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9e71352581
dump more than TCA_ACT_MAX_PRIO actions per batch when the kernel
supports it.
Introduced keyword "since" for time based filtering of actions.
Some example (we have 400 actions bound to 400 filters); at
installation time. Using updated when tc setting the time of
interest to 120 seconds earlier (we see 400 actions):
prompt$ hackedtc actions ls action gact since 120000| grep index | wc -l
400
go get some coffee and wait for > 120 seconds and try again:
prompt$ hackedtc actions ls action gact since 120000 | grep index | wc -l
0
Lets see a filter bound to one of these actions:
....
filter pref 10 u32
filter pref 10 u32 fh 800: ht divisor 1
filter pref 10 u32 fh 800::800 order 2048 key ht 800 bkt 0 flowid 1:10 (rule hit 2 success 1)
match 7f000002/ffffffff at 12 (success 1 )
action order 1: gact action pass
random type none pass val 0
index 23 ref 2 bind 1 installed 1145 sec used 802 sec
Action statistics:
Sent 84 bytes 1 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
...
that coffee took long, no? It was good.
Now lets ping -c 1 127.0.0.2, then run the actions again:
prompt$ hackedtc actions ls action gact since 120 | grep index | wc -l
1
More details please:
prompt$ hackedtc -s actions ls action gact since 120000
action order 0: gact action pass
random type none pass val 0
index 23 ref 2 bind 1 installed 1270 sec used 30 sec
Action statistics:
Sent 168 bytes 2 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
And the filter?
filter pref 10 u32
filter pref 10 u32 fh 800: ht divisor 1
filter pref 10 u32 fh 800::800 order 2048 key ht 800 bkt 0 flowid 1:10 (rule hit 4 success 2)
match 7f000002/ffffffff at 12 (success 2 )
action order 1: gact action pass
random type none pass val 0
index 23 ref 2 bind 1 installed 1324 sec used 84 sec
Action statistics:
Sent 168 bytes 2 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
115 lines
2.6 KiB
C
115 lines
2.6 KiB
C
/*
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* f_cgroup.c Control Group Classifier
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*
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* This program is free software; you can distribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Thomas Graf <tgraf@infradead.org>
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "utils.h"
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#include "tc_util.h"
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#include "m_ematch.h"
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static void explain(void)
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{
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fprintf(stderr, "Usage: ... cgroup [ match EMATCH_TREE ]\n");
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fprintf(stderr, " [ action ACTION_SPEC ]\n");
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}
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static int cgroup_parse_opt(struct filter_util *qu, char *handle,
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int argc, char **argv, struct nlmsghdr *n)
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{
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struct tcmsg *t = NLMSG_DATA(n);
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struct rtattr *tail;
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long h = 0;
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if (handle) {
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h = strtol(handle, NULL, 0);
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if (h == LONG_MIN || h == LONG_MAX) {
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fprintf(stderr, "Illegal handle \"%s\", must be numeric.\n",
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handle);
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return -1;
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}
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}
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t->tcm_handle = h;
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tail = (struct rtattr *)(((void *)n)+NLMSG_ALIGN(n->nlmsg_len));
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addattr_l(n, MAX_MSG, TCA_OPTIONS, NULL, 0);
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while (argc > 0) {
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if (matches(*argv, "match") == 0) {
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NEXT_ARG();
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if (parse_ematch(&argc, &argv, TCA_CGROUP_EMATCHES, n)) {
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fprintf(stderr, "Illegal \"ematch\"\n");
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return -1;
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}
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continue;
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} else if (matches(*argv, "action") == 0) {
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NEXT_ARG();
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if (parse_action(&argc, &argv, TCA_CGROUP_ACT, n)) {
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fprintf(stderr, "Illegal \"action\"\n");
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return -1;
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}
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continue;
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} else if (matches(*argv, "police") == 0) {
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NEXT_ARG();
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if (parse_police(&argc, &argv, TCA_CGROUP_POLICE, n)) {
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fprintf(stderr, "Illegal \"police\"\n");
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return -1;
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}
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continue;
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} else if (strcmp(*argv, "help") == 0) {
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explain();
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return -1;
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} else {
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fprintf(stderr, "What is \"%s\"?\n", *argv);
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explain();
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return -1;
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}
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}
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tail->rta_len = (((void *)n)+n->nlmsg_len) - (void *)tail;
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return 0;
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}
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static int cgroup_print_opt(struct filter_util *qu, FILE *f,
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struct rtattr *opt, __u32 handle)
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{
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struct rtattr *tb[TCA_CGROUP_MAX+1];
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if (opt == NULL)
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return 0;
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parse_rtattr_nested(tb, TCA_CGROUP_MAX, opt);
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if (handle)
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fprintf(f, "handle 0x%x ", handle);
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if (tb[TCA_CGROUP_EMATCHES])
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print_ematch(f, tb[TCA_CGROUP_EMATCHES]);
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if (tb[TCA_CGROUP_POLICE]) {
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fprintf(f, "\n");
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tc_print_police(f, tb[TCA_CGROUP_POLICE]);
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}
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if (tb[TCA_CGROUP_ACT])
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tc_print_action(f, tb[TCA_CGROUP_ACT], 0);
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return 0;
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}
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struct filter_util cgroup_filter_util = {
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.id = "cgroup",
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.parse_fopt = cgroup_parse_opt,
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.print_fopt = cgroup_print_opt,
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};
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