2009-01-27 11:06:59 +00:00
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/*
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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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* dummynet support
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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2009-02-01 16:00:49 +00:00
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#include <sys/queue.h>
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/* XXX there are several sysctl leftover here */
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2009-01-27 11:06:59 +00:00
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#include <sys/sysctl.h>
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#include "ipfw2.h"
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#include <ctype.h>
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#include <err.h>
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2009-06-24 22:57:07 +00:00
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#include <errno.h>
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#include <libutil.h>
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2009-01-27 11:06:59 +00:00
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#include <netdb.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 <net/if.h>
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#include <netinet/in.h>
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#include <netinet/ip_fw.h>
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#include <netinet/ip_dummynet.h>
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2009-02-01 16:00:49 +00:00
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#include <arpa/inet.h> /* inet_ntoa */
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2009-01-27 11:06:59 +00:00
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static struct _s_x dummynet_params[] = {
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{ "plr", TOK_PLR },
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{ "noerror", TOK_NOERROR },
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{ "buckets", TOK_BUCKETS },
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{ "dst-ip", TOK_DSTIP },
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{ "src-ip", TOK_SRCIP },
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{ "dst-port", TOK_DSTPORT },
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{ "src-port", TOK_SRCPORT },
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{ "proto", TOK_PROTO },
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{ "weight", TOK_WEIGHT },
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{ "all", TOK_ALL },
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{ "mask", TOK_MASK },
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{ "droptail", TOK_DROPTAIL },
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{ "red", TOK_RED },
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{ "gred", TOK_GRED },
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{ "bw", TOK_BW },
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{ "bandwidth", TOK_BW },
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{ "delay", TOK_DELAY },
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{ "pipe", TOK_PIPE },
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{ "queue", TOK_QUEUE },
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{ "flow-id", TOK_FLOWID},
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{ "dst-ipv6", TOK_DSTIP6},
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{ "dst-ip6", TOK_DSTIP6},
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{ "src-ipv6", TOK_SRCIP6},
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{ "src-ip6", TOK_SRCIP6},
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2009-04-09 12:46:00 +00:00
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{ "profile", TOK_PIPE_PROFILE},
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2009-06-24 22:57:07 +00:00
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{ "burst", TOK_BURST},
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2009-01-27 11:06:59 +00:00
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{ "dummynet-params", TOK_NULL },
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{ NULL, 0 } /* terminator */
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};
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static int
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2009-12-03 12:23:48 +00:00
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sort_q(void *arg, const void *pa, const void *pb)
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2009-01-27 11:06:59 +00:00
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{
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int rev = (co.do_sort < 0);
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int field = rev ? -co.do_sort : co.do_sort;
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long long res = 0;
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const struct dn_flow_queue *a = pa;
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const struct dn_flow_queue *b = pb;
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switch (field) {
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case 1: /* pkts */
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res = a->len - b->len;
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break;
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case 2: /* bytes */
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res = a->len_bytes - b->len_bytes;
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break;
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case 3: /* tot pkts */
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res = a->tot_pkts - b->tot_pkts;
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break;
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case 4: /* tot bytes */
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res = a->tot_bytes - b->tot_bytes;
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break;
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}
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if (res < 0)
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res = -1;
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if (res > 0)
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res = 1;
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return (int)(rev ? res : -res);
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}
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static void
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list_queues(struct dn_flow_set *fs, struct dn_flow_queue *q)
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{
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int l;
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int index_printed, indexes = 0;
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char buff[255];
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struct protoent *pe;
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if (fs->rq_elements == 0)
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return;
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if (co.do_sort != 0)
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2009-12-03 12:23:48 +00:00
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qsort_r(q, fs->rq_elements, sizeof *q, NULL, sort_q);
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2009-01-27 11:06:59 +00:00
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/* Print IPv4 flows */
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index_printed = 0;
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for (l = 0; l < fs->rq_elements; l++) {
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struct in_addr ina;
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/* XXX: Should check for IPv4 flows */
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if (IS_IP6_FLOW_ID(&(q[l].id)))
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continue;
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if (!index_printed) {
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index_printed = 1;
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if (indexes > 0) /* currently a no-op */
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printf("\n");
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indexes++;
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printf(" "
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"mask: 0x%02x 0x%08x/0x%04x -> 0x%08x/0x%04x\n",
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fs->flow_mask.proto,
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fs->flow_mask.src_ip, fs->flow_mask.src_port,
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fs->flow_mask.dst_ip, fs->flow_mask.dst_port);
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printf("BKT Prot ___Source IP/port____ "
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"____Dest. IP/port____ "
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"Tot_pkt/bytes Pkt/Byte Drp\n");
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}
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printf("%3d ", q[l].hash_slot);
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pe = getprotobynumber(q[l].id.proto);
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if (pe)
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printf("%-4s ", pe->p_name);
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else
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printf("%4u ", q[l].id.proto);
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ina.s_addr = htonl(q[l].id.src_ip);
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printf("%15s/%-5d ",
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inet_ntoa(ina), q[l].id.src_port);
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ina.s_addr = htonl(q[l].id.dst_ip);
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printf("%15s/%-5d ",
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inet_ntoa(ina), q[l].id.dst_port);
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2009-01-27 20:26:45 +00:00
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printf("%4llu %8llu %2u %4u %3u\n",
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align_uint64(&q[l].tot_pkts),
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align_uint64(&q[l].tot_bytes),
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2009-01-27 11:06:59 +00:00
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q[l].len, q[l].len_bytes, q[l].drops);
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if (co.verbose)
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2009-01-27 20:26:45 +00:00
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printf(" S %20llu F %20llu\n",
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align_uint64(&q[l].S), align_uint64(&q[l].F));
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2009-01-27 11:06:59 +00:00
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}
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/* Print IPv6 flows */
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index_printed = 0;
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for (l = 0; l < fs->rq_elements; l++) {
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if (!IS_IP6_FLOW_ID(&(q[l].id)))
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continue;
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if (!index_printed) {
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index_printed = 1;
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if (indexes > 0)
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printf("\n");
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indexes++;
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printf("\n mask: proto: 0x%02x, flow_id: 0x%08x, ",
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fs->flow_mask.proto, fs->flow_mask.flow_id6);
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inet_ntop(AF_INET6, &(fs->flow_mask.src_ip6),
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buff, sizeof(buff));
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printf("%s/0x%04x -> ", buff, fs->flow_mask.src_port);
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inet_ntop( AF_INET6, &(fs->flow_mask.dst_ip6),
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buff, sizeof(buff) );
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printf("%s/0x%04x\n", buff, fs->flow_mask.dst_port);
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printf("BKT ___Prot___ _flow-id_ "
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"______________Source IPv6/port_______________ "
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"_______________Dest. IPv6/port_______________ "
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"Tot_pkt/bytes Pkt/Byte Drp\n");
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}
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printf("%3d ", q[l].hash_slot);
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pe = getprotobynumber(q[l].id.proto);
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if (pe != NULL)
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printf("%9s ", pe->p_name);
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else
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printf("%9u ", q[l].id.proto);
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printf("%7d %39s/%-5d ", q[l].id.flow_id6,
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inet_ntop(AF_INET6, &(q[l].id.src_ip6), buff, sizeof(buff)),
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q[l].id.src_port);
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printf(" %39s/%-5d ",
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inet_ntop(AF_INET6, &(q[l].id.dst_ip6), buff, sizeof(buff)),
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q[l].id.dst_port);
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2009-01-27 20:26:45 +00:00
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printf(" %4llu %8llu %2u %4u %3u\n",
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align_uint64(&q[l].tot_pkts),
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align_uint64(&q[l].tot_bytes),
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2009-01-27 11:06:59 +00:00
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q[l].len, q[l].len_bytes, q[l].drops);
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if (co.verbose)
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2009-01-27 20:26:45 +00:00
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printf(" S %20llu F %20llu\n",
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align_uint64(&q[l].S),
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align_uint64(&q[l].F));
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2009-01-27 11:06:59 +00:00
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}
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}
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static void
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print_flowset_parms(struct dn_flow_set *fs, char *prefix)
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{
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int l;
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char qs[30];
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char plr[30];
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char red[90]; /* Display RED parameters */
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l = fs->qsize;
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if (fs->flags_fs & DN_QSIZE_IS_BYTES) {
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if (l >= 8192)
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sprintf(qs, "%d KB", l / 1024);
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else
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sprintf(qs, "%d B", l);
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} else
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sprintf(qs, "%3d sl.", l);
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if (fs->plr)
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sprintf(plr, "plr %f", 1.0 * fs->plr / (double)(0x7fffffff));
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else
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plr[0] = '\0';
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if (fs->flags_fs & DN_IS_RED) /* RED parameters */
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sprintf(red,
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2009-06-24 22:57:07 +00:00
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"\n\t %cRED w_q %f min_th %d max_th %d max_p %f",
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2009-01-27 11:06:59 +00:00
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(fs->flags_fs & DN_IS_GENTLE_RED) ? 'G' : ' ',
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1.0 * fs->w_q / (double)(1 << SCALE_RED),
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SCALE_VAL(fs->min_th),
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SCALE_VAL(fs->max_th),
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1.0 * fs->max_p / (double)(1 << SCALE_RED));
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else
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sprintf(red, "droptail");
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printf("%s %s%s %d queues (%d buckets) %s\n",
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prefix, qs, plr, fs->rq_elements, fs->rq_size, red);
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}
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2009-04-09 12:46:00 +00:00
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static void
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2009-06-24 22:57:07 +00:00
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print_extra_delay_parms(struct dn_pipe *p)
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2009-04-09 12:46:00 +00:00
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{
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double loss;
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if (p->samples_no <= 0)
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return;
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loss = p->loss_level;
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loss /= p->samples_no;
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2009-06-24 22:57:07 +00:00
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printf("\t profile: name \"%s\" loss %f samples %d\n",
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p->name, loss, p->samples_no);
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2009-04-09 12:46:00 +00:00
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}
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2009-01-27 11:06:59 +00:00
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void
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ipfw_list_pipes(void *data, uint nbytes, int ac, char *av[])
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{
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int rulenum;
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void *next = data;
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struct dn_pipe *p = (struct dn_pipe *) data;
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struct dn_flow_set *fs;
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struct dn_flow_queue *q;
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int l;
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if (ac > 0)
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rulenum = strtoul(*av++, NULL, 10);
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else
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rulenum = 0;
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for (; nbytes >= sizeof *p; p = (struct dn_pipe *)next) {
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double b = p->bandwidth;
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char buf[30];
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char prefix[80];
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2009-06-24 22:57:07 +00:00
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char burst[5 + 7];
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2009-01-27 11:06:59 +00:00
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if (SLIST_NEXT(p, next) != (struct dn_pipe *)DN_IS_PIPE)
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break; /* done with pipes, now queues */
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/*
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* compute length, as pipe have variable size
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*/
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l = sizeof(*p) + p->fs.rq_elements * sizeof(*q);
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next = (char *)p + l;
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nbytes -= l;
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if ((rulenum != 0 && rulenum != p->pipe_nr) || co.do_pipe == 2)
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continue;
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/*
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* Print rate (or clocking interface)
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*/
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if (p->if_name[0] != '\0')
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sprintf(buf, "%s", p->if_name);
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else if (b == 0)
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sprintf(buf, "unlimited");
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else if (b >= 1000000)
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sprintf(buf, "%7.3f Mbit/s", b/1000000);
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else if (b >= 1000)
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sprintf(buf, "%7.3f Kbit/s", b/1000);
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else
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sprintf(buf, "%7.3f bit/s ", b);
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sprintf(prefix, "%05d: %s %4d ms ",
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p->pipe_nr, buf, p->delay);
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2009-04-09 12:46:00 +00:00
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2009-01-27 11:06:59 +00:00
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print_flowset_parms(&(p->fs), prefix);
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2009-06-24 22:57:07 +00:00
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if (humanize_number(burst, sizeof(burst), p->burst,
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"Byte", HN_AUTOSCALE, 0) < 0 || co.verbose)
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printf("\t burst: %ju Byte\n", p->burst);
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else
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printf("\t burst: %s\n", burst);
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print_extra_delay_parms(p);
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2009-01-27 11:06:59 +00:00
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q = (struct dn_flow_queue *)(p+1);
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list_queues(&(p->fs), q);
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}
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|
|
for (fs = next; nbytes >= sizeof *fs; fs = next) {
|
|
|
|
char prefix[80];
|
|
|
|
|
|
|
|
if (SLIST_NEXT(fs, next) != (struct dn_flow_set *)DN_IS_QUEUE)
|
|
|
|
break;
|
|
|
|
l = sizeof(*fs) + fs->rq_elements * sizeof(*q);
|
|
|
|
next = (char *)fs + l;
|
|
|
|
nbytes -= l;
|
|
|
|
|
|
|
|
if (rulenum != 0 && ((rulenum != fs->fs_nr && co.do_pipe == 2) ||
|
|
|
|
(rulenum != fs->parent_nr && co.do_pipe == 1))) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
q = (struct dn_flow_queue *)(fs+1);
|
|
|
|
sprintf(prefix, "q%05d: weight %d pipe %d ",
|
|
|
|
fs->fs_nr, fs->weight, fs->parent_nr);
|
|
|
|
print_flowset_parms(fs, prefix);
|
|
|
|
list_queues(fs, q);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Delete pipe or queue i
|
|
|
|
*/
|
|
|
|
int
|
2009-01-27 12:24:53 +00:00
|
|
|
ipfw_delete_pipe(int pipe_or_queue, int i)
|
2009-01-27 11:06:59 +00:00
|
|
|
{
|
|
|
|
struct dn_pipe p;
|
|
|
|
|
|
|
|
memset(&p, 0, sizeof p);
|
|
|
|
if (pipe_or_queue == 1)
|
|
|
|
p.pipe_nr = i; /* pipe */
|
|
|
|
else
|
|
|
|
p.fs.fs_nr = i; /* queue */
|
|
|
|
i = do_cmd(IP_DUMMYNET_DEL, &p, sizeof p);
|
|
|
|
if (i) {
|
|
|
|
i = 1;
|
|
|
|
warn("rule %u: setsockopt(IP_DUMMYNET_DEL)", i);
|
|
|
|
}
|
|
|
|
return i;
|
|
|
|
}
|
|
|
|
|
2009-04-09 12:46:00 +00:00
|
|
|
/*
|
|
|
|
* Code to parse delay profiles.
|
|
|
|
*
|
|
|
|
* Some link types introduce extra delays in the transmission
|
|
|
|
* of a packet, e.g. because of MAC level framing, contention on
|
|
|
|
* the use of the channel, MAC level retransmissions and so on.
|
|
|
|
* From our point of view, the channel is effectively unavailable
|
|
|
|
* for this extra time, which is constant or variable depending
|
|
|
|
* on the link type. Additionally, packets may be dropped after this
|
|
|
|
* time (e.g. on a wireless link after too many retransmissions).
|
|
|
|
* We can model the additional delay with an empirical curve
|
|
|
|
* that represents its distribution.
|
|
|
|
*
|
|
|
|
* cumulative probability
|
|
|
|
* 1.0 ^
|
|
|
|
* |
|
|
|
|
* L +-- loss-level x
|
|
|
|
* | ******
|
|
|
|
* | *
|
|
|
|
* | *****
|
|
|
|
* | *
|
|
|
|
* | **
|
|
|
|
* | *
|
|
|
|
* +-------*------------------->
|
|
|
|
* delay
|
|
|
|
*
|
|
|
|
* The empirical curve may have both vertical and horizontal lines.
|
|
|
|
* Vertical lines represent constant delay for a range of
|
|
|
|
* probabilities; horizontal lines correspond to a discontinuty
|
|
|
|
* in the delay distribution: the pipe will use the largest delay
|
|
|
|
* for a given probability.
|
|
|
|
*
|
|
|
|
* To pass the curve to dummynet, we must store the parameters
|
|
|
|
* in a file as described below, and issue the command
|
|
|
|
*
|
|
|
|
* ipfw pipe <n> config ... bw XXX profile <filename> ...
|
|
|
|
*
|
|
|
|
* The file format is the following, with whitespace acting as
|
|
|
|
* a separator and '#' indicating the beginning a comment:
|
|
|
|
*
|
|
|
|
* samples N
|
|
|
|
* the number of samples used in the internal
|
|
|
|
* representation (2..1024; default 100);
|
|
|
|
*
|
|
|
|
* loss-level L
|
|
|
|
* The probability above which packets are lost.
|
|
|
|
* (0.0 <= L <= 1.0, default 1.0 i.e. no loss);
|
|
|
|
*
|
|
|
|
* name identifier
|
|
|
|
* Optional a name (listed by "ipfw pipe show")
|
|
|
|
* to identify the distribution;
|
|
|
|
*
|
|
|
|
* "delay prob" | "prob delay"
|
|
|
|
* One of these two lines is mandatory and defines
|
|
|
|
* the format of the following lines with data points.
|
|
|
|
*
|
|
|
|
* XXX YYY
|
|
|
|
* 2 or more lines representing points in the curve,
|
|
|
|
* with either delay or probability first, according
|
|
|
|
* to the chosen format.
|
|
|
|
* The unit for delay is milliseconds.
|
|
|
|
*
|
|
|
|
* Data points does not need to be ordered or equal to the number
|
|
|
|
* specified in the "samples" line. ipfw will sort and interpolate
|
|
|
|
* the curve as needed.
|
|
|
|
*
|
|
|
|
* Example of a profile file:
|
|
|
|
|
|
|
|
name bla_bla_bla
|
|
|
|
samples 100
|
|
|
|
loss-level 0.86
|
|
|
|
prob delay
|
|
|
|
0 200 # minimum overhead is 200ms
|
|
|
|
0.5 200
|
|
|
|
0.5 300
|
|
|
|
0.8 1000
|
|
|
|
0.9 1300
|
|
|
|
1 1300
|
|
|
|
|
|
|
|
* Internally, we will convert the curve to a fixed number of
|
|
|
|
* samples, and when it is time to transmit a packet we will
|
|
|
|
* model the extra delay as extra bits in the packet.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
#define ED_MAX_LINE_LEN 256+ED_MAX_NAME_LEN
|
|
|
|
#define ED_TOK_SAMPLES "samples"
|
|
|
|
#define ED_TOK_LOSS "loss-level"
|
|
|
|
#define ED_TOK_NAME "name"
|
|
|
|
#define ED_TOK_DELAY "delay"
|
|
|
|
#define ED_TOK_PROB "prob"
|
2009-06-08 14:32:29 +00:00
|
|
|
#define ED_TOK_BW "bw"
|
2009-04-09 12:46:00 +00:00
|
|
|
#define ED_SEPARATORS " \t\n"
|
|
|
|
#define ED_MIN_SAMPLES_NO 2
|
|
|
|
|
|
|
|
/*
|
|
|
|
* returns 1 if s is a non-negative number, with at least one '.'
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
is_valid_number(const char *s)
|
|
|
|
{
|
|
|
|
int i, dots_found = 0;
|
|
|
|
int len = strlen(s);
|
|
|
|
|
|
|
|
for (i = 0; i<len; ++i)
|
|
|
|
if (!isdigit(s[i]) && (s[i] !='.' || ++dots_found > 1))
|
|
|
|
return 0;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2009-06-08 14:32:29 +00:00
|
|
|
/*
|
|
|
|
* Take as input a string describing a bandwidth value
|
|
|
|
* and return the numeric bandwidth value.
|
|
|
|
* set clocking interface or bandwidth value
|
|
|
|
*/
|
2009-12-03 12:23:48 +00:00
|
|
|
static void
|
2009-06-08 14:32:29 +00:00
|
|
|
read_bandwidth(char *arg, int *bandwidth, char *if_name, int namelen)
|
|
|
|
{
|
|
|
|
if (*bandwidth != -1)
|
|
|
|
warn("duplicate token, override bandwidth value!");
|
|
|
|
|
|
|
|
if (arg[0] >= 'a' && arg[0] <= 'z') {
|
|
|
|
if (namelen >= IFNAMSIZ)
|
|
|
|
warn("interface name truncated");
|
|
|
|
namelen--;
|
|
|
|
/* interface name */
|
|
|
|
strncpy(if_name, arg, namelen);
|
|
|
|
if_name[namelen] = '\0';
|
|
|
|
*bandwidth = 0;
|
|
|
|
} else { /* read bandwidth value */
|
|
|
|
int bw;
|
|
|
|
char *end = NULL;
|
|
|
|
|
|
|
|
bw = strtoul(arg, &end, 0);
|
|
|
|
if (*end == 'K' || *end == 'k') {
|
|
|
|
end++;
|
|
|
|
bw *= 1000;
|
|
|
|
} else if (*end == 'M') {
|
|
|
|
end++;
|
|
|
|
bw *= 1000000;
|
|
|
|
}
|
|
|
|
if ((*end == 'B' &&
|
|
|
|
_substrcmp2(end, "Bi", "Bit/s") != 0) ||
|
|
|
|
_substrcmp2(end, "by", "bytes") == 0)
|
|
|
|
bw *= 8;
|
|
|
|
|
|
|
|
if (bw < 0)
|
|
|
|
errx(EX_DATAERR, "bandwidth too large");
|
|
|
|
|
|
|
|
*bandwidth = bw;
|
|
|
|
if_name[0] = '\0';
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-04-09 12:46:00 +00:00
|
|
|
struct point {
|
|
|
|
double prob;
|
|
|
|
double delay;
|
|
|
|
};
|
|
|
|
|
2009-12-03 12:23:48 +00:00
|
|
|
static int
|
2009-04-09 12:46:00 +00:00
|
|
|
compare_points(const void *vp1, const void *vp2)
|
|
|
|
{
|
|
|
|
const struct point *p1 = vp1;
|
|
|
|
const struct point *p2 = vp2;
|
|
|
|
double res = 0;
|
|
|
|
|
|
|
|
res = p1->prob - p2->prob;
|
|
|
|
if (res == 0)
|
|
|
|
res = p1->delay - p2->delay;
|
|
|
|
if (res < 0)
|
|
|
|
return -1;
|
|
|
|
else if (res > 0)
|
|
|
|
return 1;
|
|
|
|
else
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#define ED_EFMT(s) EX_DATAERR,"error in %s at line %d: "#s,filename,lineno
|
|
|
|
|
|
|
|
static void
|
|
|
|
load_extra_delays(const char *filename, struct dn_pipe *p)
|
|
|
|
{
|
|
|
|
char line[ED_MAX_LINE_LEN];
|
|
|
|
FILE *f;
|
|
|
|
int lineno = 0;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
int samples = -1;
|
|
|
|
double loss = -1.0;
|
|
|
|
char profile_name[ED_MAX_NAME_LEN];
|
|
|
|
int delay_first = -1;
|
|
|
|
int do_points = 0;
|
|
|
|
struct point points[ED_MAX_SAMPLES_NO];
|
|
|
|
int points_no = 0;
|
|
|
|
|
|
|
|
profile_name[0] = '\0';
|
|
|
|
f = fopen(filename, "r");
|
|
|
|
if (f == NULL)
|
|
|
|
err(EX_UNAVAILABLE, "fopen: %s", filename);
|
|
|
|
|
|
|
|
while (fgets(line, ED_MAX_LINE_LEN, f)) { /* read commands */
|
|
|
|
char *s, *cur = line, *name = NULL, *arg = NULL;
|
|
|
|
|
|
|
|
++lineno;
|
|
|
|
|
|
|
|
/* parse the line */
|
|
|
|
while (cur) {
|
|
|
|
s = strsep(&cur, ED_SEPARATORS);
|
|
|
|
if (s == NULL || *s == '#')
|
|
|
|
break;
|
|
|
|
if (*s == '\0')
|
|
|
|
continue;
|
|
|
|
if (arg)
|
|
|
|
errx(ED_EFMT("too many arguments"));
|
|
|
|
if (name == NULL)
|
|
|
|
name = s;
|
|
|
|
else
|
|
|
|
arg = s;
|
|
|
|
}
|
|
|
|
if (name == NULL) /* empty line */
|
|
|
|
continue;
|
|
|
|
if (arg == NULL)
|
|
|
|
errx(ED_EFMT("missing arg for %s"), name);
|
|
|
|
|
|
|
|
if (!strcasecmp(name, ED_TOK_SAMPLES)) {
|
|
|
|
if (samples > 0)
|
|
|
|
errx(ED_EFMT("duplicate ``samples'' line"));
|
|
|
|
if (atoi(arg) <=0)
|
|
|
|
errx(ED_EFMT("invalid number of samples"));
|
|
|
|
samples = atoi(arg);
|
|
|
|
if (samples>ED_MAX_SAMPLES_NO)
|
|
|
|
errx(ED_EFMT("too many samples, maximum is %d"),
|
|
|
|
ED_MAX_SAMPLES_NO);
|
|
|
|
do_points = 0;
|
2009-06-08 14:32:29 +00:00
|
|
|
} else if (!strcasecmp(name, ED_TOK_BW)) {
|
|
|
|
read_bandwidth(arg, &p->bandwidth, p->if_name, sizeof(p->if_name));
|
2009-04-09 12:46:00 +00:00
|
|
|
} else if (!strcasecmp(name, ED_TOK_LOSS)) {
|
|
|
|
if (loss != -1.0)
|
|
|
|
errx(ED_EFMT("duplicated token: %s"), name);
|
|
|
|
if (!is_valid_number(arg))
|
|
|
|
errx(ED_EFMT("invalid %s"), arg);
|
|
|
|
loss = atof(arg);
|
|
|
|
if (loss > 1)
|
|
|
|
errx(ED_EFMT("%s greater than 1.0"), name);
|
|
|
|
do_points = 0;
|
|
|
|
} else if (!strcasecmp(name, ED_TOK_NAME)) {
|
|
|
|
if (profile_name[0] != '\0')
|
|
|
|
errx(ED_EFMT("duplicated token: %s"), name);
|
|
|
|
strncpy(profile_name, arg, sizeof(profile_name) - 1);
|
|
|
|
profile_name[sizeof(profile_name)-1] = '\0';
|
|
|
|
do_points = 0;
|
|
|
|
} else if (!strcasecmp(name, ED_TOK_DELAY)) {
|
|
|
|
if (do_points)
|
|
|
|
errx(ED_EFMT("duplicated token: %s"), name);
|
|
|
|
delay_first = 1;
|
|
|
|
do_points = 1;
|
|
|
|
} else if (!strcasecmp(name, ED_TOK_PROB)) {
|
|
|
|
if (do_points)
|
|
|
|
errx(ED_EFMT("duplicated token: %s"), name);
|
|
|
|
delay_first = 0;
|
|
|
|
do_points = 1;
|
|
|
|
} else if (do_points) {
|
|
|
|
if (!is_valid_number(name) || !is_valid_number(arg))
|
|
|
|
errx(ED_EFMT("invalid point found"));
|
|
|
|
if (delay_first) {
|
|
|
|
points[points_no].delay = atof(name);
|
|
|
|
points[points_no].prob = atof(arg);
|
|
|
|
} else {
|
|
|
|
points[points_no].delay = atof(arg);
|
|
|
|
points[points_no].prob = atof(name);
|
|
|
|
}
|
|
|
|
if (points[points_no].prob > 1.0)
|
|
|
|
errx(ED_EFMT("probability greater than 1.0"));
|
|
|
|
++points_no;
|
|
|
|
} else {
|
|
|
|
errx(ED_EFMT("unrecognised command '%s'"), name);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-11-21 10:46:49 +00:00
|
|
|
fclose (f);
|
|
|
|
|
2009-04-09 12:46:00 +00:00
|
|
|
if (samples == -1) {
|
|
|
|
warnx("'%s' not found, assuming 100", ED_TOK_SAMPLES);
|
|
|
|
samples = 100;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (loss == -1.0) {
|
|
|
|
warnx("'%s' not found, assuming no loss", ED_TOK_LOSS);
|
|
|
|
loss = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* make sure that there are enough points. */
|
|
|
|
if (points_no < ED_MIN_SAMPLES_NO)
|
|
|
|
errx(ED_EFMT("too few samples, need at least %d"),
|
|
|
|
ED_MIN_SAMPLES_NO);
|
|
|
|
|
|
|
|
qsort(points, points_no, sizeof(struct point), compare_points);
|
|
|
|
|
|
|
|
/* interpolation */
|
|
|
|
for (i = 0; i<points_no-1; ++i) {
|
|
|
|
double y1 = points[i].prob * samples;
|
|
|
|
double x1 = points[i].delay;
|
|
|
|
double y2 = points[i+1].prob * samples;
|
|
|
|
double x2 = points[i+1].delay;
|
|
|
|
|
|
|
|
int index = y1;
|
|
|
|
int stop = y2;
|
|
|
|
|
|
|
|
if (x1 == x2) {
|
|
|
|
for (; index<stop; ++index)
|
|
|
|
p->samples[index] = x1;
|
|
|
|
} else {
|
|
|
|
double m = (y2-y1)/(x2-x1);
|
|
|
|
double c = y1 - m*x1;
|
|
|
|
for (; index<stop ; ++index)
|
|
|
|
p->samples[index] = (index - c)/m;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
p->samples_no = samples;
|
|
|
|
p->loss_level = loss * samples;
|
|
|
|
strncpy(p->name, profile_name, sizeof(p->name));
|
|
|
|
}
|
|
|
|
|
2009-01-27 11:06:59 +00:00
|
|
|
void
|
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ipfw_config_pipe(int ac, char **av)
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{
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2009-04-09 12:46:00 +00:00
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int samples[ED_MAX_SAMPLES_NO];
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2009-01-27 11:06:59 +00:00
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struct dn_pipe p;
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int i;
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char *end;
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void *par = NULL;
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memset(&p, 0, sizeof p);
|
2009-06-08 14:32:29 +00:00
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p.bandwidth = -1;
|
2009-01-27 11:06:59 +00:00
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av++; ac--;
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/* Pipe number */
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if (ac && isdigit(**av)) {
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i = atoi(*av); av++; ac--;
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if (co.do_pipe == 1)
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p.pipe_nr = i;
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else
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p.fs.fs_nr = i;
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}
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while (ac > 0) {
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double d;
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int tok = match_token(dummynet_params, *av);
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ac--; av++;
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switch(tok) {
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case TOK_NOERROR:
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p.fs.flags_fs |= DN_NOERROR;
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break;
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case TOK_PLR:
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NEED1("plr needs argument 0..1\n");
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d = strtod(av[0], NULL);
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if (d > 1)
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d = 1;
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else if (d < 0)
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d = 0;
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p.fs.plr = (int)(d*0x7fffffff);
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ac--; av++;
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break;
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case TOK_QUEUE:
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NEED1("queue needs queue size\n");
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end = NULL;
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p.fs.qsize = strtoul(av[0], &end, 0);
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if (*end == 'K' || *end == 'k') {
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p.fs.flags_fs |= DN_QSIZE_IS_BYTES;
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p.fs.qsize *= 1024;
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} else if (*end == 'B' ||
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_substrcmp2(end, "by", "bytes") == 0) {
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p.fs.flags_fs |= DN_QSIZE_IS_BYTES;
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}
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ac--; av++;
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break;
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case TOK_BUCKETS:
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NEED1("buckets needs argument\n");
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p.fs.rq_size = strtoul(av[0], NULL, 0);
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ac--; av++;
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break;
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case TOK_MASK:
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NEED1("mask needs mask specifier\n");
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/*
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* per-flow queue, mask is dst_ip, dst_port,
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* src_ip, src_port, proto measured in bits
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*/
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par = NULL;
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bzero(&p.fs.flow_mask, sizeof(p.fs.flow_mask));
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end = NULL;
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while (ac >= 1) {
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uint32_t *p32 = NULL;
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uint16_t *p16 = NULL;
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uint32_t *p20 = NULL;
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struct in6_addr *pa6 = NULL;
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uint32_t a;
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tok = match_token(dummynet_params, *av);
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ac--; av++;
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switch(tok) {
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case TOK_ALL:
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/*
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* special case, all bits significant
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*/
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p.fs.flow_mask.dst_ip = ~0;
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p.fs.flow_mask.src_ip = ~0;
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p.fs.flow_mask.dst_port = ~0;
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p.fs.flow_mask.src_port = ~0;
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p.fs.flow_mask.proto = ~0;
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n2mask(&(p.fs.flow_mask.dst_ip6), 128);
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n2mask(&(p.fs.flow_mask.src_ip6), 128);
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p.fs.flow_mask.flow_id6 = ~0;
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p.fs.flags_fs |= DN_HAVE_FLOW_MASK;
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goto end_mask;
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case TOK_DSTIP:
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p32 = &p.fs.flow_mask.dst_ip;
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break;
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case TOK_SRCIP:
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p32 = &p.fs.flow_mask.src_ip;
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break;
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case TOK_DSTIP6:
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pa6 = &(p.fs.flow_mask.dst_ip6);
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break;
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case TOK_SRCIP6:
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pa6 = &(p.fs.flow_mask.src_ip6);
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break;
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case TOK_FLOWID:
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p20 = &p.fs.flow_mask.flow_id6;
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break;
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case TOK_DSTPORT:
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p16 = &p.fs.flow_mask.dst_port;
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break;
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case TOK_SRCPORT:
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p16 = &p.fs.flow_mask.src_port;
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break;
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case TOK_PROTO:
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break;
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default:
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ac++; av--; /* backtrack */
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goto end_mask;
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}
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if (ac < 1)
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errx(EX_USAGE, "mask: value missing");
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if (*av[0] == '/') {
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a = strtoul(av[0]+1, &end, 0);
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if (pa6 == NULL)
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a = (a == 32) ? ~0 : (1 << a) - 1;
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} else
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a = strtoul(av[0], &end, 0);
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if (p32 != NULL)
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*p32 = a;
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else if (p16 != NULL) {
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if (a > 0xFFFF)
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errx(EX_DATAERR,
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"port mask must be 16 bit");
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*p16 = (uint16_t)a;
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} else if (p20 != NULL) {
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if (a > 0xfffff)
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errx(EX_DATAERR,
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"flow_id mask must be 20 bit");
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*p20 = (uint32_t)a;
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} else if (pa6 != NULL) {
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if (a > 128)
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errx(EX_DATAERR,
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"in6addr invalid mask len");
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else
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n2mask(pa6, a);
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} else {
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if (a > 0xFF)
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errx(EX_DATAERR,
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"proto mask must be 8 bit");
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p.fs.flow_mask.proto = (uint8_t)a;
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}
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if (a != 0)
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p.fs.flags_fs |= DN_HAVE_FLOW_MASK;
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ac--; av++;
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} /* end while, config masks */
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end_mask:
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break;
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case TOK_RED:
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case TOK_GRED:
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NEED1("red/gred needs w_q/min_th/max_th/max_p\n");
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p.fs.flags_fs |= DN_IS_RED;
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if (tok == TOK_GRED)
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p.fs.flags_fs |= DN_IS_GENTLE_RED;
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/*
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* the format for parameters is w_q/min_th/max_th/max_p
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*/
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if ((end = strsep(&av[0], "/"))) {
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double w_q = strtod(end, NULL);
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if (w_q > 1 || w_q <= 0)
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errx(EX_DATAERR, "0 < w_q <= 1");
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p.fs.w_q = (int) (w_q * (1 << SCALE_RED));
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}
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if ((end = strsep(&av[0], "/"))) {
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p.fs.min_th = strtoul(end, &end, 0);
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if (*end == 'K' || *end == 'k')
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p.fs.min_th *= 1024;
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}
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if ((end = strsep(&av[0], "/"))) {
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p.fs.max_th = strtoul(end, &end, 0);
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if (*end == 'K' || *end == 'k')
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p.fs.max_th *= 1024;
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}
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if ((end = strsep(&av[0], "/"))) {
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double max_p = strtod(end, NULL);
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if (max_p > 1 || max_p <= 0)
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errx(EX_DATAERR, "0 < max_p <= 1");
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p.fs.max_p = (int)(max_p * (1 << SCALE_RED));
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}
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ac--; av++;
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break;
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case TOK_DROPTAIL:
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p.fs.flags_fs &= ~(DN_IS_RED|DN_IS_GENTLE_RED);
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break;
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case TOK_BW:
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NEED1("bw needs bandwidth or interface\n");
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if (co.do_pipe != 1)
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errx(EX_DATAERR, "bandwidth only valid for pipes");
|
2009-06-08 14:32:29 +00:00
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read_bandwidth(av[0], &p.bandwidth, p.if_name, sizeof(p.if_name));
|
2009-01-27 11:06:59 +00:00
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ac--; av++;
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break;
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case TOK_DELAY:
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if (co.do_pipe != 1)
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errx(EX_DATAERR, "delay only valid for pipes");
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NEED1("delay needs argument 0..10000ms\n");
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p.delay = strtoul(av[0], NULL, 0);
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ac--; av++;
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break;
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case TOK_WEIGHT:
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if (co.do_pipe == 1)
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errx(EX_DATAERR,"weight only valid for queues");
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NEED1("weight needs argument 0..100\n");
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p.fs.weight = strtoul(av[0], &end, 0);
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ac--; av++;
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break;
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case TOK_PIPE:
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if (co.do_pipe == 1)
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errx(EX_DATAERR,"pipe only valid for queues");
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NEED1("pipe needs pipe_number\n");
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p.fs.parent_nr = strtoul(av[0], &end, 0);
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ac--; av++;
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break;
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|
2009-04-09 12:46:00 +00:00
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case TOK_PIPE_PROFILE:
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if (co.do_pipe != 1)
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errx(EX_DATAERR, "extra delay only valid for pipes");
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NEED1("extra delay needs the file name\n");
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p.samples = &samples[0];
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load_extra_delays(av[0], &p);
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--ac; ++av;
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break;
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|
2009-06-24 22:57:07 +00:00
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case TOK_BURST:
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if (co.do_pipe != 1)
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errx(EX_DATAERR, "burst only valid for pipes");
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NEED1("burst needs argument\n");
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errno = 0;
|
2009-12-04 14:18:30 +00:00
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if (expand_number(av[0], (int64_t *)&p.burst) < 0)
|
2009-06-24 22:57:07 +00:00
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|
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if (errno != ERANGE)
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errx(EX_DATAERR,
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"burst: invalid argument");
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if (errno || p.burst > (1ULL << 48) - 1)
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errx(EX_DATAERR,
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"burst: out of range (0..2^48-1)");
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ac--; av++;
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break;
|
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|
2009-01-27 11:06:59 +00:00
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default:
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errx(EX_DATAERR, "unrecognised option ``%s''", av[-1]);
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}
|
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}
|
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|
|
if (co.do_pipe == 1) {
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|
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if (p.pipe_nr == 0)
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|
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errx(EX_DATAERR, "pipe_nr must be > 0");
|
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|
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if (p.delay > 10000)
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errx(EX_DATAERR, "delay must be < 10000");
|
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|
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} else { /* co.do_pipe == 2, queue */
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if (p.fs.parent_nr == 0)
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errx(EX_DATAERR, "pipe must be > 0");
|
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|
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if (p.fs.weight >100)
|
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|
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errx(EX_DATAERR, "weight must be <= 100");
|
|
|
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}
|
2009-06-08 14:32:29 +00:00
|
|
|
|
|
|
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/* check for bandwidth value */
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|
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if (p.bandwidth == -1) {
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|
|
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p.bandwidth = 0;
|
|
|
|
if (p.samples_no > 0)
|
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|
|
errx(EX_DATAERR, "profile requires a bandwidth limit");
|
|
|
|
}
|
|
|
|
|
2009-01-27 11:06:59 +00:00
|
|
|
if (p.fs.flags_fs & DN_QSIZE_IS_BYTES) {
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|
|
|
size_t len;
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|
|
|
long limit;
|
|
|
|
|
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|
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len = sizeof(limit);
|
|
|
|
if (sysctlbyname("net.inet.ip.dummynet.pipe_byte_limit",
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&limit, &len, NULL, 0) == -1)
|
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|
|
limit = 1024*1024;
|
|
|
|
if (p.fs.qsize > limit)
|
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|
|
errx(EX_DATAERR, "queue size must be < %ldB", limit);
|
|
|
|
} else {
|
|
|
|
size_t len;
|
|
|
|
long limit;
|
|
|
|
|
|
|
|
len = sizeof(limit);
|
|
|
|
if (sysctlbyname("net.inet.ip.dummynet.pipe_slot_limit",
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|
|
&limit, &len, NULL, 0) == -1)
|
|
|
|
limit = 100;
|
|
|
|
if (p.fs.qsize > limit)
|
|
|
|
errx(EX_DATAERR, "2 <= queue size <= %ld", limit);
|
|
|
|
}
|
|
|
|
if (p.fs.flags_fs & DN_IS_RED) {
|
|
|
|
size_t len;
|
|
|
|
int lookup_depth, avg_pkt_size;
|
|
|
|
double s, idle, weight, w_q;
|
|
|
|
struct clockinfo ck;
|
|
|
|
int t;
|
|
|
|
|
|
|
|
if (p.fs.min_th >= p.fs.max_th)
|
|
|
|
errx(EX_DATAERR, "min_th %d must be < than max_th %d",
|
|
|
|
p.fs.min_th, p.fs.max_th);
|
|
|
|
if (p.fs.max_th == 0)
|
|
|
|
errx(EX_DATAERR, "max_th must be > 0");
|
|
|
|
|
|
|
|
len = sizeof(int);
|
|
|
|
if (sysctlbyname("net.inet.ip.dummynet.red_lookup_depth",
|
|
|
|
&lookup_depth, &len, NULL, 0) == -1)
|
|
|
|
errx(1, "sysctlbyname(\"%s\")",
|
|
|
|
"net.inet.ip.dummynet.red_lookup_depth");
|
|
|
|
if (lookup_depth == 0)
|
|
|
|
errx(EX_DATAERR, "net.inet.ip.dummynet.red_lookup_depth"
|
|
|
|
" must be greater than zero");
|
|
|
|
|
|
|
|
len = sizeof(int);
|
|
|
|
if (sysctlbyname("net.inet.ip.dummynet.red_avg_pkt_size",
|
|
|
|
&avg_pkt_size, &len, NULL, 0) == -1)
|
|
|
|
|
|
|
|
errx(1, "sysctlbyname(\"%s\")",
|
|
|
|
"net.inet.ip.dummynet.red_avg_pkt_size");
|
|
|
|
if (avg_pkt_size == 0)
|
|
|
|
errx(EX_DATAERR,
|
|
|
|
"net.inet.ip.dummynet.red_avg_pkt_size must"
|
|
|
|
" be greater than zero");
|
|
|
|
|
|
|
|
len = sizeof(struct clockinfo);
|
|
|
|
if (sysctlbyname("kern.clockrate", &ck, &len, NULL, 0) == -1)
|
|
|
|
errx(1, "sysctlbyname(\"%s\")", "kern.clockrate");
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Ticks needed for sending a medium-sized packet.
|
|
|
|
* Unfortunately, when we are configuring a WF2Q+ queue, we
|
|
|
|
* do not have bandwidth information, because that is stored
|
|
|
|
* in the parent pipe, and also we have multiple queues
|
|
|
|
* competing for it. So we set s=0, which is not very
|
|
|
|
* correct. But on the other hand, why do we want RED with
|
|
|
|
* WF2Q+ ?
|
|
|
|
*/
|
|
|
|
if (p.bandwidth==0) /* this is a WF2Q+ queue */
|
|
|
|
s = 0;
|
|
|
|
else
|
|
|
|
s = (double)ck.hz * avg_pkt_size * 8 / p.bandwidth;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* max idle time (in ticks) before avg queue size becomes 0.
|
|
|
|
* NOTA: (3/w_q) is approx the value x so that
|
|
|
|
* (1-w_q)^x < 10^-3.
|
|
|
|
*/
|
|
|
|
w_q = ((double)p.fs.w_q) / (1 << SCALE_RED);
|
|
|
|
idle = s * 3. / w_q;
|
|
|
|
p.fs.lookup_step = (int)idle / lookup_depth;
|
|
|
|
if (!p.fs.lookup_step)
|
|
|
|
p.fs.lookup_step = 1;
|
|
|
|
weight = 1 - w_q;
|
|
|
|
for (t = p.fs.lookup_step; t > 1; --t)
|
|
|
|
weight *= 1 - w_q;
|
|
|
|
p.fs.lookup_weight = (int)(weight * (1 << SCALE_RED));
|
|
|
|
}
|
2009-04-09 12:46:00 +00:00
|
|
|
if (p.samples_no <= 0) {
|
|
|
|
i = do_cmd(IP_DUMMYNET_CONFIGURE, &p, sizeof p);
|
|
|
|
} else {
|
|
|
|
struct dn_pipe_max pm;
|
|
|
|
int len = sizeof(pm);
|
|
|
|
|
|
|
|
memcpy(&pm.pipe, &p, sizeof(pm.pipe));
|
|
|
|
memcpy(&pm.samples, samples, sizeof(pm.samples));
|
|
|
|
|
|
|
|
i = do_cmd(IP_DUMMYNET_CONFIGURE, &pm, len);
|
|
|
|
}
|
|
|
|
|
2009-01-27 11:06:59 +00:00
|
|
|
if (i)
|
|
|
|
err(1, "setsockopt(%s)", "IP_DUMMYNET_CONFIGURE");
|
|
|
|
}
|