5 #include "bihash_40_8.h"
7 #define TCP_FLAG_FIN 0x01
8 #define TCP_FLAG_SYN 0x02
9 #define TCP_FLAG_RST 0x04
10 #define TCP_FLAG_PUSH 0x08
11 #define TCP_FLAG_ACK 0x10
12 #define TCP_FLAG_URG 0x20
13 #define TCP_FLAG_ECE 0x40
14 #define TCP_FLAG_CWR 0x80
15 #define TCP_FLAGS_RSTFINACKSYN (TCP_FLAG_RST + TCP_FLAG_FIN + TCP_FLAG_SYN + TCP_FLAG_ACK)
16 #define TCP_FLAGS_ACKSYN (TCP_FLAG_SYN + TCP_FLAG_ACK)
18 #define ACL_FA_CONN_TABLE_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
19 #define ACL_FA_CONN_TABLE_DEFAULT_HASH_MEMORY_SIZE (1<<30)
20 #define ACL_FA_CONN_TABLE_DEFAULT_MAX_ENTRIES 1000000
26 u16 mask_type_index_lsb;
31 u8 is_nonfirst_fragment:1;
42 u16 lsb_of_sw_if_index;
44 } fa_session_l4_key_t;
48 ip46_address_t addr[2];
49 fa_session_l4_key_t l4;
50 /* This field should align with u64 value in bihash_40_8 keyvalue struct */
53 clib_bihash_kv_40_8_t kv;
58 fa_5tuple_t info; /* (5+1)*8 = 48 bytes */
59 u64 last_active_time; /* +8 bytes = 56 */
60 u32 sw_if_index; /* +4 bytes = 60 */
64 } tcp_flags_seen; ; /* +2 bytes = 62 */
65 u16 thread_index; /* +2 bytes = 64 */
66 u64 link_enqueue_time; /* 8 byte = 8 */
67 u32 link_prev_idx; /* +4 bytes = 12 */
68 u32 link_next_idx; /* +4 bytes = 16 */
69 u8 link_list_id; /* +1 bytes = 17 */
70 u8 reserved1[7]; /* +7 bytes = 24 */
71 u64 reserved2[5]; /* +5*8 bytes = 64 */
75 /* This structure is used to fill in the u64 value
76 in the per-sw-if-index hash table */
86 } fa_full_session_id_t;
89 * A few compile-time constraints on the size and the layout of the union, to ensure
90 * it makes sense both for bihash and for us.
93 #define CT_ASSERT_EQUAL(name, x,y) typedef int assert_ ## name ## _compile_time_assertion_failed[((x) == (y))-1]
94 CT_ASSERT_EQUAL(fa_l3_key_size_is_40, offsetof(fa_5tuple_t, pkt), offsetof(clib_bihash_kv_40_8_t, value));
95 CT_ASSERT_EQUAL(fa_l4_key_t_is_8, sizeof(fa_session_l4_key_t), sizeof(u64));
96 CT_ASSERT_EQUAL(fa_packet_info_t_is_8, sizeof(fa_packet_info_t), sizeof(u64));
97 CT_ASSERT_EQUAL(fa_l3_kv_size_is_48, sizeof(fa_5tuple_t), sizeof(clib_bihash_kv_40_8_t));
99 /* Let's try to fit within two cachelines */
100 CT_ASSERT_EQUAL(fa_session_t_size_is_128, sizeof(fa_session_t), 128);
102 /* Session ID MUST be the same as u64 */
103 CT_ASSERT_EQUAL(fa_full_session_id_size_is_64, sizeof(fa_full_session_id_t), sizeof(u64));
104 #undef CT_ASSERT_EQUAL
107 /* The pool of sessions managed by this worker */
108 fa_session_t *fa_sessions_pool;
109 /* per-worker ACL_N_TIMEOUTS of conn lists */
110 u32 *fa_conn_list_head;
111 u32 *fa_conn_list_tail;
112 /* adds and deletes per-worker-per-interface */
113 u64 *fa_session_dels_by_sw_if_index;
114 u64 *fa_session_adds_by_sw_if_index;
115 /* Vector of expired connections retrieved from lists */
117 /* the earliest next expiry time */
118 u64 next_expiry_time;
119 /* if not zero, look at all the elements until their enqueue timestamp is after below one */
120 u64 requeue_until_time;
121 /* Current time between the checks */
122 u64 current_time_wait_interval;
123 /* Counter of how many sessions we did delete */
124 u64 cnt_deleted_sessions;
125 /* Counter of already deleted sessions being deleted - should not increment unless a bug */
126 u64 cnt_already_deleted_sessions;
127 /* Number of times we requeued a session to a head of the list */
128 u64 cnt_session_timer_restarted;
129 /* swipe up to this enqueue time, rather than following the timeouts */
131 /* bitmap of sw_if_index serviced by this worker */
132 uword *serviced_sw_if_index_bitmap;
133 /* bitmap of sw_if_indices to clear. set by main thread, cleared by worker */
134 uword *pending_clear_sw_if_index_bitmap;
135 /* atomic, indicates that the swipe-deletion of connections is in progress */
136 u32 clear_in_process;
137 /* Interrupt is pending from main thread */
138 int interrupt_is_pending;
140 * Interrupt node on the worker thread sets this if it knows there is
141 * more work to do, but it has to finish to avoid hogging the
144 int interrupt_is_needed;
146 * Set to indicate that the interrupt node wants to get less interrupts
147 * because there is not enough work for the current rate.
149 int interrupt_is_unwanted;
150 } acl_fa_per_worker_data_t;
161 ACL_FA_CLEANER_RESCHEDULE = 1,
162 ACL_FA_CLEANER_DELETE_BY_SW_IF_INDEX,
163 } acl_fa_cleaner_process_event_e;
165 void acl_fa_enable_disable(u32 sw_if_index, int is_input, int enable_disable);
167 void show_fa_sessions_hash(vlib_main_t * vm, u32 verbose);