diff options
| author |   Matus Fabian <matfabia@cisco.com> | 2017-06-15 02:28:50 -0700 |
|---|---|---|
| committer |   Ole Trøan <otroan@employees.org> | 2017-06-19 11:08:47 +0000 |
| commit | 029f3d2c1c6b04a6cfef17242cb36b304025fe23 (patch) | |
| tree | 5036e25543b5d43deeb15fde31135a3531d864ce /src/plugins/snat/nat64.c | |
| parent | acd4c63e3c6e70ea3f58527d9bace7c0e38df719 (diff) | |
NAT64: Hairpinning (VPP-699)
Change-Id: I83a6c277fa211ac2c2ca2d603650c992886af0a7
Signed-off-by: Matus Fabian <matfabia@cisco.com>
Diffstat (limited to 'src/plugins/snat/nat64.c')
| -rw-r--r-- | src/plugins/snat/nat64.c | 73 |
1 files changed, 56 insertions, 17 deletions
diff --git a/src/plugins/snat/nat64.c b/src/plugins/snat/nat64.c index ef745473793..1e8b75967d8 100644 --- a/src/plugins/snat/nat64.c +++ b/src/plugins/snat/nat64.c @@ -95,7 +95,10 @@ nat64_add_del_pool_addr (ip4_address_t * addr, u32 vrf_id, u8 is_add) vec_add2 (nm->addr_pool, a, 1); a->addr = *addr; - a->fib_index = ip4_fib_index_from_table_id (vrf_id); + a->fib_index = 0; + if (vrf_id != ~0) + a->fib_index = + fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, vrf_id); #define _(N, i, n, s) \ clib_bitmap_alloc (a->busy_##n##_port_bitmap, 65535); foreach_snat_protocol @@ -218,7 +221,7 @@ nat64_alloc_out_addr_and_port (u32 fib_index, snat_protocol_t proto, nat64_main_t *nm = &nat64_main; snat_main_t *sm = &snat_main; int i; - snat_address_t *a; + snat_address_t *a, *ga = 0; u32 portnum; for (i = 0; i < vec_len (nm->addr_pool); i++) @@ -230,22 +233,27 @@ nat64_alloc_out_addr_and_port (u32 fib_index, snat_protocol_t proto, case SNAT_PROTOCOL_##N: \ if (a->busy_##n##_ports < (65535-1024)) \ { \ - while (1) \ + if (a->fib_index == fib_index) \ { \ - portnum = random_u32 (&sm->random_seed); \ - portnum &= 0xFFFF; \ - if (portnum < 1024) \ - continue; \ - if (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, \ - portnum)) \ - continue; \ - clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, \ - portnum, 1); \ - a->busy_##n##_ports++; \ - *port = portnum; \ - addr->as_u32 = a->addr.as_u32; \ - return 0; \ - } \ + while (1) \ + { \ + portnum = random_u32 (&sm->random_seed); \ + portnum &= 0xFFFF; \ + if (portnum < 1024) \ + continue; \ + if (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, \ + portnum)) \ + continue; \ + clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, \ + portnum, 1); \ + a->busy_##n##_ports++; \ + *port = portnum; \ + addr->as_u32 = a->addr.as_u32; \ + return 0; \ + } \ + } \ + else if (a->fib_index == 0) \ + ga = a; \ } \ break; foreach_snat_protocol @@ -254,8 +262,39 @@ nat64_alloc_out_addr_and_port (u32 fib_index, snat_protocol_t proto, clib_warning ("unknown protocol"); return 1; } + } + if (ga) + { + switch (proto) + { +#define _(N, j, n, s) \ + case SNAT_PROTOCOL_##N: \ + while (1) \ + { \ + portnum = random_u32 (&sm->random_seed); \ + portnum &= 0xFFFF; \ + if (portnum < 1024) \ + continue; \ + if (clib_bitmap_get_no_check (a->busy_##n##_port_bitmap, \ + portnum)) \ + continue; \ + clib_bitmap_set_no_check (a->busy_##n##_port_bitmap, \ + portnum, 1); \ + a->busy_##n##_ports++; \ + *port = portnum; \ + addr->as_u32 = a->addr.as_u32; \ + return 0; \ + } + break; + foreach_snat_protocol +#undef _ + default: + clib_warning ("unknown protocol"); + return 1; + } } + /* Totally out of translations to use... */ //TODO: IPFix return 1; |