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1663 lines
49 KiB
Diff
1663 lines
49 KiB
Diff
--- a/include/uapi/linux/pkt_sched.h
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+++ b/include/uapi/linux/pkt_sched.h
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@@ -934,4 +934,118 @@ enum {
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#define TCA_CBS_MAX (__TCA_CBS_MAX - 1)
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+/* CAKE */
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+enum {
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+ TCA_CAKE_UNSPEC,
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+ TCA_CAKE_PAD,
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+ TCA_CAKE_BASE_RATE64,
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+ TCA_CAKE_DIFFSERV_MODE,
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+ TCA_CAKE_ATM,
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+ TCA_CAKE_FLOW_MODE,
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+ TCA_CAKE_OVERHEAD,
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+ TCA_CAKE_RTT,
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+ TCA_CAKE_TARGET,
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+ TCA_CAKE_AUTORATE,
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+ TCA_CAKE_MEMORY,
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+ TCA_CAKE_NAT,
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+ TCA_CAKE_RAW, // was _ETHERNET
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+ TCA_CAKE_WASH,
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+ TCA_CAKE_MPU,
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+ TCA_CAKE_INGRESS,
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+ TCA_CAKE_ACK_FILTER,
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+ TCA_CAKE_SPLIT_GSO,
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+ __TCA_CAKE_MAX
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+};
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+#define TCA_CAKE_MAX (__TCA_CAKE_MAX - 1)
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+
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+enum {
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+ __TCA_CAKE_STATS_INVALID,
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+ TCA_CAKE_STATS_PAD,
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+ TCA_CAKE_STATS_CAPACITY_ESTIMATE64,
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+ TCA_CAKE_STATS_MEMORY_LIMIT,
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+ TCA_CAKE_STATS_MEMORY_USED,
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+ TCA_CAKE_STATS_AVG_NETOFF,
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+ TCA_CAKE_STATS_MIN_NETLEN,
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+ TCA_CAKE_STATS_MAX_NETLEN,
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+ TCA_CAKE_STATS_MIN_ADJLEN,
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+ TCA_CAKE_STATS_MAX_ADJLEN,
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+ TCA_CAKE_STATS_TIN_STATS,
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+ TCA_CAKE_STATS_DEFICIT,
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+ TCA_CAKE_STATS_COBALT_COUNT,
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+ TCA_CAKE_STATS_DROPPING,
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+ TCA_CAKE_STATS_DROP_NEXT_US,
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+ TCA_CAKE_STATS_P_DROP,
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+ TCA_CAKE_STATS_BLUE_TIMER_US,
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+ __TCA_CAKE_STATS_MAX
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+};
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+#define TCA_CAKE_STATS_MAX (__TCA_CAKE_STATS_MAX - 1)
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+
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+enum {
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+ __TCA_CAKE_TIN_STATS_INVALID,
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+ TCA_CAKE_TIN_STATS_PAD,
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+ TCA_CAKE_TIN_STATS_SENT_PACKETS,
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+ TCA_CAKE_TIN_STATS_SENT_BYTES64,
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+ TCA_CAKE_TIN_STATS_DROPPED_PACKETS,
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+ TCA_CAKE_TIN_STATS_DROPPED_BYTES64,
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+ TCA_CAKE_TIN_STATS_ACKS_DROPPED_PACKETS,
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+ TCA_CAKE_TIN_STATS_ACKS_DROPPED_BYTES64,
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+ TCA_CAKE_TIN_STATS_ECN_MARKED_PACKETS,
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+ TCA_CAKE_TIN_STATS_ECN_MARKED_BYTES64,
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+ TCA_CAKE_TIN_STATS_BACKLOG_PACKETS,
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+ TCA_CAKE_TIN_STATS_BACKLOG_BYTES,
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+ TCA_CAKE_TIN_STATS_THRESHOLD_RATE64,
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+ TCA_CAKE_TIN_STATS_TARGET_US,
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+ TCA_CAKE_TIN_STATS_INTERVAL_US,
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+ TCA_CAKE_TIN_STATS_WAY_INDIRECT_HITS,
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+ TCA_CAKE_TIN_STATS_WAY_MISSES,
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+ TCA_CAKE_TIN_STATS_WAY_COLLISIONS,
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+ TCA_CAKE_TIN_STATS_PEAK_DELAY_US,
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+ TCA_CAKE_TIN_STATS_AVG_DELAY_US,
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+ TCA_CAKE_TIN_STATS_BASE_DELAY_US,
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+ TCA_CAKE_TIN_STATS_SPARSE_FLOWS,
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+ TCA_CAKE_TIN_STATS_BULK_FLOWS,
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+ TCA_CAKE_TIN_STATS_UNRESPONSIVE_FLOWS,
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+ TCA_CAKE_TIN_STATS_MAX_SKBLEN,
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+ TCA_CAKE_TIN_STATS_FLOW_QUANTUM,
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+ __TCA_CAKE_TIN_STATS_MAX
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+};
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+#define TCA_CAKE_TIN_STATS_MAX (__TCA_CAKE_TIN_STATS_MAX - 1)
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+#define TC_CAKE_MAX_TINS (8)
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+
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+enum {
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+ CAKE_FLOW_NONE = 0,
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+ CAKE_FLOW_SRC_IP,
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+ CAKE_FLOW_DST_IP,
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+ CAKE_FLOW_HOSTS, /* = CAKE_FLOW_SRC_IP | CAKE_FLOW_DST_IP */
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+ CAKE_FLOW_FLOWS,
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+ CAKE_FLOW_DUAL_SRC, /* = CAKE_FLOW_SRC_IP | CAKE_FLOW_FLOWS */
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+ CAKE_FLOW_DUAL_DST, /* = CAKE_FLOW_DST_IP | CAKE_FLOW_FLOWS */
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+ CAKE_FLOW_TRIPLE, /* = CAKE_FLOW_HOSTS | CAKE_FLOW_FLOWS */
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+ CAKE_FLOW_MAX,
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+};
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+
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+enum {
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+ CAKE_DIFFSERV_DIFFSERV3 = 0,
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+ CAKE_DIFFSERV_DIFFSERV4,
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+ CAKE_DIFFSERV_DIFFSERV8,
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+ CAKE_DIFFSERV_BESTEFFORT,
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+ CAKE_DIFFSERV_PRECEDENCE,
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+ CAKE_DIFFSERV_MAX
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+};
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+
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+enum {
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+ CAKE_ACK_NONE = 0,
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+ CAKE_ACK_FILTER,
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+ CAKE_ACK_AGGRESSIVE,
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+ CAKE_ACK_MAX
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+};
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+
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+enum {
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+ CAKE_ATM_NONE = 0,
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+ CAKE_ATM_ATM,
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+ CAKE_ATM_PTM,
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+ CAKE_ATM_MAX
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+};
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+
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+
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#endif
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--- /dev/null
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+++ b/man/man8/tc-cake.8
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@@ -0,0 +1,710 @@
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+.TH CAKE 8 "19 July 2018" "iproute2" "Linux"
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+.SH NAME
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+CAKE \- Common Applications Kept Enhanced (CAKE)
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+.SH SYNOPSIS
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+.B tc qdisc ... cake
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+.br
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+[
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+.BR bandwidth
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+RATE |
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+.BR unlimited*
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+|
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+.BR autorate-ingress
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+]
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+.br
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+[
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+.BR rtt
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+TIME |
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+.BR datacentre
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+|
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+.BR lan
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+|
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+.BR metro
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+|
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+.BR regional
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+|
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+.BR internet*
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+|
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+.BR oceanic
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+|
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+.BR satellite
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+|
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+.BR interplanetary
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+]
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+.br
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+[
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+.BR besteffort
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+|
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+.BR diffserv8
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+|
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+.BR diffserv4
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+|
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+.BR diffserv3*
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+]
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+.br
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+[
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+.BR flowblind
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+|
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+.BR srchost
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+|
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+.BR dsthost
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+|
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+.BR hosts
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+|
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+.BR flows
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+|
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+.BR dual-srchost
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+|
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+.BR dual-dsthost
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+|
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+.BR triple-isolate*
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+]
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+.br
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+[
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+.BR nat
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+|
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+.BR nonat*
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+]
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+.br
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+[
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+.BR wash
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+|
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+.BR nowash*
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+]
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+.br
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+[
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+.BR split-gso*
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+|
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+.BR no-split-gso
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+]
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+.br
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+[
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+.BR ack-filter
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+|
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+.BR ack-filter-aggressive
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+|
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+.BR no-ack-filter*
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+]
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+.br
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+[
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+.BR memlimit
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+LIMIT ]
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+.br
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+[
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+.BR ptm
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+|
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+.BR atm
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+|
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+.BR noatm*
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+]
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+.br
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+[
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+.BR overhead
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+N |
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+.BR conservative
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+|
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+.BR raw*
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+]
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+.br
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+[
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+.BR mpu
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+N ]
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+.br
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+[
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+.BR ingress
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+|
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+.BR egress*
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+]
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+.br
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+(* marks defaults)
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+
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+
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+.SH DESCRIPTION
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+CAKE (Common Applications Kept Enhanced) is a shaping-capable queue discipline
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+which uses both AQM and FQ. It combines COBALT, which is an AQM algorithm
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+combining Codel and BLUE, a shaper which operates in deficit mode, and a variant
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+of DRR++ for flow isolation. 8-way set-associative hashing is used to virtually
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+eliminate hash collisions. Priority queuing is available through a simplified
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+diffserv implementation. Overhead compensation for various encapsulation
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+schemes is tightly integrated.
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+
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+All settings are optional; the default settings are chosen to be sensible in
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+most common deployments. Most people will only need to set the
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+.B bandwidth
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+parameter to get useful results, but reading the
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+.B Overhead Compensation
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+and
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+.B Round Trip Time
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+sections is strongly encouraged.
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+
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+.SH SHAPER PARAMETERS
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+CAKE uses a deficit-mode shaper, which does not exhibit the initial burst
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+typical of token-bucket shapers. It will automatically burst precisely as much
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+as required to maintain the configured throughput. As such, it is very
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+straightforward to configure.
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+.PP
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+.B unlimited
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+(default)
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+.br
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+ No limit on the bandwidth.
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+.PP
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+.B bandwidth
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+RATE
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+.br
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+ Set the shaper bandwidth. See
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+.BR tc(8)
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+or examples below for details of the RATE value.
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+.PP
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+.B autorate-ingress
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+.br
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+ Automatic capacity estimation based on traffic arriving at this qdisc.
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+This is most likely to be useful with cellular links, which tend to change
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+quality randomly. A
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+.B bandwidth
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+parameter can be used in conjunction to specify an initial estimate. The shaper
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+will periodically be set to a bandwidth slightly below the estimated rate. This
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+estimator cannot estimate the bandwidth of links downstream of itself.
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+
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+.SH OVERHEAD COMPENSATION PARAMETERS
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+The size of each packet on the wire may differ from that seen by Linux. The
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+following parameters allow CAKE to compensate for this difference by internally
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+considering each packet to be bigger than Linux informs it. To assist users who
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+are not expert network engineers, keywords have been provided to represent a
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+number of common link technologies.
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+
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+.SS Manual Overhead Specification
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+.B overhead
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+BYTES
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+.br
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+ Adds BYTES to the size of each packet. BYTES may be negative; values
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+between -64 and 256 (inclusive) are accepted.
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+.PP
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+.B mpu
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+BYTES
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+.br
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+ Rounds each packet (including overhead) up to a minimum length
|
|
+BYTES. BYTES may not be negative; values between 0 and 256 (inclusive)
|
|
+are accepted.
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+.PP
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+.B atm
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+.br
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+ Compensates for ATM cell framing, which is normally found on ADSL links.
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|
+This is performed after the
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+.B overhead
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|
+parameter above. ATM uses fixed 53-byte cells, each of which can carry 48 bytes
|
|
+payload.
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+.PP
|
|
+.B ptm
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|
+.br
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+ Compensates for PTM encoding, which is normally found on VDSL2 links and
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|
+uses a 64b/65b encoding scheme. It is even more efficient to simply
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|
+derate the specified shaper bandwidth by a factor of 64/65 or 0.984. See
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+ITU G.992.3 Annex N and IEEE 802.3 Section 61.3 for details.
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+.PP
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+.B noatm
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|
+.br
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+ Disables ATM and PTM compensation.
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+
|
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+.SS Failsafe Overhead Keywords
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|
+These two keywords are provided for quick-and-dirty setup. Use them if you
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|
+can't be bothered to read the rest of this section.
|
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+.PP
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|
+.B raw
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|
+(default)
|
|
+.br
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+ Turns off all overhead compensation in CAKE. The packet size reported
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+by Linux will be used directly.
|
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+.PP
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|
+ Other overhead keywords may be added after "raw". The effect of this is
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|
+to make the overhead compensation operate relative to the reported packet size,
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|
+not the underlying IP packet size.
|
|
+.PP
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|
+.B conservative
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|
+.br
|
|
+ Compensates for more overhead than is likely to occur on any
|
|
+widely-deployed link technology.
|
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+.br
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|
+ Equivalent to
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|
+.B overhead 48 atm.
|
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+
|
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+.SS ADSL Overhead Keywords
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|
+Most ADSL modems have a way to check which framing scheme is in use. Often this
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|
+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
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|
+of them implicitly set the
|
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+.B atm
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|
+flag.
|
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+.PP
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|
+.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 3600s.
|
|
+
|
|
+.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.
|
|
+
|
|
+.PP
|
|
+.B split-gso
|
|
+
|
|
+.br
|
|
+ This option controls whether CAKE will split General Segmentation
|
|
+Offload (GSO) super-packets into their on-the-wire components and
|
|
+dequeue them individually.
|
|
+
|
|
+.br
|
|
+Super-packets are created by the networking stack to improve efficiency.
|
|
+However, because they are larger they take longer to dequeue, which
|
|
+translates to higher latency for competing flows, especially at lower
|
|
+bandwidths. CAKE defaults to splitting GSO packets to achieve the lowest
|
|
+possible latency. At link speeds higher than 10 Gbps, setting the
|
|
+no-split-gso parameter can increase the maximum achievable throughput by
|
|
+retaining the full GSO packets.
|
|
+
|
|
+.SH OVERRIDING CLASSIFICATION WITH TC FILTERS
|
|
+
|
|
+CAKE supports overriding of its internal classification of packets through the
|
|
+tc filter mechanism. Packets can be assigned to different priority tins by
|
|
+setting the
|
|
+.B priority
|
|
+field on the skb, and the flow hashing can be overridden by setting the
|
|
+.B classid
|
|
+parameter.
|
|
+
|
|
+.PP
|
|
+.B Tin override
|
|
+
|
|
+.br
|
|
+ To assign a priority tin, the major number of the priority field needs
|
|
+to match the qdisc handle of the cake instance; if it does, the minor number
|
|
+will be interpreted as the tin index. For example, to classify all ICMP packets
|
|
+as 'bulk', the following filter can be used:
|
|
+
|
|
+.br
|
|
+ # tc qdisc replace dev eth0 handle 1: root cake diffserv3
|
|
+ # tc filter add dev eth0 parent 1: protocol ip prio 1 \\
|
|
+ u32 match icmp type 0 0 action skbedit priority 1:1
|
|
+
|
|
+.PP
|
|
+.B Flow hash override
|
|
+
|
|
+.br
|
|
+ To override flow hashing, the classid can be set. CAKE will interpret
|
|
+the major number of the classid as the host hash used in host isolation mode,
|
|
+and the minor number as the flow hash used for flow-based queueing. One or both
|
|
+of those can be set, and will be used if the relevant flow isolation parameter
|
|
+is set (i.e., the major number will be ignored if CAKE is not configured in
|
|
+hosts mode, and the minor number will be ignored if CAKE is not configured in
|
|
+flows mode).
|
|
+
|
|
+.br
|
|
+This example will assign all ICMP packets to the first queue:
|
|
+
|
|
+.br
|
|
+ # tc qdisc replace dev eth0 handle 1: root cake
|
|
+ # tc filter add dev eth0 parent 1: protocol ip prio 1 \\
|
|
+ u32 match icmp type 0 0 classid 0:1
|
|
+
|
|
+.br
|
|
+If only one of the host and flow overrides is set, CAKE will compute the other
|
|
+hash from the packet as normal. Note, however, that the host isolation mode
|
|
+works by assigning a host ID to the flow queue; so if overriding both host and
|
|
+flow, the same flow cannot have more than one host assigned. In addition, it is
|
|
+not possible to assign different source and destination host IDs through the
|
|
+override mechanism; if a host ID is assigned, it will be used as both source and
|
|
+destination host.
|
|
+
|
|
+
|
|
+
|
|
+.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: 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-htb (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/man/man8/tc.8
|
|
+++ b/man/man8/tc.8
|
|
@@ -795,6 +795,7 @@ was written by Alexey N. Kuznetsov and a
|
|
.BR tc-basic (8),
|
|
.BR tc-bfifo (8),
|
|
.BR tc-bpf (8),
|
|
+.BR tc-cake (8),
|
|
.BR tc-cbq (8),
|
|
.BR tc-cgroup (8),
|
|
.BR tc-choke (8),
|
|
--- a/tc/Makefile
|
|
+++ b/tc/Makefile
|
|
@@ -66,6 +66,7 @@ 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 +1,805 @@
|
|
+// 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 <inttypes.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 const char * diffserv_names[CAKE_DIFFSERV_MAX] = {
|
|
+ [CAKE_DIFFSERV_DIFFSERV3] = "diffserv3",
|
|
+ [CAKE_DIFFSERV_DIFFSERV4] = "diffserv4",
|
|
+ [CAKE_DIFFSERV_DIFFSERV8] = "diffserv8",
|
|
+ [CAKE_DIFFSERV_BESTEFFORT] = "besteffort",
|
|
+ [CAKE_DIFFSERV_PRECEDENCE] = "precedence",
|
|
+};
|
|
+
|
|
+static const char * flowmode_names[CAKE_FLOW_MAX] = {
|
|
+ [CAKE_FLOW_NONE] = "flowblind",
|
|
+ [CAKE_FLOW_SRC_IP] = "srchost",
|
|
+ [CAKE_FLOW_DST_IP] = "dsthost",
|
|
+ [CAKE_FLOW_HOSTS] = "hosts",
|
|
+ [CAKE_FLOW_FLOWS] = "flows",
|
|
+ [CAKE_FLOW_DUAL_SRC] = "dual-srchost",
|
|
+ [CAKE_FLOW_DUAL_DST] = "dual-dsthost",
|
|
+ [CAKE_FLOW_TRIPLE] = "triple-isolate",
|
|
+};
|
|
+
|
|
+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"
|
|
+" [ split-gso* | no-split-gso ]\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)
|
|
+{
|
|
+ struct cake_preset *preset, *preset_set = NULL;
|
|
+ bool overhead_override = false;
|
|
+ bool overhead_set = false;
|
|
+ unsigned int interval = 0;
|
|
+ unsigned int diffserv = 0;
|
|
+ unsigned int memlimit = 0;
|
|
+ unsigned int target = 0;
|
|
+ __u64 bandwidth = 0;
|
|
+ int ack_filter = -1;
|
|
+ struct rtattr *tail;
|
|
+ int split_gso = -1;
|
|
+ int unlimited = 0;
|
|
+ int flowmode = -1;
|
|
+ int autorate = -1;
|
|
+ int ingress = -1;
|
|
+ int overhead = 0;
|
|
+ int wash = -1;
|
|
+ int nat = -1;
|
|
+ int atm = -1;
|
|
+ int mpu = 0;
|
|
+
|
|
+ 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, "split-gso") == 0) {
|
|
+ split_gso = 1;
|
|
+ } else if (strcmp(*argv, "no-split-gso") == 0) {
|
|
+ split_gso = 0;
|
|
+ } 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 int 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 (split_gso != -1)
|
|
+ addattr_l(n, 1024, TCA_CAKE_SPLIT_GSO, &split_gso,
|
|
+ sizeof(split_gso));
|
|
+ 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 void cake_print_mode(unsigned int value, unsigned int max,
|
|
+ const char *key, const char **table)
|
|
+{
|
|
+ if (value < max && table[value]) {
|
|
+ print_string(PRINT_ANY, key, "%s ", table[value]);
|
|
+ } else {
|
|
+ print_string(PRINT_JSON, key, NULL, "unknown");
|
|
+ print_string(PRINT_FP, NULL, "(?%s?)", key);
|
|
+ }
|
|
+}
|
|
+
|
|
+static int cake_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
|
|
+{
|
|
+ struct rtattr *tb[TCA_CAKE_MAX + 1];
|
|
+ unsigned int interval = 0;
|
|
+ unsigned int memlimit = 0;
|
|
+ __u64 bandwidth = 0;
|
|
+ int ack_filter = 0;
|
|
+ int split_gso = 0;
|
|
+ int overhead = 0;
|
|
+ int autorate = 0;
|
|
+ int ingress = 0;
|
|
+ int wash = 0;
|
|
+ int raw = 0;
|
|
+ int mpu = 0;
|
|
+ int atm = 0;
|
|
+ int nat = 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) {
|
|
+ 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)
|
|
+ print_string(PRINT_ANY, "autorate", "%s ",
|
|
+ "autorate-ingress");
|
|
+ else if (autorate)
|
|
+ print_string(PRINT_ANY, "autorate", "(?autorate?) ",
|
|
+ "unknown");
|
|
+ }
|
|
+ if (tb[TCA_CAKE_DIFFSERV_MODE] &&
|
|
+ RTA_PAYLOAD(tb[TCA_CAKE_DIFFSERV_MODE]) >= sizeof(__u32)) {
|
|
+ cake_print_mode(rta_getattr_u32(tb[TCA_CAKE_DIFFSERV_MODE]),
|
|
+ CAKE_DIFFSERV_MAX, "diffserv", diffserv_names);
|
|
+ }
|
|
+ if (tb[TCA_CAKE_FLOW_MODE] &&
|
|
+ RTA_PAYLOAD(tb[TCA_CAKE_FLOW_MODE]) >= sizeof(__u32)) {
|
|
+ cake_print_mode(rta_getattr_u32(tb[TCA_CAKE_FLOW_MODE]),
|
|
+ CAKE_FLOW_MAX, "flowmode", flowmode_names);
|
|
+ }
|
|
+
|
|
+ if (tb[TCA_CAKE_NAT] &&
|
|
+ RTA_PAYLOAD(tb[TCA_CAKE_NAT]) >= sizeof(__u32)) {
|
|
+ nat = rta_getattr_u32(tb[TCA_CAKE_NAT]);
|
|
+ }
|
|
+
|
|
+ if (nat)
|
|
+ print_string(PRINT_FP, NULL, "nat ", NULL);
|
|
+ else
|
|
+ print_string(PRINT_FP, NULL, "nonat ", NULL);
|
|
+ print_bool(PRINT_JSON, "nat", NULL, 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)
|
|
+ print_string(PRINT_FP, NULL, "wash ", NULL);
|
|
+ else
|
|
+ print_string(PRINT_FP, NULL, "nowash ", NULL);
|
|
+ print_bool(PRINT_JSON, "wash", NULL, wash);
|
|
+
|
|
+ if (ingress)
|
|
+ print_string(PRINT_FP, NULL, "ingress ", NULL);
|
|
+ print_bool(PRINT_JSON, "ingress", NULL, ingress);
|
|
+
|
|
+ if (ack_filter == CAKE_ACK_AGGRESSIVE)
|
|
+ print_string(PRINT_ANY, "ack-filter", "ack-filter-%s ",
|
|
+ "aggressive");
|
|
+ else if (ack_filter == CAKE_ACK_FILTER)
|
|
+ print_string(PRINT_ANY, "ack-filter", "ack-filter ", "enabled");
|
|
+ else
|
|
+ print_string(PRINT_ANY, "ack-filter", "no-ack-filter ", "disabled");
|
|
+
|
|
+ if (split_gso)
|
|
+ print_string(PRINT_FP, NULL, "split-gso ", NULL);
|
|
+ else
|
|
+ print_string(PRINT_FP, NULL, "no-split-gso ", NULL);
|
|
+ print_bool(PRINT_JSON, "split_gso", NULL, split_gso);
|
|
+
|
|
+ if (interval)
|
|
+ print_string(PRINT_FP, NULL, "rtt %s ",
|
|
+ sprint_time(interval, b2));
|
|
+ print_uint(PRINT_JSON, "rtt", NULL, interval);
|
|
+
|
|
+ if (raw)
|
|
+ print_string(PRINT_FP, NULL, "raw ", NULL);
|
|
+ print_bool(PRINT_JSON, "raw", NULL, raw);
|
|
+
|
|
+ if (atm == CAKE_ATM_ATM)
|
|
+ print_string(PRINT_ANY, "atm", "%s ", "atm");
|
|
+ else if (atm == CAKE_ATM_PTM)
|
|
+ print_string(PRINT_ANY, "atm", "%s ", "ptm");
|
|
+ else if (!raw)
|
|
+ print_string(PRINT_ANY, "atm", "%s ", "noatm");
|
|
+
|
|
+ print_int(PRINT_ANY, "overhead", "overhead %d ", overhead);
|
|
+
|
|
+ if (mpu)
|
|
+ print_uint(PRINT_ANY, "mpu", "mpu %u ", mpu);
|
|
+
|
|
+ if (memlimit) {
|
|
+ print_uint(PRINT_JSON, "memlimit", NULL, memlimit);
|
|
+ print_string(PRINT_FP, NULL, "memlimit %s",
|
|
+ sprint_size(memlimit, b1));
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void cake_print_json_tin(struct rtattr **tstat)
|
|
+{
|
|
+#define PRINT_TSTAT_JSON(type, name, attr) if (tstat[TCA_CAKE_TIN_STATS_ ## attr]) \
|
|
+ print_u64(PRINT_JSON, name, NULL, \
|
|
+ rta_getattr_ ## type((struct rtattr *) \
|
|
+ tstat[TCA_CAKE_TIN_STATS_ ## attr]))
|
|
+
|
|
+ open_json_object(NULL);
|
|
+ PRINT_TSTAT_JSON(u64, "threshold_rate", THRESHOLD_RATE64);
|
|
+ PRINT_TSTAT_JSON(u64, "sent_bytes", SENT_BYTES64);
|
|
+ PRINT_TSTAT_JSON(u32, "backlog_bytes", BACKLOG_BYTES);
|
|
+ PRINT_TSTAT_JSON(u32, "target_us", TARGET_US);
|
|
+ PRINT_TSTAT_JSON(u32, "interval_us", INTERVAL_US);
|
|
+ PRINT_TSTAT_JSON(u32, "peak_delay_us", PEAK_DELAY_US);
|
|
+ PRINT_TSTAT_JSON(u32, "avg_delay_us", AVG_DELAY_US);
|
|
+ PRINT_TSTAT_JSON(u32, "base_delay_us", BASE_DELAY_US);
|
|
+ PRINT_TSTAT_JSON(u32, "sent_packets", SENT_PACKETS);
|
|
+ PRINT_TSTAT_JSON(u32, "way_indirect_hits", WAY_INDIRECT_HITS);
|
|
+ PRINT_TSTAT_JSON(u32, "way_misses", WAY_MISSES);
|
|
+ PRINT_TSTAT_JSON(u32, "way_collisions", WAY_COLLISIONS);
|
|
+ PRINT_TSTAT_JSON(u32, "drops", DROPPED_PACKETS);
|
|
+ PRINT_TSTAT_JSON(u32, "ecn_mark", ECN_MARKED_PACKETS);
|
|
+ PRINT_TSTAT_JSON(u32, "ack_drops", ACKS_DROPPED_PACKETS);
|
|
+ PRINT_TSTAT_JSON(u32, "sparse_flows", SPARSE_FLOWS);
|
|
+ PRINT_TSTAT_JSON(u32, "bulk_flows", BULK_FLOWS);
|
|
+ PRINT_TSTAT_JSON(u32, "unresponsive_flows", UNRESPONSIVE_FLOWS);
|
|
+ PRINT_TSTAT_JSON(u32, "max_pkt_len", MAX_SKBLEN);
|
|
+ PRINT_TSTAT_JSON(u32, "flow_quantum", FLOW_QUANTUM);
|
|
+ close_json_object();
|
|
+
|
|
+#undef PRINT_TSTAT_JSON
|
|
+}
|
|
+
|
|
+static int cake_print_xstats(struct qdisc_util *qu, FILE *f,
|
|
+ struct rtattr *xstats)
|
|
+{
|
|
+ struct rtattr *st[TCA_CAKE_STATS_MAX + 1];
|
|
+ SPRINT_BUF(b1);
|
|
+ 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]) {
|
|
+ print_string(PRINT_FP, NULL, " memory used: %s",
|
|
+ sprint_size(GET_STAT_U32(MEMORY_USED), b1));
|
|
+
|
|
+ print_string(PRINT_FP, NULL, " of %s\n",
|
|
+ sprint_size(GET_STAT_U32(MEMORY_LIMIT), b1));
|
|
+
|
|
+ print_uint(PRINT_JSON, "memory_used", NULL,
|
|
+ GET_STAT_U32(MEMORY_USED));
|
|
+ print_uint(PRINT_JSON, "memory_limit", NULL,
|
|
+ GET_STAT_U32(MEMORY_LIMIT));
|
|
+ }
|
|
+
|
|
+ if (st[TCA_CAKE_STATS_CAPACITY_ESTIMATE64]) {
|
|
+ print_string(PRINT_FP, NULL, " capacity estimate: %s\n",
|
|
+ sprint_rate(GET_STAT_U64(CAPACITY_ESTIMATE64), b1));
|
|
+ print_uint(PRINT_JSON, "capacity_estimate", NULL,
|
|
+ GET_STAT_U64(CAPACITY_ESTIMATE64));
|
|
+ }
|
|
+
|
|
+ if (st[TCA_CAKE_STATS_MIN_NETLEN] &&
|
|
+ st[TCA_CAKE_STATS_MAX_NETLEN]) {
|
|
+ print_uint(PRINT_ANY, "min_network_size",
|
|
+ " min/max network layer size: %12u",
|
|
+ GET_STAT_U32(MIN_NETLEN));
|
|
+ print_uint(PRINT_ANY, "max_network_size",
|
|
+ " /%8u\n", GET_STAT_U32(MAX_NETLEN));
|
|
+ }
|
|
+
|
|
+ if (st[TCA_CAKE_STATS_MIN_ADJLEN] &&
|
|
+ st[TCA_CAKE_STATS_MAX_ADJLEN]) {
|
|
+ print_uint(PRINT_ANY, "min_adj_size",
|
|
+ " min/max overhead-adjusted size: %8u",
|
|
+ GET_STAT_U32(MIN_ADJLEN));
|
|
+ print_uint(PRINT_ANY, "max_adj_size",
|
|
+ " /%8u\n", GET_STAT_U32(MAX_ADJLEN));
|
|
+ }
|
|
+
|
|
+ if (st[TCA_CAKE_STATS_AVG_NETOFF])
|
|
+ print_uint(PRINT_ANY, "avg_hdr_offset",
|
|
+ " average network hdr offset: %12u\n\n",
|
|
+ GET_STAT_U32(AVG_NETOFF));
|
|
+
|
|
+ /* class stats */
|
|
+ if (st[TCA_CAKE_STATS_DEFICIT])
|
|
+ print_int(PRINT_ANY, "deficit", " deficit %u",
|
|
+ GET_STAT_S32(DEFICIT));
|
|
+ if (st[TCA_CAKE_STATS_COBALT_COUNT])
|
|
+ print_uint(PRINT_ANY, "count", " count %u",
|
|
+ GET_STAT_U32(COBALT_COUNT));
|
|
+
|
|
+ if (st[TCA_CAKE_STATS_DROPPING] && GET_STAT_U32(DROPPING)) {
|
|
+ print_bool(PRINT_ANY, "dropping", " dropping", true);
|
|
+ if (st[TCA_CAKE_STATS_DROP_NEXT_US]) {
|
|
+ int drop_next = GET_STAT_S32(DROP_NEXT_US);
|
|
+
|
|
+ if (drop_next < 0) {
|
|
+ print_string(PRINT_FP, NULL, " drop_next -%s",
|
|
+ sprint_time(drop_next, b1));
|
|
+ } else {
|
|
+ print_uint(PRINT_JSON, "drop_next", NULL,
|
|
+ drop_next);
|
|
+ print_string(PRINT_FP, NULL, " drop_next %s",
|
|
+ sprint_time(drop_next, b1));
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+
|
|
+ if (st[TCA_CAKE_STATS_P_DROP]) {
|
|
+ print_uint(PRINT_ANY, "blue_prob", " 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) {
|
|
+ print_string(PRINT_FP, NULL, " blue_timer -%s",
|
|
+ sprint_time(blue_timer, b1));
|
|
+ } else {
|
|
+ print_uint(PRINT_JSON, "blue_timer", NULL,
|
|
+ blue_timer);
|
|
+ print_string(PRINT_FP, NULL, " 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 *tstat[TC_CAKE_MAX_TINS][TCA_CAKE_TIN_STATS_MAX + 1];
|
|
+ struct rtattr *tins[TC_CAKE_MAX_TINS + 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;
|
|
+
|
|
+ if (is_json_context()) {
|
|
+ open_json_array(PRINT_JSON, "tins");
|
|
+ for (i = 0; i < num_tins; i++)
|
|
+ cake_print_json_tin(tstat[i]);
|
|
+ close_json_array(PRINT_JSON, NULL);
|
|
+
|
|
+ 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,
|
|
+};
|