5 #include <vppinfra/bihash_40_8.h>
7 // #define FA_NODE_VERBOSE_DEBUG 3
9 #define TCP_FLAG_FIN 0x01
10 #define TCP_FLAG_SYN 0x02
11 #define TCP_FLAG_RST 0x04
12 #define TCP_FLAG_PUSH 0x08
13 #define TCP_FLAG_ACK 0x10
14 #define TCP_FLAG_URG 0x20
15 #define TCP_FLAG_ECE 0x40
16 #define TCP_FLAG_CWR 0x80
17 #define TCP_FLAGS_RSTFINACKSYN (TCP_FLAG_RST + TCP_FLAG_FIN + TCP_FLAG_SYN + TCP_FLAG_ACK)
18 #define TCP_FLAGS_ACKSYN (TCP_FLAG_SYN + TCP_FLAG_ACK)
20 #define ACL_FA_CONN_TABLE_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
21 #define ACL_FA_CONN_TABLE_DEFAULT_HASH_MEMORY_SIZE (1<<30)
22 #define ACL_FA_CONN_TABLE_DEFAULT_MAX_ENTRIES 1000000
28 u16 mask_type_index_lsb;
32 u8 is_nonfirst_fragment:1;
43 u16 lsb_of_sw_if_index;
45 } fa_session_l4_key_t;
49 ip46_address_t addr[2];
50 fa_session_l4_key_t l4;
51 /* This field should align with u64 value in bihash_40_8 keyvalue struct */
54 clib_bihash_kv_40_8_t kv;
58 u8 opaque[sizeof(fa_5tuple_t)];
63 fa_5tuple_t info; /* (5+1)*8 = 48 bytes */
64 u64 last_active_time; /* +8 bytes = 56 */
65 u32 sw_if_index; /* +4 bytes = 60 */
69 } tcp_flags_seen; ; /* +2 bytes = 62 */
70 u16 thread_index; /* +2 bytes = 64 */
71 u64 link_enqueue_time; /* 8 byte = 8 */
72 u32 link_prev_idx; /* +4 bytes = 12 */
73 u32 link_next_idx; /* +4 bytes = 16 */
74 u8 link_list_id; /* +1 bytes = 17 */
75 u8 reserved1[7]; /* +7 bytes = 24 */
76 u64 reserved2[5]; /* +5*8 bytes = 64 */
79 #define FA_POLICY_EPOCH_MASK 0x7fff
80 /* input policy epochs have the MSB set */
81 #define FA_POLICY_EPOCH_IS_INPUT 0x8000
84 /* This structure is used to fill in the u64 value
85 in the per-sw-if-index hash table */
92 u16 intf_policy_epoch;
95 } fa_full_session_id_t;
98 * A few compile-time constraints on the size and the layout of the union, to ensure
99 * it makes sense both for bihash and for us.
102 #define CT_ASSERT_EQUAL(name, x,y) typedef int assert_ ## name ## _compile_time_assertion_failed[((x) == (y))-1]
103 CT_ASSERT_EQUAL(fa_l3_key_size_is_40, offsetof(fa_5tuple_t, pkt), offsetof(clib_bihash_kv_40_8_t, value));
104 CT_ASSERT_EQUAL(fa_l4_key_t_is_8, sizeof(fa_session_l4_key_t), sizeof(u64));
105 CT_ASSERT_EQUAL(fa_packet_info_t_is_8, sizeof(fa_packet_info_t), sizeof(u64));
106 CT_ASSERT_EQUAL(fa_l3_kv_size_is_48, sizeof(fa_5tuple_t), sizeof(clib_bihash_kv_40_8_t));
108 /* Let's try to fit within two cachelines */
109 CT_ASSERT_EQUAL(fa_session_t_size_is_128, sizeof(fa_session_t), 128);
111 /* Session ID MUST be the same as u64 */
112 CT_ASSERT_EQUAL(fa_full_session_id_size_is_64, sizeof(fa_full_session_id_t), sizeof(u64));
113 #undef CT_ASSERT_EQUAL
116 /* The pool of sessions managed by this worker */
117 fa_session_t *fa_sessions_pool;
118 /* per-worker ACL_N_TIMEOUTS of conn lists */
119 u32 *fa_conn_list_head;
120 u32 *fa_conn_list_tail;
121 /* adds and deletes per-worker-per-interface */
122 u64 *fa_session_dels_by_sw_if_index;
123 u64 *fa_session_adds_by_sw_if_index;
124 /* sessions deleted due to epoch change */
125 u64 *fa_session_epoch_change_by_sw_if_index;
126 /* Vector of expired connections retrieved from lists */
128 /* the earliest next expiry time */
129 u64 next_expiry_time;
130 /* if not zero, look at all the elements until their enqueue timestamp is after below one */
131 u64 requeue_until_time;
132 /* Current time between the checks */
133 u64 current_time_wait_interval;
134 /* Counter of how many sessions we did delete */
135 u64 cnt_deleted_sessions;
136 /* Counter of already deleted sessions being deleted - should not increment unless a bug */
137 u64 cnt_already_deleted_sessions;
138 /* Number of times we requeued a session to a head of the list */
139 u64 cnt_session_timer_restarted;
140 /* swipe up to this enqueue time, rather than following the timeouts */
142 /* bitmap of sw_if_index serviced by this worker */
143 uword *serviced_sw_if_index_bitmap;
144 /* bitmap of sw_if_indices to clear. set by main thread, cleared by worker */
145 uword *pending_clear_sw_if_index_bitmap;
146 /* atomic, indicates that the swipe-deletion of connections is in progress */
147 u32 clear_in_process;
148 /* Interrupt is pending from main thread */
149 int interrupt_is_pending;
151 * Interrupt node on the worker thread sets this if it knows there is
152 * more work to do, but it has to finish to avoid hogging the
155 int interrupt_is_needed;
157 * Set to indicate that the interrupt node wants to get less interrupts
158 * because there is not enough work for the current rate.
160 int interrupt_is_unwanted;
162 * Set to copy of a "generation" counter in main thread so we can sync the interrupts.
164 int interrupt_generation;
165 } acl_fa_per_worker_data_t;
176 ACL_FA_CLEANER_RESCHEDULE = 1,
177 ACL_FA_CLEANER_DELETE_BY_SW_IF_INDEX,
178 } acl_fa_cleaner_process_event_e;
180 void acl_fa_enable_disable(u32 sw_if_index, int is_input, int enable_disable);
182 void show_fa_sessions_hash(vlib_main_t * vm, u32 verbose);
184 u8 *format_acl_plugin_5tuple (u8 * s, va_list * args);
186 /* use like: elog_acl_maybe_trace_X1(am, "foobar: %d", "i4", int32_value); */
188 #define elog_acl_maybe_trace_X1(am, acl_elog_trace_format_label, acl_elog_trace_format_args, acl_elog_val1) \
190 if (am->trace_sessions) { \
191 CLIB_UNUSED(struct { u8 available_space[18 - sizeof(acl_elog_val1)]; } *static_check); \
192 u16 thread_index = os_get_thread_index (); \
193 vlib_worker_thread_t * w = vlib_worker_threads + thread_index; \
194 ELOG_TYPE_DECLARE (e) = \
196 .format = "(%02d) " acl_elog_trace_format_label, \
197 .format_args = "i2" acl_elog_trace_format_args, \
202 typeof(acl_elog_val1) val1; \
204 ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e, w->elog_track); \
205 ed->thread = thread_index; \
206 ed->val1 = acl_elog_val1; \
211 /* use like: elog_acl_maybe_trace_X2(am, "foobar: %d some u64: %lu", "i4i8", int32_value, int64_value); */
213 #define elog_acl_maybe_trace_X2(am, acl_elog_trace_format_label, acl_elog_trace_format_args, \
214 acl_elog_val1, acl_elog_val2) \
216 if (am->trace_sessions) { \
217 CLIB_UNUSED(struct { u8 available_space[18 - sizeof(acl_elog_val1) - sizeof(acl_elog_val2)]; } *static_check); \
218 u16 thread_index = os_get_thread_index (); \
219 vlib_worker_thread_t * w = vlib_worker_threads + thread_index; \
220 ELOG_TYPE_DECLARE (e) = \
222 .format = "(%02d) " acl_elog_trace_format_label, \
223 .format_args = "i2" acl_elog_trace_format_args, \
228 typeof(acl_elog_val1) val1; \
229 typeof(acl_elog_val2) val2; \
231 ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e, w->elog_track); \
232 ed->thread = thread_index; \
233 ed->val1 = acl_elog_val1; \
234 ed->val2 = acl_elog_val2; \
239 /* use like: elog_acl_maybe_trace_X3(am, "foobar: %d some u64 %lu baz: %d", "i4i8i4", int32_value, u64_value, int_value); */
241 #define elog_acl_maybe_trace_X3(am, acl_elog_trace_format_label, acl_elog_trace_format_args, acl_elog_val1, \
242 acl_elog_val2, acl_elog_val3) \
244 if (am->trace_sessions) { \
245 CLIB_UNUSED(struct { u8 available_space[18 - sizeof(acl_elog_val1) - sizeof(acl_elog_val2) \
246 - sizeof(acl_elog_val3)]; } *static_check); \
247 u16 thread_index = os_get_thread_index (); \
248 vlib_worker_thread_t * w = vlib_worker_threads + thread_index; \
249 ELOG_TYPE_DECLARE (e) = \
251 .format = "(%02d) " acl_elog_trace_format_label, \
252 .format_args = "i2" acl_elog_trace_format_args, \
257 typeof(acl_elog_val1) val1; \
258 typeof(acl_elog_val2) val2; \
259 typeof(acl_elog_val3) val3; \
261 ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e, w->elog_track); \
262 ed->thread = thread_index; \
263 ed->val1 = acl_elog_val1; \
264 ed->val2 = acl_elog_val2; \
265 ed->val3 = acl_elog_val3; \
270 /* use like: elog_acl_maybe_trace_X4(am, "foobar: %d some int %d baz: %d bar: %d", "i4i4i4i4", int32_value, int32_value2, int_value, int_value); */
272 #define elog_acl_maybe_trace_X4(am, acl_elog_trace_format_label, acl_elog_trace_format_args, acl_elog_val1, \
273 acl_elog_val2, acl_elog_val3, acl_elog_val4) \
275 if (am->trace_sessions) { \
276 CLIB_UNUSED(struct { u8 available_space[18 - sizeof(acl_elog_val1) - sizeof(acl_elog_val2) \
277 - sizeof(acl_elog_val3) -sizeof(acl_elog_val4)]; } *static_check); \
278 u16 thread_index = os_get_thread_index (); \
279 vlib_worker_thread_t * w = vlib_worker_threads + thread_index; \
280 ELOG_TYPE_DECLARE (e) = \
282 .format = "(%02d) " acl_elog_trace_format_label, \
283 .format_args = "i2" acl_elog_trace_format_args, \
288 typeof(acl_elog_val1) val1; \
289 typeof(acl_elog_val2) val2; \
290 typeof(acl_elog_val3) val3; \
291 typeof(acl_elog_val4) val4; \
293 ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e, w->elog_track); \
294 ed->thread = thread_index; \
295 ed->val1 = acl_elog_val1; \
296 ed->val2 = acl_elog_val2; \
297 ed->val3 = acl_elog_val3; \
298 ed->val4 = acl_elog_val4; \