2 * Copyright (c) 2003, 2004 Matthew Dillon. All rights reserved.
3 * Copyright (c) 2003, 2004 Jeffrey M. Hsu. All rights reserved.
4 * Copyright (c) 2003 Jonathan Lemon. All rights reserved.
5 * Copyright (c) 2003, 2004 The DragonFly Project. All rights reserved.
7 * This code is derived from software contributed to The DragonFly Project
8 * by Jonathan Lemon, Jeffrey M. Hsu, and Matthew Dillon.
10 * Jonathan Lemon gave Jeffrey Hsu permission to combine his copyright
11 * into this one around July 8 2004.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of The DragonFly Project nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific, prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
28 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
29 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
30 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
31 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
32 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
33 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
34 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
35 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
42 #include <sys/malloc.h>
43 #include <sys/msgport.h>
45 #include <sys/interrupt.h>
46 #include <sys/socket.h>
47 #include <sys/sysctl.h>
48 #include <sys/socketvar.h>
50 #include <net/if_var.h>
51 #include <net/netisr2.h>
52 #include <machine/cpufunc.h>
53 #include <machine/smp.h>
55 #include <sys/thread2.h>
56 #include <sys/msgport2.h>
57 #include <net/netmsg2.h>
59 #include <vm/vm_extern.h>
61 static void netmsg_service_port_init(lwkt_port_t
);
62 static void netmsg_service_loop(void *arg
);
63 static void netisr_hashfn0(struct mbuf
**mp
, int hoff
);
64 static void netisr_nohashck(struct mbuf
*, const struct pktinfo
*);
66 struct netmsg_port_registration
{
67 TAILQ_ENTRY(netmsg_port_registration
) npr_entry
;
71 struct netisr_rollup
{
72 TAILQ_ENTRY(netisr_rollup
) ru_entry
;
78 struct netmsg_rollup
{
79 struct netmsg_base base
;
85 struct netmsg_barrier
{
86 struct netmsg_base base
;
87 volatile cpumask_t
*br_cpumask
;
88 volatile uint32_t br_done
;
91 #define NETISR_BR_NOTDONE 0x1
92 #define NETISR_BR_WAITDONE 0x80000000
94 struct netisr_barrier
{
95 struct netmsg_barrier
*br_msgs
[MAXCPU
];
100 struct thread thread
;
104 TAILQ_HEAD(, netisr_rollup
) netrulist
;
107 static struct netisr_data
*netisr_data
[MAXCPU
];
109 static struct netisr netisrs
[NETISR_MAX
];
110 static TAILQ_HEAD(,netmsg_port_registration
) netreglist
;
112 /* Per-CPU thread to handle any protocol. */
113 struct thread
*netisr_threads
[MAXCPU
];
115 lwkt_port netisr_afree_rport
;
116 lwkt_port netisr_afree_free_so_rport
;
117 lwkt_port netisr_adone_rport
;
118 lwkt_port netisr_apanic_rport
;
119 lwkt_port netisr_sync_port
;
121 static int (*netmsg_fwd_port_fn
)(lwkt_port_t
, lwkt_msg_t
);
123 SYSCTL_NODE(_net
, OID_AUTO
, netisr
, CTLFLAG_RW
, 0, "netisr");
125 __read_frequently
static int netisr_rollup_limit
= 32;
126 SYSCTL_INT(_net_netisr
, OID_AUTO
, rollup_limit
, CTLFLAG_RW
,
127 &netisr_rollup_limit
, 0, "Message to process before rollup");
129 __read_frequently
int netisr_ncpus
;
130 TUNABLE_INT("net.netisr.ncpus", &netisr_ncpus
);
131 SYSCTL_INT(_net_netisr
, OID_AUTO
, ncpus
, CTLFLAG_RD
,
132 &netisr_ncpus
, 0, "# of CPUs to handle network messages");
135 * netisr_afree_rport replymsg function, only used to handle async
136 * messages which the sender has abandoned to their fate.
139 netisr_autofree_reply(lwkt_port_t port
, lwkt_msg_t msg
)
141 kfree(msg
, M_LWKTMSG
);
145 netisr_autofree_free_so_reply(lwkt_port_t port
, lwkt_msg_t msg
)
147 sofree(((netmsg_t
)msg
)->base
.nm_so
);
148 kfree(msg
, M_LWKTMSG
);
152 * We need a custom putport function to handle the case where the
153 * message target is the current thread's message port. This case
154 * can occur when the TCP or UDP stack does a direct callback to NFS and NFS
155 * then turns around and executes a network operation synchronously.
157 * To prevent deadlocking, we must execute these self-referential messages
158 * synchronously, effectively turning the message into a glorified direct
159 * procedure call back into the protocol stack. The operation must be
160 * complete on return or we will deadlock, so panic if it isn't.
162 * However, the target function is under no obligation to immediately
163 * reply the message. It may forward it elsewhere.
166 netmsg_put_port(lwkt_port_t port
, lwkt_msg_t lmsg
)
168 netmsg_base_t nmsg
= (void *)lmsg
;
170 if ((lmsg
->ms_flags
& MSGF_SYNC
) && port
== &curthread
->td_msgport
) {
171 nmsg
->nm_dispatch((netmsg_t
)nmsg
);
174 return(netmsg_fwd_port_fn(port
, lmsg
));
179 * UNIX DOMAIN sockets still have to run their uipc functions synchronously,
180 * because they depend on the user proc context for a number of things
181 * (like creds) which we have not yet incorporated into the message structure.
183 * However, we maintain or message/port abstraction. Having a special
184 * synchronous port which runs the commands synchronously gives us the
185 * ability to serialize operations in one place later on when we start
189 netmsg_sync_putport(lwkt_port_t port
, lwkt_msg_t lmsg
)
191 netmsg_base_t nmsg
= (void *)lmsg
;
193 KKASSERT((lmsg
->ms_flags
& MSGF_DONE
) == 0);
195 lmsg
->ms_target_port
= port
; /* required for abort */
196 nmsg
->nm_dispatch((netmsg_t
)nmsg
);
205 if (netisr_ncpus
<= 0 || netisr_ncpus
> ncpus
) {
207 netisr_ncpus
= ncpus
;
209 if (netisr_ncpus
> NETISR_CPUMAX
)
210 netisr_ncpus
= NETISR_CPUMAX
;
212 TAILQ_INIT(&netreglist
);
215 * Create default per-cpu threads for generic protocol handling.
217 for (i
= 0; i
< ncpus
; ++i
) {
218 struct netisr_data
*nd
;
220 nd
= (void *)kmem_alloc3(kernel_map
, sizeof(*nd
),
221 VM_SUBSYS_GD
, KM_CPU(i
));
222 memset(nd
, 0, sizeof(*nd
));
223 TAILQ_INIT(&nd
->netrulist
);
226 lwkt_create(netmsg_service_loop
, NULL
, &netisr_threads
[i
],
227 &nd
->thread
, TDF_NOSTART
|TDF_FORCE_SPINPORT
|TDF_FIXEDCPU
,
229 netmsg_service_port_init(&netisr_threads
[i
]->td_msgport
);
230 lwkt_schedule(netisr_threads
[i
]);
234 * The netisr_afree_rport is a special reply port which automatically
235 * frees the replied message. The netisr_adone_rport simply marks
236 * the message as being done. The netisr_apanic_rport panics if
237 * the message is replied to.
239 lwkt_initport_replyonly(&netisr_afree_rport
, netisr_autofree_reply
);
240 lwkt_initport_replyonly(&netisr_afree_free_so_rport
,
241 netisr_autofree_free_so_reply
);
242 lwkt_initport_replyonly_null(&netisr_adone_rport
);
243 lwkt_initport_panic(&netisr_apanic_rport
);
246 * The netisr_syncport is a special port which executes the message
247 * synchronously and waits for it if EASYNC is returned.
249 lwkt_initport_putonly(&netisr_sync_port
, netmsg_sync_putport
);
251 SYSINIT(netisr
, SI_SUB_PRE_DRIVERS
, SI_ORDER_FIRST
, netisr_init
, NULL
);
254 * Finish initializing the message port for a netmsg service. This also
255 * registers the port for synchronous cleanup operations such as when an
256 * ifnet is being destroyed. There is no deregistration API yet.
259 netmsg_service_port_init(lwkt_port_t port
)
261 struct netmsg_port_registration
*reg
;
264 * Override the putport function. Our custom function checks for
265 * self-references and executes such commands synchronously.
267 if (netmsg_fwd_port_fn
== NULL
)
268 netmsg_fwd_port_fn
= port
->mp_putport
;
269 KKASSERT(netmsg_fwd_port_fn
== port
->mp_putport
);
270 port
->mp_putport
= netmsg_put_port
;
273 * Keep track of ports using the netmsg API so we can synchronize
274 * certain operations (such as freeing an ifnet structure) across all
277 reg
= kmalloc(sizeof(*reg
), M_TEMP
, M_WAITOK
|M_ZERO
);
278 reg
->npr_port
= port
;
279 TAILQ_INSERT_TAIL(&netreglist
, reg
, npr_entry
);
283 * This function synchronizes the caller with all netmsg services. For
284 * example, if an interface is being removed we must make sure that all
285 * packets related to that interface complete processing before the structure
286 * can actually be freed. This sort of synchronization is an alternative to
287 * ref-counting the netif, removing the ref counting overhead in favor of
288 * placing additional overhead in the netif freeing sequence (where it is
292 netmsg_service_sync(void)
294 struct netmsg_port_registration
*reg
;
295 struct netmsg_base smsg
;
297 netmsg_init(&smsg
, NULL
, &curthread
->td_msgport
, 0, netmsg_sync_handler
);
299 TAILQ_FOREACH(reg
, &netreglist
, npr_entry
) {
300 lwkt_domsg(reg
->npr_port
, &smsg
.lmsg
, 0);
305 * The netmsg function simply replies the message. API semantics require
306 * EASYNC to be returned if the netmsg function disposes of the message.
309 netmsg_sync_handler(netmsg_t msg
)
311 lwkt_replymsg(&msg
->lmsg
, 0);
315 * Generic netmsg service loop. Some protocols may roll their own but all
316 * must do the basic command dispatch function call done here.
319 netmsg_service_loop(void *arg
)
322 thread_t td
= curthread
;
324 struct netisr_data
*nd
= netisr_data
[mycpuid
];
326 td
->td_type
= TD_TYPE_NETISR
;
328 while ((msg
= lwkt_waitport(&td
->td_msgport
, 0))) {
329 struct netisr_rollup
*ru
;
332 * Run up to 512 pending netmsgs.
334 limit
= netisr_rollup_limit
;
336 KASSERT(msg
->nm_dispatch
!= NULL
,
337 ("netmsg_service isr %d badmsg",
338 msg
->lmsg
.u
.ms_result
));
340 * Don't match so_port, if the msg explicitly
341 * asks us to ignore its so_port.
343 if ((msg
->lmsg
.ms_flags
& MSGF_IGNSOPORT
) == 0 &&
345 msg
->nm_so
->so_port
!= &td
->td_msgport
) {
347 * Sockets undergoing connect or disconnect
348 * ops can change ports on us. Chase the
353 * This could be quite common for protocols
354 * which support asynchronous pru_connect,
355 * e.g. TCP, so kprintf socket port chasing
356 * could be too verbose for the console.
358 kprintf("%s: Warning, port changed so=%p\n",
359 __func__
, msg
->nm_so
);
361 lwkt_forwardmsg(msg
->nm_so
->so_port
,
365 * We are on the correct port, dispatch it.
368 nd
->netlastfunc
= msg
->nm_dispatch
;
370 msg
->nm_dispatch((netmsg_t
)msg
);
374 } while ((msg
= lwkt_getport(&td
->td_msgport
)) != NULL
);
377 * Run all registered rollup functions for this cpu
378 * (e.g. tcp_willblock()).
380 TAILQ_FOREACH(ru
, &nd
->netrulist
, ru_entry
)
386 * Forward a packet to a netisr service function.
388 * If the packet has not been assigned to a protocol thread we call
389 * the port characterization function to assign it. The caller must
390 * clear M_HASH (or not have set it in the first place) if the caller
391 * wishes the packet to be recharacterized.
394 netisr_queue(int num
, struct mbuf
*m
)
397 struct netmsg_packet
*pmsg
;
400 KASSERT((num
> 0 && num
<= NELEM(netisrs
)),
401 ("Bad isr %d", num
));
404 if (ni
->ni_handler
== NULL
) {
405 kprintf("%s: Unregistered isr %d\n", __func__
, num
);
411 * Figure out which protocol thread to send to. This does not
412 * have to be perfect but performance will be really good if it
413 * is correct. Major protocol inputs such as ip_input() will
414 * re-characterize the packet as necessary.
416 if ((m
->m_flags
& M_HASH
) == 0) {
417 ni
->ni_hashfn(&m
, 0);
420 if ((m
->m_flags
& M_HASH
) == 0) {
421 kprintf("%s(%d): packet hash failed\n",
429 * Get the protocol port based on the packet hash, initialize
430 * the netmsg, and send it off.
432 port
= netisr_hashport(m
->m_pkthdr
.hash
);
433 pmsg
= &m
->m_hdr
.mh_netmsg
;
434 netmsg_init(&pmsg
->base
, NULL
, &netisr_apanic_rport
,
437 pmsg
->base
.lmsg
.u
.ms_result
= num
;
438 lwkt_sendmsg(port
, &pmsg
->base
.lmsg
);
444 * Run a netisr service function on the packet.
446 * The packet must have been correctly characterized!
449 netisr_handle(int num
, struct mbuf
*m
)
452 struct netmsg_packet
*pmsg
;
456 * Get the protocol port based on the packet hash
458 KASSERT((m
->m_flags
& M_HASH
), ("packet not characterized"));
459 port
= netisr_hashport(m
->m_pkthdr
.hash
);
460 KASSERT(&curthread
->td_msgport
== port
, ("wrong msgport"));
462 KASSERT((num
> 0 && num
<= NELEM(netisrs
)), ("bad isr %d", num
));
464 if (ni
->ni_handler
== NULL
) {
465 kprintf("%s: unregistered isr %d\n", __func__
, num
);
471 * Initialize the netmsg, and run the handler directly.
473 pmsg
= &m
->m_hdr
.mh_netmsg
;
474 netmsg_init(&pmsg
->base
, NULL
, &netisr_apanic_rport
,
477 pmsg
->base
.lmsg
.u
.ms_result
= num
;
478 ni
->ni_handler((netmsg_t
)&pmsg
->base
);
484 * Pre-characterization of a deeper portion of the packet for the
487 * The base of the ISR type (e.g. IP) that we want to characterize is
488 * at (hoff) relative to the beginning of the mbuf. This allows
489 * e.g. ether_characterize() to not have to adjust the m_data/m_len.
492 netisr_characterize(int num
, struct mbuf
**mp
, int hoff
)
503 if (num
< 0 || num
>= NETISR_MAX
) {
504 if (num
== NETISR_MAX
) {
508 panic("Bad isr %d", num
);
515 if (ni
->ni_handler
== NULL
) {
516 kprintf("%s: Unregistered isr %d\n", __func__
, num
);
522 * Characterize the packet
524 if ((m
->m_flags
& M_HASH
) == 0) {
525 ni
->ni_hashfn(mp
, hoff
);
527 if (m
&& (m
->m_flags
& M_HASH
) == 0) {
528 kprintf("%s(%d): packet hash failed\n",
535 netisr_register(int num
, netisr_fn_t handler
, netisr_hashfn_t hashfn
)
539 KASSERT((num
> 0 && num
<= NELEM(netisrs
)),
540 ("netisr_register: bad isr %d", num
));
541 KKASSERT(handler
!= NULL
);
544 hashfn
= netisr_hashfn0
;
548 ni
->ni_handler
= handler
;
549 ni
->ni_hashck
= netisr_nohashck
;
550 ni
->ni_hashfn
= hashfn
;
551 netmsg_init(&ni
->ni_netmsg
, NULL
, &netisr_adone_rport
, 0, NULL
);
555 netisr_register_hashcheck(int num
, netisr_hashck_t hashck
)
559 KASSERT((num
> 0 && num
<= NELEM(netisrs
)),
560 ("netisr_register: bad isr %d", num
));
563 ni
->ni_hashck
= hashck
;
567 netisr_register_rollup_dispatch(netmsg_t nmsg
)
569 struct netmsg_rollup
*nm
= (struct netmsg_rollup
*)nmsg
;
571 struct netisr_data
*nd
= netisr_data
[cpuid
];
572 struct netisr_rollup
*new_ru
, *ru
;
574 new_ru
= kmalloc(sizeof(*new_ru
), M_TEMP
, M_WAITOK
|M_ZERO
);
575 new_ru
->ru_func
= nm
->func
;
576 new_ru
->ru_prio
= nm
->prio
;
579 * Higher priority "rollup" appears first
581 TAILQ_FOREACH(ru
, &nd
->netrulist
, ru_entry
) {
582 if (ru
->ru_prio
< new_ru
->ru_prio
) {
583 TAILQ_INSERT_BEFORE(ru
, new_ru
, ru_entry
);
587 TAILQ_INSERT_TAIL(&nd
->netrulist
, new_ru
, ru_entry
);
591 KKASSERT(nm
->key
!= NULL
);
592 new_ru
->ru_key
= nm
->key
;
594 netisr_forwardmsg_all(&nm
->base
, cpuid
+ 1);
597 struct netisr_rollup
*
598 netisr_register_rollup(netisr_ru_t func
, int prio
)
600 struct netmsg_rollup nm
;
602 netmsg_init(&nm
.base
, NULL
, &curthread
->td_msgport
, MSGF_PRIORITY
,
603 netisr_register_rollup_dispatch
);
607 netisr_domsg_global(&nm
.base
);
609 KKASSERT(nm
.key
!= NULL
);
614 netisr_unregister_rollup_dispatch(netmsg_t nmsg
)
616 struct netmsg_rollup
*nm
= (struct netmsg_rollup
*)nmsg
;
618 struct netisr_data
*nd
= netisr_data
[cpuid
];
619 struct netisr_rollup
*ru
;
621 TAILQ_FOREACH(ru
, &nd
->netrulist
, ru_entry
) {
622 if (ru
->ru_key
== nm
->key
)
626 panic("netisr: no rullup for %p", nm
->key
);
628 TAILQ_REMOVE(&nd
->netrulist
, ru
, ru_entry
);
631 netisr_forwardmsg_all(&nm
->base
, cpuid
+ 1);
635 netisr_unregister_rollup(struct netisr_rollup
*key
)
637 struct netmsg_rollup nm
;
639 netmsg_init(&nm
.base
, NULL
, &curthread
->td_msgport
, MSGF_PRIORITY
,
640 netisr_unregister_rollup_dispatch
);
642 netisr_domsg_global(&nm
.base
);
646 * Return a default protocol control message processing thread port
649 cpu0_ctlport(int cmd __unused
, struct sockaddr
*sa __unused
,
650 void *extra __unused
, int *cpuid
)
653 return netisr_cpuport(*cpuid
);
657 * This is a default netisr packet characterization function which
658 * sets M_HASH. If a netisr is registered with a NULL hashfn function
659 * this one is assigned.
661 * This function makes no attempt to validate the packet.
664 netisr_hashfn0(struct mbuf
**mp
, int hoff __unused
)
671 * schednetisr() is used to call the netisr handler from the appropriate
672 * netisr thread for polling and other purposes.
674 * This function may be called from a hard interrupt or IPI and must be
675 * MP SAFE and non-blocking. We use a fixed per-cpu message instead of
676 * trying to allocate one. We must get ourselves onto the target cpu
677 * to safely check the MSGF_DONE bit on the message but since the message
678 * will be sent to that cpu anyway this does not add any extra work beyond
679 * what lwkt_sendmsg() would have already had to do to schedule the target
683 schednetisr_remote(void *data
)
685 int num
= (int)(intptr_t)data
;
686 struct netisr
*ni
= &netisrs
[num
];
687 lwkt_port_t port
= &netisr_threads
[0]->td_msgport
;
690 pmsg
= &netisrs
[num
].ni_netmsg
;
691 if (pmsg
->lmsg
.ms_flags
& MSGF_DONE
) {
692 netmsg_init(pmsg
, NULL
, &netisr_adone_rport
, 0, ni
->ni_handler
);
693 pmsg
->lmsg
.u
.ms_result
= num
;
694 lwkt_sendmsg(port
, &pmsg
->lmsg
);
701 KASSERT((num
> 0 && num
<= NELEM(netisrs
)),
702 ("schednetisr: bad isr %d", num
));
703 KKASSERT(netisrs
[num
].ni_handler
!= NULL
);
704 if (mycpu
->gd_cpuid
!= 0) {
705 lwkt_send_ipiq(globaldata_find(0),
706 schednetisr_remote
, (void *)(intptr_t)num
);
709 schednetisr_remote((void *)(intptr_t)num
);
715 netisr_barrier_dispatch(netmsg_t nmsg
)
717 struct netmsg_barrier
*msg
= (struct netmsg_barrier
*)nmsg
;
719 ATOMIC_CPUMASK_NANDBIT(*msg
->br_cpumask
, mycpu
->gd_cpuid
);
720 if (CPUMASK_TESTZERO(*msg
->br_cpumask
))
721 wakeup(msg
->br_cpumask
);
724 uint32_t done
= msg
->br_done
;
727 if ((done
& NETISR_BR_NOTDONE
) == 0)
730 tsleep_interlock(&msg
->br_done
, 0);
731 if (atomic_cmpset_int(&msg
->br_done
,
732 done
, done
| NETISR_BR_WAITDONE
))
733 tsleep(&msg
->br_done
, PINTERLOCKED
, "nbrdsp", 0);
736 lwkt_replymsg(&nmsg
->lmsg
, 0);
739 struct netisr_barrier
*
740 netisr_barrier_create(void)
742 struct netisr_barrier
*br
;
744 br
= kmalloc(sizeof(*br
), M_LWKTMSG
, M_WAITOK
| M_ZERO
);
749 netisr_barrier_set(struct netisr_barrier
*br
)
751 volatile cpumask_t other_cpumask
;
755 KKASSERT(!br
->br_isset
);
757 other_cpumask
= mycpu
->gd_other_cpus
;
758 CPUMASK_ANDMASK(other_cpumask
, smp_active_mask
);
761 for (i
= 0; i
< ncpus
; ++i
) {
762 struct netmsg_barrier
*msg
;
767 msg
= kmalloc(sizeof(struct netmsg_barrier
),
768 M_LWKTMSG
, M_WAITOK
);
771 * Don't use priority message here; mainly to keep
772 * it ordered w/ the previous data packets sent by
775 netmsg_init(&msg
->base
, NULL
, &netisr_afree_rport
, 0,
776 netisr_barrier_dispatch
);
777 msg
->br_cpumask
= &other_cpumask
;
778 msg
->br_done
= NETISR_BR_NOTDONE
;
780 KKASSERT(br
->br_msgs
[i
] == NULL
);
781 br
->br_msgs
[i
] = msg
;
784 for (i
= 0; i
< ncpus
; ++i
) {
787 lwkt_sendmsg(netisr_cpuport(i
), &br
->br_msgs
[i
]->base
.lmsg
);
790 while (CPUMASK_TESTNZERO(other_cpumask
)) {
791 tsleep_interlock(&other_cpumask
, 0);
792 if (CPUMASK_TESTNZERO(other_cpumask
))
793 tsleep(&other_cpumask
, PINTERLOCKED
, "nbrset", 0);
799 netisr_barrier_rem(struct netisr_barrier
*br
)
804 KKASSERT(br
->br_isset
);
807 for (i
= 0; i
< ncpus
; ++i
) {
808 struct netmsg_barrier
*msg
= br
->br_msgs
[i
];
811 msg
= br
->br_msgs
[i
];
812 br
->br_msgs
[i
] = NULL
;
817 done
= atomic_swap_int(&msg
->br_done
, 0);
818 if (done
& NETISR_BR_WAITDONE
)
819 wakeup(&msg
->br_done
);
825 netisr_nohashck(struct mbuf
*m
, const struct pktinfo
*pi __unused
)
827 m
->m_flags
&= ~M_HASH
;
831 netisr_hashcheck(int num
, struct mbuf
*m
, const struct pktinfo
*pi
)
835 if (num
< 0 || num
>= NETISR_MAX
)
836 panic("Bad isr %d", num
);
842 if (ni
->ni_handler
== NULL
)
843 panic("Unregistered isr %d", num
);
845 ni
->ni_hashck(m
, pi
);