pkthdr
.csum_flags
|= csum_flags
;
324 if (csum_flags
& CSUM_DATA_VALID
)
325 n
->m_pkthdr
.csum_data
= 0xffff;
326 if_simloop(ifp
, n
, dst
->sa_family
, hlen
);
328 IFNET_STAT_INC(ifp
, iqdrops
, 1);
329 } else if (bcmp(eh
->ether_dhost
, eh
->ether_shost
,
330 ETHER_ADDR_LEN
) == 0) {
331 m
->m_pkthdr
.csum_flags
|= csum_flags
;
332 if (csum_flags
& CSUM_DATA_VALID
)
333 m
->m_pkthdr
.csum_data
= 0xffff;
334 if_simloop(ifp
, m
, dst
->sa_family
, hlen
);
335 return (0); /* XXX */
340 if (ifp
->if_type
== IFT_CARP
) {
341 ifp
= carp_parent(ifp
);
343 gotoerr(ENETUNREACH
);
348 * Check precondition again
350 ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp
);
352 if (ifp
->if_flags
& IFF_MONITOR
)
354 if ((ifp
->if_flags
& (IFF_UP
| IFF_RUNNING
)) !=
355 (IFF_UP
| IFF_RUNNING
))
360 /* Handle ng_ether(4) processing, if any */
361 if (ng_ether_output_p
!= NULL
) {
363 * Hold BGL and recheck ng_ether_output_p
366 if (ng_ether_output_p
!= NULL
) {
367 if ((error
= ng_ether_output_p(ifp
, &m
)) != 0) {
379 /* Continue with link-layer output */
380 return ether_output_frame(ifp
, m
);
388 * Returns the bridge interface an ifp is associated
391 * Only call if ifp->if_bridge != NULL.
394 ether_bridge_interface(struct ifnet
*ifp
)
396 if (bridge_interface_p
)
397 return(bridge_interface_p(ifp
->if_bridge
));
402 * Ethernet link layer output routine to send a raw frame to the device.
404 * This assumes that the 14 byte Ethernet header is present and contiguous
408 ether_output_frame(struct ifnet
*ifp
, struct mbuf
*m
)
410 struct ip_fw
*rule
= NULL
;
412 struct altq_pktattr pktattr
;
414 ASSERT_IFNET_NOT_SERIALIZED_ALL(ifp
);
416 if (m
->m_pkthdr
.fw_flags
& DUMMYNET_MBUF_TAGGED
) {
419 /* Extract info from dummynet tag */
420 mtag
= m_tag_find(m
, PACKET_TAG_DUMMYNET
, NULL
);
421 KKASSERT(mtag
!= NULL
);
422 rule
= ((struct dn_pkt
*)m_tag_data(mtag
))->dn_priv
;
423 KKASSERT(rule
!= NULL
);
425 m_tag_delete(m
, mtag
);
426 m
->m_pkthdr
.fw_flags
&= ~DUMMYNET_MBUF_TAGGED
;
429 if (ifq_is_enabled(&ifp
->if_snd
))
430 altq_etherclassify(&ifp
->if_snd
, m
, &pktattr
);
432 if ((IPFW_LOADED
|| IPFW3_LOADED
) && ether_ipfw
!= 0) {
433 struct ether_header save_eh
, *eh
;
435 eh
= mtod(m
, struct ether_header
*);
437 m_adj(m
, ETHER_HDR_LEN
);
438 if (!ether_ipfw_chk(&m
, ifp
, &rule
, eh
)) {
442 return ENOBUFS
; /* pkt dropped */
444 return 0; /* consumed e.g. in a pipe */
447 /* packet was ok, restore the ethernet header */
448 ether_restore_header(&m
, eh
, &save_eh
);
457 * Queue message on interface, update output statistics if
458 * successful, and start output if interface not yet active.
460 error
= ifq_dispatch(ifp
, m
, &pktattr
);
465 * ipfw processing for ethernet packets (in and out).
466 * The second parameter is NULL from ether_demux(), and ifp from
467 * ether_output_frame().
470 ether_ipfw_chk(struct mbuf
**m0
, struct ifnet
*dst
, struct ip_fw
**rule
,
471 const struct ether_header
*eh
)
473 struct ether_header save_eh
= *eh
; /* might be a ptr in *m0 */
474 struct ip_fw_args args
;
479 if (*rule
!= NULL
&& fw_one_pass
)
480 return TRUE
; /* dummynet packet, already partially processed */
483 * I need some amount of data to be contiguous.
485 i
= min((*m0
)->m_pkthdr
.len
, max_protohdr
);
486 if ((*m0
)->m_len
< i
) {
487 *m0
= m_pullup(*m0
, i
);
495 if ((mtag
= m_tag_find(*m0
, PACKET_TAG_IPFW_DIVERT
, NULL
)) != NULL
)
496 m_tag_delete(*m0
, mtag
);
497 if ((*m0
)->m_pkthdr
.fw_flags
& IPFORWARD_MBUF_TAGGED
) {
498 mtag
= m_tag_find(*m0
, PACKET_TAG_IPFORWARD
, NULL
);
499 KKASSERT(mtag
!= NULL
);
500 m_tag_delete(*m0
, mtag
);
501 (*m0
)->m_pkthdr
.fw_flags
&= ~IPFORWARD_MBUF_TAGGED
;
505 args
.m
= *m0
; /* the packet we are looking at */
506 args
.oif
= dst
; /* destination, if any */
507 args
.rule
= *rule
; /* matching rule to restart */
508 args
.eh
= &save_eh
; /* MAC header for bridged/MAC packets */
509 i
= ip_fw_chk_ptr(&args
);
524 * XXX at some point add support for divert/forward actions.
525 * If none of the above matches, we have to drop the pkt.
531 * Pass the pkt to dummynet, which consumes it.
533 m
= *m0
; /* pass the original to dummynet */
534 *m0
= NULL
; /* and nothing back to the caller */
536 ether_restore_header(&m
, eh
, &save_eh
);
540 m
= ip_fw_dn_io_ptr(m
, args
.cookie
,
541 dst
? DN_TO_ETH_OUT
: DN_TO_ETH_DEMUX
, &args
);
547 panic("unknown ipfw return value: %d", i
);
552 * Perform common duties while attaching to interface list
555 ether_ifattach(struct ifnet
*ifp
, const uint8_t *lla
,
556 lwkt_serialize_t serializer
)
558 ether_ifattach_bpf(ifp
, lla
, DLT_EN10MB
, sizeof(struct ether_header
),
563 ether_ifattach_bpf(struct ifnet
*ifp
, const uint8_t *lla
,
564 u_int dlt
, u_int hdrlen
, lwkt_serialize_t serializer
)
566 struct sockaddr_dl
*sdl
;
567 char ethstr
[ETHER_ADDRSTRLEN
+ 1];
572 * If driver does not configure # of mbuf clusters/jclusters
573 * that could sit on the device queues for quite some time,
575 * - The device queues only consume mbuf clusters.
576 * - No more than ether_nmbclusters_default (by default 256)
577 * mbuf clusters will sit on the device queues for quite
580 if (ifp
->if_nmbclusters
<= 0 && ifp
->if_nmbjclusters
<= 0) {
581 if (ether_nmbclusters_default
< ETHER_NMBCLUSTERS_DEFMIN
) {
582 kprintf("ether nmbclusters %d -> %d\n",
583 ether_nmbclusters_default
,
584 ETHER_NMBCLUSTERS_DEFAULT
);
585 ether_nmbclusters_default
= ETHER_NMBCLUSTERS_DEFAULT
;
587 ifp
->if_nmbclusters
= ether_nmbclusters_default
;
590 ifp
->if_type
= IFT_ETHER
;
591 ifp
->if_addrlen
= ETHER_ADDR_LEN
;
592 ifp
->if_hdrlen
= ETHER_HDR_LEN
;
593 if_attach(ifp
, serializer
);
595 for (i
= 0; i
< ifq
->altq_subq_cnt
; ++i
) {
596 struct ifaltq_subque
*ifsq
= ifq_get_subq(ifq
, i
);
598 ifsq
->ifsq_maxbcnt
= ifsq
->ifsq_maxlen
*
599 (ETHER_MAX_LEN
- ETHER_CRC_LEN
);
601 ifp
->if_mtu
= ETHERMTU
;
602 if (ifp
->if_tsolen
<= 0) {
603 if ((ether_tsolen_default
/ ETHERMTU
) < 2) {
604 kprintf("ether TSO maxlen %d -> %d\n",
605 ether_tsolen_default
, ETHER_TSOLEN_DEFAULT
);
606 ether_tsolen_default
= ETHER_TSOLEN_DEFAULT
;
608 ifp
->if_tsolen
= ether_tsolen_default
;
610 if (ifp
->if_baudrate
== 0)
611 ifp
->if_baudrate
= 10000000;
612 ifp
->if_output
= ether_output
;
613 ifp
->if_input
= ether_input
;
614 ifp
->if_resolvemulti
= ether_resolvemulti
;
615 ifp
->if_broadcastaddr
= etherbroadcastaddr
;
616 sdl
= IF_LLSOCKADDR(ifp
);
617 sdl
->sdl_type
= IFT_ETHER
;
618 sdl
->sdl_alen
= ifp
->if_addrlen
;
619 bcopy(lla
, LLADDR(sdl
), ifp
->if_addrlen
);
621 * XXX Keep the current drivers happy.
622 * XXX Remove once all drivers have been cleaned up
624 if (lla
!= IFP2AC(ifp
)->ac_enaddr
)
625 bcopy(lla
, IFP2AC(ifp
)->ac_enaddr
, ifp
->if_addrlen
);
626 bpfattach(ifp
, dlt
, hdrlen
);
627 if (ng_ether_attach_p
!= NULL
)
628 (*ng_ether_attach_p
)(ifp
);
630 if_printf(ifp
, "MAC address: %s\n", kether_ntoa(lla
, ethstr
));
634 * Perform common duties while detaching an Ethernet interface
637 ether_ifdetach(struct ifnet
*ifp
)
641 if (ng_ether_detach_p
!= NULL
)
642 (*ng_ether_detach_p
)(ifp
);
648 ether_ioctl(struct ifnet
*ifp
, u_long command
, caddr_t data
)
650 struct ifaddr
*ifa
= (struct ifaddr
*) data
;
651 struct ifreq
*ifr
= (struct ifreq
*) data
;
654 #define IF_INIT(ifp) \
656 if (((ifp)->if_flags & IFF_UP) == 0) { \
657 (ifp)->if_flags |= IFF_UP; \
658 (ifp)->if_init((ifp)->if_softc); \
662 ASSERT_IFNET_SERIALIZED_ALL(ifp
);
666 switch (ifa
->ifa_addr
->sa_family
) {
669 IF_INIT(ifp
); /* before arpwhohas */
670 arp_ifinit(ifp
, ifa
);
680 bcopy(IFP2AC(ifp
)->ac_enaddr
,
681 ((struct sockaddr
*)ifr
->ifr_data
)->sa_data
,
687 * Set the interface MTU.
689 if (ifr
->ifr_mtu
> ETHERMTU
) {
692 ifp
->if_mtu
= ifr
->ifr_mtu
;
707 struct sockaddr
**llsa
,
710 struct sockaddr_dl
*sdl
;
712 struct sockaddr_in
*sin
;
715 struct sockaddr_in6
*sin6
;
719 switch(sa
->sa_family
) {
722 * No mapping needed. Just check that it's a valid MC address.
724 sdl
= (struct sockaddr_dl
*)sa
;
725 e_addr
= LLADDR(sdl
);
726 if ((e_addr
[0] & 1) != 1)
727 return EADDRNOTAVAIL
;
733 sin
= (struct sockaddr_in
*)sa
;
734 if (!IN_MULTICAST(ntohl(sin
->sin_addr
.s_addr
)))
735 return EADDRNOTAVAIL
;
736 sdl
= kmalloc(sizeof *sdl
, M_IFMADDR
, M_WAITOK
| M_ZERO
);
737 sdl
->sdl_len
= sizeof *sdl
;
738 sdl
->sdl_family
= AF_LINK
;
739 sdl
->sdl_index
= ifp
->if_index
;
740 sdl
->sdl_type
= IFT_ETHER
;
741 sdl
->sdl_alen
= ETHER_ADDR_LEN
;
742 e_addr
= LLADDR(sdl
);
743 ETHER_MAP_IP_MULTICAST(&sin
->sin_addr
, e_addr
);
744 *llsa
= (struct sockaddr
*)sdl
;
749 sin6
= (struct sockaddr_in6
*)sa
;
750 if (IN6_IS_ADDR_UNSPECIFIED(&sin6
->sin6_addr
)) {
752 * An IP6 address of 0 means listen to all
753 * of the Ethernet multicast address used for IP6.
754 * (This is used for multicast routers.)
756 ifp
->if_flags
|= IFF_ALLMULTI
;
760 if (!IN6_IS_ADDR_MULTICAST(&sin6
->sin6_addr
))
761 return EADDRNOTAVAIL
;
762 sdl
= kmalloc(sizeof *sdl
, M_IFMADDR
, M_WAITOK
| M_ZERO
);
763 sdl
->sdl_len
= sizeof *sdl
;
764 sdl
->sdl_family
= AF_LINK
;
765 sdl
->sdl_index
= ifp
->if_index
;
766 sdl
->sdl_type
= IFT_ETHER
;
767 sdl
->sdl_alen
= ETHER_ADDR_LEN
;
768 e_addr
= LLADDR(sdl
);
769 ETHER_MAP_IPV6_MULTICAST(&sin6
->sin6_addr
, e_addr
);
770 *llsa
= (struct sockaddr
*)sdl
;
776 * Well, the text isn't quite right, but it's the name
785 * This is for reference. We have a table-driven version
786 * of the little-endian crc32 generator, which is faster
787 * than the double-loop.
790 ether_crc32_le(const uint8_t *buf
, size_t len
)
792 uint32_t c
, crc
, carry
;
795 crc
= 0xffffffffU
; /* initial value */
797 for (i
= 0; i
< len
; i
++) {
799 for (j
= 0; j
< 8; j
++) {
800 carry
= ((crc
& 0x01) ? 1 : 0) ^ (c
& 0x01);
804 crc
= (crc
^ ETHER_CRC_POLY_LE
);
812 ether_crc32_le(const uint8_t *buf
, size_t len
)
814 static const uint32_t crctab
[] = {
815 0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac,
816 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c,
817 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c,
818 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c
823 crc
= 0xffffffffU
; /* initial value */
825 for (i
= 0; i
< len
; i
++) {
827 crc
= (crc
>> 4) ^ crctab
[crc
& 0xf];
828 crc
= (crc
>> 4) ^ crctab
[crc
& 0xf];
836 ether_crc32_be(const uint8_t *buf
, size_t len
)
838 uint32_t c
, crc
, carry
;
841 crc
= 0xffffffffU
; /* initial value */
843 for (i
= 0; i
< len
; i
++) {
845 for (j
= 0; j
< 8; j
++) {
846 carry
= ((crc
& 0x80000000U
) ? 1 : 0) ^ (c
& 0x01);
850 crc
= (crc
^ ETHER_CRC_POLY_BE
) | carry
;
858 * find the size of ethernet header, and call classifier
861 altq_etherclassify(struct ifaltq
*ifq
, struct mbuf
*m
,
862 struct altq_pktattr
*pktattr
)
864 struct ether_header
*eh
;
866 int hlen
, af
, hdrsize
;
868 hlen
= sizeof(struct ether_header
);
869 eh
= mtod(m
, struct ether_header
*);
871 ether_type
= ntohs(eh
->ether_type
);
872 if (ether_type
< ETHERMTU
) {
874 struct llc
*llc
= (struct llc
*)(eh
+ 1);
877 if (m
->m_len
< hlen
||
878 llc
->llc_dsap
!= LLC_SNAP_LSAP
||
879 llc
->llc_ssap
!= LLC_SNAP_LSAP
||
880 llc
->llc_control
!= LLC_UI
)
881 goto bad
; /* not snap! */
883 ether_type
= ntohs(llc
->llc_un
.type_snap
.ether_type
);
886 if (ether_type
== ETHERTYPE_IP
) {
888 hdrsize
= 20; /* sizeof(struct ip) */
890 } else if (ether_type
== ETHERTYPE_IPV6
) {
892 hdrsize
= 40; /* sizeof(struct ip6_hdr) */
897 while (m
->m_len
<= hlen
) {
901 if (m
->m_len
< hlen
+ hdrsize
) {
903 * ip header is not in a single mbuf. this should not
904 * happen in the current code.
905 * (todo: use m_pulldown in the future)
911 ifq_classify(ifq
, m
, af
, pktattr
);
918 pktattr
->pattr_class
= NULL
;
919 pktattr
->pattr_hdr
= NULL
;
920 pktattr
->pattr_af
= AF_UNSPEC
;
924 ether_restore_header(struct mbuf
**m0
, const struct ether_header
*eh
,
925 const struct ether_header
*save_eh
)
927 struct mbuf
*m
= *m0
;
932 * Prepend the header, optimize for the common case of
933 * eh pointing into the mbuf.
935 if ((const void *)(eh
+ 1) == (void *)m
->m_data
) {
936 m
->m_data
-= ETHER_HDR_LEN
;
937 m
->m_len
+= ETHER_HDR_LEN
;
938 m
->m_pkthdr
.len
+= ETHER_HDR_LEN
;
942 M_PREPEND(m
, ETHER_HDR_LEN
, M_NOWAIT
);
944 bcopy(save_eh
, mtod(m
, struct ether_header
*),
952 * Upper layer processing for a received Ethernet packet.
955 ether_demux_oncpu(struct ifnet
*ifp
, struct mbuf
*m
)
957 struct ether_header
*eh
;
958 int isr
, discard
= 0;
960 struct ip_fw
*rule
= NULL
;
963 KASSERT(m
->m_len
>= ETHER_HDR_LEN
,
964 ("ether header is not contiguous!"));
966 eh
= mtod(m
, struct ether_header
*);
968 if (m
->m_pkthdr
.fw_flags
& DUMMYNET_MBUF_TAGGED
) {
971 /* Extract info from dummynet tag */
972 mtag
= m_tag_find(m
, PACKET_TAG_DUMMYNET
, NULL
);
973 KKASSERT(mtag
!= NULL
);
974 rule
= ((struct dn_pkt
*)m_tag_data(mtag
))->dn_priv
;
975 KKASSERT(rule
!= NULL
);
977 m_tag_delete(m
, mtag
);
978 m
->m_pkthdr
.fw_flags
&= ~DUMMYNET_MBUF_TAGGED
;
980 /* packet is passing the second time */
985 * We got a packet which was unicast to a different Ethernet
986 * address. If the driver is working properly, then this
987 * situation can only happen when the interface is in
988 * promiscuous mode. We defer the packet discarding until the
989 * vlan processing is done, so that vlan/bridge or vlan/netgraph
992 if (((ifp
->if_flags
& (IFF_PROMISC
| IFF_PPROMISC
)) == IFF_PROMISC
) &&
993 !ETHER_IS_MULTICAST(eh
->ether_dhost
) &&
994 bcmp(eh
->ether_dhost
, IFP2AC(ifp
)->ac_enaddr
, ETHER_ADDR_LEN
)) {
995 if (ether_debug
& 1) {
996 kprintf("%02x:%02x:%02x:%02x:%02x:%02x "
997 "%02x:%02x:%02x:%02x:%02x:%02x "
998 "%04x vs %02x:%02x:%02x:%02x:%02x:%02x\n",
1012 ((u_char
*)IFP2AC(ifp
)->ac_enaddr
)[0],
1013 ((u_char
*)IFP2AC(ifp
)->ac_enaddr
)[1],
1014 ((u_char
*)IFP2AC(ifp
)->ac_enaddr
)[2],
1015 ((u_char
*)IFP2AC(ifp
)->ac_enaddr
)[3],
1016 ((u_char
*)IFP2AC(ifp
)->ac_enaddr
)[4],
1017 ((u_char
*)IFP2AC(ifp
)->ac_enaddr
)[5]
1020 if ((ether_debug
& 2) == 0)
1025 if ((IPFW_LOADED
|| IPFW3_LOADED
) && ether_ipfw
!= 0 && !discard
) {
1026 struct ether_header save_eh
= *eh
;
1028 /* XXX old crufty stuff, needs to be removed */
1029 m_adj(m
, sizeof(struct ether_header
));
1031 if (!ether_ipfw_chk(&m
, NULL
, &rule
, eh
)) {
1036 ether_restore_header(&m
, eh
, &save_eh
);
1039 eh
= mtod(m
, struct ether_header
*);
1042 ether_type
= ntohs(eh
->ether_type
);
1043 KKASSERT(ether_type
!= ETHERTYPE_VLAN
);
1045 /* Handle input from a lagg(4) port */
1046 if (ifp
->if_type
== IFT_IEEE8023ADLAG
) {
1047 KASSERT(lagg_input_p
!= NULL
,
1048 ("%s: if_lagg not loaded!", __func__
));
1049 (*lagg_input_p
)(ifp
, m
);
1053 if (m
->m_flags
& M_VLANTAG
) {
1054 void (*vlan_input_func
)(struct mbuf
*);
1056 vlan_input_func
= vlan_input_p
;
1057 /* Make sure 'vlan_input_func' is really used. */
1059 if (vlan_input_func
!= NULL
) {
1062 IFNET_STAT_INC(m
->m_pkthdr
.rcvif
, noproto
, 1);
1069 * If we have been asked to discard this packet
1070 * (e.g. not for us), drop it before entering
1079 * Clear protocol specific flags,
1080 * before entering the upper layer.
1082 m
->m_flags
&= ~M_ETHER_FLAGS
;
1084 /* Strip ethernet header. */
1085 m_adj(m
, sizeof(struct ether_header
));
1087 switch (ether_type
) {
1090 if ((m
->m_flags
& M_LENCHECKED
) == 0) {
1091 if (!ip_lengthcheck(&m
, 0))
1094 if (ipflow_fastforward(m
))
1100 if (ifp
->if_flags
& IFF_NOARP
) {
1101 /* Discard packet if ARP is disabled on interface */
1110 case ETHERTYPE_IPV6
:
1116 case ETHERTYPE_MPLS
:
1117 case ETHERTYPE_MPLS_MCAST
:
1118 /* Should have been set by ether_input(). */
1119 KKASSERT(m
->m_flags
& M_MPLSLABELED
);
1126 * The accurate msgport is not determined before
1127 * we reach here, so recharacterize packet.
1129 m
->m_flags
&= ~M_HASH
;
1130 if (ng_ether_input_orphan_p
!= NULL
) {
1132 * Put back the ethernet header so netgraph has a
1133 * consistent view of inbound packets.
1135 M_PREPEND(m
, ETHER_HDR_LEN
, M_NOWAIT
);
1138 * M_PREPEND frees the mbuf in case of failure.
1143 * Hold BGL and recheck ng_ether_input_orphan_p
1146 if (ng_ether_input_orphan_p
!= NULL
) {
1147 ng_ether_input_orphan_p(ifp
, m
);
1157 if (m
->m_flags
& M_HASH
) {
1158 if (&curthread
->td_msgport
==
1159 netisr_hashport(m
->m_pkthdr
.hash
)) {
1160 netisr_handle(isr
, m
);
1164 * XXX Something is wrong,
1165 * we probably should panic here!
1167 m
->m_flags
&= ~M_HASH
;
1168 atomic_add_long(ðer_input_wronghash
, 1);
1172 atomic_add_long(ðer_input_requeue
, 1);
1174 netisr_queue(isr
, m
);
1178 * First we perform any link layer operations, then continue to the
1179 * upper layers with ether_demux_oncpu().
1182 ether_input_oncpu(struct ifnet
*ifp
, struct mbuf
*m
)
1188 if ((ifp
->if_flags
& (IFF_UP
| IFF_MONITOR
)) != IFF_UP
) {
1190 * Receiving interface's flags are changed, when this
1191 * packet is waiting for processing; discard it.
1198 * Tap the packet off here for a bridge. bridge_input()
1199 * will return NULL if it has consumed the packet, otherwise
1200 * it gets processed as normal. Note that bridge_input()
1201 * will always return the original packet if we need to
1202 * process it locally.
1204 if (ifp
->if_bridge
) {
1205 KASSERT(bridge_input_p
!= NULL
,
1206 ("%s: if_bridge not loaded!", __func__
));
1208 if(m
->m_flags
& M_ETHER_BRIDGED
) {
1209 m
->m_flags
&= ~M_ETHER_BRIDGED
;
1211 m
= bridge_input_p(ifp
, m
);
1215 KASSERT(ifp
== m
->m_pkthdr
.rcvif
,
1216 ("bridge_input_p changed rcvif"));
1221 carp
= ifp
->if_carp
;
1223 m
= carp_input(carp
, m
);
1226 KASSERT(ifp
== m
->m_pkthdr
.rcvif
,
1227 ("carp_input changed rcvif"));
1231 /* Handle ng_ether(4) processing, if any */
1232 if (ng_ether_input_p
!= NULL
) {
1234 * Hold BGL and recheck ng_ether_input_p
1237 if (ng_ether_input_p
!= NULL
)
1238 ng_ether_input_p(ifp
, &m
);
1245 /* Continue with upper layer processing */
1246 ether_demux_oncpu(ifp
, m
);
1250 * Perform certain functions of ether_input():
1252 * - Update statistics
1253 * - Run bpf(4) tap if requested
1254 * Then pass the packet to ether_input_oncpu().
1256 * This function should be used by pseudo interface (e.g. vlan(4)),
1257 * when it tries to claim that the packet is received by it.
1263 ether_reinput_oncpu(struct ifnet
*ifp
, struct mbuf
*m
, int reinput_flags
)
1265 /* Discard packet if interface is not up */
1266 if (!(ifp
->if_flags
& IFF_UP
)) {
1272 * Change receiving interface. The bridge will often pass a flag to
1273 * ask that this not be done so ARPs get applied to the correct
1276 if ((reinput_flags
& REINPUT_KEEPRCVIF
) == 0 ||
1277 m
->m_pkthdr
.rcvif
== NULL
) {
1278 m
->m_pkthdr
.rcvif
= ifp
;
1281 /* Update statistics */
1282 IFNET_STAT_INC(ifp
, ipackets
, 1);
1283 IFNET_STAT_INC(ifp
, ibytes
, m
->m_pkthdr
.len
);
1284 if (m
->m_flags
& (M_MCAST
| M_BCAST
))
1285 IFNET_STAT_INC(ifp
, imcasts
, 1);
1287 if (reinput_flags
& REINPUT_RUNBPF
)
1290 ether_input_oncpu(ifp
, m
);
1293 static __inline boolean_t
1294 ether_vlancheck(struct mbuf
**m0
)
1296 struct mbuf
*m
= *m0
;
1297 struct ether_header
*eh
;
1298 uint16_t ether_type
;
1300 eh
= mtod(m
, struct ether_header
*);
1301 ether_type
= ntohs(eh
->ether_type
);
1303 if (ether_type
== ETHERTYPE_VLAN
&& (m
->m_flags
& M_VLANTAG
) == 0) {
1305 * Extract vlan tag if hardware does not do it for us
1307 vlan_ether_decap(&m
);
1311 eh
= mtod(m
, struct ether_header
*);
1312 ether_type
= ntohs(eh
->ether_type
);
1315 if (ether_type
== ETHERTYPE_VLAN
&& (m
->m_flags
& M_VLANTAG
)) {
1317 * To prevent possible dangerous recursion,
1318 * we don't do vlan-in-vlan
1320 IFNET_STAT_INC(m
->m_pkthdr
.rcvif
, noproto
, 1);
1323 KKASSERT(ether_type
!= ETHERTYPE_VLAN
);
1325 m
->m_flags
|= M_ETHER_VLANCHECKED
;
1336 ether_input_handler(netmsg_t nmsg
)
1338 struct netmsg_packet
*nmp
= &nmsg
->packet
; /* actual size */
1339 struct ether_header
*eh
;
1346 if ((m
->m_flags
& M_ETHER_VLANCHECKED
) == 0) {
1347 if (!ether_vlancheck(&m
)) {
1348 KKASSERT(m
== NULL
);
1352 if ((m
->m_flags
& (M_HASH
| M_CKHASH
)) == (M_HASH
| M_CKHASH
) ||
1353 __predict_false(ether_input_ckhash
)) {
1357 * Need to verify the hash supplied by the hardware
1358 * which could be wrong.
1360 m
->m_flags
&= ~(M_HASH
| M_CKHASH
);
1361 isr
= ether_characterize(&m
);
1364 KKASSERT(m
->m_flags
& M_HASH
);
1366 if (netisr_hashcpu(m
->m_pkthdr
.hash
) != mycpuid
) {
1368 * Wrong hardware supplied hash; redispatch
1370 ether_dispatch(isr
, m
, -1);
1371 if (__predict_false(ether_input_ckhash
))
1372 atomic_add_long(ðer_input_wronghwhash
, 1);
1376 ifp
= m
->m_pkthdr
.rcvif
;
1378 eh
= mtod(m
, struct ether_header
*);
1379 if (ETHER_IS_MULTICAST(eh
->ether_dhost
)) {
1380 if (bcmp(ifp
->if_broadcastaddr
, eh
->ether_dhost
,
1381 ifp
->if_addrlen
) == 0)
1382 m
->m_flags
|= M_BCAST
;
1384 m
->m_flags
|= M_MCAST
;
1385 IFNET_STAT_INC(ifp
, imcasts
, 1);
1388 ether_input_oncpu(ifp
, m
);
1392 * Send the packet to the target netisr msgport
1394 * At this point the packet must be characterized (M_HASH set),
1395 * so we know which netisr to send it to.
1398 ether_dispatch(int isr
, struct mbuf
*m
, int cpuid
)
1400 struct netmsg_packet
*pmsg
;
1403 KKASSERT(m
->m_flags
& M_HASH
);
1404 target_cpuid
= netisr_hashcpu(m
->m_pkthdr
.hash
);
1406 pmsg
= &m
->m_hdr
.mh_netmsg
;
1407 netmsg_init(&pmsg
->base
, NULL
, &netisr_apanic_rport
,
1408 0, ether_input_handler
);
1409 pmsg
->nm_packet
= m
;
1410 pmsg
->base
.lmsg
.u
.ms_result
= isr
;
1412 logether(disp_beg
, NULL
);
1413 if (target_cpuid
== cpuid
) {
1414 lwkt_sendmsg_oncpu(netisr_cpuport(target_cpuid
),
1417 lwkt_sendmsg(netisr_cpuport(target_cpuid
),
1420 logether(disp_end
, NULL
);
1424 * Process a received Ethernet packet.
1426 * The ethernet header is assumed to be in the mbuf so the caller
1427 * MUST MAKE SURE that there are at least sizeof(struct ether_header)
1428 * bytes in the first mbuf.
1430 * If the caller knows that the current thread is stick to the current
1431 * cpu, e.g. the interrupt thread or the netisr thread, the current cpuid
1432 * (mycpuid) should be passed through 'cpuid' argument. Else -1 should
1433 * be passed as 'cpuid' argument.
1436 ether_input(struct ifnet
*ifp
, struct mbuf
*m
, const struct pktinfo
*pi
,
1443 /* Discard packet if interface is not up */
1444 if (!(ifp
->if_flags
& IFF_UP
)) {
1449 if (m
->m_len
< sizeof(struct ether_header
)) {
1450 /* XXX error in the caller. */
1455 m
->m_pkthdr
.rcvif
= ifp
;
1457 logether(pkt_beg
, ifp
);
1459 ETHER_BPF_MTAP(ifp
, m
);
1461 IFNET_STAT_INC(ifp
, ibytes
, m
->m_pkthdr
.len
);
1463 if (ifp
->if_flags
& IFF_MONITOR
) {
1464 struct ether_header
*eh
;
1466 eh
= mtod(m
, struct ether_header
*);
1467 if (ETHER_IS_MULTICAST(eh
->ether_dhost
))
1468 IFNET_STAT_INC(ifp
, imcasts
, 1);
1471 * Interface marked for monitoring; discard packet.
1475 logether(pkt_end
, ifp
);
1480 * If the packet has been characterized (pi->pi_netisr / M_HASH)
1481 * we can dispatch it immediately with trivial checks.
1483 if (pi
!= NULL
&& (m
->m_flags
& M_HASH
)) {
1485 atomic_add_long(ðer_pktinfo_try
, 1);
1487 netisr_hashcheck(pi
->pi_netisr
, m
, pi
);
1488 if (m
->m_flags
& M_HASH
) {
1489 ether_dispatch(pi
->pi_netisr
, m
, cpuid
);
1491 atomic_add_long(ðer_pktinfo_hit
, 1);
1493 logether(pkt_end
, ifp
);
1498 else if (ifp
->if_capenable
& IFCAP_RSS
) {
1500 atomic_add_long(ðer_rss_nopi
, 1);
1502 atomic_add_long(ðer_rss_nohash
, 1);
1507 * Packet hash will be recalculated by software, so clear
1508 * the M_HASH and M_CKHASH flag set by the driver; the hash
1509 * value calculated by the hardware may not be exactly what
1512 m
->m_flags
&= ~(M_HASH
| M_CKHASH
);
1514 if (!ether_vlancheck(&m
)) {
1515 KKASSERT(m
== NULL
);
1516 logether(pkt_end
, ifp
);
1520 isr
= ether_characterize(&m
);
1522 logether(pkt_end
, ifp
);
1527 * Finally dispatch it
1529 ether_dispatch(isr
, m
, cpuid
);
1531 logether(pkt_end
, ifp
);
1535 ether_characterize(struct mbuf
**m0
)
1537 struct mbuf
*m
= *m0
;
1538 struct ether_header
*eh
;
1539 uint16_t ether_type
;
1542 eh
= mtod(m
, struct ether_header
*);
1543 ether_type
= ntohs(eh
->ether_type
);
1546 * Map ether type to netisr id.
1548 switch (ether_type
) {
1560 case ETHERTYPE_IPV6
:
1566 case ETHERTYPE_MPLS
:
1567 case ETHERTYPE_MPLS_MCAST
:
1568 m
->m_flags
|= M_MPLSLABELED
;
1575 * NETISR_MAX is an invalid value; it is chosen to let
1576 * netisr_characterize() know that we have no clear
1577 * idea where this packet should go.
1584 * Ask the isr to characterize the packet since we couldn't.
1585 * This is an attempt to optimally get us onto the correct protocol
1588 netisr_characterize(isr
, &m
, sizeof(struct ether_header
));
1595 ether_demux_handler(netmsg_t nmsg
)
1597 struct netmsg_packet
*nmp
= &nmsg
->packet
; /* actual size */
1603 ifp
= m
->m_pkthdr
.rcvif
;
1605 ether_demux_oncpu(ifp
, m
);
1609 ether_demux(struct mbuf
*m
)
1611 struct netmsg_packet
*pmsg
;
1614 isr
= ether_characterize(&m
);
1618 KKASSERT(m
->m_flags
& M_HASH
);
1619 pmsg
= &m
->m_hdr
.mh_netmsg
;
1620 netmsg_init(&pmsg
->base
, NULL
, &netisr_apanic_rport
,
1621 0, ether_demux_handler
);
1622 pmsg
->nm_packet
= m
;
1623 pmsg
->base
.lmsg
.u
.ms_result
= isr
;
1625 lwkt_sendmsg(netisr_hashport(m
->m_pkthdr
.hash
), &pmsg
->base
.lmsg
);
1629 kether_aton(const char *macstr
, u_char
*addr
)
1631 unsigned int o0
, o1
, o2
, o3
, o4
, o5
;
1634 if (macstr
== NULL
|| addr
== NULL
)
1637 n
= ksscanf(macstr
, "%x:%x:%x:%x:%x:%x", &o0
, &o1
, &o2
,
1653 kether_ntoa(const u_char
*addr
, char *buf
)
1655 int len
= ETHER_ADDRSTRLEN
+ 1;
1658 n
= ksnprintf(buf
, len
, "%02x:%02x:%02x:%02x:%02x:%02x", addr
[0],
1659 addr
[1], addr
[2], addr
[3], addr
[4], addr
[5]);
1667 MODULE_VERSION(ether
, 1);