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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* f_matchall.c Match-all Classifier
*
* Authors: Jiri Pirko <jiri@mellanox.com>, Yotam Gigi <yotamg@mellanox.com>
*/
#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 <linux/if.h>
#include "utils.h"
#include "tc_util.h"
static void explain(void)
{
fprintf(stderr,
"Usage: ... matchall [skip_sw | skip_hw]\n"
" [ action ACTION_SPEC ] [ classid CLASSID ]\n"
"\n"
"Where: SELECTOR := SAMPLE SAMPLE ...\n"
" FILTERID := X:Y:Z\n"
" ACTION_SPEC := ... look at individual actions\n"
"\n"
"NOTE: CLASSID is parsed as hexadecimal input.\n");
}
static int matchall_parse_opt(struct filter_util *qu, char *handle,
int argc, char **argv, struct nlmsghdr *n)
{
struct tcmsg *t = NLMSG_DATA(n);
struct rtattr *tail;
__u32 flags = 0;
long h = 0;
if (handle) {
h = strtol(handle, NULL, 0);
if (h == LONG_MIN || h == LONG_MAX) {
fprintf(stderr, "Illegal handle \"%s\", must be numeric.\n",
handle);
return -1;
}
}
t->tcm_handle = h;
if (argc == 0)
return 0;
tail = (struct rtattr *)(((void *)n)+NLMSG_ALIGN(n->nlmsg_len));
addattr_l(n, MAX_MSG, TCA_OPTIONS, NULL, 0);
while (argc > 0) {
if (matches(*argv, "classid") == 0 ||
strcmp(*argv, "flowid") == 0) {
unsigned int classid;
NEXT_ARG();
if (get_tc_classid(&classid, *argv)) {
fprintf(stderr, "Illegal \"classid\"\n");
return -1;
}
addattr_l(n, MAX_MSG, TCA_MATCHALL_CLASSID, &classid, 4);
} else if (matches(*argv, "action") == 0) {
NEXT_ARG();
if (parse_action(&argc, &argv, TCA_MATCHALL_ACT, n)) {
fprintf(stderr, "Illegal \"action\"\n");
return -1;
}
continue;
} else if (strcmp(*argv, "skip_hw") == 0) {
NEXT_ARG();
flags |= TCA_CLS_FLAGS_SKIP_HW;
continue;
} else if (strcmp(*argv, "skip_sw") == 0) {
NEXT_ARG();
flags |= TCA_CLS_FLAGS_SKIP_SW;
continue;
} else if (strcmp(*argv, "help") == 0) {
explain();
return -1;
} else {
fprintf(stderr, "What is \"%s\"?\n", *argv);
explain();
return -1;
}
argc--; argv++;
}
if (flags) {
if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW |
TCA_CLS_FLAGS_SKIP_SW))) {
fprintf(stderr,
"skip_hw and skip_sw are mutually exclusive\n");
return -1;
}
addattr_l(n, MAX_MSG, TCA_MATCHALL_FLAGS, &flags, 4);
}
tail->rta_len = (((void *)n)+n->nlmsg_len) - (void *)tail;
return 0;
}
static int matchall_print_opt(struct filter_util *qu, FILE *f,
struct rtattr *opt, __u32 handle)
{
struct rtattr *tb[TCA_MATCHALL_MAX+1];
struct tc_matchall_pcnt *pf = NULL;
if (opt == NULL)
return 0;
parse_rtattr_nested(tb, TCA_MATCHALL_MAX, opt);
if (handle)
print_uint(PRINT_ANY, "handle", "handle 0x%x ", handle);
if (tb[TCA_MATCHALL_CLASSID]) {
SPRINT_BUF(b1);
print_string(PRINT_ANY, "flowid", "flowid %s ",
sprint_tc_classid(rta_getattr_u32(tb[TCA_MATCHALL_CLASSID]), b1));
}
if (tb[TCA_MATCHALL_FLAGS]) {
__u32 flags = rta_getattr_u32(tb[TCA_MATCHALL_FLAGS]);
if (flags & TCA_CLS_FLAGS_SKIP_HW)
print_bool(PRINT_ANY, "skip_hw", "\n skip_hw", true);
if (flags & TCA_CLS_FLAGS_SKIP_SW)
print_bool(PRINT_ANY, "skip_sw", "\n skip_sw", true);
if (flags & TCA_CLS_FLAGS_IN_HW)
print_bool(PRINT_ANY, "in_hw", "\n in_hw", true);
else if (flags & TCA_CLS_FLAGS_NOT_IN_HW)
print_bool(PRINT_ANY, "not_in_hw", "\n not_in_hw", true);
}
if (tb[TCA_MATCHALL_PCNT]) {
if (RTA_PAYLOAD(tb[TCA_MATCHALL_PCNT]) < sizeof(*pf)) {
print_string(PRINT_FP, NULL, "Broken perf counters\n", NULL);
return -1;
}
pf = RTA_DATA(tb[TCA_MATCHALL_PCNT]);
}
if (show_stats && NULL != pf)
print_u64(PRINT_ANY, "rule_hit", " (rule hit %llu)",
(unsigned long long) pf->rhit);
if (tb[TCA_MATCHALL_ACT])
tc_print_action(f, tb[TCA_MATCHALL_ACT], 0);
return 0;
}
struct filter_util matchall_filter_util = {
.id = "matchall",
.parse_fopt = matchall_parse_opt,
.print_fopt = matchall_print_opt,
};
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