#define _FA_NODE_H_
#include <stddef.h>
-#include "bihash_40_8.h"
+#include <vppinfra/bihash_16_8.h>
+#include <vppinfra/bihash_40_8.h>
+
+#include <plugins/acl/exported_types.h>
+
+// #define FA_NODE_VERBOSE_DEBUG 3
#define TCP_FLAG_FIN 0x01
#define TCP_FLAG_SYN 0x02
#define TCP_FLAGS_ACKSYN (TCP_FLAG_SYN + TCP_FLAG_ACK)
#define ACL_FA_CONN_TABLE_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
-#define ACL_FA_CONN_TABLE_DEFAULT_HASH_MEMORY_SIZE (1<<30)
-#define ACL_FA_CONN_TABLE_DEFAULT_MAX_ENTRIES 1000000
+#define ACL_FA_CONN_TABLE_DEFAULT_HASH_MEMORY_SIZE (1ULL<<30)
+#define ACL_FA_CONN_TABLE_DEFAULT_MAX_ENTRIES 500000
typedef union {
u64 as_u64;
struct {
+ u32 lc_index;
+ u16 mask_type_index_lsb;
u8 tcp_flags;
u8 tcp_flags_valid:1;
- u8 is_input:1;
u8 l4_valid:1;
u8 is_nonfirst_fragment:1;
+ u8 is_ip6:1;
u8 flags_reserved:4;
};
} fa_packet_info_t;
+typedef enum {
+ FA_SK_L4_FLAG_IS_INPUT = (1 << 0),
+ FA_SK_L4_FLAG_IS_SLOWPATH = (1 << 1),
+} fa_session_l4_key_l4_flags_t;
+
typedef union {
u64 as_u64;
struct {
u16 port[2];
- u16 proto;
- u16 rsvd;
+ union {
+ struct {
+ u8 proto;
+ u8 l4_flags;
+ u16 lsb_of_sw_if_index;
+ };
+ u32 non_port_l4_data;
+ };
};
} fa_session_l4_key_t;
+
+static_always_inline
+int is_session_l4_key_u64_slowpath(u64 l4key) {
+ fa_session_l4_key_t k = { .as_u64 = l4key };
+ return (k.l4_flags & FA_SK_L4_FLAG_IS_SLOWPATH) ? 1 : 0;
+}
+
typedef union {
struct {
- ip46_address_t addr[2];
+ union {
+ struct {
+ /* we put the IPv4 addresses
+ after padding so we can still
+ use them as (shorter) key together with
+ L4 info */
+ u32 l3_zero_pad[6];
+ ip4_address_t ip4_addr[2];
+ };
+ ip6_address_t ip6_addr[2];
+ };
fa_session_l4_key_t l4;
- /* This field should align with u64 value in bihash_40_8 keyvalue struct */
+ /* This field should align with u64 value in bihash_40_8 and bihash_16_8 keyvalue struct */
fa_packet_info_t pkt;
};
- clib_bihash_kv_40_8_t kv;
+ clib_bihash_kv_40_8_t kv_40_8;
+ struct {
+ u64 padding_for_kv_16_8[3];
+ clib_bihash_kv_16_8_t kv_16_8;
+ };
} fa_5tuple_t;
+static_always_inline u8 *
+format_fa_session_l4_key(u8 * s, va_list * args)
+{
+ fa_session_l4_key_t *l4 = va_arg (*args, fa_session_l4_key_t *);
+ int is_input = (l4->l4_flags & FA_SK_L4_FLAG_IS_INPUT) ? 1 : 0;
+ int is_slowpath = (l4->l4_flags & FA_SK_L4_FLAG_IS_SLOWPATH) ? 1 : 0;
+
+ return (format (s, "l4 lsb_of_sw_if_index %d proto %d l4_is_input %d l4_slow_path %d l4_flags 0x%02x port %d -> %d",
+ l4->lsb_of_sw_if_index,
+ l4->proto, is_input, is_slowpath,
+ l4->l4_flags, l4->port[0], l4->port[1]));
+}
typedef struct {
fa_5tuple_t info; /* (5+1)*8 = 48 bytes */
u8 as_u8[2];
u16 as_u16;
} tcp_flags_seen; ; /* +2 bytes = 62 */
- u8 link_list_id; /* +1 bytes = 63 */
- u8 reserved1; /* +1 bytes = 64 */
- u32 link_prev_idx;
- u32 link_next_idx;
- u64 reserved2[7];
+ u16 thread_index; /* +2 bytes = 64 */
+ u64 link_enqueue_time; /* 8 byte = 8 */
+ u32 link_prev_idx; /* +4 bytes = 12 */
+ u32 link_next_idx; /* +4 bytes = 16 */
+ u8 link_list_id; /* +1 bytes = 17 */
+ u8 deleted; /* +1 bytes = 18 */
+ u8 is_ip6; /* +1 bytes = 19 */
+ u8 reserved1[5]; /* +5 bytes = 24 */
+ u64 reserved2[5]; /* +5*8 bytes = 64 */
} fa_session_t;
+#define FA_POLICY_EPOCH_MASK 0x7fff
+/* input policy epochs have the MSB set */
+#define FA_POLICY_EPOCH_IS_INPUT 0x8000
+
+
+/* This structure is used to fill in the u64 value
+ in the per-sw-if-index hash table */
+typedef struct {
+ union {
+ u64 as_u64;
+ struct {
+ u32 session_index;
+ u16 thread_index;
+ u16 intf_policy_epoch;
+ };
+ };
+} fa_full_session_id_t;
/*
* A few compile-time constraints on the size and the layout of the union, to ensure
#define CT_ASSERT_EQUAL(name, x,y) typedef int assert_ ## name ## _compile_time_assertion_failed[((x) == (y))-1]
CT_ASSERT_EQUAL(fa_l3_key_size_is_40, offsetof(fa_5tuple_t, pkt), offsetof(clib_bihash_kv_40_8_t, value));
+CT_ASSERT_EQUAL(fa_ip6_kv_val_at_pkt, offsetof(fa_5tuple_t, pkt), offsetof(fa_5tuple_t, kv_40_8.value));
+CT_ASSERT_EQUAL(fa_ip4_kv_val_at_pkt, offsetof(fa_5tuple_t, pkt), offsetof(fa_5tuple_t, kv_16_8.value));
CT_ASSERT_EQUAL(fa_l4_key_t_is_8, sizeof(fa_session_l4_key_t), sizeof(u64));
CT_ASSERT_EQUAL(fa_packet_info_t_is_8, sizeof(fa_packet_info_t), sizeof(u64));
CT_ASSERT_EQUAL(fa_l3_kv_size_is_48, sizeof(fa_5tuple_t), sizeof(clib_bihash_kv_40_8_t));
+CT_ASSERT_EQUAL(fa_ip4_starts_at_kv16_key, offsetof(fa_5tuple_t, ip4_addr), offsetof(fa_5tuple_t, kv_16_8));
+CT_ASSERT_EQUAL(fa_ip4_and_ip6_kv_value_match, offsetof(fa_5tuple_t, kv_16_8.value), offsetof(fa_5tuple_t, kv_40_8.value));
+
+/* Let's try to fit within two cachelines */
+CT_ASSERT_EQUAL(fa_session_t_size_is_128, sizeof(fa_session_t), 128);
+
+/* Session ID MUST be the same as u64 */
+CT_ASSERT_EQUAL(fa_full_session_id_size_is_64, sizeof(fa_full_session_id_t), sizeof(u64));
-/* Let's try to fit within the cacheline */
-CT_ASSERT_EQUAL(fa_session_t_size_is_64, sizeof(fa_session_t), 128);
+CT_ASSERT_EQUAL(fa_5tuple_opaque_t_must_match_5tuple, sizeof(fa_5tuple_opaque_t), sizeof(fa_5tuple_t));
#undef CT_ASSERT_EQUAL
+#define FA_SESSION_BOGUS_INDEX ~0
+
+typedef struct {
+ /* The pool of sessions managed by this worker */
+ fa_session_t *fa_sessions_pool;
+ /* incoming session change requests from other workers */
+ clib_spinlock_t pending_session_change_request_lock;
+ u64 *pending_session_change_requests;
+ u64 *wip_session_change_requests;
+ u64 rcvd_session_change_requests;
+ u64 sent_session_change_requests;
+ /* per-worker ACL_N_TIMEOUTS of conn lists */
+ u32 *fa_conn_list_head;
+ u32 *fa_conn_list_tail;
+ /* expiry time set whenever an element is enqueued */
+ u64 *fa_conn_list_head_expiry_time;
+ /* adds and deletes per-worker-per-interface */
+ u64 *fa_session_dels_by_sw_if_index;
+ u64 *fa_session_adds_by_sw_if_index;
+ /* sessions deleted due to epoch change */
+ u64 *fa_session_epoch_change_by_sw_if_index;
+ /* Vector of expired connections retrieved from lists */
+ u32 *expired;
+ /* the earliest next expiry time */
+ u64 next_expiry_time;
+ /* if not zero, look at all the elements until their enqueue timestamp is after below one */
+ u64 requeue_until_time;
+ /* Current time between the checks */
+ u64 current_time_wait_interval;
+ /* Counter of how many sessions we did delete */
+ u64 cnt_deleted_sessions;
+ /* Counter of already deleted sessions being deleted - should not increment unless a bug */
+ u64 cnt_already_deleted_sessions;
+ /* Number of times we requeued a session to a head of the list */
+ u64 cnt_session_timer_restarted;
+ /* swipe up to this enqueue time, rather than following the timeouts */
+ u64 swipe_end_time;
+ /* bitmap of sw_if_index serviced by this worker */
+ uword *serviced_sw_if_index_bitmap;
+ /* bitmap of sw_if_indices to clear. set by main thread, cleared by worker */
+ uword *pending_clear_sw_if_index_bitmap;
+ /* atomic, indicates that the swipe-deletion of connections is in progress */
+ u32 clear_in_process;
+ /* Interrupt is pending from main thread */
+ int interrupt_is_pending;
+ /*
+ * Interrupt node on the worker thread sets this if it knows there is
+ * more work to do, but it has to finish to avoid hogging the
+ * core for too long.
+ */
+ int interrupt_is_needed;
+ /*
+ * Set to indicate that the interrupt node wants to get less interrupts
+ * because there is not enough work for the current rate.
+ */
+ int interrupt_is_unwanted;
+ /*
+ * Set to copy of a "generation" counter in main thread so we can sync the interrupts.
+ */
+ int interrupt_generation;
+ /*
+ * work in progress data for the pipelined node operation
+ */
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE];
+ u32 sw_if_indices[VLIB_FRAME_SIZE];
+ fa_5tuple_t fa_5tuples[VLIB_FRAME_SIZE];
+ u64 hashes[VLIB_FRAME_SIZE];
+ u16 nexts[VLIB_FRAME_SIZE];
+
+} acl_fa_per_worker_data_t;
+
typedef enum {
ACL_FA_ERROR_DROP,
void acl_fa_enable_disable(u32 sw_if_index, int is_input, int enable_disable);
+void show_fa_sessions_hash(vlib_main_t * vm, u32 verbose);
+
+u8 *format_acl_plugin_5tuple (u8 * s, va_list * args);
+
+/* use like: elog_acl_maybe_trace_X1(am, "foobar: %d", "i4", int32_value); */
+
+#define elog_acl_maybe_trace_X1(am, acl_elog_trace_format_label, acl_elog_trace_format_args, acl_elog_val1) \
+do { \
+ if (am->trace_sessions) { \
+ CLIB_UNUSED(struct { u8 available_space[18 - sizeof(acl_elog_val1)]; } *static_check); \
+ u16 thread_index = os_get_thread_index (); \
+ vlib_worker_thread_t * w = vlib_worker_threads + thread_index; \
+ ELOG_TYPE_DECLARE (e) = \
+ { \
+ .format = "(%02d) " acl_elog_trace_format_label, \
+ .format_args = "i2" acl_elog_trace_format_args, \
+ }; \
+ CLIB_PACKED(struct \
+ { \
+ u16 thread; \
+ typeof(acl_elog_val1) val1; \
+ }) *ed; \
+ ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e, w->elog_track); \
+ ed->thread = thread_index; \
+ ed->val1 = acl_elog_val1; \
+ } \
+} while (0)
+
+
+/* use like: elog_acl_maybe_trace_X2(am, "foobar: %d some u64: %lu", "i4i8", int32_value, int64_value); */
+
+#define elog_acl_maybe_trace_X2(am, acl_elog_trace_format_label, acl_elog_trace_format_args, \
+ acl_elog_val1, acl_elog_val2) \
+do { \
+ if (am->trace_sessions) { \
+ CLIB_UNUSED(struct { u8 available_space[18 - sizeof(acl_elog_val1) - sizeof(acl_elog_val2)]; } *static_check); \
+ u16 thread_index = os_get_thread_index (); \
+ vlib_worker_thread_t * w = vlib_worker_threads + thread_index; \
+ ELOG_TYPE_DECLARE (e) = \
+ { \
+ .format = "(%02d) " acl_elog_trace_format_label, \
+ .format_args = "i2" acl_elog_trace_format_args, \
+ }; \
+ CLIB_PACKED(struct \
+ { \
+ u16 thread; \
+ typeof(acl_elog_val1) val1; \
+ typeof(acl_elog_val2) val2; \
+ }) *ed; \
+ ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e, w->elog_track); \
+ ed->thread = thread_index; \
+ ed->val1 = acl_elog_val1; \
+ ed->val2 = acl_elog_val2; \
+ } \
+} while (0)
+
+
+/* use like: elog_acl_maybe_trace_X3(am, "foobar: %d some u64 %lu baz: %d", "i4i8i4", int32_value, u64_value, int_value); */
+
+#define elog_acl_maybe_trace_X3(am, acl_elog_trace_format_label, acl_elog_trace_format_args, acl_elog_val1, \
+ acl_elog_val2, acl_elog_val3) \
+do { \
+ if (am->trace_sessions) { \
+ CLIB_UNUSED(struct { u8 available_space[18 - sizeof(acl_elog_val1) - sizeof(acl_elog_val2) \
+ - sizeof(acl_elog_val3)]; } *static_check); \
+ u16 thread_index = os_get_thread_index (); \
+ vlib_worker_thread_t * w = vlib_worker_threads + thread_index; \
+ ELOG_TYPE_DECLARE (e) = \
+ { \
+ .format = "(%02d) " acl_elog_trace_format_label, \
+ .format_args = "i2" acl_elog_trace_format_args, \
+ }; \
+ CLIB_PACKED(struct \
+ { \
+ u16 thread; \
+ typeof(acl_elog_val1) val1; \
+ typeof(acl_elog_val2) val2; \
+ typeof(acl_elog_val3) val3; \
+ }) *ed; \
+ ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e, w->elog_track); \
+ ed->thread = thread_index; \
+ ed->val1 = acl_elog_val1; \
+ ed->val2 = acl_elog_val2; \
+ ed->val3 = acl_elog_val3; \
+ } \
+} while (0)
+
+
+/* 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); */
+
+#define elog_acl_maybe_trace_X4(am, acl_elog_trace_format_label, acl_elog_trace_format_args, acl_elog_val1, \
+ acl_elog_val2, acl_elog_val3, acl_elog_val4) \
+do { \
+ if (am->trace_sessions) { \
+ CLIB_UNUSED(struct { u8 available_space[18 - sizeof(acl_elog_val1) - sizeof(acl_elog_val2) \
+ - sizeof(acl_elog_val3) -sizeof(acl_elog_val4)]; } *static_check); \
+ u16 thread_index = os_get_thread_index (); \
+ vlib_worker_thread_t * w = vlib_worker_threads + thread_index; \
+ ELOG_TYPE_DECLARE (e) = \
+ { \
+ .format = "(%02d) " acl_elog_trace_format_label, \
+ .format_args = "i2" acl_elog_trace_format_args, \
+ }; \
+ CLIB_PACKED(struct \
+ { \
+ u16 thread; \
+ typeof(acl_elog_val1) val1; \
+ typeof(acl_elog_val2) val2; \
+ typeof(acl_elog_val3) val3; \
+ typeof(acl_elog_val4) val4; \
+ }) *ed; \
+ ed = ELOG_TRACK_DATA (&vlib_global_main.elog_main, e, w->elog_track); \
+ ed->thread = thread_index; \
+ ed->val1 = acl_elog_val1; \
+ ed->val2 = acl_elog_val2; \
+ ed->val3 = acl_elog_val3; \
+ ed->val4 = acl_elog_val4; \
+ } \
+} while (0)
+
#endif
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