svm: refactor memfd and remove ssvm_eth

Change-Id: Icde296e956eb89ea3a17d547f04a833916ec6440
Signed-off-by: Florin Coras <fcoras@cisco.com>

1 files changed, 0 insertions, 345 deletions

diff --git a/src/vnet/devices/ssvm/node.c b/src/vnet/devices/ssvm/node.c
deleted file mode 100644
index 344b357662c..00000000000
--- a/src/vnet/devices/ssvm/node.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/*
- * Copyright (c) 2015 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 "ssvm_eth.h"
-
-vlib_node_registration_t ssvm_eth_input_node;
-
-typedef struct
-{
-  u32 next_index;
-  u32 sw_if_index;
-} ssvm_eth_input_trace_t;
-
-/* packet trace format function */
-static u8 *
-format_ssvm_eth_input_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 *);
-  ssvm_eth_input_trace_t *t = va_arg (*args, ssvm_eth_input_trace_t *);
-
-  s = format (s, "SSVM_ETH_INPUT: sw_if_index %d, next index %d",
-	      t->sw_if_index, t->next_index);
-  return s;
-}
-
-vlib_node_registration_t ssvm_eth_input_node;
-
-#define foreach_ssvm_eth_input_error \
-_(NO_BUFFERS, "Rx packet drops (no buffers)")
-
-typedef enum
-{
-#define _(sym,str) SSVM_ETH_INPUT_ERROR_##sym,
-  foreach_ssvm_eth_input_error
-#undef _
-    SSVM_ETH_INPUT_N_ERROR,
-} ssvm_eth_input_error_t;
-
-static char *ssvm_eth_input_error_strings[] = {
-#define _(sym,string) string,
-  foreach_ssvm_eth_input_error
-#undef _
-};
-
-typedef enum
-{
-  SSVM_ETH_INPUT_NEXT_DROP,
-  SSVM_ETH_INPUT_NEXT_ETHERNET_INPUT,
-  SSVM_ETH_INPUT_NEXT_IP4_INPUT,
-  SSVM_ETH_INPUT_NEXT_IP6_INPUT,
-  SSVM_ETH_INPUT_NEXT_MPLS_INPUT,
-  SSVM_ETH_INPUT_N_NEXT,
-} ssvm_eth_input_next_t;
-
-static inline uword
-ssvm_eth_device_input (ssvm_eth_main_t * em,
-		       ssvm_private_t * intfc, vlib_node_runtime_t * node)
-{
-  ssvm_shared_header_t *sh = intfc->sh;
-  vlib_main_t *vm = em->vlib_main;
-  svm_queue_t *q;
-  ssvm_eth_queue_elt_t *elt, *elts;
-  u32 elt_index;
-  u32 my_pid = intfc->my_pid;
-  int rx_queue_index;
-  u32 n_to_alloc = VLIB_FRAME_SIZE * 2;
-  u32 n_allocated, n_present_in_cache;
-  u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
-  vlib_buffer_free_list_t *fl;
-  u32 n_left_to_next, *to_next;
-  u32 next0;
-  u32 n_buffers;
-  u32 n_available;
-  u32 bi0, saved_bi0;
-  vlib_buffer_t *b0, *prev;
-  u32 saved_cache_size = 0;
-  ethernet_header_t *eh0;
-  u16 type0;
-  u32 n_rx_bytes = 0, l3_offset0;
-  u32 thread_index = vlib_get_thread_index ();
-  u32 trace_cnt __attribute__ ((unused)) = vlib_get_trace_count (vm, node);
-  volatile u32 *lock;
-  u32 *elt_indices;
-  uword n_trace = vlib_get_trace_count (vm, node);
-
-  /* Either side down? buh-bye... */
-  if (pointer_to_uword (sh->opaque[MASTER_ADMIN_STATE_INDEX]) == 0 ||
-      pointer_to_uword (sh->opaque[SLAVE_ADMIN_STATE_INDEX]) == 0)
-    return 0;
-
-  if (intfc->i_am_master)
-    q = (svm_queue_t *) (sh->opaque[TO_MASTER_Q_INDEX]);
-  else
-    q = (svm_queue_t *) (sh->opaque[TO_SLAVE_Q_INDEX]);
-
-  /* Nothing to do? */
-  if (q->cursize == 0)
-    return 0;
-
-  fl = vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
-
-  vec_reset_length (intfc->rx_queue);
-
-  lock = (u32 *) q;
-  while (__sync_lock_test_and_set (lock, 1))
-    ;
-  while (q->cursize > 0)
-    {
-      svm_queue_sub_raw (q, (u8 *) & elt_index);
-      ASSERT (elt_index < 2048);
-      vec_add1 (intfc->rx_queue, elt_index);
-    }
-  CLIB_MEMORY_BARRIER ();
-  *lock = 0;
-
-  n_present_in_cache = vec_len (em->buffer_cache);
-
-  if (vec_len (em->buffer_cache) < vec_len (intfc->rx_queue) * 2)
-    {
-      vec_validate (em->buffer_cache,
-		    n_to_alloc + vec_len (em->buffer_cache) - 1);
-      n_allocated =
-	vlib_buffer_alloc (vm, &em->buffer_cache[n_present_in_cache],
-			   n_to_alloc);
-
-      n_present_in_cache += n_allocated;
-      _vec_len (em->buffer_cache) = n_present_in_cache;
-    }
-
-  elts = (ssvm_eth_queue_elt_t *) (sh->opaque[CHUNK_POOL_INDEX]);
-
-  n_buffers = vec_len (intfc->rx_queue);
-  rx_queue_index = 0;
-
-  while (n_buffers > 0)
-    {
-      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
-      while (n_buffers > 0 && n_left_to_next > 0)
-	{
-	  elt = elts + intfc->rx_queue[rx_queue_index];
-
-	  saved_cache_size = n_present_in_cache;
-	  if (PREDICT_FALSE (saved_cache_size == 0))
-	    {
-	      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
-	      goto out;
-	    }
-	  saved_bi0 = bi0 = em->buffer_cache[--n_present_in_cache];
-	  b0 = vlib_get_buffer (vm, bi0);
-	  prev = 0;
-
-	  while (1)
-	    {
-	      vlib_buffer_init_for_free_list (b0, fl);
-
-	      b0->current_data = elt->current_data_hint;
-	      b0->current_length = elt->length_this_buffer;
-	      b0->total_length_not_including_first_buffer =
-		elt->total_length_not_including_first_buffer;
-
-	      clib_memcpy (b0->data + b0->current_data, elt->data,
-			   b0->current_length);
-
-	      if (PREDICT_FALSE (prev != 0))
-		prev->next_buffer = bi0;
-
-	      if (PREDICT_FALSE (elt->flags & SSVM_BUFFER_NEXT_PRESENT))
-		{
-		  prev = b0;
-		  if (PREDICT_FALSE (n_present_in_cache == 0))
-		    {
-		      vlib_put_next_frame (vm, node, next_index,
-					   n_left_to_next);
-		      goto out;
-		    }
-		  bi0 = em->buffer_cache[--n_present_in_cache];
-		  b0 = vlib_get_buffer (vm, bi0);
-		}
-	      else
-		break;
-	    }
-
-	  saved_cache_size = n_present_in_cache;
-
-	  to_next[0] = saved_bi0;
-	  to_next++;
-	  n_left_to_next--;
-
-	  b0 = vlib_get_buffer (vm, saved_bi0);
-	  eh0 = vlib_buffer_get_current (b0);
-
-	  type0 = clib_net_to_host_u16 (eh0->type);
-
-	  next0 = SSVM_ETH_INPUT_NEXT_ETHERNET_INPUT;
-
-	  if (type0 == ETHERNET_TYPE_IP4)
-	    next0 = SSVM_ETH_INPUT_NEXT_IP4_INPUT;
-	  else if (type0 == ETHERNET_TYPE_IP6)
-	    next0 = SSVM_ETH_INPUT_NEXT_IP6_INPUT;
-	  else if (type0 == ETHERNET_TYPE_MPLS)
-	    next0 = SSVM_ETH_INPUT_NEXT_MPLS_INPUT;
-
-	  l3_offset0 = ((next0 == SSVM_ETH_INPUT_NEXT_IP4_INPUT ||
-			 next0 == SSVM_ETH_INPUT_NEXT_IP6_INPUT ||
-			 next0 == SSVM_ETH_INPUT_NEXT_MPLS_INPUT) ?
-			sizeof (ethernet_header_t) : 0);
-
-	  n_rx_bytes += b0->current_length
-	    + b0->total_length_not_including_first_buffer;
-
-	  b0->current_data += l3_offset0;
-	  b0->current_length -= l3_offset0;
-	  b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
-
-	  vnet_buffer (b0)->sw_if_index[VLIB_RX] = intfc->vlib_hw_if_index;
-	  vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
-
-	  /*
-	   * Turn this on if you run into
-	   * "bad monkey" contexts, and you want to know exactly
-	   * which nodes they've visited... See main.c...
-	   */
-	  VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
-
-	  if (PREDICT_FALSE (n_trace > 0))
-	    {
-	      ssvm_eth_input_trace_t *tr;
-
-	      vlib_trace_buffer (vm, node, next0, b0, /* follow_chain */ 1);
-	      vlib_set_trace_count (vm, node, --n_trace);
-
-	      tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
-
-	      tr->next_index = next0;
-	      tr->sw_if_index = intfc->vlib_hw_if_index;
-	    }
-
-	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
-					   to_next, n_left_to_next,
-					   bi0, next0);
-	  n_buffers--;
-	  rx_queue_index++;
-	}
-
-      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
-    }
-
-out:
-  if (em->buffer_cache)
-    _vec_len (em->buffer_cache) = saved_cache_size;
-  else
-    ASSERT (saved_cache_size == 0);
-
-  ssvm_lock (sh, my_pid, 2);
-
-  ASSERT (vec_len (intfc->rx_queue) > 0);
-
-  n_available = (u32) pointer_to_uword (sh->opaque[CHUNK_POOL_NFREE]);
-  elt_indices = (u32 *) (sh->opaque[CHUNK_POOL_FREELIST_INDEX]);
-
-  clib_memcpy (&elt_indices[n_available], intfc->rx_queue,
-	       vec_len (intfc->rx_queue) * sizeof (u32));
-
-  n_available += vec_len (intfc->rx_queue);
-  sh->opaque[CHUNK_POOL_NFREE] = uword_to_pointer (n_available, void *);
-
-  ssvm_unlock (sh);
-
-  vlib_error_count (vm, node->node_index, SSVM_ETH_INPUT_ERROR_NO_BUFFERS,
-		    n_buffers);
-
-  vlib_increment_combined_counter
-    (vnet_get_main ()->interface_main.combined_sw_if_counters
-     + VNET_INTERFACE_COUNTER_RX, thread_index,
-     intfc->vlib_hw_if_index, rx_queue_index, n_rx_bytes);
-
-  vnet_device_increment_rx_packets (thread_index, rx_queue_index);
-
-  return rx_queue_index;
-}
-
-static uword
-ssvm_eth_input_node_fn (vlib_main_t * vm,
-			vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
-  ssvm_eth_main_t *em = &ssvm_eth_main;
-  ssvm_private_t *intfc;
-  uword n_rx_packets = 0;
-
-  vec_foreach (intfc, em->intfcs)
-  {
-    n_rx_packets += ssvm_eth_device_input (em, intfc, node);
-  }
-
-  return n_rx_packets;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (ssvm_eth_input_node) = {
-  .function = ssvm_eth_input_node_fn,
-  .name = "ssvm_eth_input",
-  .vector_size = sizeof (u32),
-  .format_trace = format_ssvm_eth_input_trace,
-  .type = VLIB_NODE_TYPE_INPUT,
-  .state = VLIB_NODE_STATE_DISABLED,
-
-  .n_errors = ARRAY_LEN(ssvm_eth_input_error_strings),
-  .error_strings = ssvm_eth_input_error_strings,
-
-  .n_next_nodes = SSVM_ETH_INPUT_N_NEXT,
-
-  /* edit / add dispositions here */
-  .next_nodes = {
-        [SSVM_ETH_INPUT_NEXT_DROP] = "error-drop",
-        [SSVM_ETH_INPUT_NEXT_ETHERNET_INPUT] = "ethernet-input",
-        [SSVM_ETH_INPUT_NEXT_IP4_INPUT] = "ip4-input",
-        [SSVM_ETH_INPUT_NEXT_IP6_INPUT] = "ip6-input",
-        [SSVM_ETH_INPUT_NEXT_MPLS_INPUT] = "mpls-input",
-  },
-};
-
-VLIB_NODE_FUNCTION_MULTIARCH (ssvm_eth_input_node, ssvm_eth_input_node_fn)
-/* *INDENT-ON* */
-
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */