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-rw-r--r--vnet/vnet/dpo/mpls_label_dpo.c570
1 files changed, 0 insertions, 570 deletions
diff --git a/vnet/vnet/dpo/mpls_label_dpo.c b/vnet/vnet/dpo/mpls_label_dpo.c
deleted file mode 100644
index bbdc9666503..00000000000
--- a/vnet/vnet/dpo/mpls_label_dpo.c
+++ /dev/null
@@ -1,570 +0,0 @@
-/*
- * 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.
- */
-
-#include <vnet/ip/ip.h>
-#include <vnet/dpo/mpls_label_dpo.h>
-#include <vnet/mpls/mpls.h>
-
-/*
- * pool of all MPLS Label DPOs
- */
-mpls_label_dpo_t *mpls_label_dpo_pool;
-
-static mpls_label_dpo_t *
-mpls_label_dpo_alloc (void)
-{
- mpls_label_dpo_t *mld;
-
- pool_get_aligned(mpls_label_dpo_pool, mld, CLIB_CACHE_LINE_BYTES);
- memset(mld, 0, sizeof(*mld));
-
- dpo_reset(&mld->mld_dpo);
-
- return (mld);
-}
-
-static index_t
-mpls_label_dpo_get_index (mpls_label_dpo_t *mld)
-{
- return (mld - mpls_label_dpo_pool);
-}
-
-index_t
-mpls_label_dpo_create (mpls_label_t *label_stack,
- mpls_eos_bit_t eos,
- u8 ttl,
- u8 exp,
- dpo_proto_t payload_proto,
- const dpo_id_t *dpo)
-{
- mpls_label_dpo_t *mld;
- u32 ii;
-
- mld = mpls_label_dpo_alloc();
- mld->mld_n_labels = vec_len(label_stack);
- mld->mld_n_hdr_bytes = mld->mld_n_labels * sizeof(mld->mld_hdr[0]);
- mld->mld_payload_proto = payload_proto;
-
- /*
- * construct label rewrite headers for each value value passed.
- * get the header in network byte order since we will paint it
- * on a packet in the data-plane
- */
-
- for (ii = 0; ii < mld->mld_n_labels-1; ii++)
- {
- vnet_mpls_uc_set_label(&mld->mld_hdr[ii].label_exp_s_ttl, label_stack[ii]);
- vnet_mpls_uc_set_ttl(&mld->mld_hdr[ii].label_exp_s_ttl, 255);
- vnet_mpls_uc_set_exp(&mld->mld_hdr[ii].label_exp_s_ttl, 0);
- vnet_mpls_uc_set_s(&mld->mld_hdr[ii].label_exp_s_ttl, MPLS_NON_EOS);
- mld->mld_hdr[ii].label_exp_s_ttl =
- clib_host_to_net_u32(mld->mld_hdr[ii].label_exp_s_ttl);
- }
-
- /*
- * the inner most label
- */
- ii = mld->mld_n_labels-1;
-
- vnet_mpls_uc_set_label(&mld->mld_hdr[ii].label_exp_s_ttl, label_stack[ii]);
- vnet_mpls_uc_set_ttl(&mld->mld_hdr[ii].label_exp_s_ttl, ttl);
- vnet_mpls_uc_set_exp(&mld->mld_hdr[ii].label_exp_s_ttl, exp);
- vnet_mpls_uc_set_s(&mld->mld_hdr[ii].label_exp_s_ttl, eos);
- mld->mld_hdr[ii].label_exp_s_ttl =
- clib_host_to_net_u32(mld->mld_hdr[ii].label_exp_s_ttl);
-
- /*
- * stack this label objct on its parent.
- */
- dpo_stack(DPO_MPLS_LABEL,
- mld->mld_payload_proto,
- &mld->mld_dpo,
- dpo);
-
- return (mpls_label_dpo_get_index(mld));
-}
-
-u8*
-format_mpls_label_dpo (u8 *s, va_list *args)
-{
- index_t index = va_arg (*args, index_t);
- u32 indent = va_arg (*args, u32);
- mpls_unicast_header_t hdr;
- mpls_label_dpo_t *mld;
- u32 ii;
-
- mld = mpls_label_dpo_get(index);
-
- s = format(s, "mpls-label:[%d]:", index);
-
- for (ii = 0; ii < mld->mld_n_labels; ii++)
- {
- hdr.label_exp_s_ttl =
- clib_net_to_host_u32(mld->mld_hdr[ii].label_exp_s_ttl);
- s = format(s, "%U", format_mpls_header, hdr);
- }
-
- s = format(s, "\n%U", format_white_space, indent);
- s = format(s, "%U", format_dpo_id, &mld->mld_dpo, indent+2);
-
- return (s);
-}
-
-static void
-mpls_label_dpo_lock (dpo_id_t *dpo)
-{
- mpls_label_dpo_t *mld;
-
- mld = mpls_label_dpo_get(dpo->dpoi_index);
-
- mld->mld_locks++;
-}
-
-static void
-mpls_label_dpo_unlock (dpo_id_t *dpo)
-{
- mpls_label_dpo_t *mld;
-
- mld = mpls_label_dpo_get(dpo->dpoi_index);
-
- mld->mld_locks--;
-
- if (0 == mld->mld_locks)
- {
- dpo_reset(&mld->mld_dpo);
- pool_put(mpls_label_dpo_pool, mld);
- }
-}
-
-/**
- * @brief A struct to hold tracing information for the MPLS label imposition
- * node.
- */
-typedef struct mpls_label_imposition_trace_t_
-{
- /**
- * The MPLS header imposed
- */
- mpls_unicast_header_t hdr;
-} mpls_label_imposition_trace_t;
-
-always_inline uword
-mpls_label_imposition_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame,
- u8 payload_is_ip4,
- u8 payload_is_ip6)
-{
- u32 n_left_from, next_index, * from, * to_next;
-
- from = vlib_frame_vector_args (from_frame);
- n_left_from = 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)
- {
- mpls_unicast_header_t *hdr0, *hdr1;
- mpls_label_dpo_t *mld0, *mld1;
- u32 bi0, mldi0, bi1, mldi1;
- vlib_buffer_t * b0, *b1;
- u32 next0, next1;
- u8 ttl0, ttl1;
-
- bi0 = to_next[0] = from[0];
- bi1 = to_next[1] = from[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, STORE);
- vlib_prefetch_buffer_header (p3, STORE);
-
- CLIB_PREFETCH (p2->data, sizeof (hdr0[0]), STORE);
- CLIB_PREFETCH (p3->data, sizeof (hdr0[0]), STORE);
- }
-
- 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);
-
- /* dst lookup was done by ip4 lookup */
- mldi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
- mldi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
- mld0 = mpls_label_dpo_get(mldi0);
- mld1 = mpls_label_dpo_get(mldi1);
-
- if (payload_is_ip4)
- {
- /*
- * decrement the TTL on ingress to the LSP
- */
- ip4_header_t * ip0 = vlib_buffer_get_current(b0);
- ip4_header_t * ip1 = vlib_buffer_get_current(b1);
- u32 checksum0;
- u32 checksum1;
-
- checksum0 = ip0->checksum + clib_host_to_net_u16 (0x0100);
- checksum1 = ip1->checksum + clib_host_to_net_u16 (0x0100);
-
- checksum0 += checksum0 >= 0xffff;
- checksum1 += checksum1 >= 0xffff;
-
- ip0->checksum = checksum0;
- ip1->checksum = checksum1;
-
- ip0->ttl -= 1;
- ip1->ttl -= 1;
-
- ttl1 = ip1->ttl;
- ttl0 = ip0->ttl;
- }
- else if (payload_is_ip6)
- {
- /*
- * decrement the TTL on ingress to the LSP
- */
- ip6_header_t * ip0 = vlib_buffer_get_current(b0);
- ip6_header_t * ip1 = vlib_buffer_get_current(b1);
-
-
- ip0->hop_limit -= 1;
- ip1->hop_limit -= 1;
-
- ttl0 = ip0->hop_limit;
- ttl1 = ip1->hop_limit;
- }
- else
- {
- /*
- * else, the packet to be encapped is an MPLS packet
- */
- if (PREDICT_TRUE(vnet_buffer(b0)->mpls.first))
- {
- /*
- * The first label to be imposed on the packet. this is a label swap.
- * in which case we stashed the TTL and EXP bits in the
- * packet in the lookup node
- */
- ASSERT(0 != vnet_buffer (b0)->mpls.ttl);
-
- ttl0 = vnet_buffer(b0)->mpls.ttl - 1;
- }
- else
- {
- /*
- * not the first label. implying we are recusring down a chain of
- * output labels.
- * Each layer is considered a new LSP - hence the TTL is reset.
- */
- ttl0 = 255;
- }
- if (PREDICT_TRUE(vnet_buffer(b1)->mpls.first))
- {
- ASSERT(1 != vnet_buffer (b1)->mpls.ttl);
- ttl1 = vnet_buffer(b1)->mpls.ttl - 1;
- }
- else
- {
- ttl1 = 255;
- }
- }
- vnet_buffer(b0)->mpls.first = 0;
- vnet_buffer(b1)->mpls.first = 0;
-
- /* Paint the MPLS header */
- vlib_buffer_advance(b0, -(mld0->mld_n_hdr_bytes));
- vlib_buffer_advance(b1, -(mld1->mld_n_hdr_bytes));
-
- hdr0 = vlib_buffer_get_current(b0);
- hdr1 = vlib_buffer_get_current(b1);
-
- clib_memcpy(hdr0, mld0->mld_hdr, mld0->mld_n_hdr_bytes);
- clib_memcpy(hdr1, mld1->mld_hdr, mld1->mld_n_hdr_bytes);
-
- /* fixup the TTL for the inner most label */
- hdr0 = hdr0 + (mld0->mld_n_labels - 1);
- hdr1 = hdr1 + (mld1->mld_n_labels - 1);
- ((char*)hdr0)[3] = ttl0;
- ((char*)hdr1)[3] = ttl1;
-
- next0 = mld0->mld_dpo.dpoi_next_node;
- next1 = mld1->mld_dpo.dpoi_next_node;
- vnet_buffer(b0)->ip.adj_index[VLIB_TX] = mld0->mld_dpo.dpoi_index;
- vnet_buffer(b1)->ip.adj_index[VLIB_TX] = mld1->mld_dpo.dpoi_index;
-
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- mpls_label_imposition_trace_t *tr =
- vlib_add_trace (vm, node, b0, sizeof (*tr));
- tr->hdr = *hdr0;
- }
- if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
- {
- mpls_label_imposition_trace_t *tr =
- vlib_add_trace (vm, node, b1, sizeof (*tr));
- tr->hdr = *hdr1;
- }
-
- 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)
- {
- mpls_unicast_header_t *hdr0;
- mpls_label_dpo_t *mld0;
- vlib_buffer_t * b0;
- u32 bi0, mldi0;
- u32 next0;
- u8 ttl;
-
- 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);
-
- /* dst lookup was done by ip4 lookup */
- mldi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
- mld0 = mpls_label_dpo_get(mldi0);
-
- if (payload_is_ip4)
- {
- /*
- * decrement the TTL on ingress to the LSP
- */
- ip4_header_t * ip0 = vlib_buffer_get_current(b0);
- u32 checksum0;
-
- checksum0 = ip0->checksum + clib_host_to_net_u16 (0x0100);
- checksum0 += checksum0 >= 0xffff;
-
- ip0->checksum = checksum0;
- ip0->ttl -= 1;
- ttl = ip0->ttl;
- }
- else if (payload_is_ip6)
- {
- /*
- * decrement the TTL on ingress to the LSP
- */
- ip6_header_t * ip0 = vlib_buffer_get_current(b0);
-
- ip0->hop_limit -= 1;
- ttl = ip0->hop_limit;
- }
- else
- {
- /*
- * else, the packet to be encapped is an MPLS packet
- */
- if (vnet_buffer(b0)->mpls.first)
- {
- /*
- * The first label to be imposed on the packet. this is a label swap.
- * in which case we stashed the TTL and EXP bits in the
- * packet in the lookup node
- */
- ASSERT(0 != vnet_buffer (b0)->mpls.ttl);
-
- ttl = vnet_buffer(b0)->mpls.ttl - 1;
- }
- else
- {
- /*
- * not the first label. implying we are recusring down a chain of
- * output labels.
- * Each layer is considered a new LSP - hence the TTL is reset.
- */
- ttl = 255;
- }
- }
- vnet_buffer(b0)->mpls.first = 0;
-
- /* Paint the MPLS header */
- vlib_buffer_advance(b0, -(mld0->mld_n_hdr_bytes));
- hdr0 = vlib_buffer_get_current(b0);
- clib_memcpy(hdr0, mld0->mld_hdr, mld0->mld_n_hdr_bytes);
-
- /* fixup the TTL for the inner most label */
- hdr0 = hdr0 + (mld0->mld_n_labels - 1);
- ((char*)hdr0)[3] = ttl;
-
- next0 = mld0->mld_dpo.dpoi_next_node;
- vnet_buffer(b0)->ip.adj_index[VLIB_TX] = mld0->mld_dpo.dpoi_index;
-
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- mpls_label_imposition_trace_t *tr =
- vlib_add_trace (vm, node, b0, sizeof (*tr));
- tr->hdr = *hdr0;
- }
-
- 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 from_frame->n_vectors;
-}
-
-static u8 *
-format_mpls_label_imposition_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 *);
- mpls_label_imposition_trace_t * t;
- mpls_unicast_header_t hdr;
- uword indent;
-
- t = va_arg (*args, mpls_label_imposition_trace_t *);
- indent = format_get_indent (s);
- hdr.label_exp_s_ttl = clib_net_to_host_u32(t->hdr.label_exp_s_ttl);
-
- s = format (s, "%Umpls-header:%U",
- format_white_space, indent,
- format_mpls_header, hdr);
- return (s);
-}
-
-static uword
-mpls_label_imposition (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return (mpls_label_imposition_inline(vm, node, frame, 0, 0));
-}
-
-VLIB_REGISTER_NODE (mpls_label_imposition_node) = {
- .function = mpls_label_imposition,
- .name = "mpls-label-imposition",
- .vector_size = sizeof (u32),
-
- .format_trace = format_mpls_label_imposition_trace,
- .n_next_nodes = 1,
- .next_nodes = {
- [0] = "error-drop",
- }
-};
-VLIB_NODE_FUNCTION_MULTIARCH (mpls_label_imposition_node,
- mpls_label_imposition)
-
-static uword
-ip4_mpls_label_imposition (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return (mpls_label_imposition_inline(vm, node, frame, 1, 0));
-}
-
-VLIB_REGISTER_NODE (ip4_mpls_label_imposition_node) = {
- .function = ip4_mpls_label_imposition,
- .name = "ip4-mpls-label-imposition",
- .vector_size = sizeof (u32),
-
- .format_trace = format_mpls_label_imposition_trace,
- .n_next_nodes = 1,
- .next_nodes = {
- [0] = "error-drop",
- }
-};
-VLIB_NODE_FUNCTION_MULTIARCH (ip4_mpls_label_imposition_node,
- ip4_mpls_label_imposition)
-
-static uword
-ip6_mpls_label_imposition (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- return (mpls_label_imposition_inline(vm, node, frame, 0, 1));
-}
-
-VLIB_REGISTER_NODE (ip6_mpls_label_imposition_node) = {
- .function = ip6_mpls_label_imposition,
- .name = "ip6-mpls-label-imposition",
- .vector_size = sizeof (u32),
-
- .format_trace = format_mpls_label_imposition_trace,
- .n_next_nodes = 1,
- .next_nodes = {
- [0] = "error-drop",
- }
-};
-VLIB_NODE_FUNCTION_MULTIARCH (ip6_mpls_label_imposition_node,
- ip6_mpls_label_imposition)
-
-static void
-mpls_label_dpo_mem_show (void)
-{
- fib_show_memory_usage("MPLS label",
- pool_elts(mpls_label_dpo_pool),
- pool_len(mpls_label_dpo_pool),
- sizeof(mpls_label_dpo_t));
-}
-
-const static dpo_vft_t mld_vft = {
- .dv_lock = mpls_label_dpo_lock,
- .dv_unlock = mpls_label_dpo_unlock,
- .dv_format = format_mpls_label_dpo,
- .dv_mem_show = mpls_label_dpo_mem_show,
-};
-
-const static char* const mpls_label_imp_ip4_nodes[] =
-{
- "ip4-mpls-label-imposition",
- NULL,
-};
-const static char* const mpls_label_imp_ip6_nodes[] =
-{
- "ip6-mpls-label-imposition",
- NULL,
-};
-const static char* const mpls_label_imp_mpls_nodes[] =
-{
- "mpls-label-imposition",
- NULL,
-};
-const static char* const * const mpls_label_imp_nodes[DPO_PROTO_NUM] =
-{
- [DPO_PROTO_IP4] = mpls_label_imp_ip4_nodes,
- [DPO_PROTO_IP6] = mpls_label_imp_ip6_nodes,
- [DPO_PROTO_MPLS] = mpls_label_imp_mpls_nodes,
-};
-
-
-void
-mpls_label_dpo_module_init (void)
-{
- dpo_register(DPO_MPLS_LABEL, &mld_vft, mpls_label_imp_nodes);
-}