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generic.h

/* SPDX-License-Identifier: GPL-2.0 */ /* * generic net pointers */ #ifndef __NET_GENERIC_H__ #define __NET_GENERIC_H__ #include <linux/bug.h> #include <linux/rcupdate.h> #include <net/net_namespace.h> /* * Generic net pointers are to be used by modules to put some private * stuff on the struct net without explicit struct net modification * * The rules are simple: * 1. set pernet_operations->id. After register_pernet_device you * will have the id of your private pointer. * 2. set pernet_operations->size to have the code allocate and free * a private structure pointed to from struct net. * 3. do not change this pointer while the net is alive; * 4. do not try to have any private reference on the net_generic object. * * After accomplishing all of the above, the private pointer can be * accessed with the net_generic() call. */ struct net_generic { union { struct { unsigned int len; struct rcu_head rcu; } s; DECLARE_FLEX_ARRAY(void *, ptr); }; }; static inline void *net_generic(const struct net *net, unsigned int id) { struct net_generic *ng; void *ptr; rcu_read_lock(); ng = rcu_dereference(net->gen); ptr = ng->ptr[id]; rcu_read_unlock(); return ptr; } #endif

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docroot: /var/www/469ed2f6-4d4b-4a8a-9f5e-ee4ef04d3bc8/public_html

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curdir: /usr/src/linux-headers-6.8.0-117/include/net/netns

	.		4096
	..		12288
X	bpf.h		631
X	can.h		1071
X	conntrack.h		2262
X	core.h		505
X	flow_table.h		287
X	generic.h		1225
X	hash.h		212
X	ieee802154_6lowpan.h		395
X	ipv4.h		6868
X	ipv6.h		3334
X	mctp.h		834
X	mib.h		1268
X	mpls.h		397
X	netfilter.h		998
X	nexthop.h		456
X	nftables.h		171
X	packet.h		295
X	sctp.h		4802
X	smc.h		714
X	unix.h		392
X	xdp.h		237
X	xfrm.h		2170