diff options
author | jake <jake@FreeBSD.org> | 2002-09-22 05:56:41 +0000 |
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committer | jake <jake@FreeBSD.org> | 2002-09-22 05:56:41 +0000 |
commit | e54737666a584849daea897dbaf548d7ea1b8233 (patch) | |
tree | da1088de2fb25dba3e43139bc803c958f4ba8778 /sys/net/netisr.c | |
parent | d56eff1783038f79613ef8f4e96f36ee97576ece (diff) | |
download | FreeBSD-src-e54737666a584849daea897dbaf548d7ea1b8233.zip FreeBSD-src-e54737666a584849daea897dbaf548d7ea1b8233.tar.gz |
Moved netisr code from kern/kern_intr.c to net/netisr.c as threatened in a
comment.
Diffstat (limited to 'sys/net/netisr.c')
-rw-r--r-- | sys/net/netisr.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/sys/net/netisr.c b/sys/net/netisr.c new file mode 100644 index 0000000..cb7bc32 --- /dev/null +++ b/sys/net/netisr.c @@ -0,0 +1,116 @@ +/* + * Copyright (c) 1997, Stefan Esser <se@freebsd.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice unmodified, this list of conditions, and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/proc.h> +#include <sys/interrupt.h> +#include <sys/kernel.h> + +#include <net/netisr.h> + +static void swi_net(void *); + +void *net_ih; +volatile unsigned int netisr; +void (*netisrs[32])(void); + +void +legacy_setsoftnet(void) +{ + swi_sched(net_ih, 0); +} + +int +register_netisr(int num, netisr_t *handler) +{ + + if (num < 0 || num >= (sizeof(netisrs)/sizeof(*netisrs)) ) { + printf("register_netisr: bad isr number: %d\n", num); + return (EINVAL); + } + netisrs[num] = handler; + return (0); +} + +int +unregister_netisr(int num) +{ + + if (num < 0 || num >= (sizeof(netisrs)/sizeof(*netisrs)) ) { + printf("unregister_netisr: bad isr number: %d\n", num); + return (EINVAL); + } + netisrs[num] = NULL; + return (0); +} + +#ifdef DEVICE_POLLING +void netisr_pollmore(void); +#endif + +static void +swi_net(void *dummy) +{ + u_int bits; + int i; + +#ifdef DEVICE_POLLING + for (;;) { + int pollmore; +#endif + bits = atomic_readandclear_int(&netisr); +#ifdef DEVICE_POLLING + if (bits == 0) + return; + pollmore = bits & (1 << NETISR_POLL); +#endif + while ((i = ffs(bits)) != 0) { + i--; + if (netisrs[i] != NULL) + netisrs[i](); + else + printf("swi_net: unregistered isr number: %d.\n", i); + bits &= ~(1 << i); + } +#ifdef DEVICE_POLLING + if (pollmore) + netisr_pollmore(); + } +#endif +} + +static void +start_netisr(void *dummy) +{ + + if (swi_add(NULL, "net", swi_net, NULL, SWI_NET, 0, &net_ih)) + panic("start_netisr"); +} +SYSINIT(start_netisr, SI_SUB_SOFTINTR, SI_ORDER_FIRST, start_netisr, NULL) |