sys/rump/librump/rumpnet/netisr.c

   1 /*      $NetBSD: netisr.c,v 1.3 2009/03/18 10:22:45 cegger Exp $        */
   2
   3 /*
   4  * Copyright (c) 2008 Antti Kantee.  All Rights Reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include <sys/cdefs.h>
  29 __KERNEL_RCSID(0, "$NetBSD: netisr.c,v 1.3 2009/03/18 10:22:45 cegger Exp $");
  30
  31 #include <sys/param.h>
  32 #include <sys/intr.h>
  33
  34 #include <netinet/in.h>
  35 #include <netinet/ip_var.h>
  36 #include <netinet/if_inarp.h>
  37 #include <netinet/ip6.h>
  38 #include <netinet6/ip6_var.h>
  39 #include <net/netisr.h>
  40
  41 #include "rump_net_private.h"
  42
  43 static void *netisrs[NETISR_MAX];
  44 void
  45 schednetisr(int isr)
  46 {
  47
  48         softint_schedule(netisrs[isr]);
  49 }
  50
  51 /*
  52  * Provide weak aliases purely for linkage in case the real
  53  * networking stack isn't used
  54  */
  55 void __ipintr_stub(void);
  56 void
  57 __ipintr_stub(void)
  58 {
  59
  60         panic("ipintr called but networking stack missing");
  61 }
  62 __weak_alias(ipintr,__ipintr_stub);
  63
  64 void __arpintr_stub(void);
  65 void
  66 __arpintr_stub(void)
  67 {
  68
  69         panic("arpintr called but networking stack missing");
  70 }
  71 __weak_alias(arpintr,__arpintr_stub);
  72
  73 void __ip6intr_stub(void);
  74 void
  75 __ip6intr_stub(void)
  76 {
  77
  78         panic("ip6intr called but networking stack missing");
  79 }
  80 __weak_alias(ip6intr,__ip6intr_stub);
  81
  82 void
  83 rump_netisr_init(void)
  84 {
  85
  86         netisrs[NETISR_IP] = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE,
  87             (void (*)(void *))ipintr, NULL);
  88         netisrs[NETISR_ARP] = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE,
  89             (void (*)(void *))arpintr, NULL);
  90         netisrs[NETISR_IPV6] = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE,
  91             (void (*)(void *))ip6intr, NULL);
  92 }