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9ce7bc036a
It is a waste of memory to use a full "struct netns_sysctl_ipv6"
while only one pointer is really used, considering netns_sysctl_ipv6
keeps growing.
Also, since "struct netns_frags" has cache line alignment,
it is better to move the frags_hdr pointer outside, otherwise
we spend a full cache line for this pointer.
This saves 192 bytes of memory per netns.
Fixes: c038a767cd ("ipv6: add a new namespace for nf_conntrack_reasm")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* ipv6 in net namespaces
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*/
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#include <net/inet_frag.h>
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#ifndef __NETNS_IPV6_H__
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#define __NETNS_IPV6_H__
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#include <net/dst_ops.h>
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struct ctl_table_header;
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struct netns_sysctl_ipv6 {
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#ifdef CONFIG_SYSCTL
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struct ctl_table_header *hdr;
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struct ctl_table_header *route_hdr;
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struct ctl_table_header *icmp_hdr;
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struct ctl_table_header *frags_hdr;
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struct ctl_table_header *xfrm6_hdr;
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#endif
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int bindv6only;
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int flush_delay;
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int ip6_rt_max_size;
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int ip6_rt_gc_min_interval;
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int ip6_rt_gc_timeout;
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int ip6_rt_gc_interval;
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int ip6_rt_gc_elasticity;
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int ip6_rt_mtu_expires;
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int ip6_rt_min_advmss;
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int multipath_hash_policy;
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int flowlabel_consistency;
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int auto_flowlabels;
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int icmpv6_time;
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int anycast_src_echo_reply;
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int ip_nonlocal_bind;
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int fwmark_reflect;
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int idgen_retries;
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int idgen_delay;
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int flowlabel_state_ranges;
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int flowlabel_reflect;
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int max_dst_opts_cnt;
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int max_hbh_opts_cnt;
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int max_dst_opts_len;
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int max_hbh_opts_len;
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int seg6_flowlabel;
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};
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struct netns_ipv6 {
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struct netns_sysctl_ipv6 sysctl;
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struct ipv6_devconf *devconf_all;
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struct ipv6_devconf *devconf_dflt;
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struct inet_peer_base *peers;
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struct netns_frags frags;
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#ifdef CONFIG_NETFILTER
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struct xt_table *ip6table_filter;
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struct xt_table *ip6table_mangle;
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struct xt_table *ip6table_raw;
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#ifdef CONFIG_SECURITY
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struct xt_table *ip6table_security;
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#endif
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struct xt_table *ip6table_nat;
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#endif
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struct fib6_info *fib6_null_entry;
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struct rt6_info *ip6_null_entry;
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struct rt6_statistics *rt6_stats;
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struct timer_list ip6_fib_timer;
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struct hlist_head *fib_table_hash;
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struct fib6_table *fib6_main_tbl;
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struct list_head fib6_walkers;
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struct dst_ops ip6_dst_ops;
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rwlock_t fib6_walker_lock;
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spinlock_t fib6_gc_lock;
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unsigned int ip6_rt_gc_expire;
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unsigned long ip6_rt_last_gc;
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#ifdef CONFIG_IPV6_MULTIPLE_TABLES
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unsigned int fib6_rules_require_fldissect;
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bool fib6_has_custom_rules;
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struct rt6_info *ip6_prohibit_entry;
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struct rt6_info *ip6_blk_hole_entry;
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struct fib6_table *fib6_local_tbl;
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struct fib_rules_ops *fib6_rules_ops;
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#endif
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struct sock **icmp_sk;
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struct sock *ndisc_sk;
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struct sock *tcp_sk;
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struct sock *igmp_sk;
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struct sock *mc_autojoin_sk;
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#ifdef CONFIG_IPV6_MROUTE
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#ifndef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES
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struct mr_table *mrt6;
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#else
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struct list_head mr6_tables;
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struct fib_rules_ops *mr6_rules_ops;
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#endif
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#endif
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atomic_t dev_addr_genid;
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atomic_t fib6_sernum;
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struct seg6_pernet_data *seg6_data;
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struct fib_notifier_ops *notifier_ops;
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struct fib_notifier_ops *ip6mr_notifier_ops;
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unsigned int ipmr_seq; /* protected by rtnl_mutex */
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struct {
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struct hlist_head head;
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spinlock_t lock;
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u32 seq;
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} ip6addrlbl_table;
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};
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#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
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struct netns_nf_frag {
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struct netns_frags frags;
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};
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#endif
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#endif
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