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/*
* Copyright (c) 2017 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 <stdint.h>
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vnet/bonding/node.h>
#include <lacp/node.h>
static int
lacp_set_port_selected (vlib_main_t *vm, bond_if_t *bif, member_if_t *mif)
{
uword p;
member_if_t *mif2;
/* Handle loopback port */
if (!memcmp (mif->partner.system, mif->actor.system, 6) &&
(mif->partner.key == mif->actor.key))
{
mif->loopback_port = 1;
mif->actor.state &= ~LACP_STATE_AGGREGATION;
mif->selected = LACP_PORT_UNSELECTED;
lacp_machine_dispatch (&lacp_mux_machine, vm, mif,
LACP_MUX_EVENT_UNSELECTED, &mif->mux_state);
return LACP_ERROR_LOOPBACK_PORT;
}
if (vec_len (bif->active_members))
{
p = *vec_elt_at_index (bif->active_members, 0);
mif2 = bond_get_member_by_sw_if_index (p);
if (mif2 && ((mif2->partner.key != mif->partner.key) ||
memcmp (mif2->partner.system, mif->partner.system, 6)))
{
mif->selected = LACP_PORT_UNSELECTED;
lacp_machine_dispatch (&lacp_mux_machine, vm, mif,
LACP_MUX_EVENT_UNSELECTED, &mif->mux_state);
return LACP_ERROR_BAD_KEY;
}
}
mif->selected = LACP_PORT_SELECTED;
switch (mif->mux_state)
{
case LACP_MUX_STATE_DETACHED:
break;
case LACP_MUX_STATE_WAITING:
if (!mif->ready)
return LACP_ERROR_NONE;
break;
case LACP_MUX_STATE_ATTACHED:
if (!(mif->partner.state & LACP_STATE_SYNCHRONIZATION))
return LACP_ERROR_NONE;
break;
case LACP_MUX_STATE_COLLECTING_DISTRIBUTING:
break;
default:
break;
}
return lacp_machine_dispatch (&lacp_mux_machine, vm, mif,
LACP_MUX_EVENT_SELECTED, &mif->mux_state);
}
int
lacp_selection_logic (vlib_main_t *vm, member_if_t *mif)
{
member_if_t *mif2;
bond_if_t *bif;
u32 *sw_if_index;
bif = bond_get_bond_if_by_dev_instance (mif->bif_dev_instance);
vec_foreach (sw_if_index, bif->members)
{
mif2 = bond_get_member_by_sw_if_index (*sw_if_index);
if (mif2 && (mif2->actor.state & LACP_STATE_SYNCHRONIZATION) &&
(mif2->ready_n == 0))
goto out;
}
vec_foreach (sw_if_index, bif->members)
{
mif2 = bond_get_member_by_sw_if_index (*sw_if_index);
if (mif2)
{
mif2->ready = 1;
if (mif2->selected == LACP_PORT_SELECTED)
lacp_machine_dispatch (&lacp_mux_machine, vm, mif2,
LACP_MUX_EVENT_READY, &mif2->mux_state);
}
}
out:
return lacp_set_port_selected (vm, bif, mif);
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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