152 lines
3.2 KiB
C
152 lines
3.2 KiB
C
/*
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* Copyright (c) 2002-2003 Luigi Rizzo
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* Copyright (c) 1996 Alex Nash, Paul Traina, Poul-Henning Kamp
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* Copyright (c) 1994 Ugen J.S.Antsilevich
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*
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* Idea and grammar partially left from:
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* Copyright (c) 1993 Daniel Boulet
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*
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* Redistribution and use in source forms, with and without modification,
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* are permitted provided that this entire comment appears intact.
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*
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* Redistribution in binary form may occur without any restrictions.
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* Obviously, it would be nice if you gave credit where credit is due
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* but requiring it would be too onerous.
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*
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* This software is provided ``AS IS'' without any warranties of any kind.
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*
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* NEW command line interface for IP firewall facility
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*
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* $FreeBSD$
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*
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* altq interface
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include "ipfw2.h"
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#include <err.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <net/if.h> /* IFNAMSIZ */
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#include <net/pfvar.h>
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#include <netinet/in.h> /* in_addr */
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#include <netinet/ip_fw.h>
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/*
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* Map between current altq queue id numbers and names.
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*/
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static TAILQ_HEAD(, pf_altq) altq_entries =
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TAILQ_HEAD_INITIALIZER(altq_entries);
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void
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altq_set_enabled(int enabled)
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{
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int pffd;
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pffd = open("/dev/pf", O_RDWR);
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if (pffd == -1)
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err(EX_UNAVAILABLE,
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"altq support opening pf(4) control device");
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if (enabled) {
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if (ioctl(pffd, DIOCSTARTALTQ) != 0 && errno != EEXIST)
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err(EX_UNAVAILABLE, "enabling altq");
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} else {
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if (ioctl(pffd, DIOCSTOPALTQ) != 0 && errno != ENOENT)
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err(EX_UNAVAILABLE, "disabling altq");
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}
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close(pffd);
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}
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static void
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altq_fetch(void)
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{
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struct pfioc_altq pfioc;
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struct pf_altq *altq;
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int pffd;
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unsigned int mnr;
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static int altq_fetched = 0;
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if (altq_fetched)
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return;
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altq_fetched = 1;
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pffd = open("/dev/pf", O_RDONLY);
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if (pffd == -1) {
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warn("altq support opening pf(4) control device");
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return;
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}
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bzero(&pfioc, sizeof(pfioc));
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if (ioctl(pffd, DIOCGETALTQS, &pfioc) != 0) {
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warn("altq support getting queue list");
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close(pffd);
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return;
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}
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mnr = pfioc.nr;
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for (pfioc.nr = 0; pfioc.nr < mnr; pfioc.nr++) {
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if (ioctl(pffd, DIOCGETALTQ, &pfioc) != 0) {
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if (errno == EBUSY)
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break;
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warn("altq support getting queue list");
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close(pffd);
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return;
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}
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if (pfioc.altq.qid == 0)
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continue;
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altq = safe_calloc(1, sizeof(*altq));
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*altq = pfioc.altq;
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TAILQ_INSERT_TAIL(&altq_entries, altq, entries);
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}
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close(pffd);
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}
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u_int32_t
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altq_name_to_qid(const char *name)
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{
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struct pf_altq *altq;
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altq_fetch();
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TAILQ_FOREACH(altq, &altq_entries, entries)
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if (strcmp(name, altq->qname) == 0)
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break;
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if (altq == NULL)
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errx(EX_DATAERR, "altq has no queue named `%s'", name);
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return altq->qid;
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}
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static const char *
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altq_qid_to_name(u_int32_t qid)
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{
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struct pf_altq *altq;
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altq_fetch();
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TAILQ_FOREACH(altq, &altq_entries, entries)
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if (qid == altq->qid)
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break;
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if (altq == NULL)
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return NULL;
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return altq->qname;
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}
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void
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print_altq_cmd(struct buf_pr *bp, ipfw_insn_altq *altqptr)
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{
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if (altqptr) {
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const char *qname;
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qname = altq_qid_to_name(altqptr->qid);
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if (qname == NULL)
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bprintf(bp, " altq ?<%u>", altqptr->qid);
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else
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bprintf(bp, " altq %s", qname);
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}
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}
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