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freebsd-nq/sys/netinet/ipfw/ip_dn_glue.c
Luigi Rizzo c11e54acfc no need to pass an argument to dn_compat_calc_size() 
MFC after:	3 days
2010-04-09 16:06:53 +00:00

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/*-
* Copyright (c) 2010 Riccardo Panicucci, Universita` di Pisa
* 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 THE AUTHOR 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 THE AUTHOR 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.
*/
/*
* $FreeBSD$
*
* Binary compatibility support for /sbin/ipfw RELENG_7 and RELENG_8
*/
#include "opt_inet6.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/module.h>
#include <sys/priv.h>
#include <sys/proc.h>
#include <sys/rwlock.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/time.h>
#include <sys/taskqueue.h>
#include <net/if.h> /* IFNAMSIZ, struct ifaddr, ifq head, lock.h mutex.h */
#include <netinet/in.h>
#include <netinet/ip_var.h> /* ip_output(), IP_FORWARDING */
#include <netinet/ip_fw.h>
#include <netinet/ipfw/ip_fw_private.h>
#include <netinet/ipfw/dn_heap.h>
#include <netinet/ip_dummynet.h>
#include <netinet/ipfw/ip_dn_private.h>
#include <netinet/ipfw/dn_sched.h>
/* FREEBSD7.2 ip_dummynet.h r191715*/
struct dn_heap_entry7 {
int64_t key; /* sorting key. Topmost element is smallest one */
void *object; /* object pointer */
};
struct dn_heap7 {
int size;
int elements;
int offset; /* XXX if > 0 this is the offset of direct ptr to obj */
struct dn_heap_entry7 *p; /* really an array of "size" entries */
};
/* Common to 7.2 and 8 */
struct dn_flow_set {
SLIST_ENTRY(dn_flow_set) next; /* linked list in a hash slot */
u_short fs_nr ; /* flow_set number */
u_short flags_fs;
#define DNOLD_HAVE_FLOW_MASK 0x0001
#define DNOLD_IS_RED 0x0002
#define DNOLD_IS_GENTLE_RED 0x0004
#define DNOLD_QSIZE_IS_BYTES 0x0008 /* queue size is measured in bytes */
#define DNOLD_NOERROR 0x0010 /* do not report ENOBUFS on drops */
#define DNOLD_HAS_PROFILE 0x0020 /* the pipe has a delay profile. */
#define DNOLD_IS_PIPE 0x4000
#define DNOLD_IS_QUEUE 0x8000
struct dn_pipe7 *pipe ; /* pointer to parent pipe */
u_short parent_nr ; /* parent pipe#, 0 if local to a pipe */
int weight ; /* WFQ queue weight */
int qsize ; /* queue size in slots or bytes */
int plr ; /* pkt loss rate (2^31-1 means 100%) */
struct ipfw_flow_id flow_mask ;
/* hash table of queues onto this flow_set */
int rq_size ; /* number of slots */
int rq_elements ; /* active elements */
struct dn_flow_queue7 **rq; /* array of rq_size entries */
u_int32_t last_expired ; /* do not expire too frequently */
int backlogged ; /* #active queues for this flowset */
/* RED parameters */
#define SCALE_RED 16
#define SCALE(x) ( (x) << SCALE_RED )
#define SCALE_VAL(x) ( (x) >> SCALE_RED )
#define SCALE_MUL(x,y) ( ( (x) * (y) ) >> SCALE_RED )
int w_q ; /* queue weight (scaled) */
int max_th ; /* maximum threshold for queue (scaled) */
int min_th ; /* minimum threshold for queue (scaled) */
int max_p ; /* maximum value for p_b (scaled) */
u_int c_1 ; /* max_p/(max_th-min_th) (scaled) */
u_int c_2 ; /* max_p*min_th/(max_th-min_th) (scaled) */
u_int c_3 ; /* for GRED, (1-max_p)/max_th (scaled) */
u_int c_4 ; /* for GRED, 1 - 2*max_p (scaled) */
u_int * w_q_lookup ; /* lookup table for computing (1-w_q)^t */
u_int lookup_depth ; /* depth of lookup table */
int lookup_step ; /* granularity inside the lookup table */
int lookup_weight ; /* equal to (1-w_q)^t / (1-w_q)^(t+1) */
int avg_pkt_size ; /* medium packet size */
int max_pkt_size ; /* max packet size */
};
SLIST_HEAD(dn_flow_set_head, dn_flow_set);
#define DN_IS_PIPE 0x4000
#define DN_IS_QUEUE 0x8000
struct dn_flow_queue7 {
struct dn_flow_queue7 *next ;
struct ipfw_flow_id id ;
struct mbuf *head, *tail ; /* queue of packets */
u_int len ;
u_int len_bytes ;
u_long numbytes;
u_int64_t tot_pkts ; /* statistics counters */
u_int64_t tot_bytes ;
u_int32_t drops ;
int hash_slot ; /* debugging/diagnostic */
/* RED parameters */
int avg ; /* average queue length est. (scaled) */
int count ; /* arrivals since last RED drop */
int random ; /* random value (scaled) */
u_int32_t q_time; /* start of queue idle time */
/* WF2Q+ support */
struct dn_flow_set *fs ; /* parent flow set */
int heap_pos ; /* position (index) of struct in heap */
int64_t sched_time ; /* current time when queue enters ready_heap */
int64_t S,F ; /* start time, finish time */
};
struct dn_pipe7 { /* a pipe */
SLIST_ENTRY(dn_pipe7) next; /* linked list in a hash slot */
int pipe_nr ; /* number */
int bandwidth; /* really, bytes/tick. */
int delay ; /* really, ticks */
struct mbuf *head, *tail ; /* packets in delay line */
/* WF2Q+ */
struct dn_heap7 scheduler_heap ; /* top extract - key Finish time*/
struct dn_heap7 not_eligible_heap; /* top extract- key Start time */
struct dn_heap7 idle_heap ; /* random extract - key Start=Finish time */
int64_t V ; /* virtual time */
int sum; /* sum of weights of all active sessions */
int numbytes;
int64_t sched_time ; /* time pipe was scheduled in ready_heap */
/*
* When the tx clock come from an interface (if_name[0] != '\0'), its name
* is stored below, whereas the ifp is filled when the rule is configured.
*/
char if_name[IFNAMSIZ];
struct ifnet *ifp ;
int ready ; /* set if ifp != NULL and we got a signal from it */
struct dn_flow_set fs ; /* used with fixed-rate flows */
};
SLIST_HEAD(dn_pipe_head7, dn_pipe7);
/* FREEBSD8 ip_dummynet.h r196045 */
struct dn_flow_queue8 {
struct dn_flow_queue8 *next ;
struct ipfw_flow_id id ;
struct mbuf *head, *tail ; /* queue of packets */
u_int len ;
u_int len_bytes ;
uint64_t numbytes ; /* credit for transmission (dynamic queues) */
int64_t extra_bits; /* extra bits simulating unavailable channel */
u_int64_t tot_pkts ; /* statistics counters */
u_int64_t tot_bytes ;
u_int32_t drops ;
int hash_slot ; /* debugging/diagnostic */
/* RED parameters */
int avg ; /* average queue length est. (scaled) */
int count ; /* arrivals since last RED drop */
int random ; /* random value (scaled) */
int64_t idle_time; /* start of queue idle time */
/* WF2Q+ support */
struct dn_flow_set *fs ; /* parent flow set */
int heap_pos ; /* position (index) of struct in heap */
int64_t sched_time ; /* current time when queue enters ready_heap */
int64_t S,F ; /* start time, finish time */
};
struct dn_pipe8 { /* a pipe */
SLIST_ENTRY(dn_pipe8) next; /* linked list in a hash slot */
int pipe_nr ; /* number */
int bandwidth; /* really, bytes/tick. */
int delay ; /* really, ticks */
struct mbuf *head, *tail ; /* packets in delay line */
/* WF2Q+ */
struct dn_heap7 scheduler_heap ; /* top extract - key Finish time*/
struct dn_heap7 not_eligible_heap; /* top extract- key Start time */
struct dn_heap7 idle_heap ; /* random extract - key Start=Finish time */
int64_t V ; /* virtual time */
int sum; /* sum of weights of all active sessions */
/* Same as in dn_flow_queue, numbytes can become large */
int64_t numbytes; /* bits I can transmit (more or less). */
uint64_t burst; /* burst size, scaled: bits * hz */
int64_t sched_time ; /* time pipe was scheduled in ready_heap */
int64_t idle_time; /* start of pipe idle time */
char if_name[IFNAMSIZ];
struct ifnet *ifp ;
int ready ; /* set if ifp != NULL and we got a signal from it */
struct dn_flow_set fs ; /* used with fixed-rate flows */
/* fields to simulate a delay profile */
#define ED_MAX_NAME_LEN 32
char name[ED_MAX_NAME_LEN];
int loss_level;
int samples_no;
int *samples;
};
#define ED_MAX_SAMPLES_NO 1024
struct dn_pipe_max8 {
struct dn_pipe8 pipe;
int samples[ED_MAX_SAMPLES_NO];
};
SLIST_HEAD(dn_pipe_head8, dn_pipe8);
/*
* Changes from 7.2 to 8:
* dn_pipe:
* numbytes from int to int64_t
* add burst (int64_t)
* add idle_time (int64_t)
* add profile
* add struct dn_pipe_max
* add flag DN_HAS_PROFILE
*
* dn_flow_queue
* numbytes from u_long to int64_t
* add extra_bits (int64_t)
* q_time from u_int32_t to int64_t and name idle_time
*
* dn_flow_set unchanged
*
*/
/* NOTE:XXX copied from dummynet.c */
#define O_NEXT(p, len) ((void *)((char *)p + len))
static void
oid_fill(struct dn_id *oid, int len, int type, uintptr_t id)
{
oid->len = len;
oid->type = type;
oid->subtype = 0;
oid->id = id;
}
/* make room in the buffer and move the pointer forward */
static void *
o_next(struct dn_id **o, int len, int type)
{
struct dn_id *ret = *o;
oid_fill(ret, len, type, 0);
*o = O_NEXT(*o, len);
return ret;
}
static size_t pipesize7 = sizeof(struct dn_pipe7);
static size_t pipesize8 = sizeof(struct dn_pipe8);
static size_t pipesizemax8 = sizeof(struct dn_pipe_max8);
/* Indicate 'ipfw' version
* 1: from FreeBSD 7.2
* 0: from FreeBSD 8
* -1: unknow (for now is unused)
*
* It is update when a IP_DUMMYNET_DEL or IP_DUMMYNET_CONFIGURE request arrives
* NOTE: if a IP_DUMMYNET_GET arrives and the 'ipfw' version is unknow,
* it is suppose to be the FreeBSD 8 version.
*/
static int is7 = 0;
static int
convertflags2new(int src)
{
int dst = 0;
if (src & DNOLD_HAVE_FLOW_MASK)
dst |= DN_HAVE_MASK;
if (src & DNOLD_QSIZE_IS_BYTES)
dst |= DN_QSIZE_BYTES;
if (src & DNOLD_NOERROR)
dst |= DN_NOERROR;
if (src & DNOLD_IS_RED)
dst |= DN_IS_RED;
if (src & DNOLD_IS_GENTLE_RED)
dst |= DN_IS_GENTLE_RED;
if (src & DNOLD_HAS_PROFILE)
dst |= DN_HAS_PROFILE;
return dst;
}
static int
convertflags2old(int src)
{
int dst = 0;
if (src & DN_HAVE_MASK)
dst |= DNOLD_HAVE_FLOW_MASK;
if (src & DN_IS_RED)
dst |= DNOLD_IS_RED;
if (src & DN_IS_GENTLE_RED)
dst |= DNOLD_IS_GENTLE_RED;
if (src & DN_NOERROR)
dst |= DNOLD_NOERROR;
if (src & DN_HAS_PROFILE)
dst |= DNOLD_HAS_PROFILE;
if (src & DN_QSIZE_BYTES)
dst |= DNOLD_QSIZE_IS_BYTES;
return dst;
}
static int
dn_compat_del(void *v)
{
struct dn_pipe7 *p = (struct dn_pipe7 *) v;
struct dn_pipe8 *p8 = (struct dn_pipe8 *) v;
struct {
struct dn_id oid;
uintptr_t a[1]; /* add more if we want a list */
} cmd;
/* XXX DN_API_VERSION ??? */
oid_fill((void *)&cmd, sizeof(cmd), DN_CMD_DELETE, DN_API_VERSION);
if (is7) {
if (p->pipe_nr == 0 && p->fs.fs_nr == 0)
return EINVAL;
if (p->pipe_nr != 0 && p->fs.fs_nr != 0)
return EINVAL;
} else {
if (p8->pipe_nr == 0 && p8->fs.fs_nr == 0)
return EINVAL;
if (p8->pipe_nr != 0 && p8->fs.fs_nr != 0)
return EINVAL;
}
if (p->pipe_nr != 0) { /* pipe x delete */
cmd.a[0] = p->pipe_nr;
cmd.oid.subtype = DN_LINK;
} else { /* queue x delete */
cmd.oid.subtype = DN_FS;
cmd.a[0] = (is7) ? p->fs.fs_nr : p8->fs.fs_nr;
}
return do_config(&cmd, cmd.oid.len);
}
static int
dn_compat_config_queue(struct dn_fs *fs, void* v)
{
struct dn_pipe7 *p7 = (struct dn_pipe7 *)v;
struct dn_pipe8 *p8 = (struct dn_pipe8 *)v;
struct dn_flow_set *f;
if (is7)
f = &p7->fs;
else
f = &p8->fs;
fs->fs_nr = f->fs_nr;
fs->sched_nr = f->parent_nr;
fs->flow_mask = f->flow_mask;
fs->buckets = f->rq_size;
fs->qsize = f->qsize;
fs->plr = f->plr;
fs->par[0] = f->weight;
fs->flags = convertflags2new(f->flags_fs);
if (fs->flags & DN_IS_GENTLE_RED || fs->flags & DN_IS_RED) {
fs->w_q = f->w_q;
fs->max_th = f->max_th;
fs->min_th = f->min_th;
fs->max_p = f->max_p;
}
return 0;
}
static int
dn_compat_config_pipe(struct dn_sch *sch, struct dn_link *p,
struct dn_fs *fs, void* v)
{
struct dn_pipe7 *p7 = (struct dn_pipe7 *)v;
struct dn_pipe8 *p8 = (struct dn_pipe8 *)v;
int i = p7->pipe_nr;
sch->sched_nr = i;
sch->oid.subtype = 0;
p->link_nr = i;
fs->fs_nr = i + 2*DN_MAX_ID;
fs->sched_nr = i + DN_MAX_ID;
/* Common to 7 and 8 */
p->bandwidth = p7->bandwidth;
p->delay = p7->delay;
if (!is7) {
/* FreeBSD 8 has burst */
p->burst = p8->burst;
}
/* fill the fifo flowset */
dn_compat_config_queue(fs, v);
fs->fs_nr = i + 2*DN_MAX_ID;
fs->sched_nr = i + DN_MAX_ID;
/* Move scheduler related parameter from fs to sch */
sch->buckets = fs->buckets; /*XXX*/
fs->buckets = 0;
if (fs->flags & DN_HAVE_MASK) {
sch->flags |= DN_HAVE_MASK;
fs->flags &= ~DN_HAVE_MASK;
sch->sched_mask = fs->flow_mask;
bzero(&fs->flow_mask, sizeof(struct ipfw_flow_id));
}
return 0;
}
static int
dn_compat_config_profile(struct dn_profile *pf, struct dn_link *p,
void *v)
{
struct dn_pipe8 *p8 = (struct dn_pipe8 *)v;
p8->samples = &(((struct dn_pipe_max8 *)p8)->samples[0]);
pf->link_nr = p->link_nr;
pf->loss_level = p8->loss_level;
// pf->bandwidth = p->bandwidth; //XXX bandwidth redundant?
pf->samples_no = p8->samples_no;
strncpy(pf->name, p8->name,sizeof(pf->name));
bcopy(p8->samples, pf->samples, sizeof(pf->samples));
return 0;
}
/*
* If p->pipe_nr != 0 the command is 'pipe x config', so need to create
* the three main struct, else only a flowset is created
*/
static int
dn_compat_configure(void *v)
{
struct dn_id *buf = NULL, *base;
struct dn_sch *sch = NULL;
struct dn_link *p = NULL;
struct dn_fs *fs = NULL;
struct dn_profile *pf = NULL;
int lmax;
int error;
struct dn_pipe7 *p7 = (struct dn_pipe7 *)v;
struct dn_pipe8 *p8 = (struct dn_pipe8 *)v;
int i; /* number of object to configure */
lmax = sizeof(struct dn_id); /* command header */
lmax += sizeof(struct dn_sch) + sizeof(struct dn_link) +
sizeof(struct dn_fs) + sizeof(struct dn_profile);
base = buf = malloc(lmax, M_DUMMYNET, M_WAIT|M_ZERO);
o_next(&buf, sizeof(struct dn_id), DN_CMD_CONFIG);
base->id = DN_API_VERSION;
/* pipe_nr is the same in p7 and p8 */
i = p7->pipe_nr;
if (i != 0) { /* pipe config */
sch = o_next(&buf, sizeof(*sch), DN_SCH);
p = o_next(&buf, sizeof(*p), DN_LINK);
fs = o_next(&buf, sizeof(*fs), DN_FS);
error = dn_compat_config_pipe(sch, p, fs, v);
if (error) {
free(buf, M_DUMMYNET);
return error;
}
if (!is7 && p8->samples_no > 0) {
/* Add profiles*/
pf = o_next(&buf, sizeof(*pf), DN_PROFILE);
error = dn_compat_config_profile(pf, p, v);
if (error) {
free(buf, M_DUMMYNET);
return error;
}
}
} else { /* queue config */
fs = o_next(&buf, sizeof(*fs), DN_FS);
error = dn_compat_config_queue(fs, v);
if (error) {
free(buf, M_DUMMYNET);
return error;
}
}
error = do_config(base, (char *)buf - (char *)base);
if (buf)
free(buf, M_DUMMYNET);
return error;
}
int
dn_compat_calc_size(void)
{
int need = 0;
/* XXX use FreeBSD 8 struct size */
/* NOTE:
* - half scheduler: schk_count/2
* - all flowset: fsk_count
* - all flowset queues: queue_count
* - all pipe queue: si_count
*/
need += dn_cfg.schk_count * sizeof(struct dn_pipe8) / 2;
need += dn_cfg.fsk_count * sizeof(struct dn_flow_set);
need += dn_cfg.si_count * sizeof(struct dn_flow_queue8);
need += dn_cfg.queue_count * sizeof(struct dn_flow_queue8);
return need;
}
int
dn_c_copy_q (void *_ni, void *arg)
{
struct copy_args *a = arg;
struct dn_flow_queue7 *fq7 = (struct dn_flow_queue7 *)*a->start;
struct dn_flow_queue8 *fq8 = (struct dn_flow_queue8 *)*a->start;
struct dn_flow *ni = (struct dn_flow *)_ni;
int size = 0;
/* XXX hash slot not set */
/* No difference between 7.2/8 */
fq7->len = ni->length;
fq7->len_bytes = ni->len_bytes;
fq7->id = ni->fid;
if (is7) {
size = sizeof(struct dn_flow_queue7);
fq7->tot_pkts = ni->tot_pkts;
fq7->tot_bytes = ni->tot_bytes;
fq7->drops = ni->drops;
} else {
size = sizeof(struct dn_flow_queue8);
fq8->tot_pkts = ni->tot_pkts;
fq8->tot_bytes = ni->tot_bytes;
fq8->drops = ni->drops;
}
*a->start += size;
return 0;
}
int
dn_c_copy_pipe(struct dn_schk *s, struct copy_args *a, int nq)
{
struct dn_link *l = &s->link;
struct dn_fsk *f = s->fs;
struct dn_pipe7 *pipe7 = (struct dn_pipe7 *)*a->start;
struct dn_pipe8 *pipe8 = (struct dn_pipe8 *)*a->start;
struct dn_flow_set *fs;
int size = 0;
if (is7) {
fs = &pipe7->fs;
size = sizeof(struct dn_pipe7);
} else {
fs = &pipe8->fs;
size = sizeof(struct dn_pipe8);
}
/* These 4 field are the same in pipe7 and pipe8 */
pipe7->next.sle_next = (struct dn_pipe7 *)DN_IS_PIPE;
pipe7->bandwidth = l->bandwidth;
pipe7->delay = l->delay;
pipe7->pipe_nr = l->link_nr - DN_MAX_ID;
if (!is7) {
if (s->profile) {
struct dn_profile *pf = s->profile;
strncpy(pipe8->name, pf->name, sizeof(pf->name));
pipe8->loss_level = pf->loss_level;
pipe8->samples_no = pf->samples_no;
}
pipe8->burst = div64(l->burst , 8 * hz);
}
fs->flow_mask = s->sch.sched_mask;
fs->rq_size = s->sch.buckets ? s->sch.buckets : 1;
fs->parent_nr = l->link_nr - DN_MAX_ID;
fs->qsize = f->fs.qsize;
fs->plr = f->fs.plr;
fs->w_q = f->fs.w_q;
fs->max_th = f->max_th;
fs->min_th = f->min_th;
fs->max_p = f->fs.max_p;
fs->rq_elements = nq;
fs->flags_fs = convertflags2old(f->fs.flags);
*a->start += size;
return 0;
}
int
dn_compat_copy_pipe(struct copy_args *a, void *_o)
{
int have = a->end - *a->start;
int need = 0;
int pipe_size = sizeof(struct dn_pipe8);
int queue_size = sizeof(struct dn_flow_queue8);
int n_queue = 0; /* number of queues */
struct dn_schk *s = (struct dn_schk *)_o;
/* calculate needed space:
* - struct dn_pipe
* - if there are instances, dn_queue * n_instances
*/
n_queue = (s->sch.flags & DN_HAVE_MASK ? dn_ht_entries(s->siht) :
(s->siht ? 1 : 0));
need = pipe_size + queue_size * n_queue;
if (have < need) {
D("have %d < need %d", have, need);
return 1;
}
/* copy pipe */
dn_c_copy_pipe(s, a, n_queue);
/* copy queues */
if (s->sch.flags & DN_HAVE_MASK)
dn_ht_scan(s->siht, dn_c_copy_q, a);
else if (s->siht)
dn_c_copy_q(s->siht, a);
return 0;
}
int
dn_c_copy_fs(struct dn_fsk *f, struct copy_args *a, int nq)
{
struct dn_flow_set *fs = (struct dn_flow_set *)*a->start;
fs->next.sle_next = (struct dn_flow_set *)DN_IS_QUEUE;
fs->fs_nr = f->fs.fs_nr;
fs->qsize = f->fs.qsize;
fs->plr = f->fs.plr;
fs->w_q = f->fs.w_q;
fs->max_th = f->max_th;
fs->min_th = f->min_th;
fs->max_p = f->fs.max_p;
fs->flow_mask = f->fs.flow_mask;
fs->rq_elements = nq;
fs->rq_size = (f->fs.buckets ? f->fs.buckets : 1);
fs->parent_nr = f->fs.sched_nr;
fs->weight = f->fs.par[0];
fs->flags_fs = convertflags2old(f->fs.flags);
*a->start += sizeof(struct dn_flow_set);
return 0;
}
int
dn_compat_copy_queue(struct copy_args *a, void *_o)
{
int have = a->end - *a->start;
int need = 0;
int fs_size = sizeof(struct dn_flow_set);
int queue_size = sizeof(struct dn_flow_queue8);
struct dn_fsk *fs = (struct dn_fsk *)_o;
int n_queue = 0; /* number of queues */
n_queue = (fs->fs.flags & DN_HAVE_MASK ? dn_ht_entries(fs->qht) :
(fs->qht ? 1 : 0));
need = fs_size + queue_size * n_queue;
if (have < need) {
D("have < need");
return 1;
}
/* copy flowset */
dn_c_copy_fs(fs, a, n_queue);
/* copy queues */
if (fs->fs.flags & DN_HAVE_MASK)
dn_ht_scan(fs->qht, dn_c_copy_q, a);
else if (fs->qht)
dn_c_copy_q(fs->qht, a);
return 0;
}
int
copy_data_helper_compat(void *_o, void *_arg)
{
struct copy_args *a = _arg;
if (a->type == DN_COMPAT_PIPE) {
struct dn_schk *s = _o;
if (s->sch.oid.subtype != 1 || s->sch.sched_nr <= DN_MAX_ID) {
return 0; /* not old type */
}
/* copy pipe parameters, and if instance exists, copy
* other parameters and eventually queues.
*/
if(dn_compat_copy_pipe(a, _o))
return DNHT_SCAN_END;
} else if (a->type == DN_COMPAT_QUEUE) {
struct dn_fsk *fs = _o;
if (fs->fs.fs_nr >= DN_MAX_ID)
return 0;
if (dn_compat_copy_queue(a, _o))
return DNHT_SCAN_END;
}
return 0;
}
/* Main function to manage old requests */
int
ip_dummynet_compat(struct sockopt *sopt)
{
int error=0;
void *v = NULL;
struct dn_id oid;
/* Lenght of data, used to found ipfw version... */
int len = sopt->sopt_valsize;
/* len can be 0 if command was dummynet_flush */
if (len == pipesize7) {
D("setting compatibility with FreeBSD 7.2");
is7 = 1;
}
else if (len == pipesize8 || len == pipesizemax8) {
D("setting compatibility with FreeBSD 8");
is7 = 0;
}
switch (sopt->sopt_name) {
default:
printf("dummynet: -- unknown option %d", sopt->sopt_name);
error = EINVAL;
break;
case IP_DUMMYNET_FLUSH:
oid_fill(&oid, sizeof(oid), DN_CMD_FLUSH, DN_API_VERSION);
do_config(&oid, oid.len);
break;
case IP_DUMMYNET_DEL:
v = malloc(len, M_TEMP, M_WAITOK);
error = sooptcopyin(sopt, v, len, len);
if (error)
break;
error = dn_compat_del(v);
free(v, M_DUMMYNET);
break;
case IP_DUMMYNET_CONFIGURE:
v = malloc(len, M_TEMP, M_WAITOK);
error = sooptcopyin(sopt, v, len, len);
if (error)
break;
error = dn_compat_configure(v);
free(v, M_DUMMYNET);
break;
case IP_DUMMYNET_GET: {
void *buf;
int ret;
int original_size = sopt->sopt_valsize;
int size;
ret = dummynet_get(sopt, &buf);
if (ret)
return 0;//XXX ?
size = sopt->sopt_valsize;
sopt->sopt_valsize = original_size;
D("size=%d, buf=%p", size, buf);
ret = sooptcopyout(sopt, buf, size);
if (ret)
printf(" %s ERROR sooptcopyout\n", __FUNCTION__);
if (buf)
free(buf, M_DUMMYNET);
}
}
return error;
}
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