From e82a347d92d14260d1e2cf121a25e0458b1abbf7 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 15 Jan 2026 09:41:34 +0000 Subject: [PATCH] ipv6: add sysctl_ipv6_flowlabel group Group together following struct netns_sysctl_ipv6 fields: - flowlabel_consistency - auto_flowlabels - flowlabel_state_ranges After this patch, ip6_make_flowlabel() uses a single cache line to fetch auto_flowlabels and flowlabel_state_ranges (instead of two before the patch). Signed-off-by: Eric Dumazet Reviewed-by: Simon Horman Link: https://patch.msgid.link/20260115094141.3124990-2-edumazet@google.com Signed-off-by: Jakub Kicinski --- include/net/netns/ipv6.h | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h index 08d2ecc96e2b4..34bdb1308e8ff 100644 --- a/include/net/netns/ipv6.h +++ b/include/net/netns/ipv6.h @@ -30,19 +30,23 @@ struct netns_sysctl_ipv6 { int ip6_rt_min_advmss; u32 multipath_hash_fields; u8 multipath_hash_policy; - u8 bindv6only; + + __cacheline_group_begin(sysctl_ipv6_flowlabel); u8 flowlabel_consistency; u8 auto_flowlabels; - int icmpv6_time; + u8 flowlabel_state_ranges; + __cacheline_group_end(sysctl_ipv6_flowlabel); + u8 icmpv6_echo_ignore_all; u8 icmpv6_echo_ignore_multicast; u8 icmpv6_echo_ignore_anycast; + int icmpv6_time; DECLARE_BITMAP(icmpv6_ratemask, ICMPV6_MSG_MAX + 1); unsigned long *icmpv6_ratemask_ptr; u8 anycast_src_echo_reply; + u8 bindv6only; u8 ip_nonlocal_bind; u8 fwmark_reflect; - u8 flowlabel_state_ranges; int idgen_retries; int idgen_delay; int flowlabel_reflect; -- 2.47.3