rdma: Properly mark RDMAtool license

[mirror_iproute2.git] / tc / f_fw.c

diff --git a/tc/f_fw.c b/tc/f_fw.c
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..adce2bdb7d8af353133af9a852b0494e2dd36e15 100644 (file)
--- a/tc/f_fw.c
+++ b/tc/f_fw.c
@@ -0,0 +1,170 @@
+/*
+ * f_fw.c              FW filter.
+ *
+ *             This program is free software; you can redistribute 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>
+ *
+ */
+
+#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> /* IFNAMSIZ */
+#include "utils.h"
+#include "tc_util.h"
+
+static void explain(void)
+{
+       fprintf(stderr,
+               "Usage: ... fw [ classid CLASSID ] [ indev DEV ] [ action ACTION_SPEC ]\n");
+       fprintf(stderr,
+               "       CLASSID := Push matching packets to the class identified by CLASSID with format X:Y\n");
+       fprintf(stderr,
+               "                  CLASSID is parsed as hexadecimal input.\n");
+       fprintf(stderr,
+               "       DEV := specify device for incoming device classification.\n");
+       fprintf(stderr,
+               "       ACTION_SPEC := Apply an action on matching packets.\n");
+       fprintf(stderr,
+               "       NOTE: handle is represented as HANDLE[/FWMASK].\n");
+       fprintf(stderr, "             FWMASK is 0xffffffff by default.\n");
+}
+
+static int fw_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 mask = 0;
+       int mask_set = 0;
+
+       if (handle) {
+               char *slash;
+
+               if ((slash = strchr(handle, '/')) != NULL)
+                       *slash = '\0';
+               if (get_u32(&t->tcm_handle, handle, 0)) {
+                       fprintf(stderr, "Illegal \"handle\"\n");
+                       return -1;
+               }
+               if (slash) {
+                       if (get_u32(&mask, slash+1, 0)) {
+                               fprintf(stderr, "Illegal \"handle\" mask\n");
+                               return -1;
+                       }
+                       mask_set = 1;
+               }
+       }
+
+       if (argc == 0)
+               return 0;
+
+       tail = addattr_nest(n, 4096, TCA_OPTIONS);
+
+       if (mask_set)
+               addattr32(n, MAX_MSG, TCA_FW_MASK, mask);
+
+       while (argc > 0) {
+               if (matches(*argv, "classid") == 0 ||
+                   matches(*argv, "flowid") == 0) {
+                       unsigned int handle;
+
+                       NEXT_ARG();
+                       if (get_tc_classid(&handle, *argv)) {
+                               fprintf(stderr, "Illegal \"classid\"\n");
+                               return -1;
+                       }
+                       addattr_l(n, 4096, TCA_FW_CLASSID, &handle, 4);
+               } else if (matches(*argv, "police") == 0) {
+                       NEXT_ARG();
+                       if (parse_police(&argc, &argv, TCA_FW_POLICE, n)) {
+                               fprintf(stderr, "Illegal \"police\"\n");
+                               return -1;
+                       }
+                       continue;
+               } else if (matches(*argv, "action") == 0) {
+                       NEXT_ARG();
+                       if (parse_action(&argc, &argv, TCA_FW_ACT, n)) {
+                               fprintf(stderr, "Illegal fw \"action\"\n");
+                               return -1;
+                       }
+                       continue;
+               } else if (strcmp(*argv, "indev") == 0) {
+                       char d[IFNAMSIZ+1] = {};
+
+                       argc--;
+                       argv++;
+                       if (argc < 1) {
+                               fprintf(stderr, "Illegal indev\n");
+                               return -1;
+                       }
+                       strncpy(d, *argv, sizeof(d) - 1);
+                       addattr_l(n, MAX_MSG, TCA_FW_INDEV, d, strlen(d) + 1);
+               } else if (strcmp(*argv, "help") == 0) {
+                       explain();
+                       return -1;
+               } else {
+                       fprintf(stderr, "What is \"%s\"?\n", *argv);
+                       explain();
+                       return -1;
+               }
+               argc--; argv++;
+       }
+       addattr_nest_end(n, tail);
+       return 0;
+}
+
+static int fw_print_opt(struct filter_util *qu, FILE *f, struct rtattr *opt, __u32 handle)
+{
+       struct rtattr *tb[TCA_FW_MAX+1];
+
+       if (opt == NULL)
+               return 0;
+
+       parse_rtattr_nested(tb, TCA_FW_MAX, opt);
+
+       if (handle || tb[TCA_FW_MASK]) {
+               __u32 mark = 0, mask = 0;
+
+               if (handle)
+                       mark = handle;
+               if (tb[TCA_FW_MASK] &&
+                   (mask = rta_getattr_u32(tb[TCA_FW_MASK])) != 0xFFFFFFFF)
+                       fprintf(f, "handle 0x%x/0x%x ", mark, mask);
+               else
+                       fprintf(f, "handle 0x%x ", handle);
+       }
+
+       if (tb[TCA_FW_CLASSID]) {
+               SPRINT_BUF(b1);
+               fprintf(f, "classid %s ", sprint_tc_classid(rta_getattr_u32(tb[TCA_FW_CLASSID]), b1));
+       }
+
+       if (tb[TCA_FW_POLICE])
+               tc_print_police(f, tb[TCA_FW_POLICE]);
+       if (tb[TCA_FW_INDEV]) {
+               struct rtattr *idev = tb[TCA_FW_INDEV];
+
+               fprintf(f, "input dev %s ", rta_getattr_str(idev));
+       }
+
+       if (tb[TCA_FW_ACT]) {
+               fprintf(f, "\n");
+               tc_print_action(f, tb[TCA_FW_ACT], 0);
+       }
+       return 0;
+}
+
+struct filter_util fw_filter_util = {
+       .id = "fw",
+       .parse_fopt = fw_parse_opt,
+       .print_fopt = fw_print_opt,
+};