| /* |
| * m_police.c Parse/print policing module options. |
| * |
| * This program is free software; you can u32istribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
| * FIXES: 19990619 - J Hadi Salim (hadi@cyberus.ca) |
| * simple addattr packaging fix. |
| * 2002: J Hadi Salim - Add tc action extensions syntax |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <sys/socket.h> |
| #include <netinet/in.h> |
| #include <arpa/inet.h> |
| #include <string.h> |
| |
| #include "utils.h" |
| #include "tc_util.h" |
| |
| static int act_parse_police(struct action_util *a, int *argc_p, |
| char ***argv_p, int tca_id, struct nlmsghdr *n); |
| static int print_police(struct action_util *a, FILE *f, struct rtattr *tb); |
| |
| struct action_util police_action_util = { |
| .id = "police", |
| .parse_aopt = act_parse_police, |
| .print_aopt = print_police, |
| }; |
| |
| static void usage(void) |
| { |
| fprintf(stderr, |
| "Usage: ... police [ rate BPS burst BYTES[/BYTES] ] \n" |
| " [ pkts_rate RATE pkts_burst PACKETS ] [ mtu BYTES[/BYTES] ]\n" |
| " [ peakrate BPS ] [ avrate BPS ] [ overhead BYTES ]\n" |
| " [ linklayer TYPE ] [ CONTROL ]\n" |
| "Where: CONTROL := conform-exceed <EXCEEDACT>[/NOTEXCEEDACT]\n" |
| " Define how to handle packets which exceed (<EXCEEDACT>)\n" |
| " or conform (<NOTEXCEEDACT>) the configured bandwidth limit.\n" |
| " EXCEEDACT/NOTEXCEEDACT := { pipe | ok | reclassify | drop | continue |\n" |
| " goto chain <CHAIN_INDEX> }\n"); |
| exit(-1); |
| } |
| |
| static int act_parse_police(struct action_util *a, int *argc_p, char ***argv_p, |
| int tca_id, struct nlmsghdr *n) |
| { |
| int argc = *argc_p; |
| char **argv = *argv_p; |
| int res = -1; |
| int ok = 0; |
| struct tc_police p = { .action = TC_POLICE_RECLASSIFY }; |
| __u32 rtab[256]; |
| __u32 ptab[256]; |
| __u32 avrate = 0; |
| int presult = 0; |
| unsigned buffer = 0, mtu = 0, mpu = 0; |
| unsigned short overhead = 0; |
| unsigned int linklayer = LINKLAYER_ETHERNET; /* Assume ethernet */ |
| int Rcell_log = -1, Pcell_log = -1; |
| struct rtattr *tail; |
| __u64 rate64 = 0, prate64 = 0; |
| __u64 pps64 = 0, ppsburst64 = 0; |
| |
| if (a) /* new way of doing things */ |
| NEXT_ARG(); |
| |
| if (argc <= 0) |
| return -1; |
| |
| while (argc > 0) { |
| |
| if (matches(*argv, "index") == 0) { |
| NEXT_ARG(); |
| if (get_u32(&p.index, *argv, 10)) |
| invarg("index", *argv); |
| } else if (matches(*argv, "burst") == 0 || |
| strcmp(*argv, "buffer") == 0 || |
| strcmp(*argv, "maxburst") == 0) { |
| NEXT_ARG(); |
| if (buffer) |
| duparg("buffer/burst", *argv); |
| if (get_size_and_cell(&buffer, &Rcell_log, *argv) < 0) |
| invarg("buffer", *argv); |
| } else if (strcmp(*argv, "mtu") == 0 || |
| strcmp(*argv, "minburst") == 0) { |
| NEXT_ARG(); |
| if (mtu) |
| duparg("mtu/minburst", *argv); |
| if (get_size_and_cell(&mtu, &Pcell_log, *argv) < 0) |
| invarg("mtu", *argv); |
| } else if (strcmp(*argv, "mpu") == 0) { |
| NEXT_ARG(); |
| if (mpu) |
| duparg("mpu", *argv); |
| if (get_size(&mpu, *argv)) |
| invarg("mpu", *argv); |
| } else if (strcmp(*argv, "rate") == 0) { |
| NEXT_ARG(); |
| if (rate64) |
| duparg("rate", *argv); |
| if (get_rate64(&rate64, *argv)) |
| invarg("rate", *argv); |
| } else if (strcmp(*argv, "avrate") == 0) { |
| NEXT_ARG(); |
| if (avrate) |
| duparg("avrate", *argv); |
| if (get_rate(&avrate, *argv)) |
| invarg("avrate", *argv); |
| } else if (matches(*argv, "peakrate") == 0) { |
| NEXT_ARG(); |
| if (prate64) |
| duparg("peakrate", *argv); |
| if (get_rate64(&prate64, *argv)) |
| invarg("peakrate", *argv); |
| } else if (matches(*argv, "reclassify") == 0 || |
| matches(*argv, "drop") == 0 || |
| matches(*argv, "shot") == 0 || |
| matches(*argv, "continue") == 0 || |
| matches(*argv, "pass") == 0 || |
| matches(*argv, "ok") == 0 || |
| matches(*argv, "pipe") == 0 || |
| matches(*argv, "goto") == 0) { |
| if (!parse_action_control(&argc, &argv, &p.action, false)) |
| goto action_ctrl_ok; |
| return -1; |
| } else if (strcmp(*argv, "conform-exceed") == 0) { |
| NEXT_ARG(); |
| if (!parse_action_control_slash(&argc, &argv, &p.action, |
| &presult, true)) |
| goto action_ctrl_ok; |
| return -1; |
| } else if (matches(*argv, "overhead") == 0) { |
| NEXT_ARG(); |
| if (get_u16(&overhead, *argv, 10)) |
| invarg("overhead", *argv); |
| } else if (matches(*argv, "linklayer") == 0) { |
| NEXT_ARG(); |
| if (get_linklayer(&linklayer, *argv)) |
| invarg("linklayer", *argv); |
| } else if (matches(*argv, "pkts_rate") == 0) { |
| NEXT_ARG(); |
| if (pps64) |
| duparg("pkts_rate", *argv); |
| if (get_u64(&pps64, *argv, 10)) |
| invarg("pkts_rate", *argv); |
| } else if (matches(*argv, "pkts_burst") == 0) { |
| NEXT_ARG(); |
| if (ppsburst64) |
| duparg("pkts_burst", *argv); |
| if (get_u64(&ppsburst64, *argv, 10)) |
| invarg("pkts_burst", *argv); |
| } else if (strcmp(*argv, "help") == 0) { |
| usage(); |
| } else { |
| break; |
| } |
| NEXT_ARG_FWD(); |
| action_ctrl_ok: |
| ok++; |
| } |
| |
| if (!ok) |
| return -1; |
| |
| if (rate64 && avrate) |
| return -1; |
| |
| /* Must at least do late binding, use TB or ewma policing */ |
| if (!rate64 && !avrate && !p.index && !mtu && !pps64) { |
| fprintf(stderr, "'rate' or 'avrate' or 'mtu' or 'pkts_rate' MUST be specified.\n"); |
| return -1; |
| } |
| |
| /* When the TB policer is used, burst is required */ |
| if (rate64 && !buffer && !avrate) { |
| fprintf(stderr, "'burst' requires 'rate'.\n"); |
| return -1; |
| } |
| |
| /* When the packets TB policer is used, pkts_burst is required */ |
| if (pps64 && !ppsburst64) { |
| fprintf(stderr, "'pkts_burst' requires 'pkts_rate'.\n"); |
| return -1; |
| } |
| |
| /* forbid rate and pkts_rate in same action */ |
| if (pps64 && rate64) { |
| fprintf(stderr, "'rate' and 'pkts_rate' are not allowed in same action.\n"); |
| return -1; |
| } |
| |
| if (prate64) { |
| if (!rate64) { |
| fprintf(stderr, "'peakrate' requires 'rate'.\n"); |
| return -1; |
| } |
| if (!mtu) { |
| fprintf(stderr, "'mtu' is required, if 'peakrate' is requested.\n"); |
| return -1; |
| } |
| } |
| |
| if (rate64) { |
| p.rate.rate = (rate64 >= (1ULL << 32)) ? ~0U : rate64; |
| p.rate.mpu = mpu; |
| p.rate.overhead = overhead; |
| if (tc_calc_rtable_64(&p.rate, rtab, Rcell_log, mtu, |
| linklayer, rate64) < 0) { |
| fprintf(stderr, "POLICE: failed to calculate rate table.\n"); |
| return -1; |
| } |
| p.burst = tc_calc_xmittime(rate64, buffer); |
| } |
| p.mtu = mtu; |
| if (prate64) { |
| p.peakrate.rate = (prate64 >= (1ULL << 32)) ? ~0U : prate64; |
| p.peakrate.mpu = mpu; |
| p.peakrate.overhead = overhead; |
| if (tc_calc_rtable_64(&p.peakrate, ptab, Pcell_log, mtu, |
| linklayer, prate64) < 0) { |
| fprintf(stderr, "POLICE: failed to calculate peak rate table.\n"); |
| return -1; |
| } |
| } |
| |
| tail = addattr_nest(n, MAX_MSG, tca_id); |
| addattr_l(n, MAX_MSG, TCA_POLICE_TBF, &p, sizeof(p)); |
| if (rate64) { |
| addattr_l(n, MAX_MSG, TCA_POLICE_RATE, rtab, 1024); |
| if (rate64 >= (1ULL << 32)) |
| addattr64(n, MAX_MSG, TCA_POLICE_RATE64, rate64); |
| } |
| if (prate64) { |
| addattr_l(n, MAX_MSG, TCA_POLICE_PEAKRATE, ptab, 1024); |
| if (prate64 >= (1ULL << 32)) |
| addattr64(n, MAX_MSG, TCA_POLICE_PEAKRATE64, prate64); |
| } |
| if (avrate) |
| addattr32(n, MAX_MSG, TCA_POLICE_AVRATE, avrate); |
| if (presult) |
| addattr32(n, MAX_MSG, TCA_POLICE_RESULT, presult); |
| |
| if (pps64) { |
| addattr64(n, MAX_MSG, TCA_POLICE_PKTRATE64, pps64); |
| ppsburst64 = tc_calc_xmittime(pps64, ppsburst64); |
| addattr64(n, MAX_MSG, TCA_POLICE_PKTBURST64, ppsburst64); |
| } |
| |
| addattr_nest_end(n, tail); |
| res = 0; |
| |
| *argc_p = argc; |
| *argv_p = argv; |
| return res; |
| } |
| |
| int parse_police(int *argc_p, char ***argv_p, int tca_id, struct nlmsghdr *n) |
| { |
| return act_parse_police(NULL, argc_p, argv_p, tca_id, n); |
| } |
| |
| static int print_police(struct action_util *a, FILE *f, struct rtattr *arg) |
| { |
| SPRINT_BUF(b2); |
| struct tc_police *p; |
| struct rtattr *tb[TCA_POLICE_MAX+1]; |
| unsigned int buffer; |
| unsigned int linklayer; |
| __u64 rate64, prate64; |
| __u64 pps64, ppsburst64; |
| |
| print_string(PRINT_JSON, "kind", "%s", "police"); |
| if (arg == NULL) |
| return 0; |
| |
| parse_rtattr_nested(tb, TCA_POLICE_MAX, arg); |
| |
| if (tb[TCA_POLICE_TBF] == NULL) { |
| fprintf(stderr, "[NULL police tbf]"); |
| return -1; |
| } |
| #ifndef STOOPID_8BYTE |
| if (RTA_PAYLOAD(tb[TCA_POLICE_TBF]) < sizeof(*p)) { |
| fprintf(stderr, "[truncated police tbf]"); |
| return -1; |
| } |
| #endif |
| p = RTA_DATA(tb[TCA_POLICE_TBF]); |
| |
| rate64 = p->rate.rate; |
| if (tb[TCA_POLICE_RATE64] && |
| RTA_PAYLOAD(tb[TCA_POLICE_RATE64]) >= sizeof(rate64)) |
| rate64 = rta_getattr_u64(tb[TCA_POLICE_RATE64]); |
| |
| print_hex(PRINT_FP, NULL, " police 0x%x ", p->index); |
| print_uint(PRINT_JSON, "index", NULL, p->index); |
| tc_print_rate(PRINT_FP, NULL, "rate %s ", rate64); |
| buffer = tc_calc_xmitsize(rate64, p->burst); |
| print_size(PRINT_FP, NULL, "burst %s ", buffer); |
| print_size(PRINT_FP, NULL, "mtu %s ", p->mtu); |
| if (show_raw) |
| print_hex(PRINT_FP, NULL, "[%08x] ", p->burst); |
| |
| prate64 = p->peakrate.rate; |
| if (tb[TCA_POLICE_PEAKRATE64] && |
| RTA_PAYLOAD(tb[TCA_POLICE_PEAKRATE64]) >= sizeof(prate64)) |
| prate64 = rta_getattr_u64(tb[TCA_POLICE_PEAKRATE64]); |
| |
| if (prate64) |
| tc_print_rate(PRINT_FP, NULL, "peakrate %s ", prate64); |
| |
| if (tb[TCA_POLICE_AVRATE]) |
| tc_print_rate(PRINT_FP, NULL, "avrate %s ", |
| rta_getattr_u32(tb[TCA_POLICE_AVRATE])); |
| |
| if ((tb[TCA_POLICE_PKTRATE64] && |
| RTA_PAYLOAD(tb[TCA_POLICE_PKTRATE64]) >= sizeof(pps64)) && |
| (tb[TCA_POLICE_PKTBURST64] && |
| RTA_PAYLOAD(tb[TCA_POLICE_PKTBURST64]) >= sizeof(ppsburst64))) { |
| pps64 = rta_getattr_u64(tb[TCA_POLICE_PKTRATE64]); |
| ppsburst64 = rta_getattr_u64(tb[TCA_POLICE_PKTBURST64]); |
| ppsburst64 = tc_calc_xmitsize(pps64, ppsburst64); |
| print_u64(PRINT_ANY, "pkts_rate", "pkts_rate %llu ", pps64); |
| print_u64(PRINT_ANY, "pkts_burst", "pkts_burst %llu ", ppsburst64); |
| } |
| |
| print_action_control(f, "action ", p->action, ""); |
| |
| if (tb[TCA_POLICE_RESULT]) { |
| __u32 action = rta_getattr_u32(tb[TCA_POLICE_RESULT]); |
| |
| print_action_control(f, "/", action, " "); |
| } else { |
| print_string(PRINT_FP, NULL, " ", NULL); |
| } |
| |
| print_size(PRINT_ANY, "overhead", "overhead %s ", p->rate.overhead); |
| linklayer = (p->rate.linklayer & TC_LINKLAYER_MASK); |
| if (linklayer > TC_LINKLAYER_ETHERNET || show_details) |
| print_string(PRINT_ANY, "linklayer", "linklayer %s ", |
| sprint_linklayer(linklayer, b2)); |
| print_nl(); |
| print_int(PRINT_ANY, "ref", "\tref %d ", p->refcnt); |
| print_int(PRINT_ANY, "bind", "bind %d ", p->bindcnt); |
| if (show_stats) { |
| if (tb[TCA_POLICE_TM]) { |
| struct tcf_t *tm = RTA_DATA(tb[TCA_POLICE_TM]); |
| |
| print_tm(f, tm); |
| } |
| } |
| print_nl(); |
| |
| |
| return 0; |
| } |
| |
| int tc_print_police(FILE *f, struct rtattr *arg) |
| { |
| return print_police(&police_action_util, f, arg); |
| } |