X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/ff6e181ae92fc6f1e89841290f461d1f2f9badd9..7ee9d059c4eecf68ae4f8b0fb99ae2471eda79af:/bsd/netinet/ip_dummynet.c diff --git a/bsd/netinet/ip_dummynet.c b/bsd/netinet/ip_dummynet.c index 9a94adfed..048cff004 100644 --- a/bsd/netinet/ip_dummynet.c +++ b/bsd/netinet/ip_dummynet.c @@ -1,14 +1,19 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2010 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER @@ -18,7 +23,7 @@ * Please see the License for the specific language governing rights and * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1998-2002 Luigi Rizzo, Universita` di Pisa @@ -84,6 +89,7 @@ #include #include #include +//#include #include #include #include @@ -95,17 +101,16 @@ #include #include -#if BRIDGE -#include /* for struct arpcom */ -#include -#endif - /* * We keep a private variable for the simulation time, but we could * probably use an existing one ("softticks" in sys/kern/kern_timer.c) */ static dn_key curr_time = 0 ; /* current simulation time */ +/* this is for the timer that fires to call dummynet() - we only enable the timer when + there are packets to process, otherwise it's disabled */ +static int timer_enabled = 0; + static int dn_hash_size = 64 ; /* default hash size */ /* statistics on number of queue searches and search steps */ @@ -117,6 +122,8 @@ static int red_lookup_depth = 256; /* RED - default lookup table depth */ static int red_avg_pkt_size = 512; /* RED - default medium packet size */ static int red_max_pkt_size = 1500; /* RED - default max packet size */ +static int serialize = 0; + /* * Three heaps contain queues and pipes that the scheduler handles: * @@ -133,44 +140,59 @@ static int heap_init(struct dn_heap *h, int size) ; static int heap_insert (struct dn_heap *h, dn_key key1, void *p); static void heap_extract(struct dn_heap *h, void *obj); -static void transmit_event(struct dn_pipe *pipe); -static void ready_event(struct dn_flow_queue *q); -static struct dn_pipe *all_pipes = NULL ; /* list of all pipes */ -static struct dn_flow_set *all_flow_sets = NULL ;/* list of all flow_sets */ +static void transmit_event(struct dn_pipe *pipe, struct mbuf **head, + struct mbuf **tail); +static void ready_event(struct dn_flow_queue *q, struct mbuf **head, + struct mbuf **tail); +static void ready_event_wfq(struct dn_pipe *p, struct mbuf **head, + struct mbuf **tail); + +/* + * Packets are retrieved from queues in Dummynet in chains instead of + * packet-by-packet. The entire list of packets is first dequeued and + * sent out by the following function. + */ +static void dummynet_send(struct mbuf *m); + +#define HASHSIZE 16 +#define HASH(num) ((((num) >> 8) ^ ((num) >> 4) ^ (num)) & 0x0f) +static struct dn_pipe_head pipehash[HASHSIZE]; /* all pipes */ +static struct dn_flow_set_head flowsethash[HASHSIZE]; /* all flowsets */ + #ifdef SYSCTL_NODE SYSCTL_NODE(_net_inet_ip, OID_AUTO, dummynet, - CTLFLAG_RW, 0, "Dummynet"); + CTLFLAG_RW | CTLFLAG_LOCKED, 0, "Dummynet"); SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, hash_size, - CTLFLAG_RW, &dn_hash_size, 0, "Default hash table size"); -SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, curr_time, - CTLFLAG_RD, &curr_time, 0, "Current tick"); + CTLFLAG_RW | CTLFLAG_LOCKED, &dn_hash_size, 0, "Default hash table size"); +SYSCTL_QUAD(_net_inet_ip_dummynet, OID_AUTO, curr_time, + CTLFLAG_RD | CTLFLAG_LOCKED, &curr_time, "Current tick"); SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, ready_heap, - CTLFLAG_RD, &ready_heap.size, 0, "Size of ready heap"); + CTLFLAG_RD | CTLFLAG_LOCKED, &ready_heap.size, 0, "Size of ready heap"); SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, extract_heap, - CTLFLAG_RD, &extract_heap.size, 0, "Size of extract heap"); + CTLFLAG_RD | CTLFLAG_LOCKED, &extract_heap.size, 0, "Size of extract heap"); SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, searches, - CTLFLAG_RD, &searches, 0, "Number of queue searches"); + CTLFLAG_RD | CTLFLAG_LOCKED, &searches, 0, "Number of queue searches"); SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, search_steps, - CTLFLAG_RD, &search_steps, 0, "Number of queue search steps"); + CTLFLAG_RD | CTLFLAG_LOCKED, &search_steps, 0, "Number of queue search steps"); SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, expire, - CTLFLAG_RW, &pipe_expire, 0, "Expire queue if empty"); + CTLFLAG_RW | CTLFLAG_LOCKED, &pipe_expire, 0, "Expire queue if empty"); SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, max_chain_len, - CTLFLAG_RW, &dn_max_ratio, 0, + CTLFLAG_RW | CTLFLAG_LOCKED, &dn_max_ratio, 0, "Max ratio between dynamic queues and buckets"); SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, red_lookup_depth, - CTLFLAG_RD, &red_lookup_depth, 0, "Depth of RED lookup table"); + CTLFLAG_RD | CTLFLAG_LOCKED, &red_lookup_depth, 0, "Depth of RED lookup table"); SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, red_avg_pkt_size, - CTLFLAG_RD, &red_avg_pkt_size, 0, "RED Medium packet size"); + CTLFLAG_RD | CTLFLAG_LOCKED, &red_avg_pkt_size, 0, "RED Medium packet size"); SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, red_max_pkt_size, - CTLFLAG_RD, &red_max_pkt_size, 0, "RED Max packet size"); + CTLFLAG_RD | CTLFLAG_LOCKED, &red_max_pkt_size, 0, "RED Max packet size"); #endif #ifdef DUMMYNET_DEBUG int dummynet_debug = 0; #ifdef SYSCTL_NODE -SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, debug, CTLFLAG_RW, &dummynet_debug, +SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, debug, CTLFLAG_RW | CTLFLAG_LOCKED, &dummynet_debug, 0, "control debugging printfs"); #endif #define DPRINTF(X) if (dummynet_debug) printf X @@ -178,11 +200,18 @@ SYSCTL_INT(_net_inet_ip_dummynet, OID_AUTO, debug, CTLFLAG_RW, &dummynet_debug, #define DPRINTF(X) #endif +/* contrary to the comment above random(), it does not actually + * return a value [0, 2^31 - 1], which breaks plr amongst other + * things. Masking it should work even if the behavior of + * the function is fixed. + */ +#define MY_RANDOM (random() & 0x7FFFFFFF) + /* dummynet lock */ -lck_grp_t *dn_mutex_grp; -lck_grp_attr_t *dn_mutex_grp_attr; -lck_attr_t *dn_mutex_attr; -lck_mtx_t *dn_mutex; +static lck_grp_t *dn_mutex_grp; +static lck_grp_attr_t *dn_mutex_grp_attr; +static lck_attr_t *dn_mutex_attr; +static lck_mtx_t *dn_mutex; static int config_pipe(struct dn_pipe *p); static int ip_dn_ctl(struct sockopt *sopt); @@ -195,7 +224,18 @@ static void dn_rule_delete(void *); int if_tx_rdy(struct ifnet *ifp); -extern lck_mtx_t *rt_mtx; /* route global lock */ +static void cp_flow_set_to_64_user(struct dn_flow_set *set, struct dn_flow_set_64 *fs_bp); +static void cp_queue_to_64_user( struct dn_flow_queue *q, struct dn_flow_queue_64 *qp); +static char *cp_pipe_to_64_user(struct dn_pipe *p, struct dn_pipe_64 *pipe_bp); +static char* dn_copy_set_64(struct dn_flow_set *set, char *bp); +static int cp_pipe_from_user_64( struct sockopt *sopt, struct dn_pipe *p ); + +static void cp_flow_set_to_32_user(struct dn_flow_set *set, struct dn_flow_set_32 *fs_bp); +static void cp_queue_to_32_user( struct dn_flow_queue *q, struct dn_flow_queue_32 *qp); +static char *cp_pipe_to_32_user(struct dn_pipe *p, struct dn_pipe_32 *pipe_bp); +static char* dn_copy_set_32(struct dn_flow_set *set, char *bp); +static int cp_pipe_from_user_32( struct sockopt *sopt, struct dn_pipe *p ); + /* * Heap management functions. @@ -216,6 +256,282 @@ extern lck_mtx_t *rt_mtx; /* route global lock */ #define HEAP_SWAP(a, b, buffer) { buffer = a ; a = b ; b = buffer ; } #define HEAP_INCREMENT 15 + +int cp_pipe_from_user_32( struct sockopt *sopt, struct dn_pipe *p ) +{ + struct dn_pipe_32 user_pipe_32; + int error=0; + + error = sooptcopyin(sopt, &user_pipe_32, sizeof(struct dn_pipe_32), sizeof(struct dn_pipe_32)); + if ( !error ){ + p->pipe_nr = user_pipe_32.pipe_nr; + p->bandwidth = user_pipe_32.bandwidth; + p->delay = user_pipe_32.delay; + p->V = user_pipe_32.V; + p->sum = user_pipe_32.sum; + p->numbytes = user_pipe_32.numbytes; + p->sched_time = user_pipe_32.sched_time; + bcopy( user_pipe_32.if_name, p->if_name, IFNAMSIZ); + p->ready = user_pipe_32.ready; + + p->fs.fs_nr = user_pipe_32.fs.fs_nr; + p->fs.flags_fs = user_pipe_32.fs.flags_fs; + p->fs.parent_nr = user_pipe_32.fs.parent_nr; + p->fs.weight = user_pipe_32.fs.weight; + p->fs.qsize = user_pipe_32.fs.qsize; + p->fs.plr = user_pipe_32.fs.plr; + p->fs.flow_mask = user_pipe_32.fs.flow_mask; + p->fs.rq_size = user_pipe_32.fs.rq_size; + p->fs.rq_elements = user_pipe_32.fs.rq_elements; + p->fs.last_expired = user_pipe_32.fs.last_expired; + p->fs.backlogged = user_pipe_32.fs.backlogged; + p->fs.w_q = user_pipe_32.fs.w_q; + p->fs.max_th = user_pipe_32.fs.max_th; + p->fs.min_th = user_pipe_32.fs.min_th; + p->fs.max_p = user_pipe_32.fs.max_p; + p->fs.c_1 = user_pipe_32.fs.c_1; + p->fs.c_2 = user_pipe_32.fs.c_2; + p->fs.c_3 = user_pipe_32.fs.c_3; + p->fs.c_4 = user_pipe_32.fs.c_4; + p->fs.lookup_depth = user_pipe_32.fs.lookup_depth; + p->fs.lookup_step = user_pipe_32.fs.lookup_step; + p->fs.lookup_weight = user_pipe_32.fs.lookup_weight; + p->fs.avg_pkt_size = user_pipe_32.fs.avg_pkt_size; + p->fs.max_pkt_size = user_pipe_32.fs.max_pkt_size; + } + return error; +} + + +int cp_pipe_from_user_64( struct sockopt *sopt, struct dn_pipe *p ) +{ + struct dn_pipe_64 user_pipe_64; + int error=0; + + error = sooptcopyin(sopt, &user_pipe_64, sizeof(struct dn_pipe_64), sizeof(struct dn_pipe_64)); + if ( !error ){ + p->pipe_nr = user_pipe_64.pipe_nr; + p->bandwidth = user_pipe_64.bandwidth; + p->delay = user_pipe_64.delay; + p->V = user_pipe_64.V; + p->sum = user_pipe_64.sum; + p->numbytes = user_pipe_64.numbytes; + p->sched_time = user_pipe_64.sched_time; + bcopy( user_pipe_64.if_name, p->if_name, IFNAMSIZ); + p->ready = user_pipe_64.ready; + + p->fs.fs_nr = user_pipe_64.fs.fs_nr; + p->fs.flags_fs = user_pipe_64.fs.flags_fs; + p->fs.parent_nr = user_pipe_64.fs.parent_nr; + p->fs.weight = user_pipe_64.fs.weight; + p->fs.qsize = user_pipe_64.fs.qsize; + p->fs.plr = user_pipe_64.fs.plr; + p->fs.flow_mask = user_pipe_64.fs.flow_mask; + p->fs.rq_size = user_pipe_64.fs.rq_size; + p->fs.rq_elements = user_pipe_64.fs.rq_elements; + p->fs.last_expired = user_pipe_64.fs.last_expired; + p->fs.backlogged = user_pipe_64.fs.backlogged; + p->fs.w_q = user_pipe_64.fs.w_q; + p->fs.max_th = user_pipe_64.fs.max_th; + p->fs.min_th = user_pipe_64.fs.min_th; + p->fs.max_p = user_pipe_64.fs.max_p; + p->fs.c_1 = user_pipe_64.fs.c_1; + p->fs.c_2 = user_pipe_64.fs.c_2; + p->fs.c_3 = user_pipe_64.fs.c_3; + p->fs.c_4 = user_pipe_64.fs.c_4; + p->fs.lookup_depth = user_pipe_64.fs.lookup_depth; + p->fs.lookup_step = user_pipe_64.fs.lookup_step; + p->fs.lookup_weight = user_pipe_64.fs.lookup_weight; + p->fs.avg_pkt_size = user_pipe_64.fs.avg_pkt_size; + p->fs.max_pkt_size = user_pipe_64.fs.max_pkt_size; + } + return error; +} + +static void +cp_flow_set_to_32_user(struct dn_flow_set *set, struct dn_flow_set_32 *fs_bp) +{ + fs_bp->fs_nr = set->fs_nr; + fs_bp->flags_fs = set->flags_fs ; + fs_bp->parent_nr = set->parent_nr ; + fs_bp->weight = set->weight ; + fs_bp->qsize = set->qsize ; + fs_bp->plr = set->plr ; + fs_bp->flow_mask = set->flow_mask ; + fs_bp->rq_size = set->rq_size ; + fs_bp->rq_elements = set->rq_elements ; + fs_bp->last_expired = set->last_expired ; + fs_bp->backlogged = set->backlogged ; + fs_bp->w_q = set->w_q ; + fs_bp->max_th = set->max_th ; + fs_bp->min_th = set->min_th ; + fs_bp->max_p = set->max_p ; + fs_bp->c_1 = set->c_1 ; + fs_bp->c_2 = set->c_2 ; + fs_bp->c_3 = set->c_3 ; + fs_bp->c_4 = set->c_4 ; + fs_bp->w_q_lookup = CAST_DOWN_EXPLICIT(user32_addr_t, set->w_q_lookup) ; + fs_bp->lookup_depth = set->lookup_depth ; + fs_bp->lookup_step = set->lookup_step ; + fs_bp->lookup_weight = set->lookup_weight ; + fs_bp->avg_pkt_size = set->avg_pkt_size ; + fs_bp->max_pkt_size = set->max_pkt_size ; +} + +static void +cp_flow_set_to_64_user(struct dn_flow_set *set, struct dn_flow_set_64 *fs_bp) +{ + fs_bp->fs_nr = set->fs_nr; + fs_bp->flags_fs = set->flags_fs ; + fs_bp->parent_nr = set->parent_nr ; + fs_bp->weight = set->weight ; + fs_bp->qsize = set->qsize ; + fs_bp->plr = set->plr ; + fs_bp->flow_mask = set->flow_mask ; + fs_bp->rq_size = set->rq_size ; + fs_bp->rq_elements = set->rq_elements ; + fs_bp->last_expired = set->last_expired ; + fs_bp->backlogged = set->backlogged ; + fs_bp->w_q = set->w_q ; + fs_bp->max_th = set->max_th ; + fs_bp->min_th = set->min_th ; + fs_bp->max_p = set->max_p ; + fs_bp->c_1 = set->c_1 ; + fs_bp->c_2 = set->c_2 ; + fs_bp->c_3 = set->c_3 ; + fs_bp->c_4 = set->c_4 ; + fs_bp->w_q_lookup = CAST_DOWN(user64_addr_t, set->w_q_lookup) ; + fs_bp->lookup_depth = set->lookup_depth ; + fs_bp->lookup_step = set->lookup_step ; + fs_bp->lookup_weight = set->lookup_weight ; + fs_bp->avg_pkt_size = set->avg_pkt_size ; + fs_bp->max_pkt_size = set->max_pkt_size ; +} + +static +void cp_queue_to_32_user( struct dn_flow_queue *q, struct dn_flow_queue_32 *qp) +{ + qp->id = q->id; + qp->len = q->len; + qp->len_bytes = q->len_bytes; + qp->numbytes = q->numbytes; + qp->tot_pkts = q->tot_pkts; + qp->tot_bytes = q->tot_bytes; + qp->drops = q->drops; + qp->hash_slot = q->hash_slot; + qp->avg = q->avg; + qp->count = q->count; + qp->random = q->random; + qp->q_time = q->q_time; + qp->heap_pos = q->heap_pos; + qp->sched_time = q->sched_time; + qp->S = q->S; + qp->F = q->F; +} + +static +void cp_queue_to_64_user( struct dn_flow_queue *q, struct dn_flow_queue_64 *qp) +{ + qp->id = q->id; + qp->len = q->len; + qp->len_bytes = q->len_bytes; + qp->numbytes = q->numbytes; + qp->tot_pkts = q->tot_pkts; + qp->tot_bytes = q->tot_bytes; + qp->drops = q->drops; + qp->hash_slot = q->hash_slot; + qp->avg = q->avg; + qp->count = q->count; + qp->random = q->random; + qp->q_time = q->q_time; + qp->heap_pos = q->heap_pos; + qp->sched_time = q->sched_time; + qp->S = q->S; + qp->F = q->F; +} + +static +char *cp_pipe_to_32_user(struct dn_pipe *p, struct dn_pipe_32 *pipe_bp) +{ + char *bp; + + pipe_bp->pipe_nr = p->pipe_nr; + pipe_bp->bandwidth = p->bandwidth; + pipe_bp->delay = p->delay; + bcopy( &(p->scheduler_heap), &(pipe_bp->scheduler_heap), sizeof(struct dn_heap_32)); + pipe_bp->scheduler_heap.p = CAST_DOWN_EXPLICIT(user32_addr_t, pipe_bp->scheduler_heap.p); + bcopy( &(p->not_eligible_heap), &(pipe_bp->not_eligible_heap), sizeof(struct dn_heap_32)); + pipe_bp->not_eligible_heap.p = CAST_DOWN_EXPLICIT(user32_addr_t, pipe_bp->not_eligible_heap.p); + bcopy( &(p->idle_heap), &(pipe_bp->idle_heap), sizeof(struct dn_heap_32)); + pipe_bp->idle_heap.p = CAST_DOWN_EXPLICIT(user32_addr_t, pipe_bp->idle_heap.p); + pipe_bp->V = p->V; + pipe_bp->sum = p->sum; + pipe_bp->numbytes = p->numbytes; + pipe_bp->sched_time = p->sched_time; + bcopy( p->if_name, pipe_bp->if_name, IFNAMSIZ); + pipe_bp->ifp = CAST_DOWN_EXPLICIT(user32_addr_t, p->ifp); + pipe_bp->ready = p->ready; + + cp_flow_set_to_32_user( &(p->fs), &(pipe_bp->fs)); + + pipe_bp->delay = (pipe_bp->delay * 1000) / (hz*10) ; + /* + * XXX the following is a hack based on ->next being the + * first field in dn_pipe and dn_flow_set. The correct + * solution would be to move the dn_flow_set to the beginning + * of struct dn_pipe. + */ + pipe_bp->next = CAST_DOWN_EXPLICIT( user32_addr_t, DN_IS_PIPE ); + /* clean pointers */ + pipe_bp->head = pipe_bp->tail = (user32_addr_t) 0 ; + pipe_bp->fs.next = (user32_addr_t)0 ; + pipe_bp->fs.pipe = (user32_addr_t)0 ; + pipe_bp->fs.rq = (user32_addr_t)0 ; + bp = ((char *)pipe_bp) + sizeof(struct dn_pipe_32); + return( dn_copy_set_32( &(p->fs), bp) ); +} + +static +char *cp_pipe_to_64_user(struct dn_pipe *p, struct dn_pipe_64 *pipe_bp) +{ + char *bp; + + pipe_bp->pipe_nr = p->pipe_nr; + pipe_bp->bandwidth = p->bandwidth; + pipe_bp->delay = p->delay; + bcopy( &(p->scheduler_heap), &(pipe_bp->scheduler_heap), sizeof(struct dn_heap_64)); + pipe_bp->scheduler_heap.p = CAST_DOWN(user64_addr_t, pipe_bp->scheduler_heap.p); + bcopy( &(p->not_eligible_heap), &(pipe_bp->not_eligible_heap), sizeof(struct dn_heap_64)); + pipe_bp->not_eligible_heap.p = CAST_DOWN(user64_addr_t, pipe_bp->not_eligible_heap.p); + bcopy( &(p->idle_heap), &(pipe_bp->idle_heap), sizeof(struct dn_heap_64)); + pipe_bp->idle_heap.p = CAST_DOWN(user64_addr_t, pipe_bp->idle_heap.p); + pipe_bp->V = p->V; + pipe_bp->sum = p->sum; + pipe_bp->numbytes = p->numbytes; + pipe_bp->sched_time = p->sched_time; + bcopy( p->if_name, pipe_bp->if_name, IFNAMSIZ); + pipe_bp->ifp = CAST_DOWN(user64_addr_t, p->ifp); + pipe_bp->ready = p->ready; + + cp_flow_set_to_64_user( &(p->fs), &(pipe_bp->fs)); + + pipe_bp->delay = (pipe_bp->delay * 1000) / (hz*10) ; + /* + * XXX the following is a hack based on ->next being the + * first field in dn_pipe and dn_flow_set. The correct + * solution would be to move the dn_flow_set to the beginning + * of struct dn_pipe. + */ + pipe_bp->next = CAST_DOWN( user64_addr_t, DN_IS_PIPE ); + /* clean pointers */ + pipe_bp->head = pipe_bp->tail = USER_ADDR_NULL ; + pipe_bp->fs.next = USER_ADDR_NULL ; + pipe_bp->fs.pipe = USER_ADDR_NULL ; + pipe_bp->fs.rq = USER_ADDR_NULL ; + bp = ((char *)pipe_bp) + sizeof(struct dn_pipe_64); + return( dn_copy_set_64( &(p->fs), bp) ); +} + static int heap_init(struct dn_heap *h, int new_size) { @@ -297,9 +613,9 @@ heap_insert(struct dn_heap *h, dn_key key1, void *p) static void heap_extract(struct dn_heap *h, void *obj) { - int child, father, max = h->elements - 1 ; + int child, father, maxelt = h->elements - 1 ; - if (max < 0) { + if (maxelt < 0) { printf("dummynet: warning, extract from empty heap 0x%p\n", h); return ; } @@ -316,8 +632,8 @@ heap_extract(struct dn_heap *h, void *obj) } RESET_OFFSET(h, father); child = HEAP_LEFT(father) ; /* left child */ - while (child <= max) { /* valid entry */ - if (child != max && DN_KEY_LT(h->p[child+1].key, h->p[child].key) ) + while (child <= maxelt) { /* valid entry */ + if (child != maxelt && DN_KEY_LT(h->p[child+1].key, h->p[child].key) ) child = child+1 ; /* take right child, otherwise left */ h->p[father] = h->p[child] ; SET_OFFSET(h, father); @@ -325,56 +641,15 @@ heap_extract(struct dn_heap *h, void *obj) child = HEAP_LEFT(child) ; /* left child for next loop */ } h->elements-- ; - if (father != max) { + if (father != maxelt) { /* * Fill hole with last entry and bubble up, reusing the insert code */ - h->p[father] = h->p[max] ; + h->p[father] = h->p[maxelt] ; heap_insert(h, father, NULL); /* this one cannot fail */ } } -#if 0 -/* - * change object position and update references - * XXX this one is never used! - */ -static void -heap_move(struct dn_heap *h, dn_key new_key, void *object) -{ - int temp; - int i ; - int max = h->elements-1 ; - struct dn_heap_entry buf ; - - if (h->offset <= 0) - panic("cannot move items on this heap"); - - i = *((int *)((char *)object + h->offset)); - if (DN_KEY_LT(new_key, h->p[i].key) ) { /* must move up */ - h->p[i].key = new_key ; - for (; i>0 && DN_KEY_LT(new_key, h->p[(temp = HEAP_FATHER(i))].key) ; - i = temp ) { /* bubble up */ - HEAP_SWAP(h->p[i], h->p[temp], buf) ; - SET_OFFSET(h, i); - } - } else { /* must move down */ - h->p[i].key = new_key ; - while ( (temp = HEAP_LEFT(i)) <= max ) { /* found left child */ - if ((temp != max) && DN_KEY_GT(h->p[temp].key, h->p[temp+1].key)) - temp++ ; /* select child with min key */ - if (DN_KEY_GT(new_key, h->p[temp].key)) { /* go down */ - HEAP_SWAP(h->p[i], h->p[temp], buf) ; - SET_OFFSET(h, i); - } else - break ; - i = temp ; - } - } - SET_OFFSET(h, i); -} -#endif /* heap_move, unused */ - /* * heapify() will reorganize data inside an array to maintain the * heap property. It is needed when we delete a bunch of entries. @@ -396,7 +671,7 @@ heap_free(struct dn_heap *h) { if (h->size >0 ) FREE(h->p, M_DUMMYNET); - bzero(h, sizeof(*h) ); + bzero(h, sizeof(*h)); } /* @@ -439,79 +714,42 @@ dn_tag_get(struct mbuf *m) * invocations of the procedures. */ static void -transmit_event(struct dn_pipe *pipe) +transmit_event(struct dn_pipe *pipe, struct mbuf **head, struct mbuf **tail) { struct mbuf *m ; struct dn_pkt_tag *pkt ; - struct ip *ip; - + u_int64_t schedule_time; + lck_mtx_assert(dn_mutex, LCK_MTX_ASSERT_OWNED); - - while ( (m = pipe->head) ) { - pkt = dn_tag_get(m); - if ( !DN_KEY_LEQ(pkt->output_time, curr_time) ) - break; - /* - * first unlink, then call procedures, since ip_input() can invoke - * ip_output() and viceversa, thus causing nested calls - */ - pipe->head = m->m_nextpkt ; - m->m_nextpkt = NULL; - - /* XXX: drop the lock for now to avoid LOR's */ - lck_mtx_unlock(dn_mutex); - switch (pkt->dn_dir) { - case DN_TO_IP_OUT: { - struct route tmp_rt = pkt->ro; - (void)ip_output(m, NULL, NULL, pkt->flags, NULL); - if (tmp_rt.ro_rt) { - rtfree(tmp_rt.ro_rt); - } - break ; - } - case DN_TO_IP_IN : - ip = mtod(m, struct ip *); - ip->ip_len = htons(ip->ip_len); - ip->ip_off = htons(ip->ip_off); - proto_inject(PF_INET, m); - break ; - -#if BRIDGE - case DN_TO_BDG_FWD : - /* - * The bridge requires/assumes the Ethernet header is - * contiguous in the first mbuf header. Insure this is true. - */ - if (BDG_LOADED) { - if (m->m_len < ETHER_HDR_LEN && - (m = m_pullup(m, ETHER_HDR_LEN)) == NULL) { - printf("dummynet/bridge: pullup fail, dropping pkt\n"); - break; - } - m = bdg_forward_ptr(m, pkt->ifp); - } else { - /* somebody unloaded the bridge module. Drop pkt */ - /* XXX rate limit */ - printf("dummynet: dropping bridged packet trapped in pipe\n"); - } - if (m) - m_freem(m); + ASSERT(serialize >= 0); + if (serialize == 0) { + while ((m = pipe->head) != NULL) { + pkt = dn_tag_get(m); + if (!DN_KEY_LEQ(pkt->output_time, curr_time)) break; -#endif - default: - printf("dummynet: bad switch %d!\n", pkt->dn_dir); - m_freem(m); - break ; + + pipe->head = m->m_nextpkt; + if (*tail != NULL) + (*tail)->m_nextpkt = m; + else + *head = m; + *tail = m; } - lck_mtx_lock(dn_mutex); - } - /* if there are leftover packets, put into the heap for next event */ - if ( (m = pipe->head) ) { + + if (*tail != NULL) + (*tail)->m_nextpkt = NULL; + } + + schedule_time = DN_KEY_LEQ(pkt->output_time, curr_time) ? + curr_time+1 : pkt->output_time; + + /* if there are leftover packets, put the pipe into the heap for next ready event */ + if ((m = pipe->head) != NULL) { pkt = dn_tag_get(m); /* XXX should check errors on heap_insert, by draining the * whole pipe p and hoping in the future we are more successful */ - heap_insert(&extract_heap, pkt->output_time, pipe); + heap_insert(&extract_heap, schedule_time, pipe); } } @@ -520,8 +758,15 @@ transmit_event(struct dn_pipe *pipe) * before being able to transmit a packet. The credit is taken from * either a pipe (WF2Q) or a flow_queue (per-flow queueing) */ + +/* hz is 100, which gives a granularity of 10ms in the old timer. + * The timer has been changed to fire every 1ms, so the use of + * hz has been modified here. All instances of hz have been left + * in place but adjusted by a factor of 10 so that hz is functionally + * equal to 1000. + */ #define SET_TICKS(_m, q, p) \ - ((_m)->m_pkthdr.len*8*hz - (q)->numbytes + p->bandwidth - 1 ) / \ + ((_m)->m_pkthdr.len*8*(hz*10) - (q)->numbytes + p->bandwidth - 1 ) / \ p->bandwidth ; /* @@ -556,7 +801,7 @@ move_pkt(struct mbuf *pkt, struct dn_flow_queue *q, * if there are leftover packets reinsert the pkt in the scheduler. */ static void -ready_event(struct dn_flow_queue *q) +ready_event(struct dn_flow_queue *q, struct mbuf **head, struct mbuf **tail) { struct mbuf *pkt; struct dn_pipe *p = q->fs->pipe ; @@ -565,8 +810,8 @@ ready_event(struct dn_flow_queue *q) lck_mtx_assert(dn_mutex, LCK_MTX_ASSERT_OWNED); if (p == NULL) { - printf("dummynet: ready_event- pipe is gone\n"); - return ; + printf("dummynet: ready_event pipe is gone\n"); + return ; } p_was_empty = (p->head == NULL) ; @@ -581,7 +826,7 @@ ready_event(struct dn_flow_queue *q) q->numbytes += ( curr_time - q->sched_time ) * p->bandwidth; while ( (pkt = q->head) != NULL ) { int len = pkt->m_pkthdr.len; - int len_scaled = p->bandwidth ? len*8*hz : 0 ; + int len_scaled = p->bandwidth ? len*8*(hz*10) : 0 ; if (len_scaled > q->numbytes ) break ; q->numbytes -= len_scaled ; @@ -610,7 +855,7 @@ ready_event(struct dn_flow_queue *q) * Otherwise, the scheduler will take care of it. */ if (p_was_empty) - transmit_event(p); + transmit_event(p, head, tail); } /* @@ -622,16 +867,17 @@ ready_event(struct dn_flow_queue *q) * there is an additional delay. */ static void -ready_event_wfq(struct dn_pipe *p) +ready_event_wfq(struct dn_pipe *p, struct mbuf **head, struct mbuf **tail) { int p_was_empty = (p->head == NULL) ; struct dn_heap *sch = &(p->scheduler_heap); struct dn_heap *neh = &(p->not_eligible_heap) ; + int64_t p_numbytes = p->numbytes; lck_mtx_assert(dn_mutex, LCK_MTX_ASSERT_OWNED); if (p->if_name[0] == 0) /* tx clock is simulated */ - p->numbytes += ( curr_time - p->sched_time ) * p->bandwidth; + p_numbytes += ( curr_time - p->sched_time ) * p->bandwidth; else { /* tx clock is for real, the ifq must be empty or this is a NOP */ if (p->ifp && p->ifp->if_snd.ifq_head != NULL) return ; @@ -645,16 +891,16 @@ ready_event_wfq(struct dn_pipe *p) * While we have backlogged traffic AND credit, we need to do * something on the queue. */ - while ( p->numbytes >=0 && (sch->elements>0 || neh->elements >0) ) { + while ( p_numbytes >=0 && (sch->elements>0 || neh->elements >0) ) { if (sch->elements > 0) { /* have some eligible pkts to send out */ struct dn_flow_queue *q = sch->p[0].object ; struct mbuf *pkt = q->head; struct dn_flow_set *fs = q->fs; u_int64_t len = pkt->m_pkthdr.len; - int len_scaled = p->bandwidth ? len*8*hz : 0 ; + int len_scaled = p->bandwidth ? len*8*(hz*10) : 0 ; heap_extract(sch, NULL); /* remove queue from heap */ - p->numbytes -= len_scaled ; + p_numbytes -= len_scaled ; move_pkt(pkt, q, p, len); p->V += (len<sum ; /* update V */ @@ -691,11 +937,11 @@ ready_event_wfq(struct dn_pipe *p) } if (p->if_name[0] != '\0') {/* tx clock is from a real thing */ - p->numbytes = -1 ; /* mark not ready for I/O */ + p_numbytes = -1 ; /* mark not ready for I/O */ break ; } } - if (sch->elements == 0 && neh->elements == 0 && p->numbytes >= 0 + if (sch->elements == 0 && neh->elements == 0 && p_numbytes >= 0 && p->idle_heap.elements > 0) { /* * no traffic and no events scheduled. We can get rid of idle-heap. @@ -717,11 +963,11 @@ ready_event_wfq(struct dn_pipe *p) * If we are under credit, schedule the next ready event. * Also fix the delivery time of the last packet. */ - if (p->if_name[0]==0 && p->numbytes < 0) { /* this implies bandwidth >0 */ + if (p->if_name[0]==0 && p_numbytes < 0) { /* this implies bandwidth >0 */ dn_key t=0 ; /* number of ticks i have to wait */ if (p->bandwidth > 0) - t = ( p->bandwidth -1 - p->numbytes) / p->bandwidth ; + t = ( p->bandwidth -1 - p_numbytes) / p->bandwidth ; dn_tag_get(p->tail)->output_time += t ; p->sched_time = curr_time ; heap_insert(&wfq_ready_heap, curr_time + t, (void *)p); @@ -729,57 +975,78 @@ ready_event_wfq(struct dn_pipe *p) * queue on error hoping next time we are luckier. */ } + + /* Fit (adjust if necessary) 64bit result into 32bit variable. */ + if (p_numbytes > INT_MAX) + p->numbytes = INT_MAX; + else if (p_numbytes < INT_MIN) + p->numbytes = INT_MIN; + else + p->numbytes = p_numbytes; + /* * If the delay line was empty call transmit_event(p) now. * Otherwise, the scheduler will take care of it. */ if (p_was_empty) - transmit_event(p); + transmit_event(p, head, tail); + } /* - * This is called once per tick, or HZ times per second. It is used to + * This is called every 1ms. It is used to * increment the current tick counter and schedule expired events. */ static void -dummynet(void * __unused unused) +dummynet(__unused void * unused) { void *p ; /* generic parameter to handler */ struct dn_heap *h ; struct dn_heap *heaps[3]; + struct mbuf *head = NULL, *tail = NULL; int i; struct dn_pipe *pe ; + struct timespec ts; + struct timeval tv; heaps[0] = &ready_heap ; /* fixed-rate queues */ heaps[1] = &wfq_ready_heap ; /* wfq queues */ heaps[2] = &extract_heap ; /* delay line */ - + lck_mtx_lock(dn_mutex); - curr_time++ ; + /* make all time measurements in milliseconds (ms) - + * here we convert secs and usecs to msecs (just divide the + * usecs and take the closest whole number). + */ + microuptime(&tv); + curr_time = (tv.tv_sec * 1000) + (tv.tv_usec / 1000); + for (i=0; i < 3 ; i++) { h = heaps[i]; while (h->elements > 0 && DN_KEY_LEQ(h->p[0].key, curr_time) ) { - if (h->p[0].key > curr_time) - printf("dummynet: warning, heap %d is %d ticks late\n", - i, (int)(curr_time - h->p[0].key)); - p = h->p[0].object ; /* store a copy before heap_extract */ - heap_extract(h, NULL); /* need to extract before processing */ - if (i == 0) - ready_event(p) ; - else if (i == 1) { - struct dn_pipe *pipe = p; - if (pipe->if_name[0] != '\0') - printf("dummynet: bad ready_event_wfq for pipe %s\n", - pipe->if_name); - else - ready_event_wfq(p) ; - } else - transmit_event(p); + if (h->p[0].key > curr_time) + printf("dummynet: warning, heap %d is %d ticks late\n", + i, (int)(curr_time - h->p[0].key)); + p = h->p[0].object ; /* store a copy before heap_extract */ + heap_extract(h, NULL); /* need to extract before processing */ + if (i == 0) + ready_event(p, &head, &tail) ; + else if (i == 1) { + struct dn_pipe *pipe = p; + if (pipe->if_name[0] != '\0') + printf("dummynet: bad ready_event_wfq for pipe %s\n", + pipe->if_name); + else + ready_event_wfq(p, &head, &tail) ; + } else { + transmit_event(p, &head, &tail); + } } } /* sweep pipes trying to expire idle flow_queues */ - for (pe = all_pipes; pe ; pe = pe->next ) + for (i = 0; i < HASHSIZE; i++) + SLIST_FOREACH(pe, &pipehash[i], next) if (pe->idle_heap.elements > 0 && DN_KEY_LT(pe->idle_heap.p[0].key, pe->V) ) { struct dn_flow_queue *q = pe->idle_heap.p[0].object ; @@ -789,10 +1056,70 @@ dummynet(void * __unused unused) pe->sum -= q->fs->weight ; } + /* check the heaps to see if there's still stuff in there, and + * only set the timer if there are packets to process + */ + timer_enabled = 0; + for (i=0; i < 3 ; i++) { + h = heaps[i]; + if (h->elements > 0) { // set the timer + ts.tv_sec = 0; + ts.tv_nsec = 1 * 1000000; // 1ms + timer_enabled = 1; + bsd_timeout(dummynet, NULL, &ts); + break; + } + } + + if (head != NULL) + serialize++; + lck_mtx_unlock(dn_mutex); + + /* Send out the de-queued list of ready-to-send packets */ + if (head != NULL) { + dummynet_send(head); + lck_mtx_lock(dn_mutex); + serialize--; + lck_mtx_unlock(dn_mutex); + } +} + + +static void +dummynet_send(struct mbuf *m) +{ + struct dn_pkt_tag *pkt; + struct mbuf *n; + + for (; m != NULL; m = n) { + n = m->m_nextpkt; + m->m_nextpkt = NULL; + pkt = dn_tag_get(m); + + switch (pkt->dn_dir) { + case DN_TO_IP_OUT: { + struct route tmp_rt = pkt->ro; + (void)ip_output(m, NULL, &tmp_rt, pkt->flags, NULL, NULL); + if (tmp_rt.ro_rt) { + rtfree(tmp_rt.ro_rt); + tmp_rt.ro_rt = NULL; + } + break ; + } + case DN_TO_IP_IN : + proto_inject(PF_INET, m); + break ; - timeout(dummynet, NULL, 1); + default: + printf("dummynet: bad switch %d!\n", pkt->dn_dir); + m_freem(m); + break ; + } + } } + + /* * called by an interface when tx_rdy occurs. @@ -801,15 +1128,20 @@ int if_tx_rdy(struct ifnet *ifp) { struct dn_pipe *p; - + struct mbuf *head = NULL, *tail = NULL; + int i; + lck_mtx_lock(dn_mutex); - for (p = all_pipes; p ; p = p->next ) - if (p->ifp == ifp) - break ; + + for (i = 0; i < HASHSIZE; i++) + SLIST_FOREACH(p, &pipehash[i], next) + if (p->ifp == ifp) + break ; if (p == NULL) { char buf[32]; - sprintf(buf, "%s%d",ifp->if_name, ifp->if_unit); - for (p = all_pipes; p ; p = p->next ) + snprintf(buf, sizeof(buf), "%s%d",ifp->if_name, ifp->if_unit); + for (i = 0; i < HASHSIZE; i++) + SLIST_FOREACH(p, &pipehash[i], next) if (!strcmp(p->if_name, buf) ) { p->ifp = ifp ; DPRINTF(("dummynet: ++ tx rdy from %s (now found)\n", buf)); @@ -820,10 +1152,21 @@ if_tx_rdy(struct ifnet *ifp) DPRINTF(("dummynet: ++ tx rdy from %s%d - qlen %d\n", ifp->if_name, ifp->if_unit, ifp->if_snd.ifq_len)); p->numbytes = 0 ; /* mark ready for I/O */ - ready_event_wfq(p); + ready_event_wfq(p, &head, &tail); } - lck_mtx_lock(dn_mutex); + + if (head != NULL) { + serialize++; + } + + lck_mtx_unlock(dn_mutex); + + /* Send out the de-queued list of ready-to-send packets */ + if (head != NULL) { + dummynet_send(head); + serialize--; + } return 0; } @@ -838,6 +1181,7 @@ expire_queues(struct dn_flow_set *fs) int i, initial_elements = fs->rq_elements ; struct timeval timenow; + /* reviewed for getmicrotime usage */ getmicrotime(&timenow); if (fs->last_expired == timenow.tv_sec) @@ -1046,7 +1390,7 @@ red_drops(struct dn_flow_set *fs, struct dn_flow_queue *q, int len) if (fs->flags_fs & DN_QSIZE_IS_BYTES) p_b = (p_b * len) / fs->max_pkt_size; if (++q->count == 0) - q->random = random() & 0xffff; + q->random = MY_RANDOM & 0xffff; else { /* * q->count counts packets arrived since last drop, so a greater @@ -1056,7 +1400,7 @@ red_drops(struct dn_flow_set *fs, struct dn_flow_queue *q, int len) q->count = 0; DPRINTF(("dummynet: - red drop")); /* after a drop we calculate a new random value */ - q->random = random() & 0xffff; + q->random = MY_RANDOM & 0xffff; return 1; /* drop */ } } @@ -1066,35 +1410,29 @@ red_drops(struct dn_flow_set *fs, struct dn_flow_queue *q, int len) static __inline struct dn_flow_set * -locate_flowset(int pipe_nr, struct ip_fw *rule) +locate_flowset(int fs_nr) { struct dn_flow_set *fs; - ipfw_insn *cmd = rule->cmd + rule->act_ofs; + SLIST_FOREACH(fs, &flowsethash[HASH(fs_nr)], next) + if (fs->fs_nr == fs_nr) + return fs ; + + return (NULL); +} - if (cmd->opcode == O_LOG) - cmd += F_LEN(cmd); +static __inline struct dn_pipe * +locate_pipe(int pipe_nr) +{ + struct dn_pipe *pipe; - bcopy(& ((ipfw_insn_pipe *)cmd)->pipe_ptr, &fs, sizeof(fs)); + SLIST_FOREACH(pipe, &pipehash[HASH(pipe_nr)], next) + if (pipe->pipe_nr == pipe_nr) + return (pipe); - if (fs != NULL) - return fs; + return (NULL); +} - if (cmd->opcode == O_QUEUE) { - for (fs=all_flow_sets; fs && fs->fs_nr != pipe_nr; fs=fs->next) - ; - } - else { - struct dn_pipe *p1; - for (p1 = all_pipes; p1 && p1->pipe_nr != pipe_nr; p1 = p1->next) - ; - if (p1 != NULL) - fs = &(p1->fs) ; - } - /* record for the future */ - bcopy(&fs, & ((ipfw_insn_pipe *)cmd)->pipe_ptr, sizeof(fs)); - return fs ; -} /* * dummynet hook for packets. Below 'pipe' is a pipe or a queue @@ -1115,13 +1453,16 @@ locate_flowset(int pipe_nr, struct ip_fw *rule) static int dummynet_io(struct mbuf *m, int pipe_nr, int dir, struct ip_fw_args *fwa) { + struct mbuf *head = NULL, *tail = NULL; struct dn_pkt_tag *pkt; struct m_tag *mtag; - struct dn_flow_set *fs; + struct dn_flow_set *fs = NULL; struct dn_pipe *pipe ; u_int64_t len = m->m_pkthdr.len ; struct dn_flow_queue *q = NULL ; int is_pipe; + struct timespec ts; + struct timeval tv; #if IPFW2 ipfw_insn *cmd = fwa->rule->cmd + fwa->rule->act_ofs; @@ -1136,18 +1477,32 @@ dummynet_io(struct mbuf *m, int pipe_nr, int dir, struct ip_fw_args *fwa) pipe_nr &= 0xffff ; lck_mtx_lock(dn_mutex); + + /* make all time measurements in milliseconds (ms) - + * here we convert secs and usecs to msecs (just divide the + * usecs and take the closest whole number). + */ + microuptime(&tv); + curr_time = (tv.tv_sec * 1000) + (tv.tv_usec / 1000); /* * This is a dummynet rule, so we expect an O_PIPE or O_QUEUE rule. */ - fs = locate_flowset(pipe_nr, fwa->rule); - if (fs == NULL) + if (is_pipe) { + pipe = locate_pipe(pipe_nr); + if (pipe != NULL) + fs = &(pipe->fs); + } else + fs = locate_flowset(pipe_nr); + + + if (fs == NULL){ goto dropit ; /* this queue/pipe does not exist! */ + } pipe = fs->pipe ; if (pipe == NULL) { /* must be a queue, try find a matching pipe */ - for (pipe = all_pipes; pipe && pipe->pipe_nr != fs->parent_nr; - pipe = pipe->next) - ; + pipe = locate_pipe(fs->parent_nr); + if (pipe != NULL) fs->pipe = pipe ; else { @@ -1164,7 +1519,7 @@ dummynet_io(struct mbuf *m, int pipe_nr, int dir, struct ip_fw_args *fwa) */ q->tot_bytes += len ; q->tot_pkts++ ; - if ( fs->plr && random() < fs->plr ) + if ( fs->plr && (MY_RANDOM < fs->plr) ) goto dropit ; /* random pkt drop */ if ( fs->flags_fs & DN_QSIZE_IS_BYTES) { if (q->len_bytes > fs->qsize) @@ -1177,13 +1532,14 @@ dummynet_io(struct mbuf *m, int pipe_nr, int dir, struct ip_fw_args *fwa) goto dropit ; /* XXX expensive to zero, see if we can remove it*/ - mtag = m_tag_alloc(KERNEL_MODULE_TAG_ID, KERNEL_TAG_TYPE_DUMMYNET, - sizeof(struct dn_pkt_tag), M_NOWAIT|M_ZERO); + mtag = m_tag_create(KERNEL_MODULE_TAG_ID, KERNEL_TAG_TYPE_DUMMYNET, + sizeof(struct dn_pkt_tag), M_NOWAIT, m); if ( mtag == NULL ) goto dropit ; /* cannot allocate packet header */ m_tag_prepend(m, mtag); /* attach to mbuf chain */ pkt = (struct dn_pkt_tag *)(mtag+1); + bzero(pkt, sizeof(struct dn_pkt_tag)); /* ok, i can handle the pkt now... */ /* build and enqueue packet + parameters */ pkt->rule = fwa->rule ; @@ -1196,16 +1552,17 @@ dummynet_io(struct mbuf *m, int pipe_nr, int dir, struct ip_fw_args *fwa) * the caller passed a pointer into the stack; dst might also be * a pointer into *ro so it needs to be updated. */ - lck_mtx_lock(rt_mtx); pkt->ro = *(fwa->ro); if (fwa->ro->ro_rt) - fwa->ro->ro_rt->rt_refcnt++ ; + RT_ADDREF(fwa->ro->ro_rt); + if (fwa->dst == (struct sockaddr_in *)&fwa->ro->ro_dst) /* dst points into ro */ fwa->dst = (struct sockaddr_in *)&(pkt->ro.ro_dst) ; - lck_mtx_unlock(rt_mtx); - - pkt->dn_dst = fwa->dst; + + bcopy (fwa->dst, &pkt->dn_dst, sizeof(pkt->dn_dst)); pkt->flags = fwa->flags; + if (fwa->ipoa != NULL) + pkt->ipoa = *(fwa->ipoa); } if (q->head == NULL) q->head = m; @@ -1230,8 +1587,8 @@ dummynet_io(struct mbuf *m, int pipe_nr, int dir, struct ip_fw_args *fwa) if (pipe->bandwidth) t = SET_TICKS(m, q, pipe); q->sched_time = curr_time ; - if (t == 0) /* must process it now */ - ready_event( q ); + if (t == 0) /* must process it now */ + ready_event( q , &head, &tail ); else heap_insert(&ready_heap, curr_time + t , q ); } else { @@ -1282,12 +1639,24 @@ dummynet_io(struct mbuf *m, int pipe_nr, int dir, struct ip_fw_args *fwa) DPRINTF(("dummynet: waking up pipe %d at %d\n", pipe->pipe_nr, (int)(q->F >> MY_M))); pipe->sched_time = curr_time ; - ready_event_wfq(pipe); + ready_event_wfq(pipe, &head, &tail); } } } done: + /* start the timer and set global if not already set */ + if (!timer_enabled) { + ts.tv_sec = 0; + ts.tv_nsec = 1 * 1000000; // 1ms + timer_enabled = 1; + bsd_timeout(dummynet, NULL, &ts); + } + lck_mtx_unlock(dn_mutex); + + if (head != NULL) + dummynet_send(head); + return 0; dropit: @@ -1302,15 +1671,17 @@ dropit: * Below, the rtfree is only needed when (pkt->dn_dir == DN_TO_IP_OUT) * Doing this would probably save us the initial bzero of dn_pkt */ -#define DN_FREE_PKT(_m) do { \ +#define DN_FREE_PKT(_m) do { \ struct m_tag *tag = m_tag_locate(m, KERNEL_MODULE_TAG_ID, KERNEL_TAG_TYPE_DUMMYNET, NULL); \ - if (tag) { \ + if (tag) { \ struct dn_pkt_tag *n = (struct dn_pkt_tag *)(tag+1); \ - if (n->ro.ro_rt) \ - rtfree(n->ro.ro_rt); \ - } \ - m_tag_delete(_m, tag); \ - m_freem(_m); \ + if (n->ro.ro_rt != NULL) { \ + rtfree(n->ro.ro_rt); \ + n->ro.ro_rt = NULL; \ + } \ + } \ + m_tag_delete(_m, tag); \ + m_freem(_m); \ } while (0) /* @@ -1382,40 +1753,38 @@ purge_pipe(struct dn_pipe *pipe) * remove references from all ipfw rules to all pipes. */ static void -dummynet_flush() +dummynet_flush(void) { - struct dn_pipe *curr_p, *p ; - struct dn_flow_set *fs, *curr_fs; + struct dn_pipe *pipe, *pipe1; + struct dn_flow_set *fs, *fs1; + int i; lck_mtx_lock(dn_mutex); /* remove all references to pipes ...*/ flush_pipe_ptrs(NULL); - /* prevent future matches... */ - p = all_pipes ; - all_pipes = NULL ; - fs = all_flow_sets ; - all_flow_sets = NULL ; - /* and free heaps so we don't have unwanted events */ - heap_free(&ready_heap); - heap_free(&wfq_ready_heap); - heap_free(&extract_heap); + + /* Free heaps so we don't have unwanted events. */ + heap_free(&ready_heap); + heap_free(&wfq_ready_heap); + heap_free(&extract_heap); - /* - * Now purge all queued pkts and delete all pipes - */ - /* scan and purge all flow_sets. */ - for ( ; fs ; ) { - curr_fs = fs ; - fs = fs->next ; - purge_flow_set(curr_fs, 1); - } - for ( ; p ; ) { - purge_pipe(p); - curr_p = p ; - p = p->next ; - FREE(curr_p, M_DUMMYNET); - } + /* + * Now purge all queued pkts and delete all pipes. + * + * XXXGL: can we merge the for(;;) cycles into one or not? + */ + for (i = 0; i < HASHSIZE; i++) + SLIST_FOREACH_SAFE(fs, &flowsethash[i], next, fs1) { + SLIST_REMOVE(&flowsethash[i], fs, dn_flow_set, next); + purge_flow_set(fs, 1); + } + for (i = 0; i < HASHSIZE; i++) + SLIST_FOREACH_SAFE(pipe, &pipehash[i], next, pipe1) { + SLIST_REMOVE(&pipehash[i], pipe, dn_pipe, next); + purge_pipe(pipe); + FREE(pipe, M_DUMMYNET); + } lck_mtx_unlock(dn_mutex); } @@ -1447,6 +1816,7 @@ dn_rule_delete(void *r) struct dn_flow_set *fs ; struct dn_pkt_tag *pkt ; struct mbuf *m ; + int i; lck_mtx_lock(dn_mutex); @@ -1455,18 +1825,21 @@ dn_rule_delete(void *r) * the flow set, otherwise scan pipes. Should do either, but doing * both does not harm. */ - for ( fs = all_flow_sets ; fs ; fs = fs->next ) - dn_rule_delete_fs(fs, r); - for ( p = all_pipes ; p ; p = p->next ) { - fs = &(p->fs) ; - dn_rule_delete_fs(fs, r); - for (m = p->head ; m ; m = m->m_nextpkt ) { - pkt = dn_tag_get(m) ; - if (pkt->rule == r) - pkt->rule = ip_fw_default_rule ; + for (i = 0; i < HASHSIZE; i++) + SLIST_FOREACH(fs, &flowsethash[i], next) + dn_rule_delete_fs(fs, r); + + for (i = 0; i < HASHSIZE; i++) + SLIST_FOREACH(p, &pipehash[i], next) { + fs = &(p->fs); + dn_rule_delete_fs(fs, r); + for (m = p->head ; m ; m = m->m_nextpkt ) { + pkt = dn_tag_get(m); + if (pkt->rule == r) + pkt->rule = ip_fw_default_rule; + } } - } - lck_mtx_unlock(dn_mutex); + lck_mtx_unlock(dn_mutex); } /* @@ -1560,9 +1933,9 @@ set_fs_parms(struct dn_flow_set *x, struct dn_flow_set *src) x->qsize = 1024*1024 ; } else { if (x->qsize == 0) - x->qsize = 50 ; + x->qsize = 50; if (x->qsize > 100) - x->qsize = 50 ; + x->qsize = 50; } /* configuring RED */ if ( x->flags_fs & DN_IS_RED ) @@ -1586,20 +1959,20 @@ config_pipe(struct dn_pipe *p) * delay = ms, must be translated into ticks. * qsize = slots/bytes */ - p->delay = ( p->delay * hz ) / 1000 ; + p->delay = ( p->delay * (hz*10) ) / 1000 ; /* We need either a pipe number or a flow_set number */ if (p->pipe_nr == 0 && pfs->fs_nr == 0) return EINVAL ; if (p->pipe_nr != 0 && pfs->fs_nr != 0) return EINVAL ; if (p->pipe_nr != 0) { /* this is a pipe */ - struct dn_pipe *x, *a, *b; + struct dn_pipe *x, *b; lck_mtx_lock(dn_mutex); -/* locate pipe */ - for (a = NULL , b = all_pipes ; b && b->pipe_nr < p->pipe_nr ; - a = b , b = b->next) ; + /* locate pipe */ + b = locate_pipe(p->pipe_nr); + if (b == NULL || b->pipe_nr != p->pipe_nr) { /* new pipe */ x = _MALLOC(sizeof(struct dn_pipe), M_DUMMYNET, M_DONTWAIT | M_ZERO) ; if (x == NULL) { @@ -1612,7 +1985,7 @@ config_pipe(struct dn_pipe *p) /* idle_heap is the only one from which we extract from the middle. */ x->idle_heap.size = x->idle_heap.elements = 0 ; - x->idle_heap.offset=OFFSET_OF(struct dn_flow_queue, heap_pos); + x->idle_heap.offset=offsetof(struct dn_flow_queue, heap_pos); } else { x = b; /* Flush accumulated credit for all queues */ @@ -1636,20 +2009,16 @@ config_pipe(struct dn_pipe *p) FREE(x, M_DUMMYNET); return r ; } - x->next = b ; - if (a == NULL) - all_pipes = x ; - else - a->next = x ; + SLIST_INSERT_HEAD(&pipehash[HASH(x->pipe_nr)], + x, next); } lck_mtx_unlock(dn_mutex); } else { /* config queue */ - struct dn_flow_set *x, *a, *b ; + struct dn_flow_set *x, *b ; lck_mtx_lock(dn_mutex); /* locate flow_set */ - for (a=NULL, b=all_flow_sets ; b && b->fs_nr < pfs->fs_nr ; - a = b , b = b->next) ; + b = locate_flowset(pfs->fs_nr); if (b == NULL || b->fs_nr != pfs->fs_nr) { /* new */ if (pfs->parent_nr == 0) { /* need link to a pipe */ @@ -1686,11 +2055,8 @@ config_pipe(struct dn_pipe *p) FREE(x, M_DUMMYNET); return r ; } - x->next = b; - if (a == NULL) - all_flow_sets = x; - else - a->next = x; + SLIST_INSERT_HEAD(&flowsethash[HASH(x->fs_nr)], + x, next); } lck_mtx_unlock(dn_mutex); } @@ -1739,11 +2105,12 @@ pipe_remove_from_heap(struct dn_heap *h, struct dn_pipe *p) * drain all queues. Called in case of severe mbuf shortage. */ void -dummynet_drain() +dummynet_drain(void) { struct dn_flow_set *fs; struct dn_pipe *p; struct mbuf *m, *mnext; + int i; lck_mtx_assert(dn_mutex, LCK_MTX_ASSERT_OWNED); @@ -1751,11 +2118,13 @@ dummynet_drain() heap_free(&wfq_ready_heap); heap_free(&extract_heap); /* remove all references to this pipe from flow_sets */ - for (fs = all_flow_sets; fs; fs= fs->next ) - purge_flow_set(fs, 0); + for (i = 0; i < HASHSIZE; i++) + SLIST_FOREACH(fs, &flowsethash[i], next) + purge_flow_set(fs, 0); - for (p = all_pipes; p; p= p->next ) { - purge_flow_set(&(p->fs), 0); + for (i = 0; i < HASHSIZE; i++) + SLIST_FOREACH(p, &pipehash[i], next) { + purge_flow_set(&(p->fs), 0); mnext = p->head; while ((m = mnext) != NULL) { @@ -1777,35 +2146,35 @@ delete_pipe(struct dn_pipe *p) if (p->pipe_nr != 0 && p->fs.fs_nr != 0) return EINVAL ; if (p->pipe_nr != 0) { /* this is an old-style pipe */ - struct dn_pipe *a, *b; + struct dn_pipe *b; struct dn_flow_set *fs; + int i; lck_mtx_lock(dn_mutex); /* locate pipe */ - for (a = NULL , b = all_pipes ; b && b->pipe_nr < p->pipe_nr ; - a = b , b = b->next) ; - if (b == NULL || (b->pipe_nr != p->pipe_nr) ) { + b = locate_pipe(p->pipe_nr); + if(b == NULL){ lck_mtx_unlock(dn_mutex); return EINVAL ; /* not found */ } - /* unlink from list of pipes */ - if (a == NULL) - all_pipes = b->next ; - else - a->next = b->next ; + /* Unlink from list of pipes. */ + SLIST_REMOVE(&pipehash[HASH(b->pipe_nr)], b, dn_pipe, next); + /* remove references to this pipe from the ip_fw rules. */ flush_pipe_ptrs(&(b->fs)); - /* remove all references to this pipe from flow_sets */ - for (fs = all_flow_sets; fs; fs= fs->next ) - if (fs->pipe == b) { - printf("dummynet: ++ ref to pipe %d from fs %d\n", - p->pipe_nr, fs->fs_nr); - fs->pipe = NULL ; - purge_flow_set(fs, 0); - } + /* Remove all references to this pipe from flow_sets. */ + for (i = 0; i < HASHSIZE; i++) + SLIST_FOREACH(fs, &flowsethash[i], next) + if (fs->pipe == b) { + printf("dummynet: ++ ref to pipe %d from fs %d\n", + p->pipe_nr, fs->fs_nr); + fs->pipe = NULL ; + purge_flow_set(fs, 0); + } fs_remove_from_heap(&ready_heap, &(b->fs)); + purge_pipe(b); /* remove all data associated to this pipe */ /* remove reference to here from extract_heap and wfq_ready_heap */ pipe_remove_from_heap(&extract_heap, b); @@ -1814,24 +2183,22 @@ delete_pipe(struct dn_pipe *p) FREE(b, M_DUMMYNET); } else { /* this is a WF2Q queue (dn_flow_set) */ - struct dn_flow_set *a, *b; + struct dn_flow_set *b; lck_mtx_lock(dn_mutex); /* locate set */ - for (a = NULL, b = all_flow_sets ; b && b->fs_nr < p->fs.fs_nr ; - a = b , b = b->next) ; - if (b == NULL || (b->fs_nr != p->fs.fs_nr) ) { + b = locate_flowset(p->fs.fs_nr); + if (b == NULL) { lck_mtx_unlock(dn_mutex); return EINVAL ; /* not found */ } - if (a == NULL) - all_flow_sets = b->next ; - else - a->next = b->next ; /* remove references to this flow_set from the ip_fw rules. */ flush_pipe_ptrs(b); + /* Unlink from list of flowsets. */ + SLIST_REMOVE( &flowsethash[HASH(b->fs_nr)], b, dn_flow_set, next); + if (b->pipe != NULL) { /* Update total weight on parent pipe and cleanup parent heaps */ b->pipe->sum -= b->weight * b->backlogged ; @@ -1850,64 +2217,112 @@ delete_pipe(struct dn_pipe *p) /* * helper function used to copy data from kernel in DUMMYNET_GET */ -static char * -dn_copy_set(struct dn_flow_set *set, char *bp) +static +char* dn_copy_set_32(struct dn_flow_set *set, char *bp) { int i, copied = 0 ; - struct dn_flow_queue *q, *qp = (struct dn_flow_queue *)bp; - + struct dn_flow_queue *q; + struct dn_flow_queue_32 *qp = (struct dn_flow_queue_32 *)bp; + lck_mtx_assert(dn_mutex, LCK_MTX_ASSERT_OWNED); + + for (i = 0 ; i <= set->rq_size ; i++) + for (q = set->rq[i] ; q ; q = q->next, qp++ ) { + if (q->hash_slot != i) + printf("dummynet: ++ at %d: wrong slot (have %d, " + "should be %d)\n", copied, q->hash_slot, i); + if (q->fs != set) + printf("dummynet: ++ at %d: wrong fs ptr (have %p, should be %p)\n", + i, q->fs, set); + copied++ ; + cp_queue_to_32_user( q, qp ); + /* cleanup pointers */ + qp->next = (user32_addr_t)0 ; + qp->head = qp->tail = (user32_addr_t)0 ; + qp->fs = (user32_addr_t)0 ; + } + if (copied != set->rq_elements) + printf("dummynet: ++ wrong count, have %d should be %d\n", + copied, set->rq_elements); + return (char *)qp ; +} +static +char* dn_copy_set_64(struct dn_flow_set *set, char *bp) +{ + int i, copied = 0 ; + struct dn_flow_queue *q; + struct dn_flow_queue_64 *qp = (struct dn_flow_queue_64 *)bp; + + lck_mtx_assert(dn_mutex, LCK_MTX_ASSERT_OWNED); + for (i = 0 ; i <= set->rq_size ; i++) - for (q = set->rq[i] ; q ; q = q->next, qp++ ) { - if (q->hash_slot != i) - printf("dummynet: ++ at %d: wrong slot (have %d, " - "should be %d)\n", copied, q->hash_slot, i); - if (q->fs != set) - printf("dummynet: ++ at %d: wrong fs ptr (have %p, should be %p)\n", - i, q->fs, set); - copied++ ; - bcopy(q, qp, sizeof( *q ) ); - /* cleanup pointers */ - qp->next = NULL ; - qp->head = qp->tail = NULL ; - qp->fs = NULL ; - } + for (q = set->rq[i] ; q ; q = q->next, qp++ ) { + if (q->hash_slot != i) + printf("dummynet: ++ at %d: wrong slot (have %d, " + "should be %d)\n", copied, q->hash_slot, i); + if (q->fs != set) + printf("dummynet: ++ at %d: wrong fs ptr (have %p, should be %p)\n", + i, q->fs, set); + copied++ ; + //bcopy(q, qp, sizeof(*q)); + cp_queue_to_64_user( q, qp ); + /* cleanup pointers */ + qp->next = USER_ADDR_NULL ; + qp->head = qp->tail = USER_ADDR_NULL ; + qp->fs = USER_ADDR_NULL ; + } if (copied != set->rq_elements) - printf("dummynet: ++ wrong count, have %d should be %d\n", - copied, set->rq_elements); + printf("dummynet: ++ wrong count, have %d should be %d\n", + copied, set->rq_elements); return (char *)qp ; } static size_t -dn_calc_size(void) +dn_calc_size(int is64user) { struct dn_flow_set *set ; struct dn_pipe *p ; - size_t size ; + size_t size = 0 ; + size_t pipesize; + size_t queuesize; + size_t setsize; + int i; lck_mtx_assert(dn_mutex, LCK_MTX_ASSERT_OWNED); - + if ( is64user ){ + pipesize = sizeof(struct dn_pipe_64); + queuesize = sizeof(struct dn_flow_queue_64); + setsize = sizeof(struct dn_flow_set_64); + } + else { + pipesize = sizeof(struct dn_pipe_32); + queuesize = sizeof( struct dn_flow_queue_32 ); + setsize = sizeof(struct dn_flow_set_32); + } /* * compute size of data structures: list of pipes and flow_sets. */ - for (p = all_pipes, size = 0 ; p ; p = p->next ) - size += sizeof( *p ) + - p->fs.rq_elements * sizeof(struct dn_flow_queue); - for (set = all_flow_sets ; set ; set = set->next ) - size += sizeof ( *set ) + - set->rq_elements * sizeof(struct dn_flow_queue); - return size ; + for (i = 0; i < HASHSIZE; i++) { + SLIST_FOREACH(p, &pipehash[i], next) + size += sizeof(*p) + + p->fs.rq_elements * sizeof(struct dn_flow_queue); + SLIST_FOREACH(set, &flowsethash[i], next) + size += sizeof (*set) + + set->rq_elements * sizeof(struct dn_flow_queue); + } + return size; } static int dummynet_get(struct sockopt *sopt) { - char *buf, *bp ; /* bp is the "copy-pointer" */ + char *buf, *bp=NULL; /* bp is the "copy-pointer" */ size_t size ; struct dn_flow_set *set ; struct dn_pipe *p ; int error=0, i ; + int is64user = 0; /* XXX lock held too long */ lck_mtx_lock(dn_mutex); @@ -1915,12 +2330,16 @@ dummynet_get(struct sockopt *sopt) * XXX: Ugly, but we need to allocate memory with M_WAITOK flag and we * cannot use this flag while holding a mutex. */ + if (proc_is64bit(sopt->sopt_p)) + is64user = 1; for (i = 0; i < 10; i++) { - size = dn_calc_size(); + size = dn_calc_size(is64user); lck_mtx_unlock(dn_mutex); buf = _MALLOC(size, M_TEMP, M_WAITOK); + if (buf == NULL) + return ENOBUFS; lck_mtx_lock(dn_mutex); - if (size == dn_calc_size()) + if (size == dn_calc_size(is64user)) break; FREE(buf, M_TEMP); buf = NULL; @@ -1929,41 +2348,33 @@ dummynet_get(struct sockopt *sopt) lck_mtx_unlock(dn_mutex); return ENOBUFS ; } - for (p = all_pipes, bp = buf ; p ; p = p->next ) { - struct dn_pipe *pipe_bp = (struct dn_pipe *)bp ; - /* - * copy pipe descriptor into *bp, convert delay back to ms, - * then copy the flow_set descriptor(s) one at a time. - * After each flow_set, copy the queue descriptor it owns. - */ - bcopy(p, bp, sizeof( *p ) ); - pipe_bp->delay = (pipe_bp->delay * 1000) / hz ; - /* - * XXX the following is a hack based on ->next being the - * first field in dn_pipe and dn_flow_set. The correct - * solution would be to move the dn_flow_set to the beginning - * of struct dn_pipe. - */ - pipe_bp->next = (struct dn_pipe *)DN_IS_PIPE ; - /* clean pointers */ - pipe_bp->head = pipe_bp->tail = NULL ; - pipe_bp->fs.next = NULL ; - pipe_bp->fs.pipe = NULL ; - pipe_bp->fs.rq = NULL ; - bp += sizeof( *p ) ; - bp = dn_copy_set( &(p->fs), bp ); + bp = buf; + for (i = 0; i < HASHSIZE; i++) + SLIST_FOREACH(p, &pipehash[i], next) { + /* + * copy pipe descriptor into *bp, convert delay back to ms, + * then copy the flow_set descriptor(s) one at a time. + * After each flow_set, copy the queue descriptor it owns. + */ + if ( is64user ){ + bp = cp_pipe_to_64_user(p, (struct dn_pipe_64 *)bp); + } + else{ + bp = cp_pipe_to_32_user(p, (struct dn_pipe_32 *)bp); + } } - for (set = all_flow_sets ; set ; set = set->next ) { - struct dn_flow_set *fs_bp = (struct dn_flow_set *)bp ; - bcopy(set, bp, sizeof( *set ) ); - /* XXX same hack as above */ - fs_bp->next = (struct dn_flow_set *)DN_IS_QUEUE ; - fs_bp->pipe = NULL ; - fs_bp->rq = NULL ; - bp += sizeof( *set ) ; - bp = dn_copy_set( set, bp ); + for (i = 0; i < HASHSIZE; i++) + SLIST_FOREACH(set, &flowsethash[i], next) { + struct dn_flow_set_64 *fs_bp = (struct dn_flow_set_64 *)bp ; + cp_flow_set_to_64_user(set, fs_bp); + /* XXX same hack as above */ + fs_bp->next = CAST_DOWN(user64_addr_t, DN_IS_QUEUE); + fs_bp->pipe = USER_ADDR_NULL; + fs_bp->rq = USER_ADDR_NULL ; + bp += sizeof(struct dn_flow_set_64); + bp = dn_copy_set_64( set, bp ); } lck_mtx_unlock(dn_mutex); @@ -2000,7 +2411,11 @@ ip_dn_ctl(struct sockopt *sopt) case IP_DUMMYNET_CONFIGURE : p = &tmp_pipe ; - error = sooptcopyin(sopt, p, sizeof *p, sizeof *p); + if (proc_is64bit(sopt->sopt_p)) + error = cp_pipe_from_user_64( sopt, p ); + else + error = cp_pipe_from_user_32( sopt, p ); + if (error) break ; error = config_pipe(p); @@ -2008,7 +2423,10 @@ ip_dn_ctl(struct sockopt *sopt) case IP_DUMMYNET_DEL : /* remove a pipe or queue */ p = &tmp_pipe ; - error = sooptcopyin(sopt, p, sizeof *p, sizeof *p); + if (proc_is64bit(sopt->sopt_p)) + error = cp_pipe_from_user_64( sopt, p ); + else + error = cp_pipe_from_user_32( sopt, p ); if (error) break ; @@ -2025,16 +2443,13 @@ ip_dn_init(void) dn_mutex_grp_attr = lck_grp_attr_alloc_init(); dn_mutex_grp = lck_grp_alloc_init("dn", dn_mutex_grp_attr); dn_mutex_attr = lck_attr_alloc_init(); - lck_attr_setdefault(dn_mutex_attr); if ((dn_mutex = lck_mtx_alloc_init(dn_mutex_grp, dn_mutex_attr)) == NULL) { printf("ip_dn_init: can't alloc dn_mutex\n"); return; } - all_pipes = NULL ; - all_flow_sets = NULL ; - ready_heap.size = ready_heap.elements = 0 ; + ready_heap.size = ready_heap.elements = 0 ; ready_heap.offset = 0 ; wfq_ready_heap.size = wfq_ready_heap.elements = 0 ; @@ -2045,6 +2460,4 @@ ip_dn_init(void) ip_dn_ctl_ptr = ip_dn_ctl; ip_dn_io_ptr = dummynet_io; ip_dn_ruledel_ptr = dn_rule_delete; - - timeout(dummynet, NULL, 1); }