--- /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_itf.h>
+#include <plugins/gbp/gbp_bridge_domain.h>
+#include <plugins/gbp/gbp_route_domain.h>
+
+#include <vnet/ip/ip.h>
+
+#define foreach_gbp_itf_mode \
+ _(L2, "l2") \
+ _(L3, "L3")
+
+typedef enum gbp_ift_mode_t_
+{
+#define _(s,v) GBP_ITF_MODE_##s,
+ foreach_gbp_itf_mode
+#undef _
+} gbp_itf_mode_t;
+
+/**
+ * Attributes and configurations attached to interfaces by GBP
+ */
+typedef struct gbp_itf_t_
+{
+ /**
+ * Number of references to this interface
+ */
+ u32 gi_locks;
+
+ /**
+ * The interface this wrapper is managing
+ */
+ u32 gi_sw_if_index;
+
+ /**
+ * The mode of the interface
+ */
+ gbp_itf_mode_t gi_mode;
+
+ /**
+ * Users of this interface - this is encoded in the user's handle
+ */
+ u32 *gi_users;
+
+ /**
+ * L2/L3 Features configured by each user
+ */
+ u32 *gi_input_fbs;
+ u32 gi_input_fb;
+ u32 *gi_output_fbs;
+ u32 gi_output_fb;
+
+ /**
+ * function to call when the interface is deleted.
+ */
+ gbp_itf_free_fn_t gi_free_fn;
+
+ union
+ {
+ /**
+ * GBP BD or RD index
+ */
+ u32 gi_gbi;
+ index_t gi_gri;
+ };
+} gbp_itf_t;
+
+static gbp_itf_t *gbp_itf_pool;
+static uword *gbp_itf_db;
+
+static const char *gbp_itf_feat_bit_pos_to_arc[] = {
+#define _(s,v,a) [GBP_ITF_L3_FEAT_POS_##s] = a,
+ foreach_gdb_l3_feature
+#undef _
+};
+
+static const char *gbp_itf_feat_bit_pos_to_feat[] = {
+#define _(s,v,a) [GBP_ITF_L3_FEAT_POS_##s] = v,
+ foreach_gdb_l3_feature
+#undef _
+};
+
+u8 *
+format_gbp_itf_l3_feat (u8 * s, va_list * args)
+{
+ gbp_itf_l3_feat_t flags = va_arg (*args, gbp_itf_l3_feat_t);
+
+#define _(a, b, c) \
+ if (flags & GBP_ITF_L3_FEAT_##a) \
+ s = format (s, "%s ", b);
+ foreach_gdb_l3_feature
+#undef _
+ return (s);
+}
+
+void
+gbp_itf_hdl_reset (gbp_itf_hdl_t * gh)
+{
+ *gh = GBP_ITF_HDL_INVALID;
+}
+
+bool
+gbp_itf_hdl_is_valid (gbp_itf_hdl_t gh)
+{
+ return (gh.gh_which != GBP_ITF_HDL_INVALID.gh_which);
+}
+
+static gbp_itf_t *
+gbp_itf_get (index_t gii)
+{
+ if (pool_is_free_index (gbp_itf_pool, gii))
+ return (NULL);
+
+ return (pool_elt_at_index (gbp_itf_pool, gii));
+}
+
+static gbp_itf_t *
+gbp_itf_find (u32 sw_if_index)
+{
+ uword *p;
+
+ p = hash_get (gbp_itf_db, sw_if_index);
+
+ if (NULL != p)
+ return (gbp_itf_get (p[0]));
+
+ return (NULL);
+}
+
+static gbp_itf_t *
+gbp_itf_find_hdl (gbp_itf_hdl_t gh)
+{
+ return (gbp_itf_find (gh.gh_which));
+}
+
+u32
+gbp_itf_get_sw_if_index (gbp_itf_hdl_t hdl)
+{
+ return (hdl.gh_which);
+}
+
+static gbp_itf_hdl_t
+gbp_itf_mk_hdl (gbp_itf_t * gi)
+{
+ gbp_itf_hdl_t gh;
+ u32 *useri;
+
+ pool_get (gi->gi_users, useri);
+ *useri = 0;
+
+ gh.gh_who = useri - gi->gi_users;
+ gh.gh_which = gi->gi_sw_if_index;
+
+ return (gh);
+}
+
+static gbp_itf_hdl_t
+gbp_itf_l2_add_and_lock_i (u32 sw_if_index, index_t gbi, gbp_itf_free_fn_t ff)
+{
+ gbp_itf_t *gi;
+
+ gi = gbp_itf_find (sw_if_index);
+
+ if (NULL == gi)
+ {
+ pool_get_zero (gbp_itf_pool, gi);
+
+ gi->gi_sw_if_index = sw_if_index;
+ gi->gi_gbi = gbi;
+ gi->gi_mode = GBP_ITF_MODE_L2;
+ gi->gi_free_fn = ff;
+
+ gbp_bridge_domain_itf_add (gi->gi_gbi, gi->gi_sw_if_index,
+ L2_BD_PORT_TYPE_NORMAL);
+
+ hash_set (gbp_itf_db, gi->gi_sw_if_index, gi - gbp_itf_pool);
+ }
+
+ gi->gi_locks++;
+
+ return (gbp_itf_mk_hdl (gi));
+}
+
+gbp_itf_hdl_t
+gbp_itf_l2_add_and_lock (u32 sw_if_index, index_t gbi)
+{
+ return (gbp_itf_l2_add_and_lock_i (sw_if_index, gbi, NULL));
+}
+
+gbp_itf_hdl_t
+gbp_itf_l2_add_and_lock_w_free (u32 sw_if_index,
+ index_t gbi, gbp_itf_free_fn_t ff)
+{
+ return (gbp_itf_l2_add_and_lock_i (sw_if_index, gbi, ff));
+}
+
+gbp_itf_hdl_t
+gbp_itf_l3_add_and_lock_i (u32 sw_if_index, index_t gri, gbp_itf_free_fn_t ff)
+{
+ gbp_itf_t *gi;
+
+ gi = gbp_itf_find (sw_if_index);
+
+ if (NULL == gi)
+ {
+ const gbp_route_domain_t *grd;
+ fib_protocol_t fproto;
+
+ pool_get_zero (gbp_itf_pool, gi);
+
+ gi->gi_sw_if_index = sw_if_index;
+ gi->gi_mode = GBP_ITF_MODE_L3;
+ gi->gi_gri = gri;
+ gi->gi_free_fn = ff;
+
+ grd = gbp_route_domain_get (gi->gi_gri);
+
+ ip4_sw_interface_enable_disable (gi->gi_sw_if_index, 1);
+ ip6_sw_interface_enable_disable (gi->gi_sw_if_index, 1);
+
+ FOR_EACH_FIB_IP_PROTOCOL (fproto)
+ ip_table_bind (fproto, gi->gi_sw_if_index, grd->grd_table_id[fproto]);
+
+ hash_set (gbp_itf_db, gi->gi_sw_if_index, gi - gbp_itf_pool);
+ }
+
+ gi->gi_locks++;
+
+ return (gbp_itf_mk_hdl (gi));
+}
+
+gbp_itf_hdl_t
+gbp_itf_l3_add_and_lock (u32 sw_if_index, index_t gri)
+{
+ return (gbp_itf_l3_add_and_lock_i (sw_if_index, gri, NULL));
+}
+
+gbp_itf_hdl_t
+gbp_itf_l3_add_and_lock_w_free (u32 sw_if_index,
+ index_t gri, gbp_itf_free_fn_t ff)
+{
+ return (gbp_itf_l3_add_and_lock_i (sw_if_index, gri, ff));
+}
+
+void
+gbp_itf_lock (gbp_itf_hdl_t gh)
+{
+ gbp_itf_t *gi;
+
+ if (!gbp_itf_hdl_is_valid (gh))
+ return;
+
+ gi = gbp_itf_find_hdl (gh);
+
+ gi->gi_locks++;
+}
+
+gbp_itf_hdl_t
+gbp_itf_clone_and_lock (gbp_itf_hdl_t gh)
+{
+ gbp_itf_t *gi;
+
+ if (!gbp_itf_hdl_is_valid (gh))
+ return (GBP_ITF_HDL_INVALID);
+
+ gi = gbp_itf_find_hdl (gh);
+
+ gi->gi_locks++;
+
+ return (gbp_itf_mk_hdl (gi));
+}
+
+void
+gbp_itf_unlock (gbp_itf_hdl_t * gh)
+{
+ gbp_itf_t *gi;
+
+ if (!gbp_itf_hdl_is_valid (*gh))
+ return;
+
+ gi = gbp_itf_find_hdl (*gh);
+ ASSERT (gi->gi_locks > 0);
+ gi->gi_locks--;
+
+ if (0 == gi->gi_locks)
+ {
+ if (GBP_ITF_MODE_L2 == gi->gi_mode)
+ {
+ gbp_itf_l2_set_input_feature (*gh, L2INPUT_FEAT_NONE);
+ gbp_itf_l2_set_output_feature (*gh, L2OUTPUT_FEAT_NONE);
+ gbp_bridge_domain_itf_del (gi->gi_gbi,
+ gi->gi_sw_if_index,
+ L2_BD_PORT_TYPE_NORMAL);
+ }
+ else
+ {
+ fib_protocol_t fproto;
+
+ gbp_itf_l3_set_input_feature (*gh, GBP_ITF_L3_FEAT_NONE);
+ FOR_EACH_FIB_IP_PROTOCOL (fproto)
+ ip_table_bind (fproto, gi->gi_sw_if_index, 0);
+
+ ip4_sw_interface_enable_disable (gi->gi_sw_if_index, 0);
+ ip6_sw_interface_enable_disable (gi->gi_sw_if_index, 0);
+ }
+
+ hash_unset (gbp_itf_db, gi->gi_sw_if_index);
+
+ if (gi->gi_free_fn)
+ gi->gi_free_fn (gi->gi_sw_if_index);
+
+ pool_free (gi->gi_users);
+ vec_free (gi->gi_input_fbs);
+ vec_free (gi->gi_output_fbs);
+
+ memset (gi, 0, sizeof (*gi));
+ }
+
+ gbp_itf_hdl_reset (gh);
+}
+
+void
+gbp_itf_l3_set_input_feature (gbp_itf_hdl_t gh, gbp_itf_l3_feat_t feats)
+{
+ u32 diff_fb, new_fb, *fb, feat;
+ gbp_itf_t *gi;
+
+ gi = gbp_itf_find_hdl (gh);
+
+ if (NULL == gi || GBP_ITF_MODE_L3 != gi->gi_mode)
+ return;
+
+ vec_validate (gi->gi_input_fbs, gh.gh_who);
+ gi->gi_input_fbs[gh.gh_who] = feats;
+
+ new_fb = 0;
+ vec_foreach (fb, gi->gi_input_fbs)
+ {
+ new_fb |= *fb;
+ }
+
+ /* add new features */
+ diff_fb = (gi->gi_input_fb ^ new_fb) & new_fb;
+
+ /* *INDENT-OFF* */
+ foreach_set_bit (feat, diff_fb,
+ ({
+ vnet_feature_enable_disable (gbp_itf_feat_bit_pos_to_arc[feat],
+ gbp_itf_feat_bit_pos_to_feat[feat],
+ gi->gi_sw_if_index, 1, 0, 0);
+ }));
+ /* *INDENT-ON* */
+
+ /* remove unneeded features */
+ diff_fb = (gi->gi_input_fb ^ new_fb) & gi->gi_input_fb;
+
+ /* *INDENT-OFF* */
+ foreach_set_bit (feat, diff_fb,
+ ({
+ vnet_feature_enable_disable (gbp_itf_feat_bit_pos_to_arc[feat],
+ gbp_itf_feat_bit_pos_to_feat[feat],
+ gi->gi_sw_if_index, 0, 0, 0);
+ }));
+ /* *INDENT-ON* */
+
+ gi->gi_input_fb = new_fb;
+}
+
+void
+gbp_itf_l2_set_input_feature (gbp_itf_hdl_t gh, l2input_feat_masks_t feats)
+{
+ u32 diff_fb, new_fb, *fb, feat;
+ gbp_itf_t *gi;
+
+ gi = gbp_itf_find_hdl (gh);
+
+ if (NULL == gi || GBP_ITF_MODE_L2 != gi->gi_mode)
+ {
+ ASSERT (0);
+ return;
+ }
+
+ vec_validate (gi->gi_input_fbs, gh.gh_who);
+ gi->gi_input_fbs[gh.gh_who] = feats;
+
+ new_fb = 0;
+ vec_foreach (fb, gi->gi_input_fbs)
+ {
+ new_fb |= *fb;
+ }
+
+ /* add new features */
+ diff_fb = (gi->gi_input_fb ^ new_fb) & new_fb;
+
+ /* *INDENT-OFF* */
+ foreach_set_bit (feat, diff_fb,
+ ({
+ l2input_intf_bitmap_enable (gi->gi_sw_if_index, (1 << feat), 1);
+ }));
+ /* *INDENT-ON* */
+
+ /* remove unneeded features */
+ diff_fb = (gi->gi_input_fb ^ new_fb) & gi->gi_input_fb;
+
+ /* *INDENT-OFF* */
+ foreach_set_bit (feat, diff_fb,
+ ({
+ l2input_intf_bitmap_enable (gi->gi_sw_if_index, (1 << feat), 0);
+ }));
+ /* *INDENT-ON* */
+
+ gi->gi_input_fb = new_fb;
+}
+
+void
+gbp_itf_l2_set_output_feature (gbp_itf_hdl_t gh, l2output_feat_masks_t feats)
+{
+ u32 diff_fb, new_fb, *fb, feat;
+ gbp_itf_t *gi;
+
+ gi = gbp_itf_find_hdl (gh);
+
+ if (NULL == gi || GBP_ITF_MODE_L2 != gi->gi_mode)
+ {
+ ASSERT (0);
+ return;
+ }
+
+ vec_validate (gi->gi_output_fbs, gh.gh_who);
+ gi->gi_output_fbs[gh.gh_who] = feats;
+
+ new_fb = 0;
+ vec_foreach (fb, gi->gi_output_fbs)
+ {
+ new_fb |= *fb;
+ }
+
+ /* add new features */
+ diff_fb = (gi->gi_output_fb ^ new_fb) & new_fb;
+
+ /* *INDENT-OFF* */
+ foreach_set_bit (feat, diff_fb,
+ ({
+ l2output_intf_bitmap_enable (gi->gi_sw_if_index, (1 << feat), 1);
+ }));
+ /* *INDENT-ON* */
+
+ /* remove unneeded features */
+ diff_fb = (gi->gi_output_fb ^ new_fb) & gi->gi_output_fb;
+
+ /* *INDENT-OFF* */
+ foreach_set_bit (feat, diff_fb,
+ ({
+ l2output_intf_bitmap_enable (gi->gi_sw_if_index, (1 << feat), 0);
+ }));
+ /* *INDENT-ON* */
+
+ gi->gi_output_fb = new_fb;
+}
+
+static u8 *
+format_gbp_itf_mode (u8 * s, va_list * args)
+{
+ gbp_itf_mode_t mode = va_arg (*args, gbp_itf_mode_t);
+
+ switch (mode)
+ {
+#define _(a,v) \
+ case GBP_ITF_MODE_##a: \
+ return format(s, "%s", v);
+ foreach_gbp_itf_mode
+#undef _
+ }
+ return (s);
+}
+
+static u8 *
+format_gbp_itf (u8 * s, va_list * args)
+{
+ index_t gii = va_arg (*args, index_t);
+ gbp_itf_t *gi;
+
+ if (INDEX_INVALID == gii)
+ return (format (s, "unset"));
+
+ gi = gbp_itf_get (gii);
+
+ s = format (s, "%U locks:%d mode:%U ",
+ format_vnet_sw_if_index_name, vnet_get_main (),
+ gi->gi_sw_if_index, gi->gi_locks,
+ format_gbp_itf_mode, gi->gi_mode);
+
+ if (GBP_ITF_MODE_L2 == gi->gi_mode)
+ s = format (s, "gbp-bd:%d input-feats:[%U] output-feats:[%U]",
+ gi->gi_gbi,
+ format_l2_input_features, gi->gi_input_fb, 0,
+ format_l2_output_features, gi->gi_output_fb, 0);
+ else
+ s = format (s, "gbp-rd:%d input-feats:[%U] output-feats:[%U]",
+ gi->gi_gbi,
+ format_gbp_itf_l3_feat, gi->gi_input_fb,
+ format_gbp_itf_l3_feat, gi->gi_output_fb);
+
+ return (s);
+}
+
+u8 *
+format_gbp_itf_hdl (u8 * s, va_list * args)
+{
+ gbp_itf_hdl_t gh = va_arg (*args, gbp_itf_hdl_t);
+ gbp_itf_t *gi;
+
+ gi = gbp_itf_find_hdl (gh);
+
+ if (NULL == gi)
+ return format (s, "INVALID");
+
+ return (format (s, "%U", format_gbp_itf, gi - gbp_itf_pool));
+}
+
+static clib_error_t *
+gbp_itf_show (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ u32 gii;
+
+ vlib_cli_output (vm, "Interfaces:");
+
+ /* *INDENT-OFF* */
+ pool_foreach_index (gii, gbp_itf_pool)
+ {
+ vlib_cli_output (vm, " [%d] %U", gii, format_gbp_itf, gii);
+ }
+ /* *INDENT-ON* */
+
+ return (NULL);
+}
+
+/*?
+ * Show Group Based Interfaces
+ *
+ * @cliexpar
+ * @cliexstart{show gbp contract}
+ * @cliexend
+ ?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (gbp_contract_show_node, static) = {
+ .path = "show gbp interface",
+ .short_help = "show gbp interface\n",
+ .function = gbp_itf_show,
+};
+/* *INDENT-ON* */
+
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
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