Reorganize source tree to use single autotools instance

Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 523 insertions, 0 deletions

diff --git a/src/vnet/classify/vnet_classify.h b/src/vnet/classify/vnet_classify.h
new file mode 100644
index 00000000000..d0b896ed7d2
--- /dev/null
+++ b/src/vnet/classify/vnet_classify.h
@@ -0,0 +1,523 @@
+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef __included_vnet_classify_h__
+#define __included_vnet_classify_h__
+
+#include <stdarg.h>
+
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vnet/pg/pg.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/ethernet/packet.h>
+#include <vnet/ip/ip_packet.h>
+#include <vnet/ip/ip4_packet.h>
+#include <vnet/ip/ip6_packet.h>
+#include <vlib/cli.h>
+#include <vnet/l2/l2_input.h>
+#include <vnet/l2/feat_bitmap.h>
+#include <vnet/api_errno.h>     /* for API error numbers */
+
+#include <vppinfra/error.h>
+#include <vppinfra/hash.h>
+#include <vppinfra/cache.h>
+#include <vppinfra/xxhash.h>
+
+extern vlib_node_registration_t ip4_classify_node;
+extern vlib_node_registration_t ip6_classify_node;
+
+#define CLASSIFY_TRACE 0
+
+#if !defined( __aarch64__) && !defined(__arm__)
+#define CLASSIFY_USE_SSE //Allow usage of SSE operations
+#endif
+
+#define U32X4_ALIGNED(p) PREDICT_TRUE((((intptr_t)p) & 0xf) == 0)
+
+/*
+ * Classify table option to process packets
+ *  CLASSIFY_FLAG_USE_CURR_DATA:
+ *   - classify packets starting from VPP node’s current data pointer
+ */
+#define CLASSIFY_FLAG_USE_CURR_DATA              1
+
+/*
+ * Classify session action
+ *  CLASSIFY_ACTION_SET_IP4_FIB_INDEX:
+ *   - Classified IP packets will be looked up
+ *     from the specified ipv4 fib table
+ *  CLASSIFY_ACTION_SET_IP6_FIB_INDEX:
+ *   - Classified IP packets will be looked up
+ *     from the specified ipv6 fib table
+ */
+#define CLASSIFY_ACTION_SET_IP4_FIB_INDEX       1
+#define CLASSIFY_ACTION_SET_IP6_FIB_INDEX       2
+
+struct _vnet_classify_main;
+typedef struct _vnet_classify_main vnet_classify_main_t;
+
+#define foreach_size_in_u32x4                   \
+_(1)                                            \
+_(2)                                            \
+_(3)                                            \
+_(4)                                            \
+_(5)
+
+typedef CLIB_PACKED(struct _vnet_classify_entry {
+  /* Graph node next index */
+  u32 next_index;
+
+  /* put into vnet_buffer(b)->l2_classfy.opaque_index */
+  union {
+    struct {
+      u32 opaque_index;
+      /* advance on hit, note it's a signed quantity... */
+      i32 advance;
+    };
+    u64 opaque_count;
+  };
+
+  /* Really only need 1 bit */
+  u8 flags;
+#define VNET_CLASSIFY_ENTRY_FREE	(1<<0)
+
+  u8 action;
+  u16 metadata;
+
+  /* Hit counter, last heard time */
+  union {
+    u64 hits;
+    struct _vnet_classify_entry * next_free;
+  };
+    
+  f64 last_heard;
+
+  /* Must be aligned to a 16-octet boundary */
+  u32x4 key[0];
+}) vnet_classify_entry_t;
+
+static inline int vnet_classify_entry_is_free (vnet_classify_entry_t * e)
+{
+  return e->flags & VNET_CLASSIFY_ENTRY_FREE;
+}
+
+static inline int vnet_classify_entry_is_busy (vnet_classify_entry_t * e)
+{
+  return ((e->flags & VNET_CLASSIFY_ENTRY_FREE) == 0);
+}
+
+/* Need these to con the vector allocator */
+#define _(size)                                 \
+typedef CLIB_PACKED(struct {                    \
+  u32 pad0[4];                                  \
+  u64 pad1[2];                                  \
+  u32x4 key[size];                              \
+}) vnet_classify_entry_##size##_t;
+foreach_size_in_u32x4;
+#undef _
+
+typedef struct {
+  union {
+    struct {
+      u32 offset;
+      u8 pad[3];
+      u8 log2_pages;
+    };
+    u64 as_u64;
+  };
+} vnet_classify_bucket_t;
+
+typedef struct {
+  /* Mask to apply after skipping N vectors */
+  u32x4 *mask;
+  /* Buckets and entries */
+  vnet_classify_bucket_t * buckets;
+  vnet_classify_entry_t * entries;
+  
+  /* Config parameters */
+  u32 match_n_vectors;
+  u32 skip_n_vectors;
+  u32 nbuckets;
+  u32 log2_nbuckets;
+  int entries_per_page;
+  u32 active_elements;
+  u32 current_data_flag;
+  int current_data_offset;
+  u32 data_offset;
+  /* Index of next table to try */
+  u32 next_table_index;
+  
+  /* Miss next index, return if next_table_index = 0 */
+  u32 miss_next_index;
+  
+  /* Per-bucket working copies, one per thread */
+  vnet_classify_entry_t ** working_copies;
+  vnet_classify_bucket_t saved_bucket;
+  
+  /* Free entry freelists */
+  vnet_classify_entry_t **freelists;
+
+  u8 * name;
+  
+  /* Private allocation arena, protected by the writer lock */
+  void * mheap;
+  
+  /* Writer (only) lock for this table */
+  volatile u32 * writer_lock;
+  
+} vnet_classify_table_t;
+
+struct _vnet_classify_main {
+  /* Table pool */
+  vnet_classify_table_t * tables;
+  
+  /* Registered next-index, opaque unformat fcns */
+  unformat_function_t ** unformat_l2_next_index_fns;
+  unformat_function_t ** unformat_ip_next_index_fns;
+  unformat_function_t ** unformat_acl_next_index_fns;
+  unformat_function_t ** unformat_policer_next_index_fns;
+  unformat_function_t ** unformat_opaque_index_fns;
+
+  /* convenience variables */
+  vlib_main_t * vlib_main;
+  vnet_main_t * vnet_main;
+};
+
+extern vnet_classify_main_t vnet_classify_main;
+
+u8 * format_classify_table (u8 * s, va_list * args);
+
+u64 vnet_classify_hash_packet (vnet_classify_table_t * t, u8 * h);
+
+static inline u64 
+vnet_classify_hash_packet_inline (vnet_classify_table_t * t, 
+                                  u8 * h)
+{
+  u32x4 *mask;
+
+  union {
+    u32x4 as_u32x4;
+    u64 as_u64[2];
+  } xor_sum __attribute__((aligned(sizeof(u32x4))));
+
+  ASSERT(t);
+  mask = t->mask;
+#ifdef CLASSIFY_USE_SSE
+  if (U32X4_ALIGNED(h)) {  //SSE can't handle unaligned data
+    u32x4 *data = (u32x4 *)h;
+    xor_sum.as_u32x4  = data[0 + t->skip_n_vectors] & mask[0];
+    switch (t->match_n_vectors)
+    {
+      case 5:
+        xor_sum.as_u32x4 ^= data[4 + t->skip_n_vectors] & mask[4];
+        /* FALLTHROUGH */
+      case 4:
+        xor_sum.as_u32x4 ^= data[3 + t->skip_n_vectors] & mask[3];
+        /* FALLTHROUGH */
+      case 3:
+        xor_sum.as_u32x4 ^= data[2 + t->skip_n_vectors] & mask[2];
+        /* FALLTHROUGH */
+      case 2:
+        xor_sum.as_u32x4 ^= data[1 + t->skip_n_vectors] & mask[1];
+        /* FALLTHROUGH */
+      case 1:
+        break;
+      default:
+        abort();
+    }
+  } else
+#endif /* CLASSIFY_USE_SSE */
+  {
+    u32 skip_u64 = t->skip_n_vectors * 2;
+    u64 *data64 = (u64 *)h;
+    xor_sum.as_u64[0] = data64[0 + skip_u64] & ((u64 *)mask)[0];
+    xor_sum.as_u64[1] = data64[1 + skip_u64] & ((u64 *)mask)[1];
+    switch (t->match_n_vectors)
+    {
+      case 5:
+        xor_sum.as_u64[0]  ^= data64[8 + skip_u64] & ((u64 *)mask)[8];
+        xor_sum.as_u64[1]  ^= data64[9 + skip_u64] & ((u64 *)mask)[9];
+        /* FALLTHROUGH */
+      case 4:
+        xor_sum.as_u64[0]  ^= data64[6 + skip_u64] & ((u64 *)mask)[6];
+        xor_sum.as_u64[1]  ^= data64[7 + skip_u64] & ((u64 *)mask)[7];
+        /* FALLTHROUGH */
+      case 3:
+        xor_sum.as_u64[0]  ^= data64[4 + skip_u64] & ((u64 *)mask)[4];
+        xor_sum.as_u64[1]  ^= data64[5 + skip_u64] & ((u64 *)mask)[5];
+        /* FALLTHROUGH */
+      case 2:
+        xor_sum.as_u64[0]  ^= data64[2 + skip_u64] & ((u64 *)mask)[2];
+        xor_sum.as_u64[1]  ^= data64[3 + skip_u64] & ((u64 *)mask)[3];
+        /* FALLTHROUGH */
+      case 1:
+        break;
+
+      default:
+        abort();
+    }
+  }
+  
+  return clib_xxhash (xor_sum.as_u64[0] ^ xor_sum.as_u64[1]);
+}
+
+static inline void 
+vnet_classify_prefetch_bucket (vnet_classify_table_t * t, u64 hash)
+{
+  u32 bucket_index;
+  
+  ASSERT (is_pow2(t->nbuckets));
+  
+  bucket_index = hash & (t->nbuckets - 1);
+  
+  CLIB_PREFETCH(&t->buckets[bucket_index], CLIB_CACHE_LINE_BYTES, LOAD);
+}
+
+static inline vnet_classify_entry_t * 
+vnet_classify_get_entry (vnet_classify_table_t * t, uword offset)
+{
+  u8 * hp = t->mheap;
+  u8 * vp = hp + offset;
+  
+  return (void *) vp;
+}
+
+static inline uword vnet_classify_get_offset (vnet_classify_table_t * t, 
+                                              vnet_classify_entry_t * v)
+{
+  u8 * hp, * vp;
+
+  hp = (u8 *) t->mheap;
+  vp = (u8 *) v;
+
+  ASSERT((vp - hp) < 0x100000000ULL);
+  return vp - hp;
+}
+
+static inline vnet_classify_entry_t *
+vnet_classify_entry_at_index (vnet_classify_table_t * t, 
+                              vnet_classify_entry_t * e,
+                              u32 index)
+{
+  u8 * eu8;
+
+  eu8 = (u8 *)e;
+
+  eu8 += index * (sizeof (vnet_classify_entry_t) +
+                  (t->match_n_vectors * sizeof (u32x4)));
+
+  return (vnet_classify_entry_t *) eu8;
+}
+
+static inline void
+vnet_classify_prefetch_entry (vnet_classify_table_t * t, 
+                              u64 hash)
+{
+  u32 bucket_index;
+  u32 value_index;
+  vnet_classify_bucket_t * b;
+  vnet_classify_entry_t * e;
+
+  bucket_index = hash & (t->nbuckets - 1);
+
+  b = &t->buckets[bucket_index];
+  
+  if (b->offset == 0)
+    return;
+
+  hash >>= t->log2_nbuckets;
+
+  e = vnet_classify_get_entry (t, b->offset);
+  value_index = hash & ((1<<b->log2_pages)-1);
+
+  e = vnet_classify_entry_at_index (t, e, value_index);
+
+  CLIB_PREFETCH(e, CLIB_CACHE_LINE_BYTES, LOAD);
+}
+
+vnet_classify_entry_t *
+vnet_classify_find_entry (vnet_classify_table_t * t,
+                          u8 * h, u64 hash, f64 now);
+
+static inline vnet_classify_entry_t *
+vnet_classify_find_entry_inline (vnet_classify_table_t * t,
+                                 u8 * h, u64 hash, f64 now)
+  {
+  vnet_classify_entry_t * v;
+  u32x4 *mask, *key;
+  union {
+    u32x4 as_u32x4;
+    u64 as_u64[2];
+  } result __attribute__((aligned(sizeof(u32x4))));
+  vnet_classify_bucket_t * b;
+  u32 value_index;
+  u32 bucket_index;
+  int i;
+
+  bucket_index = hash & (t->nbuckets-1);
+  b = &t->buckets[bucket_index];
+  mask = t->mask;
+
+  if (b->offset == 0)
+    return 0;
+
+  hash >>= t->log2_nbuckets;
+
+  v = vnet_classify_get_entry (t, b->offset);
+  value_index = hash & ((1<<b->log2_pages)-1);
+  v = vnet_classify_entry_at_index (t, v, value_index);
+
+#ifdef CLASSIFY_USE_SSE
+  if (U32X4_ALIGNED(h)) {
+    u32x4 *data = (u32x4 *) h;
+    for (i = 0; i < t->entries_per_page; i++) {
+      key = v->key;
+      result.as_u32x4 = (data[0 + t->skip_n_vectors] & mask[0]) ^ key[0];
+      switch (t->match_n_vectors)
+      {
+        case 5:
+          result.as_u32x4 |= (data[4 + t->skip_n_vectors] & mask[4]) ^ key[4];
+          /* FALLTHROUGH */
+        case 4:
+          result.as_u32x4 |= (data[3 + t->skip_n_vectors] & mask[3]) ^ key[3];
+          /* FALLTHROUGH */
+        case 3:
+          result.as_u32x4 |= (data[2 + t->skip_n_vectors] & mask[2]) ^ key[2];
+          /* FALLTHROUGH */
+        case 2:
+          result.as_u32x4 |= (data[1 + t->skip_n_vectors] & mask[1]) ^ key[1];
+          /* FALLTHROUGH */
+        case 1:
+          break;
+        default:
+          abort();
+      }
+
+      if (u32x4_zero_byte_mask (result.as_u32x4) == 0xffff) {
+        if (PREDICT_TRUE(now)) {
+          v->hits++;
+          v->last_heard = now;
+        }
+        return (v);
+      }
+      v = vnet_classify_entry_at_index (t, v, 1);
+    }
+  } else
+#endif /* CLASSIFY_USE_SSE */
+  {
+    u32 skip_u64 = t->skip_n_vectors * 2;
+    u64 *data64 = (u64 *)h;
+    for (i = 0; i < t->entries_per_page; i++) {
+      key = v->key;
+
+      result.as_u64[0] = (data64[0 + skip_u64] & ((u64 *)mask)[0]) ^ ((u64 *)key)[0];
+      result.as_u64[1] = (data64[1 + skip_u64] & ((u64 *)mask)[1]) ^ ((u64 *)key)[1];
+      switch (t->match_n_vectors)
+      {
+        case 5:
+          result.as_u64[0] |= (data64[8 + skip_u64] & ((u64 *)mask)[8]) ^ ((u64 *)key)[8];
+          result.as_u64[1] |= (data64[9 + skip_u64] & ((u64 *)mask)[9]) ^ ((u64 *)key)[9];
+          /* FALLTHROUGH */
+        case 4:
+          result.as_u64[0] |= (data64[6 + skip_u64] & ((u64 *)mask)[6]) ^ ((u64 *)key)[6];
+          result.as_u64[1] |= (data64[7 + skip_u64] & ((u64 *)mask)[7]) ^ ((u64 *)key)[7];
+          /* FALLTHROUGH */
+        case 3:
+          result.as_u64[0] |= (data64[4 + skip_u64] & ((u64 *)mask)[4]) ^ ((u64 *)key)[4];
+          result.as_u64[1] |= (data64[5 + skip_u64] & ((u64 *)mask)[5]) ^ ((u64 *)key)[5];
+          /* FALLTHROUGH */
+        case 2:
+          result.as_u64[0] |= (data64[2 + skip_u64] & ((u64 *)mask)[2]) ^ ((u64 *)key)[2];
+          result.as_u64[1] |= (data64[3 + skip_u64] & ((u64 *)mask)[3]) ^ ((u64 *)key)[3];
+          /* FALLTHROUGH */
+        case 1:
+          break;
+        default:
+          abort();
+      }
+
+      if (result.as_u64[0] == 0 && result.as_u64[1] == 0) {
+        if (PREDICT_TRUE(now)) {
+          v->hits++;
+          v->last_heard = now;
+        }
+        return (v);
+      }
+
+      v = vnet_classify_entry_at_index (t, v, 1);
+    }
+  }
+  return 0;
+  }
+
+vnet_classify_table_t * 
+vnet_classify_new_table (vnet_classify_main_t *cm,
+                         u8 * mask, u32 nbuckets, u32 memory_size,
+                         u32 skip_n_vectors,
+                         u32 match_n_vectors);
+
+int vnet_classify_add_del_session (vnet_classify_main_t * cm, 
+                                   u32 table_index, 
+                                   u8 * match, 
+                                   u32 hit_next_index,
+                                   u32 opaque_index, 
+                                   i32 advance,
+                                   u8 action,
+                                   u32 metadata,
+                                   int is_add);
+
+int vnet_classify_add_del_table (vnet_classify_main_t * cm,
+                                 u8 * mask, 
+                                 u32 nbuckets,
+                                 u32 memory_size,
+                                 u32 skip,
+                                 u32 match,
+                                 u32 next_table_index,
+                                 u32 miss_next_index,
+                                 u32 * table_index,
+                                 u8 current_data_flag,
+                                 i16 current_data_offset,
+                                 int is_add,
+				 int del_chain);
+
+unformat_function_t unformat_ip4_mask;
+unformat_function_t unformat_ip6_mask;
+unformat_function_t unformat_l3_mask;
+unformat_function_t unformat_l2_mask;
+unformat_function_t unformat_classify_mask;
+unformat_function_t unformat_l2_next_index;
+unformat_function_t unformat_ip_next_index;
+unformat_function_t unformat_ip4_match;
+unformat_function_t unformat_ip6_match;
+unformat_function_t unformat_l3_match;
+unformat_function_t unformat_vlan_tag;
+unformat_function_t unformat_l2_match;
+unformat_function_t unformat_classify_match;
+
+void vnet_classify_register_unformat_ip_next_index_fn 
+(unformat_function_t * fn);
+
+void vnet_classify_register_unformat_l2_next_index_fn 
+(unformat_function_t * fn);
+
+void vnet_classify_register_unformat_acl_next_index_fn 
+(unformat_function_t * fn);
+
+void  vnet_classify_register_unformat_policer_next_index_fn
+(unformat_function_t * fn);
+
+void vnet_classify_register_unformat_opaque_index_fn (unformat_function_t * fn);
+
+#endif /* __included_vnet_classify_h__ */