/* * generic net pointers */ #ifndef __NET_GENERIC_H__ #define __NET_GENERIC_H__ #include #include /* * 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; void *ptr[0]; }; }; 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 private-remove' selected='selected'>nds-private-remove net-next plumbingsTobias Klauser
summaryrefslogtreecommitdiff
path: root/net/ipv4/tcp_output.c
AgeCommit message (Expand)AuthorFilesLines
2017-02-07tcp: replace dst_confirm with sk_dst_confirmJulian Anastasov1-0/+2
2017-02-03tcp: clear pfmemalloc on outgoing skbEric Dumazet1-0/+7
2017-02-03tcp: add tcp_mss_clamp() helperEric Dumazet1-10/+4
2017-02-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-2/+4
2017-02-01tcp: fix 0 divide in __tcp_select_window()Eric Dumazet1-2/+4