netdev - [PATCH iproute2-next 06/10] dcb: Add -s to enable statistics

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Date:   Fri, 11 Dec 2020 00:02:20 +0100
From:   Petr Machata <me@...chata.org>
To:     netdev@...r.kernel.org, dsahern@...il.com,
        stephen@...workplumber.org
Cc:     Petr Machata <me@...chata.org>
Subject: [PATCH iproute2-next 06/10] dcb: Add -s to enable statistics

Allow selective display of statistical counters by passing -s.

Signed-off-by: Petr Machata <me@...chata.org>
---
 dcb/dcb.c      | 9 +++++++--
 dcb/dcb.h      | 1 +
 man/man8/dcb.8 | 5 +++++
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/dcb/dcb.c b/dcb/dcb.c
index 7c0beee43686..9332a8b2e3d4 100644
--- a/dcb/dcb.c
+++ b/dcb/dcb.c
@@ -310,7 +310,8 @@ static void dcb_help(void)
 		"Usage: dcb [ OPTIONS ] OBJECT { COMMAND | help }\n"
 		"       dcb [ -f | --force ] { -b | --batch } filename [ -N | --Netns ] netnsname\n"
 		"where  OBJECT := ets\n"
-		"       OPTIONS := [ -V | --Version | -j | --json | -p | --pretty | -v | --verbose ]\n");
+		"       OPTIONS := [ -V | --Version | -j | --json | -p | --pretty\n"
+		"                  | -s | --statistics | -v | --verbose ]\n");
 }
 
 static int dcb_cmd(struct dcb *dcb, int argc, char **argv)
@@ -346,6 +347,7 @@ int main(int argc, char **argv)
 		{ "batch",		required_argument,	NULL, 'b' },
 		{ "json",		no_argument,		NULL, 'j' },
 		{ "pretty",		no_argument,		NULL, 'p' },
+		{ "statistics",		no_argument,		NULL, 's' },
 		{ "Netns",		required_argument,	NULL, 'N' },
 		{ "help",		no_argument,		NULL, 'h' },
 		{ NULL, 0, NULL, 0 }
@@ -363,7 +365,7 @@ int main(int argc, char **argv)
 		return EXIT_FAILURE;
 	}
 
-	while ((opt = getopt_long(argc, argv, "b:fhjpvN:V",
+	while ((opt = getopt_long(argc, argv, "b:fhjpsvN:V",
 				  long_options, NULL)) >= 0) {
 
 		switch (opt) {
@@ -383,6 +385,9 @@ int main(int argc, char **argv)
 		case 'p':
 			pretty = true;
 			break;
+		case 's':
+			dcb->stats = true;
+			break;
 		case 'N':
 			if (netns_switch(optarg)) {
 				ret = EXIT_FAILURE;
diff --git a/dcb/dcb.h b/dcb/dcb.h
index d22176888811..b2a13b3065f2 100644
--- a/dcb/dcb.h
+++ b/dcb/dcb.h
@@ -11,6 +11,7 @@ struct dcb {
 	char *buf;
 	struct mnl_socket *nl;
 	bool json_output;
+	bool stats;
 };
 
 int dcb_parse_mapping(const char *what_key, __u32 key, __u32 max_key,
diff --git a/man/man8/dcb.8 b/man/man8/dcb.8
index f318435caa98..f853b7baaf33 100644
--- a/man/man8/dcb.8
+++ b/man/man8/dcb.8
@@ -51,6 +51,11 @@ Generate JSON output.
 .BR "\-p" , " --pretty"
 When combined with -j generate a pretty JSON output.
 
+.TP
+.BR "\-s" , " --statistics"
+If the object in question contains any statistical counters, shown them as
+part of the "show" output.
+
 .SH OBJECTS
 
 .TP
-- 
2.25.1