--- /dev/null
+/*
+ * 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:
+ */
Code Review / vpp.git / blobdiff