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1e2c2a4fe4
The header files could not be build indepdent from each other. This is happened because headers didn't include the files for things they've used. This was problematic because the success of a build depended on the knowledge about the right order of local includes. Also source files were not including everything they've used explicitly. Instead they required that transitive includes are always stable. This is problematic because some transitive includes are not obvious, depend on config settings and may not be stable in the future. The order for include blocks are: * primary headers (main.h and the *.h file of a *.c file) * global linux headers * required local headers * extra forward declarations for pointers in function/struct declarations The only exceptions are linux/bitops.h and linux/if_ether.h in packet.h. This header file is shared with userspace applications like batctl and must therefore build together with userspace applications. The header linux/bitops.h is not part of the uapi headers and linux/if_ether.h conflicts with the musl implementation of netinet/if_ether.h. The maintainers rejected the use of __KERNEL__ preprocessor checks and thus these two headers are only in main.h. All files using packet.h first have to include main.h to work correctly. Reported-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
128 lines
4.3 KiB
C
128 lines
4.3 KiB
C
/* Copyright (C) 2007-2015 B.A.T.M.A.N. contributors:
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*
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* Marek Lindner, Simon Wunderlich
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _NET_BATMAN_ADV_ORIGINATOR_H_
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#define _NET_BATMAN_ADV_ORIGINATOR_H_
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#include "main.h"
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#include <linux/atomic.h>
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#include <linux/compiler.h>
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#include <linux/if_ether.h>
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#include <linux/jhash.h>
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#include <linux/rculist.h>
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#include <linux/rcupdate.h>
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#include <linux/stddef.h>
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#include <linux/types.h>
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#include "hash.h"
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struct seq_file;
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int batadv_compare_orig(const struct hlist_node *node, const void *data2);
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int batadv_originator_init(struct batadv_priv *bat_priv);
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void batadv_originator_free(struct batadv_priv *bat_priv);
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void batadv_purge_orig_ref(struct batadv_priv *bat_priv);
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void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node);
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void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node);
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struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
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const uint8_t *addr);
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struct batadv_neigh_node *
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batadv_neigh_node_get(const struct batadv_orig_node *orig_node,
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const struct batadv_hard_iface *hard_iface,
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const uint8_t *addr);
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struct batadv_neigh_node *
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batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
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const uint8_t *neigh_addr,
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struct batadv_orig_node *orig_node);
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void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node);
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struct batadv_neigh_node *
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batadv_orig_router_get(struct batadv_orig_node *orig_node,
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const struct batadv_hard_iface *if_outgoing);
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struct batadv_neigh_ifinfo *
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batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh,
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struct batadv_hard_iface *if_outgoing);
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struct batadv_neigh_ifinfo *
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batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh,
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struct batadv_hard_iface *if_outgoing);
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void batadv_neigh_ifinfo_free_ref(struct batadv_neigh_ifinfo *neigh_ifinfo);
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struct batadv_orig_ifinfo *
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batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node,
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struct batadv_hard_iface *if_outgoing);
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struct batadv_orig_ifinfo *
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batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node,
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struct batadv_hard_iface *if_outgoing);
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void batadv_orig_ifinfo_free_ref(struct batadv_orig_ifinfo *orig_ifinfo);
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int batadv_orig_seq_print_text(struct seq_file *seq, void *offset);
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int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset);
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int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface,
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int max_if_num);
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int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface,
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int max_if_num);
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struct batadv_orig_node_vlan *
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batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node,
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unsigned short vid);
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struct batadv_orig_node_vlan *
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batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node,
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unsigned short vid);
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void batadv_orig_node_vlan_free_ref(struct batadv_orig_node_vlan *orig_vlan);
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/* hashfunction to choose an entry in a hash table of given size
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* hash algorithm from http://en.wikipedia.org/wiki/Hash_table
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*/
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static inline uint32_t batadv_choose_orig(const void *data, uint32_t size)
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{
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uint32_t hash = 0;
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hash = jhash(data, ETH_ALEN, hash);
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return hash % size;
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}
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static inline struct batadv_orig_node *
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batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data)
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{
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struct batadv_hashtable *hash = bat_priv->orig_hash;
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struct hlist_head *head;
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struct batadv_orig_node *orig_node, *orig_node_tmp = NULL;
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int index;
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if (!hash)
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return NULL;
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index = batadv_choose_orig(data, hash->size);
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head = &hash->table[index];
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rcu_read_lock();
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hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
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if (!batadv_compare_eth(orig_node, data))
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continue;
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if (!atomic_inc_not_zero(&orig_node->refcount))
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continue;
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orig_node_tmp = orig_node;
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break;
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}
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rcu_read_unlock();
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return orig_node_tmp;
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}
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#endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */
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