From: Eric Dumazet <edumazet@google.com>
To: David Ahern <dsahern@kernel.org>,
Stephen Hemminger <stephen@networkplumber.org>
Cc: "David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>,
netdev@vger.kernel.org, eric.dumazet@gmail.com,
Eric Dumazet <edumazet@google.com>
Subject: [PATCH iproute2-next] ll_map: add RTEXT_FILTER_SKIP_STATS to ll_init_map()
Date: Tue, 28 Apr 2026 07:56:47 +0000 [thread overview]
Message-ID: <20260428075647.3206962-1-edumazet@google.com> (raw)
ll_init_map() only cares about names and ifindex.
We can save ~300 bytes per device if we ask the kernel to skip stats,
not counting many cpu cycles if per-cpu stats are involved.
Signed-off-by: Eric Dumazet <edumazet@google.com>
---
lib/ll_map.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/lib/ll_map.c b/lib/ll_map.c
index 8970c20f3cddedcdd1a6f522858fa350d2df8e5b..07937e27d4f6fb5506a3da6e9318270635224364 100644
--- a/lib/ll_map.c
+++ b/lib/ll_map.c
@@ -391,7 +391,9 @@ void ll_init_map(struct rtnl_handle *rth)
if (initialized)
return;
- if (rtnl_linkdump_req(rth, AF_UNSPEC) < 0) {
+ if (rtnl_linkdump_req_filter(rth, AF_UNSPEC,
+ RTEXT_FILTER_VF |
+ RTEXT_FILTER_SKIP_STATS) < 0) {
perror("Cannot send dump request");
exit(1);
}
--
2.54.0.545.g6539524ca2-goog
reply other threads:[~2026-04-28 7:56 UTC|newest]
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