diff options
Diffstat (limited to 'src/plugins/pppoe/pppoe_encap.c')
| -rw-r--r-- | src/plugins/pppoe/pppoe_encap.c | 384 |
1 files changed, 0 insertions, 384 deletions
diff --git a/src/plugins/pppoe/pppoe_encap.c b/src/plugins/pppoe/pppoe_encap.c deleted file mode 100644 index 69bec61dec1..00000000000 --- a/src/plugins/pppoe/pppoe_encap.c +++ /dev/null @@ -1,384 +0,0 @@ -/* - * Copyright (c) 2017 Intel 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 <vppinfra/error.h> -#include <vppinfra/hash.h> -#include <vnet/vnet.h> -#include <vnet/ip/ip.h> -#include <vnet/ethernet/ethernet.h> -#include <pppoe/pppoe.h> - -/* Statistics (not all errors) */ -#define foreach_pppoe_encap_error \ -_(ENCAPSULATED, "good packets encapsulated") - -static char * pppoe_encap_error_strings[] = { -#define _(sym,string) string, - foreach_pppoe_encap_error -#undef _ -}; - -typedef enum { -#define _(sym,str) PPPOE_ENCAP_ERROR_##sym, - foreach_pppoe_encap_error -#undef _ - PPPOE_ENCAP_N_ERROR, -} pppoe_encap_error_t; - -#define foreach_pppoe_encap_next \ -_(DROP, "error-drop") \ -_(INTERFACE, "interface-output" ) \ - -typedef enum -{ -#define _(s,n) PPPOE_ENCAP_NEXT_##s, - foreach_pppoe_encap_next -#undef _ - PPPOE_ENCAP_N_NEXT, -} pppoe_encap_next_t; - -typedef struct { - u32 session_index; - u32 session_id; -} pppoe_encap_trace_t; - -u8 * format_pppoe_encap_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 *); - pppoe_encap_trace_t * t - = va_arg (*args, pppoe_encap_trace_t *); - - s = format (s, "PPPOE encap to pppoe_session%d session_id %d", - t->session_index, t->session_id); - return s; -} - - -#define foreach_fixed_header2_offset \ - _(0) _(1) - - -static uword -pppoe_encap (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - u32 n_left_from, next_index, * from, * to_next; - pppoe_main_t * pem = &pppoe_main; - vnet_main_t * vnm = pem->vnet_main; - vnet_interface_main_t * im = &vnm->interface_main; - u32 pkts_encapsulated = 0; - u32 thread_index = vlib_get_thread_index(); - u32 stats_sw_if_index, stats_n_packets, stats_n_bytes; - u32 sw_if_index0 = 0, sw_if_index1 = 0; - u32 next0 = 0, next1 = 0; - pppoe_session_t * t0 = NULL, * t1 = NULL; - - from = vlib_frame_vector_args (from_frame); - n_left_from = from_frame->n_vectors; - - next_index = node->cached_next_index; - stats_sw_if_index = node->runtime_data[0]; - stats_n_packets = stats_n_bytes = 0; - - 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 len0, len1; - ethernet_header_t * eth0, * eth1; - pppoe_header_t * pppoe0, * pppoe1; - u64 * copy_src0, * copy_dst0; - u64 * copy_src1, * copy_dst1; - u16 * copy_src_last0, * copy_dst_last0; - u16 * copy_src_last1, * copy_dst_last1; - u16 new_l0, new_l1; - u32 session_id0, session_id1; - - /* 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, 2*CLIB_CACHE_LINE_BYTES, LOAD); - CLIB_PREFETCH (p3->data, 2*CLIB_CACHE_LINE_BYTES, LOAD); - } - - bi0 = from[0]; - bi1 = from[1]; - to_next[0] = bi0; - to_next[1] = bi1; - from += 2; - to_next += 2; - n_left_to_next -= 2; - n_left_from -= 2; - - b0 = vlib_get_buffer (vm, bi0); - b1 = vlib_get_buffer (vm, bi1); - - /* Get next node index and if-index from session */ - sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_TX]; - session_id0 = pem->session_index_by_sw_if_index[sw_if_index0]; - t0 = pool_elt_at_index(pem->sessions, session_id0); - next0 = PPPOE_ENCAP_NEXT_INTERFACE; - vnet_buffer(b0)->sw_if_index[VLIB_TX] = t0->encap_if_index; - - /* Get next node index and if-index from session */ - sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_TX]; - session_id1 = pem->session_index_by_sw_if_index[sw_if_index1]; - t1 = pool_elt_at_index(pem->sessions, session_id1); - next1 = PPPOE_ENCAP_NEXT_INTERFACE; - vnet_buffer(b1)->sw_if_index[VLIB_TX] = t1->encap_if_index; - - /* Apply the rewrite string. $$$$ vnet_rewrite? */ - vlib_buffer_advance (b0, -(word)_vec_len(t0->rewrite)); - vlib_buffer_advance (b1, -(word)_vec_len(t1->rewrite)); - - eth0 = (ethernet_header_t *)(vlib_buffer_get_current(b0)); - eth1 = (ethernet_header_t *)(vlib_buffer_get_current(b1)); - - /* Copy the fixed header */ - copy_dst0 = (u64 *) eth0; - copy_src0 = (u64 *) t0->rewrite; - copy_dst1 = (u64 *) eth1; - copy_src1 = (u64 *) t1->rewrite; - /* Copy first 8-bytes at a time */ -#define _(offs) copy_dst0[offs] = copy_src0[offs]; - foreach_fixed_header2_offset; -#undef _ - /* Last 6 octets. Hopefully gcc will be our friend */ - copy_dst_last0 = (u16 *)(©_dst0[2]); - copy_src_last0 = (u16 *)(©_src0[2]); - copy_dst_last0[0] = copy_src_last0[0]; - copy_dst_last0[1] = copy_src_last0[1]; - copy_dst_last0[2] = copy_src_last0[2]; - -#define _(offs) copy_dst1[offs] = copy_src1[offs]; - foreach_fixed_header2_offset; -#undef _ - /* Last 6 octets. Hopefully gcc will be our friend */ - copy_dst_last1 = (u16 *)(©_dst1[2]); - copy_src_last1 = (u16 *)(©_src1[2]); - copy_dst_last1[0] = copy_src_last1[0]; - copy_dst_last1[1] = copy_src_last1[1]; - copy_dst_last1[2] = copy_src_last1[2]; - - /* Fix PPPoE length */ - new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b0) - - sizeof (*pppoe0) - sizeof(*eth0)); - pppoe0 = (pppoe_header_t *)(eth0 + 1); - pppoe0->length = new_l0; - - new_l1 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b1) - - sizeof (*pppoe1) - sizeof(*eth1)); - pppoe1 = (pppoe_header_t *)(eth1 + 1); - pppoe1->length = new_l1; - - pkts_encapsulated += 2; - len0 = vlib_buffer_length_in_chain (vm, b0); - len1 = vlib_buffer_length_in_chain (vm, b1); - stats_n_packets += 2; - stats_n_bytes += len0 + len1; - - /* Batch stats increment on the same pppoe session so counter is not - incremented per packet. Note stats are still incremented for deleted - and admin-down session where packets are dropped. It is not worthwhile - to check for this rare case and affect normal path performance. */ - if (PREDICT_FALSE ((sw_if_index0 != stats_sw_if_index) || - (sw_if_index1 != stats_sw_if_index))) - { - stats_n_packets -= 2; - stats_n_bytes -= len0 + len1; - if (sw_if_index0 == sw_if_index1) - { - if (stats_n_packets) - vlib_increment_combined_counter - (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX, - thread_index, stats_sw_if_index, - stats_n_packets, stats_n_bytes); - stats_sw_if_index = sw_if_index0; - stats_n_packets = 2; - stats_n_bytes = len0 + len1; - } - else - { - vlib_increment_combined_counter - (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX, - thread_index, sw_if_index0, 1, len0); - vlib_increment_combined_counter - (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX, - thread_index, sw_if_index1, 1, len1); - } - } - - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) - { - pppoe_encap_trace_t *tr = - vlib_add_trace (vm, node, b0, sizeof (*tr)); - tr->session_index = t0 - pem->sessions; - tr->session_id = t0->session_id; - } - - if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED)) - { - pppoe_encap_trace_t *tr = - vlib_add_trace (vm, node, b1, sizeof (*tr)); - tr->session_index = t1 - pem->sessions; - tr->session_id = t1->session_id; - } - - 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; - ethernet_header_t * eth0; - pppoe_header_t * pppoe0; - u64 * copy_src0, * copy_dst0; - u16 * copy_src_last0, * copy_dst_last0; - u16 new_l0; - u32 len0; - u32 session_id0; - - 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); - - /* Get next node index and if-index from session */ - sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_TX]; - session_id0 = pem->session_index_by_sw_if_index[sw_if_index0]; - t0 = pool_elt_at_index(pem->sessions, session_id0); - next0 = PPPOE_ENCAP_NEXT_INTERFACE; - vnet_buffer(b0)->sw_if_index[VLIB_TX] = t0->encap_if_index; - - /* Apply the rewrite string. $$$$ vnet_rewrite? */ - vlib_buffer_advance (b0, -(word)_vec_len(t0->rewrite)); - - eth0 = (ethernet_header_t *)(vlib_buffer_get_current(b0)); - /* Copy the fixed header */ - copy_dst0 = (u64 *) eth0; - copy_src0 = (u64 *) t0->rewrite; - - /* Copy first 8-bytes at a time */ -#define _(offs) copy_dst0[offs] = copy_src0[offs]; - foreach_fixed_header2_offset; -#undef _ - /* Last 6 octets. Hopefully gcc will be our friend */ - copy_dst_last0 = (u16 *)(©_dst0[2]); - copy_src_last0 = (u16 *)(©_src0[2]); - copy_dst_last0[0] = copy_src_last0[0]; - copy_dst_last0[1] = copy_src_last0[1]; - copy_dst_last0[2] = copy_src_last0[2]; - - /* Fix PPPoE length */ - new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b0) - - sizeof (*pppoe0) - sizeof(*eth0)); - pppoe0 = (pppoe_header_t *)(eth0 + 1); - pppoe0->length = new_l0; - - pkts_encapsulated ++; - len0 = vlib_buffer_length_in_chain (vm, b0); - stats_n_packets += 1; - stats_n_bytes += len0; - - /* Batch stats increment on the same pppoe session so counter is not - incremented per packet. Note stats are still incremented for deleted - and admin-down session where packets are dropped. It is not worthwhile - to check for this rare case and affect normal path performance. */ - if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index)) - { - stats_n_packets -= 1; - stats_n_bytes -= len0; - if (stats_n_packets) - vlib_increment_combined_counter - (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX, - thread_index, stats_sw_if_index, - stats_n_packets, stats_n_bytes); - stats_n_packets = 1; - stats_n_bytes = len0; - stats_sw_if_index = sw_if_index0; - } - - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) - { - pppoe_encap_trace_t *tr = - vlib_add_trace (vm, node, b0, sizeof (*tr)); - tr->session_index = t0 - pem->sessions; - tr->session_id = t0->session_id; - } - 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); - } - - /* Do we still need this now that session tx stats is kept? */ - vlib_node_increment_counter (vm, node->node_index, - PPPOE_ENCAP_ERROR_ENCAPSULATED, - pkts_encapsulated); - - /* Increment any remaining batch stats */ - if (stats_n_packets) - { - vlib_increment_combined_counter - (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX, - thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes); - node->runtime_data[0] = stats_sw_if_index; - } - - return from_frame->n_vectors; -} - -VLIB_REGISTER_NODE (pppoe_encap_node) = { - .function = pppoe_encap, - .name = "pppoe-encap", - .vector_size = sizeof (u32), - .format_trace = format_pppoe_encap_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - .n_errors = ARRAY_LEN(pppoe_encap_error_strings), - .error_strings = pppoe_encap_error_strings, - .n_next_nodes = PPPOE_ENCAP_N_NEXT, - .next_nodes = { -#define _(s,n) [PPPOE_ENCAP_NEXT_##s] = n, - foreach_pppoe_encap_next -#undef _ - }, -}; - -VLIB_NODE_FUNCTION_MULTIARCH (pppoe_encap_node, pppoe_encap) - |