| /* |
| ************************************************************************** |
| * Copyright (c) 2014-2018, 2020, The Linux Foundation. All rights reserved. |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all copies. |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| ************************************************************************** |
| */ |
| |
| /* |
| * Magic number |
| */ |
| #define ECM_DB_HOST_INSTANCE_MAGIC 0x2873 |
| |
| typedef uint32_t ecm_db_host_hash_t; |
| |
| /* |
| * Host flags |
| */ |
| #define ECM_DB_HOST_FLAGS_INSERTED 1 /* Host is inserted into connection database tables */ |
| |
| /* |
| * struct ecm_db_host_instance |
| */ |
| struct ecm_db_host_instance { |
| struct ecm_db_host_instance *next; /* Next instance in global list */ |
| struct ecm_db_host_instance *prev; /* Previous instance in global list */ |
| struct ecm_db_host_instance *hash_next; /* Next host in the chain of hosts */ |
| struct ecm_db_host_instance *hash_prev; /* previous host in the chain of hosts */ |
| ip_addr_t address; /* RO: IPv4/v6 Address of this host */ |
| bool on_link; /* RO: false when this host is reached via a gateway */ |
| uint32_t time_added; /* RO: DB time stamp when the host was added into the database */ |
| |
| #ifdef ECM_DB_XREF_ENABLE |
| /* |
| * Normally the mapping refers to the host it requires. |
| * However the host also keeps a list of all mappings that are associated with it. |
| */ |
| struct ecm_db_mapping_instance *mappings; /* Mappings made on this host */ |
| int mapping_count; /* Number of mappings in the mapping list */ |
| #endif |
| |
| #ifdef ECM_DB_ADVANCED_STATS_ENABLE |
| uint64_t from_data_total; /* Total of data sent by this host */ |
| uint64_t to_data_total; /* Total of data sent to this host */ |
| uint64_t from_packet_total; /* Total of packets sent by this host */ |
| uint64_t to_packet_total; /* Total of packets sent to this host */ |
| uint64_t from_data_total_dropped; |
| uint64_t to_data_total_dropped; |
| uint64_t from_packet_total_dropped; |
| uint64_t to_packet_total_dropped; |
| #endif |
| |
| ecm_db_host_final_callback_t final; /* Callback to owner when object is destroyed */ |
| void *arg; /* Argument returned to owner in callbacks */ |
| uint32_t flags; |
| int refs; /* Integer to trap we never go negative */ |
| ecm_db_host_hash_t hash_index; |
| #if (DEBUG_LEVEL > 0) |
| uint16_t magic; |
| #endif |
| }; |
| |
| int _ecm_db_host_count_get(void); |
| |
| void _ecm_db_host_ref(struct ecm_db_host_instance *hi); |
| void ecm_db_host_ref(struct ecm_db_host_instance *hi); |
| int ecm_db_host_deref(struct ecm_db_host_instance *hi); |
| |
| void ecm_db_host_address_get(struct ecm_db_host_instance *hi, ip_addr_t addr); |
| bool ecm_db_host_on_link_get(struct ecm_db_host_instance *hi); |
| |
| struct ecm_db_host_instance *ecm_db_host_find_and_ref(ip_addr_t address); |
| struct ecm_db_host_instance *ecm_db_hosts_get_and_ref_first(void); |
| struct ecm_db_host_instance *ecm_db_host_get_and_ref_next(struct ecm_db_host_instance *hi); |
| |
| #ifdef ECM_DB_XREF_ENABLE |
| int ecm_db_host_mapping_count_get(struct ecm_db_host_instance *hi); |
| void ecm_db_host_connections_defunct_by_dir(ip_addr_t addr, ecm_db_obj_dir_t dir); |
| void ecm_db_host_connections_defunct_by_src_and_dest(ip_addr_t src_addr, ip_addr_t dest_addr); |
| #endif |
| |
| struct ecm_db_host_instance *ecm_db_host_alloc(void); |
| void ecm_db_host_add(struct ecm_db_host_instance *hi, |
| ip_addr_t address, |
| bool on_link, |
| ecm_db_host_final_callback_t final, void *arg); |
| |
| #ifdef ECM_STATE_OUTPUT_ENABLE |
| int ecm_db_host_state_get(struct ecm_state_file_instance *sfi, struct ecm_db_host_instance *hi); |
| int ecm_db_host_hash_table_lengths_get(int index); |
| int ecm_db_host_hash_index_get_next(int index); |
| int ecm_db_host_hash_index_get_first(void); |
| #endif |
| |
| bool ecm_db_host_init(struct dentry *dentry); |
| void ecm_db_host_exit(void); |