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-rw-r--r--src/vnet/devices/ssvm/ssvm_eth.h141
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diff --git a/src/vnet/devices/ssvm/ssvm_eth.h b/src/vnet/devices/ssvm/ssvm_eth.h
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+/*
+ * 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.
+ */
+#ifndef __included_ssvm_eth_h__
+#define __included_ssvm_eth_h__
+
+#include <vnet/vnet.h>
+
+#include <vppinfra/elog.h>
+#include <vppinfra/error.h>
+#include <vppinfra/format.h>
+#include <vppinfra/hash.h>
+#include <vppinfra/vec.h>
+#include <vppinfra/elog.h>
+#include <vlib/vlib.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/devices/devices.h>
+#include <vnet/ip/ip.h>
+#include <vnet/pg/pg.h>
+#include <vlibmemory/unix_shared_memory_queue.h>
+
+#include <svm/ssvm.h>
+
+extern vnet_device_class_t ssvm_eth_device_class;
+extern vlib_node_registration_t ssvm_eth_input_node;
+
+#define SSVM_BUFFER_SIZE \
+ (VLIB_BUFFER_DATA_SIZE + VLIB_BUFFER_PRE_DATA_SIZE)
+#define SSVM_PACKET_TYPE 1
+
+typedef struct
+{
+ /* Type of queue element */
+ u8 type;
+ u8 flags;
+#define SSVM_BUFFER_NEXT_PRESENT (1<<0)
+ u8 owner;
+ u8 tag;
+ i16 current_data_hint;
+ u16 length_this_buffer;
+ u16 total_length_not_including_first_buffer;
+ u16 pad;
+ u32 next_index;
+ /* offset 16 */
+ u8 data[SSVM_BUFFER_SIZE];
+ /* pad to an even multiple of 64 octets */
+ u8 pad2[CLIB_CACHE_LINE_BYTES - 16];
+} ssvm_eth_queue_elt_t;
+
+typedef struct
+{
+ /* vector of point-to-point connections */
+ ssvm_private_t *intfcs;
+
+ u32 *buffer_cache;
+ u32 *chunk_cache;
+
+ /* Configurable parameters */
+ /* base address for next placement */
+ u64 next_base_va;
+ u64 segment_size;
+ u64 nbuffers;
+ u64 queue_elts;
+
+ /* Segment names */
+ u8 **names;
+
+ /* convenience */
+ vlib_main_t *vlib_main;
+ vnet_main_t *vnet_main;
+ elog_main_t *elog_main;
+} ssvm_eth_main_t;
+
+ssvm_eth_main_t ssvm_eth_main;
+
+typedef enum
+{
+ CHUNK_POOL_FREELIST_INDEX = 0,
+ CHUNK_POOL_INDEX,
+ CHUNK_POOL_NFREE,
+ TO_MASTER_Q_INDEX,
+ TO_SLAVE_Q_INDEX,
+ MASTER_ADMIN_STATE_INDEX,
+ SLAVE_ADMIN_STATE_INDEX,
+} ssvm_eth_opaque_index_t;
+
+/*
+ * debug scaffolding.
+ */
+static inline void
+ssvm_eth_validate_freelists (int need_lock)
+{
+#if CLIB_DEBUG > 0
+ ssvm_eth_main_t *em = &ssvm_eth_main;
+ ssvm_private_t *intfc;
+ ssvm_shared_header_t *sh;
+ u32 *elt_indices;
+ u32 n_available;
+ int i;
+
+ for (i = 0; i < vec_len (em->intfcs); i++)
+ {
+ intfc = em->intfcs + i;
+ sh = intfc->sh;
+ u32 my_pid = intfc->my_pid;
+
+ if (need_lock)
+ ssvm_lock (sh, my_pid, 15);
+
+ elt_indices = (u32 *) (sh->opaque[CHUNK_POOL_FREELIST_INDEX]);
+ n_available = (u32) (uword) (sh->opaque[CHUNK_POOL_NFREE]);
+
+ for (i = 0; i < n_available; i++)
+ ASSERT (elt_indices[i] < 2048);
+
+ if (need_lock)
+ ssvm_unlock (sh);
+ }
+#endif
+}
+
+#endif /* __included_ssvm_eth_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */