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 (1ULL<<30)
22 #define ACL_FA_CONN_TABLE_DEFAULT_MAX_ENTRIES 500000
28 u16 mask_type_index_lsb;
32 u8 is_nonfirst_fragment:1;
48 u16 lsb_of_sw_if_index;
53 } fa_session_l4_key_t;
57 ip46_address_t addr[2];
58 fa_session_l4_key_t l4;
59 /* This field should align with u64 value in bihash_40_8 keyvalue struct */
62 clib_bihash_kv_40_8_t kv;
66 u8 opaque[sizeof(fa_5tuple_t)];
71 fa_5tuple_t info; /* (5+1)*8 = 48 bytes */
72 u64 last_active_time; /* +8 bytes = 56 */
73 u32 sw_if_index; /* +4 bytes = 60 */
77 } tcp_flags_seen; ; /* +2 bytes = 62 */
78 u16 thread_index; /* +2 bytes = 64 */
79 u64 link_enqueue_time; /* 8 byte = 8 */
80 u32 link_prev_idx; /* +4 bytes = 12 */
81 u32 link_next_idx; /* +4 bytes = 16 */
82 u8 link_list_id; /* +1 bytes = 17 */
83 u8 deleted; /* +1 bytes = 18 */
84 u8 reserved1[6]; /* +6 bytes = 24 */
85 u64 reserved2[5]; /* +5*8 bytes = 64 */
88 #define FA_POLICY_EPOCH_MASK 0x7fff
89 /* input policy epochs have the MSB set */
90 #define FA_POLICY_EPOCH_IS_INPUT 0x8000
93 /* This structure is used to fill in the u64 value
94 in the per-sw-if-index hash table */
101 u16 intf_policy_epoch;
104 } fa_full_session_id_t;
107 * A few compile-time constraints on the size and the layout of the union, to ensure
108 * it makes sense both for bihash and for us.
111 #define CT_ASSERT_EQUAL(name, x,y) typedef int assert_ ## name ## _compile_time_assertion_failed[((x) == (y))-1]
112 CT_ASSERT_EQUAL(fa_l3_key_size_is_40, offsetof(fa_5tuple_t, pkt), offsetof(clib_bihash_kv_40_8_t, value));
113 CT_ASSERT_EQUAL(fa_l4_key_t_is_8, sizeof(fa_session_l4_key_t), sizeof(u64));
114 CT_ASSERT_EQUAL(fa_packet_info_t_is_8, sizeof(fa_packet_info_t), sizeof(u64));
115 CT_ASSERT_EQUAL(fa_l3_kv_size_is_48, sizeof(fa_5tuple_t), sizeof(clib_bihash_kv_40_8_t));
117 /* Let's try to fit within two cachelines */
118 CT_ASSERT_EQUAL(fa_session_t_size_is_128, sizeof(fa_session_t), 128);
120 /* Session ID MUST be the same as u64 */
121 CT_ASSERT_EQUAL(fa_full_session_id_size_is_64, sizeof(fa_full_session_id_t), sizeof(u64));
122 #undef CT_ASSERT_EQUAL
124 #define FA_SESSION_BOGUS_INDEX ~0
127 /* The pool of sessions managed by this worker */
128 fa_session_t *fa_sessions_pool;
129 /* per-worker ACL_N_TIMEOUTS of conn lists */
130 u32 *fa_conn_list_head;
131 u32 *fa_conn_list_tail;
132 /* expiry time set whenever an element is enqueued */
133 u64 *fa_conn_list_head_expiry_time;
134 /* adds and deletes per-worker-per-interface */
135 u64 *fa_session_dels_by_sw_if_index;
136 u64 *fa_session_adds_by_sw_if_index;
137 /* sessions deleted due to epoch change */
138 u64 *fa_session_epoch_change_by_sw_if_index;
139 /* Vector of expired connections retrieved from lists */
141 /* the earliest next expiry time */
142 u64 next_expiry_time;
143 /* if not zero, look at all the elements until their enqueue timestamp is after below one */
144 u64 requeue_until_time;
145 /* Current time between the checks */
146 u64 current_time_wait_interval;
147 /* Counter of how many sessions we did delete */
148 u64 cnt_deleted_sessions;
149 /* Counter of already deleted sessions being deleted - should not increment unless a bug */
150 u64 cnt_already_deleted_sessions;
151 /* Number of times we requeued a session to a head of the list */
152 u64 cnt_session_timer_restarted;
153 /* swipe up to this enqueue time, rather than following the timeouts */
155 /* bitmap of sw_if_index serviced by this worker */
156 uword *serviced_sw_if_index_bitmap;
157 /* bitmap of sw_if_indices to clear. set by main thread, cleared by worker */
158 uword *pending_clear_sw_if_index_bitmap;
159 /* atomic, indicates that the swipe-deletion of connections is in progress */
160 u32 clear_in_process;
161 /* Interrupt is pending from main thread */
162 int interrupt_is_pending;
164 * Interrupt node on the worker thread sets this if it knows there is
165 * more work to do, but it has to finish to avoid hogging the
168 int interrupt_is_needed;
170 * Set to indicate that the interrupt node wants to get less interrupts
171 * because there is not enough work for the current rate.
173 int interrupt_is_unwanted;
175 * Set to copy of a "generation" counter in main thread so we can sync the interrupts.
177 int interrupt_generation;
178 } acl_fa_per_worker_data_t;
189 ACL_FA_CLEANER_RESCHEDULE = 1,
190 ACL_FA_CLEANER_DELETE_BY_SW_IF_INDEX,
191 } acl_fa_cleaner_process_event_e;
193 void acl_fa_enable_disable(u32 sw_if_index, int is_input, int enable_disable);
195 void show_fa_sessions_hash(vlib_main_t * vm, u32 verbose);
197 u8 *format_acl_plugin_5tuple (u8 * s, va_list * args);
199 /* use like: elog_acl_maybe_trace_X1(am, "foobar: %d", "i4", int32_value); */
201 #define elog_acl_maybe_trace_X1(am, acl_elog_trace_format_label, acl_elog_trace_format_args, acl_elog_val1) \
203 if (am->trace_sessions) { \
204 CLIB_UNUSED(struct { u8 available_space[18 - sizeof(acl_elog_val1)]; } *static_check); \
205 u16 thread_index = os_get_thread_index (); \
206 vlib_worker_thread_t * w = vlib_worker_threads + thread_index; \
207 ELOG_TYPE_DECLARE (e) = \
209 .format = "(%02d) " acl_elog_trace_format_label, \
210 .format_args = "i2" acl_elog_trace_format_args, \
215 typeof(acl_elog_val1) val1; \
217 ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e, w->elog_track); \
218 ed->thread = thread_index; \
219 ed->val1 = acl_elog_val1; \
224 /* use like: elog_acl_maybe_trace_X2(am, "foobar: %d some u64: %lu", "i4i8", int32_value, int64_value); */
226 #define elog_acl_maybe_trace_X2(am, acl_elog_trace_format_label, acl_elog_trace_format_args, \
227 acl_elog_val1, acl_elog_val2) \
229 if (am->trace_sessions) { \
230 CLIB_UNUSED(struct { u8 available_space[18 - sizeof(acl_elog_val1) - sizeof(acl_elog_val2)]; } *static_check); \
231 u16 thread_index = os_get_thread_index (); \
232 vlib_worker_thread_t * w = vlib_worker_threads + thread_index; \
233 ELOG_TYPE_DECLARE (e) = \
235 .format = "(%02d) " acl_elog_trace_format_label, \
236 .format_args = "i2" acl_elog_trace_format_args, \
241 typeof(acl_elog_val1) val1; \
242 typeof(acl_elog_val2) val2; \
244 ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e, w->elog_track); \
245 ed->thread = thread_index; \
246 ed->val1 = acl_elog_val1; \
247 ed->val2 = acl_elog_val2; \
252 /* use like: elog_acl_maybe_trace_X3(am, "foobar: %d some u64 %lu baz: %d", "i4i8i4", int32_value, u64_value, int_value); */
254 #define elog_acl_maybe_trace_X3(am, acl_elog_trace_format_label, acl_elog_trace_format_args, acl_elog_val1, \
255 acl_elog_val2, acl_elog_val3) \
257 if (am->trace_sessions) { \
258 CLIB_UNUSED(struct { u8 available_space[18 - sizeof(acl_elog_val1) - sizeof(acl_elog_val2) \
259 - sizeof(acl_elog_val3)]; } *static_check); \
260 u16 thread_index = os_get_thread_index (); \
261 vlib_worker_thread_t * w = vlib_worker_threads + thread_index; \
262 ELOG_TYPE_DECLARE (e) = \
264 .format = "(%02d) " acl_elog_trace_format_label, \
265 .format_args = "i2" acl_elog_trace_format_args, \
270 typeof(acl_elog_val1) val1; \
271 typeof(acl_elog_val2) val2; \
272 typeof(acl_elog_val3) val3; \
274 ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e, w->elog_track); \
275 ed->thread = thread_index; \
276 ed->val1 = acl_elog_val1; \
277 ed->val2 = acl_elog_val2; \
278 ed->val3 = acl_elog_val3; \
283 /* 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); */
285 #define elog_acl_maybe_trace_X4(am, acl_elog_trace_format_label, acl_elog_trace_format_args, acl_elog_val1, \
286 acl_elog_val2, acl_elog_val3, acl_elog_val4) \
288 if (am->trace_sessions) { \
289 CLIB_UNUSED(struct { u8 available_space[18 - sizeof(acl_elog_val1) - sizeof(acl_elog_val2) \
290 - sizeof(acl_elog_val3) -sizeof(acl_elog_val4)]; } *static_check); \
291 u16 thread_index = os_get_thread_index (); \
292 vlib_worker_thread_t * w = vlib_worker_threads + thread_index; \
293 ELOG_TYPE_DECLARE (e) = \
295 .format = "(%02d) " acl_elog_trace_format_label, \
296 .format_args = "i2" acl_elog_trace_format_args, \
301 typeof(acl_elog_val1) val1; \
302 typeof(acl_elog_val2) val2; \
303 typeof(acl_elog_val3) val3; \
304 typeof(acl_elog_val4) val4; \
306 ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e, w->elog_track); \
307 ed->thread = thread_index; \
308 ed->val1 = acl_elog_val1; \
309 ed->val2 = acl_elog_val2; \
310 ed->val3 = acl_elog_val3; \
311 ed->val4 = acl_elog_val4; \