diff options
Diffstat (limited to 'vnet/vnet/ethernet/mac_swap.c')
| -rw-r--r-- | vnet/vnet/ethernet/mac_swap.c | 397 |
1 files changed, 0 insertions, 397 deletions
diff --git a/vnet/vnet/ethernet/mac_swap.c b/vnet/vnet/ethernet/mac_swap.c deleted file mode 100644 index c0fec12e61e..00000000000 --- a/vnet/vnet/ethernet/mac_swap.c +++ /dev/null @@ -1,397 +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. - */ -#include <vlib/vlib.h> -#include <vnet/pg/pg.h> -#include <vnet/ethernet/ethernet.h> -#include <vppinfra/error.h> -#include <vnet/devices/pci/ige.h> -#include <vnet/devices/pci/ixge.h> -#include <vnet/devices/pci/ixgev.h> - -typedef struct -{ - u32 cached_next_index; - u32 cached_sw_if_index; - - /* Hash table to map sw_if_index to next node index */ - uword *next_node_index_by_sw_if_index; - - /* convenience */ - vlib_main_t *vlib_main; - vnet_main_t *vnet_main; -} mac_swap_main_t; - -typedef struct -{ - u8 src[6]; - u8 dst[6]; - u32 sw_if_index; - u32 next_index; -} swap_trace_t; - -/* packet trace format function */ -static u8 * -format_swap_trace (u8 * s, va_list * args) -{ - CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); - CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); - swap_trace_t *t = va_arg (*args, swap_trace_t *); - - s = format (s, "SWAP: dst now %U src now %U sw_if_index %d next_index %d", - format_ethernet_address, t->dst, - format_ethernet_address, t->src, t->sw_if_index, t->next_index); - return s; -} - -#define foreach_hw_driver_next \ - _(IP4) \ - _(IP6) \ - _(ETHERNET) - -mac_swap_main_t mac_swap_main; - -static vlib_node_registration_t mac_swap_node; - -#define foreach_mac_swap_error \ -_(SWAPS, "mac addresses swapped") - -typedef enum -{ -#define _(sym,str) MAC_SWAP_ERROR_##sym, - foreach_mac_swap_error -#undef _ - MAC_SWAP_N_ERROR, -} mac_swap_error_t; - -static char *mac_swap_error_strings[] = { -#define _(sym,string) string, - foreach_mac_swap_error -#undef _ -}; - -/* - * To drop a pkt and increment one of the previous counters: - * - * set b0->error = error_node->errors[RANDOM_ERROR_SAMPLE]; - * set next0 to a disposition index bound to "error-drop". - * - * To manually increment the specific counter MAC_SWAP_ERROR_SAMPLE: - * - * vlib_node_t *n = vlib_get_node (vm, mac_swap.index); - * u32 node_counter_base_index = n->error_heap_index; - * vlib_error_main_t * em = &vm->error_main; - * em->counters[node_counter_base_index + MAC_SWAP_ERROR_SAMPLE] += 1; - * - */ - -typedef enum -{ - MAC_SWAP_NEXT_DROP, - MAC_SWAP_N_NEXT, -} mac_swap_next_t; - -static uword -mac_swap_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 n_left_from, *from, *to_next; - mac_swap_next_t next_index; - mac_swap_main_t *msm = &mac_swap_main; - vlib_node_t *n = vlib_get_node (vm, mac_swap_node.index); - u32 node_counter_base_index = n->error_heap_index; - vlib_error_main_t *em = &vm->error_main; - - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - - while (n_left_from > 0) - { - u32 n_left_to_next; - - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - while (n_left_from >= 4 && n_left_to_next >= 2) - { - u32 bi0, bi1; - vlib_buffer_t *b0, *b1; - u32 next0, next1; - u32 sw_if_index0, sw_if_index1; - uword *p0, *p1; - u64 tmp0a, tmp0b; - u64 tmp1a, tmp1b; - ethernet_header_t *h0, *h1; - - - /* Prefetch next iteration. */ - { - vlib_buffer_t *p2, *p3; - - p2 = vlib_get_buffer (vm, from[2]); - p3 = vlib_get_buffer (vm, from[3]); - - vlib_prefetch_buffer_header (p2, LOAD); - vlib_prefetch_buffer_header (p3, LOAD); - - CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE); - CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE); - } - - to_next[0] = bi0 = from[0]; - to_next[1] = bi1 = from[1]; - from += 2; - to_next += 2; - n_left_from -= 2; - n_left_to_next -= 2; - - b0 = vlib_get_buffer (vm, bi0); - b1 = vlib_get_buffer (vm, bi1); - - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - next0 = msm->cached_next_index; - sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX]; - next1 = msm->cached_next_index; - - if (PREDICT_FALSE (msm->cached_sw_if_index != sw_if_index0)) - { - p0 = - hash_get (msm->next_node_index_by_sw_if_index, sw_if_index0); - if (p0 == 0) - { - vnet_hw_interface_t *hw0; - - hw0 = vnet_get_sup_hw_interface (msm->vnet_main, - sw_if_index0); - - next0 = vlib_node_add_next (msm->vlib_main, - mac_swap_node.index, - hw0->output_node_index); - hash_set (msm->next_node_index_by_sw_if_index, - sw_if_index0, next0); - } - else - next0 = p0[0]; - msm->cached_sw_if_index = sw_if_index0; - msm->cached_next_index = next0; - next1 = next0; - } - if (PREDICT_FALSE (msm->cached_sw_if_index != sw_if_index1)) - { - p1 = - hash_get (msm->next_node_index_by_sw_if_index, sw_if_index1); - if (p1 == 0) - { - vnet_hw_interface_t *hw1; - - hw1 = vnet_get_sup_hw_interface (msm->vnet_main, - sw_if_index1); - - next1 = vlib_node_add_next (msm->vlib_main, - mac_swap_node.index, - hw1->output_node_index); - hash_set (msm->next_node_index_by_sw_if_index, - sw_if_index1, next1); - } - else - next1 = p1[0]; - msm->cached_sw_if_index = sw_if_index1; - msm->cached_next_index = next1; - } - - em->counters[node_counter_base_index + MAC_SWAP_ERROR_SWAPS] += 2; - - /* reset buffer so we always point at the MAC hdr */ - vlib_buffer_reset (b0); - vlib_buffer_reset (b1); - h0 = vlib_buffer_get_current (b0); - h1 = vlib_buffer_get_current (b1); - - /* Swap 2 x src and dst mac addresses using 8-byte load/stores */ - tmp0a = clib_net_to_host_u64 (((u64 *) (h0->dst_address))[0]); - tmp1a = clib_net_to_host_u64 (((u64 *) (h1->dst_address))[0]); - tmp0b = clib_net_to_host_u64 (((u64 *) (h0->src_address))[0]); - tmp1b = clib_net_to_host_u64 (((u64 *) (h1->src_address))[0]); - ((u64 *) (h0->dst_address))[0] = clib_host_to_net_u64 (tmp0b); - ((u64 *) (h1->dst_address))[0] = clib_host_to_net_u64 (tmp1b); - /* Move the ethertype from "b" to "a" */ - tmp0a &= ~(0xFFFF); - tmp1a &= ~(0xFFFF); - tmp0a |= tmp0b & 0xFFFF; - ((u64 *) (h0->src_address))[0] = clib_host_to_net_u64 (tmp0a); - tmp1a |= tmp1b & 0xFFFF; - ((u64 *) (h1->src_address))[0] = clib_host_to_net_u64 (tmp1a); - - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) - { - if (b0->flags & VLIB_BUFFER_IS_TRACED) - { - swap_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - clib_memcpy (t->src, h0->src_address, 6); - clib_memcpy (t->dst, h0->dst_address, 6); - t->sw_if_index = sw_if_index0; - t->next_index = next0; - } - if (b1->flags & VLIB_BUFFER_IS_TRACED) - { - swap_trace_t *t = - vlib_add_trace (vm, node, b1, sizeof (*t)); - clib_memcpy (t->src, h1->src_address, 6); - clib_memcpy (t->dst, h1->dst_address, 6); - t->sw_if_index = sw_if_index1; - t->next_index = next1; - } - } - - vlib_validate_buffer_enqueue_x2 (vm, node, next_index, - to_next, n_left_to_next, - bi0, bi1, next0, next1); - } - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 bi0; - vlib_buffer_t *b0; - u32 next0; - u32 sw_if_index0; - uword *p0; - u64 tmp0a, tmp0b; - ethernet_header_t *h0; - - bi0 = from[0]; - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - next0 = msm->cached_next_index; - - if (PREDICT_FALSE (msm->cached_sw_if_index != sw_if_index0)) - { - p0 = - hash_get (msm->next_node_index_by_sw_if_index, sw_if_index0); - if (p0 == 0) - { - vnet_hw_interface_t *hw0; - - hw0 = vnet_get_sup_hw_interface (msm->vnet_main, - sw_if_index0); - - next0 = vlib_node_add_next (msm->vlib_main, - mac_swap_node.index, - hw0->output_node_index); - hash_set (msm->next_node_index_by_sw_if_index, - sw_if_index0, next0); - } - else - next0 = p0[0]; - msm->cached_sw_if_index = sw_if_index0; - msm->cached_next_index = next0; - } - - em->counters[node_counter_base_index + MAC_SWAP_ERROR_SWAPS] += 1; - - /* reset buffer so we always point at the MAC hdr */ - vlib_buffer_reset (b0); - h0 = vlib_buffer_get_current (b0); - - /* Exchange src and dst, preserve the ethertype */ - tmp0a = clib_net_to_host_u64 (((u64 *) (h0->dst_address))[0]); - tmp0b = clib_net_to_host_u64 (((u64 *) (h0->src_address))[0]); - ((u64 *) (h0->dst_address))[0] = clib_host_to_net_u64 (tmp0b); - tmp0a &= ~(0xFFFF); - tmp0a |= tmp0b & 0xFFFF; - ((u64 *) (h0->src_address))[0] = clib_host_to_net_u64 (tmp0a); - - /* ship it */ - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - swap_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t)); - clib_memcpy (t->src, h0->src_address, 6); - clib_memcpy (t->dst, h0->dst_address, 6); - t->sw_if_index = sw_if_index0; - t->next_index = next0; - } - - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - bi0, next0); - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - - return frame->n_vectors; -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (mac_swap_node,static) = { - .function = mac_swap_node_fn, - .name = "mac-swap", - .vector_size = sizeof (u32), - .format_trace = format_swap_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = ARRAY_LEN(mac_swap_error_strings), - .error_strings = mac_swap_error_strings, - - .n_next_nodes = MAC_SWAP_N_NEXT, - - /* edit / add dispositions here */ - .next_nodes = { - [MAC_SWAP_NEXT_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -clib_error_t * -mac_swap_init (vlib_main_t * vm) -{ - mac_swap_main_t *msm = &mac_swap_main; - - msm->next_node_index_by_sw_if_index = hash_create (0, sizeof (uword)); - msm->cached_next_index = (u32) ~ 0; - msm->cached_sw_if_index = (u32) ~ 0; - msm->vlib_main = vm; - msm->vnet_main = vnet_get_main (); - - /* Driver RX nodes send pkts here... */ -#define _(a) ixge_set_next_node (IXGE_RX_NEXT_##a##_INPUT, "mac-swap"); - foreach_hw_driver_next -#undef _ -#define _(a) ixgev_set_next_node (IXGEV_RX_NEXT_##a##_INPUT, "mac-swap"); - foreach_hw_driver_next -#undef _ -#define _(a) ige_set_next_node (IGE_RX_NEXT_##a##_INPUT, "mac-swap"); - foreach_hw_driver_next -#undef _ - return 0; -} - -VLIB_INIT_FUNCTION (mac_swap_init); - - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |