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|
/*
*------------------------------------------------------------------
* interface_api.c - vnet interface api
*
* Copyright (c) 2016 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 <vnet/vnet.h>
#include <vlibmemory/api.h>
#include <vnet/interface.h>
#include <vnet/api_errno.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/ip/ip.h>
#include <vnet/fib/fib_table.h>
#include <vnet/l2/l2_vtr.h>
#include <vnet/vnet_msg_enum.h>
#define vl_typedefs /* define message structures */
#include <vnet/vnet_all_api_h.h>
#undef vl_typedefs
#define vl_endianfun /* define message structures */
#include <vnet/vnet_all_api_h.h>
#undef vl_endianfun
/* instantiate all the print functions we know about */
#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
#define vl_printfun
#include <vnet/vnet_all_api_h.h>
#undef vl_printfun
#include <vlibapi/api_helper_macros.h>
#define foreach_vpe_api_msg \
_(SW_INTERFACE_SET_FLAGS, sw_interface_set_flags) \
_(SW_INTERFACE_SET_MTU, sw_interface_set_mtu) \
_(WANT_INTERFACE_EVENTS, want_interface_events) \
_(SW_INTERFACE_DUMP, sw_interface_dump) \
_(SW_INTERFACE_DETAILS, sw_interface_details) \
_(SW_INTERFACE_ADD_DEL_ADDRESS, sw_interface_add_del_address) \
_(SW_INTERFACE_SET_TABLE, sw_interface_set_table) \
_(SW_INTERFACE_SET_UNNUMBERED, sw_interface_set_unnumbered) \
_(SW_INTERFACE_CLEAR_STATS, sw_interface_clear_stats) \
_(SW_INTERFACE_TAG_ADD_DEL, sw_interface_tag_add_del)
static void
vl_api_sw_interface_set_flags_t_handler (vl_api_sw_interface_set_flags_t * mp)
{
vl_api_sw_interface_set_flags_reply_t *rmp;
vnet_main_t *vnm = vnet_get_main ();
int rv = 0;
clib_error_t *error;
u16 flags;
VALIDATE_SW_IF_INDEX (mp);
flags = mp->admin_up_down ? VNET_SW_INTERFACE_FLAG_ADMIN_UP : 0;
error = vnet_sw_interface_set_flags (vnm, ntohl (mp->sw_if_index), flags);
if (error)
{
rv = -1;
clib_error_report (error);
}
BAD_SW_IF_INDEX_LABEL;
REPLY_MACRO (VL_API_SW_INTERFACE_SET_FLAGS_REPLY);
}
static void
vl_api_sw_interface_set_mtu_t_handler (vl_api_sw_interface_set_mtu_t * mp)
{
vl_api_sw_interface_set_mtu_reply_t *rmp;
vnet_main_t *vnm = vnet_get_main ();
u32 flags = ETHERNET_INTERFACE_FLAG_MTU;
u32 sw_if_index = ntohl (mp->sw_if_index);
u16 mtu = ntohs (mp->mtu);
ethernet_main_t *em = ðernet_main;
int rv = 0;
VALIDATE_SW_IF_INDEX (mp);
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, sw_if_index);
ethernet_interface_t *eif = ethernet_get_interface (em, sw_if_index);
if (!eif)
{
rv = VNET_API_ERROR_FEATURE_DISABLED;
goto bad_sw_if_index;
}
if (mtu < hi->min_supported_packet_bytes)
{
rv = VNET_API_ERROR_INVALID_VALUE;
goto bad_sw_if_index;
}
if (mtu > hi->max_supported_packet_bytes)
{
rv = VNET_API_ERROR_INVALID_VALUE;
goto bad_sw_if_index;
}
if (hi->max_packet_bytes != mtu)
{
hi->max_packet_bytes = mtu;
ethernet_set_flags (vnm, sw_if_index, flags);
}
BAD_SW_IF_INDEX_LABEL;
REPLY_MACRO (VL_API_SW_INTERFACE_SET_MTU_REPLY);
}
static void
send_sw_interface_details (vpe_api_main_t * am,
unix_shared_memory_queue_t * q,
vnet_sw_interface_t * swif,
u8 * interface_name, u32 context)
{
vl_api_sw_interface_details_t *mp;
vnet_main_t *vnm = vnet_get_main ();
vnet_hw_interface_t *hi;
u8 *tag;
hi = vnet_get_sup_hw_interface (am->vnet_main, swif->sw_if_index);
mp = vl_msg_api_alloc (sizeof (*mp));
memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_DETAILS);
mp->sw_if_index = ntohl (swif->sw_if_index);
mp->sup_sw_if_index = ntohl (swif->sup_sw_if_index);
mp->admin_up_down = (swif->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? 1 : 0;
mp->link_up_down = (hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP) ? 1 : 0;
mp->link_duplex = ((hi->flags & VNET_HW_INTERFACE_FLAG_DUPLEX_MASK) >>
VNET_HW_INTERFACE_FLAG_DUPLEX_SHIFT);
mp->link_speed = ((hi->flags & VNET_HW_INTERFACE_FLAG_SPEED_MASK) >>
VNET_HW_INTERFACE_FLAG_SPEED_SHIFT);
mp->link_mtu = ntohs (hi->max_packet_bytes);
mp->context = context;
strncpy ((char *) mp->interface_name,
(char *) interface_name, ARRAY_LEN (mp->interface_name) - 1);
/* Send the L2 address for ethernet physical intfcs */
if (swif->sup_sw_if_index == swif->sw_if_index
&& hi->hw_class_index == ethernet_hw_interface_class.index)
{
ethernet_main_t *em = ethernet_get_main (am->vlib_main);
ethernet_interface_t *ei;
ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
ASSERT (sizeof (mp->l2_address) >= sizeof (ei->address));
clib_memcpy (mp->l2_address, ei->address, sizeof (ei->address));
mp->l2_address_length = ntohl (sizeof (ei->address));
}
else if (swif->sup_sw_if_index != swif->sw_if_index)
{
vnet_sub_interface_t *sub = &swif->sub;
mp->sub_id = ntohl (sub->id);
mp->sub_dot1ad = sub->eth.flags.dot1ad;
mp->sub_number_of_tags =
sub->eth.flags.one_tag + sub->eth.flags.two_tags * 2;
mp->sub_outer_vlan_id = ntohs (sub->eth.outer_vlan_id);
mp->sub_inner_vlan_id = ntohs (sub->eth.inner_vlan_id);
mp->sub_exact_match = sub->eth.flags.exact_match;
mp->sub_default = sub->eth.flags.default_sub;
mp->sub_outer_vlan_id_any = sub->eth.flags.outer_vlan_id_any;
mp->sub_inner_vlan_id_any = sub->eth.flags.inner_vlan_id_any;
/* vlan tag rewrite data */
u32 vtr_op = L2_VTR_DISABLED;
u32 vtr_push_dot1q = 0, vtr_tag1 = 0, vtr_tag2 = 0;
if (l2vtr_get (am->vlib_main, am->vnet_main, swif->sw_if_index,
&vtr_op, &vtr_push_dot1q, &vtr_tag1, &vtr_tag2) != 0)
{
// error - default to disabled
mp->vtr_op = ntohl (L2_VTR_DISABLED);
clib_warning ("cannot get vlan tag rewrite for sw_if_index %d",
swif->sw_if_index);
}
else
{
mp->vtr_op = ntohl (vtr_op);
mp->vtr_push_dot1q = ntohl (vtr_push_dot1q);
mp->vtr_tag1 = ntohl (vtr_tag1);
mp->vtr_tag2 = ntohl (vtr_tag2);
}
}
tag = vnet_get_sw_interface_tag (vnm, swif->sw_if_index);
if (tag)
strncpy ((char *) mp->tag, (char *) tag, ARRAY_LEN (mp->tag) - 1);
vl_msg_api_send_shmem (q, (u8 *) & mp);
}
static void
vl_api_sw_interface_dump_t_handler (vl_api_sw_interface_dump_t * mp)
{
vpe_api_main_t *am = &vpe_api_main;
vnet_sw_interface_t *swif;
vnet_interface_main_t *im = &am->vnet_main->interface_main;
u8 *filter_string = 0, *name_string = 0;
unix_shared_memory_queue_t *q;
char *strcasestr (char *, char *); /* lnx hdr file botch */
q = vl_api_client_index_to_input_queue (mp->client_index);
if (q == 0)
return;
if (mp->name_filter_valid)
{
mp->name_filter[ARRAY_LEN (mp->name_filter) - 1] = 0;
filter_string = format (0, "%s%c", mp->name_filter, 0);
}
/* *INDENT-OFF* */
pool_foreach (swif, im->sw_interfaces,
({
name_string = format (name_string, "%U%c",
format_vnet_sw_interface_name,
am->vnet_main, swif, 0);
if (mp->name_filter_valid == 0 ||
strcasestr((char *) name_string, (char *) filter_string)) {
send_sw_interface_details (am, q, swif, name_string, mp->context);
}
_vec_len (name_string) = 0;
}));
/* *INDENT-ON* */
vec_free (name_string);
vec_free (filter_string);
}
static void
vl_api_sw_interface_add_del_address_t_handler
(vl_api_sw_interface_add_del_address_t * mp)
{
vlib_main_t *vm = vlib_get_main ();
vl_api_sw_interface_add_del_address_reply_t *rmp;
int rv = 0;
u32 is_del;
VALIDATE_SW_IF_INDEX (mp);
is_del = mp->is_add == 0;
if (mp->del_all)
ip_del_all_interface_addresses (vm, ntohl (mp->sw_if_index));
else if (mp->is_ipv6)
ip6_add_del_interface_address (vm, ntohl (mp->sw_if_index),
(void *) mp->address,
mp->address_length, is_del);
else
ip4_add_del_interface_address (vm, ntohl (mp->sw_if_index),
(void *) mp->address,
mp->address_length, is_del);
BAD_SW_IF_INDEX_LABEL;
REPLY_MACRO (VL_API_SW_INTERFACE_ADD_DEL_ADDRESS_REPLY);
}
void stats_dslock_with_hint (int hint, int tag) __attribute__ ((weak));
void
stats_dslock_with_hint (int hint, int tag)
{
}
void stats_dsunlock (void) __attribute__ ((weak));
void
stats_dsunlock (void)
{
}
static void
vl_api_sw_interface_set_table_t_handler (vl_api_sw_interface_set_table_t * mp)
{
int rv = 0;
u32 table_id = ntohl (mp->vrf_id);
u32 sw_if_index = ntohl (mp->sw_if_index);
vl_api_sw_interface_set_table_reply_t *rmp;
u32 fib_index;
VALIDATE_SW_IF_INDEX (mp);
stats_dslock_with_hint (1 /* release hint */ , 4 /* tag */ );
if (mp->is_ipv6)
{
fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6,
table_id);
vec_validate (ip6_main.fib_index_by_sw_if_index, sw_if_index);
ip6_main.fib_index_by_sw_if_index[sw_if_index] = fib_index;
}
else
{
fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
table_id);
vec_validate (ip4_main.fib_index_by_sw_if_index, sw_if_index);
ip4_main.fib_index_by_sw_if_index[sw_if_index] = fib_index;
}
stats_dsunlock ();
BAD_SW_IF_INDEX_LABEL;
REPLY_MACRO (VL_API_SW_INTERFACE_SET_TABLE_REPLY);
}
static void vl_api_sw_interface_set_unnumbered_t_handler
(vl_api_sw_interface_set_unnumbered_t * mp)
{
vl_api_sw_interface_set_unnumbered_reply_t *rmp;
int rv = 0;
vnet_sw_interface_t *si;
vnet_main_t *vnm = vnet_get_main ();
u32 sw_if_index, unnumbered_sw_if_index;
sw_if_index = ntohl (mp->sw_if_index);
unnumbered_sw_if_index = ntohl (mp->unnumbered_sw_if_index);
/*
* The API message field names are backwards from
* the underlying data structure names.
* It's not worth changing them now.
*/
if (pool_is_free_index (vnm->interface_main.sw_interfaces,
unnumbered_sw_if_index))
{
rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
goto done;
}
/* Only check the "use loop0" field when setting the binding */
if (mp->is_add &&
pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
{
rv = VNET_API_ERROR_INVALID_SW_IF_INDEX_2;
goto done;
}
si = vnet_get_sw_interface (vnm, unnumbered_sw_if_index);
if (mp->is_add)
{
si->flags |= VNET_SW_INTERFACE_FLAG_UNNUMBERED;
si->unnumbered_sw_if_index = sw_if_index;
ip4_sw_interface_enable_disable (unnumbered_sw_if_index, 1);
ip6_sw_interface_enable_disable (unnumbered_sw_if_index, 1);
}
else
{
si->flags &= ~(VNET_SW_INTERFACE_FLAG_UNNUMBERED);
si->unnumbered_sw_if_index = (u32) ~ 0;
ip4_sw_interface_enable_disable (unnumbered_sw_if_index, 0);
ip6_sw_interface_enable_disable (unnumbered_sw_if_index, 0);
}
done:
REPLY_MACRO (VL_API_SW_INTERFACE_SET_UNNUMBERED_REPLY);
}
static void
vl_api_sw_interface_clear_stats_t_handler (vl_api_sw_interface_clear_stats_t *
mp)
{
vl_api_sw_interface_clear_stats_reply_t *rmp;
vnet_main_t *vnm = vnet_get_main ();
vnet_interface_main_t *im = &vnm->interface_main;
vlib_simple_counter_main_t *sm;
vlib_combined_counter_main_t *cm;
static vnet_main_t **my_vnet_mains;
int i, j, n_counters;
int rv = 0;
if (mp->sw_if_index != ~0)
VALIDATE_SW_IF_INDEX (mp);
vec_reset_length (my_vnet_mains);
for (i = 0; i < vec_len (vnet_mains); i++)
{
if (vnet_mains[i])
vec_add1 (my_vnet_mains, vnet_mains[i]);
}
if (vec_len (vnet_mains) == 0)
vec_add1 (my_vnet_mains, vnm);
n_counters = vec_len (im->combined_sw_if_counters);
for (j = 0; j < n_counters; j++)
{
for (i = 0; i < vec_len (my_vnet_mains); i++)
{
im = &my_vnet_mains[i]->interface_main;
cm = im->combined_sw_if_counters + j;
if (mp->sw_if_index == (u32) ~ 0)
vlib_clear_combined_counters (cm);
else
vlib_zero_combined_counter (cm, ntohl (mp->sw_if_index));
}
}
n_counters = vec_len (im->sw_if_counters);
for (j = 0; j < n_counters; j++)
{
for (i = 0; i < vec_len (my_vnet_mains); i++)
{
im = &my_vnet_mains[i]->interface_main;
sm = im->sw_if_counters + j;
if (mp->sw_if_index == (u32) ~ 0)
vlib_clear_simple_counters (sm);
else
vlib_zero_simple_counter (sm, ntohl (mp->sw_if_index));
}
}
BAD_SW_IF_INDEX_LABEL;
REPLY_MACRO (VL_API_SW_INTERFACE_CLEAR_STATS_REPLY);
}
#define API_LINK_STATE_EVENT 1
#define API_ADMIN_UP_DOWN_EVENT 2
static int
event_data_cmp (void *a1, void *a2)
{
uword *e1 = a1;
uword *e2 = a2;
return (word) e1[0] - (word) e2[0];
}
static void
send_sw_interface_flags (vpe_api_main_t * am,
unix_shared_memory_queue_t * q,
vnet_sw_interface_t * swif)
{
vl_api_sw_interface_set_flags_t *mp;
vnet_main_t *vnm = am->vnet_main;
vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm,
swif->sw_if_index);
mp = vl_msg_api_alloc (sizeof (*mp));
memset (mp, 0, sizeof (*mp));
mp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_SET_FLAGS);
mp->sw_if_index = ntohl (swif->sw_if_index);
mp->admin_up_down = (swif->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? 1 : 0;
mp->link_up_down = (hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP) ? 1 : 0;
vl_msg_api_send_shmem (q, (u8 *) & mp);
}
static uword
link_state_process (vlib_main_t * vm,
vlib_node_runtime_t * rt, vlib_frame_t * f)
{
vpe_api_main_t *vam = &vpe_api_main;
vnet_main_t *vnm = vam->vnet_main;
vnet_sw_interface_t *swif;
uword *event_data = 0;
vpe_client_registration_t *reg;
int i;
u32 prev_sw_if_index;
unix_shared_memory_queue_t *q;
vam->link_state_process_up = 1;
while (1)
{
vlib_process_wait_for_event (vm);
/* Unified list of changed link or admin state sw_if_indices */
vlib_process_get_events_with_type
(vm, &event_data, API_LINK_STATE_EVENT);
vlib_process_get_events_with_type
(vm, &event_data, API_ADMIN_UP_DOWN_EVENT);
/* Sort, so we can eliminate duplicates */
vec_sort_with_function (event_data, event_data_cmp);
prev_sw_if_index = ~0;
for (i = 0; i < vec_len (event_data); i++)
{
/* Only one message per swif */
if (prev_sw_if_index == event_data[i])
continue;
prev_sw_if_index = event_data[i];
/* *INDENT-OFF* */
pool_foreach(reg, vam->interface_events_registrations,
({
q = vl_api_client_index_to_input_queue (reg->client_index);
if (q)
{
/* sw_interface may be deleted already */
if (!pool_is_free_index (vnm->interface_main.sw_interfaces,
event_data[i]))
{
swif = vnet_get_sw_interface (vnm, event_data[i]);
send_sw_interface_flags (vam, q, swif);
}
}
}));
/* *INDENT-ON* */
}
vec_reset_length (event_data);
}
return 0;
}
static clib_error_t *link_up_down_function (vnet_main_t * vm, u32 hw_if_index,
u32 flags);
static clib_error_t *admin_up_down_function (vnet_main_t * vm,
u32 hw_if_index, u32 flags);
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (link_state_process_node,static) = {
.function = link_state_process,
.type = VLIB_NODE_TYPE_PROCESS,
.name = "vpe-link-state-process",
};
/* *INDENT-ON* */
VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (admin_up_down_function);
VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION (link_up_down_function);
static clib_error_t *
link_up_down_function (vnet_main_t * vm, u32 hw_if_index, u32 flags)
{
vpe_api_main_t *vam = &vpe_api_main;
vnet_hw_interface_t *hi = vnet_get_hw_interface (vm, hw_if_index);
if (vam->link_state_process_up)
vlib_process_signal_event (vam->vlib_main,
link_state_process_node.index,
API_LINK_STATE_EVENT, hi->sw_if_index);
return 0;
}
static clib_error_t *
admin_up_down_function (vnet_main_t * vm, u32 sw_if_index, u32 flags)
{
vpe_api_main_t *vam = &vpe_api_main;
/*
* Note: it's perfectly fair to set a subif admin up / admin down.
* Note the subtle distinction between this routine and the previous
* routine.
*/
if (vam->link_state_process_up)
vlib_process_signal_event (vam->vlib_main,
link_state_process_node.index,
API_ADMIN_UP_DOWN_EVENT, sw_if_index);
return 0;
}
static void vl_api_sw_interface_tag_add_del_t_handler
(vl_api_sw_interface_tag_add_del_t * mp)
{
vnet_main_t *vnm = vnet_get_main ();
vl_api_sw_interface_tag_add_del_reply_t *rmp;
int rv = 0;
u8 *tag;
u32 sw_if_index = ntohl (mp->sw_if_index);
VALIDATE_SW_IF_INDEX (mp);
if (mp->is_add)
{
if (mp->tag[0] == 0)
{
rv = VNET_API_ERROR_INVALID_VALUE;
goto out;
}
mp->tag[ARRAY_LEN (mp->tag) - 1] = 0;
tag = format (0, "%s%c", mp->tag, 0);
vnet_set_sw_interface_tag (vnm, tag, sw_if_index);
}
else
vnet_clear_sw_interface_tag (vnm, sw_if_index);
BAD_SW_IF_INDEX_LABEL;
out:
REPLY_MACRO (VL_API_SW_INTERFACE_TAG_ADD_DEL_REPLY);
}
static void
vl_api_sw_interface_details_t_handler (vl_api_sw_interface_details_t * mp)
{
clib_warning ("BUG");
}
/*
* vpe_api_hookup
* Add vpe's API message handlers to the table.
* vlib has alread mapped shared memory and
* added the client registration handlers.
* See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
*/
#define vl_msg_name_crc_list
#include <vnet/vnet_all_api_h.h>
#undef vl_msg_name_crc_list
static void
setup_message_id_table (api_main_t * am)
{
#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
foreach_vl_msg_name_crc_interface;
#undef _
}
pub_sub_handler (interface_events, INTERFACE_EVENTS);
static clib_error_t *
interface_api_hookup (vlib_main_t * vm)
{
api_main_t *am = &api_main;
#define _(N,n) \
vl_msg_api_set_handlers(VL_API_##N, #n, \
vl_api_##n##_t_handler, \
vl_noop_handler, \
vl_api_##n##_t_endian, \
vl_api_##n##_t_print, \
sizeof(vl_api_##n##_t), 1);
foreach_vpe_api_msg;
#undef _
/*
* Set up the (msg_name, crc, message-id) table
*/
setup_message_id_table (am);
return 0;
}
VLIB_API_INIT_FUNCTION (interface_api_hookup);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|