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Date: Tue, 10 Jul 2018 14:05:37 -0700
From: Stephen Hemminger <stephen@...workplumber.org>
To: netdev@...r.kernel.org
Cc: Stephen Hemminger <sthemmin@...rosoft.com>,
Stephen Hemminger <stephen@...workplumber.org>
Subject: [PATCH v2 iproute2-next 10/31] tc/mqprio: implement JSON output
From: Stephen Hemminger <sthemmin@...rosoft.com>
Output queue options in JSON if requested.
Signed-off-by: Stephen Hemminger <stephen@...workplumber.org>
---
tc/q_mqprio.c | 134 +++++++++++++++++++++++++++-----------------------
1 file changed, 72 insertions(+), 62 deletions(-)
diff --git a/tc/q_mqprio.c b/tc/q_mqprio.c
index 207d6441d8fa..3d78f9cec996 100644
--- a/tc/q_mqprio.c
+++ b/tc/q_mqprio.c
@@ -213,15 +213,37 @@ static int mqprio_parse_opt(struct qdisc_util *qu, int argc,
return 0;
}
+static void print_rate_table(const struct tc_mqprio_qopt *qopt,
+ const struct rtattr *tbl,
+ const char *key, unsigned short type)
+{
+ __u64 rate64[TC_QOPT_MAX_QUEUE] = { 0 };
+ unsigned int rem = RTA_PAYLOAD(tbl);
+ const struct rtattr *r;
+ int i = 0;
+
+ for (r = RTA_DATA(tbl); RTA_OK(r, rem); r = RTA_NEXT(r, rem)) {
+ if (r->rta_type != type) {
+ fprintf(stderr, "invalid rate table response\n");
+ return;
+ }
+ if (i == TC_QOPT_MAX_QUEUE)
+ break;
+ rate64[i++] = rta_getattr_u64(r);
+ }
+
+ print_string(PRINT_FP, NULL, " %s:", key);
+ open_json_array(PRINT_JSON, key);
+ for (i = 0; i < qopt->num_tc; i++)
+ print_rate(NULL, "%s ", rate64[i]);
+ close_json_array(PRINT_JSON, "");
+}
+
static int mqprio_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
{
- int i;
struct tc_mqprio_qopt *qopt;
- __u64 min_rate64[TC_QOPT_MAX_QUEUE] = {0};
- __u64 max_rate64[TC_QOPT_MAX_QUEUE] = {0};
- int len;
-
- SPRINT_BUF(b1);
+ struct rtattr *tb[TCA_MQPRIO_MAX + 1];
+ int i, len;
if (opt == NULL)
return 0;
@@ -234,71 +256,59 @@ static int mqprio_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
qopt = RTA_DATA(opt);
- fprintf(f, " tc %u map ", qopt->num_tc);
- for (i = 0; i <= TC_PRIO_MAX; i++)
- fprintf(f, "%u ", qopt->prio_tc_map[i]);
- fprintf(f, "\n queues:");
- for (i = 0; i < qopt->num_tc; i++)
- fprintf(f, "(%u:%u) ", qopt->offset[i],
- qopt->offset[i] + qopt->count[i] - 1);
+ print_uint(PRINT_ANY, "num_tc",
+ " tc %u map ", qopt->num_tc);
- if (len > 0) {
- struct rtattr *tb[TCA_MQPRIO_MAX + 1];
-
- parse_rtattr(tb, TCA_MQPRIO_MAX,
- RTA_DATA(opt) + RTA_ALIGN(sizeof(*qopt)),
- len);
+ open_json_array(PRINT_JSON, "priomap");
+ for (i = 0; i <= TC_PRIO_MAX; i++)
+ print_uint(PRINT_ANY, NULL, "%u ", qopt->prio_tc_map[i]);
+ close_json_array(PRINT_JSON, "");
+
+ print_string(PRINT_FP, NULL, "%s queues:", _SL_);
+ open_json_array(PRINT_JSON, "queues");
+ for (i = 0; i < qopt->num_tc; i++) {
+ open_json_object(NULL);
+ print_uint(PRINT_ANY, "offset", "(%u", qopt->offset[i]);
+ print_uint(PRINT_ANY, "length", ":%u) ",
+ qopt->offset[i] + qopt->count[i] - 1);
+ close_json_object();
+ }
+ close_json_array(PRINT_JSON, NULL);
- if (tb[TCA_MQPRIO_MODE]) {
- __u16 *mode = RTA_DATA(tb[TCA_MQPRIO_MODE]);
+ if (len == 0)
+ return 0;
- if (*mode == TC_MQPRIO_MODE_CHANNEL)
- fprintf(f, "\n mode:channel");
- } else {
- fprintf(f, "\n mode:dcb");
- }
+ parse_rtattr(tb, TCA_MQPRIO_MAX,
+ RTA_DATA(opt) + RTA_ALIGN(sizeof(*qopt)),
+ len);
- if (tb[TCA_MQPRIO_SHAPER]) {
- __u16 *shaper = RTA_DATA(tb[TCA_MQPRIO_SHAPER]);
+ if (tb[TCA_MQPRIO_MODE]) {
+ __u16 mode = rta_getattr_u16(tb[TCA_MQPRIO_MODE]);
- if (*shaper == TC_MQPRIO_SHAPER_BW_RATE)
- fprintf(f, "\n shaper:bw_rlimit");
- } else {
- fprintf(f, "\n shaper:dcb");
- }
+ print_string(PRINT_FP, NULL, "%s ", _SL_);
+ print_string(PRINT_ANY, "mode", "mode:%s",
+ mode == TC_MQPRIO_MODE_CHANNEL ? "channel" :
+ mode == TC_MQPRIO_MODE_DCB ? "dcb" :
+ "unknown");
+ }
- if (tb[TCA_MQPRIO_MIN_RATE64]) {
- struct rtattr *r;
- int rem = RTA_PAYLOAD(tb[TCA_MQPRIO_MIN_RATE64]);
- __u64 *min = min_rate64;
+ if (tb[TCA_MQPRIO_SHAPER]) {
+ __u16 shaper = rta_getattr_u16(tb[TCA_MQPRIO_SHAPER]);
- for (r = RTA_DATA(tb[TCA_MQPRIO_MIN_RATE64]);
- RTA_OK(r, rem); r = RTA_NEXT(r, rem)) {
- if (r->rta_type != TCA_MQPRIO_MIN_RATE64)
- return -1;
- *(min++) = rta_getattr_u64(r);
- }
- fprintf(f, " min_rate:");
- for (i = 0; i < qopt->num_tc; i++)
- fprintf(f, "%s ", sprint_rate(min_rate64[i], b1));
- }
+ print_string(PRINT_FP, NULL, "%s ", _SL_);
+ print_string(PRINT_ANY, "shaper", "shaper:%s",
+ shaper == TC_MQPRIO_SHAPER_BW_RATE ? "bw_rlimit" :
+ shaper == TC_MQPRIO_SHAPER_DCB ? "dcb" :
+ "unknown");
+ }
- if (tb[TCA_MQPRIO_MAX_RATE64]) {
- struct rtattr *r;
- int rem = RTA_PAYLOAD(tb[TCA_MQPRIO_MAX_RATE64]);
- __u64 *max = max_rate64;
+ if (tb[TCA_MQPRIO_MIN_RATE64])
+ print_rate_table(qopt, tb[TCA_MQPRIO_MIN_RATE64],
+ "min_rate", TCA_MQPRIO_MIN_RATE64);
- for (r = RTA_DATA(tb[TCA_MQPRIO_MAX_RATE64]);
- RTA_OK(r, rem); r = RTA_NEXT(r, rem)) {
- if (r->rta_type != TCA_MQPRIO_MAX_RATE64)
- return -1;
- *(max++) = rta_getattr_u64(r);
- }
- fprintf(f, " max_rate:");
- for (i = 0; i < qopt->num_tc; i++)
- fprintf(f, "%s ", sprint_rate(max_rate64[i], b1));
- }
- }
+ if (tb[TCA_MQPRIO_MAX_RATE64])
+ print_rate_table(qopt, tb[TCA_MQPRIO_MAX_RATE64],
+ "max_rate", TCA_MQPRIO_MAX_RATE64);
return 0;
}
--
2.18.0
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