diff options
Diffstat (limited to 'tc/f_matchall.c')
| -rw-r--r-- | tc/f_matchall.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/tc/f_matchall.c b/tc/f_matchall.c new file mode 100644 index 0000000..38b68d7 --- /dev/null +++ b/tc/f_matchall.c @@ -0,0 +1,167 @@ +/* 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, +}; |