b09167f33d
This is the commit from the accumulated work in the github ACL branch, to move it to gerrit. Change-Id: I85a6b0df0d3dd3c3c7588e92a1e22c553e4b6ef7 Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
151 lines
4.2 KiB
C
151 lines
4.2 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_l2sess_h__
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#define __included_l2sess_h__
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#include <vnet/vnet.h>
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#include <vnet/ip/ip.h>
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#include <vnet/ethernet/ethernet.h>
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#include <vppinfra/hash.h>
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#include <vppinfra/error.h>
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#include <vppinfra/elog.h>
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#include <vppinfra/timing_wheel.h>
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#include <vnet/l2/l2_output.h>
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#include <vnet/l2/l2_input.h>
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#define _(node_name, node_var, is_out, is_ip6, is_track)
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#undef _
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#define foreach_l2sess_node \
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_("aclp-l2s-input-ip4-add", l2sess_in_ip4_add, 0, 0, 0) \
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_("aclp-l2s-input-ip6-add", l2sess_in_ip6_add, 0, 1, 0) \
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_("aclp-l2s-output-ip4-add", l2sess_out_ip4_add, 1, 0, 0) \
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_("aclp-l2s-output-ip6-add", l2sess_out_ip6_add, 1, 1, 0) \
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_("aclp-l2s-input-ip4-track", l2sess_in_ip4_track, 0, 0, 1) \
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_("aclp-l2s-input-ip6-track", l2sess_in_ip6_track, 0, 1, 1) \
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_("aclp-l2s-output-ip4-track",l2sess_out_ip4_track, 1, 0, 1) \
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_("aclp-l2s-output-ip6-track", l2sess_out_ip6_track, 1, 1, 1)
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#define _(node_name, node_var, is_out, is_ip6, is_track) \
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extern vlib_node_registration_t node_var;
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foreach_l2sess_node
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#undef _
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#define TCP_FLAG_FIN 0x01
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#define TCP_FLAG_SYN 0x02
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#define TCP_FLAG_RST 0x04
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#define TCP_FLAG_PUSH 0x08
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#define TCP_FLAG_ACK 0x10
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#define TCP_FLAG_URG 0x20
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#define TCP_FLAG_ECE 0x40
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#define TCP_FLAG_CWR 0x80
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#define TCP_FLAGS_RSTFINACKSYN (TCP_FLAG_RST + TCP_FLAG_FIN + TCP_FLAG_SYN + TCP_FLAG_ACK)
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#define TCP_FLAGS_ACKSYN (TCP_FLAG_SYN + TCP_FLAG_ACK)
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typedef struct {
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ip46_address_t addr;
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u64 active_time;
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u64 n_packets;
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u64 n_bytes;
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u16 port;
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} l2s_session_side_t;
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enum {
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L2S_SESSION_SIDE_IN = 0,
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L2S_SESSION_SIDE_OUT,
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L2S_N_SESSION_SIDES
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};
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typedef struct {
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u64 create_time;
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l2s_session_side_t side[L2S_N_SESSION_SIDES];
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u8 l4_proto;
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u8 is_ip6;
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u16 tcp_flags_seen; /* u16 because of two sides */
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} l2s_session_t;
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#define PROD
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#ifdef PROD
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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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#else
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#define UDP_SESSION_IDLE_TIMEOUT_SEC 15
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#define TCP_SESSION_IDLE_TIMEOUT_SEC 15
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#define TCP_SESSION_TRANSIENT_TIMEOUT_SEC 5
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#endif
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typedef struct {
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/*
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* the next two fields are present for all nodes, but
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* only one of them is used per node - depending
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* on whether the node is an input or output one.
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*/
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#define _(node_name, node_var, is_out, is_ip6, is_track) \
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u32 node_var ## _input_next_node_index[32]; \
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l2_output_next_nodes_st node_var ## _next_nodes;
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foreach_l2sess_node
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#undef _
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l2_output_next_nodes_st output_next_nodes;
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/* Next indices of the tracker nodes */
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u32 next_slot_track_node_by_is_ip6_is_out[2][2];
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/*
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* Pairing of "forward" and "reverse" tables by table index.
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* Each relationship has two entries - for one and the other table,
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* so it is bidirectional.
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*/
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u32 *fwd_to_rev_by_table_index;
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/*
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* The vector of per-interface session pools
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*/
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l2s_session_t *sessions;
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/* The session timeouts */
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u64 tcp_session_transient_timeout;
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u64 tcp_session_idle_timeout;
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u64 udp_session_idle_timeout;
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/* Timing wheel to time out the idle sessions */
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timing_wheel_t timing_wheel;
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u32 *data_from_advancing_timing_wheel;
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u64 timer_wheel_next_expiring_time;
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u64 timer_wheel_tick;
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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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ethernet_main_t * ethernet_main;
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/* Counter(s) */
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u64 counter_attempted_delete_free_session;
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} l2sess_main_t;
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l2sess_main_t l2sess_main;
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/* Just exposed for acl.c */
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void
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l2sess_vlib_plugin_register (vlib_main_t * vm, void * hh,
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int from_early_init);
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#endif /* __included_l2sess_h__ */
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