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net: reorganize fields in netns_mib

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Order fields to increase locality for most used protocols.

udplite and icmp are moved at the end.

Same for proc_net_devsnmp6 which is not used in fast path.

This potentially saves one cache line miss for typical TCP/UDP over IPv4/IPv6.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2021-04-02 11:07:46 -07:00 committed by David S. Miller
parent ca4d4c34ae
commit 7f040aa322
1 changed files with 22 additions and 12 deletions
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34
include/net/netns/mib.h
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@ -5,22 +5,19 @@
#include <net/snmp.h>
struct netns_mib {
DEFINE_SNMP_STAT(struct tcp_mib, tcp_statistics);
DEFINE_SNMP_STAT(struct ipstats_mib, ip_statistics);
DEFINE_SNMP_STAT(struct linux_mib, net_statistics);
DEFINE_SNMP_STAT(struct udp_mib, udp_statistics);
DEFINE_SNMP_STAT(struct udp_mib, udplite_statistics);
DEFINE_SNMP_STAT(struct icmp_mib, icmp_statistics);
DEFINE_SNMP_STAT_ATOMIC(struct icmpmsg_mib, icmpmsg_statistics);
#if IS_ENABLED(CONFIG_IPV6)
struct proc_dir_entry *proc_net_devsnmp6;
DEFINE_SNMP_STAT(struct udp_mib, udp_stats_in6);
DEFINE_SNMP_STAT(struct udp_mib, udplite_stats_in6);
DEFINE_SNMP_STAT(struct ipstats_mib, ipv6_statistics);
DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics);
DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib, icmpv6msg_statistics);
#endif
DEFINE_SNMP_STAT(struct tcp_mib, tcp_statistics);
DEFINE_SNMP_STAT(struct linux_mib, net_statistics);
DEFINE_SNMP_STAT(struct udp_mib, udp_statistics);
#if IS_ENABLED(CONFIG_IPV6)
DEFINE_SNMP_STAT(struct udp_mib, udp_stats_in6);
#endif
#ifdef CONFIG_XFRM_STATISTICS
DEFINE_SNMP_STAT(struct linux_xfrm_mib, xfrm_statistics);
#endif
@ -30,6 +27,19 @@ struct netns_mib {
#ifdef CONFIG_MPTCP
DEFINE_SNMP_STAT(struct mptcp_mib, mptcp_statistics);
#endif
DEFINE_SNMP_STAT(struct udp_mib, udplite_statistics);
#if IS_ENABLED(CONFIG_IPV6)
DEFINE_SNMP_STAT(struct udp_mib, udplite_stats_in6);
#endif
DEFINE_SNMP_STAT(struct icmp_mib, icmp_statistics);
DEFINE_SNMP_STAT_ATOMIC(struct icmpmsg_mib, icmpmsg_statistics);
#if IS_ENABLED(CONFIG_IPV6)
DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics);
DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib, icmpv6msg_statistics);
struct proc_dir_entry *proc_net_devsnmp6;
#endif
};
#endif