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-rw-r--r--package/network/utils/iproute2/patches/950-add-cake-to-tc.patch1235
1 files changed, 969 insertions, 266 deletions
diff --git a/package/network/utils/iproute2/patches/950-add-cake-to-tc.patch b/package/network/utils/iproute2/patches/950-add-cake-to-tc.patch
index 5edb71ddc9..216d7c7ef3 100644
--- a/package/network/utils/iproute2/patches/950-add-cake-to-tc.patch
+++ b/package/network/utils/iproute2/patches/950-add-cake-to-tc.patch
@@ -1,6 +1,8 @@
+diff --git a/include/uapi/linux/pkt_sched.h b/include/uapi/linux/pkt_sched.h
+index 37b5096a..66da5df9 100644
--- a/include/uapi/linux/pkt_sched.h
+++ b/include/uapi/linux/pkt_sched.h
-@@ -934,4 +934,62 @@ enum {
+@@ -934,4 +934,75 @@ enum {
#define TCA_CBS_MAX (__TCA_CBS_MAX - 1)
@@ -17,7 +19,7 @@
+ TCA_CAKE_AUTORATE,
+ TCA_CAKE_MEMORY,
+ TCA_CAKE_NAT,
-+ TCA_CAKE_ETHERNET,
++ TCA_CAKE_RAW, // was _ETHERNET
+ TCA_CAKE_WASH,
+ TCA_CAKE_MPU,
+ TCA_CAKE_INGRESS,
@@ -33,53 +35,757 @@
+};
+
+#define TC_CAKE_MAX_TINS (8)
++struct tc_cake_tin_stats {
++
++ __u32 threshold_rate;
++ __u32 target_us;
++ struct tc_cake_traffic_stats sent;
++ struct tc_cake_traffic_stats dropped;
++ struct tc_cake_traffic_stats ecn_marked;
++ struct tc_cake_traffic_stats backlog;
++ __u32 interval_us;
++ __u32 way_indirect_hits;
++ __u32 way_misses;
++ __u32 way_collisions;
++ __u32 peak_delay_us; /* ~= bulk flow delay */
++ __u32 avge_delay_us;
++ __u32 base_delay_us; /* ~= sparse flows delay */
++ __u16 sparse_flows;
++ __u16 bulk_flows;
++ __u16 unresponse_flows;
++ __u16 spare;
++ __u32 max_skblen;
++ struct tc_cake_traffic_stats ack_drops;
++};
++
+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 */
++ __u16 version;
++ __u16 tin_stats_size; /* == sizeof(struct tc_cake_tin_stats) */
++ __u32 capacity_estimate;
++ __u32 memory_limit;
++ __u32 memory_used;
++ __u8 tin_cnt;
++ __u8 avg_trnoff;
++ __u16 max_trnlen;
++ __u16 max_adjlen;
++ __u16 min_trnlen;
++ __u16 min_adjlen;
++
++ __u16 spare1;
++ __u32 spare2;
++
++ struct tc_cake_tin_stats tin_stats[0]; /* keep last */
+};
+
#endif
+diff --git a/man/man8/tc-cake.8 b/man/man8/tc-cake.8
+new file mode 100644
+index 00000000..ff77db8f
+--- /dev/null
++++ b/man/man8/tc-cake.8
+@@ -0,0 +1,678 @@
++.TH CAKE 8 "23 November 2017" "iproute2" "Linux"
++.SH NAME
++CAKE \- COMMON Applications Kept Enhanced (CAKE)
++.SH SYNOPSIS
++.B tc qdisc ... cake
++.br
++[
++.BR bandwidth
++RATE |
++.BR unlimited*
++|
++.BR autorate_ingress
++]
++.br
++[
++.BR rtt
++TIME |
++.BR datacentre
++|
++.BR lan
++|
++.BR metro
++|
++.BR regional
++|
++.BR internet*
++|
++.BR oceanic
++|
++.BR satellite
++|
++.BR interplanetary
++]
++.br
++[
++.BR besteffort
++|
++.BR diffserv8
++|
++.BR diffserv4
++|
++.BR diffserv-llt
++|
++.BR diffserv3*
++]
++.br
++[
++.BR flowblind
++|
++.BR srchost
++|
++.BR dsthost
++|
++.BR hosts
++|
++.BR flows
++|
++.BR dual-srchost
++|
++.BR dual-dsthost
++|
++.BR triple-isolate*
++]
++.br
++[
++.BR nat
++|
++.BR nonat*
++]
++.br
++[
++.BR wash
++|
++.BR nowash*
++]
++.br
++[
++.BR ack-filter
++|
++.BR ack-filter-aggressive
++|
++.BR no-ack-filter*
++]
++.br
++[
++.BR memlimit
++LIMIT ]
++.br
++[
++.BR ptm
++|
++.BR atm
++|
++.BR noatm*
++]
++.br
++[
++.BR overhead
++N |
++.BR conservative
++|
++.BR raw*
++]
++.br
++[
++.BR mpu
++N ]
++.br
++[
++.BR ingress
++|
++.BR egress*
++]
++.br
++(* marks defaults)
++
++
++.SH DESCRIPTION
++CAKE (Common Applications Kept Enhanced) is a shaping-capable queue discipline
++which uses both AQM and FQ. It combines COBALT, which is an AQM algorithm
++combining Codel and BLUE, a shaper which operates in deficit mode, and a variant
++of DRR++ for flow isolation. 8-way set-associative hashing is used to virtually
++eliminate hash collisions. Priority queuing is available through a simplified
++diffserv implementation. Overhead compensation for various encapsulation
++schemes is tightly integrated.
++
++All settings are optional; the default settings are chosen to be sensible in
++most common deployments. Most people will only need to set the
++.B bandwidth
++parameter to get useful results, but reading the
++.B Overhead Compensation
++and
++.B Round Trip Time
++sections is strongly encouraged.
++
++.SH SHAPER PARAMETERS
++CAKE uses a deficit-mode shaper, which does not exhibit the initial burst
++typical of token-bucket shapers. It will automatically burst precisely as much
++as required to maintain the configured throughput. As such, it is very
++straightforward to configure.
++.PP
++.B unlimited
++(default)
++.br
++ No limit on the bandwidth.
++.PP
++.B bandwidth
++RATE
++.br
++ Set the shaper bandwidth. See
++.BR tc(8)
++or examples below for details of the RATE value.
++.PP
++.B autorate_ingress
++.br
++ Automatic capacity estimation based on traffic arriving at this qdisc.
++This is most likely to be useful with cellular links, which tend to change
++quality randomly. A
++.B bandwidth
++parameter can be used in conjunction to specify an initial estimate. The shaper
++will periodically be set to a bandwidth slightly below the estimated rate. This
++estimator cannot estimate the bandwidth of links downstream of itself.
++
++.SH OVERHEAD COMPENSATION PARAMETERS
++The size of each packet on the wire may differ from that seen by Linux. The
++following parameters allow CAKE to compensate for this difference by internally
++considering each packet to be bigger than Linux informs it. To assist users who
++are not expert network engineers, keywords have been provided to represent a
++number of common link technologies.
++
++.SS Manual Overhead Specification
++.B overhead
++BYTES
++.br
++ Adds BYTES to the size of each packet. BYTES may be negative; values
++between -64 and 256 (inclusive) are accepted.
++.PP
++.B mpu
++BYTES
++.br
++ Rounds each packet (including overhead) up to a minimum length
++BYTES. BYTES may not be negative; values between 0 and 256 (inclusive)
++are accepted.
++.PP
++.B atm
++.br
++ Compensates for ATM cell framing, which is normally found on ADSL links.
++This is performed after the
++.B overhead
++parameter above. ATM uses fixed 53-byte cells, each of which can carry 48 bytes
++payload.
++.PP
++.B ptm
++.br
++ Compensates for PTM encoding, which is normally found on VDSL2 links and
++uses a 64b/65b encoding scheme. It is even more efficient to simply
++derate the specified shaper bandwidth by a factor of 64/65 or 0.984. See
++ITU G.992.3 Annex N and IEEE 802.3 Section 61.3 for details.
++.PP
++.B noatm
++.br
++ Disables ATM and PTM compensation.
++
++.SS Failsafe Overhead Keywords
++These two keywords are provided for quick-and-dirty setup. Use them if you
++can't be bothered to read the rest of this section.
++.PP
++.B raw
++(default)
++.br
++ Turns off all overhead compensation in CAKE. The packet size reported
++by Linux will be used directly.
++.PP
++ Other overhead keywords may be added after "raw". The effect of this is
++to make the overhead compensation operate relative to the reported packet size,
++not the underlying IP packet size.
++.PP
++.B conservative
++.br
++ Compensates for more overhead than is likely to occur on any
++widely-deployed link technology.
++.br
++ Equivalent to
++.B overhead 48 atm.
++
++.SS ADSL Overhead Keywords
++Most ADSL modems have a way to check which framing scheme is in use. Often this
++is also specified in the settings document provided by the ISP. The keywords in
++this section are intended to correspond with these sources of information. All
++of them implicitly set the
++.B atm
++flag.
++.PP
++.B pppoa-vcmux
++.br
++ Equivalent to
++.B overhead 10 atm
++.PP
++.B pppoa-llc
++.br
++ Equivalent to
++.B overhead 14 atm
++.PP
++.B pppoe-vcmux
++.br
++ Equivalent to
++.B overhead 32 atm
++.PP
++.B pppoe-llcsnap
++.br
++ Equivalent to
++.B overhead 40 atm
++.PP
++.B bridged-vcmux
++.br
++ Equivalent to
++.B overhead 24 atm
++.PP
++.B bridged-llcsnap
++.br
++ Equivalent to
++.B overhead 32 atm
++.PP
++.B ipoa-vcmux
++.br
++ Equivalent to
++.B overhead 8 atm
++.PP
++.B ipoa-llcsnap
++.br
++ Equivalent to
++.B overhead 16 atm
++.PP
++See also the Ethernet Correction Factors section below.
++
++.SS VDSL2 Overhead Keywords
++ATM was dropped from VDSL2 in favour of PTM, which is a much more
++straightforward framing scheme. Some ISPs retained PPPoE for compatibility with
++their existing back-end systems.
++.PP
++.B pppoe-ptm
++.br
++ Equivalent to
++.B overhead 30 ptm
++
++.br
++ PPPoE: 2B PPP + 6B PPPoE +
++.br
++ ETHERNET: 6B dest MAC + 6B src MAC + 2B ethertype + 4B Frame Check Sequence +
++.br
++ PTM: 1B Start of Frame (S) + 1B End of Frame (Ck) + 2B TC-CRC (PTM-FCS)
++.br
++.PP
++.B bridged-ptm
++.br
++ Equivalent to
++.B overhead 22 ptm
++.br
++ ETHERNET: 6B dest MAC + 6B src MAC + 2B ethertype + 4B Frame Check Sequence +
++.br
++ PTM: 1B Start of Frame (S) + 1B End of Frame (Ck) + 2B TC-CRC (PTM-FCS)
++.br
++.PP
++See also the Ethernet Correction Factors section below.
++
++.SS DOCSIS Cable Overhead Keyword
++DOCSIS is the universal standard for providing Internet service over cable-TV
++infrastructure.
++
++In this case, the actual on-wire overhead is less important than the packet size
++the head-end equipment uses for shaping and metering. This is specified to be
++an Ethernet frame including the CRC (aka FCS).
++.PP
++.B docsis
++.br
++ Equivalent to
++.B overhead 18 mpu 64 noatm
++
++.SS Ethernet Overhead Keywords
++.PP
++.B ethernet
++.br
++ Accounts for Ethernet's preamble, inter-frame gap, and Frame Check
++Sequence. Use this keyword when the bottleneck being shaped for is an
++actual Ethernet cable.
++.br
++ Equivalent to
++.B overhead 38 mpu 84 noatm
++.PP
++.B ether-vlan
++.br
++ Adds 4 bytes to the overhead compensation, accounting for an IEEE 802.1Q
++VLAN header appended to the Ethernet frame header. NB: Some ISPs use one or
++even two of these within PPPoE; this keyword may be repeated as necessary to
++express this.
++
++.SH ROUND TRIP TIME PARAMETERS
++Active Queue Management (AQM) consists of embedding congestion signals in the
++packet flow, which receivers use to instruct senders to slow down when the queue
++is persistently occupied. CAKE uses ECN signalling when available, and packet
++drops otherwise, according to a combination of the Codel and BLUE AQM algorithms
++called COBALT.
++
++Very short latencies require a very rapid AQM response to adequately control
++latency. However, such a rapid response tends to impair throughput when the
++actual RTT is relatively long. CAKE allows specifying the RTT it assumes for
++tuning various parameters. Actual RTTs within an order of magnitude of this
++will generally work well for both throughput and latency management.
++
++At the 'lan' setting and below, the time constants are similar in magnitude to
++the jitter in the Linux kernel itself, so congestion might be signalled
++prematurely. The flows will then become sparse and total throughput reduced,
++leaving little or no back-pressure for the fairness logic to work against. Use
++the "metro" setting for local lans unless you have a custom kernel.
++.PP
++.B rtt
++TIME
++.br
++ Manually specify an RTT.
++.PP
++.B datacentre
++.br
++ For extremely high-performance 10GigE+ networks only. Equivalent to
++.B rtt 100us.
++.PP
++.B lan
++.br
++ For pure Ethernet (not Wi-Fi) networks, at home or in the office. Don't
++use this when shaping for an Internet access link. Equivalent to
++.B rtt 1ms.
++.PP
++.B metro
++.br
++ For traffic mostly within a single city. Equivalent to
++.B rtt 10ms.
++.PP
++.B regional
++.br
++ For traffic mostly within a European-sized country. Equivalent to
++.B rtt 30ms.
++.PP
++.B internet
++(default)
++.br
++ This is suitable for most Internet traffic. Equivalent to
++.B rtt 100ms.
++.PP
++.B oceanic
++.br
++ For Internet traffic with generally above-average latency, such as that
++suffered by Australasian residents. Equivalent to
++.B rtt 300ms.
++.PP
++.B satellite
++.br
++ For traffic via geostationary satellites. Equivalent to
++.B rtt 1000ms.
++.PP
++.B interplanetary
++.br
++ So named because Jupiter is about 1 light-hour from Earth. Use this to
++(almost) completely disable AQM actions. Equivalent to
++.B rtt 1000s.
++
++.SH FLOW ISOLATION PARAMETERS
++With flow isolation enabled, CAKE places packets from different flows into
++different queues, each of which carries its own AQM state. Packets from each
++queue are then delivered fairly, according to a DRR++ algorithm which minimises
++latency for "sparse" flows. CAKE uses a set-associative hashing algorithm to
++minimise flow collisions.
++
++These keywords specify whether fairness based on source address, destination
++address, individual flows, or any combination of those is desired.
++.PP
++.B flowblind
++.br
++ Disables flow isolation; all traffic passes through a single queue for
++each tin.
++.PP
++.B srchost
++.br
++ Flows are defined only by source address. Could be useful on the egress
++path of an ISP backhaul.
++.PP
++.B dsthost
++.br
++ Flows are defined only by destination address. Could be useful on the
++ingress path of an ISP backhaul.
++.PP
++.B hosts
++.br
++ Flows are defined by source-destination host pairs. This is host
++isolation, rather than flow isolation.
++.PP
++.B flows
++.br
++ Flows are defined by the entire 5-tuple of source address, destination
++address, transport protocol, source port and destination port. This is the type
++of flow isolation performed by SFQ and fq_codel.
++.PP
++.B dual-srchost
++.br
++ Flows are defined by the 5-tuple, and fairness is applied first over
++source addresses, then over individual flows. Good for use on egress traffic
++from a LAN to the internet, where it'll prevent any one LAN host from
++monopolising the uplink, regardless of the number of flows they use.
++.PP
++.B dual-dsthost
++.br
++ Flows are defined by the 5-tuple, and fairness is applied first over
++destination addresses, then over individual flows. Good for use on ingress
++traffic to a LAN from the internet, where it'll prevent any one LAN host from
++monopolising the downlink, regardless of the number of flows they use.
++.PP
++.B triple-isolate
++(default)
++.br
++ Flows are defined by the 5-tuple, and fairness is applied over source
++*and* destination addresses intelligently (ie. not merely by host-pairs), and
++also over individual flows. Use this if you're not certain whether to use
++dual-srchost or dual-dsthost; it'll do both jobs at once, preventing any one
++host on *either* side of the link from monopolising it with a large number of
++flows.
++.PP
++.B nat
++.br
++ Instructs Cake to perform a NAT lookup before applying flow-isolation
++rules, to determine the true addresses and port numbers of the packet, to
++improve fairness between hosts "inside" the NAT. This has no practical effect
++in "flowblind" or "flows" modes, or if NAT is performed on a different host.
++.PP
++.B nonat
++(default)
++.br
++ Cake will not perform a NAT lookup. Flow isolation will be performed
++using the addresses and port numbers directly visible to the interface Cake is
++attached to.
++
++.SH PRIORITY QUEUE PARAMETERS
++CAKE can divide traffic into "tins" based on the Diffserv field. Each tin has
++its own independent set of flow-isolation queues, and is serviced based on a WRR
++algorithm. To avoid perverse Diffserv marking incentives, tin weights have a
++"priority sharing" value when bandwidth used by that tin is below a threshold,
++and a lower "bandwidth sharing" value when above. Bandwidth is compared against
++the threshold using the same algorithm as the deficit-mode shaper.
++
++Detailed customisation of tin parameters is not provided. The following presets
++perform all necessary tuning, relative to the current shaper bandwidth and RTT
++settings.
++.PP
++.B besteffort
++.br
++ Disables priority queuing by placing all traffic in one tin.
++.PP
++.B precedence
++.br
++ Enables legacy interpretation of TOS "Precedence" field. Use of this
++preset on the modern Internet is firmly discouraged.
++.PP
++.B diffserv-llt
++.br
++ Provides a "Latency-Loss Tradeoff" implementation with five tins:
++.br
++ Low Loss (TOS1, TOS2), 100% threshold, increased Codel target.
++.br
++ Best Effort (general), 100% threshold, normal Codel target & interval.
++.br
++ Low Latency (TOS4, TOS5, VA, EF), 100% threshold, reduced Codel interval.
++.br
++ Bulk (CS1), 6.25% threshold, normal Codel target & interval.
++.br
++ Net Control (CS6, CS7), 6.25% threshold, increased Codel target & interval.
++.PP
++.B diffserv4
++.br
++ Provides a general-purpose Diffserv implementation with four tins:
++.br
++ Bulk (CS1), 6.25% threshold, generally low priority.
++.br
++ Best Effort (general), 100% threshold.
++.br
++ Video (AF4x, AF3x, CS3, AF2x, CS2, TOS4, TOS1), 50% threshold.
++.br
++ Voice (CS7, CS6, EF, VA, CS5, CS4), 25% threshold.
++.PP
++.B diffserv3
++(default)
++.br
++ Provides a simple, general-purpose Diffserv implementation with three tins:
++.br
++ Bulk (CS1), 6.25% threshold, generally low priority.
++.br
++ Best Effort (general), 100% threshold.
++.br
++ Voice (CS7, CS6, EF, VA, TOS4), 25% threshold, reduced Codel interval.
++
++.SH OTHER PARAMETERS
++.B memlimit
++LIMIT
++.br
++ Limit the memory consumed by Cake to LIMIT bytes. Note that this does
++not translate directly to queue size (so do not size this based on bandwidth
++delay product considerations, but rather on worst case acceptable memory
++consumption), as there is some overhead in the data structures containing the
++packets, especially for small packets.
++
++ By default, the limit is calculated based on the bandwidth and RTT
++settings.
++
++.PP
++.B wash
++
++.br
++ Traffic entering your diffserv domain is frequently mis-marked in
++transit from the perspective of your network, and traffic exiting yours may be
++mis-marked from the perspective of the transiting provider.
++
++Apply the wash option to clear all extra diffserv (but not ECN bits), after
++priority queuing has taken place.
++
++If you are shaping inbound, and cannot trust the diffserv markings (as is the
++case for Comcast Cable, among others), it is best to use a single queue
++"besteffort" mode with wash.
++
++.SH EXAMPLES
++# tc qdisc delete root dev eth0
++.br
++# tc qdisc add root dev eth0 cake bandwidth 9500Kbit pppoe-ptm ether-vlan
++.br
++# tc -s qdisc show dev eth0
++.br
++qdisc cake 8007: root refcnt 6 bandwidth 9500Kbit diffserv3 triple-isolate rtt 100.0ms ptm overhead 34 via-ethernet total_overhead 34 hard_header_len 14
++ Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
++ backlog 0b 0p requeues 0
++ memory used: 0b of 4Mb
++ capacity estimate: 9500Kbit
++.br
++ Bulk Best Effort Voice
++.br
++ thresh 593744bit 9500Kbit 2375Kbit
++.br
++ target 30.6ms 5.0ms 7.6ms
++.br
++ interval 125.6ms 100.0ms 102.6ms
++.br
++ pk_delay 0us 0us 0us
++.br
++ av_delay 0us 0us 0us
++.br
++ sp_delay 0us 0us 0us
++.br
++ pkts 0 0 0
++.br
++ bytes 0 0 0
++.br
++ way_inds 0 0 0
++.br
++ way_miss 0 0 0
++.br
++ way_cols 0 0 0
++.br
++ drops 0 0 0
++.br
++ marks 0 0 0
++.br
++ ack_drop 0 0 0
++.br
++ sp_flows 0 0 0
++.br
++ bk_flows 0 0 0
++.br
++ un_flows 0 0 0
++.br
++ max_len 0 0 0
++.br
++
++After some use:
++.br
++# tc -s qdisc show dev eth0
++
++qdisc cake 8007: root refcnt 6 bandwidth 9500Kbit diffserv3 triple-isolate rtt 100.0ms ptm overhead 34 via-ethernet total_overhead 34 hard_header_len 14
++ Sent 110769306 bytes 313857 pkt (dropped 18, overlimits 741791 requeues 0)
++ backlog 0b 0p requeues 0
++ memory used: 110488b of 4Mb
++ capacity estimate: 9500Kbit
++.br
++ Bulk Best Effort Voice
++.br
++ thresh 593744bit 9500Kbit 2375Kbit
++.br
++ target 30.6ms 5.0ms 7.6ms
++.br
++ interval 125.6ms 100.0ms 102.6ms
++.br
++ pk_delay 16.0ms 545us 15us
++.br
++ av_delay 2.4ms 161us 3us
++.br
++ sp_delay 59us 1us 1us
++.br
++ pkts 32866 195815 85194
++.br
++ bytes 8132614 69517496 33122156
++.br
++ way_inds 0 29208 0
++.br
++ way_miss 7 173 17
++.br
++ way_cols 0 0 0
++.br
++ drops 10 7 1
++.br
++ marks 217 692 300
++.br
++ ack_drop 0 0 0
++.br
++ sp_flows 0 0 0
++.br
++ bk_flows 0 0 1
++.br
++ un_flows 0 0 0
++.br
++ max_len 3028 3012 3028
++.br
++
++.SH SEE ALSO
++.BR tc (8),
++.BR tc-codel (8),
++.BR tc-fq_codel (8),
++.BR tc-red (8)
++
++.SH AUTHORS
++Cake's principal author is Jonathan Morton, with contributions from
++Tony Ambardar, Kevin Darbyshire-Bryant, Toke Høiland-Jørgensen,
++Sebastian Moeller, Ryan Mounce, Dean Scarff, Nils Andreas Svee, and Dave Täht.
++
++This manual page was written by Loganaden Velvindron. Please report corrections
++to the Linux Networking mailing list <netdev@vger.kernel.org>.
+diff --git a/tc/Makefile b/tc/Makefile
+index 3716dd6a..69f50a6b 100644
--- a/tc/Makefile
+++ b/tc/Makefile
-@@ -66,6 +66,7 @@ TCMODULES += q_codel.o
+@@ -64,6 +64,7 @@ TCMODULES += em_meta.o
+ TCMODULES += q_mqprio.o
+ TCMODULES += q_codel.o
TCMODULES += q_fq_codel.o
++TCMODULES += q_cake.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
+diff --git a/tc/q_cake.c b/tc/q_cake.c
+new file mode 100644
+index 00000000..44cadb63
--- /dev/null
+++ b/tc/q_cake.c
-@@ -0,0 +1,771 @@
+@@ -0,0 +1,770 @@
++/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
+/*
+ * Common Applications Kept Enhanced -- CAKE
+ *
-+ * Copyright (C) 2014-2015 Jonathan Morton <chromatix99@gmail.com>
++ * Copyright (C) 2014-2018 Jonathan Morton <chromatix99@gmail.com>
++ * Copyright (C) 2017-2018 Toke Høiland-Jørgensen <toke@toke.dk>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
@@ -138,8 +844,8 @@
+" [ 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"
++" [ 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"
@@ -147,7 +853,7 @@
+}
+
+static int cake_parse_opt(struct qdisc_util *qu, int argc, char **argv,
-+ struct nlmsghdr *n)
++ struct nlmsghdr *n, const char *dev)
+{
+ int unlimited = 0;
+ unsigned bandwidth = 0;
@@ -215,8 +921,8 @@
+ interval = 1000000;
+ target = 50000;
+ } else if (strcmp(*argv, "interplanetary") == 0) {
-+ interval = 3600000000U;
-+ target = 5000;
++ interval = 1000000000;
++ target = 50000000;
+
+ } else if (strcmp(*argv, "besteffort") == 0) {
+ diffserv = 1;
@@ -351,23 +1057,6 @@
+ * 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 */
@@ -454,7 +1143,7 @@
+ 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));
++ addattr_l(n, 1024, TCA_CAKE_RAW, &zero, sizeof(zero));
+ }
+ if (mpu > 0)
+ addattr_l(n, 1024, TCA_CAKE_MPU, &mpu, sizeof(mpu));
@@ -489,7 +1178,7 @@
+ unsigned interval = 0;
+ unsigned memlimit = 0;
+ int overhead = 0;
-+ int ethernet = 0;
++ int raw = 0;
+ int mpu = 0;
+ int atm = 0;
+ int nat = 0;
@@ -508,43 +1197,44 @@
+ 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(bandwidth) {
++ print_uint(PRINT_JSON, "bandwidth", NULL, bandwidth);
++ print_string(PRINT_FP, NULL, "bandwidth %s ", sprint_rate(bandwidth, b1));
++ } else
++ print_string(PRINT_ANY, "bandwidth", "bandwidth %s ", "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 ");
++ print_string(PRINT_ANY, "autorate", "autorate_%s ", "ingress");
+ else if(autorate)
-+ fprintf(f, "(?autorate?) ");
++ print_string(PRINT_ANY, "autorate", "(?autorate?) ", "unknown");
+ }
+ 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 ");
++ print_string(PRINT_ANY, "diffserv", "%s ", "besteffort");
+ break;
+ case 2:
-+ fprintf(f, "precedence ");
++ print_string(PRINT_ANY, "diffserv", "%s ", "precedence");
+ break;
+ case 3:
-+ fprintf(f, "diffserv8 ");
++ print_string(PRINT_ANY, "diffserv", "%s ", "diffserv8");
+ break;
+ case 4:
-+ fprintf(f, "diffserv4 ");
++ print_string(PRINT_ANY, "diffserv", "%s ", "diffserv4");
+ break;
+ case 5:
-+ fprintf(f, "diffserv-llt ");
++ print_string(PRINT_ANY, "diffserv", "%s ", "diffserv-llt");
+ break;
+ case 6:
-+ fprintf(f, "diffserv3 ");
++ print_string(PRINT_ANY, "diffserv", "%s ", "diffserv3");
+ break;
+ default:
-+ fprintf(f, "(?diffserv?) ");
++ print_string(PRINT_ANY, "diffserv", "(?diffserv?) ", "unknown");
+ break;
+ };
+ }
@@ -555,36 +1245,37 @@
+ flowmode &= ~64;
+ switch(flowmode) {
+ case 0:
-+ fprintf(f, "flowblind ");
++ print_string(PRINT_ANY, "flowmode", "%s ", "flowblind");
+ break;
+ case 1:
-+ fprintf(f, "srchost ");
++ print_string(PRINT_ANY, "flowmode", "%s ", "srchost");
+ break;
+ case 2:
-+ fprintf(f, "dsthost ");
++ print_string(PRINT_ANY, "flowmode", "%s ", "dsthost");
+ break;
+ case 3:
-+ fprintf(f, "hosts ");
++ print_string(PRINT_ANY, "flowmode", "%s ", "hosts");
+ break;
+ case 4:
-+ fprintf(f, "flows ");
++ print_string(PRINT_ANY, "flowmode", "%s ", "flows");
+ break;
+ case 5:
-+ fprintf(f, "dual-srchost ");
++ print_string(PRINT_ANY, "flowmode", "%s ", "dual-srchost");
+ break;
+ case 6:
-+ fprintf(f, "dual-dsthost ");
++ print_string(PRINT_ANY, "flowmode", "%s ", "dual-dsthost");
+ break;
+ case 7:
-+ fprintf(f, "triple-isolate ");
++ print_string(PRINT_ANY, "flowmode", "%s ", "triple-isolate");
+ break;
+ default:
-+ fprintf(f, "(?flowmode?) ");
++ print_string(PRINT_ANY, "flowmode", "(?flowmode?) ", "unknown");
+ break;
+ };
+
+ if(nat)
-+ fprintf(f, "nat ");
++ print_string(PRINT_FP, NULL, "nat ", NULL);
++ print_bool(PRINT_JSON, "nat", NULL, nat);
+ }
+ if (tb[TCA_CAKE_WASH] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_WASH]) >= sizeof(__u32)) {
@@ -610,9 +1301,8 @@
+ 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_RAW]) {
++ raw = 1;
+ }
+ if (tb[TCA_CAKE_RTT] &&
+ RTA_PAYLOAD(tb[TCA_CAKE_RTT]) >= sizeof(__u32)) {
@@ -620,224 +1310,237 @@
+ }
+
+ if (wash)
-+ fprintf(f,"wash ");
++ print_string(PRINT_FP, NULL, "wash ", NULL);
++ print_bool(PRINT_JSON, "wash", NULL, wash);
+
+ if (ingress)
-+ fprintf(f,"ingress ");
++ print_string(PRINT_FP, NULL, "ingress ", NULL);
++ print_bool(PRINT_JSON, "ingress", NULL, ingress);
+
+ if (ack_filter == 0x0600)
-+ fprintf(f,"ack-filter-aggressive ");
++ print_string(PRINT_ANY, "ack-filter", "ack-filter-%s ", "aggressive");
+ else if (ack_filter)
-+ fprintf(f,"ack-filter ");
++ print_string(PRINT_ANY, "ack-filter", "ack-filter ", "enabled");
++ else
++ print_string(PRINT_JSON, "ack-filter", NULL, "disabled");
+
+ 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 ");
-+ }
++ print_string(PRINT_FP, NULL, "rtt %s ", sprint_time(interval, b2));
++ print_uint(PRINT_JSON, "rtt", NULL, interval);
+
-+ /* 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 (raw)
++ print_string(PRINT_FP, NULL, "raw ", NULL);
++ print_bool(PRINT_JSON, "raw", NULL, raw);
+
-+ if (mpu) {
-+ fprintf(f, "mpu %d ", mpu);
-+ }
++ if (atm == 1)
++ print_string(PRINT_ANY, "atm", "%s ", "atm");
++ else if (atm == 2)
++ print_string(PRINT_ANY, "atm", "%s ", "ptm");
++ else if (!raw)
++ print_string(PRINT_ANY, "atm", "%s ", "noatm");
+
-+ if (memlimit)
-+ fprintf(f, "memlimit %s", sprint_size(memlimit, b1));
++ print_uint(PRINT_ANY, "overhead", "overhead %d ", overhead);
++
++ if (mpu)
++ print_uint(PRINT_ANY, "mpu", "mpu %d ", mpu);
++
++ if (memlimit) {
++ print_uint(PRINT_JSON, "memlimit", NULL, memlimit);
++ print_string(PRINT_FP, NULL, "memlimit %s", sprint_size(memlimit, b1));
++ }
+
+ return 0;
+}
+
++#define FOR_EACH_TIN(xstats, tst, i) \
++ for(tst = xstats->tin_stats, i = 0; \
++ i < xstats->tin_cnt; \
++ i++, tst = ((void *) xstats->tin_stats) + xstats->tin_stats_size * i)
++
++static void cake_print_json_tin(struct tc_cake_tin_stats *tst)
++{
++ open_json_object(NULL);
++ print_uint(PRINT_JSON, "threshold_rate", NULL, tst->threshold_rate);
++ print_uint(PRINT_JSON, "target", NULL, tst->target_us);
++ print_uint(PRINT_JSON, "interval", NULL, tst->interval_us);
++ print_uint(PRINT_JSON, "peak_delay", NULL, tst->peak_delay_us);
++ print_uint(PRINT_JSON, "average_delay", NULL, tst->avge_delay_us);
++ print_uint(PRINT_JSON, "base_delay", NULL, tst->base_delay_us);
++ print_uint(PRINT_JSON, "sent_packets", NULL, tst->sent.packets);
++ print_uint(PRINT_JSON, "sent_bytes", NULL, tst->sent.bytes);
++ print_uint(PRINT_JSON, "way_indirect_hits", NULL, tst->way_indirect_hits);
++ print_uint(PRINT_JSON, "way_misses", NULL, tst->way_misses);
++ print_uint(PRINT_JSON, "way_collisions", NULL, tst->way_collisions);
++ print_uint(PRINT_JSON, "drops", NULL, tst->dropped.packets);
++ print_uint(PRINT_JSON, "ecn_mark", NULL, tst->ecn_marked.packets);
++ print_uint(PRINT_JSON, "ack_drops", NULL, tst->ack_drops.packets);
++ print_uint(PRINT_JSON, "sparse_flows", NULL, tst->sparse_flows);
++ print_uint(PRINT_JSON, "bulk_flows", NULL, tst->bulk_flows);
++ print_uint(PRINT_JSON, "unresponsive_flows", NULL, tst->unresponse_flows);
++ print_uint(PRINT_JSON, "max_pkt_len", NULL, tst->max_skblen);
++ close_json_object();
++}
++
+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;
++ struct tc_cake_tin_stats *tst;
+ SPRINT_BUF(b1);
-+ SPRINT_BUF(b2);
++ int i;
+
+ if (xstats == NULL)
+ return 0;
+
-+ if (RTA_PAYLOAD(xstats) < sizeof(st->type))
++ if (RTA_PAYLOAD(xstats) < sizeof(*stnc))
+ 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");
++ if (stnc->version < 0x101 ||
++ RTA_PAYLOAD(xstats) < (sizeof(struct tc_cake_xstats) +
++ stnc->tin_stats_size * stnc->tin_cnt))
++ return -1;
+
-+ fprintf(f, " way_cols");
-+ for(i=0; i < stnc->tin_cnt; i++)
-+ fprintf(f, " %12u", stnc->way_collisions[i]);
-+ fprintf(f, "\n");
++ print_uint(PRINT_JSON, "memory_used", NULL, stnc->memory_used);
++ print_uint(PRINT_JSON, "memory_limit", NULL, stnc->memory_limit);
++ print_uint(PRINT_JSON, "capacity_estimate", NULL, stnc->capacity_estimate);
++
++ print_string(PRINT_FP, NULL, " memory used: %s",
++ sprint_size(stnc->memory_used, b1));
++ print_string(PRINT_FP, NULL, " of %s\n",
++ sprint_size(stnc->memory_limit, b1));
++ print_string(PRINT_FP, NULL, " capacity estimate: %s\n",
++ sprint_rate(stnc->capacity_estimate, b1));
++
++ print_uint(PRINT_ANY, "min_transport_size", " min/max transport layer size: %10u",
++ stnc->min_trnlen);
++ print_uint(PRINT_ANY, "max_transport_size", " /%8u\n", stnc->max_trnlen);
++ print_uint(PRINT_ANY, "min_adj_size", " min/max overhead-adjusted size: %8u",
++ stnc->min_adjlen);
++ print_uint(PRINT_ANY, "max_adj_size", " /%8u\n", stnc->max_adjlen);
++ print_uint(PRINT_ANY, "avg_hdr_offset", " average transport hdr offset: %10u\n\n",
++ stnc->avg_trnoff);
++
++ if (is_json_context()) {
++ open_json_array(PRINT_JSON, "tins");
++ FOR_EACH_TIN(stnc, tst, i)
++ cake_print_json_tin(tst);
++ close_json_array(PRINT_JSON, NULL);
++ return 0;
++ }
+
-+ 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");
++ switch(stnc->tin_cnt) {
++ case 3:
++ fprintf(f, " Bulk Best Effort Voice\n");
++ break;
+
-+ 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");
-+ }
++ case 4:
++ fprintf(f, " Bulk Best Effort Video Voice\n");
++ break;
+
-+ fprintf(f, " sp_flows");
-+ for(i=0; i < stnc->tin_cnt; i++)
-+ fprintf(f, " %12u", stnc->sparse_flows[i]);
-+ fprintf(f, "\n");
++ case 5:
++ fprintf(f, " Low Loss Best Effort Low Delay Bulk Net Control\n");
++ break;
+
-+ fprintf(f, " bk_flows");
++ default:
++ fprintf(f, " ");
+ for(i=0; i < stnc->tin_cnt; i++)
-+ fprintf(f, " %12u", stnc->bulk_flows[i]);
++ fprintf(f, " Tin %u", i);
+ fprintf(f, "\n");
++ };
++
++ fprintf(f, " thresh ");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12s", sprint_rate(tst->threshold_rate, b1));
++ fprintf(f, "\n");
++
++ fprintf(f, " target ");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12s", sprint_time(tst->target_us, b1));
++ fprintf(f, "\n");
++
++ fprintf(f, " interval");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12s", sprint_time(tst->interval_us, b1));
++ fprintf(f, "\n");
++
++ fprintf(f, " pk_delay");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12s", sprint_time(tst->peak_delay_us, b1));
++ fprintf(f, "\n");
++
++ fprintf(f, " av_delay");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12s", sprint_time(tst->avge_delay_us, b1));
++ fprintf(f, "\n");
++
++ fprintf(f, " sp_delay");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12s", sprint_time(tst->base_delay_us, b1));
++ fprintf(f, "\n");
++
++ fprintf(f, " pkts ");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12u", tst->sent.packets);
++ fprintf(f, "\n");
++
++ fprintf(f, " bytes ");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12llu", tst->sent.bytes);
++ fprintf(f, "\n");
++
++ fprintf(f, " way_inds");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12u", tst->way_indirect_hits);
++ fprintf(f, "\n");
++
++ fprintf(f, " way_miss");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12u", tst->way_misses);
++ fprintf(f, "\n");
++
++ fprintf(f, " way_cols");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12u", tst->way_collisions);
++ fprintf(f, "\n");
++
++ fprintf(f, " drops ");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12u", tst->dropped.packets);
++ fprintf(f, "\n");
++
++ fprintf(f, " marks ");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12u", tst->ecn_marked.packets);
++ fprintf(f, "\n");
++
++ fprintf(f, " ack_drop");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12u", tst->ack_drops.packets);
++ fprintf(f, "\n");
++
++ fprintf(f, " sp_flows");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12u", tst->sparse_flows);
++ fprintf(f, "\n");
++
++ fprintf(f, " bk_flows");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12u", tst->bulk_flows);
++ fprintf(f, "\n");
++
++ fprintf(f, " un_flows");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12u", tst->unresponse_flows);
++ fprintf(f, "\n");
++
++ fprintf(f, " max_len ");
++ FOR_EACH_TIN(stnc, tst, i)
++ fprintf(f, " %12u", tst->max_skblen);
++ 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;
+}
+