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zyxel-vmg8825_b50b-cfw/package/libs/libnl/patches-3.2.21/0001-add-support-for-fq_codel-qdisc.patch
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eeeck 81fec250f4 Initial dump from Zyxel
2026-04-17 18:33:03 +02:00

575 lines
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diff --git a/include/Makefile.am b/include/Makefile.am
index 1e07fdb..3f96690 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -54,6 +54,7 @@ nobase_libnlinclude_HEADERS = \
netlink/route/qdisc/red.h \
netlink/route/qdisc/sfq.h \
netlink/route/qdisc/tbf.h \
+ netlink/route/qdisc/fq_codel.h \
netlink/route/qdisc/plug.h \
netlink/route/addr.h \
netlink/route/class.h \
diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h
index 7ccc1fd..1c0727c 100644
--- a/include/linux/pkt_sched.h
+++ b/include/linux/pkt_sched.h
@@ -624,4 +624,57 @@ struct tc_qfq_stats {
__u32 lmax;
};
+/* FQ_CODEL */
+
+enum {
+ TCA_FQ_CODEL_UNSPEC,
+ TCA_FQ_CODEL_TARGET,
+ TCA_FQ_CODEL_LIMIT,
+ TCA_FQ_CODEL_INTERVAL,
+ TCA_FQ_CODEL_ECN,
+ TCA_FQ_CODEL_FLOWS,
+ TCA_FQ_CODEL_QUANTUM,
+ __TCA_FQ_CODEL_MAX
+};
+
+#define TCA_FQ_CODEL_MAX (__TCA_FQ_CODEL_MAX - 1)
+
+enum {
+ TCA_FQ_CODEL_XSTATS_QDISC,
+ TCA_FQ_CODEL_XSTATS_CLASS,
+};
+
+struct tc_fq_codel_qd_stats {
+ __u32 maxpacket; /* largest packet we've seen so far */
+ __u32 drop_overlimit; /* number of time max qdisc
+ * packet limit was hit
+ */
+ __u32 ecn_mark; /* number of packets we ECN marked
+ * instead of being dropped
+ */
+ __u32 new_flow_count; /* number of time packets
+ * created a 'new flow'
+ */
+ __u32 new_flows_len; /* count of flows in new list */
+ __u32 old_flows_len; /* count of flows in old list */
+};
+
+struct tc_fq_codel_cl_stats {
+ __s32 deficit;
+ __u32 ldelay; /* in-queue delay seen by most recently
+ * dequeued packet
+ */
+ __u32 count;
+ __u32 lastcount;
+ __u32 dropping;
+ __s32 drop_next;
+};
+
+struct tc_fq_codel_xstats {
+ __u32 type;
+ union {
+ struct tc_fq_codel_qd_stats qdisc_stats;
+ struct tc_fq_codel_cl_stats class_stats;
+ };
+};
#endif
diff --git a/include/netlink-private/types.h b/include/netlink-private/types.h
index 60a3bce..d6d056d 100644
--- a/include/netlink-private/types.h
+++ b/include/netlink-private/types.h
@@ -590,6 +590,17 @@ struct rtnl_tbf
uint32_t qt_mask;
};
+struct rtnl_fq_codel_qdisc
+{
+ uint32_t qcq_target;
+ uint32_t qcq_limit;
+ uint32_t qcq_interval;
+ uint32_t qcq_ecn;
+ uint32_t qcq_flows;
+ uint32_t qcq_quantum;
+ uint32_t qcq_mask;
+};
+
struct rtnl_sfq
{
uint32_t qs_quantum;
diff --git a/include/netlink/route/qdisc/fq_codel.h b/include/netlink/route/qdisc/fq_codel.h
new file mode 100644
index 0000000..da7c637
--- /dev/null
+++ b/include/netlink/route/qdisc/fq_codel.h
@@ -0,0 +1,41 @@
+/*
+ * netlink/route/sch/fq_codel.h Fair Queue CODEL Qdisc
+ */
+
+#ifndef NETLINK_FQ_CODEL_H_
+#define NETLINK_FQ_CODEL_H_
+
+#include <netlink/netlink.h>
+#include <netlink/route/tc.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Target Delay in usecs - Default 5 * 1000us */
+extern int rtnl_fq_codel_qdisc_get_target_usecs(struct rtnl_qdisc *);
+extern int rtnl_fq_codel_qdisc_set_target_usecs(struct rtnl_qdisc *,
+ uint32_t);
+/* Maximum number of enqueued packets before tail drop begins */
+extern int rtnl_fq_codel_qdisc_get_packet_limit(struct rtnl_qdisc *);
+extern int rtnl_fq_codel_qdisc_set_packet_limit(struct rtnl_qdisc *,
+ uint32_t);
+/* Moving window for calculating target delay in usecs - Default 100 * 1000us */
+extern int rtnl_fq_codel_qdisc_get_interval(struct rtnl_qdisc *);
+extern int rtnl_fq_codel_qdisc_set_interval(struct rtnl_qdisc *, uint32_t);
+/* Determines whether or not drops can be emulated via ECN - Default False */
+extern int rtnl_fq_codel_qdisc_get_ecn(struct rtnl_qdisc *);
+extern int rtnl_fq_codel_qdisc_set_ecn(struct rtnl_qdisc *, uint32_t);
+/* The maximum number of flows into which connections may be classified */
+extern int rtnl_fq_codel_qdisc_get_max_flow_count(struct rtnl_qdisc *);
+extern int rtnl_fq_codel_qdisc_set_max_flow_count(struct rtnl_qdisc *,
+ uint32_t);
+/* The quantum value for byte round robin between flows */
+extern int rtnl_fq_codel_qdisc_get_quantum(struct rtnl_qdisc *);
+extern int rtnl_fq_codel_qdisc_set_quantum(struct rtnl_qdisc *, uint32_t);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 677a89c..1dce098 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -75,6 +75,7 @@ libnl_route_3_la_SOURCES = \
route/qdisc/fifo.c route/qdisc/htb.c route/qdisc/netem.c \
route/qdisc/prio.c route/qdisc/red.c route/qdisc/sfq.c \
route/qdisc/tbf.c route/qdisc/plug.c \
+ route/qdisc/fq_codel.c \
\
fib_lookup/lookup.c fib_lookup/request.c \
\
diff --git a/lib/route/qdisc/fq_codel.c b/lib/route/qdisc/fq_codel.c
new file mode 100644
index 0000000..3c99887
--- /dev/null
+++ b/lib/route/qdisc/fq_codel.c
@@ -0,0 +1,413 @@
+/*
+ * lib/route/qdisc/fq_codel.c Fair Queue CODEL Qdisc
+ */
+
+/**
+ * @ingroup qdisc
+ * @defgroup qdisc_fq_codel Fair Queue with Per-Flow Controlled Delay AQM
+ * @{
+ */
+
+#include <netlink-private/netlink.h>
+#include <netlink-private/tc.h>
+#include <netlink/netlink.h>
+#include <netlink/cache.h>
+#include <netlink/utils.h>
+#include <netlink-private/route/tc-api.h>
+#include <netlink/route/qdisc.h>
+#include <netlink/route/link.h>
+#include <netlink/route/qdisc/fq_codel.h>
+
+/** @cond SKIP */
+#define SCH_FQ_CODEL_ATTR_TARGET 0x01
+#define SCH_FQ_CODEL_ATTR_LIMIT 0x02
+#define SCH_FQ_CODEL_ATTR_INTERVAL 0x04
+#define SCH_FQ_CODEL_ATTR_ECN 0x08
+#define SCH_FQ_CODEL_ATTR_FLOWS 0x10
+#define SCH_FQ_CODEL_ATTR_QUANTUM 0x20
+/** @endcond */
+
+static struct nla_policy fq_codel_policy[TCA_FQ_CODEL_MAX + 1] = {
+ [TCA_FQ_CODEL_TARGET] = { .type = NLA_U32 },
+ [TCA_FQ_CODEL_LIMIT] = { .type = NLA_U32 },
+ [TCA_FQ_CODEL_INTERVAL] = { .type = NLA_U32 },
+ [TCA_FQ_CODEL_ECN] = { .type = NLA_U32 },
+ [TCA_FQ_CODEL_FLOWS] = { .type = NLA_U32 },
+ [TCA_FQ_CODEL_QUANTUM] = { .type = NLA_U32 },
+};
+
+static int fq_codel_qdisc_msg_parser(struct rtnl_tc *tc, void *data)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel = data;
+ struct nlattr *tb[TCA_FQ_CODEL_MAX + 1];
+ int err;
+
+ err = tca_parse(tb, TCA_FQ_CODEL_MAX, tc, fq_codel_policy);
+ if (err < 0)
+ return err;
+
+ if (tb[TCA_FQ_CODEL_TARGET]) {
+ fq_codel->qcq_target = nla_get_u32(tb[TCA_FQ_CODEL_TARGET]);
+ fq_codel->qcq_mask |= SCH_FQ_CODEL_ATTR_TARGET;
+ }
+
+ if (tb[TCA_FQ_CODEL_LIMIT]) {
+ fq_codel->qcq_limit = nla_get_u32(tb[TCA_FQ_CODEL_LIMIT]);
+ fq_codel->qcq_mask |= SCH_FQ_CODEL_ATTR_LIMIT;
+ }
+
+ if (tb[TCA_FQ_CODEL_INTERVAL]) {
+ fq_codel->qcq_interval = nla_get_u32(tb[TCA_FQ_CODEL_INTERVAL]);
+ fq_codel->qcq_mask |= SCH_FQ_CODEL_ATTR_INTERVAL;
+ }
+
+ if (tb[TCA_FQ_CODEL_ECN]) {
+ fq_codel->qcq_ecn = !!nla_get_u32(tb[TCA_FQ_CODEL_ECN]);
+ fq_codel->qcq_mask |= SCH_FQ_CODEL_ATTR_ECN;
+ }
+
+ if (tb[TCA_FQ_CODEL_FLOWS]) {
+ fq_codel->qcq_flows = nla_get_u32(tb[TCA_FQ_CODEL_FLOWS]);
+ fq_codel->qcq_mask |= SCH_FQ_CODEL_ATTR_FLOWS;
+ }
+
+ if (tb[TCA_FQ_CODEL_QUANTUM]) {
+ fq_codel->qcq_quantum = nla_get_u32(tb[TCA_FQ_CODEL_QUANTUM]);
+ fq_codel->qcq_mask |= SCH_FQ_CODEL_ATTR_QUANTUM;
+ }
+
+ return 0;
+}
+
+static void fq_codel_qdisc_dump_line(struct rtnl_tc *tc, void *data,
+ struct nl_dump_params *p)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel = data;
+
+ if (fq_codel && (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_TARGET))
+ nl_dump(p, " target %u usecs", fq_codel->qcq_target);
+
+ if (fq_codel && (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_FLOWS))
+ nl_dump(p, " max_flows %u", fq_codel->qcq_flows);
+}
+
+static void fq_codel_qdisc_dump_details(struct rtnl_tc *tc, void *data,
+ struct nl_dump_params *p)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel = data;
+
+ if (!fq_codel)
+ return;
+
+ if (fq_codel && (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_LIMIT))
+ nl_dump(p, " limit %u packets", fq_codel->qcq_limit);
+
+ if (fq_codel && (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_INTERVAL))
+ nl_dump(p, " interval %u usecs", fq_codel->qcq_limit);
+
+ if (fq_codel && (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_ECN))
+ nl_dump(p, " ecn %s", fq_codel->qcq_ecn ? "enable" : "disable");
+
+ if (fq_codel && (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_QUANTUM))
+ nl_dump(p, " quantum %u bytes", fq_codel->qcq_quantum);
+}
+
+static int fq_codel_qdisc_msg_fill(struct rtnl_tc *tc, void *data,
+ struct nl_msg *msg)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel = data;
+
+ if (!fq_codel)
+ return 0;
+
+ if (fq_codel && (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_TARGET))
+ NLA_PUT_U32(msg, TCA_FQ_CODEL_TARGET, fq_codel->qcq_target);
+
+ if (fq_codel && (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_LIMIT))
+ NLA_PUT_U32(msg, TCA_FQ_CODEL_LIMIT, fq_codel->qcq_limit);
+
+ if (fq_codel && (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_INTERVAL))
+ NLA_PUT_U32(msg, TCA_FQ_CODEL_INTERVAL, fq_codel->qcq_interval);
+
+ if (fq_codel && (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_ECN))
+ NLA_PUT_U32(msg, TCA_FQ_CODEL_ECN, fq_codel->qcq_ecn);
+
+ if (fq_codel && (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_FLOWS))
+ NLA_PUT_U32(msg, TCA_FQ_CODEL_FLOWS, fq_codel->qcq_flows);
+
+ if (fq_codel && (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_QUANTUM))
+ NLA_PUT_U32(msg, TCA_FQ_CODEL_QUANTUM, fq_codel->qcq_quantum);
+
+ return 0;
+
+nla_put_failure:
+ return -NLE_MSGSIZE;
+}
+
+/**
+ * @name Qdisc Attribute Access
+ * @{
+ */
+
+/**
+ * Get target delay for FQ_CODEL qdisc.
+ * @arg qdisc FQ_CODEL qdisc.
+ * @return Target delay in microseconds, or a negative error code.
+ */
+int rtnl_fq_codel_qdisc_get_target_usecs(struct rtnl_qdisc *qdisc)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel;
+
+ if (!(fq_codel = rtnl_tc_data(TC_CAST(qdisc))))
+ return -NLE_NOMEM;
+
+ if (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_TARGET)
+ return fq_codel->qcq_target;
+ else
+ return -NLE_NOATTR;
+}
+
+/**
+ * Sets the target delay for FQ_CODEL qdisc.
+ * @arg qdisc FQ_CODEL qdisc to be modified.
+ * @arg target_usecs Target delay in miscroseconds.
+ * @return 0 on success, or a negative error code.
+ */
+int rtnl_fq_codel_qdisc_set_target_usecs(struct rtnl_qdisc *qdisc,
+ uint32_t target_usecs)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel;
+
+ if (!(fq_codel = rtnl_tc_data(TC_CAST(qdisc))))
+ return -NLE_NOMEM;
+
+ fq_codel->qcq_target = target_usecs;
+ fq_codel->qcq_mask |= SCH_FQ_CODEL_ATTR_TARGET;
+
+ return 0;
+}
+
+/**
+ * Get maximum number of enqueued packets before tail drop occurs.
+ * @arg qdisc FQ_CODEL qdisc.
+ * @return Maximum number of enqueued packets, or a negative error code.
+ */
+int rtnl_fq_codel_qdisc_get_packet_limit(struct rtnl_qdisc *qdisc)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel;
+
+ if (!(fq_codel = rtnl_tc_data(TC_CAST(qdisc))))
+ return -NLE_NOMEM;
+
+ if (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_LIMIT)
+ return fq_codel->qcq_limit;
+ else
+ return -NLE_NOATTR;
+}
+
+/**
+ * Sets the maximum number of queued packets for FQ_CODEL qdisc.
+ * @arg qdisc FQ_CODEL qdisc to be modified.
+ * @arg limit Maximum number of queued packets before tail drop starts.
+ * @return 0 on success, or a negative error code.
+ */
+int rtnl_fq_codel_qdisc_set_packet_limit(struct rtnl_qdisc *qdisc,
+ uint32_t max_packets)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel;
+
+ if (!(fq_codel = rtnl_tc_data(TC_CAST(qdisc))))
+ return -NLE_NOMEM;
+
+ fq_codel->qcq_limit = max_packets;
+ fq_codel->qcq_mask |= SCH_FQ_CODEL_ATTR_LIMIT;
+
+ return 0;
+}
+
+
+/**
+ * Get width of the moving time window for calculating delay, in microseconds.
+ * @arg qdisc FQ_CODEL qdisc.
+ * @return Width of the moving window in microseconds, or a negative error code.
+ */
+int rtnl_fq_codel_qdisc_get_interval(struct rtnl_qdisc *qdisc)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel;
+
+ if (!(fq_codel = rtnl_tc_data(TC_CAST(qdisc))))
+ return -NLE_NOMEM;
+
+ if (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_INTERVAL)
+ return fq_codel->qcq_interval;
+ else
+ return -NLE_NOATTR;
+}
+
+/**
+ * Sets the width of the moving window over which the delay is calculated.
+ * @arg qdisc FQ_CODEL qdisc to be modified.
+ * @arg window_usecs Moving window width in microseconds
+ * @return 0 on success, or a negative error code.
+ */
+int rtnl_fq_codel_qdisc_set_interval(struct rtnl_qdisc *qdisc,
+ uint32_t window_usecs)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel;
+
+ if (!(fq_codel = rtnl_tc_data(TC_CAST(qdisc))))
+ return -NLE_NOMEM;
+
+ fq_codel->qcq_interval = window_usecs;
+ fq_codel->qcq_mask |= SCH_FQ_CODEL_ATTR_INTERVAL;
+
+ return 0;
+}
+
+
+/**
+ * Get ECN for FQ_CODEL qdisc. If this is set, FQ_CODEL will mark packets with
+ * ECN rather than dropping them, where it is possible.
+ * @arg qdisc FQ_CODEL qdisc.
+ * @return 1 if ECN marking instead of dropping is enabled, 0 if it is disabled,
+ * or a negative error code.
+ */
+int rtnl_fq_codel_qdisc_get_ecn(struct rtnl_qdisc *qdisc)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel;
+
+ if (!(fq_codel = rtnl_tc_data(TC_CAST(qdisc))))
+ return -NLE_NOMEM;
+
+ if (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_ECN)
+ return !!(fq_codel->qcq_ecn);
+ else
+ return -NLE_NOATTR;
+}
+
+/**
+ * Sets the target delay for FQ_CODEL qdisc.
+ * @arg qdisc FQ_CODEL qdisc to be modified.
+ * @arg ecn 0 indicates ECN marking instead of dropping is disabled,
+ * and 1 indicates that ECN marking instead of dropping is enabled.
+ * @return 0 on success, or a negative error code.
+ */
+int rtnl_fq_codel_qdisc_set_ecn(struct rtnl_qdisc *qdisc, uint32_t ecn)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel;
+
+ if (!(fq_codel = rtnl_tc_data(TC_CAST(qdisc))))
+ return -NLE_NOMEM;
+
+ fq_codel->qcq_ecn = !!(ecn);
+ fq_codel->qcq_mask |= SCH_FQ_CODEL_ATTR_ECN;
+
+ return 0;
+}
+
+/**
+ * Get maximum number of flows for FQ_CODEL qdisc. This is the number of
+ * flows into which connections may be classified.
+ * @arg qdisc FQ_CODEL qdisc.
+ * @return Maximum number of flows for qdisc, or a negative error code.
+ */
+int rtnl_fq_codel_qdisc_get_max_flow_count(struct rtnl_qdisc *qdisc)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel;
+
+ if (!(fq_codel = rtnl_tc_data(TC_CAST(qdisc))))
+ return -NLE_NOMEM;
+
+ if (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_FLOWS)
+ return fq_codel->qcq_flows;
+ else
+ return -NLE_NOATTR;
+}
+
+/**
+ * Set the maximum number of flows for FQ_CODEL qdisc. This is the number of
+ * flows into which connections may be classified.
+ * @arg qdisc FQ_CODEL qdisc to be modified.
+ * @arg ecn New maximum number of flows. This must be greater than
+ * 0, and less than 65536.
+ * @return 0 on success, or a negative error code.
+ */
+int rtnl_fq_codel_qdisc_set_max_flow_count(struct rtnl_qdisc *qdisc,
+ uint32_t max_flows)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel;
+
+ if (!(fq_codel = rtnl_tc_data(TC_CAST(qdisc))))
+ return -NLE_NOMEM;
+
+ fq_codel->qcq_flows = max_flows;
+ fq_codel->qcq_mask |= SCH_FQ_CODEL_ATTR_FLOWS;
+
+ return 0;
+}
+
+/**
+ * Get the quantum for round robin between the active flows.
+ * @arg qdisc FQ_CODEL qdisc.
+ * @return The current quantum in bytes each flow receives during round robin.
+ */
+int rtnl_fq_codel_qdisc_get_quantum(struct rtnl_qdisc *qdisc)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel;
+
+ if (!(fq_codel = rtnl_tc_data(TC_CAST(qdisc))))
+ return -NLE_NOMEM;
+
+ if (fq_codel->qcq_mask & SCH_FQ_CODEL_ATTR_QUANTUM)
+ return fq_codel->qcq_quantum;
+ else
+ return -NLE_NOATTR;
+}
+
+/**
+ * Set the quantum for round robin between the active flows.
+ * @arg qdisc FQ_CODEL qdisc to be modified.
+ * @arg quantum Set the number of bytes each flow may transmit before
+ * allowing the next flow to transmit during round robin between active flows.
+ * If this number is < 256, it will be set to 256.
+ * @return 0 on success, or a negative error code.
+ */
+int rtnl_fq_codel_qdisc_set_quantum(struct rtnl_qdisc *qdisc,
+ uint32_t quantum)
+{
+ struct rtnl_fq_codel_qdisc *fq_codel;
+
+ if (!(fq_codel = rtnl_tc_data(TC_CAST(qdisc))))
+ return -NLE_NOMEM;
+
+ fq_codel->qcq_quantum = quantum;
+ fq_codel->qcq_mask |= SCH_FQ_CODEL_ATTR_QUANTUM;
+
+ return 0;
+}
+
+/** @} */
+
+static struct rtnl_tc_ops fq_codel_qdisc_ops = {
+ .to_kind = "fq_codel",
+ .to_type = RTNL_TC_TYPE_QDISC,
+ .to_size = sizeof(struct rtnl_fq_codel_qdisc),
+ .to_msg_parser = fq_codel_qdisc_msg_parser,
+ .to_dump = {
+ [NL_DUMP_LINE] = fq_codel_qdisc_dump_line,
+ [NL_DUMP_DETAILS] = fq_codel_qdisc_dump_details,
+ },
+ .to_msg_fill = fq_codel_qdisc_msg_fill,
+};
+
+static void __init fq_codel_init(void)
+{
+ rtnl_tc_register(&fq_codel_qdisc_ops);
+}
+
+static void __exit fq_codel_exit(void)
+{
+ rtnl_tc_unregister(&fq_codel_qdisc_ops);
+}
+
+/** @} */
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