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-rw-r--r--tc/m_gate.c537
1 files changed, 537 insertions, 0 deletions
diff --git a/tc/m_gate.c b/tc/m_gate.c
new file mode 100644
index 0000000..37afa42
--- /dev/null
+++ b/tc/m_gate.c
@@ -0,0 +1,537 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/* Copyright 2020 NXP */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <linux/if_ether.h>
+#include "utils.h"
+#include "rt_names.h"
+#include "tc_util.h"
+#include "list.h"
+#include <linux/tc_act/tc_gate.h>
+
+struct gate_entry {
+ struct list_head list;
+ uint8_t gate_state;
+ uint32_t interval;
+ int32_t ipv;
+ int32_t maxoctets;
+};
+
+static void explain(void)
+{
+ fprintf(stderr,
+ "Usage: gate [ priority PRIO-SPEC ] [ base-time BASE-TIME ]\n"
+ " [ cycle-time CYCLE-TIME ]\n"
+ " [ cycle-time-ext CYCLE-TIME-EXT ]\n"
+ " [ clockid CLOCKID ] [flags FLAGS]\n"
+ " [ sched-entry GATE0 INTERVAL [ INTERNAL-PRIO-VALUE MAX-OCTETS ] ]\n"
+ " [ sched-entry GATE1 INTERVAL [ INTERNAL-PRIO-VALUE MAX-OCTETS ] ]\n"
+ " ......\n"
+ " [ sched-entry GATEn INTERVAL [ INTERNAL-PRIO-VALUE MAX-OCTETS ] ]\n"
+ " [ CONTROL ]\n"
+ " GATEn := open | close\n"
+ " INTERVAL : nanoseconds period of gate slot\n"
+ " INTERNAL-PRIO-VALUE : internal priority decide which\n"
+ " rx queue number direct to.\n"
+ " default to be -1 which means wildcard.\n"
+ " MAX-OCTETS : maximum number of MSDU octets that are\n"
+ " permitted to pas the gate during the\n"
+ " specified TimeInterval.\n"
+ " default to be -1 which means wildcard.\n"
+ " CONTROL := pipe | drop | continue | pass |\n"
+ " goto chain <CHAIN_INDEX>\n");
+}
+
+static void usage(void)
+{
+ explain();
+ exit(-1);
+}
+
+static void explain_entry_format(void)
+{
+ fprintf(stderr, "Usage: sched-entry <open | close> <interval> [ <interval ipv> <octets max bytes> ]\n");
+}
+
+static int parse_gate(struct action_util *a, int *argc_p, char ***argv_p,
+ int tca_id, struct nlmsghdr *n);
+static int print_gate(struct action_util *au, FILE *f, struct rtattr *arg);
+
+struct action_util gate_action_util = {
+ .id = "gate",
+ .parse_aopt = parse_gate,
+ .print_aopt = print_gate,
+};
+
+static int get_gate_state(__u8 *val, const char *arg)
+{
+ if (!strcasecmp("OPEN", arg)) {
+ *val = 1;
+ return 0;
+ }
+
+ if (!strcasecmp("CLOSE", arg)) {
+ *val = 0;
+ return 0;
+ }
+
+ return -1;
+}
+
+static struct gate_entry *create_gate_entry(uint8_t gate_state,
+ uint32_t interval,
+ int32_t ipv,
+ int32_t maxoctets)
+{
+ struct gate_entry *e;
+
+ e = calloc(1, sizeof(*e));
+ if (!e)
+ return NULL;
+
+ e->gate_state = gate_state;
+ e->interval = interval;
+ e->ipv = ipv;
+ e->maxoctets = maxoctets;
+
+ return e;
+}
+
+static int add_gate_list(struct list_head *gate_entries, struct nlmsghdr *n)
+{
+ struct gate_entry *e;
+
+ list_for_each_entry(e, gate_entries, list) {
+ struct rtattr *a;
+
+ a = addattr_nest(n, 1024, TCA_GATE_ONE_ENTRY | NLA_F_NESTED);
+
+ if (e->gate_state)
+ addattr(n, MAX_MSG, TCA_GATE_ENTRY_GATE);
+
+ addattr_l(n, MAX_MSG, TCA_GATE_ENTRY_INTERVAL,
+ &e->interval, sizeof(e->interval));
+ addattr_l(n, MAX_MSG, TCA_GATE_ENTRY_IPV,
+ &e->ipv, sizeof(e->ipv));
+ addattr_l(n, MAX_MSG, TCA_GATE_ENTRY_MAX_OCTETS,
+ &e->maxoctets, sizeof(e->maxoctets));
+
+ addattr_nest_end(n, a);
+ }
+
+ return 0;
+}
+
+static void free_entries(struct list_head *gate_entries)
+{
+ struct gate_entry *e, *n;
+
+ list_for_each_entry_safe(e, n, gate_entries, list) {
+ list_del(&e->list);
+ free(e);
+ }
+}
+
+static int parse_gate(struct action_util *a, int *argc_p, char ***argv_p,
+ int tca_id, struct nlmsghdr *n)
+{
+ struct tc_gate parm = {.action = TC_ACT_PIPE};
+ struct list_head gate_entries;
+ __s32 clockid = CLOCKID_INVALID;
+ struct rtattr *tail, *nle;
+ char **argv = *argv_p;
+ int argc = *argc_p;
+ __s64 base_time = 0;
+ __s64 cycle_time = 0;
+ __s64 cycle_time_ext = 0;
+ int entry_num = 0;
+ char *invalidarg;
+ __u32 flags = 0;
+ int prio = -1;
+
+ int err;
+
+ if (matches(*argv, "gate") != 0)
+ return -1;
+
+ NEXT_ARG();
+ if (argc <= 0)
+ return -1;
+
+ INIT_LIST_HEAD(&gate_entries);
+
+ while (argc > 0) {
+ if (matches(*argv, "index") == 0) {
+ NEXT_ARG();
+ if (get_u32(&parm.index, *argv, 10)) {
+ invalidarg = "index";
+ goto err_arg;
+ }
+ } else if (matches(*argv, "priority") == 0) {
+ NEXT_ARG();
+ if (get_s32(&prio, *argv, 0)) {
+ invalidarg = "priority";
+ goto err_arg;
+ }
+ } else if (matches(*argv, "base-time") == 0) {
+ NEXT_ARG();
+ if (get_s64(&base_time, *argv, 10) &&
+ get_time64(&base_time, *argv)) {
+ invalidarg = "base-time";
+ goto err_arg;
+ }
+ } else if (matches(*argv, "cycle-time") == 0) {
+ NEXT_ARG();
+ if (get_s64(&cycle_time, *argv, 10) &&
+ get_time64(&cycle_time, *argv)) {
+ invalidarg = "cycle-time";
+ goto err_arg;
+ }
+ } else if (matches(*argv, "cycle-time-ext") == 0) {
+ NEXT_ARG();
+ if (get_s64(&cycle_time_ext, *argv, 10) &&
+ get_time64(&cycle_time_ext, *argv)) {
+ invalidarg = "cycle-time-ext";
+ goto err_arg;
+ }
+ } else if (matches(*argv, "clockid") == 0) {
+ NEXT_ARG();
+ if (get_clockid(&clockid, *argv)) {
+ invalidarg = "clockid";
+ goto err_arg;
+ }
+ } else if (matches(*argv, "flags") == 0) {
+ NEXT_ARG();
+ if (get_u32(&flags, *argv, 0)) {
+ invalidarg = "flags";
+ goto err_arg;
+ }
+ } else if (matches(*argv, "sched-entry") == 0) {
+ unsigned int maxoctets_uint = 0;
+ int32_t maxoctets = -1;
+ struct gate_entry *e;
+ uint8_t gate_state = 0;
+ __s64 interval_s64 = 0;
+ uint32_t interval = 0;
+ int32_t ipv = -1;
+
+ if (!NEXT_ARG_OK()) {
+ explain_entry_format();
+ fprintf(stderr, "\"sched-entry\" is incomplete\n");
+ free_entries(&gate_entries);
+ return -1;
+ }
+
+ NEXT_ARG();
+
+ if (get_gate_state(&gate_state, *argv)) {
+ explain_entry_format();
+ fprintf(stderr, "\"sched-entry\" is incomplete\n");
+ free_entries(&gate_entries);
+ return -1;
+ }
+
+ if (!NEXT_ARG_OK()) {
+ explain_entry_format();
+ fprintf(stderr, "\"sched-entry\" is incomplete\n");
+ free_entries(&gate_entries);
+ return -1;
+ }
+
+ NEXT_ARG();
+
+ if (get_u32(&interval, *argv, 0) &&
+ get_time64(&interval_s64, *argv)) {
+ explain_entry_format();
+ fprintf(stderr, "\"sched-entry\" is incomplete\n");
+ free_entries(&gate_entries);
+ return -1;
+ }
+
+ if (interval_s64 > UINT_MAX) {
+ fprintf(stderr, "\"interval\" is too large\n");
+ free_entries(&gate_entries);
+ return -1;
+ } else if (interval_s64) {
+ interval = interval_s64;
+ }
+
+ if (!NEXT_ARG_OK())
+ goto create_entry;
+
+ NEXT_ARG();
+
+ if (get_s32(&ipv, *argv, 0)) {
+ PREV_ARG();
+ goto create_entry;
+ }
+
+ if (!gate_state)
+ ipv = -1;
+
+ if (!NEXT_ARG_OK())
+ goto create_entry;
+
+ NEXT_ARG();
+
+ if (get_s32(&maxoctets, *argv, 0) &&
+ get_size(&maxoctets_uint, *argv))
+ PREV_ARG();
+
+ if (maxoctets_uint > INT_MAX) {
+ fprintf(stderr, "\"maxoctets\" is too large\n");
+ free_entries(&gate_entries);
+ return -1;
+ } else if (maxoctets_uint ) {
+ maxoctets = maxoctets_uint;
+ }
+
+ if (!gate_state)
+ maxoctets = -1;
+
+create_entry:
+ e = create_gate_entry(gate_state, interval,
+ ipv, maxoctets);
+ if (!e) {
+ fprintf(stderr, "gate: not enough memory\n");
+ free_entries(&gate_entries);
+ return -1;
+ }
+
+ list_add_tail(&e->list, &gate_entries);
+ entry_num++;
+ } else if (matches(*argv, "help") == 0) {
+ usage();
+ } else {
+ break;
+ }
+
+ argc--;
+ argv++;
+ }
+
+ parse_action_control_dflt(&argc, &argv, &parm.action,
+ false, TC_ACT_PIPE);
+
+ if (!entry_num && !parm.index) {
+ fprintf(stderr, "gate: must add at least one entry\n");
+ return -1;
+ }
+
+ tail = addattr_nest(n, MAX_MSG, tca_id | NLA_F_NESTED);
+ addattr_l(n, MAX_MSG, TCA_GATE_PARMS, &parm, sizeof(parm));
+
+ if (prio != -1)
+ addattr_l(n, MAX_MSG, TCA_GATE_PRIORITY, &prio, sizeof(prio));
+
+ if (flags)
+ addattr_l(n, MAX_MSG, TCA_GATE_FLAGS, &flags, sizeof(flags));
+
+ if (base_time)
+ addattr_l(n, MAX_MSG, TCA_GATE_BASE_TIME,
+ &base_time, sizeof(base_time));
+
+ if (cycle_time)
+ addattr_l(n, MAX_MSG, TCA_GATE_CYCLE_TIME,
+ &cycle_time, sizeof(cycle_time));
+
+ if (cycle_time_ext)
+ addattr_l(n, MAX_MSG, TCA_GATE_CYCLE_TIME_EXT,
+ &cycle_time_ext, sizeof(cycle_time_ext));
+
+ if (clockid != CLOCKID_INVALID)
+ addattr_l(n, MAX_MSG, TCA_GATE_CLOCKID,
+ &clockid, sizeof(clockid));
+
+ nle = addattr_nest(n, MAX_MSG, TCA_GATE_ENTRY_LIST | NLA_F_NESTED);
+ err = add_gate_list(&gate_entries, n);
+ if (err < 0) {
+ fprintf(stderr, "Could not add entries to netlink message\n");
+ free_entries(&gate_entries);
+ return -1;
+ }
+
+ addattr_nest_end(n, nle);
+ addattr_nest_end(n, tail);
+ free_entries(&gate_entries);
+ *argc_p = argc;
+ *argv_p = argv;
+
+ return 0;
+err_arg:
+ invarg(invalidarg, *argv);
+ free_entries(&gate_entries);
+
+ return -1;
+}
+
+static int print_gate_list(struct rtattr *list)
+{
+ struct rtattr *item;
+ int rem;
+
+ rem = RTA_PAYLOAD(list);
+
+ print_string(PRINT_FP, NULL, "%s", _SL_);
+ print_string(PRINT_FP, NULL, "\tschedule:%s", _SL_);
+ open_json_array(PRINT_JSON, "schedule");
+
+ for (item = RTA_DATA(list);
+ RTA_OK(item, rem);
+ item = RTA_NEXT(item, rem)) {
+ struct rtattr *tb[TCA_GATE_ENTRY_MAX + 1];
+ __u32 index = 0, interval = 0;
+ __u8 gate_state = 0;
+ __s32 ipv = -1, maxoctets = -1;
+ SPRINT_BUF(buf);
+
+ parse_rtattr_nested(tb, TCA_GATE_ENTRY_MAX, item);
+
+ if (tb[TCA_GATE_ENTRY_INDEX])
+ index = rta_getattr_u32(tb[TCA_GATE_ENTRY_INDEX]);
+
+ if (tb[TCA_GATE_ENTRY_GATE])
+ gate_state = 1;
+
+ if (tb[TCA_GATE_ENTRY_INTERVAL])
+ interval = rta_getattr_u32(tb[TCA_GATE_ENTRY_INTERVAL]);
+
+ if (tb[TCA_GATE_ENTRY_IPV])
+ ipv = rta_getattr_s32(tb[TCA_GATE_ENTRY_IPV]);
+
+ if (tb[TCA_GATE_ENTRY_MAX_OCTETS])
+ maxoctets = rta_getattr_s32(tb[TCA_GATE_ENTRY_MAX_OCTETS]);
+
+ open_json_object(NULL);
+ print_uint(PRINT_ANY, "number", "\t number %4u", index);
+ print_string(PRINT_ANY, "gate_state", "\tgate-state %s ",
+ gate_state ? "open" : "close");
+
+ print_uint(PRINT_JSON, "interval", NULL, interval);
+
+ memset(buf, 0, sizeof(buf));
+ print_string(PRINT_FP, NULL, "\tinterval %s",
+ sprint_time64(interval, buf));
+
+ if (ipv != -1) {
+ print_uint(PRINT_ANY, "ipv", "\t ipv %-10u", ipv);
+ } else {
+ print_int(PRINT_JSON, "ipv", NULL, ipv);
+ print_string(PRINT_FP, NULL, "\t ipv %s", "wildcard");
+ }
+
+ if (maxoctets != -1) {
+ print_size(PRINT_ANY, "max_octets", "\t max-octets %s",
+ maxoctets);
+ } else {
+ print_string(PRINT_FP, NULL,
+ "\t max-octets %s", "wildcard");
+ print_int(PRINT_JSON, "max_octets", NULL, maxoctets);
+ }
+
+ close_json_object();
+ print_string(PRINT_FP, NULL, "%s", _SL_);
+ }
+
+ close_json_array(PRINT_ANY, "");
+
+ return 0;
+}
+
+static int print_gate(struct action_util *au, FILE *f, struct rtattr *arg)
+{
+ struct tc_gate *parm;
+ struct rtattr *tb[TCA_GATE_MAX + 1];
+ __s32 clockid = CLOCKID_INVALID;
+ __s64 base_time = 0;
+ __s64 cycle_time = 0;
+ __s64 cycle_time_ext = 0;
+ SPRINT_BUF(buf);
+ int prio = -1;
+
+ if (arg == NULL)
+ return -1;
+
+ parse_rtattr_nested(tb, TCA_GATE_MAX, arg);
+
+ if (!tb[TCA_GATE_PARMS]) {
+ fprintf(stderr, "Missing gate parameters\n");
+ return -1;
+ }
+
+ print_string(PRINT_FP, NULL, "%s", "\n");
+
+ parm = RTA_DATA(tb[TCA_GATE_PARMS]);
+
+ if (tb[TCA_GATE_PRIORITY])
+ prio = rta_getattr_s32(tb[TCA_GATE_PRIORITY]);
+
+ if (prio != -1) {
+ print_int(PRINT_ANY, "priority", "\tpriority %-8d", prio);
+ } else {
+ print_string(PRINT_FP, NULL, "\tpriority %s", "wildcard");
+ print_int(PRINT_JSON, "priority", NULL, prio);
+ }
+
+ if (tb[TCA_GATE_CLOCKID])
+ clockid = rta_getattr_s32(tb[TCA_GATE_CLOCKID]);
+ print_string(PRINT_ANY, "clockid", "\tclockid %s",
+ get_clock_name(clockid));
+
+ if (tb[TCA_GATE_FLAGS]) {
+ __u32 flags;
+
+ flags = rta_getattr_u32(tb[TCA_GATE_FLAGS]);
+ print_0xhex(PRINT_ANY, "flags", "\tflags %#x", flags);
+ }
+
+ print_string(PRINT_FP, NULL, "%s", "\n");
+
+ if (tb[TCA_GATE_BASE_TIME])
+ base_time = rta_getattr_s64(tb[TCA_GATE_BASE_TIME]);
+
+ memset(buf, 0, sizeof(buf));
+ print_string(PRINT_FP, NULL, "\tbase-time %s",
+ sprint_time64(base_time, buf));
+ print_lluint(PRINT_JSON, "base_time", NULL, base_time);
+
+ if (tb[TCA_GATE_CYCLE_TIME])
+ cycle_time = rta_getattr_s64(tb[TCA_GATE_CYCLE_TIME]);
+
+ memset(buf, 0, sizeof(buf));
+ print_string(PRINT_FP, NULL,
+ "\tcycle-time %s", sprint_time64(cycle_time, buf));
+ print_lluint(PRINT_JSON, "cycle_time", NULL, cycle_time);
+
+ if (tb[TCA_GATE_CYCLE_TIME_EXT])
+ cycle_time_ext = rta_getattr_s64(tb[TCA_GATE_CYCLE_TIME_EXT]);
+
+ memset(buf, 0, sizeof(buf));
+ print_string(PRINT_FP, NULL, "\tcycle-time-ext %s",
+ sprint_time64(cycle_time_ext, buf));
+ print_lluint(PRINT_JSON, "cycle_time_ext", NULL, cycle_time_ext);
+
+ if (tb[TCA_GATE_ENTRY_LIST])
+ print_gate_list(tb[TCA_GATE_ENTRY_LIST]);
+
+ print_action_control(f, "\t", parm->action, "");
+
+ print_uint(PRINT_ANY, "index", "\n\t index %u", parm->index);
+ print_int(PRINT_ANY, "ref", " ref %d", parm->refcnt);
+ print_int(PRINT_ANY, "bind", " bind %d", parm->bindcnt);
+
+ if (show_stats) {
+ if (tb[TCA_GATE_TM]) {
+ struct tcf_t *tm = RTA_DATA(tb[TCA_GATE_TM]);
+
+ print_tm(f, tm);
+ }
+ }
+
+ print_string(PRINT_FP, NULL, "%s", "\n");
+
+ return 0;
+}
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