diff options
Diffstat (limited to 'src/vnet/devices/ssvm/ssvm_eth.h')
| -rw-r--r-- | src/vnet/devices/ssvm/ssvm_eth.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/vnet/devices/ssvm/ssvm_eth.h b/src/vnet/devices/ssvm/ssvm_eth.h new file mode 100644 index 00000000000..f877df3cd33 --- /dev/null +++ b/src/vnet/devices/ssvm/ssvm_eth.h @@ -0,0 +1,141 @@ +/* + * 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: + */ |