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vpp/src/vnet/interface.c
Damjan Marion c3148b1be8 misc: remove GNU Indent directives 
Type: refactor
Change-Id: I5235bf3e9aff58af6ba2c14e8c6529c4fc9ec86c
Signed-off-by: Damjan Marion <damarion@cisco.com>
2024-03-12 19:29:56 +00:00

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/*
* Copyright (c) 2015 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.
*/
/*
* interface.c: VNET interfaces/sub-interfaces
*
* Copyright (c) 2008 Eliot Dresselhaus
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <vnet/vnet.h>
#include <vnet/plugin/plugin.h>
#include <vnet/adj/adj.h>
#include <vnet/adj/adj_mcast.h>
#include <vnet/ip/ip.h>
#include <vnet/interface/rx_queue_funcs.h>
#include <vnet/interface/tx_queue_funcs.h>
VLIB_REGISTER_LOG_CLASS (if_default_log, static) = {
.class_name = "interface",
};
#define log_debug(fmt,...) vlib_log_debug(if_default_log.class, fmt, __VA_ARGS__)
#define log_err(fmt,...) vlib_log_err(if_default_log.class, fmt, __VA_ARGS__)
typedef enum vnet_interface_helper_flags_t_
{
VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE = (1 << 0),
VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE = (1 << 1),
} vnet_interface_helper_flags_t;
static clib_error_t *vnet_hw_interface_set_flags_helper (vnet_main_t * vnm,
u32 hw_if_index,
vnet_hw_interface_flags_t
flags,
vnet_interface_helper_flags_t
helper_flags);
static clib_error_t *vnet_sw_interface_set_flags_helper (vnet_main_t * vnm,
u32 sw_if_index,
vnet_sw_interface_flags_t
flags,
vnet_interface_helper_flags_t
helper_flags);
static clib_error_t *vnet_hw_interface_set_class_helper (vnet_main_t * vnm,
u32 hw_if_index,
u32 hw_class_index,
u32 redistribute);
typedef struct
{
/* Either sw or hw interface index. */
u32 sw_hw_if_index;
/* Flags. */
u32 flags;
} vnet_sw_hw_interface_state_t;
static void
serialize_vec_vnet_sw_hw_interface_state (serialize_main_t * m, va_list * va)
{
vnet_sw_hw_interface_state_t *s =
va_arg (*va, vnet_sw_hw_interface_state_t *);
u32 n = va_arg (*va, u32);
u32 i;
for (i = 0; i < n; i++)
{
serialize_integer (m, s[i].sw_hw_if_index,
sizeof (s[i].sw_hw_if_index));
serialize_integer (m, s[i].flags, sizeof (s[i].flags));
}
}
static void
unserialize_vec_vnet_sw_hw_interface_state (serialize_main_t * m,
va_list * va)
{
vnet_sw_hw_interface_state_t *s =
va_arg (*va, vnet_sw_hw_interface_state_t *);
u32 n = va_arg (*va, u32);
u32 i;
for (i = 0; i < n; i++)
{
unserialize_integer (m, &s[i].sw_hw_if_index,
sizeof (s[i].sw_hw_if_index));
unserialize_integer (m, &s[i].flags, sizeof (s[i].flags));
}
}
static vnet_sw_interface_flags_t
vnet_hw_interface_flags_to_sw (vnet_hw_interface_flags_t hwf)
{
vnet_sw_interface_flags_t swf = VNET_SW_INTERFACE_FLAG_NONE;
if (hwf & VNET_HW_INTERFACE_FLAG_LINK_UP)
swf |= VNET_SW_INTERFACE_FLAG_ADMIN_UP;
return (swf);
}
void
serialize_vnet_interface_state (serialize_main_t * m, va_list * va)
{
vnet_main_t *vnm = va_arg (*va, vnet_main_t *);
vnet_sw_hw_interface_state_t *sts = 0, *st;
vnet_sw_interface_t *sif;
vnet_hw_interface_t *hif;
vnet_interface_main_t *im = &vnm->interface_main;
/* Serialize hardware interface classes since they may have changed.
Must do this before sending up/down flags. */
pool_foreach (hif, im->hw_interfaces) {
vnet_hw_interface_class_t * hw_class = vnet_get_hw_interface_class (vnm, hif->hw_class_index);
serialize_cstring (m, hw_class->name);
}
/* Send sw/hw interface state when non-zero. */
pool_foreach (sif, im->sw_interfaces) {
if (sif->flags != 0)
{
vec_add2 (sts, st, 1);
st->sw_hw_if_index = sif->sw_if_index;
st->flags = sif->flags;
}
}
vec_serialize (m, sts, serialize_vec_vnet_sw_hw_interface_state);
if (sts)
vec_set_len (sts, 0);
pool_foreach (hif, im->hw_interfaces) {
if (hif->flags != 0)
{
vec_add2 (sts, st, 1);
st->sw_hw_if_index = hif->hw_if_index;
st->flags = vnet_hw_interface_flags_to_sw(hif->flags);
}
}
vec_serialize (m, sts, serialize_vec_vnet_sw_hw_interface_state);
vec_free (sts);
}
static vnet_hw_interface_flags_t
vnet_sw_interface_flags_to_hw (vnet_sw_interface_flags_t swf)
{
vnet_hw_interface_flags_t hwf = VNET_HW_INTERFACE_FLAG_NONE;
if (swf & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
hwf |= VNET_HW_INTERFACE_FLAG_LINK_UP;
return (hwf);
}
void
unserialize_vnet_interface_state (serialize_main_t * m, va_list * va)
{
vnet_main_t *vnm = va_arg (*va, vnet_main_t *);
vnet_sw_hw_interface_state_t *sts = 0, *st;
/* First set interface hardware class. */
{
vnet_interface_main_t *im = &vnm->interface_main;
vnet_hw_interface_t *hif;
char *class_name;
uword *p;
clib_error_t *error;
pool_foreach (hif, im->hw_interfaces) {
unserialize_cstring (m, &class_name);
p = hash_get_mem (im->hw_interface_class_by_name, class_name);
if (p)
{
error = vnet_hw_interface_set_class_helper
(vnm, hif->hw_if_index, p[0], /* redistribute */ 0);
}
else
error = clib_error_return (0, "hw class %s AWOL?", class_name);
if (error)
clib_error_report (error);
vec_free (class_name);
}
}
vec_unserialize (m, &sts, unserialize_vec_vnet_sw_hw_interface_state);
vec_foreach (st, sts)
vnet_sw_interface_set_flags_helper (vnm, st->sw_hw_if_index, st->flags,
/* no distribute */ 0);
vec_free (sts);
vec_unserialize (m, &sts, unserialize_vec_vnet_sw_hw_interface_state);
vec_foreach (st, sts)
{
vnet_hw_interface_set_flags_helper
(vnm, st->sw_hw_if_index, vnet_sw_interface_flags_to_hw (st->flags),
/* no distribute */ 0);
}
vec_free (sts);
}
static clib_error_t *
call_elf_section_interface_callbacks (vnet_main_t * vnm, u32 if_index,
u32 flags,
_vnet_interface_function_list_elt_t **
elts)
{
_vnet_interface_function_list_elt_t *elt;
vnet_interface_function_priority_t prio;
clib_error_t *error = 0;
for (prio = VNET_ITF_FUNC_PRIORITY_LOW;
prio <= VNET_ITF_FUNC_PRIORITY_HIGH; prio++)
{
elt = elts[prio];
while (elt)
{
error = elt->fp (vnm, if_index, flags);
if (error)
return error;
elt = elt->next_interface_function;
}
}
return error;
}
static clib_error_t *
call_hw_interface_add_del_callbacks (vnet_main_t * vnm, u32 hw_if_index,
u32 is_create)
{
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
vnet_hw_interface_class_t *hw_class =
vnet_get_hw_interface_class (vnm, hi->hw_class_index);
vnet_device_class_t *dev_class =
vnet_get_device_class (vnm, hi->dev_class_index);
clib_error_t *error = 0;
if (hw_class->interface_add_del_function
&& (error =
hw_class->interface_add_del_function (vnm, hw_if_index, is_create)))
return error;
if (dev_class->interface_add_del_function
&& (error =
dev_class->interface_add_del_function (vnm, hw_if_index,
is_create)))
return error;
error = call_elf_section_interface_callbacks
(vnm, hw_if_index, is_create, vnm->hw_interface_add_del_functions);
return error;
}
static clib_error_t *
call_sw_interface_add_del_callbacks (vnet_main_t * vnm, u32 sw_if_index,
u32 is_create)
{
return call_elf_section_interface_callbacks
(vnm, sw_if_index, is_create, vnm->sw_interface_add_del_functions);
}
static clib_error_t *
vnet_hw_interface_set_flags_helper (vnet_main_t * vnm, u32 hw_if_index,
vnet_hw_interface_flags_t flags,
vnet_interface_helper_flags_t
helper_flags)
{
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
vnet_hw_interface_class_t *hw_class =
vnet_get_hw_interface_class (vnm, hi->hw_class_index);
u32 mask;
clib_error_t *error = 0;
u32 is_create =
(helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE) != 0;
mask =
(VNET_HW_INTERFACE_FLAG_LINK_UP | VNET_HW_INTERFACE_FLAG_DUPLEX_MASK);
flags &= mask;
/* Call hardware interface add/del callbacks. */
if (is_create)
call_hw_interface_add_del_callbacks (vnm, hw_if_index, is_create);
/* Already in the desired state? */
if (!is_create && (hi->flags & mask) == flags)
goto done;
if ((hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP) !=
(flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
{
/* Do hardware class (e.g. ethernet). */
if (hw_class->link_up_down_function
&& (error = hw_class->link_up_down_function (vnm, hw_if_index,
flags)))
goto done;
error = call_elf_section_interface_callbacks
(vnm, hw_if_index, flags, vnm->hw_interface_link_up_down_functions);
if (error)
goto done;
}
hi->flags &= ~mask;
hi->flags |= flags;
done:
if (error)
log_err ("hw_set_flags_helper: %U", format_clib_error, error);
return error;
}
static clib_error_t *
vnet_sw_interface_set_flags_helper (vnet_main_t * vnm, u32 sw_if_index,
vnet_sw_interface_flags_t flags,
vnet_interface_helper_flags_t
helper_flags)
{
vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
u32 mask;
clib_error_t *error = 0;
u32 is_create =
(helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE) != 0;
u32 old_flags;
mask = VNET_SW_INTERFACE_FLAG_ADMIN_UP | VNET_SW_INTERFACE_FLAG_PUNT;
flags &= mask;
if (is_create)
{
error =
call_sw_interface_add_del_callbacks (vnm, sw_if_index, is_create);
if (error)
goto done;
if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
{
/* Notify everyone when the interface is created as admin up */
error = call_elf_section_interface_callbacks (vnm, sw_if_index,
flags,
vnm->
sw_interface_admin_up_down_functions);
if (error)
goto done;
}
}
else
{
vnet_sw_interface_t *si_sup = si;
/* Check that super interface is in correct state. */
if (si->type == VNET_SW_INTERFACE_TYPE_SUB)
{
si_sup = vnet_get_sw_interface (vnm, si->sup_sw_if_index);
/* Check to see if we're bringing down the soft interface and if it's parent is up */
if ((flags != (si_sup->flags & mask)) &&
(!((flags == 0)
&& ((si_sup->flags & mask) ==
VNET_SW_INTERFACE_FLAG_ADMIN_UP))))
{
error = clib_error_return (0, "super-interface %U must be %U",
format_vnet_sw_interface_name, vnm,
si_sup,
format_vnet_sw_interface_flags,
flags);
goto done;
}
}
/* Already in the desired state? */
if ((si->flags & mask) == flags)
goto done;
/* Sub-interfaces of hardware interfaces that do no redistribute,
do not redistribute themselves. */
if (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
{
vnet_hw_interface_t *hi =
vnet_get_hw_interface (vnm, si_sup->hw_if_index);
vnet_device_class_t *dev_class =
vnet_get_device_class (vnm, hi->dev_class_index);
if (!dev_class->redistribute)
helper_flags &=
~VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE;
}
/* set the flags now before invoking the registered clients
* so that the state they query is consistent with the state here notified */
old_flags = si->flags;
si->flags &= ~mask;
si->flags |= flags;
if ((flags | old_flags) & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
error = call_elf_section_interface_callbacks
(vnm, sw_if_index, flags,
vnm->sw_interface_admin_up_down_functions);
if (error)
{
/* restore flags on error */
si->flags = old_flags;
goto done;
}
if (si->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
{
vnet_hw_interface_t *hi =
vnet_get_hw_interface (vnm, si->hw_if_index);
vnet_hw_interface_class_t *hw_class =
vnet_get_hw_interface_class (vnm, hi->hw_class_index);
vnet_device_class_t *dev_class =
vnet_get_device_class (vnm, hi->dev_class_index);
if ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) &&
(si->flags & VNET_SW_INTERFACE_FLAG_ERROR))
{
error = clib_error_return (0, "Interface in the error state");
goto done;
}
/* update si admin up flag in advance if we are going admin down */
if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
si->flags &= ~VNET_SW_INTERFACE_FLAG_ADMIN_UP;
if (dev_class->admin_up_down_function
&& (error = dev_class->admin_up_down_function (vnm,
si->hw_if_index,
flags)))
{
/* restore si admin up flag to it's original state on errors */
si->flags = old_flags;
goto done;
}
if (hw_class->admin_up_down_function
&& (error = hw_class->admin_up_down_function (vnm,
si->hw_if_index,
flags)))
{
/* restore si admin up flag to it's original state on errors */
si->flags = old_flags;
goto done;
}
/* Admin down implies link down. */
if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
&& (hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
vnet_hw_interface_set_flags_helper (vnm, si->hw_if_index,
hi->flags &
~VNET_HW_INTERFACE_FLAG_LINK_UP,
helper_flags);
vnet_hw_if_update_runtime_data (vnm, si->hw_if_index);
}
}
si->flags &= ~mask;
si->flags |= flags;
done:
if (error)
log_err ("sw_set_flags_helper: %U", format_clib_error, error);
return error;
}
clib_error_t *
vnet_hw_interface_set_flags (vnet_main_t * vnm, u32 hw_if_index,
vnet_hw_interface_flags_t flags)
{
log_debug ("hw_set_flags: hw_if_index %u flags 0x%x", hw_if_index, flags);
return vnet_hw_interface_set_flags_helper
(vnm, hw_if_index, flags,
VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE);
}
clib_error_t *
vnet_sw_interface_set_flags (vnet_main_t * vnm, u32 sw_if_index,
vnet_sw_interface_flags_t flags)
{
log_debug ("sw_set_flags: sw_if_index %u flags 0x%x", sw_if_index, flags);
return vnet_sw_interface_set_flags_helper
(vnm, sw_if_index, flags,
VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE);
}
void
vnet_sw_interface_admin_up (vnet_main_t * vnm, u32 sw_if_index)
{
u32 flags = vnet_sw_interface_get_flags (vnm, sw_if_index);
log_debug ("sw_admin_up: sw_if_index %u", sw_if_index);
if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
{
flags |= VNET_SW_INTERFACE_FLAG_ADMIN_UP;
vnet_sw_interface_set_flags (vnm, sw_if_index, flags);
}
}
void
vnet_sw_interface_admin_down (vnet_main_t * vnm, u32 sw_if_index)
{
u32 flags = vnet_sw_interface_get_flags (vnm, sw_if_index);
log_debug ("sw_admin_down: sw_if_index %u", sw_if_index);
if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
{
flags &= ~(VNET_SW_INTERFACE_FLAG_ADMIN_UP);
vnet_sw_interface_set_flags (vnm, sw_if_index, flags);
}
}
static void
vnet_if_update_lookup_tables (vnet_main_t *vnm, u32 sw_if_index)
{
vnet_interface_main_t *im = &vnm->interface_main;
vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
vec_validate_init_empty (im->hw_if_index_by_sw_if_index, sw_if_index, ~0);
vec_validate_init_empty (im->if_out_arc_end_next_index_by_sw_if_index,
sw_if_index, ~0);
im->hw_if_index_by_sw_if_index[sw_if_index] = hi->hw_if_index;
im->if_out_arc_end_next_index_by_sw_if_index[sw_if_index] =
hi->if_out_arc_end_node_next_index;
}
static u32
vnet_create_sw_interface_no_callbacks (vnet_main_t * vnm,
vnet_sw_interface_t * template)
{
vnet_interface_main_t *im = &vnm->interface_main;
vnet_sw_interface_t *sw;
u32 sw_if_index;
pool_get (im->sw_interfaces, sw);
sw_if_index = sw - im->sw_interfaces;
sw[0] = template[0];
sw->flags = 0;
sw->sw_if_index = sw_if_index;
if (sw->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
sw->sup_sw_if_index = sw->sw_if_index;
/* Allocate counters for this interface. */
{
u32 i;
vnet_interface_counter_lock (im);
for (i = 0; i < vec_len (im->sw_if_counters); i++)
{
vlib_validate_simple_counter (&im->sw_if_counters[i], sw_if_index);
vlib_zero_simple_counter (&im->sw_if_counters[i], sw_if_index);
}
for (i = 0; i < vec_len (im->combined_sw_if_counters); i++)
{
vlib_validate_combined_counter (&im->combined_sw_if_counters[i],
sw_if_index);
vlib_zero_combined_counter (&im->combined_sw_if_counters[i],
sw_if_index);
}
vnet_interface_counter_unlock (im);
}
vnet_if_update_lookup_tables (vnm, sw_if_index);
return sw_if_index;
}
clib_error_t *
vnet_create_sw_interface (vnet_main_t * vnm, vnet_sw_interface_t * template,
u32 * sw_if_index)
{
vnet_interface_main_t *im = &vnm->interface_main;
clib_error_t *error;
vnet_hw_interface_t *hi;
vnet_device_class_t *dev_class;
if (template->sub.eth.flags.two_tags == 1
&& template->sub.eth.flags.exact_match == 1
&& (template->sub.eth.flags.inner_vlan_id_any == 1
|| template->sub.eth.flags.outer_vlan_id_any == 1))
{
char *str = "inner-dot1q any exact-match is unsupported";
error = clib_error_return (0, str);
log_err ("create_sw_interface: %s", str);
return error;
}
hi = vnet_get_sup_hw_interface (vnm, template->sup_sw_if_index);
dev_class = vnet_get_device_class (vnm, hi->dev_class_index);
if (template->type == VNET_SW_INTERFACE_TYPE_SUB &&
dev_class->subif_add_del_function)
{
error = dev_class->subif_add_del_function (vnm, hi->hw_if_index,
(struct vnet_sw_interface_t
*) template, 1);
if (error)
return error;
}
*sw_if_index = vnet_create_sw_interface_no_callbacks (vnm, template);
error = vnet_sw_interface_set_flags_helper
(vnm, *sw_if_index, template->flags,
VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
if (error)
{
/* undo the work done by vnet_create_sw_interface_no_callbacks() */
log_err ("create_sw_interface: set flags failed\n %U",
format_clib_error, error);
call_sw_interface_add_del_callbacks (vnm, *sw_if_index, 0);
vnet_sw_interface_t *sw =
pool_elt_at_index (im->sw_interfaces, *sw_if_index);
pool_put (im->sw_interfaces, sw);
}
else
{
vnet_sw_interface_t *sw =
pool_elt_at_index (im->sw_interfaces, *sw_if_index);
log_debug ("create_sw_interface: interface %U (sw_if_index %u) created",
format_vnet_sw_interface_name, vnm, sw, *sw_if_index);
}
return error;
}
void
vnet_delete_sw_interface (vnet_main_t * vnm, u32 sw_if_index)
{
vnet_interface_main_t *im = &vnm->interface_main;
vnet_sw_interface_t *sw =
pool_elt_at_index (im->sw_interfaces, sw_if_index);
log_debug ("delete_sw_interface: sw_if_index %u, name '%U'",
sw_if_index, format_vnet_sw_if_index_name, vnm, sw_if_index);
/* Check if the interface has config and is removed from L2 BD or XConnect */
vnet_clear_sw_interface_tag (vnm, sw_if_index);
/* Bring down interface in case it is up. */
if (sw->flags != 0)
vnet_sw_interface_set_flags (vnm, sw_if_index, /* flags */ 0);
call_sw_interface_add_del_callbacks (vnm, sw_if_index, /* is_create */ 0);
pool_put (im->sw_interfaces, sw);
}
static clib_error_t *
call_sw_interface_mtu_change_callbacks (vnet_main_t * vnm, u32 sw_if_index)
{
return call_elf_section_interface_callbacks
(vnm, sw_if_index, 0, vnm->sw_interface_mtu_change_functions);
}
void
vnet_sw_interface_set_mtu (vnet_main_t * vnm, u32 sw_if_index, u32 mtu)
{
vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
if (si->mtu[VNET_MTU_L3] != mtu)
{
si->mtu[VNET_MTU_L3] = mtu;
log_debug ("set_mtu: interface %U, new mtu %u",
format_vnet_sw_if_index_name, vnm, sw_if_index, mtu);
call_sw_interface_mtu_change_callbacks (vnm, sw_if_index);
}
}
void
vnet_sw_interface_set_protocol_mtu (vnet_main_t * vnm, u32 sw_if_index,
u32 mtu[])
{
vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
bool changed = false;
int i;
for (i = 0; i < VNET_N_MTU; i++)
{
if (si->mtu[i] != mtu[i])
{
si->mtu[i] = mtu[i];
changed = true;
}
}
/* Notify interested parties */
if (changed)
{
log_debug ("set_protocol_mtu: interface %U l3 %u ip4 %u ip6 %u mpls %u",
format_vnet_sw_if_index_name, vnm, sw_if_index,
mtu[VNET_MTU_L3], mtu[VNET_MTU_IP4], mtu[VNET_MTU_IP6],
mtu[VNET_MTU_MPLS]);
call_sw_interface_mtu_change_callbacks (vnm, sw_if_index);
}
}
void
vnet_sw_interface_ip_directed_broadcast (vnet_main_t * vnm,
u32 sw_if_index, u8 enable)
{
vnet_sw_interface_t *si;
si = vnet_get_sw_interface (vnm, sw_if_index);
if (enable)
si->flags |= VNET_SW_INTERFACE_FLAG_DIRECTED_BCAST;
else
si->flags &= ~VNET_SW_INTERFACE_FLAG_DIRECTED_BCAST;
ip4_directed_broadcast (sw_if_index, enable);
}
/*
* Reflect a change in hardware MTU on protocol MTUs
*/
static walk_rc_t
sw_interface_walk_callback (vnet_main_t * vnm, u32 sw_if_index, void *ctx)
{
u32 *link_mtu = ctx;
vnet_sw_interface_set_mtu (vnm, sw_if_index, *link_mtu);
return WALK_CONTINUE;
}
clib_error_t *
vnet_hw_interface_set_max_frame_size (vnet_main_t *vnm, u32 hw_if_index,
u32 fs)
{
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
vnet_hw_interface_class_t *hw_if_class =
vnet_get_hw_interface_class (vnm, hi->hw_class_index);
clib_error_t *err = 0;
log_debug ("set_max_frame_size: interface %v, max_frame_size %u -> %u",
hi->name, hi->max_frame_size, fs);
if (hw_if_class->set_max_frame_size == 0)
return vnet_error (VNET_ERR_UNSUPPORTED,
"hw class doesn't support changing Max Frame Size");
if (hi->max_frame_size != fs)
{
u32 mtu;
if (hw_if_class->set_max_frame_size)
if ((err = hw_if_class->set_max_frame_size (vnm, hi, fs)))
return err;
hi->max_frame_size = fs;
mtu = fs - hi->frame_overhead;
vnet_hw_interface_walk_sw (vnm, hw_if_index, sw_interface_walk_callback,
&mtu);
}
return 0;
}
clib_error_t *
vnet_hw_interface_set_mtu (vnet_main_t *vnm, u32 hw_if_index, u32 mtu)
{
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
return vnet_hw_interface_set_max_frame_size (vnm, hw_if_index,
mtu + hi->frame_overhead);
}
static void
setup_tx_node (vlib_main_t * vm,
u32 node_index, vnet_device_class_t * dev_class)
{
vlib_node_t *n = vlib_get_node (vm, node_index);
n->format_trace = dev_class->format_tx_trace;
vlib_register_errors (vm, node_index, dev_class->tx_function_n_errors,
dev_class->tx_function_error_strings,
dev_class->tx_function_error_counters);
}
static void
setup_output_node (vlib_main_t * vm,
u32 node_index, vnet_hw_interface_class_t * hw_class)
{
vlib_node_t *n = vlib_get_node (vm, node_index);
n->format_buffer = hw_class->format_header;
n->unformat_buffer = hw_class->unformat_header;
}
void
vnet_reset_interface_l3_output_node (vlib_main_t *vm, u32 sw_if_index)
{
vnet_set_interface_l3_output_node (vm, sw_if_index,
(u8 *) "interface-output");
}
void
vnet_set_interface_l3_output_node (vlib_main_t *vm, u32 sw_if_index,
u8 *output_node)
{
vlib_node_t *l3_node;
l3_node = vlib_get_node_by_name (vm, output_node);
static char *arcs[] = {
"ip4-output",
"ip6-output",
"mpls-output",
"ethernet-output",
};
u8 a;
for (a = 0; a < ARRAY_LEN (arcs); a++)
{
u8 arc = vnet_get_feature_arc_index (arcs[a]);
vnet_feature_modify_end_node (arc, sw_if_index, l3_node->index);
}
}
/* Register an interface instance. */
u32
vnet_register_interface (vnet_main_t * vnm,
u32 dev_class_index,
u32 dev_instance,
u32 hw_class_index, u32 hw_instance)
{
vnet_interface_main_t *im = &vnm->interface_main;
vnet_hw_interface_t *hw;
vnet_device_class_t *dev_class =
vnet_get_device_class (vnm, dev_class_index);
vnet_hw_interface_class_t *hw_class =
vnet_get_hw_interface_class (vnm, hw_class_index);
vlib_main_t *vm = vnm->vlib_main;
vnet_feature_config_main_t *fcm;
vnet_config_main_t *cm;
u32 hw_index, i;
vlib_node_t *if_out_node =
vlib_get_node (vm, vnet_interface_output_node.index);
pool_get (im->hw_interfaces, hw);
clib_memset (hw, 0, sizeof (*hw));
hw->trace_classify_table_index = ~0;
hw_index = hw - im->hw_interfaces;
hw->hw_if_index = hw_index;
hw->default_rx_mode = VNET_HW_IF_RX_MODE_POLLING;
if (hw_class->tx_hash_fn_type == VNET_HASH_FN_TYPE_ETHERNET ||
hw_class->tx_hash_fn_type == VNET_HASH_FN_TYPE_IP)
hw->hf = vnet_hash_default_function (hw_class->tx_hash_fn_type);
if (dev_class->format_device_name)
hw->name = format (0, "%U", dev_class->format_device_name, dev_instance);
else if (hw_class->format_interface_name)
hw->name = format (0, "%U", hw_class->format_interface_name,
dev_instance);
else
hw->name = format (0, "%s%x", hw_class->name, dev_instance);
if (!im->hw_interface_by_name)
im->hw_interface_by_name = hash_create_vec ( /* size */ 0,
sizeof (hw->name[0]),
sizeof (uword));
hash_set_mem (im->hw_interface_by_name, hw->name, hw_index);
/* Make hardware interface point to software interface. */
{
vnet_sw_interface_t sw = {
.type = VNET_SW_INTERFACE_TYPE_HARDWARE,
.flood_class = VNET_FLOOD_CLASS_NORMAL,
.hw_if_index = hw_index
};
hw->sw_if_index = vnet_create_sw_interface_no_callbacks (vnm, &sw);
}
hw->dev_class_index = dev_class_index;
hw->dev_instance = dev_instance;
hw->hw_class_index = hw_class_index;
hw->hw_instance = hw_instance;
hw->max_rate_bits_per_sec = 0;
vnet_sw_interface_set_mtu (vnm, hw->sw_if_index, 0);
if (dev_class->tx_function == 0 && dev_class->tx_fn_registrations == 0)
goto no_output_nodes; /* No output/tx nodes to create */
/* If we have previously deleted interface nodes, re-use them. */
if (vec_len (im->deleted_hw_interface_nodes) > 0)
{
vnet_hw_interface_nodes_t *hn;
vlib_node_t *node;
vlib_node_runtime_t *nrt;
hn = vec_end (im->deleted_hw_interface_nodes) - 1;
hw->tx_node_index = hn->tx_node_index;
hw->output_node_index = hn->output_node_index;
vlib_node_rename (vm, hw->tx_node_index, "%v-tx", hw->name);
vlib_node_rename (vm, hw->output_node_index, "%v-output", hw->name);
foreach_vlib_main ()
{
vnet_interface_output_runtime_t *rt;
rt =
vlib_node_get_runtime_data (this_vlib_main, hw->output_node_index);
ASSERT (rt->is_deleted == 1);
rt->is_deleted = 0;
rt->hw_if_index = hw_index;
rt->sw_if_index = hw->sw_if_index;
rt->dev_instance = hw->dev_instance;
rt = vlib_node_get_runtime_data (this_vlib_main, hw->tx_node_index);
rt->hw_if_index = hw_index;
rt->sw_if_index = hw->sw_if_index;
rt->dev_instance = hw->dev_instance;
}
/* The new class may differ from the old one.
* Functions have to be updated. */
node = vlib_get_node (vm, hw->output_node_index);
node->format_trace = format_vnet_interface_output_trace;
node->node_fn_registrations = if_out_node->node_fn_registrations;
node->function = if_out_node->function;
foreach_vlib_main ()
{
nrt = vlib_node_get_runtime (this_vlib_main, hw->output_node_index);
nrt->function = node->function;
vlib_node_runtime_perf_counter (this_vlib_main, nrt, 0, 0, 0,
VLIB_NODE_RUNTIME_PERF_RESET);
}
node = vlib_get_node (vm, hw->tx_node_index);
if (dev_class->tx_fn_registrations)
{
node->node_fn_registrations = dev_class->tx_fn_registrations;
node->function = vlib_node_get_preferred_node_fn_variant (
vm, dev_class->tx_fn_registrations);
}
else
node->function = dev_class->tx_function;
node->format_trace = dev_class->format_tx_trace;
foreach_vlib_main ()
{
nrt = vlib_node_get_runtime (this_vlib_main, hw->tx_node_index);
nrt->function = node->function;
vlib_node_runtime_perf_counter (this_vlib_main, nrt, 0, 0, 0,
VLIB_NODE_RUNTIME_PERF_RESET);
}
vec_dec_len (im->deleted_hw_interface_nodes, 1);
}
else
{
vlib_node_registration_t r;
vnet_interface_output_runtime_t rt = {
.hw_if_index = hw_index,
.sw_if_index = hw->sw_if_index,
.dev_instance = hw->dev_instance,
.is_deleted = 0,
};
clib_memset (&r, 0, sizeof (r));
r.type = VLIB_NODE_TYPE_INTERNAL;
r.runtime_data = &rt;
r.runtime_data_bytes = sizeof (rt);
r.scalar_size = sizeof (vnet_hw_if_tx_frame_t);
r.vector_size = sizeof (u32);
r.flags = VLIB_NODE_FLAG_IS_OUTPUT;
if (dev_class->tx_fn_registrations)
{
r.function = 0;
r.node_fn_registrations = dev_class->tx_fn_registrations;
}
else
r.function = dev_class->tx_function;
hw->tx_node_index = vlib_register_node (vm, &r, "%v-tx", hw->name);
vlib_node_add_named_next_with_slot (vm, hw->tx_node_index,
"error-drop",
VNET_INTERFACE_TX_NEXT_DROP);
r.flags = 0;
r.format_trace = format_vnet_interface_output_trace;
if (if_out_node->node_fn_registrations)
{
r.function = 0;
r.node_fn_registrations = if_out_node->node_fn_registrations;
}
else
r.function = if_out_node->function;
{
static char *e[] = {
"interface is down",
"interface is deleted",
"no tx queue available",
};
r.n_errors = ARRAY_LEN (e);
r.error_strings = e;
}
hw->output_node_index =
vlib_register_node (vm, &r, "%v-output", hw->name);
vlib_node_add_named_next_with_slot (vm, hw->output_node_index,
"error-drop",
VNET_INTERFACE_OUTPUT_NEXT_DROP);
vlib_node_add_next_with_slot (vm, hw->output_node_index,
hw->tx_node_index,
VNET_INTERFACE_OUTPUT_NEXT_TX);
/* add interface to the list of "output-interface" feature arc start nodes
and clone nexts from 1st interface if it exists */
fcm = vnet_feature_get_config_main (im->output_feature_arc_index);
cm = &fcm->config_main;
i = vec_len (cm->start_node_indices);
vec_validate (cm->start_node_indices, i);
cm->start_node_indices[i] = hw->output_node_index;
if (hw_index)
{
/* copy nexts from 1st interface */
vnet_hw_interface_t *first_hw;
vlib_node_t *first_node;
first_hw = vnet_get_hw_interface (vnm, /* hw_if_index */ 0);
first_node = vlib_get_node (vm, first_hw->output_node_index);
/* 1st 2 nexts are already added above */
for (i = 2; i < vec_len (first_node->next_nodes); i++)
vlib_node_add_next_with_slot (vm, hw->output_node_index,
first_node->next_nodes[i], i);
}
}
hw->if_out_arc_end_node_next_index = vlib_node_add_next (
vm, vnet_interface_output_arc_end_node.index, hw->tx_node_index);
vnet_if_update_lookup_tables (vnm, hw->sw_if_index);
setup_output_node (vm, hw->output_node_index, hw_class);
setup_tx_node (vm, hw->tx_node_index, dev_class);
no_output_nodes:
/* Call all up/down callbacks with zero flags when interface is created. */
vnet_sw_interface_set_flags_helper (vnm, hw->sw_if_index, /* flags */ 0,
VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
vnet_hw_interface_set_flags_helper (vnm, hw_index, /* flags */ 0,
VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
return hw_index;
}
void
vnet_delete_hw_interface (vnet_main_t * vnm, u32 hw_if_index)
{
vnet_interface_main_t *im = &vnm->interface_main;
vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
vlib_main_t *vm = vnm->vlib_main;
vnet_device_class_t *dev_class = vnet_get_device_class (vnm,
hw->dev_class_index);
/* If it is up, mark it down. */
if (hw->flags != 0)
vnet_hw_interface_set_flags (vnm, hw_if_index, /* flags */ 0);
/* Call delete callbacks. */
call_hw_interface_add_del_callbacks (vnm, hw_if_index, /* is_create */ 0);
/* delete rx & tx queues */
vnet_hw_if_unregister_all_rx_queues (vnm, hw_if_index);
vnet_hw_if_unregister_all_tx_queues (vnm, hw_if_index);
vnet_hw_if_update_runtime_data (vnm, hw_if_index);
/* Delete any sub-interfaces. */
{
u32 id, sw_if_index;
hash_foreach (id, sw_if_index, hw->sub_interface_sw_if_index_by_id,
({
vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
u64 sup_and_sub_key =
((u64) (si->sup_sw_if_index) << 32) | (u64) si->sub.id;
hash_unset_mem_free (&im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
vnet_delete_sw_interface (vnm, sw_if_index);
}));
hash_free (hw->sub_interface_sw_if_index_by_id);
}
/* Delete software interface corresponding to hardware interface. */
vnet_delete_sw_interface (vnm, hw->sw_if_index);
if (dev_class->tx_function)
{
/* Put output/tx nodes into recycle pool */
vnet_hw_interface_nodes_t *dn;
foreach_vlib_main ()
{
vnet_interface_output_runtime_t *rt =
vlib_node_get_runtime_data (this_vlib_main, hw->output_node_index);
/* Mark node runtime as deleted so output node (if called)
* will drop packets. */
rt->is_deleted = 1;
}
vlib_node_rename (vm, hw->output_node_index,
"interface-%d-output-deleted", hw_if_index);
vlib_node_rename (vm, hw->tx_node_index, "interface-%d-tx-deleted",
hw_if_index);
vlib_unregister_errors (vm, hw->output_node_index);
vlib_unregister_errors (vm, hw->tx_node_index);
vec_add2 (im->deleted_hw_interface_nodes, dn, 1);
dn->tx_node_index = hw->tx_node_index;
dn->output_node_index = hw->output_node_index;
}
hash_unset_mem (im->hw_interface_by_name, hw->name);
vec_free (hw->name);
vec_free (hw->hw_address);
vec_free (hw->output_node_thread_runtimes);
pool_put (im->hw_interfaces, hw);
}
void
vnet_hw_interface_walk_sw (vnet_main_t * vnm,
u32 hw_if_index,
vnet_hw_sw_interface_walk_t fn, void *ctx)
{
vnet_hw_interface_t *hi;
u32 id, sw_if_index;
hi = vnet_get_hw_interface (vnm, hw_if_index);
/* the super first, then the sub interfaces */
if (WALK_STOP == fn (vnm, hi->sw_if_index, ctx))
return;
hash_foreach (id, sw_if_index,
hi->sub_interface_sw_if_index_by_id,
({
if (WALK_STOP == fn (vnm, sw_if_index, ctx))
break;
}));
}
void
vnet_hw_interface_walk (vnet_main_t * vnm,
vnet_hw_interface_walk_t fn, void *ctx)
{
vnet_interface_main_t *im;
vnet_hw_interface_t *hi;
im = &vnm->interface_main;
pool_foreach (hi, im->hw_interfaces)
{
if (WALK_STOP == fn(vnm, hi->hw_if_index, ctx))
break;
}
}
void
vnet_sw_interface_walk (vnet_main_t * vnm,
vnet_sw_interface_walk_t fn, void *ctx)
{
vnet_interface_main_t *im;
vnet_sw_interface_t *si;
im = &vnm->interface_main;
pool_foreach (si, im->sw_interfaces)
{
if (WALK_STOP == fn (vnm, si, ctx))
break;
}
}
void
vnet_hw_interface_init_for_class (vnet_main_t * vnm, u32 hw_if_index,
u32 hw_class_index, u32 hw_instance)
{
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
vnet_hw_interface_class_t *hc =
vnet_get_hw_interface_class (vnm, hw_class_index);
hi->hw_class_index = hw_class_index;
hi->hw_instance = hw_instance;
setup_output_node (vnm->vlib_main, hi->output_node_index, hc);
}
static clib_error_t *
vnet_hw_interface_set_class_helper (vnet_main_t * vnm, u32 hw_if_index,
u32 hw_class_index, u32 redistribute)
{
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, hi->sw_if_index);
vnet_hw_interface_class_t *old_class =
vnet_get_hw_interface_class (vnm, hi->hw_class_index);
vnet_hw_interface_class_t *new_class =
vnet_get_hw_interface_class (vnm, hw_class_index);
vnet_device_class_t *dev_class =
vnet_get_device_class (vnm, hi->dev_class_index);
clib_error_t *error = 0;
/* New class equals old class? Nothing to do. */
if (hi->hw_class_index == hw_class_index)
return 0;
/* No need (and incorrect since admin up flag may be set) to do error checking when
receiving unserialize message. */
if (redistribute)
{
if (si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
return clib_error_return (0,
"%v must be admin down to change class from %s to %s",
hi->name, old_class->name, new_class->name);
/* Make sure interface supports given class. */
if ((new_class->is_valid_class_for_interface
&& !new_class->is_valid_class_for_interface (vnm, hw_if_index,
hw_class_index))
|| (dev_class->is_valid_class_for_interface
&& !dev_class->is_valid_class_for_interface (vnm, hw_if_index,
hw_class_index)))
return clib_error_return (0,
"%v class cannot be changed from %s to %s",
hi->name, old_class->name, new_class->name);
}
if (old_class->hw_class_change)
old_class->hw_class_change (vnm, hw_if_index, old_class->index,
new_class->index);
vnet_hw_interface_init_for_class (vnm, hw_if_index, new_class->index,
/* instance */ ~0);
if (new_class->hw_class_change)
new_class->hw_class_change (vnm, hw_if_index, old_class->index,
new_class->index);
if (dev_class->hw_class_change)
dev_class->hw_class_change (vnm, hw_if_index, new_class->index);
return error;
}
clib_error_t *
vnet_hw_interface_set_class (vnet_main_t * vnm, u32 hw_if_index,
u32 hw_class_index)
{
return vnet_hw_interface_set_class_helper (vnm, hw_if_index, hw_class_index,
/* redistribute */ 1);
}
static int
vnet_hw_interface_rx_redirect_to_node_helper (vnet_main_t * vnm,
u32 hw_if_index,
u32 node_index,
u32 redistribute)
{
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
vnet_device_class_t *dev_class = vnet_get_device_class
(vnm, hi->dev_class_index);
if (dev_class->rx_redirect_to_node)
{
dev_class->rx_redirect_to_node (vnm, hw_if_index, node_index);
return 0;
}
return VNET_API_ERROR_UNIMPLEMENTED;
}
int
vnet_hw_interface_rx_redirect_to_node (vnet_main_t * vnm, u32 hw_if_index,
u32 node_index)
{
return vnet_hw_interface_rx_redirect_to_node_helper (vnm, hw_if_index,
node_index,
1 /* redistribute */ );
}
word
vnet_sw_interface_compare (vnet_main_t * vnm,
uword sw_if_index0, uword sw_if_index1)
{
vnet_sw_interface_t *sup0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
vnet_sw_interface_t *sup1 = vnet_get_sup_sw_interface (vnm, sw_if_index1);
vnet_hw_interface_t *h0 = vnet_get_hw_interface (vnm, sup0->hw_if_index);
vnet_hw_interface_t *h1 = vnet_get_hw_interface (vnm, sup1->hw_if_index);
if (h0 != h1)
return vec_cmp (h0->name, h1->name);
return (word) h0->hw_instance - (word) h1->hw_instance;
}
word
vnet_hw_interface_compare (vnet_main_t * vnm,
uword hw_if_index0, uword hw_if_index1)
{
vnet_hw_interface_t *h0 = vnet_get_hw_interface (vnm, hw_if_index0);
vnet_hw_interface_t *h1 = vnet_get_hw_interface (vnm, hw_if_index1);
if (h0 != h1)
return vec_cmp (h0->name, h1->name);
return (word) h0->hw_instance - (word) h1->hw_instance;
}
int
vnet_sw_interface_is_p2p (vnet_main_t * vnm, u32 sw_if_index)
{
vnet_sw_interface_t *si = vnet_get_sw_interface_or_null (vnm, sw_if_index);
if (si == NULL)
return -1;
if ((si->type == VNET_SW_INTERFACE_TYPE_P2P) ||
(si->type == VNET_SW_INTERFACE_TYPE_PIPE))
return 1;
vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
vnet_hw_interface_class_t *hc =
vnet_get_hw_interface_class (vnm, hw->hw_class_index);
return (hc->flags & VNET_HW_INTERFACE_CLASS_FLAG_P2P);
}
int
vnet_sw_interface_is_nbma (vnet_main_t * vnm, u32 sw_if_index)
{
vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
vnet_hw_interface_class_t *hc =
vnet_get_hw_interface_class (vnm, hw->hw_class_index);
return (hc->flags & VNET_HW_INTERFACE_CLASS_FLAG_NBMA);
}
clib_error_t *
vnet_sw_interface_supports_addressing (vnet_main_t *vnm, u32 sw_if_index)
{
if (sw_if_index == 0)
{
return clib_error_create (
"local0 interface doesn't support IP addressing");
}
if (vnet_sw_interface_is_sub (vnm, sw_if_index))
{
vnet_sw_interface_t *si;
si = vnet_get_sw_interface_or_null (vnm, sw_if_index);
if (si && si->type == VNET_SW_INTERFACE_TYPE_SUB &&
si->sub.eth.flags.exact_match == 0)
{
return clib_error_create (
"sub-interface without exact-match doesn't support IP addressing");
}
}
return NULL;
}
u32
vnet_register_device_class (vlib_main_t *vm, vnet_device_class_t *c)
{
vnet_main_t *vnm = vnet_get_main ();
vnet_interface_main_t *im = &vnm->interface_main;
c->index = vec_len (im->device_classes);
hash_set_mem (im->device_class_by_name, c->name, c->index);
/* to avoid confusion, please remove ".tx_function" statement
from VNET_DEVICE_CLASS() if using function candidates */
ASSERT (c->tx_fn_registrations == 0 || c->tx_function == 0);
if (c->tx_fn_registrations)
c->tx_function =
vlib_node_get_preferred_node_fn_variant (vm, c->tx_fn_registrations);
vec_add1 (im->device_classes, c[0]);
return c->index;
}
clib_error_t *
vnet_interface_init (vlib_main_t * vm)
{
vnet_main_t *vnm = vnet_get_main ();
vnet_interface_main_t *im = &vnm->interface_main;
vlib_buffer_t *b = 0;
vnet_buffer_opaque_t *o = 0;
clib_error_t *error;
/*
* Keep people from shooting themselves in the foot.
*/
if (sizeof (b->opaque) != sizeof (vnet_buffer_opaque_t))
{
#define _(a) if (sizeof(o->a) > sizeof (o->unused)) \
clib_warning \
("FATAL: size of opaque union subtype %s is %d (max %d)", \
#a, sizeof(o->a), sizeof (o->unused));
foreach_buffer_opaque_union_subtype;
#undef _
return clib_error_return
(0, "FATAL: size of vlib buffer opaque %d, size of vnet opaque %d",
sizeof (b->opaque), sizeof (vnet_buffer_opaque_t));
}
clib_spinlock_init (&im->sw_if_counter_lock);
clib_spinlock_lock (&im->sw_if_counter_lock); /* should be no need */
vec_validate (im->sw_if_counters, VNET_N_SIMPLE_INTERFACE_COUNTER - 1);
#define _(E,n,p) \
im->sw_if_counters[VNET_INTERFACE_COUNTER_##E].name = #n; \
im->sw_if_counters[VNET_INTERFACE_COUNTER_##E].stat_segment_name = "/" #p "/" #n;
foreach_simple_interface_counter_name
#undef _
vec_validate (im->combined_sw_if_counters,
VNET_N_COMBINED_INTERFACE_COUNTER - 1);
#define _(E,n,p) \
im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_##E].name = #n; \
im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_##E].stat_segment_name = "/" #p "/" #n;
foreach_combined_interface_counter_name
#undef _
clib_spinlock_unlock (&im->sw_if_counter_lock);
im->device_class_by_name = hash_create_string ( /* size */ 0,
sizeof (uword));
for (vnet_device_class_t *c = vnm->device_class_registrations; c;
c = c->next_class_registration)
vnet_register_device_class (vm, c);
im->hw_interface_class_by_name = hash_create_string ( /* size */ 0,
sizeof (uword));
im->rxq_index_by_hw_if_index_and_queue_id =
hash_create_mem (0, sizeof (u64), sizeof (u32));
im->txq_index_by_hw_if_index_and_queue_id =
hash_create_mem (0, sizeof (u64), sizeof (u32));
im->sw_if_index_by_sup_and_sub = hash_create_mem (0, sizeof (u64),
sizeof (uword));
{
vnet_hw_interface_class_t *c;
c = vnm->hw_interface_class_registrations;
while (c)
{
c->index = vec_len (im->hw_interface_classes);
hash_set_mem (im->hw_interface_class_by_name, c->name, c->index);
if (NULL == c->build_rewrite)
c->build_rewrite = default_build_rewrite;
if (NULL == c->update_adjacency)
c->update_adjacency = default_update_adjacency;
vec_add1 (im->hw_interface_classes, c[0]);
c = c->next_class_registration;
}
}
/* init per-thread data */
vec_validate_aligned (im->per_thread_data, vlib_num_workers (),
CLIB_CACHE_LINE_BYTES);
if ((error = vlib_call_init_function (vm, vnet_interface_cli_init)))
return error;
vnm->interface_tag_by_sw_if_index = hash_create (0, sizeof (uword));
return 0;
}
VLIB_INIT_FUNCTION (vnet_interface_init);
/* Kludge to renumber interface names [only!] */
int
vnet_interface_name_renumber (u32 sw_if_index, u32 new_show_dev_instance)
{
int rv;
vnet_main_t *vnm = vnet_get_main ();
vnet_interface_main_t *im = &vnm->interface_main;
vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
vnet_device_class_t *dev_class = vnet_get_device_class
(vnm, hi->dev_class_index);
if (dev_class->name_renumber == 0 || dev_class->format_device_name == 0)
return VNET_API_ERROR_UNIMPLEMENTED;
rv = dev_class->name_renumber (hi, new_show_dev_instance);
if (rv)
return rv;
hash_unset_mem (im->hw_interface_by_name, hi->name);
vec_free (hi->name);
/* Use the mapping we set up to call it Ishmael */
hi->name = format (0, "%U", dev_class->format_device_name,
hi->dev_instance);
hash_set_mem (im->hw_interface_by_name, hi->name, hi->hw_if_index);
return rv;
}
clib_error_t *
vnet_rename_interface (vnet_main_t * vnm, u32 hw_if_index, char *new_name)
{
vnet_interface_main_t *im = &vnm->interface_main;
vlib_main_t *vm = vnm->vlib_main;
vnet_hw_interface_t *hw;
u8 *old_name;
clib_error_t *error = 0;
hw = vnet_get_hw_interface (vnm, hw_if_index);
if (!hw)
{
return clib_error_return (0,
"unable to find hw interface for index %u",
hw_if_index);
}
old_name = hw->name;
/* set new hw->name */
hw->name = format (0, "%s", new_name);
/* remove the old name to hw_if_index mapping and install the new one */
hash_unset_mem (im->hw_interface_by_name, old_name);
hash_set_mem (im->hw_interface_by_name, hw->name, hw_if_index);
/* rename tx/output nodes */
vlib_node_rename (vm, hw->tx_node_index, "%v-tx", hw->name);
vlib_node_rename (vm, hw->output_node_index, "%v-output", hw->name);
/* free the old name vector */
vec_free (old_name);
return error;
}
clib_error_t *
vnet_hw_interface_add_del_mac_address (vnet_main_t * vnm,
u32 hw_if_index,
const u8 * mac_address, u8 is_add)
{
clib_error_t *error = 0;
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
vnet_device_class_t *dev_class =
vnet_get_device_class (vnm, hi->dev_class_index);
if (!hi->hw_address)
{
error =
clib_error_return
(0, "Secondary MAC Addresses not supported for interface index %u",
hw_if_index);
goto done;
}
if (dev_class->mac_addr_add_del_function)
error = dev_class->mac_addr_add_del_function (hi, mac_address, is_add);
if (!error)
{
vnet_hw_interface_class_t *hw_class;
hw_class = vnet_get_hw_interface_class (vnm, hi->hw_class_index);
if (NULL != hw_class->mac_addr_add_del_function)
error = hw_class->mac_addr_add_del_function (hi, mac_address, is_add);
}
/* If no errors, add to the list of secondary MACs on the ethernet intf */
if (!error)
ethernet_interface_add_del_address (&ethernet_main, hw_if_index,
mac_address, is_add);
done:
if (error)
log_err ("hw_add_del_mac_address: %U", format_clib_error, error);
return error;
}
static clib_error_t *
vnet_hw_interface_change_mac_address_helper (vnet_main_t * vnm,
u32 hw_if_index,
const u8 * mac_address)
{
clib_error_t *error = 0;
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
if (hi->hw_address)
{
u8 *old_address = vec_dup (hi->hw_address);
vnet_device_class_t *dev_class =
vnet_get_device_class (vnm, hi->dev_class_index);
if (dev_class->mac_addr_change_function)
{
error =
dev_class->mac_addr_change_function (hi, old_address,
mac_address);
}
if (!error)
{
vnet_hw_interface_class_t *hw_class;
hw_class = vnet_get_hw_interface_class (vnm, hi->hw_class_index);
if (NULL != hw_class->mac_addr_change_function)
hw_class->mac_addr_change_function (hi, old_address, mac_address);
}
else
{
error =
clib_error_return (0,
"MAC Address Change is not supported on this interface");
}
vec_free (old_address);
}
else
{
error =
clib_error_return (0,
"mac address change is not supported for interface index %u",
hw_if_index);
}
return error;
}
clib_error_t *
vnet_hw_interface_change_mac_address (vnet_main_t * vnm, u32 hw_if_index,
const u8 * mac_address)
{
return vnet_hw_interface_change_mac_address_helper
(vnm, hw_if_index, mac_address);
}
static int
vnet_sw_interface_check_table_same (u32 unnumbered_sw_if_index,
u32 ip_sw_if_index)
{
if (ip4_main.fib_index_by_sw_if_index[unnumbered_sw_if_index] !=
ip4_main.fib_index_by_sw_if_index[ip_sw_if_index])
return VNET_API_ERROR_UNEXPECTED_INTF_STATE;
if (ip4_main.mfib_index_by_sw_if_index[unnumbered_sw_if_index] !=
ip4_main.mfib_index_by_sw_if_index[ip_sw_if_index])
return VNET_API_ERROR_UNEXPECTED_INTF_STATE;
if (ip6_main.fib_index_by_sw_if_index[unnumbered_sw_if_index] !=
ip6_main.fib_index_by_sw_if_index[ip_sw_if_index])
return VNET_API_ERROR_UNEXPECTED_INTF_STATE;
if (ip6_main.mfib_index_by_sw_if_index[unnumbered_sw_if_index] !=
ip6_main.mfib_index_by_sw_if_index[ip_sw_if_index])
return VNET_API_ERROR_UNEXPECTED_INTF_STATE;
return 0;
}
/* update the unnumbered state of an interface*/
int
vnet_sw_interface_update_unnumbered (u32 unnumbered_sw_if_index,
u32 ip_sw_if_index, u8 enable)
{
vnet_main_t *vnm = vnet_get_main ();
vnet_sw_interface_t *si;
u32 was_unnum;
int rv = 0;
si = vnet_get_sw_interface (vnm, unnumbered_sw_if_index);
was_unnum = (si->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED);
if (enable)
{
rv = vnet_sw_interface_check_table_same (unnumbered_sw_if_index,
ip_sw_if_index);
if (rv != 0)
return rv;
si->flags |= VNET_SW_INTERFACE_FLAG_UNNUMBERED;
si->unnumbered_sw_if_index = ip_sw_if_index;
ip4_main.lookup_main.if_address_pool_index_by_sw_if_index
[unnumbered_sw_if_index] =
ip4_main.
lookup_main.if_address_pool_index_by_sw_if_index[ip_sw_if_index];
ip6_main.
lookup_main.if_address_pool_index_by_sw_if_index
[unnumbered_sw_if_index] =
ip6_main.
lookup_main.if_address_pool_index_by_sw_if_index[ip_sw_if_index];
}
else
{
/*
* Unless the interface is actually unnumbered, don't
* smash e.g. if_address_pool_index_by_sw_if_index
*/
if (si->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
{
si->flags &= ~(VNET_SW_INTERFACE_FLAG_UNNUMBERED);
si->unnumbered_sw_if_index = (u32) ~0;
ip4_main.lookup_main
.if_address_pool_index_by_sw_if_index[unnumbered_sw_if_index] = ~0;
ip6_main.lookup_main
.if_address_pool_index_by_sw_if_index[unnumbered_sw_if_index] = ~0;
}
}
if (was_unnum != (si->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED))
{
ip4_sw_interface_enable_disable (unnumbered_sw_if_index, enable);
ip6_sw_interface_enable_disable (unnumbered_sw_if_index, enable);
}
return 0;
}
vnet_l3_packet_type_t
vnet_link_to_l3_proto (vnet_link_t link)
{
switch (link)
{
case VNET_LINK_IP4:
return (VNET_L3_PACKET_TYPE_IP4);
case VNET_LINK_IP6:
return (VNET_L3_PACKET_TYPE_IP6);
case VNET_LINK_MPLS:
return (VNET_L3_PACKET_TYPE_MPLS);
case VNET_LINK_ARP:
return (VNET_L3_PACKET_TYPE_ARP);
case VNET_LINK_ETHERNET:
case VNET_LINK_NSH:
ASSERT (0);
break;
}
ASSERT (0);
return (0);
}
vnet_mtu_t
vnet_link_to_mtu (vnet_link_t link)
{
switch (link)
{
case VNET_LINK_IP4:
return (VNET_MTU_IP4);
case VNET_LINK_IP6:
return (VNET_MTU_IP6);
case VNET_LINK_MPLS:
return (VNET_MTU_MPLS);
default:
return (VNET_MTU_L3);
}
}
u8 *
default_build_rewrite (vnet_main_t * vnm,
u32 sw_if_index,
vnet_link_t link_type, const void *dst_address)
{
return (NULL);
}
void
default_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
{
ip_adjacency_t *adj;
adj = adj_get (ai);
switch (adj->lookup_next_index)
{
case IP_LOOKUP_NEXT_GLEAN:
adj_glean_update_rewrite (ai);
break;
case IP_LOOKUP_NEXT_ARP:
case IP_LOOKUP_NEXT_BCAST:
/*
* default rewrite in neighbour adj
*/
adj_nbr_update_rewrite
(ai,
ADJ_NBR_REWRITE_FLAG_COMPLETE,
vnet_build_rewrite_for_sw_interface (vnm,
sw_if_index,
adj_get_link_type (ai), NULL));
break;
case IP_LOOKUP_NEXT_MCAST:
/*
* mcast traffic also uses default rewrite string with no mcast
* switch time updates.
*/
adj_mcast_update_rewrite
(ai,
vnet_build_rewrite_for_sw_interface (vnm,
sw_if_index,
adj_get_link_type (ai),
NULL), 0);
break;
case IP_LOOKUP_NEXT_DROP:
case IP_LOOKUP_NEXT_PUNT:
case IP_LOOKUP_NEXT_LOCAL:
case IP_LOOKUP_NEXT_REWRITE:
case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
case IP_LOOKUP_NEXT_MIDCHAIN:
case IP_LOOKUP_NEXT_ICMP_ERROR:
case IP_LOOKUP_N_NEXT:
ASSERT (0);
break;
}
}
clib_error_t *
vnet_hw_interface_set_rss_queues (vnet_main_t * vnm,
vnet_hw_interface_t * hi,
clib_bitmap_t * bitmap)
{
clib_error_t *error = 0;
vnet_device_class_t *dev_class =
vnet_get_device_class (vnm, hi->dev_class_index);
if (dev_class->set_rss_queues_function)
{
if (clib_bitmap_count_set_bits (bitmap) == 0)
{
error = clib_error_return (0,
"must assign at least one valid rss queue");
goto done;
}
error = dev_class->set_rss_queues_function (vnm, hi, bitmap);
}
else
{
error = clib_error_return (0,
"setting rss queues is not supported on this interface");
}
if (!error)
{
clib_bitmap_free (hi->rss_queues);
hi->rss_queues = clib_bitmap_dup (bitmap);
}
done:
if (error)
log_err ("hw_set_rss_queues: %U", format_clib_error, error);
return error;
}
int collect_detailed_interface_stats_flag = 0;
void
collect_detailed_interface_stats_flag_set (void)
{
collect_detailed_interface_stats_flag = 1;
}
void
collect_detailed_interface_stats_flag_clear (void)
{
collect_detailed_interface_stats_flag = 0;
}
static clib_error_t *
collect_detailed_interface_stats_cli (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
clib_error_t *error = NULL;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
return clib_error_return (0, "expected enable | disable");
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (line_input, "enable") || unformat (line_input, "on"))
collect_detailed_interface_stats_flag_set ();
else if (unformat (line_input, "disable")
|| unformat (line_input, "off"))
collect_detailed_interface_stats_flag_clear ();
else
{
error = clib_error_return (0, "unknown input `%U'",
format_unformat_error, line_input);
goto done;
}
}
done:
unformat_free (line_input);
return error;
}
VLIB_CLI_COMMAND (collect_detailed_interface_stats_command, static) = {
.path = "interface collect detailed-stats",
.short_help = "interface collect detailed-stats <enable|disable>",
.function = collect_detailed_interface_stats_cli,
};
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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