MAP: Move MAP-E/T to a plugin.

Only remaining traces of MAP in the src/vnet is now in buffer.h.
Awaiting a new buffer opaque API (hint, hint).

Change-Id: Ie165561484731f1d7ed6e0f604b43624e06db3f0
Signed-off-by: Ole Troan <ot@cisco.com>

1 files changed, 0 insertions, 592 deletions

diff --git a/src/vnet/map/map.h b/src/vnet/map/map.h
deleted file mode 100644
index c304a1ea38a..00000000000
--- a/src/vnet/map/map.h
+++ /dev/null
@@ -1,592 +0,0 @@
-/*
- * 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.
- */
-#include <stdbool.h>
-#include <vppinfra/error.h>
-#include <vnet/vnet.h>
-#include <vnet/ip/ip.h>
-#include <vlib/vlib.h>
-#include <vnet/fib/fib_types.h>
-#include <vnet/fib/ip4_fib.h>
-#include <vnet/adj/adj.h>
-#include <vnet/map/map_dpo.h>
-#include <vnet/dpo/load_balance.h>
-
-#define MAP_SKIP_IP6_LOOKUP 1
-
-int map_create_domain (ip4_address_t * ip4_prefix, u8 ip4_prefix_len,
-		       ip6_address_t * ip6_prefix, u8 ip6_prefix_len,
-		       ip6_address_t * ip6_src, u8 ip6_src_len,
-		       u8 ea_bits_len, u8 psid_offset, u8 psid_length,
-		       u32 * map_domain_index, u16 mtu, u8 flags);
-int map_delete_domain (u32 map_domain_index);
-int map_add_del_psid (u32 map_domain_index, u16 psid, ip6_address_t * tep,
-		      u8 is_add);
-u8 *format_map_trace (u8 * s, va_list * args);
-
-typedef enum
-{
-  MAP_DOMAIN_PREFIX = 1 << 0,
-  MAP_DOMAIN_TRANSLATION = 1 << 1,	// The domain uses MAP-T
-  MAP_DOMAIN_RFC6052 = 1 << 2,
-} __attribute__ ((__packed__)) map_domain_flags_e;
-
-/**
- * IP4 reassembly logic:
- * One virtually reassembled flow requires a map_ip4_reass_t structure in order
- * to keep the first-fragment port number and, optionally, cache out of sequence
- * packets.
- * There are up to MAP_IP4_REASS_MAX_REASSEMBLY such structures.
- * When in use, those structures are stored in a hash table of MAP_IP4_REASS_BUCKETS buckets.
- * When a new structure needs to be used, it is allocated from available ones.
- * If there is no structure available, the oldest in use is selected and used if and
- * only if it was first allocated more than MAP_IP4_REASS_LIFETIME seconds ago.
- * In case no structure can be allocated, the fragment is dropped.
- */
-
-#define MAP_IP4_REASS_LIFETIME_DEFAULT (100)	/* ms */
-#define MAP_IP4_REASS_HT_RATIO_DEFAULT (1.0)
-#define MAP_IP4_REASS_POOL_SIZE_DEFAULT 1024	// Number of reassembly structures
-#define MAP_IP4_REASS_BUFFERS_DEFAULT 2048
-
-#define MAP_IP4_REASS_MAX_FRAGMENTS_PER_REASSEMBLY 5	// Number of fragment per reassembly
-
-#define MAP_IP6_REASS_LIFETIME_DEFAULT (100)	/* ms */
-#define MAP_IP6_REASS_HT_RATIO_DEFAULT (1.0)
-#define MAP_IP6_REASS_POOL_SIZE_DEFAULT 1024	// Number of reassembly structures
-#define MAP_IP6_REASS_BUFFERS_DEFAULT 2048
-
-#define MAP_IP6_REASS_MAX_FRAGMENTS_PER_REASSEMBLY 5
-
-#define MAP_IP6_REASS_COUNT_BYTES
-#define MAP_IP4_REASS_COUNT_BYTES
-
-//#define IP6_MAP_T_OVERRIDE_TOS 0
-
-/*
- * This structure _MUST_ be no larger than a single cache line (64 bytes).
- * If more space is needed make a union of ip6_prefix and *rules, those are mutually exclusive.
- */
-typedef struct
-{
-  /* Required for pool_get_aligned */
-  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
-  ip6_address_t ip6_src;
-  ip6_address_t ip6_prefix;
-  ip6_address_t *rules;
-  u32 suffix_mask;
-  ip4_address_t ip4_prefix;
-  u16 psid_mask;
-  u16 mtu;
-  map_domain_flags_e flags;
-  u8 ip6_prefix_len;
-  u8 ip6_src_len;
-  u8 ea_bits_len;
-  u8 psid_offset;
-  u8 psid_length;
-
-  /* helpers */
-  u8 psid_shift;
-  u8 suffix_shift;
-  u8 ea_shift;
-
-  /* not used by forwarding */
-  u8 ip4_prefix_len;
-} map_domain_t;
-
-STATIC_ASSERT ((sizeof (map_domain_t) <= CLIB_CACHE_LINE_BYTES),
-	       "MAP domain fits in one cacheline");
-
-#define MAP_REASS_INDEX_NONE ((u16)0xffff)
-
-/*
- * Hash key, padded out to 16 bytes for fast compare
- */
-/* *INDENT-OFF* */
-typedef union {
-  CLIB_PACKED (struct {
-    ip4_address_t src;
-    ip4_address_t dst;
-    u16 fragment_id;
-    u8 protocol;
-  });
-  u64 as_u64[2];
-  u32 as_u32[4];
-} map_ip4_reass_key_t;
-/* *INDENT-ON* */
-
-typedef struct
-{
-  map_ip4_reass_key_t key;
-  f64 ts;
-#ifdef MAP_IP4_REASS_COUNT_BYTES
-  u16 expected_total;
-  u16 forwarded;
-#endif
-  i32 port;
-  u16 bucket;
-  u16 bucket_next;
-  u16 fifo_prev;
-  u16 fifo_next;
-  u32 fragments[MAP_IP4_REASS_MAX_FRAGMENTS_PER_REASSEMBLY];
-} map_ip4_reass_t;
-
-/*
- * MAP domain counters
- */
-typedef enum
-{
-  /* Simple counters */
-  MAP_DOMAIN_IPV4_FRAGMENT = 0,
-  /* Combined counters */
-  MAP_DOMAIN_COUNTER_RX = 0,
-  MAP_DOMAIN_COUNTER_TX,
-  MAP_N_DOMAIN_COUNTER
-} map_domain_counter_t;
-
-/*
- * main_main_t
- */
-/* *INDENT-OFF* */
-typedef union {
-  CLIB_PACKED (struct {
-    ip6_address_t src;
-    ip6_address_t dst;
-    u32 fragment_id;
-    u8 protocol;
-  });
-  u64 as_u64[5];
-  u32 as_u32[10];
-} map_ip6_reass_key_t;
-/* *INDENT-OFF* */
-
-typedef struct {
-  u32 pi; //Cached packet or ~0
-  u16 next_data_offset; //The data offset of the additional 20 bytes or ~0
-  u8 next_data_len; //Number of bytes ready to be copied (20 if not last fragment)
-  u8 next_data[20]; //The 20 additional bytes
-} map_ip6_fragment_t;
-
-typedef struct {
-  map_ip6_reass_key_t key;
-  f64 ts;
-#ifdef MAP_IP6_REASS_COUNT_BYTES
-  u16 expected_total;
-  u16 forwarded;
-#endif
-  u16 bucket; //What hash bucket this element is linked in
-  u16 bucket_next;
-  u16 fifo_prev;
-  u16 fifo_next;
-  ip4_header_t ip4_header;
-  map_ip6_fragment_t fragments[MAP_IP6_REASS_MAX_FRAGMENTS_PER_REASSEMBLY];
-} map_ip6_reass_t;
-
-#ifdef MAP_SKIP_IP6_LOOKUP
-/**
- * A pre-resolved next-hop
- */
-typedef struct map_main_pre_resolved_t_
-{
-  /**
-   * Linkage into the FIB graph
-   */
-  fib_node_t node;
-
-  /**
-   * The FIB entry index of the next-hop
-   */
-  fib_node_index_t fei;
-
-  /**
-   * This object sibling index on the FIB entry's child dependency list
-   */
-  u32 sibling;
-
-  /**
-   * The Load-balance object index to use to forward
-   */
-  dpo_id_t dpo;
-} map_main_pre_resolved_t;
-
-/**
- * Pre-resolved next hops for v4 and v6. Why these are global and not
- * per-domain is beyond me.
- */
-extern map_main_pre_resolved_t pre_resolved[FIB_PROTOCOL_MAX];
-#endif
-
-typedef struct {
-  /* pool of MAP domains */
-  map_domain_t *domains;
-
-  /* MAP Domain packet/byte counters indexed by map domain index */
-  vlib_simple_counter_main_t *simple_domain_counters;
-  vlib_combined_counter_main_t *domain_counters;
-  volatile u32 *counter_lock;
-
-  /* Traffic class: zero, copy (~0) or fixed value */
-  u8 tc;
-  bool tc_copy;
-
-  bool sec_check;		/* Inbound security check */
-  bool sec_check_frag;		/* Inbound security check for (subsequent) fragments */
-  bool icmp6_enabled;		/* Send destination unreachable for security check failure */
-
-  bool is_ce;                   /* If this MAP node is a Customer Edge router*/
-
-  /* ICMPv6 -> ICMPv4 relay parameters */
-  ip4_address_t icmp4_src_address;
-  vlib_simple_counter_main_t icmp_relayed;
-
-  /* convenience */
-  vlib_main_t *vlib_main;
-  vnet_main_t *vnet_main;
-
-  /*
-   * IPv4 encap and decap reassembly
-   */
-  /* Configuration */
-  f32 ip4_reass_conf_ht_ratio; //Size of ht is 2^ceil(log2(ratio*pool_size))
-  u16 ip4_reass_conf_pool_size; //Max number of allocated reass structures
-  u16 ip4_reass_conf_lifetime_ms; //Time a reassembly struct is considered valid in ms
-  u32 ip4_reass_conf_buffers; //Maximum number of buffers used by ip4 reassembly
-
-  /* Runtime */
-  map_ip4_reass_t *ip4_reass_pool;
-  u8 ip4_reass_ht_log2len; //Hash table size is 2^log2len
-  u16 ip4_reass_allocated;
-  u16 *ip4_reass_hash_table;
-  u16 ip4_reass_fifo_last;
-  volatile u32 *ip4_reass_lock;
-
-  /* Counters */
-  u32 ip4_reass_buffered_counter;
-
-  bool frag_inner;		/* Inner or outer fragmentation */
-  bool frag_ignore_df;		/* Fragment (outer) packet even if DF is set */
-
-  /*
-   * IPv6 decap reassembly
-   */
-  /* Configuration */
-  f32 ip6_reass_conf_ht_ratio; //Size of ht is 2^ceil(log2(ratio*pool_size))
-  u16 ip6_reass_conf_pool_size; //Max number of allocated reass structures
-  u16 ip6_reass_conf_lifetime_ms; //Time a reassembly struct is considered valid in ms
-  u32 ip6_reass_conf_buffers; //Maximum number of buffers used by ip6 reassembly
-
-  /* Runtime */
-  map_ip6_reass_t *ip6_reass_pool;
-  u8 ip6_reass_ht_log2len; //Hash table size is 2^log2len
-  u16 ip6_reass_allocated;
-  u16 *ip6_reass_hash_table;
-  u16 ip6_reass_fifo_last;
-  volatile u32 *ip6_reass_lock;
-
-  /* Counters */
-  u32 ip6_reass_buffered_counter;
-
-} map_main_t;
-
-/*
- * MAP Error counters/messages
- */
-#define foreach_map_error				\
-  /* Must be first. */					\
- _(NONE, "valid MAP packets")				\
- _(BAD_PROTOCOL, "bad protocol")			\
- _(SEC_CHECK, "security check failed")			\
- _(ENCAP_SEC_CHECK, "encap security check failed")	\
- _(DECAP_SEC_CHECK, "decap security check failed")	\
- _(ICMP, "unable to translate ICMP")			\
- _(ICMP_RELAY, "unable to relay ICMP")			\
- _(UNKNOWN, "unknown")					\
- _(NO_BINDING, "no binding")				\
- _(NO_DOMAIN, "no domain")				\
- _(FRAGMENTED, "packet is a fragment")                  \
- _(FRAGMENT_MEMORY, "could not cache fragment")	        \
- _(FRAGMENT_MALFORMED, "fragment has unexpected format")\
- _(FRAGMENT_DROPPED, "dropped cached fragment")         \
- _(MALFORMED, "malformed packet")			\
- _(DF_SET, "can't fragment, DF set")
-
-typedef enum {
-#define _(sym,str) MAP_ERROR_##sym,
-   foreach_map_error
-#undef _
-   MAP_N_ERROR,
- } map_error_t;
-
-u64 map_error_counter_get(u32 node_index, map_error_t map_error);
-
-typedef struct {
-  u32 map_domain_index;
-  u16 port;
-} map_trace_t;
-
-extern map_main_t map_main;
-
-extern vlib_node_registration_t ip4_map_node;
-extern vlib_node_registration_t ip6_map_node;
-
-extern vlib_node_registration_t ip4_map_t_node;
-extern vlib_node_registration_t ip4_map_t_fragmented_node;
-extern vlib_node_registration_t ip4_map_t_tcp_udp_node;
-extern vlib_node_registration_t ip4_map_t_icmp_node;
-
-extern vlib_node_registration_t ip6_map_t_node;
-extern vlib_node_registration_t ip6_map_t_fragmented_node;
-extern vlib_node_registration_t ip6_map_t_tcp_udp_node;
-extern vlib_node_registration_t ip6_map_t_icmp_node;
-
-/*
- * map_get_pfx
- */
-static_always_inline u64
-map_get_pfx (map_domain_t *d, u32 addr, u16 port)
-{
-  u16 psid = (port >> d->psid_shift) & d->psid_mask;
-
-  if (d->ea_bits_len == 0 && d->rules)
-    return clib_net_to_host_u64(d->rules[psid].as_u64[0]);
-
-  u32 suffix = (addr >> d->suffix_shift) & d->suffix_mask;
-  u64 ea = d->ea_bits_len == 0 ? 0 : (((u64) suffix << d->psid_length)) | psid;
-
-  return clib_net_to_host_u64(d->ip6_prefix.as_u64[0]) | ea << d->ea_shift;
-}
-
-static_always_inline u64
-map_get_pfx_net (map_domain_t *d, u32 addr, u16 port)
-{
-  return clib_host_to_net_u64(map_get_pfx(d, clib_net_to_host_u32(addr),
-                                          clib_net_to_host_u16(port)));
-}
-
-/*
- * map_get_sfx
- */
-static_always_inline u64
-map_get_sfx (map_domain_t *d, u32 addr, u16 port)
-{
-  u16 psid = (port >> d->psid_shift) & d->psid_mask;
-
-  /* Shared 1:1 mode. */
-  if (d->ea_bits_len == 0 && d->rules)
-    return clib_net_to_host_u64(d->rules[psid].as_u64[1]);
-  if (d->ip6_prefix_len == 128)
-    return clib_net_to_host_u64(d->ip6_prefix.as_u64[1]);
-
-  if (d->flags & MAP_DOMAIN_RFC6052)
-    return (clib_net_to_host_u64(d->ip6_prefix.as_u64[1]) | addr);
-
-  /* IPv4 prefix */
-  if (d->flags & MAP_DOMAIN_PREFIX)
-    return (u64) (addr & (0xFFFFFFFF << d->suffix_shift)) << 16;
-
-  /* Shared or full IPv4 address */
-  return ((u64) addr << 16) | psid;
-}
-
-static_always_inline u64
-map_get_sfx_net (map_domain_t *d, u32 addr, u16 port)
-{
-  return clib_host_to_net_u64(map_get_sfx(d, clib_net_to_host_u32(addr),
-                                          clib_net_to_host_u16(port)));
-}
-
-static_always_inline u32
-map_get_ip4 (ip6_address_t *addr, map_domain_flags_e flags)
-{
-  if (flags & MAP_DOMAIN_RFC6052)
-    return clib_host_to_net_u32(clib_net_to_host_u64(addr->as_u64[1]));
-  else
-    return clib_host_to_net_u32(clib_net_to_host_u64(addr->as_u64[1]) >> 16);
-}
-
-/*
- * Get the MAP domain from an IPv4 lookup adjacency.
- */
-static_always_inline map_domain_t *
-ip4_map_get_domain (u32 mdi)
-{
-  map_main_t *mm = &map_main;
-
-  return pool_elt_at_index(mm->domains, mdi);
-}
-
-/*
- * Get the MAP domain from an IPv6 lookup adjacency.
- * If the IPv6 address or prefix is not shared, no lookup is required.
- * The IPv4 address is used otherwise.
- */
-static_always_inline map_domain_t *
-ip6_map_get_domain (u32 mdi,
-                    ip4_address_t *addr,
-                    u32 *map_domain_index,
-                    u8 *error)
-{
-  map_main_t *mm = &map_main;
-
-#ifdef TODO
-  /*
-   * Disable direct MAP domain lookup on decap, until the security check is updated to verify IPv4 SA.
-   * (That's done implicitly when MAP domain is looked up in the IPv4 FIB)
-   */
-  //#ifdef MAP_NONSHARED_DOMAIN_ENABLED
-  //#error "How can you be sure this domain is not shared?"
-#endif
-
-  *map_domain_index = mdi;
-  return pool_elt_at_index(mm->domains, mdi);
-
-#ifdef TODO
-  u32 lbi = ip4_fib_forwarding_lookup(0, addr);
-  const dpo_id_t *dpo = load_balance_get_bucket(lbi, 0);
-  if (PREDICT_TRUE(dpo->dpoi_type == map_dpo_type ||
-		   dpo->dpoi_type == map_t_dpo_type))
-    {
-      *map_domain_index = dpo->dpoi_index;
-      return pool_elt_at_index(mm->domains, *map_domain_index);
-    }
-  *error = MAP_ERROR_NO_DOMAIN;
-  return NULL;
-#endif
-}
-
-map_ip4_reass_t *
-map_ip4_reass_get(u32 src, u32 dst, u16 fragment_id,
-                  u8 protocol, u32 **pi_to_drop);
-void
-map_ip4_reass_free(map_ip4_reass_t *r, u32 **pi_to_drop);
-
-#define map_ip4_reass_lock() while (__sync_lock_test_and_set(map_main.ip4_reass_lock, 1)) {}
-#define map_ip4_reass_unlock() do {CLIB_MEMORY_BARRIER(); *map_main.ip4_reass_lock = 0;} while(0)
-
-static_always_inline void
-map_ip4_reass_get_fragments(map_ip4_reass_t *r, u32 **pi)
-{
-  int i;
-  for (i=0; i<MAP_IP4_REASS_MAX_FRAGMENTS_PER_REASSEMBLY; i++)
-    if(r->fragments[i] != ~0) {
-      vec_add1(*pi, r->fragments[i]);
-      r->fragments[i] = ~0;
-      map_main.ip4_reass_buffered_counter--;
-    }
-}
-
-int map_ip4_reass_add_fragment(map_ip4_reass_t *r, u32 pi);
-
-map_ip6_reass_t *
-map_ip6_reass_get(ip6_address_t *src, ip6_address_t *dst, u32 fragment_id,
-                  u8 protocol, u32 **pi_to_drop);
-void
-map_ip6_reass_free(map_ip6_reass_t *r, u32 **pi_to_drop);
-
-#define map_ip6_reass_lock() while (__sync_lock_test_and_set(map_main.ip6_reass_lock, 1)) {}
-#define map_ip6_reass_unlock() do {CLIB_MEMORY_BARRIER(); *map_main.ip6_reass_lock = 0;} while(0)
-
-int
-map_ip6_reass_add_fragment(map_ip6_reass_t *r, u32 pi,
-                           u16 data_offset, u16 next_data_offset,
-                           u8 *data_start, u16 data_len);
-
-void map_ip4_drop_pi(u32 pi);
-
-int map_ip4_reass_conf_ht_ratio(f32 ht_ratio, u32 *trashed_reass, u32 *dropped_packets);
-#define MAP_IP4_REASS_CONF_HT_RATIO_MAX 100
-int map_ip4_reass_conf_pool_size(u16 pool_size, u32 *trashed_reass, u32 *dropped_packets);
-#define MAP_IP4_REASS_CONF_POOL_SIZE_MAX (0xfeff)
-int map_ip4_reass_conf_lifetime(u16 lifetime_ms);
-#define MAP_IP4_REASS_CONF_LIFETIME_MAX 0xffff
-int map_ip4_reass_conf_buffers(u32 buffers);
-#define MAP_IP4_REASS_CONF_BUFFERS_MAX (0xffffffff)
-
-void map_ip6_drop_pi(u32 pi);
-
-
-int map_ip6_reass_conf_ht_ratio(f32 ht_ratio, u32 *trashed_reass, u32 *dropped_packets);
-#define MAP_IP6_REASS_CONF_HT_RATIO_MAX 100
-int map_ip6_reass_conf_pool_size(u16 pool_size, u32 *trashed_reass, u32 *dropped_packets);
-#define MAP_IP6_REASS_CONF_POOL_SIZE_MAX (0xfeff)
-int map_ip6_reass_conf_lifetime(u16 lifetime_ms);
-#define MAP_IP6_REASS_CONF_LIFETIME_MAX 0xffff
-int map_ip6_reass_conf_buffers(u32 buffers);
-#define MAP_IP6_REASS_CONF_BUFFERS_MAX (0xffffffff)
-
-static_always_inline void
-ip4_map_t_embedded_address (map_domain_t *d,
-                                ip6_address_t *ip6, const ip4_address_t *ip4)
-{
-  ASSERT(d->ip6_src_len == 96); //No support for other lengths for now
-  ip6->as_u64[0] = d->ip6_src.as_u64[0];
-  ip6->as_u32[2] = d->ip6_src.as_u32[2];
-  ip6->as_u32[3] = ip4->as_u32;
-}
-
-static_always_inline u32
-ip6_map_t_embedded_address (map_domain_t *d, ip6_address_t *addr)
-{
-  ASSERT(d->ip6_src_len == 96); //No support for other lengths for now
-  return addr->as_u32[3];
-}
-
-static inline void
-map_domain_counter_lock (map_main_t *mm)
-{
-  if (mm->counter_lock)
-    while (__sync_lock_test_and_set(mm->counter_lock, 1))
-      /* zzzz */ ;
-}
-static inline void
-map_domain_counter_unlock (map_main_t *mm)
-{
-  if (mm->counter_lock)
-    *mm->counter_lock = 0;
-}
-
-
-static_always_inline void
-map_send_all_to_node(vlib_main_t *vm, u32 *pi_vector,
-                     vlib_node_runtime_t *node, vlib_error_t *error,
-                     u32 next)
-{
-  u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
-  //Deal with fragments that are ready
-  from = pi_vector;
-  n_left_from = vec_len(pi_vector);
-  next_index = node->cached_next_index;
-  while (n_left_from > 0) {
-    vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
-    while (n_left_from > 0 && n_left_to_next > 0) {
-      u32 pi0 = to_next[0] = from[0];
-      from += 1;
-      n_left_from -= 1;
-      to_next += 1;
-      n_left_to_next -= 1;
-      vlib_buffer_t *p0 = vlib_get_buffer(vm, pi0);
-      p0->error = *error;
-      vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, pi0, next);
-    }
-    vlib_put_next_frame(vm, node, next_index, n_left_to_next);
-  }
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */