NetBSD/usr.sbin/altq/libaltq/qop_priq.c

524 lines
12 KiB
C

/* $KAME: qop_priq.c,v 1.1 2000/10/18 09:15:19 kjc Exp $ */
/*
* Copyright (C) 2000
* Sony Computer Science Laboratories, Inc. 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, 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 SONY CSL AND CONTRIBUTORS ``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 SONY CSL OR CONTRIBUTORS 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.
*/
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/ioctl.h>
#include <sys/fcntl.h>
#include <net/if.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stddef.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include <syslog.h>
#include <netdb.h>
#include <altq/altq.h>
#include <altq/altq_priq.h>
#include "altq_qop.h"
#include "qop_priq.h"
static int qop_priq_enable_hook(struct ifinfo *ifinfo);
static int priq_attach(struct ifinfo *ifinfo);
static int priq_detach(struct ifinfo *ifinfo);
static int priq_clear(struct ifinfo *ifinfo);
static int priq_enable(struct ifinfo *ifinfo);
static int priq_disable(struct ifinfo *ifinfo);
static int priq_add_class(struct classinfo *clinfo);
static int priq_modify_class(struct classinfo *clinfo, void *arg);
static int priq_delete_class(struct classinfo *clinfo);
static int priq_add_filter(struct fltrinfo *fltrinfo);
static int priq_delete_filter(struct fltrinfo *fltrinfo);
#define PRIQ_DEVICE "/dev/altq/priq"
static int priq_fd = -1;
static int priq_refcount = 0;
static struct qdisc_ops priq_qdisc = {
ALTQT_PRIQ,
"priq",
priq_attach,
priq_detach,
priq_clear,
priq_enable,
priq_disable,
priq_add_class,
priq_modify_class,
priq_delete_class,
priq_add_filter,
priq_delete_filter,
};
#define EQUAL(s1, s2) (strcmp((s1), (s2)) == 0)
/*
* parser interface
*/
int
priq_interface_parser(const char *ifname, int argc, char **argv)
{
u_int bandwidth = 100000000; /* 100Mbps */
u_int tbrsize = 0;
int flags = 0;
/*
* process options
*/
while (argc > 0) {
if (EQUAL(*argv, "bandwidth")) {
argc--; argv++;
if (argc > 0)
bandwidth = atobps(*argv);
} else if (EQUAL(*argv, "tbrsize")) {
argc--; argv++;
if (argc > 0)
tbrsize = atobytes(*argv);
} else if (EQUAL(*argv, "priq")) {
/* just skip */
} else {
LOG(LOG_ERR, 0, "Unknown keyword '%s'\n", argv);
return (0);
}
argc--; argv++;
}
if (qcmd_tbr_register(ifname, bandwidth, tbrsize) != 0)
return (0);
if (qcmd_priq_add_if(ifname, bandwidth, flags) != 0)
return (0);
return (1);
}
int
priq_class_parser(const char *ifname, const char *class_name,
const char *parent_name, int argc, char **argv)
{
int pri = 0, qlimit = 50;
int flags = 0, error;
while (argc > 0) {
if (EQUAL(*argv, "priority")) {
argc--; argv++;
if (argc > 0)
pri = strtoul(*argv, NULL, 0);
} else if (EQUAL(*argv, "qlimit")) {
argc--; argv++;
if (argc > 0)
qlimit = strtoul(*argv, NULL, 0);
} else if (EQUAL(*argv, "default")) {
flags |= PRCF_DEFAULTCLASS;
} else if (EQUAL(*argv, "red")) {
flags |= PRCF_RED;
} else if (EQUAL(*argv, "ecn")) {
flags |= PRCF_ECN;
} else if (EQUAL(*argv, "rio")) {
flags |= PRCF_RIO;
} else if (EQUAL(*argv, "cleardscp")) {
flags |= PRCF_CLEARDSCP;
} else {
LOG(LOG_ERR, 0,
"Unknown keyword '%s' in %s, line %d\n",
*argv, altqconfigfile, line_no);
return (0);
}
argc--; argv++;
}
if ((flags & PRCF_ECN) && (flags & (PRCF_RED|PRCF_RIO)) == 0)
flags |= PRCF_RED;
error = qcmd_priq_add_class(ifname, class_name, pri, qlimit, flags);
if (error) {
LOG(LOG_ERR, errno, "priq_class_parser: %s\n",
qoperror(error));
return (0);
}
return (1);
}
/*
* qcmd api
*/
int
qcmd_priq_add_if(const char *ifname, u_int bandwidth, int flags)
{
int error;
error = qop_priq_add_if(NULL, ifname, bandwidth, flags);
if (error != 0)
LOG(LOG_ERR, errno, "%s: can't add priq on interface '%s'\n",
qoperror(error), ifname);
return (error);
}
int
qcmd_priq_add_class(const char *ifname, const char *class_name,
int pri, int qlimit, int flags)
{
struct ifinfo *ifinfo;
int error = 0;
if ((ifinfo = ifname2ifinfo(ifname)) == NULL)
error = QOPERR_BADIF;
if (error == 0)
error = qop_priq_add_class(NULL, class_name, ifinfo,
pri, qlimit, flags);
if (error != 0)
LOG(LOG_ERR, errno,
"priq: %s: can't add class '%s' on interface '%s'\n",
qoperror(error), class_name, ifname);
return (error);
}
int
qcmd_priq_modify_class(const char *ifname, const char *class_name,
int pri, int qlimit, int flags)
{
struct ifinfo *ifinfo;
struct classinfo *clinfo;
if ((ifinfo = ifname2ifinfo(ifname)) == NULL)
return (QOPERR_BADIF);
if ((clinfo = clname2clinfo(ifinfo, class_name)) == NULL)
return (QOPERR_BADCLASS);
return qop_priq_modify_class(clinfo, pri, qlimit, flags);
}
/*
* qop api
*/
int
qop_priq_add_if(struct ifinfo **rp, const char *ifname,
u_int bandwidth, int flags)
{
struct ifinfo *ifinfo = NULL;
struct priq_ifinfo *priq_ifinfo = NULL;
int error;
if ((priq_ifinfo = calloc(1, sizeof(*priq_ifinfo))) == NULL)
return (QOPERR_NOMEM);
error = qop_add_if(&ifinfo, ifname, bandwidth,
&priq_qdisc, priq_ifinfo);
if (error != 0)
goto err_ret;
/* set enable hook */
ifinfo->enable_hook = qop_priq_enable_hook;
if (rp != NULL)
*rp = ifinfo;
return (0);
err_ret:
if (priq_ifinfo != NULL) {
free(priq_ifinfo);
if (ifinfo != NULL)
ifinfo->private = NULL;
}
return (error);
}
int
qop_priq_add_class(struct classinfo **rp, const char *class_name,
struct ifinfo *ifinfo, int pri, int qlimit, int flags)
{
struct classinfo *clinfo;
struct priq_ifinfo *priq_ifinfo;
struct priq_classinfo *priq_clinfo = NULL;
int error;
priq_ifinfo = ifinfo->private;
if ((flags & PRCF_DEFAULTCLASS) && priq_ifinfo->default_class != NULL)
return (QOPERR_CLASS_INVAL);
if ((priq_clinfo = calloc(1, sizeof(*priq_clinfo))) == NULL) {
error = QOPERR_NOMEM;
goto err_ret;
}
priq_clinfo->pri = pri;
priq_clinfo->qlimit = qlimit;
priq_clinfo->flags = flags;
if ((error = qop_add_class(&clinfo, class_name, ifinfo, NULL,
priq_clinfo)) != 0)
goto err_ret;
if (flags & PRCF_DEFAULTCLASS)
priq_ifinfo->default_class = clinfo;
if (rp != NULL)
*rp = clinfo;
return (0);
err_ret:
if (priq_clinfo != NULL) {
free(priq_clinfo);
clinfo->private = NULL;
}
return (error);
}
int
qop_priq_modify_class(struct classinfo *clinfo,
int pri, int qlimit, int flags)
{
struct priq_classinfo *priq_clinfo, *parent_clinfo;
int error;
priq_clinfo = clinfo->private;
if (clinfo->parent == NULL)
return (QOPERR_CLASS_INVAL);
parent_clinfo = clinfo->parent->private;
priq_clinfo->pri = pri;
priq_clinfo->qlimit = qlimit;
priq_clinfo->flags = flags;
error = qop_modify_class(clinfo, NULL);
if (error == 0)
return (0);
return (error);
}
/*
* sanity check at enabling priq:
* 1. there must one default class for an interface
*/
static int
qop_priq_enable_hook(struct ifinfo *ifinfo)
{
struct priq_ifinfo *priq_ifinfo;
priq_ifinfo = ifinfo->private;
if (priq_ifinfo->default_class == NULL) {
LOG(LOG_ERR, 0, "priq: no default class on interface %s!\n",
ifinfo->ifname);
return (QOPERR_CLASS);
}
return (0);
}
/*
* system call interfaces for qdisc_ops
*/
static int
priq_attach(struct ifinfo *ifinfo)
{
struct priq_interface iface;
memset(&iface, 0, sizeof(iface));
strncpy(iface.ifname, ifinfo->ifname, IFNAMSIZ);
if (priq_fd < 0 &&
(priq_fd = open(PRIQ_DEVICE, O_RDWR)) < 0 &&
(priq_fd = open_module(PRIQ_DEVICE, O_RDWR)) < 0) {
LOG(LOG_ERR, errno, "PRIQ open\n");
return (QOPERR_SYSCALL);
}
priq_refcount++;
memset(&iface, 0, sizeof(iface));
strncpy(iface.ifname, ifinfo->ifname, IFNAMSIZ);
iface.arg = ifinfo->bandwidth;
if (ioctl(priq_fd, PRIQ_IF_ATTACH, &iface) < 0)
return (QOPERR_SYSCALL);
return (0);
}
static int
priq_detach(struct ifinfo *ifinfo)
{
struct priq_interface iface;
memset(&iface, 0, sizeof(iface));
strncpy(iface.ifname, ifinfo->ifname, IFNAMSIZ);
if (ioctl(priq_fd, PRIQ_IF_DETACH, &iface) < 0)
return (QOPERR_SYSCALL);
if (--priq_refcount == 0) {
close(priq_fd);
priq_fd = -1;
}
return (0);
}
static int
priq_clear(struct ifinfo *ifinfo)
{
struct priq_interface iface;
memset(&iface, 0, sizeof(iface));
strncpy(iface.ifname, ifinfo->ifname, IFNAMSIZ);
if (ioctl(priq_fd, PRIQ_CLEAR, &iface) < 0)
return (QOPERR_SYSCALL);
return (0);
}
static int
priq_enable(struct ifinfo *ifinfo)
{
struct priq_interface iface;
memset(&iface, 0, sizeof(iface));
strncpy(iface.ifname, ifinfo->ifname, IFNAMSIZ);
if (ioctl(priq_fd, PRIQ_ENABLE, &iface) < 0)
return (QOPERR_SYSCALL);
return (0);
}
static int
priq_disable(struct ifinfo *ifinfo)
{
struct priq_interface iface;
memset(&iface, 0, sizeof(iface));
strncpy(iface.ifname, ifinfo->ifname, IFNAMSIZ);
if (ioctl(priq_fd, PRIQ_DISABLE, &iface) < 0)
return (QOPERR_SYSCALL);
return (0);
}
static int
priq_add_class(struct classinfo *clinfo)
{
struct priq_add_class class_add;
struct priq_classinfo *priq_clinfo;
struct priq_ifinfo *priq_ifinfo;
priq_ifinfo = clinfo->ifinfo->private;
priq_clinfo = clinfo->private;
memset(&class_add, 0, sizeof(class_add));
strncpy(class_add.iface.ifname, clinfo->ifinfo->ifname, IFNAMSIZ);
class_add.pri = priq_clinfo->pri;
class_add.qlimit = priq_clinfo->qlimit;
class_add.flags = priq_clinfo->flags;
if (ioctl(priq_fd, PRIQ_ADD_CLASS, &class_add) < 0) {
clinfo->handle = PRIQ_NULLCLASS_HANDLE;
return (QOPERR_SYSCALL);
}
clinfo->handle = class_add.class_handle;
return (0);
}
static int
priq_modify_class(struct classinfo *clinfo, void *arg)
{
struct priq_modify_class class_mod;
struct priq_classinfo *priq_clinfo;
priq_clinfo = clinfo->private;
memset(&class_mod, 0, sizeof(class_mod));
strncpy(class_mod.iface.ifname, clinfo->ifinfo->ifname, IFNAMSIZ);
class_mod.class_handle = clinfo->handle;
class_mod.pri = priq_clinfo->pri;
class_mod.qlimit = priq_clinfo->qlimit;
class_mod.flags = priq_clinfo->flags;
if (ioctl(priq_fd, PRIQ_MOD_CLASS, &class_mod) < 0)
return (QOPERR_SYSCALL);
return (0);
}
static int
priq_delete_class(struct classinfo *clinfo)
{
struct priq_delete_class class_delete;
if (clinfo->handle == PRIQ_NULLCLASS_HANDLE)
return (0);
memset(&class_delete, 0, sizeof(class_delete));
strncpy(class_delete.iface.ifname, clinfo->ifinfo->ifname,
IFNAMSIZ);
class_delete.class_handle = clinfo->handle;
if (ioctl(priq_fd, PRIQ_DEL_CLASS, &class_delete) < 0)
return (QOPERR_SYSCALL);
return (0);
}
static int
priq_add_filter(struct fltrinfo *fltrinfo)
{
struct priq_add_filter fltr_add;
memset(&fltr_add, 0, sizeof(fltr_add));
strncpy(fltr_add.iface.ifname, fltrinfo->clinfo->ifinfo->ifname,
IFNAMSIZ);
fltr_add.class_handle = fltrinfo->clinfo->handle;
fltr_add.filter = fltrinfo->fltr;
if (ioctl(priq_fd, PRIQ_ADD_FILTER, &fltr_add) < 0)
return (QOPERR_SYSCALL);
fltrinfo->handle = fltr_add.filter_handle;
return (0);
}
static int
priq_delete_filter(struct fltrinfo *fltrinfo)
{
struct priq_delete_filter fltr_del;
memset(&fltr_del, 0, sizeof(fltr_del));
strncpy(fltr_del.iface.ifname, fltrinfo->clinfo->ifinfo->ifname,
IFNAMSIZ);
fltr_del.filter_handle = fltrinfo->handle;
if (ioctl(priq_fd, PRIQ_DEL_FILTER, &fltr_del) < 0)
return (QOPERR_SYSCALL);
return (0);
}