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-rw-r--r--src/vnet/sr/sr_replicate.c491
1 files changed, 0 insertions, 491 deletions
diff --git a/src/vnet/sr/sr_replicate.c b/src/vnet/sr/sr_replicate.c
deleted file mode 100644
index fa5a68c31c2..00000000000
--- a/src/vnet/sr/sr_replicate.c
+++ /dev/null
@@ -1,491 +0,0 @@
-/*
- * sr_replicate.c: ipv6 segment routing replicator for multicast
- *
- * Copyright (c) 2016 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.
- */
-/**
- * @file
- * @brief Functions for replicating packets across SR tunnels.
- *
- * Leverages rte_pktmbuf_clone() so there is no memcpy for
- * invariant parts of the packet.
- *
- * @note Currently requires DPDK
-*/
-
-#if DPDK > 0 /* Cannot run replicate without DPDK */
-#include <vlib/vlib.h>
-#include <vnet/vnet.h>
-#include <vnet/pg/pg.h>
-#include <vnet/sr/sr.h>
-#include <vnet/devices/dpdk/dpdk.h>
-#include <vnet/devices/dpdk/dpdk_priv.h>
-#include <vnet/ip/ip.h>
-#include <vnet/fib/ip6_fib.h>
-
-#include <vppinfra/hash.h>
-#include <vppinfra/error.h>
-#include <vppinfra/elog.h>
-
-/**
- * @brief sr_replicate state.
- *
-*/
-typedef struct
-{
- /* convenience */
- vlib_main_t *vlib_main;
- vnet_main_t *vnet_main;
-} sr_replicate_main_t;
-
-sr_replicate_main_t sr_replicate_main;
-
-/**
- * @brief Information to display in packet trace.
- *
-*/
-typedef struct
-{
- ip6_address_t src, dst;
- u16 length;
- u32 next_index;
- u32 tunnel_index;
- u8 sr[256];
-} sr_replicate_trace_t;
-
-/**
- * @brief packet trace format function.
- *
- * @param *s u8 used for string output
- * @param *args va_list structured input to va_arg to output @ref sr_replicate_trace_t
- * @return *s u8 - formatted trace output
-*/
-static u8 *
-format_sr_replicate_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 *);
- sr_replicate_trace_t *t = va_arg (*args, sr_replicate_trace_t *);
- ip6_sr_main_t *sm = &sr_main;
- ip6_sr_tunnel_t *tun = pool_elt_at_index (sm->tunnels, t->tunnel_index);
- ip6_fib_t *rx_fib, *tx_fib;
-
- rx_fib = ip6_fib_get (tun->rx_fib_index);
- tx_fib = ip6_fib_get (tun->tx_fib_index);
-
- s = format
- (s, "SR-REPLICATE: next %s ip6 src %U dst %U len %u\n"
- " rx-fib-id %d tx-fib-id %d\n%U",
- "ip6-lookup",
- format_ip6_address, &t->src,
- format_ip6_address, &t->dst, t->length,
- rx_fib->table_id, tx_fib->table_id,
- format_ip6_sr_header, t->sr, 0 /* print_hmac */ );
- return s;
-
-}
-
-#define foreach_sr_replicate_error \
-_(REPLICATED, "sr packets replicated") \
-_(NO_BUFFERS, "error allocating buffers for replicas") \
-_(NO_REPLICAS, "no replicas were needed") \
-_(NO_BUFFER_DROPS, "sr no buffer drops")
-
-/**
- * @brief Struct for SR replicate errors
- */
-typedef enum
-{
-#define _(sym,str) SR_REPLICATE_ERROR_##sym,
- foreach_sr_replicate_error
-#undef _
- SR_REPLICATE_N_ERROR,
-} sr_replicate_error_t;
-
-/**
- * @brief Error strings for SR replicate
- */
-static char *sr_replicate_error_strings[] = {
-#define _(sym,string) string,
- foreach_sr_replicate_error
-#undef _
-};
-
-/**
- * @brief Defines next-nodes for packet processing.
- *
-*/
-typedef enum
-{
- SR_REPLICATE_NEXT_IP6_LOOKUP,
- SR_REPLICATE_N_NEXT,
-} sr_replicate_next_t;
-
-/**
- * @brief Single loop packet replicator.
- *
- * @node sr-replicate
- * @param vm vlib_main_t
- * @return frame->n_vectors uword
-*/
-static uword
-sr_replicate_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- dpdk_main_t *dm = &dpdk_main;
- u32 n_left_from, *from, *to_next;
- sr_replicate_next_t next_index;
- int pkts_replicated = 0;
- ip6_sr_main_t *sm = &sr_main;
- int no_buffer_drops = 0;
- vlib_buffer_free_list_t *fl;
- unsigned socket_id = rte_socket_id ();
-
- from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors;
- next_index = node->cached_next_index;
-
- fl = vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_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 > 0 && n_left_to_next > 0)
- {
- u32 bi0, hdr_bi0;
- vlib_buffer_t *b0, *orig_b0;
- struct rte_mbuf *orig_mb0 = 0, *hdr_mb0 = 0, *clone0 = 0;
- struct rte_mbuf **hdr_vec = 0, **rte_mbuf_vec = 0;
- ip6_sr_policy_t *pol0 = 0;
- ip6_sr_tunnel_t *t0 = 0;
- ip6_sr_header_t *hdr_sr0 = 0;
- ip6_header_t *ip0 = 0, *hdr_ip0 = 0;
- int num_replicas = 0;
- int i;
- u32 len_bytes = sizeof (ip6_header_t);
- u8 next_hdr, ip_next_hdr = IPPROTO_IPV6_ROUTE;
-
- bi0 = from[0];
-
- b0 = vlib_get_buffer (vm, bi0);
- orig_b0 = b0;
-
- pol0 = pool_elt_at_index (sm->policies,
- vnet_buffer (b0)->ip.save_protocol);
-
- ip0 = vlib_buffer_get_current (b0);
- /* Skip forward to the punch-in point */
- vlib_buffer_advance (b0, sizeof (*ip0));
- next_hdr = ip0->protocol;
-
- /* HBH must immediately follow ipv6 header */
- if (PREDICT_FALSE
- (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS))
- {
- ip6_hop_by_hop_ext_t *ext_hdr =
- (ip6_hop_by_hop_ext_t *) ip6_next_header (ip0);
- u32 ext_hdr_len = 0;
- ext_hdr_len = ip6_ext_header_len ((ip6_ext_header_t *) ext_hdr);
- len_bytes += ext_hdr_len;
- next_hdr = ext_hdr->next_hdr;
- ext_hdr->next_hdr = IPPROTO_IPV6_ROUTE;
- ip_next_hdr = IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS;
- /* Skip forward to the punch-in point */
- vlib_buffer_advance (b0, ext_hdr_len);
-
- }
-
- orig_mb0 = rte_mbuf_from_vlib_buffer (b0);
-
- i16 delta0 = vlib_buffer_length_in_chain (vm, orig_b0)
- - (i16) orig_mb0->pkt_len;
-
- u16 new_data_len0 = (u16) ((i16) orig_mb0->data_len + delta0);
- u16 new_pkt_len0 = (u16) ((i16) orig_mb0->pkt_len + delta0);
-
- orig_mb0->data_len = new_data_len0;
- orig_mb0->pkt_len = new_pkt_len0;
- orig_mb0->data_off += (u16) (b0->current_data);
-
- /*
- Before entering loop determine if we can allocate:
- - all the new HEADER RTE_MBUFs and assign them to a vector
- - all the clones
-
- if successful, then iterate over vectors of resources
-
- */
- num_replicas = vec_len (pol0->tunnel_indices);
-
- if (PREDICT_FALSE (num_replicas == 0))
- {
- b0->error = node->errors[SR_REPLICATE_ERROR_NO_REPLICAS];
- goto do_trace0;
- }
-
- vec_reset_length (hdr_vec);
- vec_reset_length (rte_mbuf_vec);
-
- for (i = 0; i < num_replicas; i++)
- {
- uint8_t nb_seg;
- struct rte_mbuf *clone0i;
- vlib_buffer_t *clone0_c, *clone_b0;
-
- t0 = vec_elt_at_index (sm->tunnels, pol0->tunnel_indices[i]);
- hdr_mb0 = rte_pktmbuf_alloc (dm->pktmbuf_pools[socket_id]);
-
- if (i < (num_replicas - 1))
- {
- /* Not the last tunnel to process */
- clone0 = rte_pktmbuf_clone
- (orig_mb0, dm->pktmbuf_pools[socket_id]);
- if (clone0 == 0)
- goto clone_fail;
- nb_seg = 0;
- clone0i = clone0;
- clone0_c = NULL;
- while ((clone0->nb_segs >= 1) && (nb_seg < clone0->nb_segs))
- {
-
- clone_b0 = vlib_buffer_from_rte_mbuf (clone0i);
- vlib_buffer_init_for_free_list (clone_b0, fl);
-
- ASSERT ((clone_b0->flags & VLIB_BUFFER_NEXT_PRESENT) ==
- 0);
- ASSERT (clone_b0->current_data == 0);
-
- clone_b0->current_data =
- (clone0i->buf_addr + clone0i->data_off) -
- (void *) clone_b0->data;
-
- clone_b0->current_length = clone0i->data_len;
- if (PREDICT_FALSE (clone0_c != NULL))
- {
- clone0_c->flags |= VLIB_BUFFER_NEXT_PRESENT;
- clone0_c->next_buffer =
- vlib_get_buffer_index (vm, clone_b0);
- }
- clone0_c = clone_b0;
- clone0i = clone0i->next;
- nb_seg++;
- }
- }
- else
- /* First tunnel to process, use original MB */
- clone0 = orig_mb0;
-
-
- if (PREDICT_FALSE (!clone0 || !hdr_mb0))
- {
- clone_fail:
- b0->error = node->errors[SR_REPLICATE_ERROR_NO_BUFFERS];
-
- vec_foreach_index (i, rte_mbuf_vec)
- {
- rte_pktmbuf_free (rte_mbuf_vec[i]);
- }
- vec_free (rte_mbuf_vec);
-
- vec_foreach_index (i, hdr_vec)
- {
- rte_pktmbuf_free (hdr_vec[i]);
- }
- vec_free (hdr_vec);
-
- goto do_trace0;
- }
-
- vec_add1 (hdr_vec, hdr_mb0);
- vec_add1 (rte_mbuf_vec, clone0);
-
- }
-
- for (i = 0; i < num_replicas; i++)
- {
- vlib_buffer_t *hdr_b0;
- u16 new_l0 = 0;
-
- t0 = vec_elt_at_index (sm->tunnels, pol0->tunnel_indices[i]);
- /* Our replicas */
- hdr_mb0 = hdr_vec[i];
- clone0 = rte_mbuf_vec[i];
-
- hdr_mb0->data_len = len_bytes + vec_len (t0->rewrite);
- hdr_mb0->pkt_len = hdr_mb0->data_len +
- vlib_buffer_length_in_chain (vm, orig_b0);
-
- hdr_b0 = vlib_buffer_from_rte_mbuf (hdr_mb0);
-
- vlib_buffer_init_for_free_list (hdr_b0, fl);
-
- memcpy (hdr_b0->data, ip0, len_bytes);
- memcpy (hdr_b0->data + len_bytes, t0->rewrite,
- vec_len (t0->rewrite));
-
- hdr_b0->current_data = 0;
- hdr_b0->current_length = len_bytes + vec_len (t0->rewrite);
- hdr_b0->flags = orig_b0->flags | VLIB_BUFFER_NEXT_PRESENT;
- hdr_b0->trace_index = orig_b0->trace_index;
- vnet_buffer (hdr_b0)->l2_classify.opaque_index = 0;
-
- hdr_b0->total_length_not_including_first_buffer =
- hdr_mb0->pkt_len - hdr_b0->current_length;
- vnet_buffer (hdr_b0)->sw_if_index[VLIB_TX] = t0->tx_fib_index;
-
- hdr_ip0 = (ip6_header_t *) hdr_b0->data;
- new_l0 = clib_net_to_host_u16 (ip0->payload_length) +
- vec_len (t0->rewrite);
- hdr_ip0->payload_length = clib_host_to_net_u16 (new_l0);
- hdr_sr0 = (ip6_sr_header_t *) ((u8 *) hdr_ip0 + len_bytes);
- /* $$$ tune */
- clib_memcpy (hdr_sr0, t0->rewrite, vec_len (t0->rewrite));
- hdr_sr0->protocol = next_hdr;
- hdr_ip0->protocol = ip_next_hdr;
-
- /* Copy dst address into the DA slot in the segment list */
- clib_memcpy (hdr_sr0->segments, ip0->dst_address.as_u64,
- sizeof (ip6_address_t));
-
- /* Rewrite the ip6 dst address */
- hdr_ip0->dst_address.as_u64[0] = t0->first_hop.as_u64[0];
- hdr_ip0->dst_address.as_u64[1] = t0->first_hop.as_u64[1];
-
- sr_fix_hmac (sm, hdr_ip0, hdr_sr0);
-
- /* prepend new header to invariant piece */
- hdr_mb0->next = clone0;
- hdr_b0->next_buffer =
- vlib_get_buffer_index (vm,
- vlib_buffer_from_rte_mbuf (clone0));
-
- /* update header's fields */
- hdr_mb0->pkt_len =
- (uint16_t) (hdr_mb0->data_len + clone0->pkt_len);
- hdr_mb0->nb_segs = (uint8_t) (clone0->nb_segs + 1);
-
- /* copy metadata from source packet */
- hdr_mb0->port = clone0->port;
- hdr_mb0->vlan_tci = clone0->vlan_tci;
- hdr_mb0->vlan_tci_outer = clone0->vlan_tci_outer;
- hdr_mb0->tx_offload = clone0->tx_offload;
- hdr_mb0->hash = clone0->hash;
-
- hdr_mb0->ol_flags = clone0->ol_flags & ~(IND_ATTACHED_MBUF);
-
- __rte_mbuf_sanity_check (hdr_mb0, 1);
-
- hdr_bi0 = vlib_get_buffer_index (vm, hdr_b0);
-
- to_next[0] = hdr_bi0;
- to_next += 1;
- n_left_to_next -= 1;
-
- if (n_left_to_next == 0)
- {
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- vlib_get_next_frame (vm, node, next_index,
- to_next, n_left_to_next);
-
- }
- pkts_replicated++;
- }
-
- from += 1;
- n_left_from -= 1;
-
- do_trace0:
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- sr_replicate_trace_t *tr = vlib_add_trace (vm, node,
- b0, sizeof (*tr));
- tr->tunnel_index = t0 - sm->tunnels;
- tr->length = 0;
- if (hdr_ip0)
- {
- memcpy (tr->src.as_u8, hdr_ip0->src_address.as_u8,
- sizeof (tr->src.as_u8));
- memcpy (tr->dst.as_u8, hdr_ip0->dst_address.as_u8,
- sizeof (tr->dst.as_u8));
- if (hdr_ip0->payload_length)
- tr->length = clib_net_to_host_u16
- (hdr_ip0->payload_length);
- }
- tr->next_index = next_index;
- if (hdr_sr0)
- memcpy (tr->sr, hdr_sr0, sizeof (tr->sr));
- }
-
- }
-
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
-
- vlib_node_increment_counter (vm, sr_replicate_node.index,
- SR_REPLICATE_ERROR_REPLICATED,
- pkts_replicated);
-
- vlib_node_increment_counter (vm, sr_replicate_node.index,
- SR_REPLICATE_ERROR_NO_BUFFER_DROPS,
- no_buffer_drops);
-
- return frame->n_vectors;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sr_replicate_node) = {
- .function = sr_replicate_node_fn,
- .name = "sr-replicate",
- .vector_size = sizeof (u32),
- .format_trace = format_sr_replicate_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_errors = ARRAY_LEN(sr_replicate_error_strings),
- .error_strings = sr_replicate_error_strings,
-
- .n_next_nodes = SR_REPLICATE_N_NEXT,
-
- .next_nodes = {
- [SR_REPLICATE_NEXT_IP6_LOOKUP] = "ip6-lookup",
- },
-};
-
-VLIB_NODE_FUNCTION_MULTIARCH (sr_replicate_node, sr_replicate_node_fn)
-/* *INDENT-ON* */
-
-clib_error_t *
-sr_replicate_init (vlib_main_t * vm)
-{
- sr_replicate_main_t *msm = &sr_replicate_main;
-
- msm->vlib_main = vm;
- msm->vnet_main = vnet_get_main ();
-
- return 0;
-}
-
-VLIB_INIT_FUNCTION (sr_replicate_init);
-
-#endif /* DPDK */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */