diff options
Diffstat (limited to 'vnet/vnet/rewrite.c')
| -rw-r--r-- | vnet/vnet/rewrite.c | 329 |
1 files changed, 0 insertions, 329 deletions
diff --git a/vnet/vnet/rewrite.c b/vnet/vnet/rewrite.c deleted file mode 100644 index 53d548bc8ae..00000000000 --- a/vnet/vnet/rewrite.c +++ /dev/null @@ -1,329 +0,0 @@ -/* - * 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. - */ -/* - * rewrite.c: packet rewrite - * - * 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/ip/lookup.h> - -void -vnet_rewrite_copy_slow_path (vnet_rewrite_data_t * p0, - vnet_rewrite_data_t * rw0, - word n_left, uword most_likely_size) -{ - uword n_done = - round_pow2 (most_likely_size, sizeof (rw0[0])) / sizeof (rw0[0]); - - p0 -= n_done; - rw0 -= n_done; - - /* As we enter the cleanup loop, p0 and rw0 point to the last chunk written - by the fast path. Hence, the constant 1, which the - vnet_rewrite_copy_one macro renders as p0[-1] = rw0[-1]. */ - - while (n_left > 0) - { - vnet_rewrite_copy_one (p0, rw0, 1); - p0--; - rw0--; - n_left--; - } -} - -u8 * -format_vnet_rewrite (u8 * s, va_list * args) -{ - vlib_main_t *vm = va_arg (*args, vlib_main_t *); - vnet_rewrite_header_t *rw = va_arg (*args, vnet_rewrite_header_t *); - u32 max_data_bytes = va_arg (*args, u32); - CLIB_UNUSED (uword indent) = va_arg (*args, u32); - vnet_main_t *vnm = vnet_get_main (); - vlib_node_t *next; - - next = vlib_get_next_node (vm, rw->node_index, rw->next_index); - - if (rw->sw_if_index != ~0) - { - vnet_sw_interface_t *si; - si = vnet_get_sw_interface (vnm, rw->sw_if_index); - s = format (s, "%U: ", format_vnet_sw_interface_name, vnm, si); - } - else - s = format (s, "%v: ", next->name); - - /* Format rewrite string. */ - if (rw->data_bytes > 0) - - s = format (s, "%U", - next->format_buffer ? next->format_buffer : format_hex_bytes, - rw->data + max_data_bytes - rw->data_bytes, rw->data_bytes); - - return s; -} - -u8 * -format_vnet_rewrite_header (u8 * s, va_list * args) -{ - vlib_main_t *vm = va_arg (*args, vlib_main_t *); - vnet_rewrite_header_t *rw = va_arg (*args, vnet_rewrite_header_t *); - u8 *packet_data = va_arg (*args, u8 *); - u32 packet_data_bytes = va_arg (*args, u32); - vlib_node_t *next; - - next = vlib_get_next_node (vm, rw->node_index, rw->next_index); - - /* Format rewrite string. */ - s = format (s, "%U", - next->format_buffer ? next->format_buffer : format_hex_bytes, - packet_data, packet_data_bytes); - - return s; -} - -uword -unformat_vnet_rewrite (unformat_input_t * input, va_list * args) -{ - vlib_main_t *vm = va_arg (*args, vlib_main_t *); - vnet_rewrite_header_t *rw = va_arg (*args, vnet_rewrite_header_t *); - u32 max_data_bytes = va_arg (*args, u32); - vnet_main_t *vnm = vnet_get_main (); - vlib_node_t *next; - u32 next_index, sw_if_index, max_packet_bytes, error; - u8 *rw_data; - - rw_data = 0; - sw_if_index = ~0; - max_packet_bytes = ~0; - error = 1; - - /* Parse sw interface. */ - if (unformat (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index)) - { - vnet_hw_interface_t *hi; - - hi = vnet_get_sup_hw_interface (vnm, sw_if_index); - - next_index = hi->output_node_index; - max_packet_bytes = hi->max_l3_packet_bytes[VLIB_RX]; - } - - else if (unformat (input, "%U", unformat_vlib_node, vm, &next_index)) - ; - - else - goto done; - - next = vlib_get_node (vm, next_index); - - if (next->unformat_buffer - && unformat_user (input, next->unformat_buffer, &rw_data)) - ; - - else if (unformat_user (input, unformat_hex_string, &rw_data) - || unformat (input, "0x%U", unformat_hex_string, &rw_data)) - ; - - else - goto done; - - /* Re-write does not fit. */ - if (vec_len (rw_data) >= max_data_bytes) - goto done; - - { - u32 tmp; - - if (unformat (input, "mtu %d", &tmp) - && tmp < (1 << BITS (rw->max_l3_packet_bytes))) - max_packet_bytes = tmp; - } - - error = 0; - rw->sw_if_index = sw_if_index; - rw->max_l3_packet_bytes = max_packet_bytes; - rw->next_index = vlib_node_add_next (vm, rw->node_index, next_index); - vnet_rewrite_set_data_internal (rw, max_data_bytes, rw_data, - vec_len (rw_data)); - -done: - vec_free (rw_data); - return error == 0; -} - -u32 -vnet_tx_node_index_for_sw_interface (vnet_main_t * vnm, u32 sw_if_index) -{ - vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index); - return (hw->output_node_index); -} - -void -vnet_rewrite_init (vnet_main_t * vnm, - u32 sw_if_index, - u32 this_node, u32 next_node, vnet_rewrite_header_t * rw) -{ - rw->sw_if_index = sw_if_index; - rw->node_index = this_node; - rw->next_index = vlib_node_add_next (vnm->vlib_main, this_node, next_node); - rw->max_l3_packet_bytes = - vnet_sw_interface_get_mtu (vnm, sw_if_index, VLIB_TX); -} - -void -vnet_rewrite_for_sw_interface (vnet_main_t * vnm, - vnet_link_t link_type, - u32 sw_if_index, - u32 node_index, - void *dst_address, - vnet_rewrite_header_t * rw, - u32 max_rewrite_bytes) -{ - - 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); - u8 *rewrite = NULL; - - vnet_rewrite_init (vnm, sw_if_index, node_index, - vnet_tx_node_index_for_sw_interface (vnm, sw_if_index), - rw); - - ASSERT (hc->build_rewrite); - rewrite = hc->build_rewrite (vnm, sw_if_index, link_type, dst_address); - - ASSERT (vec_len (rewrite) < max_rewrite_bytes); - vnet_rewrite_set_data_internal (rw, max_rewrite_bytes, rewrite, - vec_len (rewrite)); - vec_free (rewrite); -} - -void -vnet_rewrite_for_tunnel (vnet_main_t * vnm, - u32 tx_sw_if_index, - u32 rewrite_node_index, - u32 post_rewrite_node_index, - vnet_rewrite_header_t * rw, - u8 * rewrite_data, u32 rewrite_length) -{ - ip_adjacency_t *adj = 0; - /* - * Installed into vnet_buffer(b)->sw_if_index[VLIB_TX] e.g. - * by ip4_rewrite_inline. If the post-rewrite node injects into - * ipX-forward, this will be interpreted as a FIB number. - */ - rw->sw_if_index = tx_sw_if_index; - rw->node_index = rewrite_node_index; - rw->next_index = vlib_node_add_next (vnm->vlib_main, rewrite_node_index, - post_rewrite_node_index); - rw->max_l3_packet_bytes = (u16) ~ 0; /* we can't know at this point */ - - ASSERT (rewrite_length < sizeof (adj->rewrite_data)); - /* Leave room for ethernet + VLAN tag */ - vnet_rewrite_set_data_internal (rw, sizeof (adj->rewrite_data), - rewrite_data, rewrite_length); -} - -void -serialize_vnet_rewrite (serialize_main_t * m, va_list * va) -{ - vnet_rewrite_header_t *rw = va_arg (*va, vnet_rewrite_header_t *); - u32 max_data_bytes = va_arg (*va, u32); - u8 *p; - - serialize_integer (m, rw->sw_if_index, sizeof (rw->sw_if_index)); - serialize_integer (m, rw->data_bytes, sizeof (rw->data_bytes)); - serialize_integer (m, rw->max_l3_packet_bytes, - sizeof (rw->max_l3_packet_bytes)); - p = serialize_get (m, rw->data_bytes); - clib_memcpy (p, vnet_rewrite_get_data_internal (rw, max_data_bytes), - rw->data_bytes); -} - -void -unserialize_vnet_rewrite (serialize_main_t * m, va_list * va) -{ - vnet_rewrite_header_t *rw = va_arg (*va, vnet_rewrite_header_t *); - u32 max_data_bytes = va_arg (*va, u32); - u8 *p; - - /* It is up to user to fill these in. */ - rw->node_index = ~0; - rw->next_index = ~0; - - unserialize_integer (m, &rw->sw_if_index, sizeof (rw->sw_if_index)); - unserialize_integer (m, &rw->data_bytes, sizeof (rw->data_bytes)); - unserialize_integer (m, &rw->max_l3_packet_bytes, - sizeof (rw->max_l3_packet_bytes)); - p = unserialize_get (m, rw->data_bytes); - clib_memcpy (vnet_rewrite_get_data_internal (rw, max_data_bytes), p, - rw->data_bytes); -} - -u8 * -vnet_build_rewrite_for_sw_interface (vnet_main_t * vnm, - u32 sw_if_index, - vnet_link_t link_type, - const void *dst_address) -{ - 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); - - ASSERT (hc->build_rewrite); - return (hc->build_rewrite (vnm, sw_if_index, link_type, dst_address)); -} - - -void -vnet_update_adjacency_for_sw_interface (vnet_main_t * vnm, - u32 sw_if_index, u32 ai) -{ - 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); - - ASSERT (hc->update_adjacency); - hc->update_adjacency (vnm, sw_if_index, ai); -} - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |