diff options
Diffstat (limited to 'extras/deprecated/plugins/gbp/gbp_vxlan.c')
| -rw-r--r-- | extras/deprecated/plugins/gbp/gbp_vxlan.c | 654 |
1 files changed, 654 insertions, 0 deletions
diff --git a/extras/deprecated/plugins/gbp/gbp_vxlan.c b/extras/deprecated/plugins/gbp/gbp_vxlan.c new file mode 100644 index 00000000000..77e4d7ac11b --- /dev/null +++ b/extras/deprecated/plugins/gbp/gbp_vxlan.c @@ -0,0 +1,654 @@ +/* + * Copyright (c) 2018 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 <plugins/gbp/gbp_vxlan.h> +#include <plugins/gbp/gbp_learn.h> +#include <plugins/gbp/gbp_bridge_domain.h> +#include <plugins/gbp/gbp_route_domain.h> + +#include <vnet/vxlan-gbp/vxlan_gbp.h> +#include <vlibmemory/api.h> +#include <vnet/fib/fib_table.h> +#include <vlib/punt.h> + +/** + * A reference to a VXLAN-GBP tunnel created as a child/dependent tunnel + * of the template GBP-VXLAN tunnel + */ +typedef struct vxlan_tunnel_ref_t_ +{ + gbp_itf_hdl_t vxr_itf; + u32 vxr_sw_if_index; + index_t vxr_parent; + gbp_vxlan_tunnel_layer_t vxr_layer; +} vxlan_tunnel_ref_t; + +/** + * DB of added tunnels + */ +uword *gv_db; + +/** + * Logger + */ +static vlib_log_class_t gt_logger; + +/** + * Pool of template tunnels + */ +static gbp_vxlan_tunnel_t *gbp_vxlan_tunnel_pool; + +/** + * Pool of child tunnels + */ +static vxlan_tunnel_ref_t *vxlan_tunnel_ref_pool; + +/** + * DB of template interfaces by SW interface index + */ +static index_t *gbp_vxlan_tunnel_db; + +/** + * DB of child interfaces by SW interface index + */ +static index_t *vxlan_tunnel_ref_db; + +/** + * handle registered with the ;unt infra + */ +static vlib_punt_hdl_t punt_hdl; + +static char *gbp_vxlan_tunnel_layer_strings[] = { +#define _(n,s) [GBP_VXLAN_TUN_##n] = s, + foreach_gbp_vxlan_tunnel_layer +#undef _ +}; + +#define GBP_VXLAN_TUN_DBG(...) \ + vlib_log_debug (gt_logger, __VA_ARGS__); + + +gbp_vxlan_tunnel_t * +gbp_vxlan_tunnel_get (index_t gti) +{ + return (pool_elt_at_index (gbp_vxlan_tunnel_pool, gti)); +} + +static vxlan_tunnel_ref_t * +vxlan_tunnel_ref_get (index_t vxri) +{ + return (pool_elt_at_index (vxlan_tunnel_ref_pool, vxri)); +} + +static u8 * +format_vxlan_tunnel_ref (u8 * s, va_list * args) +{ + index_t vxri = va_arg (*args, u32); + vxlan_tunnel_ref_t *vxr; + + vxr = vxlan_tunnel_ref_get (vxri); + + s = format (s, "[%U]", format_gbp_itf_hdl, vxr->vxr_itf); + + return (s); +} + +static void +gdb_vxlan_dep_del (u32 sw_if_index) +{ + vxlan_tunnel_ref_t *vxr; + gbp_vxlan_tunnel_t *gt; + index_t vxri; + u32 pos; + + vxr = vxlan_tunnel_ref_get (vxlan_tunnel_ref_db[sw_if_index]); + vxri = vxr - vxlan_tunnel_ref_pool; + gt = gbp_vxlan_tunnel_get (vxr->vxr_parent); + + GBP_VXLAN_TUN_DBG ("del-dep:%U", format_vxlan_tunnel_ref, vxri); + + vxlan_tunnel_ref_db[vxr->vxr_sw_if_index] = INDEX_INVALID; + pos = vec_search (gt->gt_tuns, vxri); + + ASSERT (~0 != pos); + vec_del1 (gt->gt_tuns, pos); + + vnet_vxlan_gbp_tunnel_del (vxr->vxr_sw_if_index); + + pool_put (vxlan_tunnel_ref_pool, vxr); +} + +static gbp_itf_hdl_t +gdb_vxlan_dep_add (gbp_vxlan_tunnel_t * gt, + const ip46_address_t * src, const ip46_address_t * dst) +{ + vnet_vxlan_gbp_tunnel_add_del_args_t args = { + .is_add = 1, + .is_ip6 = !ip46_address_is_ip4 (src), + .vni = gt->gt_vni, + .src = *src, + .dst = *dst, + .instance = ~0, + .mode = (GBP_VXLAN_TUN_L2 == gt->gt_layer ? + VXLAN_GBP_TUNNEL_MODE_L2 : VXLAN_GBP_TUNNEL_MODE_L3), + }; + vxlan_tunnel_ref_t *vxr; + u32 sw_if_index; + index_t vxri; + int rv; + + sw_if_index = ~0; + rv = vnet_vxlan_gbp_tunnel_add_del (&args, &sw_if_index); + + if (VNET_API_ERROR_TUNNEL_EXIST == rv) + { + vxri = vxlan_tunnel_ref_db[sw_if_index]; + + vxr = vxlan_tunnel_ref_get (vxri); + gbp_itf_lock (vxr->vxr_itf); + } + else if (0 == rv) + { + ASSERT (~0 != sw_if_index); + GBP_VXLAN_TUN_DBG ("add-dep:%U %U %U %d", format_vnet_sw_if_index_name, + vnet_get_main (), sw_if_index, + format_ip46_address, src, IP46_TYPE_ANY, + format_ip46_address, dst, IP46_TYPE_ANY, gt->gt_vni); + + pool_get_zero (vxlan_tunnel_ref_pool, vxr); + + vxri = (vxr - vxlan_tunnel_ref_pool); + vxr->vxr_parent = gt - gbp_vxlan_tunnel_pool; + vxr->vxr_sw_if_index = sw_if_index; + vxr->vxr_layer = gt->gt_layer; + + /* + * store the child both on the parent's list and the global DB + */ + vec_add1 (gt->gt_tuns, vxri); + + vec_validate_init_empty (vxlan_tunnel_ref_db, + vxr->vxr_sw_if_index, INDEX_INVALID); + vxlan_tunnel_ref_db[vxr->vxr_sw_if_index] = vxri; + + if (GBP_VXLAN_TUN_L2 == vxr->vxr_layer) + { + l2output_feat_masks_t ofeat; + l2input_feat_masks_t ifeat; + gbp_bridge_domain_t *gbd; + + gbd = gbp_bridge_domain_get (gt->gt_gbd); + vxr->vxr_itf = gbp_itf_l2_add_and_lock_w_free + (vxr->vxr_sw_if_index, gt->gt_gbd, gdb_vxlan_dep_del); + + ofeat = L2OUTPUT_FEAT_GBP_POLICY_MAC; + ifeat = L2INPUT_FEAT_NONE; + + if (!(gbd->gb_flags & GBP_BD_FLAG_DO_NOT_LEARN)) + ifeat |= L2INPUT_FEAT_GBP_LEARN; + + gbp_itf_l2_set_output_feature (vxr->vxr_itf, ofeat); + gbp_itf_l2_set_input_feature (vxr->vxr_itf, ifeat); + } + else + { + vxr->vxr_itf = gbp_itf_l3_add_and_lock_w_free + (vxr->vxr_sw_if_index, gt->gt_grd, gdb_vxlan_dep_del); + + gbp_itf_l3_set_input_feature (vxr->vxr_itf, GBP_ITF_L3_FEAT_LEARN); + } + } + else + { + return (GBP_ITF_HDL_INVALID); + } + + return (vxr->vxr_itf); +} + +u32 +vxlan_gbp_tunnel_get_parent (u32 sw_if_index) +{ + ASSERT ((sw_if_index < vec_len (vxlan_tunnel_ref_db)) && + (INDEX_INVALID != vxlan_tunnel_ref_db[sw_if_index])); + + gbp_vxlan_tunnel_t *gt; + vxlan_tunnel_ref_t *vxr; + + vxr = vxlan_tunnel_ref_get (vxlan_tunnel_ref_db[sw_if_index]); + gt = gbp_vxlan_tunnel_get (vxr->vxr_parent); + + return (gt->gt_sw_if_index); +} + +gbp_itf_hdl_t +vxlan_gbp_tunnel_lock_itf (u32 sw_if_index) +{ + ASSERT ((sw_if_index < vec_len (vxlan_tunnel_ref_db)) && + (INDEX_INVALID != vxlan_tunnel_ref_db[sw_if_index])); + + vxlan_tunnel_ref_t *vxr; + + vxr = vxlan_tunnel_ref_get (vxlan_tunnel_ref_db[sw_if_index]); + + gbp_itf_lock (vxr->vxr_itf); + + return (vxr->vxr_itf); +} + + +gbp_vxlan_tunnel_type_t +gbp_vxlan_tunnel_get_type (u32 sw_if_index) +{ + if (sw_if_index < vec_len (vxlan_tunnel_ref_db) && + INDEX_INVALID != vxlan_tunnel_ref_db[sw_if_index]) + { + return (VXLAN_GBP_TUNNEL); + } + else if (sw_if_index < vec_len (gbp_vxlan_tunnel_db) && + INDEX_INVALID != gbp_vxlan_tunnel_db[sw_if_index]) + { + return (GBP_VXLAN_TEMPLATE_TUNNEL); + } + + ASSERT (0); + return (GBP_VXLAN_TEMPLATE_TUNNEL); +} + +gbp_itf_hdl_t +gbp_vxlan_tunnel_clone_and_lock (u32 sw_if_index, + const ip46_address_t * src, + const ip46_address_t * dst) +{ + gbp_vxlan_tunnel_t *gt; + index_t gti; + + gti = gbp_vxlan_tunnel_db[sw_if_index]; + + if (INDEX_INVALID == gti) + return (GBP_ITF_HDL_INVALID); + + gt = pool_elt_at_index (gbp_vxlan_tunnel_pool, gti); + + return (gdb_vxlan_dep_add (gt, src, dst)); +} + +void +vxlan_gbp_tunnel_unlock (u32 sw_if_index) +{ + /* vxlan_tunnel_ref_t *vxr; */ + /* index_t vxri; */ + + /* vxri = vxlan_tunnel_ref_db[sw_if_index]; */ + + /* ASSERT (vxri != INDEX_INVALID); */ + + /* vxr = vxlan_tunnel_ref_get (vxri); */ + + /* gdb_vxlan_dep_del (vxri); */ +} + +void +gbp_vxlan_walk (gbp_vxlan_cb_t cb, void *ctx) +{ + gbp_vxlan_tunnel_t *gt; + + /* *INDENT-OFF* */ + pool_foreach (gt, gbp_vxlan_tunnel_pool) + { + if (WALK_CONTINUE != cb(gt, ctx)) + break; + } + /* *INDENT-ON* */ +} + +static walk_rc_t +gbp_vxlan_tunnel_show_one (gbp_vxlan_tunnel_t * gt, void *ctx) +{ + vlib_cli_output (ctx, "%U", format_gbp_vxlan_tunnel, + gt - gbp_vxlan_tunnel_pool); + + return (WALK_CONTINUE); +} + +static u8 * +format_gbp_vxlan_tunnel_name (u8 * s, va_list * args) +{ + u32 dev_instance = va_arg (*args, u32); + + return format (s, "gbp-vxlan-%d", dev_instance); +} + +u8 * +format_gbp_vxlan_tunnel_layer (u8 * s, va_list * args) +{ + gbp_vxlan_tunnel_layer_t gl = va_arg (*args, gbp_vxlan_tunnel_layer_t); + s = format (s, "%s", gbp_vxlan_tunnel_layer_strings[gl]); + + return (s); +} + +u8 * +format_gbp_vxlan_tunnel (u8 * s, va_list * args) +{ + u32 dev_instance = va_arg (*args, u32); + CLIB_UNUSED (int verbose) = va_arg (*args, int); + gbp_vxlan_tunnel_t *gt = gbp_vxlan_tunnel_get (dev_instance); + index_t *vxri; + + s = format (s, " [%d] gbp-vxlan-tunnel: hw:%d sw:%d vni:%d %U", + dev_instance, gt->gt_hw_if_index, + gt->gt_sw_if_index, gt->gt_vni, + format_gbp_vxlan_tunnel_layer, gt->gt_layer); + if (GBP_VXLAN_TUN_L2 == gt->gt_layer) + s = format (s, " BD:%d gbd-index:%d", gt->gt_bd_rd_id, gt->gt_gbd); + else + s = format (s, " RD:%d grd-index:%d", gt->gt_bd_rd_id, gt->gt_grd); + + s = format (s, " dependents:"); + vec_foreach (vxri, gt->gt_tuns) + { + s = format (s, "\n %U, ", format_vxlan_tunnel_ref, *vxri); + } + + return s; +} + +typedef struct gbp_vxlan_tx_trace_t_ +{ + u32 vni; +} gbp_vxlan_tx_trace_t; + +u8 * +format_gbp_vxlan_tx_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + gbp_vxlan_tx_trace_t *t = va_arg (*args, gbp_vxlan_tx_trace_t *); + + s = format (s, "GBP-VXLAN: vni:%d", t->vni); + + return (s); +} + +clib_error_t * +gbp_vxlan_interface_admin_up_down (vnet_main_t * vnm, + u32 hw_if_index, u32 flags) +{ + vnet_hw_interface_t *hi; + u32 ti; + + hi = vnet_get_hw_interface (vnm, hw_if_index); + + if (NULL == gbp_vxlan_tunnel_db || + hi->sw_if_index >= vec_len (gbp_vxlan_tunnel_db)) + return (NULL); + + ti = gbp_vxlan_tunnel_db[hi->sw_if_index]; + + if (~0 == ti) + /* not one of ours */ + return (NULL); + + if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) + vnet_hw_interface_set_flags (vnm, hw_if_index, + VNET_HW_INTERFACE_FLAG_LINK_UP); + else + vnet_hw_interface_set_flags (vnm, hw_if_index, 0); + + return (NULL); +} + +static uword +gbp_vxlan_interface_tx (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * frame) +{ + clib_warning ("you shouldn't be here, leaking buffers..."); + return frame->n_vectors; +} + +/* *INDENT-OFF* */ +VNET_DEVICE_CLASS (gbp_vxlan_device_class) = { + .name = "GBP VXLAN tunnel-template", + .format_device_name = format_gbp_vxlan_tunnel_name, + .format_device = format_gbp_vxlan_tunnel, + .format_tx_trace = format_gbp_vxlan_tx_trace, + .admin_up_down_function = gbp_vxlan_interface_admin_up_down, + .tx_function = gbp_vxlan_interface_tx, +}; + +VNET_HW_INTERFACE_CLASS (gbp_vxlan_hw_interface_class) = { + .name = "GBP-VXLAN", + .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P, +}; +/* *INDENT-ON* */ + +int +gbp_vxlan_tunnel_add (u32 vni, gbp_vxlan_tunnel_layer_t layer, + u32 bd_rd_id, + const ip4_address_t * src, u32 * sw_if_indexp) +{ + gbp_vxlan_tunnel_t *gt; + index_t gti; + uword *p; + int rv; + + rv = 0; + p = hash_get (gv_db, vni); + + GBP_VXLAN_TUN_DBG ("add: %d %d %d", vni, layer, bd_rd_id); + + if (NULL == p) + { + vnet_sw_interface_t *si; + vnet_hw_interface_t *hi; + index_t gbi, grdi; + vnet_main_t *vnm; + + gbi = grdi = INDEX_INVALID; + + if (layer == GBP_VXLAN_TUN_L2) + { + gbi = gbp_bridge_domain_find_and_lock (bd_rd_id); + + if (INDEX_INVALID == gbi) + { + return (VNET_API_ERROR_BD_NOT_MODIFIABLE); + } + } + else + { + grdi = gbp_route_domain_find_and_lock (bd_rd_id); + + if (INDEX_INVALID == grdi) + { + return (VNET_API_ERROR_NO_SUCH_FIB); + } + } + + vnm = vnet_get_main (); + pool_get (gbp_vxlan_tunnel_pool, gt); + gti = gt - gbp_vxlan_tunnel_pool; + + gt->gt_vni = vni; + gt->gt_layer = layer; + gt->gt_bd_rd_id = bd_rd_id; + gt->gt_src.ip4.as_u32 = src->as_u32; + gt->gt_hw_if_index = vnet_register_interface (vnm, + gbp_vxlan_device_class.index, + gti, + gbp_vxlan_hw_interface_class.index, + gti); + + hi = vnet_get_hw_interface (vnm, gt->gt_hw_if_index); + + gt->gt_sw_if_index = hi->sw_if_index; + + /* don't flood packets in a BD to these interfaces */ + si = vnet_get_sw_interface (vnm, gt->gt_sw_if_index); + si->flood_class = VNET_FLOOD_CLASS_NO_FLOOD; + + if (layer == GBP_VXLAN_TUN_L2) + { + gbp_bridge_domain_t *gb; + + gb = gbp_bridge_domain_get (gbi); + + gt->gt_gbd = gbi; + gb->gb_vni = gti; + /* set it up as a GBP interface */ + gt->gt_itf = gbp_itf_l2_add_and_lock (gt->gt_sw_if_index, + gt->gt_gbd); + gbp_itf_l2_set_input_feature (gt->gt_itf, L2INPUT_FEAT_GBP_LEARN); + } + else + { + gt->gt_grd = grdi; + gt->gt_itf = gbp_itf_l3_add_and_lock (gt->gt_sw_if_index, + gt->gt_grd); + gbp_itf_l3_set_input_feature (gt->gt_itf, GBP_ITF_L3_FEAT_LEARN); + } + + /* + * save the tunnel by VNI and by sw_if_index + */ + hash_set (gv_db, vni, gti); + + vec_validate_init_empty (gbp_vxlan_tunnel_db, + gt->gt_sw_if_index, INDEX_INVALID); + gbp_vxlan_tunnel_db[gt->gt_sw_if_index] = gti; + + if (sw_if_indexp) + *sw_if_indexp = gt->gt_sw_if_index; + + vxlan_gbp_register_udp_ports (); + } + else + { + gti = p[0]; + rv = VNET_API_ERROR_IF_ALREADY_EXISTS; + } + + GBP_VXLAN_TUN_DBG ("add: %U", format_gbp_vxlan_tunnel, gti); + + return (rv); +} + +int +gbp_vxlan_tunnel_del (u32 vni) +{ + gbp_vxlan_tunnel_t *gt; + uword *p; + + p = hash_get (gv_db, vni); + + if (NULL != p) + { + vnet_main_t *vnm; + + vnm = vnet_get_main (); + gt = gbp_vxlan_tunnel_get (p[0]); + + vxlan_gbp_unregister_udp_ports (); + + GBP_VXLAN_TUN_DBG ("del: %U", format_gbp_vxlan_tunnel, + gt - gbp_vxlan_tunnel_pool); + + gbp_endpoint_flush (GBP_ENDPOINT_SRC_DP, gt->gt_sw_if_index); + ASSERT (0 == vec_len (gt->gt_tuns)); + vec_free (gt->gt_tuns); + + gbp_itf_unlock (>->gt_itf); + + if (GBP_VXLAN_TUN_L2 == gt->gt_layer) + { + gbp_bridge_domain_unlock (gt->gt_gbd); + } + else + { + gbp_route_domain_unlock (gt->gt_grd); + } + + vnet_sw_interface_set_flags (vnm, gt->gt_sw_if_index, 0); + vnet_delete_hw_interface (vnm, gt->gt_hw_if_index); + + hash_unset (gv_db, vni); + gbp_vxlan_tunnel_db[gt->gt_sw_if_index] = INDEX_INVALID; + + pool_put (gbp_vxlan_tunnel_pool, gt); + } + else + return VNET_API_ERROR_NO_SUCH_ENTRY; + + return (0); +} + +static clib_error_t * +gbp_vxlan_show (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + + vlib_cli_output (vm, "GBP-VXLAN Interfaces:"); + + gbp_vxlan_walk (gbp_vxlan_tunnel_show_one, vm); + + return (NULL); +} + +/*? + * Show Group Based Policy VXLAN tunnels + * + * @cliexpar + * @cliexstart{show gbp vxlan} + * @cliexend + ?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (gbp_vxlan_show_node, static) = { + .path = "show gbp vxlan", + .short_help = "show gbp vxlan\n", + .function = gbp_vxlan_show, +}; +/* *INDENT-ON* */ + +static clib_error_t * +gbp_vxlan_init (vlib_main_t * vm) +{ + vxlan_gbp_main_t *vxm = &vxlan_gbp_main; + + gt_logger = vlib_log_register_class ("gbp", "tun"); + + punt_hdl = vlib_punt_client_register ("gbp-vxlan"); + + vlib_punt_register (punt_hdl, + vxm->punt_no_such_tunnel[FIB_PROTOCOL_IP4], + "gbp-vxlan4"); + + return (0); +} + +/* *INDENT-OFF* */ +VLIB_INIT_FUNCTION (gbp_vxlan_init) = +{ + .runs_after = VLIB_INITS("punt_init", "vxlan_gbp_init"), +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |