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>
58 #include <sys/mplock2.h>
60 #include <vm/vm_extern.h>
62 static void netmsg_service_port_init(lwkt_port_t
);
63 static void netmsg_service_loop(void *arg
);
64 static void netisr_hashfn0(struct mbuf
**mp
, int hoff
);
65 static void netisr_nohashck(struct mbuf
*, const struct pktinfo
*);
67 struct netmsg_port_registration
{
68 TAILQ_ENTRY(netmsg_port_registration
) npr_entry
;
72 struct netisr_rollup
{
73 TAILQ_ENTRY(netisr_rollup
) ru_entry
;
79 struct netmsg_rollup
{
80 struct netmsg_base base
;
86 struct netmsg_barrier
{
87 struct netmsg_base base
;
88 volatile cpumask_t
*br_cpumask
;
89 volatile uint32_t br_done
;
92 #define NETISR_BR_NOTDONE 0x1
93 #define NETISR_BR_WAITDONE 0x80000000
95 struct netisr_barrier
{
96 struct netmsg_barrier
*br_msgs
[MAXCPU
];
101 struct thread thread
;
105 TAILQ_HEAD(, netisr_rollup
) netrulist
;
108 static struct netisr_data
*netisr_data
[MAXCPU
];
110 static struct netisr netisrs
[NETISR_MAX
];
111 static TAILQ_HEAD(,netmsg_port_registration
) netreglist
;
113 /* Per-CPU thread to handle any protocol. */
114 struct thread
*netisr_threads
[MAXCPU
];
116 lwkt_port netisr_afree_rport
;
117 lwkt_port netisr_afree_free_so_rport
;
118 lwkt_port netisr_adone_rport
;
119 lwkt_port netisr_apanic_rport
;
120 lwkt_port netisr_sync_port
;
122 static int (*netmsg_fwd_port_fn
)(lwkt_port_t
, lwkt_msg_t
);
124 SYSCTL_NODE(_net
, OID_AUTO
, netisr
, CTLFLAG_RW
, 0, "netisr");
126 static int netisr_rollup_limit
= 32;
127 SYSCTL_INT(_net_netisr
, OID_AUTO
, rollup_limit
, CTLFLAG_RW
,
128 &netisr_rollup_limit
, 0, "Message to process before rollup");
131 TUNABLE_INT("net.netisr.ncpus", &netisr_ncpus
);
132 SYSCTL_INT(_net_netisr
, OID_AUTO
, ncpus
, CTLFLAG_RD
,
133 &netisr_ncpus
, 0, "# of CPUs to handle network messages");
136 * netisr_afree_rport replymsg function, only used to handle async
137 * messages which the sender has abandoned to their fate.
140 netisr_autofree_reply(lwkt_port_t port
, lwkt_msg_t msg
)
142 kfree(msg
, M_LWKTMSG
);
146 netisr_autofree_free_so_reply(lwkt_port_t port
, lwkt_msg_t msg
)
148 sofree(((netmsg_t
)msg
)->base
.nm_so
);
149 kfree(msg
, M_LWKTMSG
);
153 * We need a custom putport function to handle the case where the
154 * message target is the current thread's message port. This case
155 * can occur when the TCP or UDP stack does a direct callback to NFS and NFS
156 * then turns around and executes a network operation synchronously.
158 * To prevent deadlocking, we must execute these self-referential messages
159 * synchronously, effectively turning the message into a glorified direct
160 * procedure call back into the protocol stack. The operation must be
161 * complete on return or we will deadlock, so panic if it isn't.
163 * However, the target function is under no obligation to immediately
164 * reply the message. It may forward it elsewhere.
167 netmsg_put_port(lwkt_port_t port
, lwkt_msg_t lmsg
)
169 netmsg_base_t nmsg
= (void *)lmsg
;
171 if ((lmsg
->ms_flags
& MSGF_SYNC
) && port
== &curthread
->td_msgport
) {
172 nmsg
->nm_dispatch((netmsg_t
)nmsg
);
175 return(netmsg_fwd_port_fn(port
, lmsg
));
180 * UNIX DOMAIN sockets still have to run their uipc functions synchronously,
181 * because they depend on the user proc context for a number of things
182 * (like creds) which we have not yet incorporated into the message structure.
184 * However, we maintain or message/port abstraction. Having a special
185 * synchronous port which runs the commands synchronously gives us the
186 * ability to serialize operations in one place later on when we start
190 netmsg_sync_putport(lwkt_port_t port
, lwkt_msg_t lmsg
)
192 netmsg_base_t nmsg
= (void *)lmsg
;
194 KKASSERT((lmsg
->ms_flags
& MSGF_DONE
) == 0);
196 lmsg
->ms_target_port
= port
; /* required for abort */
197 nmsg
->nm_dispatch((netmsg_t
)nmsg
);
206 if (netisr_ncpus
<= 0) {
208 netisr_ncpus
= ncpus2
;
209 } else if (netisr_ncpus
> ncpus
) {
210 netisr_ncpus
= ncpus
;
212 if (netisr_ncpus
> NETISR_CPUMAX
)
213 netisr_ncpus
= NETISR_CPUMAX
;
215 TAILQ_INIT(&netreglist
);
218 * Create default per-cpu threads for generic protocol handling.
220 for (i
= 0; i
< ncpus
; ++i
) {
221 struct netisr_data
*nd
;
223 nd
= (void *)kmem_alloc3(&kernel_map
, sizeof(*nd
),
224 VM_SUBSYS_GD
, KM_CPU(i
));
225 memset(nd
, 0, sizeof(*nd
));
226 TAILQ_INIT(&nd
->netrulist
);
229 lwkt_create(netmsg_service_loop
, NULL
, &netisr_threads
[i
],
230 &nd
->thread
, TDF_NOSTART
|TDF_FORCE_SPINPORT
|TDF_FIXEDCPU
,
232 netmsg_service_port_init(&netisr_threads
[i
]->td_msgport
);
233 lwkt_schedule(netisr_threads
[i
]);
237 * The netisr_afree_rport is a special reply port which automatically
238 * frees the replied message. The netisr_adone_rport simply marks
239 * the message as being done. The netisr_apanic_rport panics if
240 * the message is replied to.
242 lwkt_initport_replyonly(&netisr_afree_rport
, netisr_autofree_reply
);
243 lwkt_initport_replyonly(&netisr_afree_free_so_rport
,
244 netisr_autofree_free_so_reply
);
245 lwkt_initport_replyonly_null(&netisr_adone_rport
);
246 lwkt_initport_panic(&netisr_apanic_rport
);
249 * The netisr_syncport is a special port which executes the message
250 * synchronously and waits for it if EASYNC is returned.
252 lwkt_initport_putonly(&netisr_sync_port
, netmsg_sync_putport
);
254 SYSINIT(netisr
, SI_SUB_PRE_DRIVERS
, SI_ORDER_FIRST
, netisr_init
, NULL
);
257 * Finish initializing the message port for a netmsg service. This also
258 * registers the port for synchronous cleanup operations such as when an
259 * ifnet is being destroyed. There is no deregistration API yet.
262 netmsg_service_port_init(lwkt_port_t port
)
264 struct netmsg_port_registration
*reg
;
267 * Override the putport function. Our custom function checks for
268 * self-references and executes such commands synchronously.
270 if (netmsg_fwd_port_fn
== NULL
)
271 netmsg_fwd_port_fn
= port
->mp_putport
;
272 KKASSERT(netmsg_fwd_port_fn
== port
->mp_putport
);
273 port
->mp_putport
= netmsg_put_port
;
276 * Keep track of ports using the netmsg API so we can synchronize
277 * certain operations (such as freeing an ifnet structure) across all
280 reg
= kmalloc(sizeof(*reg
), M_TEMP
, M_WAITOK
|M_ZERO
);
281 reg
->npr_port
= port
;
282 TAILQ_INSERT_TAIL(&netreglist
, reg
, npr_entry
);
286 * This function synchronizes the caller with all netmsg services. For
287 * example, if an interface is being removed we must make sure that all
288 * packets related to that interface complete processing before the structure
289 * can actually be freed. This sort of synchronization is an alternative to
290 * ref-counting the netif, removing the ref counting overhead in favor of
291 * placing additional overhead in the netif freeing sequence (where it is
295 netmsg_service_sync(void)
297 struct netmsg_port_registration
*reg
;
298 struct netmsg_base smsg
;
300 netmsg_init(&smsg
, NULL
, &curthread
->td_msgport
, 0, netmsg_sync_handler
);
302 TAILQ_FOREACH(reg
, &netreglist
, npr_entry
) {
303 lwkt_domsg(reg
->npr_port
, &smsg
.lmsg
, 0);
308 * The netmsg function simply replies the message. API semantics require
309 * EASYNC to be returned if the netmsg function disposes of the message.
312 netmsg_sync_handler(netmsg_t msg
)
314 lwkt_replymsg(&msg
->lmsg
, 0);
318 * Generic netmsg service loop. Some protocols may roll their own but all
319 * must do the basic command dispatch function call done here.
322 netmsg_service_loop(void *arg
)
325 thread_t td
= curthread
;
327 struct netisr_data
*nd
= netisr_data
[mycpuid
];
329 td
->td_type
= TD_TYPE_NETISR
;
331 while ((msg
= lwkt_waitport(&td
->td_msgport
, 0))) {
332 struct netisr_rollup
*ru
;
335 * Run up to 512 pending netmsgs.
337 limit
= netisr_rollup_limit
;
339 KASSERT(msg
->nm_dispatch
!= NULL
,
340 ("netmsg_service isr %d badmsg",
341 msg
->lmsg
.u
.ms_result
));
343 * Don't match so_port, if the msg explicitly
344 * asks us to ignore its so_port.
346 if ((msg
->lmsg
.ms_flags
& MSGF_IGNSOPORT
) == 0 &&
348 msg
->nm_so
->so_port
!= &td
->td_msgport
) {
350 * Sockets undergoing connect or disconnect
351 * ops can change ports on us. Chase the
356 * This could be quite common for protocols
357 * which support asynchronous pru_connect,
358 * e.g. TCP, so kprintf socket port chasing
359 * could be too verbose for the console.
361 kprintf("%s: Warning, port changed so=%p\n",
362 __func__
, msg
->nm_so
);
364 lwkt_forwardmsg(msg
->nm_so
->so_port
,
368 * We are on the correct port, dispatch it.
371 nd
->netlastfunc
= msg
->nm_dispatch
;
373 msg
->nm_dispatch((netmsg_t
)msg
);
377 } while ((msg
= lwkt_getport(&td
->td_msgport
)) != NULL
);
380 * Run all registered rollup functions for this cpu
381 * (e.g. tcp_willblock()).
383 TAILQ_FOREACH(ru
, &nd
->netrulist
, ru_entry
)
389 * Forward a packet to a netisr service function.
391 * If the packet has not been assigned to a protocol thread we call
392 * the port characterization function to assign it. The caller must
393 * clear M_HASH (or not have set it in the first place) if the caller
394 * wishes the packet to be recharacterized.
397 netisr_queue(int num
, struct mbuf
*m
)
400 struct netmsg_packet
*pmsg
;
403 KASSERT((num
> 0 && num
<= NELEM(netisrs
)),
404 ("Bad isr %d", num
));
407 if (ni
->ni_handler
== NULL
) {
408 kprintf("%s: Unregistered isr %d\n", __func__
, num
);
414 * Figure out which protocol thread to send to. This does not
415 * have to be perfect but performance will be really good if it
416 * is correct. Major protocol inputs such as ip_input() will
417 * re-characterize the packet as necessary.
419 if ((m
->m_flags
& M_HASH
) == 0) {
420 ni
->ni_hashfn(&m
, 0);
423 if ((m
->m_flags
& M_HASH
) == 0) {
424 kprintf("%s(%d): packet hash failed\n",
432 * Get the protocol port based on the packet hash, initialize
433 * the netmsg, and send it off.
435 port
= netisr_hashport(m
->m_pkthdr
.hash
);
436 pmsg
= &m
->m_hdr
.mh_netmsg
;
437 netmsg_init(&pmsg
->base
, NULL
, &netisr_apanic_rport
,
440 pmsg
->base
.lmsg
.u
.ms_result
= num
;
441 lwkt_sendmsg(port
, &pmsg
->base
.lmsg
);
447 * Run a netisr service function on the packet.
449 * The packet must have been correctly characterized!
452 netisr_handle(int num
, struct mbuf
*m
)
455 struct netmsg_packet
*pmsg
;
459 * Get the protocol port based on the packet hash
461 KASSERT((m
->m_flags
& M_HASH
), ("packet not characterized"));
462 port
= netisr_hashport(m
->m_pkthdr
.hash
);
463 KASSERT(&curthread
->td_msgport
== port
, ("wrong msgport"));
465 KASSERT((num
> 0 && num
<= NELEM(netisrs
)), ("bad isr %d", num
));
467 if (ni
->ni_handler
== NULL
) {
468 kprintf("%s: unregistered isr %d\n", __func__
, num
);
474 * Initialize the netmsg, and run the handler directly.
476 pmsg
= &m
->m_hdr
.mh_netmsg
;
477 netmsg_init(&pmsg
->base
, NULL
, &netisr_apanic_rport
,
480 pmsg
->base
.lmsg
.u
.ms_result
= num
;
481 ni
->ni_handler((netmsg_t
)&pmsg
->base
);
487 * Pre-characterization of a deeper portion of the packet for the
490 * The base of the ISR type (e.g. IP) that we want to characterize is
491 * at (hoff) relative to the beginning of the mbuf. This allows
492 * e.g. ether_characterize() to not have to adjust the m_data/m_len.
495 netisr_characterize(int num
, struct mbuf
**mp
, int hoff
)
506 if (num
< 0 || num
>= NETISR_MAX
) {
507 if (num
== NETISR_MAX
) {
511 panic("Bad isr %d", num
);
518 if (ni
->ni_handler
== NULL
) {
519 kprintf("%s: Unregistered isr %d\n", __func__
, num
);
525 * Characterize the packet
527 if ((m
->m_flags
& M_HASH
) == 0) {
528 ni
->ni_hashfn(mp
, hoff
);
530 if (m
&& (m
->m_flags
& M_HASH
) == 0) {
531 kprintf("%s(%d): packet hash failed\n",
538 netisr_register(int num
, netisr_fn_t handler
, netisr_hashfn_t hashfn
)
542 KASSERT((num
> 0 && num
<= NELEM(netisrs
)),
543 ("netisr_register: bad isr %d", num
));
544 KKASSERT(handler
!= NULL
);
547 hashfn
= netisr_hashfn0
;
551 ni
->ni_handler
= handler
;
552 ni
->ni_hashck
= netisr_nohashck
;
553 ni
->ni_hashfn
= hashfn
;
554 netmsg_init(&ni
->ni_netmsg
, NULL
, &netisr_adone_rport
, 0, NULL
);
558 netisr_register_hashcheck(int num
, netisr_hashck_t hashck
)
562 KASSERT((num
> 0 && num
<= NELEM(netisrs
)),
563 ("netisr_register: bad isr %d", num
));
566 ni
->ni_hashck
= hashck
;
570 netisr_register_rollup_dispatch(netmsg_t nmsg
)
572 struct netmsg_rollup
*nm
= (struct netmsg_rollup
*)nmsg
;
574 struct netisr_data
*nd
= netisr_data
[cpuid
];
575 struct netisr_rollup
*new_ru
, *ru
;
577 new_ru
= kmalloc(sizeof(*new_ru
), M_TEMP
, M_WAITOK
|M_ZERO
);
578 new_ru
->ru_func
= nm
->func
;
579 new_ru
->ru_prio
= nm
->prio
;
582 * Higher priority "rollup" appears first
584 TAILQ_FOREACH(ru
, &nd
->netrulist
, ru_entry
) {
585 if (ru
->ru_prio
< new_ru
->ru_prio
) {
586 TAILQ_INSERT_BEFORE(ru
, new_ru
, ru_entry
);
590 TAILQ_INSERT_TAIL(&nd
->netrulist
, new_ru
, ru_entry
);
594 KKASSERT(nm
->key
!= NULL
);
595 new_ru
->ru_key
= nm
->key
;
597 netisr_forwardmsg_all(&nm
->base
, cpuid
+ 1);
600 struct netisr_rollup
*
601 netisr_register_rollup(netisr_ru_t func
, int prio
)
603 struct netmsg_rollup nm
;
605 netmsg_init(&nm
.base
, NULL
, &curthread
->td_msgport
, MSGF_PRIORITY
,
606 netisr_register_rollup_dispatch
);
610 netisr_domsg_global(&nm
.base
);
612 KKASSERT(nm
.key
!= NULL
);
617 netisr_unregister_rollup_dispatch(netmsg_t nmsg
)
619 struct netmsg_rollup
*nm
= (struct netmsg_rollup
*)nmsg
;
621 struct netisr_data
*nd
= netisr_data
[cpuid
];
622 struct netisr_rollup
*ru
;
624 TAILQ_FOREACH(ru
, &nd
->netrulist
, ru_entry
) {
625 if (ru
->ru_key
== nm
->key
)
629 panic("netisr: no rullup for %p", nm
->key
);
631 TAILQ_REMOVE(&nd
->netrulist
, ru
, ru_entry
);
634 netisr_forwardmsg_all(&nm
->base
, cpuid
+ 1);
638 netisr_unregister_rollup(struct netisr_rollup
*key
)
640 struct netmsg_rollup nm
;
642 netmsg_init(&nm
.base
, NULL
, &curthread
->td_msgport
, MSGF_PRIORITY
,
643 netisr_unregister_rollup_dispatch
);
645 netisr_domsg_global(&nm
.base
);
649 * Return a default protocol control message processing thread port
652 cpu0_ctlport(int cmd __unused
, struct sockaddr
*sa __unused
,
653 void *extra __unused
, int *cpuid
)
656 return netisr_cpuport(*cpuid
);
660 * This is a default netisr packet characterization function which
661 * sets M_HASH. If a netisr is registered with a NULL hashfn function
662 * this one is assigned.
664 * This function makes no attempt to validate the packet.
667 netisr_hashfn0(struct mbuf
**mp
, int hoff __unused
)
674 * schednetisr() is used to call the netisr handler from the appropriate
675 * netisr thread for polling and other purposes.
677 * This function may be called from a hard interrupt or IPI and must be
678 * MP SAFE and non-blocking. We use a fixed per-cpu message instead of
679 * trying to allocate one. We must get ourselves onto the target cpu
680 * to safely check the MSGF_DONE bit on the message but since the message
681 * will be sent to that cpu anyway this does not add any extra work beyond
682 * what lwkt_sendmsg() would have already had to do to schedule the target
686 schednetisr_remote(void *data
)
688 int num
= (int)(intptr_t)data
;
689 struct netisr
*ni
= &netisrs
[num
];
690 lwkt_port_t port
= &netisr_threads
[0]->td_msgport
;
693 pmsg
= &netisrs
[num
].ni_netmsg
;
694 if (pmsg
->lmsg
.ms_flags
& MSGF_DONE
) {
695 netmsg_init(pmsg
, NULL
, &netisr_adone_rport
, 0, ni
->ni_handler
);
696 pmsg
->lmsg
.u
.ms_result
= num
;
697 lwkt_sendmsg(port
, &pmsg
->lmsg
);
704 KASSERT((num
> 0 && num
<= NELEM(netisrs
)),
705 ("schednetisr: bad isr %d", num
));
706 KKASSERT(netisrs
[num
].ni_handler
!= NULL
);
707 if (mycpu
->gd_cpuid
!= 0) {
708 lwkt_send_ipiq(globaldata_find(0),
709 schednetisr_remote
, (void *)(intptr_t)num
);
712 schednetisr_remote((void *)(intptr_t)num
);
718 netisr_barrier_dispatch(netmsg_t nmsg
)
720 struct netmsg_barrier
*msg
= (struct netmsg_barrier
*)nmsg
;
722 ATOMIC_CPUMASK_NANDBIT(*msg
->br_cpumask
, mycpu
->gd_cpuid
);
723 if (CPUMASK_TESTZERO(*msg
->br_cpumask
))
724 wakeup(msg
->br_cpumask
);
727 uint32_t done
= msg
->br_done
;
730 if ((done
& NETISR_BR_NOTDONE
) == 0)
733 tsleep_interlock(&msg
->br_done
, 0);
734 if (atomic_cmpset_int(&msg
->br_done
,
735 done
, done
| NETISR_BR_WAITDONE
))
736 tsleep(&msg
->br_done
, PINTERLOCKED
, "nbrdsp", 0);
739 lwkt_replymsg(&nmsg
->lmsg
, 0);
742 struct netisr_barrier
*
743 netisr_barrier_create(void)
745 struct netisr_barrier
*br
;
747 br
= kmalloc(sizeof(*br
), M_LWKTMSG
, M_WAITOK
| M_ZERO
);
752 netisr_barrier_set(struct netisr_barrier
*br
)
754 volatile cpumask_t other_cpumask
;
758 KKASSERT(!br
->br_isset
);
760 other_cpumask
= mycpu
->gd_other_cpus
;
761 CPUMASK_ANDMASK(other_cpumask
, smp_active_mask
);
764 for (i
= 0; i
< ncpus
; ++i
) {
765 struct netmsg_barrier
*msg
;
770 msg
= kmalloc(sizeof(struct netmsg_barrier
),
771 M_LWKTMSG
, M_WAITOK
);
774 * Don't use priority message here; mainly to keep
775 * it ordered w/ the previous data packets sent by
778 netmsg_init(&msg
->base
, NULL
, &netisr_afree_rport
, 0,
779 netisr_barrier_dispatch
);
780 msg
->br_cpumask
= &other_cpumask
;
781 msg
->br_done
= NETISR_BR_NOTDONE
;
783 KKASSERT(br
->br_msgs
[i
] == NULL
);
784 br
->br_msgs
[i
] = msg
;
787 for (i
= 0; i
< ncpus
; ++i
) {
790 lwkt_sendmsg(netisr_cpuport(i
), &br
->br_msgs
[i
]->base
.lmsg
);
793 while (CPUMASK_TESTNZERO(other_cpumask
)) {
794 tsleep_interlock(&other_cpumask
, 0);
795 if (CPUMASK_TESTNZERO(other_cpumask
))
796 tsleep(&other_cpumask
, PINTERLOCKED
, "nbrset", 0);
802 netisr_barrier_rem(struct netisr_barrier
*br
)
807 KKASSERT(br
->br_isset
);
810 for (i
= 0; i
< ncpus
; ++i
) {
811 struct netmsg_barrier
*msg
= br
->br_msgs
[i
];
814 msg
= br
->br_msgs
[i
];
815 br
->br_msgs
[i
] = NULL
;
820 done
= atomic_swap_int(&msg
->br_done
, 0);
821 if (done
& NETISR_BR_WAITDONE
)
822 wakeup(&msg
->br_done
);
828 netisr_nohashck(struct mbuf
*m
, const struct pktinfo
*pi __unused
)
830 m
->m_flags
&= ~M_HASH
;
834 netisr_hashcheck(int num
, struct mbuf
*m
, const struct pktinfo
*pi
)
838 if (num
< 0 || num
>= NETISR_MAX
)
839 panic("Bad isr %d", num
);
845 if (ni
->ni_handler
== NULL
)
846 panic("Unregistered isr %d", num
);
848 ni
->ni_hashck(m
, pi
);