diff options
Diffstat (limited to 'src/vnet/interface.c')
| -rw-r--r-- | src/vnet/interface.c | 1398 |
1 files changed, 1398 insertions, 0 deletions
diff --git a/src/vnet/interface.c b/src/vnet/interface.c new file mode 100644 index 00000000000..78610ed460b --- /dev/null +++ b/src/vnet/interface.c @@ -0,0 +1,1398 @@ +/* + * 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/fib/ip6_fib.h> +#include <vnet/adj/adj.h> + +#define VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE (1 << 0) +#define VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE (1 << 1) + +static clib_error_t *vnet_hw_interface_set_flags_helper (vnet_main_t * vnm, + u32 hw_if_index, + u32 flags, + u32 helper_flags); + +static clib_error_t *vnet_sw_interface_set_flags_helper (vnet_main_t * vnm, + u32 sw_if_index, + u32 flags, + u32 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 void +serialize_vnet_sw_hw_interface_set_flags (serialize_main_t * m, va_list * va) +{ + vnet_sw_hw_interface_state_t *s = + va_arg (*va, vnet_sw_hw_interface_state_t *); + serialize (m, serialize_vec_vnet_sw_hw_interface_state, s, 1); +} + +static void +unserialize_vnet_sw_interface_set_flags (serialize_main_t * m, va_list * va) +{ + CLIB_UNUSED (mc_main_t * mc) = va_arg (*va, mc_main_t *); + vnet_sw_hw_interface_state_t s; + + unserialize (m, unserialize_vec_vnet_sw_hw_interface_state, &s, 1); + + vnet_sw_interface_set_flags_helper + (vnet_get_main (), s.sw_hw_if_index, s.flags, + /* helper_flags no redistribution */ 0); +} + +static void +unserialize_vnet_hw_interface_set_flags (serialize_main_t * m, va_list * va) +{ + CLIB_UNUSED (mc_main_t * mc) = va_arg (*va, mc_main_t *); + vnet_sw_hw_interface_state_t s; + + unserialize (m, unserialize_vec_vnet_sw_hw_interface_state, &s, 1); + + vnet_hw_interface_set_flags_helper + (vnet_get_main (), s.sw_hw_if_index, s.flags, + /* helper_flags no redistribution */ 0); +} + +MC_SERIALIZE_MSG (vnet_sw_interface_set_flags_msg, static) = +{ +.name = "vnet_sw_interface_set_flags",.serialize = + serialize_vnet_sw_hw_interface_set_flags,.unserialize = + unserialize_vnet_sw_interface_set_flags,}; + +MC_SERIALIZE_MSG (vnet_hw_interface_set_flags_msg, static) = +{ +.name = "vnet_hw_interface_set_flags",.serialize = + serialize_vnet_sw_hw_interface_set_flags,.unserialize = + unserialize_vnet_hw_interface_set_flags,}; + +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. */ + /* *INDENT-OFF* */ + 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); + })); + /* *INDENT-ON* */ + + /* Send sw/hw interface state when non-zero. */ + /* *INDENT-OFF* */ + 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; + } + })); + /* *INDENT-ON* */ + + vec_serialize (m, sts, serialize_vec_vnet_sw_hw_interface_state); + + if (sts) + _vec_len (sts) = 0; + + /* *INDENT-OFF* */ + 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 = hif->flags; + } + })); + /* *INDENT-ON* */ + + vec_serialize (m, sts, serialize_vec_vnet_sw_hw_interface_state); + + vec_free (sts); +} + +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; + + /* *INDENT-OFF* */ + pool_foreach (hif, im->hw_interfaces, ({ + unserialize_cstring (m, &class_name); + p = hash_get_mem (im->hw_interface_class_by_name, class_name); + ASSERT (p != 0); + error = vnet_hw_interface_set_class_helper (vnm, hif->hw_if_index, p[0], /* redistribute */ 0); + if (error) + clib_error_report (error); + vec_free (class_name); + })); + /* *INDENT-ON* */ + } + + 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, 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); +} + +#define VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE (1 << 0) +#define VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE (1 << 1) + +static clib_error_t * +vnet_hw_interface_set_flags_helper (vnet_main_t * vnm, u32 hw_if_index, + u32 flags, u32 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); + vnet_device_class_t *dev_class = + vnet_get_device_class (vnm, hi->dev_class_index); + vlib_main_t *vm = vnm->vlib_main; + 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 | + VNET_HW_INTERFACE_FLAG_SPEED_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; + + /* Some interface classes do not redistribute (e.g. are local). */ + if (!dev_class->redistribute) + helper_flags &= ~VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE; + + if (vm->mc_main + && (helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE)) + { + vnet_sw_hw_interface_state_t s; + s.sw_hw_if_index = hw_if_index; + s.flags = flags; + mc_serialize (vm->mc_main, &vnet_hw_interface_set_flags_msg, &s); + } + + 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: + return error; +} + +static clib_error_t * +vnet_sw_interface_set_flags_helper (vnet_main_t * vnm, u32 sw_if_index, + u32 flags, u32 helper_flags) +{ + vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index); + vlib_main_t *vm = vnm->vlib_main; + 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; + } + } + + /* Donot change state for slave link of bonded interfaces */ + if (si->flags & VNET_SW_INTERFACE_FLAG_BOND_SLAVE) + { + error = clib_error_return + (0, "not allowed as %U belong to a BondEthernet interface", + format_vnet_sw_interface_name, vnm, si); + 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; + } + + if (vm->mc_main + && (helper_flags & + VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE)) + { + vnet_sw_hw_interface_state_t s; + s.sw_hw_if_index = sw_if_index; + s.flags = flags; + mc_serialize (vm->mc_main, &vnet_sw_interface_set_flags_msg, &s); + } + + /* 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); + si->flags = old_flags; + + if (error) + 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); + + /* save the si admin up flag */ + old_flags = si->flags; + + /* 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); + } + } + + si->flags &= ~mask; + si->flags |= flags; + +done: + return error; +} + +clib_error_t * +vnet_hw_interface_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 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, u32 flags) +{ + return vnet_sw_interface_set_flags_helper + (vnm, sw_if_index, flags, + VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE); +} + +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); + } + + return sw_if_index; +} + +clib_error_t * +vnet_create_sw_interface (vnet_main_t * vnm, vnet_sw_interface_t * template, + u32 * sw_if_index) +{ + clib_error_t *error; + vnet_hw_interface_t *hi; + vnet_device_class_t *dev_class; + + 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() */ + vnet_interface_main_t *im = &vnm->interface_main; + vnet_sw_interface_t *sw = + pool_elt_at_index (im->sw_interfaces, *sw_if_index); + pool_put (im->sw_interfaces, sw); + } + + 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); + + /* Make sure the interface is in L3 mode (removed from L2 BD or XConnect) */ + vlib_main_t *vm = vlib_get_main (); + l2_input_config_t *config; + config = vec_elt_at_index (l2input_main.configs, sw_if_index); + if (config->xconnect) + set_int_l2_mode (vm, vnm, MODE_L3, config->output_sw_if_index, 0, 0, 0, + 0); + if (config->xconnect || config->bridge) + set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0); + + /* 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 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->function = dev_class->tx_function; + 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); +} + +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; +} + +/* 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; + char *tx_node_name, *output_node_name; + + pool_get (im->hw_interfaces, hw); + + hw_index = hw - im->hw_interfaces; + hw->hw_if_index = hw_index; + + 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; + hw->min_packet_bytes = 0; + hw->per_packet_overhead_bytes = 0; + hw->max_l3_packet_bytes[VLIB_RX] = ~0; + hw->max_l3_packet_bytes[VLIB_TX] = ~0; + + tx_node_name = (char *) format (0, "%v-tx", hw->name); + output_node_name = (char *) format (0, "%v-output", hw->name); + + /* 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; + vnet_interface_output_runtime_t *rt; + 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_node_name); + vlib_node_rename (vm, hw->output_node_index, "%v", output_node_name); + + rt = vlib_node_get_runtime_data (vm, 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 (vm, 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->function = dev_class->flatten_output_chains ? + vnet_interface_output_node_flatten_multiarch_select () : + vnet_interface_output_node_multiarch_select (); + node->format_trace = format_vnet_interface_output_trace; + nrt = vlib_node_get_runtime (vm, hw->output_node_index); + nrt->function = node->function; + + node = vlib_get_node (vm, hw->tx_node_index); + node->function = dev_class->tx_function; + node->format_trace = dev_class->format_tx_trace; + nrt = vlib_node_get_runtime (vm, hw->tx_node_index); + nrt->function = node->function; + + vlib_worker_thread_node_runtime_update (); + _vec_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, + }; + + memset (&r, 0, sizeof (r)); + r.type = VLIB_NODE_TYPE_INTERNAL; + r.runtime_data = &rt; + r.runtime_data_bytes = sizeof (rt); + r.scalar_size = 0; + r.vector_size = sizeof (u32); + + r.flags = VLIB_NODE_FLAG_IS_OUTPUT; + r.name = tx_node_name; + r.function = dev_class->tx_function; + + hw->tx_node_index = vlib_register_node (vm, &r); + + vlib_node_add_named_next_with_slot (vm, hw->tx_node_index, + "error-drop", + VNET_INTERFACE_TX_NEXT_DROP); + + r.flags = 0; + r.name = output_node_name; + r.function = dev_class->flatten_output_chains ? + vnet_interface_output_node_flatten_multiarch_select () : + vnet_interface_output_node_multiarch_select (); + r.format_trace = format_vnet_interface_output_trace; + + { + static char *e[] = { + "interface is down", + "interface is deleted", + }; + + r.n_errors = ARRAY_LEN (e); + r.error_strings = e; + } + hw->output_node_index = vlib_register_node (vm, &r); + + 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); + } + } + + setup_output_node (vm, hw->output_node_index, hw_class); + setup_tx_node (vm, hw->tx_node_index, dev_class); + + /* 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; + + /* 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 software interface corresponding to hardware interface. */ + vnet_delete_sw_interface (vnm, hw->sw_if_index); + + /* Delete any sub-interfaces. */ + { + u32 id, sw_if_index; + /* *INDENT-OFF* */ + hash_foreach (id, sw_if_index, hw->sub_interface_sw_if_index_by_id, ({ + vnet_delete_sw_interface (vnm, sw_if_index); + })); + /* *INDENT-ON* */ + } + + { + vnet_hw_interface_nodes_t *dn; + vnet_interface_output_runtime_t *rt = + vlib_node_get_runtime_data (vm, 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); + 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); + + 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 and sub interfaces */ + fn (vnm, hi->sw_if_index, ctx); + + /* *INDENT-OFF* */ + hash_foreach (id, sw_if_index, + hi->sub_interface_sw_if_index_by_id, + ({ + fn (vnm, sw_if_index, ctx); + })); + /* *INDENT-ON* */ +} + +static void +serialize_vnet_hw_interface_set_class (serialize_main_t * m, va_list * va) +{ + u32 hw_if_index = va_arg (*va, u32); + char *hw_class_name = va_arg (*va, char *); + serialize_integer (m, hw_if_index, sizeof (hw_if_index)); + serialize_cstring (m, hw_class_name); +} + +static void +unserialize_vnet_hw_interface_set_class (serialize_main_t * m, va_list * va) +{ + CLIB_UNUSED (mc_main_t * mc) = va_arg (*va, mc_main_t *); + vnet_main_t *vnm = vnet_get_main (); + u32 hw_if_index; + char *hw_class_name; + uword *p; + clib_error_t *error; + + unserialize_integer (m, &hw_if_index, sizeof (hw_if_index)); + unserialize_cstring (m, &hw_class_name); + p = + hash_get (vnm->interface_main.hw_interface_class_by_name, hw_class_name); + ASSERT (p != 0); + error = vnet_hw_interface_set_class_helper (vnm, hw_if_index, p[0], + /* redistribute */ 0); + if (error) + clib_error_report (error); +} + +MC_SERIALIZE_MSG (vnet_hw_interface_set_class_msg, static) = +{ +.name = "vnet_hw_interface_set_class",.serialize = + serialize_vnet_hw_interface_set_class,.unserialize = + unserialize_vnet_hw_interface_set_class,}; + +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 (vnm->vlib_main->mc_main) + { + mc_serialize (vnm->vlib_main->mc_main, + &vnet_hw_interface_set_class_msg, hw_if_index, + new_class->name); + return 0; + } + } + + 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 (redistribute) + { + /* $$$$ fixme someday maybe */ + ASSERT (vnm->vlib_main->mc_main == 0); + } + 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_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); +} + +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; + + /* + * 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)); + } + + im->sw_if_counter_lock = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES, + CLIB_CACHE_LINE_BYTES); + im->sw_if_counter_lock[0] = 1; /* should be no need */ + + vec_validate (im->sw_if_counters, VNET_N_SIMPLE_INTERFACE_COUNTER - 1); + im->sw_if_counters[VNET_INTERFACE_COUNTER_DROP].name = "drops"; + im->sw_if_counters[VNET_INTERFACE_COUNTER_PUNT].name = "punts"; + im->sw_if_counters[VNET_INTERFACE_COUNTER_IP4].name = "ip4"; + im->sw_if_counters[VNET_INTERFACE_COUNTER_IP6].name = "ip6"; + im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_NO_BUF].name = "rx-no-buf"; + im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_MISS].name = "rx-miss"; + im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_ERROR].name = "rx-error"; + im->sw_if_counters[VNET_INTERFACE_COUNTER_TX_ERROR].name = "tx-error"; + + vec_validate (im->combined_sw_if_counters, + VNET_N_COMBINED_INTERFACE_COUNTER - 1); + im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_RX].name = "rx"; + im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_TX].name = "tx"; + + im->sw_if_counter_lock[0] = 0; + + im->device_class_by_name = hash_create_string ( /* size */ 0, + sizeof (uword)); + { + vnet_device_class_t *c; + + c = vnm->device_class_registrations; + + while (c) + { + c->index = vec_len (im->device_classes); + hash_set_mem (im->device_class_by_name, c->name, c->index); + vec_add1 (im->device_classes, c[0]); + c = c->next_class_registration; + } + } + + im->hw_interface_class_by_name = hash_create_string ( /* size */ 0, + sizeof (uword)); + + 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; + } + } + + { + clib_error_t *error; + + if ((error = vlib_call_init_function (vm, vnet_interface_cli_init))) + return error; + + return error; + } + vnm->interface_tag_by_sw_if_index = hash_create (0, sizeof (uword)); +} + +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; +} + +static clib_error_t * +vnet_hw_interface_change_mac_address_helper (vnet_main_t * vnm, + u32 hw_if_index, u64 mac_address) +{ + clib_error_t *error = 0; + vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index); + + if (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, (char *) &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, (char *) &mac_address); + } + else + { + error = + clib_error_return (0, + "MAC Address Change is not supported on this interface"); + } + } + 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, + u64 mac_address) +{ + return vnet_hw_interface_change_mac_address_helper + (vnm, hw_if_index, mac_address); +} + +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_UNICAST); + case VNET_LINK_ARP: + return (VNET_L3_PACKET_TYPE_ARP); + case VNET_LINK_ETHERNET: + ASSERT (0); + break; + } + ASSERT (0); + return (0); +} + +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) +{ + u8 *rewrite; + + rewrite = vnet_build_rewrite_for_sw_interface (vnm, sw_if_index, + adj_get_link_type (ai), + NULL); + + adj_nbr_update_rewrite (ai, ADJ_NBR_REWRITE_FLAG_COMPLETE, rewrite); +} + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |