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authorMatus Fabian <matfabia@cisco.com>2018-01-04 04:03:14 -0800
committerMatus Fabian <matfabia@cisco.com>2018-01-08 01:51:24 -0800
commita431ad1c486ad0fd9ca35e14c527fe7611965fc2 (patch)
tree38326f15ef87cba103db422bf7744a33fd8413b1 /src/plugins/nat/nat64_db.c
parent1049139a6d323e07bfb87710c9d2f1d467e980a9 (diff)
NAT64: IPFix (VPP-1106)
Change-Id: Ib90dc5613c9fdac0344b3bd7f163e2f7163c64d8 Signed-off-by: Matus Fabian <matfabia@cisco.com>
Diffstat (limited to 'src/plugins/nat/nat64_db.c')
-rw-r--r--src/plugins/nat/nat64_db.c63
1 files changed, 62 insertions, 1 deletions
diff --git a/src/plugins/nat/nat64_db.c b/src/plugins/nat/nat64_db.c
index 7ce28bc6c7f..3edc1a43006 100644
--- a/src/plugins/nat/nat64_db.c
+++ b/src/plugins/nat/nat64_db.c
@@ -17,6 +17,8 @@
* @brief NAT64 DB
*/
#include <nat/nat64_db.h>
+#include <nat/nat_ipfix_logging.h>
+#include <vnet/fib/fib_table.h>
int
nat64_db_init (nat64_db_t * db, u32 bib_buckets, u32 bib_memory_size,
@@ -36,6 +38,12 @@ nat64_db_init (nat64_db_t * db, u32 bib_buckets, u32 bib_memory_size,
st_memory_size);
db->free_addr_port_cb = free_addr_port_cb;
+ db->bib.limit = 10 * bib_buckets;
+ db->bib.bib_entries_num = 0;
+ db->st.limit = 10 * st_buckets;
+ db->st.st_entries_num = 0;
+ db->addr_free = 0;
+
return 0;
}
@@ -48,6 +56,14 @@ nat64_db_bib_entry_create (nat64_db_t * db, ip6_address_t * in_addr,
nat64_db_bib_entry_t *bibe;
nat64_db_bib_entry_key_t bibe_key;
clib_bihash_kv_24_8_t kv;
+ fib_table_t *fib;
+
+ if (db->bib.bib_entries_num >= db->bib.limit)
+ {
+ db->free_addr_port_cb (db, out_addr, out_port, proto);
+ nat_ipfix_logging_max_bibs (db->bib.limit);
+ return 0;
+ }
/* create pool entry */
switch (ip_proto_to_snat_proto (proto))
@@ -66,6 +82,9 @@ nat64_db_bib_entry_create (nat64_db_t * db, ip6_address_t * in_addr,
kv.value = bibe - db->bib._unk_proto_bib;
break;
}
+
+ db->bib.bib_entries_num++;
+
memset (bibe, 0, sizeof (*bibe));
bibe->in_addr.as_u64[0] = in_addr->as_u64[0];
bibe->in_addr.as_u64[1] = in_addr->as_u64[1];
@@ -97,6 +116,9 @@ nat64_db_bib_entry_create (nat64_db_t * db, ip6_address_t * in_addr,
kv.key[2] = bibe_key.as_u64[2];
clib_bihash_add_del_24_8 (&db->bib.out2in, &kv, 1);
+ fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
+ nat_ipfix_logging_nat64_bib (in_addr, out_addr, proto, in_port, out_port,
+ fib->ft_table_id, 1);
return bibe;
}
@@ -108,6 +130,7 @@ nat64_db_bib_entry_free (nat64_db_t * db, nat64_db_bib_entry_t * bibe)
nat64_db_bib_entry_t *bib;
u32 *ste_to_be_free = 0, *ste_index, bibe_index;
nat64_db_st_entry_t *st, *ste;
+ fib_table_t *fib;
switch (ip_proto_to_snat_proto (bibe->proto))
{
@@ -126,6 +149,8 @@ nat64_db_bib_entry_free (nat64_db_t * db, nat64_db_bib_entry_t * bibe)
break;
}
+ db->bib.bib_entries_num--;
+
bibe_index = bibe - bib;
/* delete ST entries for static BIB entry */
@@ -162,7 +187,14 @@ nat64_db_bib_entry_free (nat64_db_t * db, nat64_db_bib_entry_t * bibe)
kv.key[2] = bibe_key.as_u64[2];
clib_bihash_add_del_24_8 (&db->bib.out2in, &kv, 0);
- db->free_addr_port_cb (db, &bibe->out_addr, bibe->out_port, bibe->proto);
+ if (!db->addr_free)
+ db->free_addr_port_cb (db, &bibe->out_addr, bibe->out_port, bibe->proto);
+
+ fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
+ nat_ipfix_logging_nat64_bib (&bibe->in_addr, &bibe->out_addr, bibe->proto,
+ bibe->in_port, bibe->out_port,
+ fib->ft_table_id, 0);
+
/* delete from pool */
pool_put (bib, bibe);
@@ -344,6 +376,13 @@ nat64_db_st_entry_create (nat64_db_t * db, nat64_db_bib_entry_t * bibe,
nat64_db_bib_entry_t *bib;
nat64_db_st_entry_key_t ste_key;
clib_bihash_kv_48_8_t kv;
+ fib_table_t *fib;
+
+ if (db->st.st_entries_num >= db->st.limit)
+ {
+ nat_ipfix_logging_max_sessions (db->st.limit);
+ return 0;
+ }
/* create pool entry */
switch (ip_proto_to_snat_proto (bibe->proto))
@@ -364,6 +403,9 @@ nat64_db_st_entry_create (nat64_db_t * db, nat64_db_bib_entry_t * bibe,
bib = db->bib._unk_proto_bib;
break;
}
+
+ db->st.st_entries_num++;
+
memset (ste, 0, sizeof (*ste));
ste->in_r_addr.as_u64[0] = in_r_addr->as_u64[0];
ste->in_r_addr.as_u64[1] = in_r_addr->as_u64[1];
@@ -407,6 +449,13 @@ nat64_db_st_entry_create (nat64_db_t * db, nat64_db_bib_entry_t * bibe,
kv.key[5] = ste_key.as_u64[5];
clib_bihash_add_del_48_8 (&db->st.out2in, &kv, 1);
+ fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
+ nat_ipfix_logging_nat64_session (&bibe->in_addr, &bibe->out_addr,
+ bibe->proto, bibe->in_port, bibe->out_port,
+ &ste->in_r_addr, &ste->out_r_addr,
+ ste->r_port, ste->r_port, fib->ft_table_id,
+ 1);
+
return ste;
}
@@ -417,6 +466,7 @@ nat64_db_st_entry_free (nat64_db_t * db, nat64_db_st_entry_t * ste)
nat64_db_bib_entry_t *bib, *bibe;
nat64_db_st_entry_key_t ste_key;
clib_bihash_kv_48_8_t kv;
+ fib_table_t *fib;
switch (ip_proto_to_snat_proto (ste->proto))
{
@@ -437,6 +487,8 @@ nat64_db_st_entry_free (nat64_db_t * db, nat64_db_st_entry_t * ste)
bibe = pool_elt_at_index (bib, ste->bibe_index);
+ db->st.st_entries_num--;
+
/* delete hash lookup */
memset (&ste_key, 0, sizeof (ste_key));
ste_key.l_addr.as_u64[0] = bibe->in_addr.as_u64[0];
@@ -469,6 +521,13 @@ nat64_db_st_entry_free (nat64_db_t * db, nat64_db_st_entry_t * ste)
kv.key[5] = ste_key.as_u64[5];
clib_bihash_add_del_48_8 (&db->st.out2in, &kv, 0);
+ fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
+ nat_ipfix_logging_nat64_session (&bibe->in_addr, &bibe->out_addr,
+ bibe->proto, bibe->in_port, bibe->out_port,
+ &ste->in_r_addr, &ste->out_r_addr,
+ ste->r_port, ste->r_port, fib->ft_table_id,
+ 0);
+
/* delete from pool */
pool_put (st, ste);
@@ -613,6 +672,7 @@ nat64_db_free_out_addr (nat64_db_t * db, ip4_address_t * out_addr)
nat64_db_st_entry_t *st, *ste;
nat64_db_bib_entry_t *bibe;
+ db->addr_free = 1;
/* *INDENT-OFF* */
#define _(N, i, n, s) \
st = db->st._##n##_st; \
@@ -636,6 +696,7 @@ nat64_db_free_out_addr (nat64_db_t * db, ip4_address_t * out_addr)
vec_foreach (ste_index, ste_to_be_free)
nat64_db_st_entry_free (db, pool_elt_at_index(st, ste_index[0]));
vec_free (ste_to_be_free);
+ db->addr_free = 0;
/* *INDENT-ON* */
}