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openwrtv4/package/network/utils/iproute2/patches/950-add-cake-to-tc.patch
Kevin Darbyshire-Bryant a9940ca2d7 iproute2: cake: support new operating modes 
There has been recent significant activity with the cake qdisc of late
Some of that effort is related to upstreaming to kernel & iproute2
mainline but we're not quite there yet.  This commit teaches tc how to
activate and interprete the latest cake operating modes, namely:

ingress mode: Instead of only counting packets that make it past the
shaper, include packets we've decided to drop as well, since they did
arrive with us on the link and took link capacity.
This mode is more suitable for shaping the ingress of a link
(e.g. from ISP) rather than the more normal egress.

ack-filter/ack-filter-aggressive: Filter excessive TCP ACKS.  Useful in
highly assymetric links (downstream v upstream capacity) where the
majority of upstream link capacity is occupied with ACKS for downstream
traffic.

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
2017-12-15 23:54:51 +01:00

850 lines
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--- a/include/uapi/linux/pkt_sched.h
+++ b/include/uapi/linux/pkt_sched.h
@@ -872,4 +872,63 @@ struct tc_pie_xstats {
__u32 maxq; /* maximum queue size */
__u32 ecn_mark; /* packets marked with ecn*/
};
+
+/* CAKE */
+enum {
+ TCA_CAKE_UNSPEC,
+ TCA_CAKE_BASE_RATE,
+ TCA_CAKE_DIFFSERV_MODE,
+ TCA_CAKE_ATM,
+ TCA_CAKE_FLOW_MODE,
+ TCA_CAKE_OVERHEAD,
+ TCA_CAKE_RTT,
+ TCA_CAKE_TARGET,
+ TCA_CAKE_AUTORATE,
+ TCA_CAKE_MEMORY,
+ TCA_CAKE_NAT,
+ TCA_CAKE_ETHERNET,
+ TCA_CAKE_WASH,
+ TCA_CAKE_MPU,
+ TCA_CAKE_INGRESS,
+ TCA_CAKE_ACK_FILTER,
+ __TCA_CAKE_MAX
+};
+#define TCA_CAKE_MAX (__TCA_CAKE_MAX - 1)
+
+struct tc_cake_traffic_stats {
+ __u32 packets;
+ __u32 link_ms;
+ __u64 bytes;
+};
+
+#define TC_CAKE_MAX_TINS (8)
+struct tc_cake_xstats {
+ __u16 version; /* == 5, increments when struct extended */
+ __u8 max_tins; /* == TC_CAKE_MAX_TINS */
+ __u8 tin_cnt; /* <= TC_CAKE_MAX_TINS */
+
+ __u32 threshold_rate [TC_CAKE_MAX_TINS];
+ __u32 target_us [TC_CAKE_MAX_TINS];
+ struct tc_cake_traffic_stats sent [TC_CAKE_MAX_TINS];
+ struct tc_cake_traffic_stats dropped [TC_CAKE_MAX_TINS];
+ struct tc_cake_traffic_stats ecn_marked[TC_CAKE_MAX_TINS];
+ struct tc_cake_traffic_stats backlog [TC_CAKE_MAX_TINS];
+ __u32 interval_us [TC_CAKE_MAX_TINS];
+ __u32 way_indirect_hits[TC_CAKE_MAX_TINS];
+ __u32 way_misses [TC_CAKE_MAX_TINS];
+ __u32 way_collisions [TC_CAKE_MAX_TINS];
+ __u32 peak_delay_us [TC_CAKE_MAX_TINS]; /* ~= bulk flow delay */
+ __u32 avge_delay_us [TC_CAKE_MAX_TINS];
+ __u32 base_delay_us [TC_CAKE_MAX_TINS]; /* ~= sparse flows delay */
+ __u16 sparse_flows [TC_CAKE_MAX_TINS];
+ __u16 bulk_flows [TC_CAKE_MAX_TINS];
+ __u16 unresponse_flows [TC_CAKE_MAX_TINS]; /* v4 - was u32 last_len */
+ __u16 spare [TC_CAKE_MAX_TINS]; /* v4 - split last_len */
+ __u32 max_skblen [TC_CAKE_MAX_TINS];
+ __u32 capacity_estimate; /* version 2 */
+ __u32 memory_limit; /* version 3 */
+ __u32 memory_used; /* version 3 */
+ struct tc_cake_traffic_stats ack_drops [TC_CAKE_MAX_TINS]; /* v5 */
+};
+
#endif
--- a/tc/Makefile
+++ b/tc/Makefile
@@ -65,6 +65,7 @@ TCMODULES += q_codel.o
TCMODULES += q_fq_codel.o
TCMODULES += q_fq.o
TCMODULES += q_pie.o
+TCMODULES += q_cake.o
TCMODULES += q_hhf.o
TCMODULES += q_clsact.o
TCMODULES += e_bpf.o
--- /dev/null
+++ b/tc/q_cake.c
@@ -0,0 +1,771 @@
+/*
+ * Common Applications Kept Enhanced -- CAKE
+ *
+ * Copyright (C) 2014-2015 Jonathan Morton <chromatix99@gmail.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The names of the authors may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, provided that this notice is retained in full, this
+ * software may be distributed under the terms of the GNU General
+ * Public License ("GPL") version 2, in which case the provisions of the
+ * GPL apply INSTEAD OF those given above.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+
+#include "utils.h"
+#include "tc_util.h"
+
+static void explain(void)
+{
+ fprintf(stderr,
+"Usage: ... cake [ bandwidth RATE | unlimited* | autorate_ingress ]\n"
+" [ rtt TIME | datacentre | lan | metro | regional |\n"
+" internet* | oceanic | satellite | interplanetary ]\n"
+" [ besteffort | diffserv8 | diffserv4 | diffserv-llt |\n"
+" diffserv3* ]\n"
+" [ flowblind | srchost | dsthost | hosts | flows |\n"
+" dual-srchost | dual-dsthost | triple-isolate* ]\n"
+" [ nat | nonat* ]\n"
+" [ wash | nowash * ]\n"
+" [ ack-filter | ack-filter-aggressive | no-ack-filter * ]\n"
+" [ memlimit LIMIT ]\n"
+" [ ptm | atm | noatm* ] [ overhead N | conservative | raw* ]\n"
+" [ mpu N ] [ ingress | egress* ]\n"
+" (* marks defaults)\n");
+}
+
+static int cake_parse_opt(struct qdisc_util *qu, int argc, char **argv,
+ struct nlmsghdr *n)
+{
+ int unlimited = 0;
+ unsigned bandwidth = 0;
+ unsigned interval = 0;
+ unsigned target = 0;
+ unsigned diffserv = 0;
+ unsigned memlimit = 0;
+ int overhead = 0;
+ bool overhead_set = false;
+ bool overhead_override = false;
+ int mpu = 0;
+ int flowmode = -1;
+ int nat = -1;
+ int atm = -1;
+ int autorate = -1;
+ int wash = -1;
+ int ingress = -1;
+ int ack_filter = -1;
+ struct rtattr *tail;
+
+ while (argc > 0) {
+ if (strcmp(*argv, "bandwidth") == 0) {
+ NEXT_ARG();
+ if (get_rate(&bandwidth, *argv)) {
+ fprintf(stderr, "Illegal \"bandwidth\"\n");
+ return -1;
+ }
+ unlimited = 0;
+ autorate = 0;
+ } else if (strcmp(*argv, "unlimited") == 0) {
+ bandwidth = 0;
+ unlimited = 1;
+ autorate = 0;
+ } else if (strcmp(*argv, "autorate_ingress") == 0) {
+ autorate = 1;
+
+ } else if (strcmp(*argv, "rtt") == 0) {
+ NEXT_ARG();
+ if (get_time(&interval, *argv)) {
+ fprintf(stderr, "Illegal \"rtt\"\n");
+ return -1;
+ }
+ target = interval / 20;
+ if(!target)
+ target = 1;
+ } else if (strcmp(*argv, "datacentre") == 0) {
+ interval = 100;
+ target = 5;
+ } else if (strcmp(*argv, "lan") == 0) {
+ interval = 1000;
+ target = 50;
+ } else if (strcmp(*argv, "metro") == 0) {
+ interval = 10000;
+ target = 500;
+ } else if (strcmp(*argv, "regional") == 0) {
+ interval = 30000;
+ target = 1500;
+ } else if (strcmp(*argv, "internet") == 0) {
+ interval = 100000;
+ target = 5000;
+ } else if (strcmp(*argv, "oceanic") == 0) {
+ interval = 300000;
+ target = 15000;
+ } else if (strcmp(*argv, "satellite") == 0) {
+ interval = 1000000;
+ target = 50000;
+ } else if (strcmp(*argv, "interplanetary") == 0) {
+ interval = 3600000000U;
+ target = 5000;
+
+ } else if (strcmp(*argv, "besteffort") == 0) {
+ diffserv = 1;
+ } else if (strcmp(*argv, "precedence") == 0) {
+ diffserv = 2;
+ } else if (strcmp(*argv, "diffserv8") == 0) {
+ diffserv = 3;
+ } else if (strcmp(*argv, "diffserv4") == 0) {
+ diffserv = 4;
+ } else if (strcmp(*argv, "diffserv") == 0) {
+ diffserv = 4;
+ } else if (strcmp(*argv, "diffserv-llt") == 0) {
+ diffserv = 5;
+ } else if (strcmp(*argv, "diffserv3") == 0) {
+ diffserv = 6;
+
+ } else if (strcmp(*argv, "nowash") == 0) {
+ wash = 0;
+ } else if (strcmp(*argv, "wash") == 0) {
+ wash = 1;
+
+ } else if (strcmp(*argv, "flowblind") == 0) {
+ flowmode = 0;
+ } else if (strcmp(*argv, "srchost") == 0) {
+ flowmode = 1;
+ } else if (strcmp(*argv, "dsthost") == 0) {
+ flowmode = 2;
+ } else if (strcmp(*argv, "hosts") == 0) {
+ flowmode = 3;
+ } else if (strcmp(*argv, "flows") == 0) {
+ flowmode = 4;
+ } else if (strcmp(*argv, "dual-srchost") == 0) {
+ flowmode = 5;
+ } else if (strcmp(*argv, "dual-dsthost") == 0) {
+ flowmode = 6;
+ } else if (strcmp(*argv, "triple-isolate") == 0) {
+ flowmode = 7;
+
+ } else if (strcmp(*argv, "nat") == 0) {
+ nat = 1;
+ } else if (strcmp(*argv, "nonat") == 0) {
+ nat = 0;
+
+ } else if (strcmp(*argv, "ptm") == 0) {
+ atm = 2;
+ } else if (strcmp(*argv, "atm") == 0) {
+ atm = 1;
+ } else if (strcmp(*argv, "noatm") == 0) {
+ atm = 0;
+
+ } else if (strcmp(*argv, "raw") == 0) {
+ atm = 0;
+ overhead = 0;
+ overhead_set = true;
+ overhead_override = true;
+ } else if (strcmp(*argv, "conservative") == 0) {
+ /*
+ * Deliberately over-estimate overhead:
+ * one whole ATM cell plus ATM framing.
+ * A safe choice if the actual overhead is unknown.
+ */
+ atm = 1;
+ overhead = 48;
+ overhead_set = true;
+
+ /* Various ADSL framing schemes, all over ATM cells */
+ } else if (strcmp(*argv, "ipoa-vcmux") == 0) {
+ atm = 1;
+ overhead += 8;
+ overhead_set = true;
+ } else if (strcmp(*argv, "ipoa-llcsnap") == 0) {
+ atm = 1;
+ overhead += 16;
+ overhead_set = true;
+ } else if (strcmp(*argv, "bridged-vcmux") == 0) {
+ atm = 1;
+ overhead += 24;
+ overhead_set = true;
+ } else if (strcmp(*argv, "bridged-llcsnap") == 0) {
+ atm = 1;
+ overhead += 32;
+ overhead_set = true;
+ } else if (strcmp(*argv, "pppoa-vcmux") == 0) {
+ atm = 1;
+ overhead += 10;
+ overhead_set = true;
+ } else if (strcmp(*argv, "pppoa-llc") == 0) {
+ atm = 1;
+ overhead += 14;
+ overhead_set = true;
+ } else if (strcmp(*argv, "pppoe-vcmux") == 0) {
+ atm = 1;
+ overhead += 32;
+ overhead_set = true;
+ } else if (strcmp(*argv, "pppoe-llcsnap") == 0) {
+ atm = 1;
+ overhead += 40;
+ overhead_set = true;
+
+ /* Typical VDSL2 framing schemes, both over PTM */
+ /* PTM has 64b/65b coding which absorbs some bandwidth */
+ } else if (strcmp(*argv, "pppoe-ptm") == 0) {
+ /* 2B PPP + 6B PPPoE + 6B dest MAC + 6B src MAC
+ * + 2B ethertype + 4B Frame Check Sequence
+ * + 1B Start of Frame (S) + 1B End of Frame (Ck)
+ * + 2B TC-CRC (PTM-FCS) = 30B
+ */
+ atm = 2;
+ overhead += 30;
+ overhead_set = true;
+ } else if (strcmp(*argv, "bridged-ptm") == 0) {
+ /* 6B dest MAC + 6B src MAC + 2B ethertype
+ * + 4B Frame Check Sequence
+ * + 1B Start of Frame (S) + 1B End of Frame (Ck)
+ * + 2B TC-CRC (PTM-FCS) = 22B
+ */
+ atm = 2;
+ overhead += 22;
+ overhead_set = true;
+
+ } else if (strcmp(*argv, "via-ethernet") == 0) {
+ /*
+ * We used to use this flag to manually compensate for
+ * Linux including the Ethernet header on Ethernet-type
+ * interfaces, but not on IP-type interfaces.
+ *
+ * It is no longer needed, because Cake now adjusts for
+ * that automatically, and is thus ignored.
+ *
+ * It would be deleted entirely, but it appears in the
+ * stats output when the automatic compensation is
+ * active.
+ */
+
+ } else if (strcmp(*argv, "total_overhead") == 0) {
+ /*
+ * This is the overhead cake accounts for; added here so
+ * that cake's "tc -s qdisc" output can be directly
+ * pasted into the tc command to instantate a new cake..
+ */
+ NEXT_ARG();
+
+ } else if (strcmp(*argv, "hard_header_len") == 0) {
+ /*
+ * This is the overhead the kernel automatically
+ * accounted for; added here so that cake's "tc -s
+ * qdisc" output can be directly pasted into the tc
+ * command to instantiate a new cake..
+ */
+ NEXT_ARG();
+
+ } else if (strcmp(*argv, "ethernet") == 0) {
+ /* ethernet pre-amble & interframe gap & FCS
+ * you may need to add vlan tag */
+ overhead += 38;
+ overhead_set = true;
+ mpu = 84;
+
+ /* Additional Ethernet-related overhead used by some ISPs */
+ } else if (strcmp(*argv, "ether-vlan") == 0) {
+ /* 802.1q VLAN tag - may be repeated */
+ overhead += 4;
+ overhead_set = true;
+
+ /*
+ * DOCSIS cable shapers account for Ethernet frame with FCS,
+ * but not interframe gap or preamble.
+ */
+ } else if (strcmp(*argv, "docsis") == 0) {
+ atm = 0;
+ overhead += 18;
+ overhead_set = true;
+ mpu = 64;
+
+ } else if (strcmp(*argv, "overhead") == 0) {
+ char* p = NULL;
+ NEXT_ARG();
+ overhead = strtol(*argv, &p, 10);
+ if(!p || *p || !*argv || overhead < -64 || overhead > 256) {
+ fprintf(stderr, "Illegal \"overhead\", valid range is -64 to 256\\n");
+ return -1;
+ }
+ overhead_set = true;
+
+ } else if (strcmp(*argv, "mpu") == 0) {
+ char* p = NULL;
+ NEXT_ARG();
+ mpu = strtol(*argv, &p, 10);
+ if(!p || *p || !*argv || mpu < 0 || mpu > 256) {
+ fprintf(stderr, "Illegal \"mpu\", valid range is 0 to 256\\n");
+ return -1;
+ }
+
+ } else if (strcmp(*argv, "ingress") == 0) {
+ ingress = 1;
+ } else if (strcmp(*argv, "egress") == 0) {
+ ingress = 0;
+
+ } else if (strcmp(*argv, "no-ack-filter") == 0) {
+ ack_filter = 0;
+ } else if (strcmp(*argv, "ack-filter") == 0) {
+ ack_filter = 0x0200;
+ } else if (strcmp(*argv, "ack-filter-aggressive") == 0) {
+ ack_filter = 0x0600;
+
+ } else if (strcmp(*argv, "memlimit") == 0) {
+ NEXT_ARG();
+ if(get_size(&memlimit, *argv)) {
+ fprintf(stderr, "Illegal value for \"memlimit\": \"%s\"\n", *argv);
+ return -1;
+ }
+
+ } else if (strcmp(*argv, "help") == 0) {
+ explain();
+ return -1;
+ } else {
+ fprintf(stderr, "What is \"%s\"?\n", *argv);
+ explain();
+ return -1;
+ }
+ argc--; argv++;
+ }
+
+ tail = NLMSG_TAIL(n);
+ addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
+ if (bandwidth || unlimited)
+ addattr_l(n, 1024, TCA_CAKE_BASE_RATE, &bandwidth, sizeof(bandwidth));
+ if (diffserv)
+ addattr_l(n, 1024, TCA_CAKE_DIFFSERV_MODE, &diffserv, sizeof(diffserv));
+ if (atm != -1)
+ addattr_l(n, 1024, TCA_CAKE_ATM, &atm, sizeof(atm));
+ if (flowmode != -1)
+ addattr_l(n, 1024, TCA_CAKE_FLOW_MODE, &flowmode, sizeof(flowmode));
+ if (overhead_set)
+ addattr_l(n, 1024, TCA_CAKE_OVERHEAD, &overhead, sizeof(overhead));
+ if (overhead_override) {
+ unsigned zero = 0;
+ addattr_l(n, 1024, TCA_CAKE_ETHERNET, &zero, sizeof(zero));
+ }
+ if (mpu > 0)
+ addattr_l(n, 1024, TCA_CAKE_MPU, &mpu, sizeof(mpu));
+ if (interval)
+ addattr_l(n, 1024, TCA_CAKE_RTT, &interval, sizeof(interval));
+ if (target)
+ addattr_l(n, 1024, TCA_CAKE_TARGET, &target, sizeof(target));
+ if (autorate != -1)
+ addattr_l(n, 1024, TCA_CAKE_AUTORATE, &autorate, sizeof(autorate));
+ if (memlimit)
+ addattr_l(n, 1024, TCA_CAKE_MEMORY, &memlimit, sizeof(memlimit));
+ if (nat != -1)
+ addattr_l(n, 1024, TCA_CAKE_NAT, &nat, sizeof(nat));
+ if (wash != -1)
+ addattr_l(n, 1024, TCA_CAKE_WASH, &wash, sizeof(wash));
+ if (ingress != -1)
+ addattr_l(n, 1024, TCA_CAKE_INGRESS, &ingress, sizeof(ingress));
+ if (ack_filter != -1)
+ addattr_l(n, 1024, TCA_CAKE_ACK_FILTER, &ack_filter, sizeof(ack_filter));
+
+ tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
+ return 0;
+}
+
+
+static int cake_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
+{
+ struct rtattr *tb[TCA_CAKE_MAX + 1];
+ unsigned bandwidth = 0;
+ unsigned diffserv = 0;
+ unsigned flowmode = 0;
+ unsigned interval = 0;
+ unsigned memlimit = 0;
+ int overhead = 0;
+ int ethernet = 0;
+ int mpu = 0;
+ int atm = 0;
+ int nat = 0;
+ int autorate = 0;
+ int wash = 0;
+ int ingress = 0;
+ int ack_filter = 0;
+ SPRINT_BUF(b1);
+ SPRINT_BUF(b2);
+
+ if (opt == NULL)
+ return 0;
+
+ parse_rtattr_nested(tb, TCA_CAKE_MAX, opt);
+
+ if (tb[TCA_CAKE_BASE_RATE] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_BASE_RATE]) >= sizeof(__u32)) {
+ bandwidth = rta_getattr_u32(tb[TCA_CAKE_BASE_RATE]);
+ if(bandwidth)
+ fprintf(f, "bandwidth %s ", sprint_rate(bandwidth, b1));
+ else
+ fprintf(f, "unlimited ");
+ }
+ if (tb[TCA_CAKE_AUTORATE] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_AUTORATE]) >= sizeof(__u32)) {
+ autorate = rta_getattr_u32(tb[TCA_CAKE_AUTORATE]);
+ if(autorate == 1)
+ fprintf(f, "autorate_ingress ");
+ else if(autorate)
+ fprintf(f, "(?autorate?) ");
+ }
+ if (tb[TCA_CAKE_DIFFSERV_MODE] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_DIFFSERV_MODE]) >= sizeof(__u32)) {
+ diffserv = rta_getattr_u32(tb[TCA_CAKE_DIFFSERV_MODE]);
+ switch(diffserv) {
+ case 1:
+ fprintf(f, "besteffort ");
+ break;
+ case 2:
+ fprintf(f, "precedence ");
+ break;
+ case 3:
+ fprintf(f, "diffserv8 ");
+ break;
+ case 4:
+ fprintf(f, "diffserv4 ");
+ break;
+ case 5:
+ fprintf(f, "diffserv-llt ");
+ break;
+ case 6:
+ fprintf(f, "diffserv3 ");
+ break;
+ default:
+ fprintf(f, "(?diffserv?) ");
+ break;
+ };
+ }
+ if (tb[TCA_CAKE_FLOW_MODE] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_FLOW_MODE]) >= sizeof(__u32)) {
+ flowmode = rta_getattr_u32(tb[TCA_CAKE_FLOW_MODE]);
+ nat = !!(flowmode & 64);
+ flowmode &= ~64;
+ switch(flowmode) {
+ case 0:
+ fprintf(f, "flowblind ");
+ break;
+ case 1:
+ fprintf(f, "srchost ");
+ break;
+ case 2:
+ fprintf(f, "dsthost ");
+ break;
+ case 3:
+ fprintf(f, "hosts ");
+ break;
+ case 4:
+ fprintf(f, "flows ");
+ break;
+ case 5:
+ fprintf(f, "dual-srchost ");
+ break;
+ case 6:
+ fprintf(f, "dual-dsthost ");
+ break;
+ case 7:
+ fprintf(f, "triple-isolate ");
+ break;
+ default:
+ fprintf(f, "(?flowmode?) ");
+ break;
+ };
+
+ if(nat)
+ fprintf(f, "nat ");
+ }
+ if (tb[TCA_CAKE_WASH] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_WASH]) >= sizeof(__u32)) {
+ wash = rta_getattr_u32(tb[TCA_CAKE_WASH]);
+ }
+ if (tb[TCA_CAKE_ATM] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_ATM]) >= sizeof(__u32)) {
+ atm = rta_getattr_u32(tb[TCA_CAKE_ATM]);
+ }
+ if (tb[TCA_CAKE_OVERHEAD] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_OVERHEAD]) >= sizeof(__u32)) {
+ overhead = rta_getattr_u32(tb[TCA_CAKE_OVERHEAD]);
+ }
+ if (tb[TCA_CAKE_MPU] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_MPU]) >= sizeof(__u32)) {
+ mpu = rta_getattr_u32(tb[TCA_CAKE_MPU]);
+ }
+ if (tb[TCA_CAKE_INGRESS] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_INGRESS]) >= sizeof(__u32)) {
+ ingress = rta_getattr_u32(tb[TCA_CAKE_INGRESS]);
+ }
+ if (tb[TCA_CAKE_ACK_FILTER] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_ACK_FILTER]) >= sizeof(__u32)) {
+ ack_filter = rta_getattr_u32(tb[TCA_CAKE_ACK_FILTER]);
+ }
+ if (tb[TCA_CAKE_ETHERNET] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_ETHERNET]) >= sizeof(__u32)) {
+ ethernet = rta_getattr_u32(tb[TCA_CAKE_ETHERNET]);
+ }
+ if (tb[TCA_CAKE_RTT] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_RTT]) >= sizeof(__u32)) {
+ interval = rta_getattr_u32(tb[TCA_CAKE_RTT]);
+ }
+
+ if (wash)
+ fprintf(f,"wash ");
+
+ if (ingress)
+ fprintf(f,"ingress ");
+
+ if (ack_filter == 0x0600)
+ fprintf(f,"ack-filter-aggressive ");
+ else if (ack_filter)
+ fprintf(f,"ack-filter ");
+
+ if (interval)
+ fprintf(f, "rtt %s ", sprint_time(interval, b2));
+
+ if (!atm && overhead == ethernet) {
+ fprintf(f, "raw ");
+ } else {
+ if (atm == 1)
+ fprintf(f, "atm ");
+ else if (atm == 2)
+ fprintf(f, "ptm ");
+ else
+ fprintf(f, "noatm ");
+
+ fprintf(f, "overhead %d ", overhead);
+
+ /* This is actually the *amount* of automatic compensation, but
+ * we only report its presence as a boolean for now.
+ */
+ if (ethernet)
+ fprintf(f, "via-ethernet ");
+ }
+
+ /* unconditionally report the overhead and hard_header_len overhead the
+ * kernel added automatically
+ */
+ fprintf(f, "total_overhead %d ", overhead);
+ fprintf(f, "hard_header_len %d ", ethernet);
+
+ if (mpu) {
+ fprintf(f, "mpu %d ", mpu);
+ }
+
+ if (memlimit)
+ fprintf(f, "memlimit %s", sprint_size(memlimit, b1));
+
+ return 0;
+}
+
+static int cake_print_xstats(struct qdisc_util *qu, FILE *f,
+ struct rtattr *xstats)
+{
+ /* fq_codel stats format borrowed */
+ struct tc_fq_codel_xstats *st;
+ struct tc_cake_xstats *stnc;
+ SPRINT_BUF(b1);
+ SPRINT_BUF(b2);
+
+ if (xstats == NULL)
+ return 0;
+
+ if (RTA_PAYLOAD(xstats) < sizeof(st->type))
+ return -1;
+
+ st = RTA_DATA(xstats);
+ stnc = RTA_DATA(xstats);
+
+ if (st->type == TCA_FQ_CODEL_XSTATS_QDISC && RTA_PAYLOAD(xstats) >= sizeof(*st)) {
+ fprintf(f, " maxpacket %u drop_overlimit %u new_flow_count %u ecn_mark %u",
+ st->qdisc_stats.maxpacket,
+ st->qdisc_stats.drop_overlimit,
+ st->qdisc_stats.new_flow_count,
+ st->qdisc_stats.ecn_mark);
+ fprintf(f, "\n new_flows_len %u old_flows_len %u",
+ st->qdisc_stats.new_flows_len,
+ st->qdisc_stats.old_flows_len);
+ } else if (st->type == TCA_FQ_CODEL_XSTATS_CLASS && RTA_PAYLOAD(xstats) >= sizeof(*st)) {
+ fprintf(f, " deficit %d count %u lastcount %u ldelay %s",
+ st->class_stats.deficit,
+ st->class_stats.count,
+ st->class_stats.lastcount,
+ sprint_time(st->class_stats.ldelay, b1));
+ if (st->class_stats.dropping) {
+ fprintf(f, " dropping");
+ if (st->class_stats.drop_next < 0)
+ fprintf(f, " drop_next -%s",
+ sprint_time(-st->class_stats.drop_next, b1));
+ else
+ fprintf(f, " drop_next %s",
+ sprint_time(st->class_stats.drop_next, b1));
+ }
+ } else if (stnc->version >= 1 && stnc->version < 0xFF
+ && stnc->max_tins == TC_CAKE_MAX_TINS
+ && RTA_PAYLOAD(xstats) >= offsetof(struct tc_cake_xstats, capacity_estimate))
+ {
+ int i;
+
+ if(stnc->version >= 3)
+ fprintf(f, " memory used: %s of %s\n", sprint_size(stnc->memory_used, b1), sprint_size(stnc->memory_limit, b2));
+
+ if(stnc->version >= 2)
+ fprintf(f, " capacity estimate: %s\n", sprint_rate(stnc->capacity_estimate, b1));
+
+ switch(stnc->tin_cnt) {
+ case 3:
+ fprintf(f, " Bulk Best Effort Voice\n");
+ break;
+
+ case 4:
+ fprintf(f, " Bulk Best Effort Video Voice\n");
+ break;
+
+ case 5:
+ fprintf(f, " Low Loss Best Effort Low Delay Bulk Net Control\n");
+ break;
+
+ default:
+ fprintf(f, " ");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " Tin %u", i);
+ fprintf(f, "\n");
+ };
+
+ fprintf(f, " thresh ");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12s", sprint_rate(stnc->threshold_rate[i], b1));
+ fprintf(f, "\n");
+
+ fprintf(f, " target ");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12s", sprint_time(stnc->target_us[i], b1));
+ fprintf(f, "\n");
+
+ fprintf(f, " interval");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12s", sprint_time(stnc->interval_us[i], b1));
+ fprintf(f, "\n");
+
+ fprintf(f, " pk_delay");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12s", sprint_time(stnc->peak_delay_us[i], b1));
+ fprintf(f, "\n");
+
+ fprintf(f, " av_delay");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12s", sprint_time(stnc->avge_delay_us[i], b1));
+ fprintf(f, "\n");
+
+ fprintf(f, " sp_delay");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12s", sprint_time(stnc->base_delay_us[i], b1));
+ fprintf(f, "\n");
+
+ fprintf(f, " pkts ");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12u", stnc->sent[i].packets);
+ fprintf(f, "\n");
+
+ fprintf(f, " bytes ");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12llu", stnc->sent[i].bytes);
+ fprintf(f, "\n");
+
+ fprintf(f, " way_inds");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12u", stnc->way_indirect_hits[i]);
+ fprintf(f, "\n");
+
+ fprintf(f, " way_miss");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12u", stnc->way_misses[i]);
+ fprintf(f, "\n");
+
+ fprintf(f, " way_cols");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12u", stnc->way_collisions[i]);
+ fprintf(f, "\n");
+
+ fprintf(f, " drops ");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12u", stnc->dropped[i].packets);
+ fprintf(f, "\n");
+
+ fprintf(f, " marks ");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12u", stnc->ecn_marked[i].packets);
+ fprintf(f, "\n");
+
+ if(stnc->version >= 5) {
+ fprintf(f, " ack_drop");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12u", stnc->ack_drops[i].packets);
+ fprintf(f, "\n");
+ }
+
+ fprintf(f, " sp_flows");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12u", stnc->sparse_flows[i]);
+ fprintf(f, "\n");
+
+ fprintf(f, " bk_flows");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12u", stnc->bulk_flows[i]);
+ fprintf(f, "\n");
+
+ if(stnc->version >= 4) {
+ fprintf(f, " un_flows");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12u", stnc->unresponse_flows[i]);
+ fprintf(f, "\n");
+ }
+
+ fprintf(f, " max_len ");
+ for(i=0; i < stnc->tin_cnt; i++)
+ fprintf(f, " %12u", stnc->max_skblen[i]);
+ fprintf(f, "\n");
+ } else {
+ return -1;
+ }
+ return 0;
+}
+
+struct qdisc_util cake_qdisc_util = {
+ .id = "cake",
+ .parse_qopt = cake_parse_opt,
+ .print_qopt = cake_print_opt,
+ .print_xstats = cake_print_xstats,
+};
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