diff mbox series

[iproute2,v2] tc/mqprio: json-ify output

Message ID 20201128122148.6904-1-bluca@debian.org
State Superseded
Headers show
Series [iproute2,v2] tc/mqprio: json-ify output | expand

Commit Message

Luca Boccassi Nov. 28, 2020, 12:21 p.m. UTC
As reported by a Debian user, mqprio output in json mode is
invalid:

{
     "kind": "mqprio",
     "handle": "8021:",
     "dev": "enp1s0f0",
     "root": true,
     "options": { tc 2 map 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0
          queues:(0:3) (4:7)
          mode:channel
          shaper:dcb}
}

json-ify it, while trying to maintain the same formatting
for standard output.

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=972784

Reported-by: Roméo GINON <romeo.ginon@ilexia.com>
Signed-off-by: Luca Boccassi <bluca@debian.org>
---
v1: I do not have hardware where I can configure mqprio, so I can't really
test this apart from compiling it. Stephen and David, do you have machines
where you can quickly check that this works as expected? Thanks!

v2: the original reporter tested the patch and reported this is the new output:

{
    "kind": "mqprio",
    "handle": "8001:",
    "root": true,
    "options": {
        "tc": 2,
        "map": [ 0,0,0,1,0,1,0,0,0,0,0,0,0,0,0,0 ],
        "queues": [
            "": [ 0,3 ],
            "": [ 4,7 ] ],
        "mode": "channel",
        "shaper": "dcb"
    }
}

Changed in v2 to make the inner queues arrays anonymous
("" -> NULL for open/close_json_array)

Still would appreciate testing from someone else who has hardware
that supports this feature and can enable this, as I am flying blind.

 tc/q_mqprio.c | 34 ++++++++++++++++++++--------------
 1 file changed, 20 insertions(+), 14 deletions(-)

Comments

Luca Boccassi Nov. 28, 2020, 3:24 p.m. UTC | #1
On Sat, 2020-11-28 at 12:21 +0000, Luca Boccassi wrote:
> As reported by a Debian user, mqprio output in json mode is
> invalid:
> 
> {
>      "kind": "mqprio",
>      "handle": "8021:",
>      "dev": "enp1s0f0",
>      "root": true,
>      "options": { tc 2 map 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0
>           queues:(0:3) (4:7)
>           mode:channel
>           shaper:dcb}
> }
> 
> json-ify it, while trying to maintain the same formatting
> for standard output.
> 
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=972784
> 
> Reported-by: Roméo GINON <romeo.ginon@ilexia.com>
> Signed-off-by: Luca Boccassi <bluca@debian.org>
> ---
> v1: I do not have hardware where I can configure mqprio, so I can't
> really
> test this apart from compiling it. Stephen and David, do you have
> machines
> where you can quickly check that this works as expected? Thanks!
> 
> v2: the original reporter tested the patch and reported this is the
> new output:
> 
> {
>     "kind": "mqprio",
>     "handle": "8001:",
>     "root": true,
>     "options": {
>         "tc": 2,
>         "map": [ 0,0,0,1,0,1,0,0,0,0,0,0,0,0,0,0 ],
>         "queues": [
>             "": [ 0,3 ],
>             "": [ 4,7 ] ],
>         "mode": "channel",
>         "shaper": "dcb"
>     }
> }
> 
> Changed in v2 to make the inner queues arrays anonymous
> ("" -> NULL for open/close_json_array)
> 
> Still would appreciate testing from someone else who has hardware
> that supports this feature and can enable this, as I am flying blind.

The reporter confirmed the json output is now valid with this patch on
the debian bug report.
diff mbox series

Patch

diff --git a/tc/q_mqprio.c b/tc/q_mqprio.c
index f26ba8d7..a128fc11 100644
--- a/tc/q_mqprio.c
+++ b/tc/q_mqprio.c
@@ -243,13 +243,19 @@  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);
+	print_uint(PRINT_ANY, "tc", "tc %u ", qopt->num_tc);
+	open_json_array(PRINT_ANY, is_json_context() ? "map" : "map ");
 	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, NULL, "%u ", qopt->prio_tc_map[i]);
+	close_json_array(PRINT_ANY, "");
+	open_json_array(PRINT_ANY, is_json_context() ? "queues" : "\n             queues:");
+	for (i = 0; i < qopt->num_tc; i++) {
+		open_json_array(PRINT_JSON, NULL);
+		print_uint(PRINT_ANY, NULL, "(%u:", qopt->offset[i]);
+		print_uint(PRINT_ANY, NULL, "%u) ", qopt->offset[i] + qopt->count[i] - 1);
+		close_json_array(PRINT_JSON, NULL);
+	}
+	close_json_array(PRINT_ANY, "");
 
 	if (len > 0) {
 		struct rtattr *tb[TCA_MQPRIO_MAX + 1];
@@ -262,18 +268,18 @@  static int mqprio_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
 			__u16 *mode = RTA_DATA(tb[TCA_MQPRIO_MODE]);
 
 			if (*mode == TC_MQPRIO_MODE_CHANNEL)
-				fprintf(f, "\n             mode:channel");
+				print_string(PRINT_ANY, "mode", "\n             mode:%s", "channel");
 		} else {
-			fprintf(f, "\n             mode:dcb");
+			print_string(PRINT_ANY, "mode", "\n             mode:%s", "dcb");
 		}
 
 		if (tb[TCA_MQPRIO_SHAPER]) {
 			__u16 *shaper = RTA_DATA(tb[TCA_MQPRIO_SHAPER]);
 
 			if (*shaper == TC_MQPRIO_SHAPER_BW_RATE)
-				fprintf(f, "\n             shaper:bw_rlimit");
+				print_string(PRINT_ANY, "shaper", "\n             shaper:%s", "bw_rlimit");
 		} else {
-			fprintf(f, "\n             shaper:dcb");
+			print_string(PRINT_ANY, "shaper", "\n             shaper:%s", "dcb");
 		}
 
 		if (tb[TCA_MQPRIO_MIN_RATE64]) {
@@ -287,9 +293,9 @@  static int mqprio_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
 					return -1;
 				*(min++) = rta_getattr_u64(r);
 			}
-			fprintf(f, "	min_rate:");
+			open_json_array(PRINT_ANY, is_json_context() ? "min_rate" : "	min_rate:");
 			for (i = 0; i < qopt->num_tc; i++)
-				fprintf(f, "%s ", sprint_rate(min_rate64[i], b1));
+				print_string(PRINT_ANY, NULL, "%s ", sprint_rate(min_rate64[i], b1));
 		}
 
 		if (tb[TCA_MQPRIO_MAX_RATE64]) {
@@ -303,9 +309,9 @@  static int mqprio_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
 					return -1;
 				*(max++) = rta_getattr_u64(r);
 			}
-			fprintf(f, "	max_rate:");
+			open_json_array(PRINT_ANY, is_json_context() ? "max_rate" : "	max_rate:");
 			for (i = 0; i < qopt->num_tc; i++)
-				fprintf(f, "%s ", sprint_rate(max_rate64[i], b1));
+				print_string(PRINT_ANY, NULL, "%s ", sprint_rate(max_rate64[i], b1));
 		}
 	}
 	return 0;