6295d50b37
This fixes the undesirable pause in the dump commands in case there is nothing to dump. Change-Id: I0554556c9e442038aa2a1ed8c88234f21f7fe9b9 Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
265 lines
7.4 KiB
C
265 lines
7.4 KiB
C
/*
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* Copyright (c) 2016 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef included_acl_h
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#define included_acl_h
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#include <vnet/vnet.h>
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#include <vnet/ip/ip.h>
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#include <vnet/l2/l2_output.h>
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#include <vppinfra/hash.h>
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#include <vppinfra/error.h>
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#include <vppinfra/bitmap.h>
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#include <vppinfra/elog.h>
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#include "bihash_40_8.h"
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#include "fa_node.h"
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#define ACL_PLUGIN_VERSION_MAJOR 1
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#define ACL_PLUGIN_VERSION_MINOR 3
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#define UDP_SESSION_IDLE_TIMEOUT_SEC 600
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#define TCP_SESSION_IDLE_TIMEOUT_SEC (3600*24)
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#define TCP_SESSION_TRANSIENT_TIMEOUT_SEC 120
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extern vlib_node_registration_t acl_in_node;
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extern vlib_node_registration_t acl_out_node;
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void input_acl_packet_match(u32 sw_if_index, vlib_buffer_t * b0, u32 *nextp, u32 *acl_match_p, u32 *rule_match_p, u32 *trace_bitmap);
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void output_acl_packet_match(u32 sw_if_index, vlib_buffer_t * b0, u32 *nextp, u32 *acl_match_p, u32 *rule_match_p, u32 *trace_bitmap);
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enum acl_timeout_e {
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ACL_TIMEOUT_UDP_IDLE = 0,
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ACL_TIMEOUT_TCP_IDLE,
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ACL_TIMEOUT_TCP_TRANSIENT,
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ACL_N_TIMEOUTS
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};
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enum address_e { IP4, IP6 };
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typedef struct
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{
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enum address_e type;
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union {
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ip6_address_t ip6;
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ip4_address_t ip4;
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} addr;
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} address_t;
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/*
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* ACL rules
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*/
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typedef struct
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{
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u8 is_permit;
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u8 is_ipv6;
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ip46_address_t src;
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u8 src_prefixlen;
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ip46_address_t dst;
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u8 dst_prefixlen;
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u8 proto;
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u16 src_port_or_type_first;
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u16 src_port_or_type_last;
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u16 dst_port_or_code_first;
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u16 dst_port_or_code_last;
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u8 tcp_flags_value;
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u8 tcp_flags_mask;
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} acl_rule_t;
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typedef struct
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{
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u8 is_permit;
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u8 is_ipv6;
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u8 src_mac[6];
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u8 src_mac_mask[6];
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ip46_address_t src_ip_addr;
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u8 src_prefixlen;
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} macip_acl_rule_t;
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/*
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* ACL
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*/
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typedef struct
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{
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u8 tag[64];
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u32 count;
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acl_rule_t *rules;
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} acl_list_t;
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typedef struct
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{
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u8 tag[64];
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u32 count;
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macip_acl_rule_t *rules;
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/* References to the classifier tables that will enforce the rules */
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u32 ip4_table_index;
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u32 ip6_table_index;
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u32 l2_table_index;
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} macip_acl_list_t;
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typedef struct {
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/* API message ID base */
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u16 msg_id_base;
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acl_list_t *acls; /* Pool of ACLs */
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macip_acl_list_t *macip_acls; /* Pool of MAC-IP ACLs */
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/* ACLs associated with interfaces */
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u32 **input_acl_vec_by_sw_if_index;
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u32 **output_acl_vec_by_sw_if_index;
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/*
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* Classify tables used to grab the packets for the ACL check,
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* and serving as the 5-tuple session tables at the same time
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*/
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u32 *acl_ip4_input_classify_table_by_sw_if_index;
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u32 *acl_ip6_input_classify_table_by_sw_if_index;
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u32 *acl_ip4_output_classify_table_by_sw_if_index;
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u32 *acl_ip6_output_classify_table_by_sw_if_index;
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/* MACIP (input) ACLs associated with the interfaces */
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u32 *macip_acl_by_sw_if_index;
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/* bitmaps when set the processing is enabled on the interface */
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uword *fa_in_acl_on_sw_if_index;
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uword *fa_out_acl_on_sw_if_index;
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/* bitmap, when set the hash is initialized */
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uword *fa_sessions_on_sw_if_index;
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clib_bihash_40_8_t *fa_sessions_by_sw_if_index;
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/* The process node which orcherstrates the cleanup */
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u32 fa_cleaner_node_index;
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/* FA session timeouts, in seconds */
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u32 session_timeout_sec[ACL_N_TIMEOUTS];
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/* session add/delete counters */
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u64 *fa_session_adds_by_sw_if_index;
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u64 *fa_session_dels_by_sw_if_index;
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/* L2 datapath glue */
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/* next indices within L2 classifiers for ip4/ip6 fa L2 nodes */
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u32 l2_input_classify_next_acl_ip4;
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u32 l2_input_classify_next_acl_ip6;
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u32 l2_output_classify_next_acl_ip4;
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u32 l2_output_classify_next_acl_ip6;
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/* next node indices for L2 dispatch */
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u32 fa_acl_in_ip4_l2_node_feat_next_node_index[32];
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u32 fa_acl_in_ip6_l2_node_feat_next_node_index[32];
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u32 fa_acl_out_ip4_l2_node_feat_next_node_index[32];
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u32 fa_acl_out_ip6_l2_node_feat_next_node_index[32];
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/* EH values that we can skip over */
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uword *fa_ipv6_known_eh_bitmap;
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/* whether to match L4 ACEs with ports on the non-initial fragment */
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int l4_match_nonfirst_fragment;
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/* conn table per-interface conn table parameters */
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u32 fa_conn_table_hash_num_buckets;
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uword fa_conn_table_hash_memory_size;
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u64 fa_conn_table_max_entries;
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/*
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* If the cleaner has to delete more than this number
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* of connections, it halves the sleep time.
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*/
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#define ACL_FA_DEFAULT_MAX_DELETED_SESSIONS_PER_INTERVAL 100
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u64 fa_max_deleted_sessions_per_interval;
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/*
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* If the cleaner deletes less than these connections,
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* it increases the wait time by the "increment"
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*/
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#define ACL_FA_DEFAULT_MIN_DELETED_SESSIONS_PER_INTERVAL 1
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u64 fa_min_deleted_sessions_per_interval;
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#define ACL_FA_DEFAULT_CLEANER_WAIT_TIME_INCREMENT 0.1
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f64 fa_cleaner_wait_time_increment;
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u64 fa_current_cleaner_timer_wait_interval;
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/* per-worker data related t conn management */
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acl_fa_per_worker_data_t *per_worker_data;
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/* Configured session timeout */
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u64 session_timeout[ACL_N_TIMEOUTS];
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/* Counters for the cleaner thread */
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#define foreach_fa_cleaner_counter \
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_(fa_cleaner_cnt_delete_by_sw_index, "delete_by_sw_index events") \
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_(fa_cleaner_cnt_delete_by_sw_index_ok, "delete_by_sw_index handled ok") \
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_(fa_cleaner_cnt_unknown_event, "unknown events received") \
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_(fa_cleaner_cnt_timer_restarted, "session idle timers restarted") \
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_(fa_cleaner_cnt_wait_with_timeout, "event wait with timeout called") \
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_(fa_cleaner_cnt_wait_without_timeout, "event wait w/o timeout called") \
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_(fa_cleaner_cnt_event_cycles, "total event cycles") \
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/* end of counters */
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#define _(id, desc) u32 id;
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foreach_fa_cleaner_counter
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#undef _
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/* convenience */
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vlib_main_t * vlib_main;
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vnet_main_t * vnet_main;
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} acl_main_t;
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#define foreach_acl_eh \
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_(HOPBYHOP , 0 , "IPv6ExtHdrHopByHop") \
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_(ROUTING , 43 , "IPv6ExtHdrRouting") \
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_(DESTOPT , 60 , "IPv6ExtHdrDestOpt") \
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_(FRAGMENT , 44 , "IPv6ExtHdrFragment") \
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_(MOBILITY , 135, "Mobility Header") \
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_(HIP , 139, "Experimental use Host Identity Protocol") \
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_(SHIM6 , 140, "Shim6 Protocol") \
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_(EXP1 , 253, "Use for experimentation and testing") \
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_(EXP2 , 254, "Use for experimentation and testing")
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/*
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"No Next Header" is not a header.
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Also, Fragment header needs special processing.
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_(NONEXT , 59 , "NoNextHdr") \
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ESP is hiding its internal format, so no point in trying to go past it.
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_(ESP , 50 , "EncapsulatingSecurityPayload") \
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AH has a special treatment of its length, it is in 32-bit words, not 64-bit words like the rest.
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_(AUTH , 51 , "Authentication Header") \
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*/
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typedef enum {
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#define _(N, v, s) ACL_EH_##N = v,
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foreach_acl_eh
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#undef _
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} acl_eh_t;
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extern acl_main_t acl_main;
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#endif
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