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sched: keep track of RED drops

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Add new statistic to keep track of drops due to RED.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Stephen Hemminger 2015-11-29 10:46:47 -08:00 committed by Thomas Monjalon
parent 4758404a30
commit 4d51afb5cd
3 changed files with 24 additions and 7 deletions
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3
doc/guides/rel_notes/deprecation.rst
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@ -33,6 +33,3 @@ Deprecation Notices
* ABI changes are planned for adding four new flow types. This impacts
RTE_ETH_FLOW_MAX. The release 2.2 does not contain these ABI changes,
but release 2.3 will.
* The scheduler statistics structure will change to allow keeping track of
RED actions.

20
lib/librte_sched/rte_sched.c
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@ -1076,7 +1076,9 @@ rte_sched_port_update_subport_stats(struct rte_sched_port *port, uint32_t qindex
}
static inline void
rte_sched_port_update_subport_stats_on_drop(struct rte_sched_port *port, uint32_t qindex, struct rte_mbuf *pkt)
rte_sched_port_update_subport_stats_on_drop(struct rte_sched_port *port,
uint32_t qindex,
struct rte_mbuf *pkt, uint32_t red)
{
struct rte_sched_subport *s = port->subport + (qindex / rte_sched_port_queues_per_subport(port));
uint32_t tc_index = (qindex >> 2) & 0x3;
@ -1084,6 +1086,9 @@ rte_sched_port_update_subport_stats_on_drop(struct rte_sched_port *port, uint32_
s->stats.n_pkts_tc_dropped[tc_index] += 1;
s->stats.n_bytes_tc_dropped[tc_index] += pkt_len;
#ifdef RTE_SCHED_RED
s->stats.n_pkts_red_dropped[tc_index] += red;
#endif
}
static inline void
@ -1097,13 +1102,18 @@ rte_sched_port_update_queue_stats(struct rte_sched_port *port, uint32_t qindex,
}
static inline void
rte_sched_port_update_queue_stats_on_drop(struct rte_sched_port *port, uint32_t qindex, struct rte_mbuf *pkt)
rte_sched_port_update_queue_stats_on_drop(struct rte_sched_port *port,
uint32_t qindex,
struct rte_mbuf *pkt, uint32_t red)
{
struct rte_sched_queue_extra *qe = port->queue_extra + qindex;
uint32_t pkt_len = pkt->pkt_len;
qe->stats.n_pkts_dropped += 1;
qe->stats.n_bytes_dropped += pkt_len;
#ifdef RTE_SCHED_RED
qe->stats.n_pkts_red_dropped += red;
#endif
}
#endif /* RTE_SCHED_COLLECT_STATS */
@ -1234,8 +1244,10 @@ rte_sched_port_enqueue_qwa(struct rte_sched_port *port, uint32_t qindex,
(qlen >= qsize))) {
rte_pktmbuf_free(pkt);
#ifdef RTE_SCHED_COLLECT_STATS
rte_sched_port_update_subport_stats_on_drop(port, qindex, pkt);
rte_sched_port_update_queue_stats_on_drop(port, qindex, pkt);
rte_sched_port_update_subport_stats_on_drop(port, qindex, pkt,
qlen < qsize);
rte_sched_port_update_queue_stats_on_drop(port, qindex, pkt,
qlen < qsize);
#endif
return 0;
}

8
lib/librte_sched/rte_sched.h
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@ -162,6 +162,11 @@ struct rte_sched_subport_stats {
/**< Number of bytes successfully written for each traffic class */
uint32_t n_bytes_tc_dropped[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE];
/**< Number of bytes dropped for each traffic class */
#ifdef RTE_SCHED_RED
uint32_t n_pkts_red_dropped[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE];
/**< Number of packets dropped by red */
#endif
};
/*
@ -196,6 +201,9 @@ struct rte_sched_queue_stats {
/* Packets */
uint32_t n_pkts; /**< Packets successfully written */
uint32_t n_pkts_dropped; /**< Packets dropped */
#ifdef RTE_SCHED_RED
uint32_t n_pkts_red_dropped; /**< Packets dropped by RED */
#endif
/* Bytes */
uint32_t n_bytes; /**< Bytes successfully written */