/* *------------------------------------------------------------------ * 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 pemplied. * See the License for the specific language governing permissions and * lpemitations under the License. *------------------------------------------------------------------ */ #include #include #include #define foreach_pppoe_cp_next \ _(DROP, "error-drop") \ _(INTERFACE, "interface-output" ) \ typedef enum { #define _(s,n) PPPOE_CP_NEXT_##s, foreach_pppoe_cp_next #undef _ PPPOE_CP_N_NEXT, } pppoe_cp_next_t; typedef struct { u32 next_index; u32 sw_if_index; u32 cp_if_index; u8 pppoe_code; u16 ppp_proto; u32 error; } pppoe_cp_trace_t; static u8 * format_pppoe_cp_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_cp_trace_t * t = va_arg (*args, pppoe_cp_trace_t *); pppoe_main_t * pem = &pppoe_main; if (t->sw_if_index != pem->cp_if_index) { s = format (s, "PPPoE dispatch from sw_if_index %d next %d error %d \n" " pppoe_code 0x%x ppp_proto 0x%x", t->sw_if_index, t->next_index, t->error, t->pppoe_code, t->ppp_proto); } else { s = format (s, "PPPoE dispatch from cp_if_index %d next %d error %d \n" " pppoe_code 0x%x ppp_proto 0x%x", t->cp_if_index, t->next_index, t->error, t->pppoe_code, t->ppp_proto); } return s; } VLIB_NODE_FN (pppoe_cp_dispatch_node) (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_decapsulated = 0; u32 thread_index = vlib_get_thread_index(); u32 stats_sw_if_index, stats_n_packets, stats_n_bytes; pppoe_entry_key_t cached_key; pppoe_entry_result_t cached_result; from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; /* Clear the one-entry cache in case session table was updated */ cached_key.raw = ~0; cached_result.raw = ~0; /* warning be gone */ 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 > 0 && n_left_to_next > 0) { u32 bi0; vlib_buffer_t * b0; ethernet_header_t *h0; pppoe_header_t * pppoe0; pppoe_entry_key_t key0; pppoe_entry_result_t result0; u32 bucket0; u32 next0; u32 error0 = 0; u32 rx_sw_if_index0=~0, tx_sw_if_index0=~0, len0; vnet_hw_interface_t *hi; vnet_sw_interface_t *si; 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); /* leaves current_data pointing at the pppoe header */ pppoe0 = vlib_buffer_get_current (b0); rx_sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX]; if (PREDICT_FALSE (pppoe0->ver_type != PPPOE_VER_TYPE)) { error0 = PPPOE_ERROR_BAD_VER_TYPE; next0 = PPPOE_INPUT_NEXT_DROP; goto trace00; } vlib_buffer_reset(b0); h0 = vlib_buffer_get_current (b0); if(rx_sw_if_index0 == pem->cp_if_index) { pppoe_lookup_1 (&pem->link_table, &cached_key, &cached_result, h0->dst_address, 0, &key0, &bucket0, &result0); tx_sw_if_index0 = result0.fields.sw_if_index; if (PREDICT_FALSE (tx_sw_if_index0 == ~0)) { error0 = PPPOE_ERROR_NO_SUCH_SESSION; next0 = PPPOE_INPUT_NEXT_DROP; goto trace00; } next0 = PPPOE_CP_NEXT_INTERFACE; vnet_buffer(b0)->sw_if_index[VLIB_TX] = tx_sw_if_index0; /* set src mac address */ si = vnet_get_sw_interface(vnm, tx_sw_if_index0); hi = vnet_get_hw_interface (vnm, si->hw_if_index); clib_memcpy_fast (vlib_buffer_get_current (b0)+6, hi->hw_address, 6); } else { pppoe_lookup_1 (&pem->link_table, &cached_key, &cached_result, h0->src_address, 0, &key0, &bucket0, &result0); tx_sw_if_index0 = result0.fields.sw_if_index; /* learn client session */ pppoe_learn_process (&pem->link_table, rx_sw_if_index0, &key0, &cached_key, &bucket0, &result0); next0 = PPPOE_CP_NEXT_INTERFACE; vnet_buffer(b0)->sw_if_index[VLIB_TX] = pem->cp_if_index; } len0 = vlib_buffer_length_in_chain (vm, b0); pkts_decapsulated ++; stats_n_packets += 1; st