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-rw-r--r--networking/libiproute/linux/pkt_sched.h413
1 files changed, 413 insertions, 0 deletions
diff --git a/networking/libiproute/linux/pkt_sched.h b/networking/libiproute/linux/pkt_sched.h
new file mode 100644
index 000000000..e174588f5
--- /dev/null
+++ b/networking/libiproute/linux/pkt_sched.h
@@ -0,0 +1,413 @@
+#ifndef __LINUX_PKT_SCHED_H
+#define __LINUX_PKT_SCHED_H
+
+/* Logical priority bands not depending on specific packet scheduler.
+ Every scheduler will map them to real traffic classes, if it has
+ no more precise mechanism to classify packets.
+
+ These numbers have no special meaning, though their coincidence
+ with obsolete IPv6 values is not occasional :-). New IPv6 drafts
+ preferred full anarchy inspired by diffserv group.
+
+ Note: TC_PRIO_BESTEFFORT does not mean that it is the most unhappy
+ class, actually, as rule it will be handled with more care than
+ filler or even bulk.
+ */
+
+#include <asm/types.h>
+
+#define TC_PRIO_BESTEFFORT 0
+#define TC_PRIO_FILLER 1
+#define TC_PRIO_BULK 2
+#define TC_PRIO_INTERACTIVE_BULK 4
+#define TC_PRIO_INTERACTIVE 6
+#define TC_PRIO_CONTROL 7
+
+#define TC_PRIO_MAX 15
+
+/* Generic queue statistics, available for all the elements.
+ Particular schedulers may have also their private records.
+ */
+
+struct tc_stats
+{
+ __u64 bytes; /* NUmber of enqueues bytes */
+ __u32 packets; /* Number of enqueued packets */
+ __u32 drops; /* Packets dropped because of lack of resources */
+ __u32 overlimits; /* Number of throttle events when this
+ * flow goes out of allocated bandwidth */
+ __u32 bps; /* Current flow byte rate */
+ __u32 pps; /* Current flow packet rate */
+ __u32 qlen;
+ __u32 backlog;
+#ifdef __KERNEL__
+ spinlock_t *lock;
+#endif
+};
+
+struct tc_estimator
+{
+ char interval;
+ unsigned char ewma_log;
+};
+
+/* "Handles"
+ ---------
+
+ All the traffic control objects have 32bit identifiers, or "handles".
+
+ They can be considered as opaque numbers from user API viewpoint,
+ but actually they always consist of two fields: major and
+ minor numbers, which are interpreted by kernel specially,
+ that may be used by applications, though not recommended.
+
+ F.e. qdisc handles always have minor number equal to zero,
+ classes (or flows) have major equal to parent qdisc major, and
+ minor uniquely identifying class inside qdisc.
+
+ Macros to manipulate handles:
+ */
+
+#define TC_H_MAJ_MASK (0xFFFF0000U)
+#define TC_H_MIN_MASK (0x0000FFFFU)
+#define TC_H_MAJ(h) ((h)&TC_H_MAJ_MASK)
+#define TC_H_MIN(h) ((h)&TC_H_MIN_MASK)
+#define TC_H_MAKE(maj,min) (((maj)&TC_H_MAJ_MASK)|((min)&TC_H_MIN_MASK))
+
+#define TC_H_UNSPEC (0U)
+#define TC_H_ROOT (0xFFFFFFFFU)
+#define TC_H_INGRESS (0xFFFFFFF1U)
+
+struct tc_ratespec
+{
+ unsigned char cell_log;
+ unsigned char __reserved;
+ unsigned short feature;
+ short addend;
+ unsigned short mpu;
+ __u32 rate;
+};
+
+/* FIFO section */
+
+struct tc_fifo_qopt
+{
+ __u32 limit; /* Queue length: bytes for bfifo, packets for pfifo */
+};
+
+/* PRIO section */
+
+#define TCQ_PRIO_BANDS 16
+
+struct tc_prio_qopt
+{
+ int bands; /* Number of bands */
+ __u8 priomap[TC_PRIO_MAX+1]; /* Map: logical priority -> PRIO band */
+};
+
+/* CSZ section */
+
+struct tc_csz_qopt
+{
+ int flows; /* Maximal number of guaranteed flows */
+ unsigned char R_log; /* Fixed point position for round number */
+ unsigned char delta_log; /* Log of maximal managed time interval */
+ __u8 priomap[TC_PRIO_MAX+1]; /* Map: logical priority -> CSZ band */
+};
+
+struct tc_csz_copt
+{
+ struct tc_ratespec slice;
+ struct tc_ratespec rate;
+ struct tc_ratespec peakrate;
+ __u32 limit;
+ __u32 buffer;
+ __u32 mtu;
+};
+
+enum
+{
+ TCA_CSZ_UNSPEC,
+ TCA_CSZ_PARMS,
+ TCA_CSZ_RTAB,
+ TCA_CSZ_PTAB,
+};
+
+/* TBF section */
+
+struct tc_tbf_qopt
+{
+ struct tc_ratespec rate;
+ struct tc_ratespec peakrate;
+ __u32 limit;
+ __u32 buffer;
+ __u32 mtu;
+};
+
+enum
+{
+ TCA_TBF_UNSPEC,
+ TCA_TBF_PARMS,
+ TCA_TBF_RTAB,
+ TCA_TBF_PTAB,
+};
+
+
+/* TEQL section */
+
+/* TEQL does not require any parameters */
+
+/* SFQ section */
+
+struct tc_sfq_qopt
+{
+ unsigned quantum; /* Bytes per round allocated to flow */
+ int perturb_period; /* Period of hash perturbation */
+ __u32 limit; /* Maximal packets in queue */
+ unsigned divisor; /* Hash divisor */
+ unsigned flows; /* Maximal number of flows */
+};
+
+/*
+ * NOTE: limit, divisor and flows are hardwired to code at the moment.
+ *
+ * limit=flows=128, divisor=1024;
+ *
+ * The only reason for this is efficiency, it is possible
+ * to change these parameters in compile time.
+ */
+
+/* RED section */
+
+enum
+{
+ TCA_RED_UNSPEC,
+ TCA_RED_PARMS,
+ TCA_RED_STAB,
+};
+
+struct tc_red_qopt
+{
+ __u32 limit; /* HARD maximal queue length (bytes) */
+ __u32 qth_min; /* Min average length threshold (bytes) */
+ __u32 qth_max; /* Max average length threshold (bytes) */
+ unsigned char Wlog; /* log(W) */
+ unsigned char Plog; /* log(P_max/(qth_max-qth_min)) */
+ unsigned char Scell_log; /* cell size for idle damping */
+ unsigned char flags;
+#define TC_RED_ECN 1
+};
+
+struct tc_red_xstats
+{
+ __u32 early; /* Early drops */
+ __u32 pdrop; /* Drops due to queue limits */
+ __u32 other; /* Drops due to drop() calls */
+ __u32 marked; /* Marked packets */
+};
+
+/* GRED section */
+
+#define MAX_DPs 16
+
+enum
+{
+ TCA_GRED_UNSPEC,
+ TCA_GRED_PARMS,
+ TCA_GRED_STAB,
+ TCA_GRED_DPS,
+};
+
+#define TCA_SET_OFF TCA_GRED_PARMS
+struct tc_gred_qopt
+{
+ __u32 limit; /* HARD maximal queue length (bytes)
+*/
+ __u32 qth_min; /* Min average length threshold (bytes)
+*/
+ __u32 qth_max; /* Max average length threshold (bytes)
+*/
+ __u32 DP; /* upto 2^32 DPs */
+ __u32 backlog;
+ __u32 qave;
+ __u32 forced;
+ __u32 early;
+ __u32 other;
+ __u32 pdrop;
+
+ unsigned char Wlog; /* log(W) */
+ unsigned char Plog; /* log(P_max/(qth_max-qth_min)) */
+ unsigned char Scell_log; /* cell size for idle damping */
+ __u8 prio; /* prio of this VQ */
+ __u32 packets;
+ __u32 bytesin;
+};
+/* gred setup */
+struct tc_gred_sopt
+{
+ __u32 DPs;
+ __u32 def_DP;
+ __u8 grio;
+};
+
+/* HTB section */
+#define TC_HTB_NUMPRIO 4
+#define TC_HTB_MAXDEPTH 4
+
+struct tc_htb_opt
+{
+ struct tc_ratespec rate;
+ struct tc_ratespec ceil;
+ __u32 buffer;
+ __u32 cbuffer;
+ __u32 quantum; /* out only */
+ __u32 level; /* out only */
+ __u8 prio;
+ __u8 injectd; /* inject class distance */
+ __u8 pad[2];
+};
+struct tc_htb_glob
+{
+ __u32 rate2quantum; /* bps->quantum divisor */
+ __u32 defcls; /* default class number */
+ __u32 use_dcache; /* use dequeue cache ? */
+ __u32 debug; /* debug flags */
+
+
+ /* stats */
+ __u32 deq_rate; /* dequeue rate */
+ __u32 utilz; /* dequeue utilization */
+ __u32 trials; /* deq_prio trials per dequeue */
+ __u32 dcache_hits;
+ __u32 direct_pkts; /* count of non shapped packets */
+};
+enum
+{
+ TCA_HTB_UNSPEC,
+ TCA_HTB_PARMS,
+ TCA_HTB_INIT,
+ TCA_HTB_CTAB,
+ TCA_HTB_RTAB,
+};
+struct tc_htb_xstats
+{
+ __u32 lends;
+ __u32 borrows;
+ __u32 giants; /* too big packets (rate will not be accurate) */
+ __u32 injects; /* how many times leaf used injected bw */
+ __u32 tokens;
+ __u32 ctokens;
+};
+
+/* CBQ section */
+
+#define TC_CBQ_MAXPRIO 8
+#define TC_CBQ_MAXLEVEL 8
+#define TC_CBQ_DEF_EWMA 5
+
+struct tc_cbq_lssopt
+{
+ unsigned char change;
+ unsigned char flags;
+#define TCF_CBQ_LSS_BOUNDED 1
+#define TCF_CBQ_LSS_ISOLATED 2
+ unsigned char ewma_log;
+ unsigned char level;
+#define TCF_CBQ_LSS_FLAGS 1
+#define TCF_CBQ_LSS_EWMA 2
+#define TCF_CBQ_LSS_MAXIDLE 4
+#define TCF_CBQ_LSS_MINIDLE 8
+#define TCF_CBQ_LSS_OFFTIME 0x10
+#define TCF_CBQ_LSS_AVPKT 0x20
+ __u32 maxidle;
+ __u32 minidle;
+ __u32 offtime;
+ __u32 avpkt;
+};
+
+struct tc_cbq_wrropt
+{
+ unsigned char flags;
+ unsigned char priority;
+ unsigned char cpriority;
+ unsigned char __reserved;
+ __u32 allot;
+ __u32 weight;
+};
+
+struct tc_cbq_ovl
+{
+ unsigned char strategy;
+#define TC_CBQ_OVL_CLASSIC 0
+#define TC_CBQ_OVL_DELAY 1
+#define TC_CBQ_OVL_LOWPRIO 2
+#define TC_CBQ_OVL_DROP 3
+#define TC_CBQ_OVL_RCLASSIC 4
+ unsigned char priority2;
+ __u32 penalty;
+};
+
+struct tc_cbq_police
+{
+ unsigned char police;
+ unsigned char __res1;
+ unsigned short __res2;
+};
+
+struct tc_cbq_fopt
+{
+ __u32 split;
+ __u32 defmap;
+ __u32 defchange;
+};
+
+struct tc_cbq_xstats
+{
+ __u32 borrows;
+ __u32 overactions;
+ __s32 avgidle;
+ __s32 undertime;
+};
+
+enum
+{
+ TCA_CBQ_UNSPEC,
+ TCA_CBQ_LSSOPT,
+ TCA_CBQ_WRROPT,
+ TCA_CBQ_FOPT,
+ TCA_CBQ_OVL_STRATEGY,
+ TCA_CBQ_RATE,
+ TCA_CBQ_RTAB,
+ TCA_CBQ_POLICE,
+};
+
+#define TCA_CBQ_MAX TCA_CBQ_POLICE
+
+/* dsmark section */
+
+enum {
+ TCA_DSMARK_UNSPEC,
+ TCA_DSMARK_INDICES,
+ TCA_DSMARK_DEFAULT_INDEX,
+ TCA_DSMARK_SET_TC_INDEX,
+ TCA_DSMARK_MASK,
+ TCA_DSMARK_VALUE
+};
+
+#define TCA_DSMARK_MAX TCA_DSMARK_VALUE
+
+/* ATM section */
+
+enum {
+ TCA_ATM_UNSPEC,
+ TCA_ATM_FD, /* file/socket descriptor */
+ TCA_ATM_PTR, /* pointer to descriptor - later */
+ TCA_ATM_HDR, /* LL header */
+ TCA_ATM_EXCESS, /* excess traffic class (0 for CLP) */
+ TCA_ATM_ADDR, /* PVC address (for output only) */
+ TCA_ATM_STATE /* VC state (ATM_VS_*; for output only) */
+};
+
+#define TCA_ATM_MAX TCA_ATM_STATE
+
+#endif
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