From 88509fe353767cbde707c3e3b1f29392957819f3 Mon Sep 17 00:00:00 2001 From: Mauro Sardara Date: Tue, 24 Mar 2020 17:34:14 +0000 Subject: [HICN-574] Host stack plugin for VPP. Signed-off-by: Mauro Sardara Change-Id: I8d8fdffef31a7013265d6529c5f52f3d5ec70d18 Signed-off-by: Mauro Sardara Signed-off-by: Mauro Signed-off-by: Mauro Sardara --- hicn-plugin/src/pg.c | 1326 -------------------------------------------------- 1 file changed, 1326 deletions(-) delete mode 100644 hicn-plugin/src/pg.c (limited to 'hicn-plugin/src/pg.c') diff --git a/hicn-plugin/src/pg.c b/hicn-plugin/src/pg.c deleted file mode 100644 index eb833030d..000000000 --- a/hicn-plugin/src/pg.c +++ /dev/null @@ -1,1326 +0,0 @@ -/* - * Copyright (c) 2017-2019 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 -#include -#include -#include -#include - -#include "hicn.h" -#include "pg.h" -#include "parser.h" -#include "infra.h" - -/* Registration struct for a graph node */ -vlib_node_registration_t hicn_pg_interest_node; -vlib_node_registration_t hicn_pg_data_node; - -/* Stats, which end up called "error" even though they aren't... */ -#define foreach_hicnpg_error \ - _(PROCESSED, "hICN PG packets processed") \ - _(DROPPED, "hICN PG packets dropped") \ - _(INTEREST_MSGS_GENERATED, "hICN PG Interests generated") \ - _(CONTENT_MSGS_RECEIVED, "hICN PG Content msgs received") - -typedef enum -{ -#define _(sym,str) HICNPG_ERROR_##sym, - foreach_hicnpg_error -#undef _ - HICNPG_N_ERROR, -} hicnpg_error_t; - -static char *hicnpg_error_strings[] = { -#define _(sym,string) string, - foreach_hicnpg_error -#undef _ -}; - -/* - * Next graph nodes, which reference the list in the actual registration - * block below - */ -typedef enum -{ - HICNPG_INTEREST_NEXT_V4_LOOKUP, - HICNPG_INTEREST_NEXT_V6_LOOKUP, - HICNPG_INTEREST_NEXT_DROP, - HICNPG_N_NEXT, -} hicnpg_interest_next_t; - -/* Trace context struct */ -typedef struct -{ - u32 next_index; - u32 sw_if_index; - u8 pkt_type; - u16 msg_type; -} hicnpg_trace_t; - -hicnpg_main_t hicnpg_main = { - .index = (u32) 0, - .index_ifaces = (u32) 1, - .max_seq_number = (u32) ~ 0, - .interest_lifetime = 4, - .n_flows = (u32) 0, - .n_ifaces = (u32) 1, - .sw_if = (u32) 0 -}; - -hicnpg_server_main_t hicnpg_server_main = { - .node_index = 0, -}; - -/* packet trace format function */ -static u8 * -format_hicnpg_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 *); - hicnpg_trace_t *t = va_arg (*args, hicnpg_trace_t *); - - s = format (s, "HICNPG: pkt: %d, msg %d, sw_if_index %d, next index %d", - (int) t->pkt_type, (int) t->msg_type, - t->sw_if_index, t->next_index); - return (s); -} - -always_inline void -hicn_rewrite_interestv4 (vlib_main_t * vm, vlib_buffer_t * b0, u32 seq_number, - u16 lifetime, u32 next_flow, u32 iface); - -always_inline void -hicn_rewrite_interestv6 (vlib_main_t * vm, vlib_buffer_t * b0, u32 seq_number, - u16 lifetime, u32 next_flow, u32 iface); - -always_inline void -convert_interest_to_data_v4 (vlib_main_t * vm, vlib_buffer_t * b0, - vlib_buffer_t * rb, u32 bi0); - -always_inline void -convert_interest_to_data_v6 (vlib_main_t * vm, vlib_buffer_t * b0, - vlib_buffer_t * rb, u32 bi0); - -always_inline void -calculate_tcp_checksum_v4 (vlib_main_t * vm, vlib_buffer_t * b0); - -always_inline void -calculate_tcp_checksum_v6 (vlib_main_t * vm, vlib_buffer_t * b0); -/* - * Node function for the icn packet-generator client. The goal here is to - * manipulate/tweak a stream of packets that have been injected by the vpp - * packet generator to generate icn request traffic. - */ -static uword -hicnpg_client_interest_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - u32 n_left_from, *from, *to_next; - hicnpg_interest_next_t next_index; - u32 pkts_processed = 0, pkts_dropped = 0; - u32 interest_msgs_generated = 0; - u32 bi0, bi1; - vlib_buffer_t *b0, *b1; - u8 pkt_type0 = 0, pkt_type1 = 0; - u16 msg_type0 = 0, msg_type1 = 0; - hicn_header_t *hicn0 = NULL, *hicn1 = NULL; - hicn_name_t name0, name1; - u16 namelen0, namelen1; - hicnpg_main_t *hpgm = &hicnpg_main; - int iface = 0; - - 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 next0 = HICNPG_INTEREST_NEXT_DROP; - u32 next1 = HICNPG_INTEREST_NEXT_DROP; - u32 sw_if_index0 = ~0, sw_if_index1 = ~0; - u8 isv6_0; - u8 isv6_1; - - /* 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), STORE); - CLIB_PREFETCH (p3->data, (2 * CLIB_CACHE_LINE_BYTES), STORE); - } - - /* - * speculatively enqueue b0 and b1 to the current - * next frame - */ - 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]; - sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX]; - vnet_buffer (b0)->sw_if_index[VLIB_RX] = hpgm->sw_if; - vnet_buffer (b1)->sw_if_index[VLIB_RX] = hpgm->sw_if; - - /* Check icn packets, locate names */ - if (hicn_interest_parse_pkt (b0, &name0, &namelen0, &hicn0, &isv6_0) - == HICN_ERROR_NONE) - { - /* this node grabs only interests */ - - /* Increment the appropriate message counter */ - interest_msgs_generated++; - - iface = (hpgm->index_ifaces % hpgm->n_ifaces); - /* Rewrite and send */ - isv6_0 ? hicn_rewrite_interestv6 (vm, b0, - (hpgm->index / - hpgm->n_flows) % - hpgm->max_seq_number, - hpgm->interest_lifetime, - hpgm->index % hpgm->n_flows, - iface) : - hicn_rewrite_interestv4 (vm, b0, - (hpgm->index / hpgm->n_flows) % - hpgm->max_seq_number, - hpgm->interest_lifetime, - hpgm->index % hpgm->n_flows, iface); - - hpgm->index_ifaces++; - if (iface == (hpgm->n_ifaces - 1)) - hpgm->index++; - - next0 = - isv6_0 ? HICNPG_INTEREST_NEXT_V6_LOOKUP : - HICNPG_INTEREST_NEXT_V4_LOOKUP; - } - if (hicn_interest_parse_pkt (b1, &name1, &namelen1, &hicn1, &isv6_1) - == HICN_ERROR_NONE) - { - /* this node grabs only interests */ - - /* Increment the appropriate message counter */ - interest_msgs_generated++; - - iface = (hpgm->index_ifaces % hpgm->n_ifaces); - /* Rewrite and send */ - isv6_1 ? hicn_rewrite_interestv6 (vm, b1, - (hpgm->index / - hpgm->n_flows) % - hpgm->max_seq_number, - hpgm->interest_lifetime, - hpgm->index % hpgm->n_flows, - iface) : - hicn_rewrite_interestv4 (vm, b1, - (hpgm->index / hpgm->n_flows) % - hpgm->max_seq_number, - hpgm->interest_lifetime, - hpgm->index % hpgm->n_flows, iface); - - hpgm->index_ifaces++; - if (iface == (hpgm->n_ifaces - 1)) - hpgm->index++; - - next1 = - isv6_1 ? HICNPG_INTEREST_NEXT_V6_LOOKUP : - HICNPG_INTEREST_NEXT_V4_LOOKUP; - } - /* Send pkt to next node */ - vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0; - vnet_buffer (b1)->sw_if_index[VLIB_TX] = ~0; - - pkts_processed += 2; - - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) - { - if (b0->flags & VLIB_BUFFER_IS_TRACED) - { - hicnpg_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->pkt_type = pkt_type0; - t->msg_type = msg_type0; - t->sw_if_index = sw_if_index0; - t->next_index = next0; - } - if (b1->flags & VLIB_BUFFER_IS_TRACED) - { - hicnpg_trace_t *t = - vlib_add_trace (vm, node, b1, sizeof (*t)); - t->pkt_type = pkt_type1; - t->msg_type = msg_type1; - t->sw_if_index = sw_if_index1; - t->next_index = next1; - } - } - if (next0 == HICNPG_INTEREST_NEXT_DROP) - { - pkts_dropped++; - } - if (next1 == HICNPG_INTEREST_NEXT_DROP) - { - pkts_dropped++; - } - /* - * verify speculative enqueues, maybe switch current - * next frame - */ - 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 next0 = HICNPG_INTEREST_NEXT_DROP; - u32 sw_if_index0; - u8 isv6_0; - - /* speculatively enqueue b0 to the current next frame */ - 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]; - vnet_buffer (b0)->sw_if_index[VLIB_RX] = hpgm->sw_if; - - /* Check icn packets, locate names */ - if (hicn_interest_parse_pkt (b0, &name0, &namelen0, &hicn0, &isv6_0) - == HICN_ERROR_NONE) - { - /* this node grabs only interests */ - - /* Increment the appropriate message counter */ - interest_msgs_generated++; - - iface = (hpgm->index_ifaces % hpgm->n_ifaces); - - /* Rewrite and send */ - isv6_0 ? hicn_rewrite_interestv6 (vm, b0, - (hpgm->index / - hpgm->n_flows) % - hpgm->max_seq_number, - hpgm->interest_lifetime, - hpgm->index % hpgm->n_flows, - iface) : - hicn_rewrite_interestv4 (vm, b0, - (hpgm->index / hpgm->n_flows) % - hpgm->max_seq_number, - hpgm->interest_lifetime, - hpgm->index % hpgm->n_flows, iface); - - hpgm->index_ifaces++; - if (iface == (hpgm->n_ifaces - 1)) - hpgm->index++; - - next0 = - isv6_0 ? HICNPG_INTEREST_NEXT_V6_LOOKUP : - HICNPG_INTEREST_NEXT_V4_LOOKUP; - } - /* Send pkt to ip lookup */ - vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0; - - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - hicnpg_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t)); - t->pkt_type = pkt_type0; - t->msg_type = msg_type0; - t->sw_if_index = sw_if_index0; - t->next_index = next0; - } - pkts_processed += 1; - - if (next0 == HICNPG_INTEREST_NEXT_DROP) - { - pkts_dropped++; - } - /* - * verify speculative enqueue, maybe switch current - * next frame - */ - 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); - } - - vlib_node_increment_counter (vm, hicn_pg_interest_node.index, - HICNPG_ERROR_PROCESSED, pkts_processed); - vlib_node_increment_counter (vm, hicn_pg_interest_node.index, - HICNPG_ERROR_DROPPED, pkts_dropped); - vlib_node_increment_counter (vm, hicn_pg_interest_node.index, - HICNPG_ERROR_INTEREST_MSGS_GENERATED, - interest_msgs_generated); - - return (frame->n_vectors); -} - -void -hicn_rewrite_interestv4 (vlib_main_t * vm, vlib_buffer_t * b0, u32 seq_number, - u16 interest_lifetime, u32 next_flow, u32 iface) -{ - hicn_header_t *h0 = vlib_buffer_get_current (b0); - - /* Generate the right src and dst corresponding to flow and iface */ - ip46_address_t src_addr = { - .ip4 = hicnpg_main.pgen_clt_src_addr.ip4, - }; - hicn_name_t dst_name = { - .prefix.ip4 = hicnpg_main.pgen_clt_hicn_name->fp_addr.ip4, - .suffix = seq_number, - }; - - src_addr.ip4.as_u32 += clib_host_to_net_u32 (iface); - dst_name.prefix.ip4.as_u32 += clib_net_to_host_u32 (next_flow); - - /* Update locator and name */ - hicn_type_t type = hicn_get_buffer (b0)->type; - HICN_OPS4->set_interest_locator (type, &h0->protocol, &src_addr); - HICN_OPS4->set_interest_name (type, &h0->protocol, &dst_name); - - /* Update lifetime (currently L4 checksum is not updated) */ - HICN_OPS4->set_lifetime (type, &h0->protocol, interest_lifetime); - - /* Update checksums */ - HICN_OPS4->update_checksums (type, &h0->protocol, 0, 0); -} - -/** - * @brief Rewrite the IPv6 header as the next generated packet - * - * Set up a name prefix - * - etiher generate interest in which the name varies only after the prefix - * (inc : seq_number), then the flow acts on the prefix (CHECK) - * seq_number => TCP, FLOW => - * - * SRC : pgen_clt_src_addr.ip6 DST = generate name (pgen_clt_hicn_name.ip6) - * ffff:ffff:ffff:ffff ffff:ffff:ffff:ffff - * \__/ \__/ - * +iface + flow - * Source is used to emulate different consumers. - * FIXME iface is ill-named, better name it consumer id - * Destination is used to iterate on the content. - */ -void -hicn_rewrite_interestv6 (vlib_main_t * vm, vlib_buffer_t * b0, u32 seq_number, - u16 interest_lifetime, u32 next_flow, u32 iface) -{ - hicn_header_t *h0 = vlib_buffer_get_current (b0); - - /* Generate the right src and dst corresponding to flow and iface */ - ip46_address_t src_addr = { - .ip6 = hicnpg_main.pgen_clt_src_addr.ip6, - }; - hicn_name_t dst_name = { - .prefix.ip6 = hicnpg_main.pgen_clt_hicn_name->fp_addr.ip6, - .suffix = seq_number, - }; - src_addr.ip6.as_u32[3] += clib_host_to_net_u32 (iface); - dst_name.prefix.ip6.as_u32[3] += clib_net_to_host_u32 (next_flow); - - /* Update locator and name */ - hicn_type_t type = hicn_get_buffer (b0)->type; - HICN_OPS6->set_interest_locator (type, &h0->protocol, &src_addr); - HICN_OPS6->set_interest_name (type, &h0->protocol, &dst_name); - - /* Update lifetime */ - HICN_OPS6->set_lifetime (type, &h0->protocol, interest_lifetime); - - /* Update checksums */ - calculate_tcp_checksum_v6 (vm, b0); -} - - - -void -calculate_tcp_checksum_v4 (vlib_main_t * vm, vlib_buffer_t * b0) -{ - ip4_header_t *ip0; - tcp_header_t *tcp0; - ip_csum_t sum0; - u32 tcp_len0; - - ip0 = (ip4_header_t *) (vlib_buffer_get_current (b0)); - tcp0 = - (tcp_header_t *) (vlib_buffer_get_current (b0) + sizeof (ip4_header_t)); - tcp_len0 = clib_net_to_host_u16 (ip0->length) - sizeof (ip4_header_t); - - /* Initialize checksum with header. */ - if (BITS (sum0) == 32) - { - sum0 = clib_mem_unaligned (&ip0->src_address, u32); - sum0 = - ip_csum_with_carry (sum0, - clib_mem_unaligned (&ip0->dst_address, u32)); - } - else - sum0 = clib_mem_unaligned (&ip0->src_address, u64); - - sum0 = ip_csum_with_carry - (sum0, clib_host_to_net_u32 (tcp_len0 + (ip0->protocol << 16))); - - /* Invalidate possibly old checksum. */ - tcp0->checksum = 0; - - u32 tcp_offset = sizeof (ip4_header_t); - sum0 = ip_incremental_checksum_buffer (vm, b0, tcp_offset, tcp_len0, sum0); - - tcp0->checksum = ~ip_csum_fold (sum0); -} - -void -calculate_tcp_checksum_v6 (vlib_main_t * vm, vlib_buffer_t * b0) -{ - ip6_header_t *ip0; - tcp_header_t *tcp0; - ip_csum_t sum0; - u32 tcp_len0; - - ip0 = (ip6_header_t *) (vlib_buffer_get_current (b0)); - tcp0 = - (tcp_header_t *) (vlib_buffer_get_current (b0) + sizeof (ip6_header_t)); - tcp_len0 = clib_net_to_host_u16 (ip0->payload_length); - - /* Initialize checksum with header. */ - if (BITS (sum0) == 32) - { - sum0 = clib_mem_unaligned (&ip0->src_address, u32); - sum0 = - ip_csum_with_carry (sum0, - clib_mem_unaligned (&ip0->dst_address, u32)); - } - else - sum0 = clib_mem_unaligned (&ip0->src_address, u64); - - sum0 = ip_csum_with_carry - (sum0, clib_host_to_net_u32 (tcp_len0 + (ip0->protocol << 16))); - - /* Invalidate possibly old checksum. */ - tcp0->checksum = 0; - - u32 tcp_offset = sizeof (ip6_header_t); - sum0 = ip_incremental_checksum_buffer (vm, b0, tcp_offset, tcp_len0, sum0); - - tcp0->checksum = ~ip_csum_fold (sum0); -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE(hicn_pg_interest_node) ={ - .function = hicnpg_client_interest_node_fn, - .name = "hicnpg-interest", - .vector_size = sizeof(u32), - .format_trace = format_hicnpg_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - .n_errors = ARRAY_LEN(hicnpg_error_strings), - .error_strings = hicnpg_error_strings, - .n_next_nodes = HICNPG_N_NEXT, - .next_nodes = - { - [HICNPG_INTEREST_NEXT_V4_LOOKUP] = "ip4-lookup", - [HICNPG_INTEREST_NEXT_V6_LOOKUP] = "ip6-lookup", - [HICNPG_INTEREST_NEXT_DROP] = "error-drop" - }, -}; -/* *INDENT-ON* */ - -/* - * Next graph nodes, which reference the list in the actual registration - * block below - */ -typedef enum -{ - HICNPG_DATA_NEXT_DROP, - HICNPG_DATA_NEXT_LOOKUP4, - HICNPG_DATA_NEXT_LOOKUP6, - HICNPG_DATA_N_NEXT, -} hicnpg_data_next_t; - -/* Trace context struct */ -typedef struct -{ - u32 next_index; - u32 sw_if_index; - u8 pkt_type; - u16 msg_type; -} icnpg_data_trace_t; - -/* packet trace format function */ -static u8 * -format_hicnpg_data_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 *); - hicnpg_trace_t *t = va_arg (*args, hicnpg_trace_t *); - - s = format (s, "HICNPG: pkt: %d, msg %d, sw_if_index %d, next index %d", - (int) t->pkt_type, (int) t->msg_type, - t->sw_if_index, t->next_index); - return (s); -} - - -static_always_inline int -match_ip4_name (u32 * name, fib_prefix_t * prefix) -{ - u32 xor = 0; - - xor = *name & prefix->fp_addr.ip4.data_u32; - - return xor == prefix->fp_addr.ip4.data_u32; -} - -static_always_inline int -match_ip6_name (u8 * name, fib_prefix_t * prefix) -{ - union - { - u32x4 as_u32x4; - u64 as_u64[2]; - u32 as_u32[4]; - } xor_sum __attribute__ ((aligned (sizeof (u32x4)))); - - xor_sum.as_u64[0] = ((u64 *) name)[0] & prefix->fp_addr.ip6.as_u64[0]; - xor_sum.as_u64[1] = ((u64 *) name)[1] & prefix->fp_addr.ip6.as_u64[1]; - - return (xor_sum.as_u64[0] == prefix->fp_addr.ip6.as_u64[0]) && - (xor_sum.as_u64[1] == prefix->fp_addr.ip6.as_u64[1]); -} - - -/* - * Return 0,1,2. - * 0 matches - * 1 does not match and the prefix is ip4 - * 2 does not match and the prefix is ip6 - */ -static_always_inline u32 -match_data (vlib_buffer_t * b, fib_prefix_t * prefix) -{ - u8 *ptr = vlib_buffer_get_current (b); - u8 v = *ptr & 0xf0; - u32 next = 0; - - if (PREDICT_TRUE (v == 0x40 && ip46_address_is_ip4 (&prefix->fp_addr))) - { - if (!match_ip4_name ((u32 *) & (ptr[12]), prefix)) - next = 1; - } - else - if (PREDICT_TRUE (v == 0x60 && !ip46_address_is_ip4 (&prefix->fp_addr))) - { - if (!match_ip6_name (&(ptr[8]), prefix)) - next = 2; - } - - return next; -} - -/* - * Return 0,1,2. - * 0 matches - * 1 does not match and the prefix is ip4 - * 2 does not match and the prefix is ip6 - */ -static_always_inline u32 -match_interest (vlib_buffer_t * b, fib_prefix_t * prefix) -{ - u8 *ptr = vlib_buffer_get_current (b); - u8 v = *ptr & 0xf0; - u32 next = 0; - - if (PREDICT_TRUE (v == 0x40 && ip46_address_is_ip4 (&prefix->fp_addr))) - { - if (!match_ip4_name ((u32 *) & (ptr[16]), prefix)) - next = 1; - } - else - if (PREDICT_TRUE (v == 0x60 && !ip46_address_is_ip4 (&prefix->fp_addr))) - { - if (!match_ip6_name (&(ptr[24]), prefix)) - next = 2; - } - - return next; -} - - - - -/* - * Node function for the icn packet-generator client. The goal here is to - * manipulate/tweak a stream of packets that have been injected by the vpp - * packet generator to generate icn request traffic. - */ -static uword -hicnpg_client_data_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - u32 n_left_from, *from, *to_next; - hicnpg_data_next_t next_index; - u32 pkts_processed = 0; - u32 content_msgs_received = 0; - u32 bi0, bi1; - vlib_buffer_t *b0, *b1; - u8 pkt_type0 = 0, pkt_type1 = 0; - u16 msg_type0 = 1, msg_type1 = 1; - hicnpg_main_t *hpgm = &hicnpg_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 next0 = HICNPG_DATA_NEXT_DROP; - u32 next1 = HICNPG_DATA_NEXT_DROP; - u32 sw_if_index0, sw_if_index1; - - /* 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), STORE); - CLIB_PREFETCH (p3->data, (2 * CLIB_CACHE_LINE_BYTES), STORE); - } - - /* - * speculatively enqueue b0 and b1 to the current - * next frame - */ - 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]; - sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX]; - - next0 = - HICNPG_DATA_NEXT_DROP + match_data (b0, hpgm->pgen_clt_hicn_name); - next1 = - HICNPG_DATA_NEXT_DROP + match_data (b1, hpgm->pgen_clt_hicn_name); - - if (PREDICT_FALSE (vnet_get_feature_count - (vnet_buffer (b0)->feature_arc_index, - vnet_buffer (b0)->sw_if_index[VLIB_RX]) > 1)) - vnet_feature_next (&next0, b0); - - if (PREDICT_FALSE (vnet_get_feature_count - (vnet_buffer (b1)->feature_arc_index, - vnet_buffer (b1)->sw_if_index[VLIB_RX]) > 1)) - vnet_feature_next (&next1, b1); - - - if (next0 == HICNPG_DATA_NEXT_DROP) - { - /* Increment a counter */ - content_msgs_received++; - } - - if (next1 == HICNPG_DATA_NEXT_DROP) - { - /* Increment a counter */ - content_msgs_received++; - } - - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) - { - if (b0->flags & VLIB_BUFFER_IS_TRACED) - { - icnpg_data_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->pkt_type = pkt_type0; - t->msg_type = msg_type0; - t->sw_if_index = sw_if_index0; - t->next_index = next0; - } - if (b1->flags & VLIB_BUFFER_IS_TRACED) - { - icnpg_data_trace_t *t = - vlib_add_trace (vm, node, b1, sizeof (*t)); - t->pkt_type = pkt_type1; - t->msg_type = msg_type1; - 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); - pkts_processed += 2; - } - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 next0 = HICNPG_DATA_NEXT_DROP; - u32 sw_if_index0; - - /* speculatively enqueue b0 to the current next frame */ - 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 = - HICNPG_DATA_NEXT_DROP + match_data (b0, hpgm->pgen_clt_hicn_name); - - if (PREDICT_FALSE (vnet_get_feature_count - (vnet_buffer (b0)->feature_arc_index, - vnet_buffer (b0)->sw_if_index[VLIB_RX]) > 1)) - vnet_feature_next (&next0, b0); - - if (next0 == HICNPG_DATA_NEXT_DROP) - { - /* Increment a counter */ - content_msgs_received++; - } - - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - icnpg_data_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->pkt_type = pkt_type0; - t->msg_type = msg_type0; - 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); - - pkts_processed++; - } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - - vlib_node_increment_counter (vm, hicn_pg_data_node.index, - HICNPG_ERROR_PROCESSED, pkts_processed); - vlib_node_increment_counter (vm, hicn_pg_data_node.index, - HICNPG_ERROR_CONTENT_MSGS_RECEIVED, - content_msgs_received); - return (frame->n_vectors); -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE(hicn_pg_data_node) = -{ - .function = hicnpg_client_data_node_fn, - .name = "hicnpg-data", - .vector_size = sizeof(u32), - .format_trace = format_hicnpg_data_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - .n_errors = ARRAY_LEN(hicnpg_error_strings), - .error_strings = hicnpg_error_strings, - .n_next_nodes = HICNPG_DATA_N_NEXT, - .next_nodes = - { - [HICNPG_DATA_NEXT_DROP] = "error-drop", - [HICNPG_DATA_NEXT_LOOKUP4] = "ip4-lookup", - [HICNPG_DATA_NEXT_LOOKUP6] = "ip6-lookup", - }, -}; -/* *INDENT-ON* */ - -/* *INDENT-OFF* */ -VNET_FEATURE_INIT(hicn_data_input_ip4_arc, static)= - { - .arc_name = "ip4-unicast", - .node_name = "hicnpg-data", - .runs_before = VNET_FEATURES("ip4-inacl"), - }; -/* *INDENT-ON* */ - - -/* *INDENT-OFF* */ -VNET_FEATURE_INIT(hicn_data_input_ip6_arc, static)= - { - .arc_name = "ip6-unicast", - .node_name = "hicnpg-data", - .runs_before = VNET_FEATURES("ip6-inacl"), - }; -/* *INDENT-ON* */ - - -/* - * End of packet-generator client node - */ - -/* - * Beginning of packet-generation server node - */ - -/* Registration struct for a graph node */ -vlib_node_registration_t hicn_pg_server_node; - -/* Stats, which end up called "error" even though they aren't... */ -#define foreach_icnpg_server_error \ -_(PROCESSED, "hICN PG Server packets processed") \ -_(DROPPED, "hICN PG Server packets dropped") - -typedef enum -{ -#define _(sym,str) HICNPG_SERVER_ERROR_##sym, - foreach_icnpg_server_error -#undef _ - HICNPG_SERVER_N_ERROR, -} icnpg_server_error_t; - -static char *icnpg_server_error_strings[] = { -#define _(sym,string) string, - foreach_icnpg_server_error -#undef _ -}; - -/* - * Next graph nodes, which reference the list in the actual registration - * block below - */ -typedef enum -{ - HICNPG_SERVER_NEXT_V4_LOOKUP, - HICNPG_SERVER_NEXT_V6_LOOKUP, - HICNPG_SERVER_NEXT_DROP, - HICNPG_SERVER_N_NEXT, -} icnpg_server_next_t; - -/* Trace context struct */ -typedef struct -{ - u32 next_index; - u32 sw_if_index; - u8 pkt_type; - u16 msg_type; -} hicnpg_server_trace_t; - -/* packet trace format function */ -static u8 * -format_icnpg_server_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 *); - hicnpg_server_trace_t *t = va_arg (*args, hicnpg_server_trace_t *); - - s = - format (s, - "HICNPG SERVER: pkt: %d, msg %d, sw_if_index %d, next index %d", - (int) t->pkt_type, (int) t->msg_type, t->sw_if_index, - t->next_index); - return (s); -} - -/* - * Node function for the icn packet-generator server. - */ -static uword -hicnpg_node_server_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 n_left_from, *from, *to_next; - icnpg_server_next_t next_index; - u32 pkts_processed = 0, pkts_dropped = 0; - u32 bi0, bi1; - vlib_buffer_t *b0, *b1; - u8 pkt_type0 = 0, pkt_type1 = 0; - u16 msg_type0 = 0, msg_type1 = 0; - hicn_header_t *hicn0 = NULL, *hicn1 = NULL; - hicn_name_t name0, name1; - u16 namelen0, namelen1; - - hicnpg_server_main_t *hpgsm = &hicnpg_server_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 next0 = HICNPG_SERVER_NEXT_DROP; - u32 next1 = HICNPG_SERVER_NEXT_DROP; - u8 isv6_0 = 0; - u8 isv6_1 = 0; - u32 sw_if_index0, sw_if_index1; - - /* 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), STORE); - CLIB_PREFETCH (p3->data, (2 * CLIB_CACHE_LINE_BYTES), STORE); - } - - /* - * speculatively enqueue b0 and b1 to the current - * next frame - */ - 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]; - sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX]; - - vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0; - vnet_buffer (b1)->sw_if_index[VLIB_TX] = ~0; - - u32 match0 = match_interest (b0, hpgsm->pgen_srv_hicn_name); - u32 match1 = match_interest (b1, hpgsm->pgen_srv_hicn_name); - - if (match0) - { - next0 = match0 - 1; - } - else - if (hicn_interest_parse_pkt - (b0, &name0, &namelen0, &hicn0, &isv6_0) == HICN_ERROR_NONE) - { - /* this node grabs only interests */ - vlib_buffer_t *rb = NULL; - rb = vlib_get_buffer (vm, hpgsm->pgen_svr_buffer_idx); - - isv6_0 ? convert_interest_to_data_v6 (vm, b0, rb, - bi0) : - convert_interest_to_data_v4 (vm, b0, rb, bi0); - - next0 = - isv6_0 ? HICNPG_SERVER_NEXT_V6_LOOKUP : - HICNPG_SERVER_NEXT_V4_LOOKUP; - } - - if (match1) - { - next1 = match1 - 1; - } - else - if (hicn_interest_parse_pkt - (b1, &name1, &namelen1, &hicn1, &isv6_1) == HICN_ERROR_NONE) - { - /* this node grabs only interests */ - vlib_buffer_t *rb = NULL; - rb = vlib_get_buffer (vm, hpgsm->pgen_svr_buffer_idx); - - isv6_1 ? convert_interest_to_data_v6 (vm, b1, rb, - bi1) : - convert_interest_to_data_v4 (vm, b1, rb, bi1); - - next1 = - isv6_1 ? HICNPG_SERVER_NEXT_V6_LOOKUP : - HICNPG_SERVER_NEXT_V4_LOOKUP; - } - pkts_processed += 2; - - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) - { - if (b0->flags & VLIB_BUFFER_IS_TRACED) - { - hicnpg_server_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->pkt_type = pkt_type0; - t->msg_type = msg_type0; - t->sw_if_index = sw_if_index0; - t->next_index = next0; - } - if (b1->flags & VLIB_BUFFER_IS_TRACED) - { - hicnpg_server_trace_t *t = - vlib_add_trace (vm, node, b1, sizeof (*t)); - t->pkt_type = pkt_type1; - t->msg_type = msg_type1; - t->sw_if_index = sw_if_index1; - t->next_index = next1; - } - } - if (next0 == HICNPG_SERVER_NEXT_DROP) - { - pkts_dropped++; - } - if (next1 == HICNPG_SERVER_NEXT_DROP) - { - pkts_dropped++; - } - /* - * verify speculative enqueues, maybe switch current - * next frame - */ - 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 next0 = HICNPG_SERVER_NEXT_DROP; - u32 sw_if_index0 = ~0; - u8 isv6_0 = 0; - - /* speculatively enqueue b0 to the current next frame */ - 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]; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0; - - u32 match0 = match_interest (b0, hpgsm->pgen_srv_hicn_name); - - if (match0) - { - next0 = match0 - 1; - } - else - if (hicn_interest_parse_pkt - (b0, &name0, &namelen0, &hicn0, &isv6_0) == HICN_ERROR_NONE) - { - /* this node grabs only interests */ - vlib_buffer_t *rb = NULL; - rb = vlib_get_buffer (vm, hpgsm->pgen_svr_buffer_idx); - - isv6_0 ? convert_interest_to_data_v6 (vm, b0, rb, - bi0) : - convert_interest_to_data_v4 (vm, b0, rb, bi0); - - next0 = - isv6_0 ? HICNPG_SERVER_NEXT_V6_LOOKUP : - HICNPG_SERVER_NEXT_V4_LOOKUP; - } - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - hicnpg_server_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->pkt_type = pkt_type0; - t->msg_type = msg_type0; - t->sw_if_index = sw_if_index0; - t->next_index = next0; - } - pkts_processed += 1; - - if (next0 == HICNPG_SERVER_NEXT_DROP) - { - pkts_dropped++; - } - /* - * verify speculative enqueue, maybe switch current - * next frame - */ - 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); - } - - vlib_node_increment_counter (vm, hicn_pg_server_node.index, - HICNPG_SERVER_ERROR_PROCESSED, pkts_processed); - vlib_node_increment_counter (vm, hicn_pg_server_node.index, - HICNPG_SERVER_ERROR_DROPPED, pkts_dropped); - - return (frame->n_vectors); -} - -void -convert_interest_to_data_v4 (vlib_main_t * vm, vlib_buffer_t * b0, - vlib_buffer_t * rb, u32 bi0) -{ - hicn_header_t *h0 = vlib_buffer_get_current (b0); - - /* Get the packet length */ - u16 pkt_len = clib_net_to_host_u16 (h0->v4.ip.len); - - /* - * Rule of thumb: We want the size of the IP packet to be <= 1500 bytes - */ - u16 bytes_to_copy = rb->current_length; - if ((bytes_to_copy + pkt_len) > 1500) - { - bytes_to_copy = 1500 - pkt_len; - } - /* Add content to the data packet */ - vlib_buffer_add_data (vm, &bi0, rb->data, bytes_to_copy); - - b0 = vlib_get_buffer (vm, bi0); - - h0 = vlib_buffer_get_current (b0); - - ip4_address_t src_addr = h0->v4.ip.saddr; - h0->v4.ip.saddr = h0->v4.ip.daddr; - h0->v4.ip.daddr = src_addr; - - h0->v4.ip.len = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0)); - h0->v4.ip.csum = ip4_header_checksum ((ip4_header_t *) & (h0->v4.ip)); - calculate_tcp_checksum_v4 (vm, b0); -} - -void -convert_interest_to_data_v6 (vlib_main_t * vm, vlib_buffer_t * b0, - vlib_buffer_t * rb, u32 bi0) -{ - hicn_header_t *h0 = vlib_buffer_get_current (b0); - - /* Get the packet length */ - uint16_t pkt_len = - clib_net_to_host_u16 (h0->v6.ip.len) + sizeof (ip6_header_t); - - /* - * Figure out how many bytes we can add to the content - * - * Rule of thumb: We want the size of the IP packet to be <= 1400 bytes - */ - u16 bytes_to_copy = rb->current_length; - if ((bytes_to_copy + pkt_len) > 1500) - { - bytes_to_copy = 1500 - pkt_len; - } - /* Add content to the data packet */ - vlib_buffer_add_data (vm, &bi0, rb->data, bytes_to_copy); - - b0 = vlib_get_buffer (vm, bi0); - - h0 = vlib_buffer_get_current (b0); - ip6_address_t src_addr = h0->v6.ip.saddr; - h0->v6.ip.saddr = h0->v6.ip.daddr; - h0->v6.ip.daddr = src_addr; - - h0->v6.ip.len = clib_host_to_net_u16 (vlib_buffer_length_in_chain - (vm, b0) - sizeof (ip6_header_t)); - h0->v6.tcp.data_offset_and_reserved |= 0x0f; - h0->v6.tcp.urg_ptr = htons (0xffff); - - calculate_tcp_checksum_v6 (vm, b0); -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE(hicn_pg_server_node) = -{ - .function = hicnpg_node_server_fn, - .name = "hicnpg-server", - .vector_size = sizeof(u32), - .format_trace = format_icnpg_server_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - .n_errors = ARRAY_LEN(icnpg_server_error_strings), - .error_strings = icnpg_server_error_strings, - .n_next_nodes = HICNPG_SERVER_N_NEXT, - /* edit / add dispositions here */ - .next_nodes = - { - [HICNPG_SERVER_NEXT_V4_LOOKUP] = "ip4-lookup", - [HICNPG_SERVER_NEXT_V6_LOOKUP] = "ip6-lookup", - [HICNPG_SERVER_NEXT_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -/* *INDENT-OFF* */ -VNET_FEATURE_INIT(hicn_pg_server_ip6, static)= - { - .arc_name = "ip6-unicast", - .node_name = "hicnpg-server", - .runs_before = VNET_FEATURES("ip6-inacl"), - }; -/* *INDENT-ON* */ - -/* *INDENT-OFF* */ -VNET_FEATURE_INIT(hicn_pg_server_ip4, static)= - { - .arc_name = "ip4-unicast", - .node_name = "hicnpg-server", - .runs_before = VNET_FEATURES("ip4-inacl"), - }; -/* *INDENT-ON* */ - -/* - * End of packet-generator server node - */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: eval: (c-set-style "gnu") End: - */ -- cgit 1.2.3-korg