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Date:   Mon, 19 Sep 2022 10:31:36 +0200
From:   Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:     David Ahern <dsahern@...nel.org>,
        Stephen Hemminger <stephen@...workplumber.org>
Cc:     netdev@...r.kernel.org, Nicolas Dichtel <nicolas.dichtel@...nd.com>
Subject: [PATCH iproute2-next] link: display 'allmulti' counter

This counter is based on the same principle that the 'promiscuity' counter:
the flag ALLMULTI is displayed only when it is explicitly requested by the
userland. This counter enables to know if 'allmulti' is configured on an
interface.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>
---
 include/uapi/linux/if_link.h | 1 +
 ip/ipaddress.c               | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index e0fbbfeeb3a1..a59b4cd03e93 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -370,6 +370,7 @@ enum {
 	IFLA_GRO_MAX_SIZE,
 	IFLA_TSO_MAX_SIZE,
 	IFLA_TSO_MAX_SEGS,
+	IFLA_ALLMULTI,
 
 	__IFLA_MAX
 };
diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index 45955e1c065e..1f034f7db520 100644
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -1205,6 +1205,12 @@ int print_linkinfo(struct nlmsghdr *n, void *arg)
 				   " promiscuity %u ",
 				   rta_getattr_u32(tb[IFLA_PROMISCUITY]));
 
+		if (tb[IFLA_ALLMULTI])
+			print_uint(PRINT_ANY,
+				   "allmulti",
+				   " allmulti %u ",
+				   rta_getattr_u32(tb[IFLA_ALLMULTI]));
+
 		if (tb[IFLA_MIN_MTU])
 			print_uint(PRINT_ANY,
 				   "min_mtu", "minmtu %u ",
-- 
2.33.0

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