/* * f_matchall.c Match-all Classifier * * This program is free software; you can distribute 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: Jiri Pirko , Yotam Gigi * */ #include #include #include #include #include #include #include #include #include #include #include "utils.h" #include "tc_util.h" static void explain(void) { fprintf(stderr, "Usage: ... matchall [skip_sw | skip_hw]\n"); fprintf(stderr, " [ action ACTION_SPEC ] [ classid CLASSID ]\n"); fprintf(stderr, "\n"); fprintf(stderr, "Where: SELECTOR := SAMPLE SAMPLE ...\n"); fprintf(stderr, " FILTERID := X:Y:Z\n"); fprintf(stderr, " ACTION_SPEC := ... look at individual actions\n"); fprintf(stderr, "\nNOTE: 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 handle; NEXT_ARG(); if (get_tc_classid(&handle, *argv)) { fprintf(stderr, "Illegal \"classid\"\n"); return -1; } addattr_l(n, MAX_MSG, TCA_MATCHALL_CLASSID, &handle, 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]; if (opt == NULL) return 0; parse_rtattr_nested(tb, TCA_MATCHALL_MAX, opt); if (handle) fprintf(f, "handle 0x%x ", handle); if (tb[TCA_MATCHALL_CLASSID]) { SPRINT_BUF(b1); fprintf(f, "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) fprintf(f, "\n skip_hw"); if (flags & TCA_CLS_FLAGS_SKIP_SW) fprintf(f, "\n skip_sw"); if (flags & TCA_CLS_FLAGS_IN_HW) fprintf(f, "\n in_hw"); else if (flags & TCA_CLS_FLAGS_NOT_IN_HW) fprintf(f, "\n not_in_hw"); } 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, };