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/*
* gbp.h : Group Based Policy
*
* 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.h>
/**
* Single contract DB instance
*/
gbp_contract_db_t gbp_contract_db;
void
gbp_contract_update (epg_id_t src_epg, epg_id_t dst_epg, u32 acl_index)
{
gbp_main_t *gm = &gbp_main;
u32 *acl_vec = 0;
gbp_contract_value_t value = {
.gc_lc_index = ~0,
.gc_acl_index = ~0,
};
uword *p;
gbp_contract_key_t key = {
.gck_src = src_epg,
.gck_dst = dst_epg,
};
if (~0 == gm->gbp_acl_user_id)
{
acl_plugin_exports_init (&gm->acl_plugin);
gm->gbp_acl_user_id =
gm->acl_plugin.register_user_module ("GBP ACL", "src-epg", "dst-epg");
}
p = hash_get (gbp_contract_db.gc_hash, key.as_u32);
if (p != NULL)
{
value.as_u64 = p[0];
}
else
{
value.gc_lc_index =
gm->acl_plugin.get_lookup_context_index (gm->gbp_acl_user_id, src_epg,
dst_epg);
value.gc_acl_index = acl_index;
hash_set (gbp_contract_db.gc_hash, key.as_u32, value.as_u64);
}
if (value.gc_lc_index == ~0)
return;
vec_add1 (acl_vec, acl_index);
gm->acl_plugin.set_acl_vec_for_context (value.gc_lc_index, acl_vec);
vec_free (acl_vec);
}
void
gbp_contract_delete (epg_id_t src_epg, epg_id_t dst_epg)
{
gbp_main_t *gm = &gbp_main;
uword *p;
gbp_contract_value_t value;
gbp_contract_key_t key = {
.gck_src = src_epg,
.gck_dst = dst_epg,
};
p = hash_get (gbp_contract_db.gc_hash, key.as_u32);
if (p != NULL)
{
value.as_u64 = p[0];
gm->acl_plugin.put_lookup_context_index (value.gc_lc_index);
}
hash_unset (gbp_contract_db.gc_hash, key.as_u32);
}
void
gbp_contract_walk (gbp_contract_cb_t cb, void *ctx)
{
gbp_contract_key_t key;
gbp_contract_value_t value;
/* *INDENT-OFF* */
hash_foreach(key.as_u32, value.as_u64, gbp_contract_db.gc_hash,
({
gbp_contract_t gbpc = {
.gc_key = key,
.gc_value = value,
};
if (!cb(&gbpc, ctx))
break;
}));
/* *INDENT-ON* */
}
static clib_error_t *
gbp_contract_cli (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
epg_id_t src_epg_id = EPG_INVALID, dst_epg_id = EPG_INVALID;
u32 acl_index = ~0;
u8 add = 1;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "add"))
add = 1;
else if (unformat (input, "del"))
add = 0;
else if (unformat (input, "src-epg %d", &src_epg_id))
;
else if (unformat (input, "dst-epg %d", &dst_epg_id))
;
else if (unformat (input, "acl-index %d", &acl_index))
;
else
break;
}
if (EPG_INVALID == src_epg_id)
return clib_error_return (0, "Source EPG-ID must be specified");
if (EPG_INVALID == dst_epg_id)
return clib_error_return (0, "Destination EPG-ID must be specified");
if (add)
{
gbp_contract_update (src_epg_id, dst_epg_id, acl_index);
}
else
{
gbp_contract_delete (src_epg_id, dst_epg_id);
}
return (NULL);
}
/*?
* Configure a GBP Contract
*
* @cliexpar
* @cliexstart{set gbp contract [del] src-epg <ID> dst-epg <ID> acl-index <ACL>}
* @cliexend
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (gbp_contract_cli_node, static) =
{
.path = "gbp contract",
.short_help =
"gbp contract [del] src-epg <ID> dst-epg <ID> acl-index <ACL>",
.function = gbp_contract_cli,
};
/* *INDENT-ON* */
static clib_error_t *
gbp_contract_show (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
gbp_contract_key_t key;
gbp_contract_value_t value;
vlib_cli_output (vm, "Contracts:");
/* *INDENT-OFF* */
hash_foreach (key.as_u32, value.as_u64, gbp_contract_db.gc_hash,
{
vlib_cli_output (vm, " {%d,%d} -> %d", key.gck_src,
key.gck_dst, value.gc_acl_index);
});
/* *INDENT-ON* */
return (NULL);
}
/*?
* Show Group Based Policy Contracts
*
* @cliexpar
* @cliexstart{show gbp contract}
* @cliexend
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (gbp_contract_show_node, static) = {
.path = "show gbp contract",
.short_help = "show gbp contract\n",
.function = gbp_contract_show,
};
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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