diff options
Diffstat (limited to 'package/network')
| -rw-r--r-- | package/network/utils/iproute2/Makefile | 12 | ||||
| -rw-r--r-- | package/network/utils/iproute2/patches-cake-legacy/950-add-legacy-cake-to-tc.patch (renamed from package/network/utils/iproute2/patches/950-add-cake-to-tc.patch) | 0 | ||||
| -rw-r--r-- | package/network/utils/iproute2/patches-cake-upstream/951-add-upstream-cake-to-tc.patch | 1499 |
3 files changed, 1511 insertions, 0 deletions
diff --git a/package/network/utils/iproute2/Makefile b/package/network/utils/iproute2/Makefile index 1f566f0c4d..a260aa4e2b 100644 --- a/package/network/utils/iproute2/Makefile +++ b/package/network/utils/iproute2/Makefile @@ -19,6 +19,10 @@ PKG_LICENSE:=GPL-2.0 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(BUILD_VARIANT)/$(PKG_NAME)-$(PKG_VERSION) +USE_CAKE:=$(if $(filter 1y,$(SDK)$(CONFIG_BUILDBOT)),cake-legacy,cake-upstream) +PKG_FLAGS:=$(if $(filter cake-upstream,$(USE_CAKE)),nonshared) +PKG_RELEASE:=$(PKG_RELEASE)-$(USE_CAKE) + include $(INCLUDE_DIR)/package.mk define Package/iproute2/Default @@ -70,6 +74,14 @@ ifeq ($(BUILD_VARIANT),tiny) IP_CONFIG_TINY:=y endif +PATCH_DIR:=$(PKG_BUILD_DIR)/openwrt-patches + +define Build/Patch + $(INSTALL_DIR) $(PATCH_DIR) + $(CP) ./patches/* ./patches-$(USE_CAKE)/* $(PATCH_DIR)/ + $(call Build/Patch/Default) +endef + define Build/Configure $(SED) "s,-I/usr/include/db3,," $(PKG_BUILD_DIR)/Makefile $(SED) "s,^KERNEL_INCLUDE.*,KERNEL_INCLUDE=$(LINUX_DIR)/include," \ diff --git a/package/network/utils/iproute2/patches/950-add-cake-to-tc.patch b/package/network/utils/iproute2/patches-cake-legacy/950-add-legacy-cake-to-tc.patch index 882db8af19..882db8af19 100644 --- a/package/network/utils/iproute2/patches/950-add-cake-to-tc.patch +++ b/package/network/utils/iproute2/patches-cake-legacy/950-add-legacy-cake-to-tc.patch diff --git a/package/network/utils/iproute2/patches-cake-upstream/951-add-upstream-cake-to-tc.patch b/package/network/utils/iproute2/patches-cake-upstream/951-add-upstream-cake-to-tc.patch new file mode 100644 index 0000000000..10de4714ce --- /dev/null +++ b/package/network/utils/iproute2/patches-cake-upstream/951-add-upstream-cake-to-tc.patch @@ -0,0 +1,1499 @@ +--- a/include/linux/pkt_sched.h ++++ b/include/linux/pkt_sched.h +@@ -850,4 +850,118 @@ struct tc_pie_xstats { + __u32 maxq; /* maximum queue size */ + __u32 ecn_mark; /* packets marked with ecn*/ + }; ++/* CAKE */ ++enum { ++ TCA_CAKE_UNSPEC, ++ TCA_CAKE_PAD, ++ TCA_CAKE_BASE_RATE64, ++ 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_RAW, // was _ETHERNET ++ TCA_CAKE_WASH, ++ TCA_CAKE_MPU, ++ TCA_CAKE_INGRESS, ++ TCA_CAKE_ACK_FILTER, ++ TCA_CAKE_SPLIT_GSO, ++ __TCA_CAKE_MAX ++}; ++#define TCA_CAKE_MAX (__TCA_CAKE_MAX - 1) ++ ++enum { ++ __TCA_CAKE_STATS_INVALID, ++ TCA_CAKE_STATS_PAD, ++ TCA_CAKE_STATS_CAPACITY_ESTIMATE64, ++ TCA_CAKE_STATS_MEMORY_LIMIT, ++ TCA_CAKE_STATS_MEMORY_USED, ++ TCA_CAKE_STATS_AVG_NETOFF, ++ TCA_CAKE_STATS_MIN_NETLEN, ++ TCA_CAKE_STATS_MAX_NETLEN, ++ TCA_CAKE_STATS_MIN_ADJLEN, ++ TCA_CAKE_STATS_MAX_ADJLEN, ++ TCA_CAKE_STATS_TIN_STATS, ++ TCA_CAKE_STATS_DEFICIT, ++ TCA_CAKE_STATS_COBALT_COUNT, ++ TCA_CAKE_STATS_DROPPING, ++ TCA_CAKE_STATS_DROP_NEXT_US, ++ TCA_CAKE_STATS_P_DROP, ++ TCA_CAKE_STATS_BLUE_TIMER_US, ++ __TCA_CAKE_STATS_MAX ++}; ++#define TCA_CAKE_STATS_MAX (__TCA_CAKE_STATS_MAX - 1) ++ ++enum { ++ __TCA_CAKE_TIN_STATS_INVALID, ++ TCA_CAKE_TIN_STATS_PAD, ++ TCA_CAKE_TIN_STATS_SENT_PACKETS, ++ TCA_CAKE_TIN_STATS_SENT_BYTES64, ++ TCA_CAKE_TIN_STATS_DROPPED_PACKETS, ++ TCA_CAKE_TIN_STATS_DROPPED_BYTES64, ++ TCA_CAKE_TIN_STATS_ACKS_DROPPED_PACKETS, ++ TCA_CAKE_TIN_STATS_ACKS_DROPPED_BYTES64, ++ TCA_CAKE_TIN_STATS_ECN_MARKED_PACKETS, ++ TCA_CAKE_TIN_STATS_ECN_MARKED_BYTES64, ++ TCA_CAKE_TIN_STATS_BACKLOG_PACKETS, ++ TCA_CAKE_TIN_STATS_BACKLOG_BYTES, ++ TCA_CAKE_TIN_STATS_THRESHOLD_RATE64, ++ TCA_CAKE_TIN_STATS_TARGET_US, ++ TCA_CAKE_TIN_STATS_INTERVAL_US, ++ TCA_CAKE_TIN_STATS_WAY_INDIRECT_HITS, ++ TCA_CAKE_TIN_STATS_WAY_MISSES, ++ TCA_CAKE_TIN_STATS_WAY_COLLISIONS, ++ TCA_CAKE_TIN_STATS_PEAK_DELAY_US, ++ TCA_CAKE_TIN_STATS_AVG_DELAY_US, ++ TCA_CAKE_TIN_STATS_BASE_DELAY_US, ++ TCA_CAKE_TIN_STATS_SPARSE_FLOWS, ++ TCA_CAKE_TIN_STATS_BULK_FLOWS, ++ TCA_CAKE_TIN_STATS_UNRESPONSIVE_FLOWS, ++ TCA_CAKE_TIN_STATS_MAX_SKBLEN, ++ TCA_CAKE_TIN_STATS_FLOW_QUANTUM, ++ __TCA_CAKE_TIN_STATS_MAX ++}; ++#define TCA_CAKE_TIN_STATS_MAX (__TCA_CAKE_TIN_STATS_MAX - 1) ++#define TC_CAKE_MAX_TINS (8) ++ ++enum { ++ CAKE_FLOW_NONE = 0, ++ CAKE_FLOW_SRC_IP, ++ CAKE_FLOW_DST_IP, ++ CAKE_FLOW_HOSTS, /* = CAKE_FLOW_SRC_IP | CAKE_FLOW_DST_IP */ ++ CAKE_FLOW_FLOWS, ++ CAKE_FLOW_DUAL_SRC, /* = CAKE_FLOW_SRC_IP | CAKE_FLOW_FLOWS */ ++ CAKE_FLOW_DUAL_DST, /* = CAKE_FLOW_DST_IP | CAKE_FLOW_FLOWS */ ++ CAKE_FLOW_TRIPLE, /* = CAKE_FLOW_HOSTS | CAKE_FLOW_FLOWS */ ++ CAKE_FLOW_MAX, ++}; ++ ++enum { ++ CAKE_DIFFSERV_DIFFSERV3 = 0, ++ CAKE_DIFFSERV_DIFFSERV4, ++ CAKE_DIFFSERV_DIFFSERV8, ++ CAKE_DIFFSERV_BESTEFFORT, ++ CAKE_DIFFSERV_PRECEDENCE, ++ CAKE_DIFFSERV_MAX ++}; ++ ++enum { ++ CAKE_ACK_NONE = 0, ++ CAKE_ACK_FILTER, ++ CAKE_ACK_AGGRESSIVE, ++ CAKE_ACK_MAX ++}; ++ ++enum { ++ CAKE_ATM_NONE = 0, ++ CAKE_ATM_ATM, ++ CAKE_ATM_PTM, ++ CAKE_ATM_MAX ++}; ++ ++ + #endif +--- /dev/null ++++ b/man/man8/tc-cake.8 +@@ -0,0 +1,632 @@ ++.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 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 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 100Mbit ethernet ++.br ++# tc -s qdisc show dev eth0 ++.br ++qdisc cake 1: dev eth0 root refcnt 2 bandwidth 100Mbit diffserv3 triple-isolate rtt 100.0ms noatm overhead 38 mpu 84 ++ Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) ++ backlog 0b 0p requeues 0 ++ memory used: 0b of 5000000b ++ capacity estimate: 100Mbit ++ min/max network layer size: 65535 / 0 ++ min/max overhead-adjusted size: 65535 / 0 ++ average network hdr offset: 0 ++ ++ Bulk Best Effort Voice ++ thresh 6250Kbit 100Mbit 25Mbit ++ target 5.0ms 5.0ms 5.0ms ++ interval 100.0ms 100.0ms 100.0ms ++ pk_delay 0us 0us 0us ++ av_delay 0us 0us 0us ++ sp_delay 0us 0us 0us ++ pkts 0 0 0 ++ bytes 0 0 0 ++ way_inds 0 0 0 ++ way_miss 0 0 0 ++ way_cols 0 0 0 ++ drops 0 0 0 ++ marks 0 0 0 ++ ack_drop 0 0 0 ++ sp_flows 0 0 0 ++ bk_flows 0 0 0 ++ un_flows 0 0 0 ++ max_len 0 0 0 ++ quantum 300 1514 762 ++ ++After some use: ++.br ++# tc -s qdisc show dev eth0 ++ ++qdisc cake 1: root refcnt 2 bandwidth 100Mbit diffserv3 triple-isolate rtt 100.0ms noatm overhead 38 mpu 84 ++ Sent 44709231 bytes 31931 pkt (dropped 45, overlimits 93782 requeues 0) ++ backlog 33308b 22p requeues 0 ++ memory used: 292352b of 5000000b ++ capacity estimate: 100Mbit ++ min/max network layer size: 28 / 1500 ++ min/max overhead-adjusted size: 84 / 1538 ++ average network hdr offset: 14 ++ ++ Bulk Best Effort Voice ++ thresh 6250Kbit 100Mbit 25Mbit ++ target 5.0ms 5.0ms 5.0ms ++ interval 100.0ms 100.0ms 100.0ms ++ pk_delay 8.7ms 6.9ms 5.0ms ++ av_delay 4.9ms 5.3ms 3.8ms ++ sp_delay 727us 1.4ms 511us ++ pkts 2590 21271 8137 ++ bytes 3081804 30302659 11426206 ++ way_inds 0 46 0 ++ way_miss 3 17 4 ++ way_cols 0 0 0 ++ drops 20 15 10 ++ marks 0 0 0 ++ ack_drop 0 0 0 ++ sp_flows 2 4 1 ++ bk_flows 1 2 1 ++ un_flows 0 0 0 ++ max_len 1514 1514 1514 ++ quantum 300 1514 762 ++ ++.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>. +--- a/tc/Makefile ++++ b/tc/Makefile +@@ -61,6 +61,7 @@ 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_hhf.o +--- /dev/null ++++ b/tc/q_cake.c +@@ -0,0 +1,730 @@ ++/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ ++/* ++ * Common Applications Kept Enhanced -- CAKE ++ * ++ * Copyright (C) 2014-2018 Jonathan Morton <chromatix99@gmail.com> ++ * Copyright (C) 2017-2018 Toke Høiland-Jørgensen <toke@toke.dk> ++ */ ++ ++#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" ++ ++struct cake_preset { ++ char *name; ++ unsigned int target; ++ unsigned int interval; ++}; ++ ++static struct cake_preset presets[] = { ++ {"datacentre", 5, 100}, ++ {"lan", 50, 1000}, ++ {"metro", 500, 10000}, ++ {"regional", 1500, 30000}, ++ {"internet", 5000, 100000}, ++ {"oceanic", 15000, 300000}, ++ {"satellite", 50000, 1000000}, ++ {"interplanetary", 50000000, 1000000000}, ++}; ++ ++ ++static struct cake_preset *find_preset(char *argv) ++{ ++ int i; ++ ++ for (i = 0; i < ARRAY_SIZE(presets); i++) ++ if (!strcmp(argv, presets[i].name)) ++ return &presets[i]; ++ return NULL; ++} ++ ++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 | 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, const char *dev) ++{ ++ int unlimited = 0; ++ __u64 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; ++ struct cake_preset *preset, *preset_set = NULL; ++ ++ while (argc > 0) { ++ if (strcmp(*argv, "bandwidth") == 0) { ++ NEXT_ARG(); ++ if (get_rate64(&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 ((preset = find_preset(*argv))) { ++ if (preset_set) ++ duparg(*argv, preset_set->name); ++ preset_set = preset; ++ target = preset->target; ++ interval = preset->interval; ++ ++ } else if (strcmp(*argv, "besteffort") == 0) { ++ diffserv = CAKE_DIFFSERV_BESTEFFORT; ++ } else if (strcmp(*argv, "precedence") == 0) { ++ diffserv = CAKE_DIFFSERV_PRECEDENCE; ++ } else if (strcmp(*argv, "diffserv8") == 0) { ++ diffserv = CAKE_DIFFSERV_DIFFSERV8; ++ } else if (strcmp(*argv, "diffserv4") == 0) { ++ diffserv = CAKE_DIFFSERV_DIFFSERV4; ++ } else if (strcmp(*argv, "diffserv") == 0) { ++ diffserv = CAKE_DIFFSERV_DIFFSERV4; ++ } else if (strcmp(*argv, "diffserv3") == 0) { ++ diffserv = CAKE_DIFFSERV_DIFFSERV3; ++ ++ } else if (strcmp(*argv, "nowash") == 0) { ++ wash = 0; ++ } else if (strcmp(*argv, "wash") == 0) { ++ wash = 1; ++ ++ } else if (strcmp(*argv, "flowblind") == 0) { ++ flowmode = CAKE_FLOW_NONE; ++ } else if (strcmp(*argv, "srchost") == 0) { ++ flowmode = CAKE_FLOW_SRC_IP; ++ } else if (strcmp(*argv, "dsthost") == 0) { ++ flowmode = CAKE_FLOW_DST_IP; ++ } else if (strcmp(*argv, "hosts") == 0) { ++ flowmode = CAKE_FLOW_HOSTS; ++ } else if (strcmp(*argv, "flows") == 0) { ++ flowmode = CAKE_FLOW_FLOWS; ++ } else if (strcmp(*argv, "dual-srchost") == 0) { ++ flowmode = CAKE_FLOW_DUAL_SRC; ++ } else if (strcmp(*argv, "dual-dsthost") == 0) { ++ flowmode = CAKE_FLOW_DUAL_DST; ++ } else if (strcmp(*argv, "triple-isolate") == 0) { ++ flowmode = CAKE_FLOW_TRIPLE; ++ ++ } else if (strcmp(*argv, "nat") == 0) { ++ nat = 1; ++ } else if (strcmp(*argv, "nonat") == 0) { ++ nat = 0; ++ ++ } else if (strcmp(*argv, "ptm") == 0) { ++ atm = CAKE_ATM_PTM; ++ } else if (strcmp(*argv, "atm") == 0) { ++ atm = CAKE_ATM_ATM; ++ } else if (strcmp(*argv, "noatm") == 0) { ++ atm = CAKE_ATM_NONE; ++ ++ } else if (strcmp(*argv, "raw") == 0) { ++ atm = CAKE_ATM_NONE; ++ 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 = CAKE_ATM_ATM; ++ overhead = 48; ++ overhead_set = true; ++ ++ /* Various ADSL framing schemes, all over ATM cells */ ++ } else if (strcmp(*argv, "ipoa-vcmux") == 0) { ++ atm = CAKE_ATM_ATM; ++ overhead += 8; ++ overhead_set = true; ++ } else if (strcmp(*argv, "ipoa-llcsnap") == 0) { ++ atm = CAKE_ATM_ATM; ++ overhead += 16; ++ overhead_set = true; ++ } else if (strcmp(*argv, "bridged-vcmux") == 0) { ++ atm = CAKE_ATM_ATM; ++ overhead += 24; ++ overhead_set = true; ++ } else if (strcmp(*argv, "bridged-llcsnap") == 0) { ++ atm = CAKE_ATM_ATM; ++ overhead += 32; ++ overhead_set = true; ++ } else if (strcmp(*argv, "pppoa-vcmux") == 0) { ++ atm = CAKE_ATM_ATM; ++ overhead += 10; ++ overhead_set = true; ++ } else if (strcmp(*argv, "pppoa-llc") == 0) { ++ atm = CAKE_ATM_ATM; ++ overhead += 14; ++ overhead_set = true; ++ } else if (strcmp(*argv, "pppoe-vcmux") == 0) { ++ atm = CAKE_ATM_ATM; ++ overhead += 32; ++ overhead_set = true; ++ } else if (strcmp(*argv, "pppoe-llcsnap") == 0) { ++ atm = CAKE_ATM_ATM; ++ 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 = CAKE_ATM_PTM; ++ 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 = CAKE_ATM_PTM; ++ 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, "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 = CAKE_ATM_NONE; ++ 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 = CAKE_ACK_NONE; ++ } else if (strcmp(*argv, "ack-filter") == 0) { ++ ack_filter = CAKE_ACK_FILTER; ++ } else if (strcmp(*argv, "ack-filter-aggressive") == 0) { ++ ack_filter = CAKE_ACK_AGGRESSIVE; ++ ++ } 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_RATE64, &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_RAW, &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]; ++ __u64 bandwidth = 0; ++ unsigned diffserv = 0; ++ unsigned flowmode = 0; ++ unsigned interval = 0; ++ unsigned memlimit = 0; ++ int overhead = 0; ++ int raw = 0; ++ int mpu = 0; ++ int atm = 0; ++ int nat = 0; ++ int autorate = 0; ++ int wash = 0; ++ int ingress = 0; ++ int ack_filter = 0; ++ int split_gso = 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_RATE64] && ++ RTA_PAYLOAD(tb[TCA_CAKE_BASE_RATE64]) >= sizeof(bandwidth)) { ++ bandwidth = rta_getattr_u64(tb[TCA_CAKE_BASE_RATE64]); ++ 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, "ingress"); ++ else if(autorate) ++ fprintf(f, "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 CAKE_DIFFSERV_DIFFSERV3: ++ fprintf(f, "diffserv3 "); ++ break; ++ case CAKE_DIFFSERV_DIFFSERV4: ++ fprintf(f, "diffserv4 "); ++ break; ++ case CAKE_DIFFSERV_DIFFSERV8: ++ fprintf(f, "diffserv8 "); ++ break; ++ case CAKE_DIFFSERV_BESTEFFORT: ++ fprintf(f, "besteffort "); ++ break; ++ case CAKE_DIFFSERV_PRECEDENCE: ++ fprintf(f, "precedence "); ++ break; ++ default: ++ fprintf(f, "unknown "); ++ 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]); ++ switch(flowmode) { ++ case CAKE_FLOW_NONE: ++ fprintf(f, "flowblind "); ++ break; ++ case CAKE_FLOW_SRC_IP: ++ fprintf(f, "srchost "); ++ break; ++ case CAKE_FLOW_DST_IP: ++ fprintf(f, "dsthost "); ++ break; ++ case CAKE_FLOW_HOSTS: ++ fprintf(f, "hosts "); ++ break; ++ case CAKE_FLOW_FLOWS: ++ fprintf(f, "flows "); ++ break; ++ case CAKE_FLOW_DUAL_SRC: ++ fprintf(f, "dual-srchost "); ++ break; ++ case CAKE_FLOW_DUAL_DST: ++ fprintf(f, "dual-dsthost "); ++ break; ++ case CAKE_FLOW_TRIPLE: ++ fprintf(f, "triple-isolate "); ++ break; ++ default: ++ fprintf(f, "unknown "); ++ break; ++ }; ++ ++ } ++ ++ if (tb[TCA_CAKE_NAT] && ++ RTA_PAYLOAD(tb[TCA_CAKE_NAT]) >= sizeof(__u32)) { ++ nat = rta_getattr_u32(tb[TCA_CAKE_NAT]); ++ } ++ ++ 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(__s32)) { ++ overhead = *(__s32 *) RTA_DATA(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_SPLIT_GSO] && ++ RTA_PAYLOAD(tb[TCA_CAKE_SPLIT_GSO]) >= sizeof(__u32)) { ++ split_gso = rta_getattr_u32(tb[TCA_CAKE_SPLIT_GSO]); ++ } ++ if (tb[TCA_CAKE_RAW]) { ++ raw = 1; ++ } ++ 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 == CAKE_ACK_AGGRESSIVE) ++ fprintf(f, "ack-filter-aggresssive "); ++ else if (ack_filter == CAKE_ACK_FILTER) ++ fprintf(f, "ack-filter "); ++ else ++ fprintf(f, "no-ack-filter "); ++ ++ if (split_gso) ++ fprintf(f, "split-gso "); ++ ++ if (interval) ++ fprintf(f, "rtt %s ", sprint_time(interval, b2)); ++ ++ if (raw) ++ fprintf(f, "raw "); ++ ++ if (atm == CAKE_ATM_ATM) ++ fprintf(f, "atm "); ++ else if (atm == CAKE_ATM_PTM) ++ fprintf(f, "ptm "); ++ else if (!raw) ++ fprintf(f, "noatm "); ++ ++ fprintf(f, "overhead %d ", overhead); ++ ++ if (mpu) ++ fprintf(f, "mpu %u ", 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) ++{ ++ SPRINT_BUF(b1); ++ struct rtattr *st[TCA_CAKE_STATS_MAX + 1]; ++ int i; ++ ++ if (xstats == NULL) ++ return 0; ++ ++#define GET_STAT_U32(attr) rta_getattr_u32(st[TCA_CAKE_STATS_ ## attr]) ++#define GET_STAT_S32(attr) (*(__s32*)RTA_DATA(st[TCA_CAKE_STATS_ ## attr])) ++#define GET_STAT_U64(attr) rta_getattr_u64(st[TCA_CAKE_STATS_ ## attr]) ++ ++ parse_rtattr_nested(st, TCA_CAKE_STATS_MAX, xstats); ++ ++ if (st[TCA_CAKE_STATS_MEMORY_USED] && ++ st[TCA_CAKE_STATS_MEMORY_LIMIT]) { ++ fprintf(f, " memory used: %s", ++ sprint_size(GET_STAT_U32(MEMORY_USED), b1)); ++ ++ fprintf(f, " of %s\n", ++ sprint_size(GET_STAT_U32(MEMORY_LIMIT), b1)); ++ } ++ ++ if (st[TCA_CAKE_STATS_CAPACITY_ESTIMATE64]) { ++ fprintf(f, " capacity estimate: %s\n", ++ sprint_rate(GET_STAT_U64(CAPACITY_ESTIMATE64), b1)); ++ } ++ ++ if (st[TCA_CAKE_STATS_MIN_NETLEN] && ++ st[TCA_CAKE_STATS_MAX_NETLEN]) { ++ fprintf(f, " min/max network layer size: %8u", ++ GET_STAT_U32(MIN_NETLEN)); ++ fprintf(f, " /%8u\n", GET_STAT_U32(MAX_NETLEN)); ++ } ++ ++ if (st[TCA_CAKE_STATS_MIN_ADJLEN] && ++ st[TCA_CAKE_STATS_MAX_ADJLEN]) { ++ fprintf(f, " min/max overhead-adjusted size: %8u", ++ GET_STAT_U32(MIN_ADJLEN)); ++ fprintf(f, " /%8u\n", GET_STAT_U32(MAX_ADJLEN)); ++ } ++ ++ if (st[TCA_CAKE_STATS_AVG_NETOFF]) ++ fprintf(f, " average network hdr offset: %8u\n\n", ++ GET_STAT_U32(AVG_NETOFF)); ++ ++ /* class stats */ ++ if (st[TCA_CAKE_STATS_DEFICIT]) ++ fprintf(f, "deficit %u", ++ GET_STAT_S32(DEFICIT)); ++ if (st[TCA_CAKE_STATS_COBALT_COUNT]) ++ fprintf(f, "count %u", ++ GET_STAT_U32(COBALT_COUNT)); ++ ++ if (st[TCA_CAKE_STATS_DROPPING] && GET_STAT_U32(DROPPING)) { ++ fprintf(f, " dropping"); ++ if (st[TCA_CAKE_STATS_DROP_NEXT_US]) { ++ int drop_next = GET_STAT_S32(DROP_NEXT_US); ++ if (drop_next < 0) { ++ fprintf(f, " drop_next -%s", ++ sprint_time(drop_next, b1)); ++ } else { ++ fprintf(f, " drop_next %s", ++ sprint_time(drop_next, b1)); ++ } ++ } ++ } ++ ++ if (st[TCA_CAKE_STATS_P_DROP]) { ++ fprintf(f, " blue_prob %u", ++ GET_STAT_U32(P_DROP)); ++ if (st[TCA_CAKE_STATS_BLUE_TIMER_US]) { ++ int blue_timer = GET_STAT_S32(BLUE_TIMER_US); ++ if (blue_timer < 0) { ++ fprintf(f, " blue_timer -%s", ++ sprint_time(blue_timer, b1)); ++ } else { ++ fprintf(f, " blue_timer %s", ++ sprint_time(blue_timer, b1)); ++ } ++ } ++ } ++ ++#undef GET_STAT_U32 ++#undef GET_STAT_S32 ++#undef GET_STAT_U64 ++ ++ if (st[TCA_CAKE_STATS_TIN_STATS]) { ++ struct rtattr *tins[TC_CAKE_MAX_TINS + 1]; ++ struct rtattr *tstat[TC_CAKE_MAX_TINS][TCA_CAKE_TIN_STATS_MAX + 1]; ++ int num_tins = 0; ++ ++ parse_rtattr_nested(tins, TC_CAKE_MAX_TINS, st[TCA_CAKE_STATS_TIN_STATS]); ++ ++ for (i = 1; i <= TC_CAKE_MAX_TINS && tins[i]; i++) { ++ parse_rtattr_nested(tstat[i-1], TCA_CAKE_TIN_STATS_MAX, tins[i]); ++ num_tins++; ++ } ++ ++ if (!num_tins) ++ return 0; ++ ++ switch(num_tins) { ++ case 3: ++ fprintf(f, " Bulk Best Effort Voice\n"); ++ break; ++ ++ case 4: ++ fprintf(f, " Bulk Best Effort Video Voice\n"); ++ break; ++ ++ default: ++ fprintf(f, " "); ++ for(i=0; i < num_tins; i++) ++ fprintf(f, " Tin %u", i); ++ fprintf(f, "\n"); ++ }; ++ ++#define GET_TSTAT(i, attr) (tstat[i][TCA_CAKE_TIN_STATS_ ## attr]) ++#define PRINT_TSTAT(name, attr, fmts, val) do { \ ++ if (GET_TSTAT(0, attr)) { \ ++ fprintf(f, name); \ ++ for (i = 0; i < num_tins; i++) \ ++ fprintf(f, " %12" fmts, val); \ ++ fprintf(f, "\n"); \ ++ } \ ++ } while (0) ++ ++#define SPRINT_TSTAT(pfunc, type, name, attr) PRINT_TSTAT( \ ++ name, attr, "s", sprint_ ## pfunc( \ ++ rta_getattr_ ## type(GET_TSTAT(i, attr)), b1)) ++ ++#define PRINT_TSTAT_U32(name, attr) PRINT_TSTAT( \ ++ name, attr, "u", rta_getattr_u32(GET_TSTAT(i, attr))) ++ ++#define PRINT_TSTAT_U64(name, attr) PRINT_TSTAT( \ ++ name, attr, "llu", rta_getattr_u64(GET_TSTAT(i, attr))) ++ ++ SPRINT_TSTAT(rate, u64, " thresh ", THRESHOLD_RATE64); ++ SPRINT_TSTAT(time, u32, " target ", TARGET_US); ++ SPRINT_TSTAT(time, u32, " interval", INTERVAL_US); ++ SPRINT_TSTAT(time, u32, " pk_delay", PEAK_DELAY_US); ++ SPRINT_TSTAT(time, u32, " av_delay", AVG_DELAY_US); ++ SPRINT_TSTAT(time, u32, " sp_delay", BASE_DELAY_US); ++ SPRINT_TSTAT(size, u32, " backlog ", BACKLOG_BYTES); ++ ++ PRINT_TSTAT_U32(" pkts ", SENT_PACKETS); ++ PRINT_TSTAT_U64(" bytes ", SENT_BYTES64); ++ ++ PRINT_TSTAT_U32(" way_inds", WAY_INDIRECT_HITS); ++ PRINT_TSTAT_U32(" way_miss", WAY_MISSES); ++ PRINT_TSTAT_U32(" way_cols", WAY_COLLISIONS); ++ PRINT_TSTAT_U32(" drops ", DROPPED_PACKETS); ++ PRINT_TSTAT_U32(" marks ", ECN_MARKED_PACKETS); ++ PRINT_TSTAT_U32(" ack_drop", ACKS_DROPPED_PACKETS); ++ PRINT_TSTAT_U32(" sp_flows", SPARSE_FLOWS); ++ PRINT_TSTAT_U32(" bk_flows", BULK_FLOWS); ++ PRINT_TSTAT_U32(" un_flows", UNRESPONSIVE_FLOWS); ++ PRINT_TSTAT_U32(" max_len ", MAX_SKBLEN); ++ PRINT_TSTAT_U32(" quantum ", FLOW_QUANTUM); ++ ++#undef GET_STAT ++#undef PRINT_TSTAT ++#undef SPRINT_TSTAT ++#undef PRINT_TSTAT_U32 ++#undef PRINT_TSTAT_U64 ++ } ++ 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, ++}; |