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Date: Fri, 8 Apr 2022 11:54:47 +0100
From: Max Tottenham <mtottenh@...mai.com>
To: <netdev@...r.kernel.org>
CC: <johunt@...mai.com>
Subject: [PATCH iproute2-next] tc: Add JSON output to tc-class
* Add JSON formatted output to the `tc class show ...` command.
* Add JSON formatted output for the htb qdisc classes.
Signed-off-by: Max Tottenham <mtottenh@...mai.com>
---
tc/q_htb.c | 43 +++++++++++++++++++++++++++----------------
tc/tc_class.c | 29 ++++++++++++++++++-----------
2 files changed, 45 insertions(+), 27 deletions(-)
diff --git a/tc/q_htb.c b/tc/q_htb.c
index b5f95f67..c4e36f27 100644
--- a/tc/q_htb.c
+++ b/tc/q_htb.c
@@ -307,27 +307,36 @@ static int htb_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
RTA_PAYLOAD(tb[TCA_HTB_CEIL64]) >= sizeof(ceil64))
ceil64 = rta_getattr_u64(tb[TCA_HTB_CEIL64]);
- tc_print_rate(PRINT_FP, NULL, "rate %s ", rate64);
+ tc_print_rate(PRINT_ANY, "rate", "rate %s ", rate64);
if (hopt->rate.overhead)
- fprintf(f, "overhead %u ", hopt->rate.overhead);
+ print_int(PRINT_ANY, "overhead", "overhead %u ", hopt->rate.overhead);
buffer = tc_calc_xmitsize(rate64, hopt->buffer);
- tc_print_rate(PRINT_FP, NULL, "ceil %s ", ceil64);
+ tc_print_rate(PRINT_ANY, "ceil", "ceil %s ", ceil64);
cbuffer = tc_calc_xmitsize(ceil64, hopt->cbuffer);
linklayer = (hopt->rate.linklayer & TC_LINKLAYER_MASK);
if (linklayer > TC_LINKLAYER_ETHERNET || show_details)
- fprintf(f, "linklayer %s ", sprint_linklayer(linklayer, b3));
+ print_string(PRINT_ANY, "linklayer", "linklayer %s ", sprint_linklayer(linklayer, b3));
if (show_details) {
- print_size(PRINT_FP, NULL, "burst %s/", buffer);
- fprintf(f, "%u ", 1<<hopt->rate.cell_log);
- print_size(PRINT_FP, NULL, "mpu %s ", hopt->rate.mpu);
- print_size(PRINT_FP, NULL, "cburst %s/", cbuffer);
- fprintf(f, "%u ", 1<<hopt->ceil.cell_log);
- print_size(PRINT_FP, NULL, "mpu %s ", hopt->ceil.mpu);
- fprintf(f, "level %d ", (int)hopt->level);
+ open_json_object("details");
+ char burst_buff[64] = {0};
+ char rate_string[64] = {0};
+ sprint_size(buffer, burst_buff);
+ snprintf(rate_string, 64, "%s/%u", burst_buff, 1<<hopt->rate.cell_log);
+
+ print_string(PRINT_ANY, "burst", "burst %s ", rate_string);
+ print_size(PRINT_ANY, "mpu_rate", "mpu %s ", hopt->rate.mpu);
+
+ sprint_size(cbuffer, burst_buff);
+ snprintf(rate_string, 64, "%s/%u", burst_buff, 1<<hopt->ceil.cell_log);
+ print_string(PRINT_ANY, "cburst", "cburst %s ", rate_string);
+
+ print_size(PRINT_ANY, "mpu_ceil", "mpu %s ", hopt->ceil.mpu);
+ print_int(PRINT_ANY, "level", "level %d ", (int)hopt->level);
+ close_json_object();
} else {
- print_size(PRINT_FP, NULL, "burst %s ", buffer);
- print_size(PRINT_FP, NULL, "cburst %s ", cbuffer);
+ print_size(PRINT_ANY, "burst", "burst %s ", buffer);
+ print_size(PRINT_ANY, "cburst", "cburst %s", cbuffer);
}
if (show_raw)
fprintf(f, "buffer [%08x] cbuffer [%08x] ",
@@ -369,9 +378,11 @@ static int htb_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstat
return -1;
st = RTA_DATA(xstats);
- fprintf(f, " lended: %u borrowed: %u giants: %u\n",
- st->lends, st->borrows, st->giants);
- fprintf(f, " tokens: %d ctokens: %d\n", st->tokens, st->ctokens);
+ print_uint(PRINT_ANY, "lended", " lended: %u ", st->lends);
+ print_uint(PRINT_ANY, "borrowed", "borrowed: %u ", st->borrows);
+ print_uint(PRINT_ANY, "giants", "giants: %u\n", st->giants);
+ print_int(PRINT_ANY, "tokens", " tokens: %d ", st->tokens);
+ print_int(PRINT_ANY, "ctokens", "ctokens: %d\n", st->ctokens);
return 0;
}
diff --git a/tc/tc_class.c b/tc/tc_class.c
index 39bea971..10124198 100644
--- a/tc/tc_class.c
+++ b/tc/tc_class.c
@@ -316,6 +316,8 @@ int print_class(struct nlmsghdr *n, void *arg)
return -1;
}
+ open_json_object(NULL);
+
if (show_graph) {
graph_node_add(t->tcm_parent, t->tcm_handle, TCA_RTA(t), len);
return 0;
@@ -335,7 +337,7 @@ int print_class(struct nlmsghdr *n, void *arg)
}
if (n->nlmsg_type == RTM_DELTCLASS)
- fprintf(fp, "deleted ");
+ print_bool(PRINT_ANY, "deleted", "deleted ", true);
abuf[0] = 0;
if (t->tcm_handle) {
@@ -344,22 +346,24 @@ int print_class(struct nlmsghdr *n, void *arg)
else
print_tc_classid(abuf, sizeof(abuf), t->tcm_handle);
}
- fprintf(fp, "class %s %s ", rta_getattr_str(tb[TCA_KIND]), abuf);
+ print_string(PRINT_ANY, "class", "class %s ", rta_getattr_str(tb[TCA_KIND]));
+ print_string(PRINT_ANY, "handle", "%s ", abuf);
if (filter_ifindex == 0)
- fprintf(fp, "dev %s ", ll_index_to_name(t->tcm_ifindex));
+ print_string(PRINT_ANY, "dev", "dev %s ", ll_index_to_name(t->tcm_ifindex));
if (t->tcm_parent == TC_H_ROOT)
- fprintf(fp, "root ");
+ print_bool(PRINT_ANY, "root", "root ", true);
else {
if (filter_qdisc)
print_tc_classid(abuf, sizeof(abuf), TC_H_MIN(t->tcm_parent));
else
print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
- fprintf(fp, "parent %s ", abuf);
+ print_string(PRINT_ANY, "parent", "parent %s ", abuf);
}
if (t->tcm_info)
- fprintf(fp, "leaf %x: ", t->tcm_info>>16);
+ print_0xhex(PRINT_ANY, "leaf", "leaf %x", t->tcm_info>>16);
+
q = get_qdisc_kind(RTA_DATA(tb[TCA_KIND]));
if (tb[TCA_OPTIONS]) {
if (q && q->print_copt)
@@ -367,19 +371,21 @@ int print_class(struct nlmsghdr *n, void *arg)
else
fprintf(fp, "[cannot parse class parameters]");
}
- fprintf(fp, "\n");
+ print_string(PRINT_FP, NULL, "\n", NULL);
if (show_stats) {
struct rtattr *xstats = NULL;
-
+ open_json_object("stats");
if (tb[TCA_STATS] || tb[TCA_STATS2]) {
print_tcstats_attr(fp, tb, " ", &xstats);
- fprintf(fp, "\n");
+ print_string(PRINT_FP, NULL, "\n", NULL);
}
if (q && (xstats || tb[TCA_XSTATS]) && q->print_xstats) {
q->print_xstats(q, fp, xstats ? : tb[TCA_XSTATS]);
- fprintf(fp, "\n");
+ print_string(PRINT_FP, NULL, "\n", NULL);
}
+ close_json_object();
}
+ close_json_object();
fflush(fp);
return 0;
}
@@ -450,11 +456,12 @@ static int tc_class_list(int argc, char **argv)
perror("Cannot send dump request");
return 1;
}
-
+ new_json_obj(json);
if (rtnl_dump_filter(&rth, print_class, stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
return 1;
}
+ delete_json_obj();
if (show_graph)
graph_cls_show(stdout, &buf[0], &root_cls_list, 0);
--
2.17.1
--
Max Tottenham | Senior Software Engineer
/(* Akamai Technologies
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