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/*
* 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>
/**
* Attributes and configurations attached to interfaces by GBP
*/
typedef struct gbp_itf_t_
{
/**
* Number of references to this interface
*/
u32 gi_locks;
u32 gi_sw_if_index;
u32 gi_bd_index;
/**
* L2/L3 Features configured by each user
*/
u32 *gi_l2_input_fbs;
u32 gi_l2_input_fb;
u32 *gi_l2_output_fbs;
u32 gi_l2_output_fb;
} gbp_itf_t;
static gbp_itf_t *gbp_itfs;
static gbp_itf_t *
gbp_itf_get (index_t gii)
{
vec_validate (gbp_itfs, gii);
return (&gbp_itfs[gii]);
}
static index_t
gbp_itf_get_itf (u32 sw_if_index)
{
return (sw_if_index);
}
index_t
gbp_itf_add_and_lock (u32 sw_if_index, u32 bd_index)
{
gbp_itf_t *gi;
gi = gbp_itf_get (gbp_itf_get_itf (sw_if_index));
if (0 == gi->gi_locks)
{
gi->gi_sw_if_index = sw_if_index;
gi->gi_bd_index = bd_index;
if (~0 != gi->gi_bd_index)
set_int_l2_mode (vlib_get_main (), vnet_get_main (),
MODE_L2_BRIDGE, sw_if_index, bd_index,
L2_BD_PORT_TYPE_NORMAL, 0, 0);
}
gi->gi_locks++;
return (sw_if_index);
}
void
gbp_itf_unlock (index_t gii)
{
gbp_itf_t *gi;
gi = gbp_itf_get (gii);
ASSERT (gi->gi_locks > 0);
gi->gi_locks--;
if (0 == gi->gi_locks)
{
if (~0 != gi->gi_bd_index)
set_int_l2_mode (vlib_get_main (), vnet_get_main (), MODE_L3,
gi->gi_sw_if_index, 0, L2_BD_PORT_TYPE_NORMAL, 0, 0);
vec_free (gi->gi_l2_input_fbs);
vec_free (gi->gi_l2_output_fbs);
memset (gi, 0, sizeof (*gi));
}
}
void
gbp_itf_set_l2_input_feature (index_t gii,
index_t useri, l2input_feat_masks_t feats)
{
u32 diff_fb, new_fb, *fb, feat;
gbp_itf_t *gi;
gi = gbp_itf_get (gii);
if (gi->gi_bd_index == ~0)
return;
vec_validate (gi->gi_l2_input_fbs, useri);
gi->gi_l2_input_fbs[useri] = feats;
new_fb = 0;
vec_foreach (fb, gi->gi_l2_input_fbs)
{
new_fb |= *fb;
}
/* add new features */
diff_fb = (gi->gi_l2_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_l2_input_fb ^ new_fb) & gi->gi_l2_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_l2_input_fb = new_fb;
}
void
gbp_itf_set_l2_output_feature (index_t gii,
index_t useri, l2output_feat_masks_t feats)
{
u32 diff_fb, new_fb, *fb, feat;
gbp_itf_t *gi;
gi = gbp_itf_get (gii);
if (gi->gi_bd_index == ~0)
return;
vec_validate (gi->gi_l2_output_fbs, useri);
gi->gi_l2_output_fbs[useri] = feats;
new_fb = 0;
vec_foreach (fb, gi->gi_l2_output_fbs)
{
new_fb |= *fb;
}
/* add new features */
diff_fb = (gi->gi_l2_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_l2_output_fb ^ new_fb) & gi->gi_l2_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_l2_output_fb = new_fb;
}
u8 *
format_gbp_itf (u8 * s, va_list * args)
{
index_t gii = va_arg (*args, index_t);
gbp_itf_t *gi;
gi = gbp_itf_get (gii);
s = format (s, "%U locks:%d input-feats:%U output-feats:%U",
format_vnet_sw_if_index_name, vnet_get_main (),
gi->gi_sw_if_index, gi->gi_locks, format_l2_input_features, 0,
gi->gi_l2_input_fb, format_l2_output_features, 0,
gi->gi_l2_output_fb);
return (s);
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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