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fq_codel: add per queue memory limit

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This patch adds support for TCA_FQ_CODEL_MEMORY_LIMIT attribute.

..
qdisc fq_codel 8008: root refcnt 257 limit 10240p flows 1024
 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
 Sent 2083566791363 bytes 1376214889 pkt (dropped 4994406, overlimits 0
requeues 21705223)
 rate 9841Mbit 812549pps backlog 3906120b 376p requeues 21705223
  maxpacket 68130 drop_overlimit 4994406 new_flow_count 28855414
  ecn_mark 0 memory_used 4190048 drop_overmemory 4994406
new_flows_len 1 old_flows_len 177

Signed-off-by: Eric Dumazet <edumazet@google.com>
This commit is contained in:
Eric Dumazet 2016-06-08 08:42:00 -07:00 committed by Stephen Hemminger
parent 06f9a59170
commit 4de4b5ca14
1 changed files with 22 additions and 0 deletions
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22
tc/q_fq_codel.c
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@ -65,6 +65,7 @@ static int fq_codel_parse_opt(struct qdisc_util *qu, int argc, char **argv,
unsigned int interval = 0;
unsigned int quantum = 0;
unsigned int ce_threshold = ~0U;
unsigned int memory = ~0U;
int ecn = -1;
struct rtattr *tail;
@ -99,6 +100,12 @@ static int fq_codel_parse_opt(struct qdisc_util *qu, int argc, char **argv,
fprintf(stderr, "Illegal \"ce_threshold\"\n");
return -1;
}
} else if (strcmp(*argv, "memory_limit") == 0) {
NEXT_ARG();
if (get_size(&memory, *argv)) {
fprintf(stderr, "Illegal \"memory_limit\"\n");
return -1;
}
} else if (strcmp(*argv, "interval") == 0) {
NEXT_ARG();
if (get_time(&interval, *argv)) {
@ -137,6 +144,10 @@ static int fq_codel_parse_opt(struct qdisc_util *qu, int argc, char **argv,
if (ce_threshold != ~0U)
addattr_l(n, 1024, TCA_FQ_CODEL_CE_THRESHOLD,
&ce_threshold, sizeof(ce_threshold));
if (memory != ~0U)
addattr_l(n, 1024, TCA_FQ_CODEL_MEMORY_LIMIT,
&memory, sizeof(memory));
tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
return 0;
}
@ -151,6 +162,7 @@ static int fq_codel_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt
unsigned int ecn;
unsigned int quantum;
unsigned int ce_threshold;
unsigned int memory_limit;
SPRINT_BUF(b1);
@ -189,6 +201,12 @@ static int fq_codel_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt
interval = rta_getattr_u32(tb[TCA_FQ_CODEL_INTERVAL]);
fprintf(f, "interval %s ", sprint_time(interval, b1));
}
if (tb[TCA_FQ_CODEL_MEMORY_LIMIT] &&
RTA_PAYLOAD(tb[TCA_FQ_CODEL_MEMORY_LIMIT]) >= sizeof(__u32)) {
memory_limit = rta_getattr_u32(tb[TCA_FQ_CODEL_MEMORY_LIMIT]);
fprintf(f, "memory_limit %s ", sprint_size(memory_limit, b1));
}
if (tb[TCA_FQ_CODEL_ECN] &&
RTA_PAYLOAD(tb[TCA_FQ_CODEL_ECN]) >= sizeof(__u32)) {
ecn = rta_getattr_u32(tb[TCA_FQ_CODEL_ECN]);
@ -223,6 +241,10 @@ static int fq_codel_print_xstats(struct qdisc_util *qu, FILE *f,
st->qdisc_stats.ecn_mark);
if (st->qdisc_stats.ce_mark)
fprintf(f, " ce_mark %u", st->qdisc_stats.ce_mark);
if (st->qdisc_stats.memory_usage)
fprintf(f, " memory_used %u", st->qdisc_stats.memory_usage);
if (st->qdisc_stats.drop_overmemory)
fprintf(f, " drop_overmemory %u", st->qdisc_stats.drop_overmemory);
fprintf(f, "\n new_flows_len %u old_flows_len %u",
st->qdisc_stats.new_flows_len,
st->qdisc_stats.old_flows_len);