7db6ab03db
Both are out of sync for long time... Type: refactor Change-Id: I7de3170d35330fc172501d87655dfef91998b8fe Signed-off-by: Damjan Marion <damarion@cisco.com>
167 lines
4.8 KiB
C
167 lines
4.8 KiB
C
/*
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*------------------------------------------------------------------
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* Copyright (c) 2016 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*------------------------------------------------------------------
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*/
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/*
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* Copyright (C) 2011-2014 Universita` di Pisa. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <vppinfra/lock.h>
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typedef struct
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{
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CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
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clib_spinlock_t lockp;
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u8 *host_if_name;
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uword if_index;
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u32 hw_if_index;
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u32 sw_if_index;
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u32 clib_file_index;
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u32 per_interface_next_index;
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u8 is_admin_up;
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/* netmap */
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struct nmreq *req;
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u16 mem_region;
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int fd;
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struct netmap_if *nifp;
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u16 first_tx_ring;
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u16 last_tx_ring;
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u16 first_rx_ring;
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u16 last_rx_ring;
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} netmap_if_t;
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typedef struct
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{
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char *mem;
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u32 region_size;
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int refcnt;
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} netmap_mem_region_t;
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typedef struct
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{
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CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
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netmap_if_t *interfaces;
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/* bitmap of pending rx interfaces */
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uword *pending_input_bitmap;
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/* rx buffer cache */
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u32 **rx_buffers;
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/* hash of host interface names */
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mhash_t if_index_by_host_if_name;
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/* vector of memory regions */
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netmap_mem_region_t *mem_regions;
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/* first cpu index */
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u32 input_cpu_first_index;
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/* total cpu count */
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u32 input_cpu_count;
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} netmap_main_t;
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extern netmap_main_t netmap_main;
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extern vnet_device_class_t netmap_device_class;
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extern vlib_node_registration_t netmap_input_node;
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int netmap_create_if (vlib_main_t * vm, u8 * host_if_name, u8 * hw_addr_set,
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u8 is_pipe, u8 is_master, u32 * sw_if_index);
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int netmap_delete_if (vlib_main_t * vm, u8 * host_if_name);
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/* Macros and helper functions from sys/net/netmap_user.h */
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#ifdef _NET_NETMAP_H_
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#define _NETMAP_OFFSET(type, ptr, offset) \
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((type)(void *)((char *)(ptr) + (offset)))
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#define NETMAP_IF(_base, _ofs) _NETMAP_OFFSET(struct netmap_if *, _base, _ofs)
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#define NETMAP_TXRING(nifp, index) _NETMAP_OFFSET(struct netmap_ring *, \
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nifp, (nifp)->ring_ofs[index] )
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#define NETMAP_RXRING(nifp, index) _NETMAP_OFFSET(struct netmap_ring *, \
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nifp, (nifp)->ring_ofs[index + (nifp)->ni_tx_rings + 1] )
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#define NETMAP_BUF(ring, index) \
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((char *)(ring) + (ring)->buf_ofs + ((index)*(ring)->nr_buf_size))
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#define NETMAP_BUF_IDX(ring, buf) \
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( ((char *)(buf) - ((char *)(ring) + (ring)->buf_ofs) ) / \
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(ring)->nr_buf_size )
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static inline uint32_t
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nm_ring_next (struct netmap_ring *ring, uint32_t i)
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{
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return (PREDICT_FALSE (i + 1 == ring->num_slots) ? 0 : i + 1);
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}
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/*
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* Return 1 if we have pending transmissions in the tx ring.
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* When everything is complete ring->head = ring->tail + 1 (modulo ring size)
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*/
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static inline int
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nm_tx_pending (struct netmap_ring *ring)
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{
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return nm_ring_next (ring, ring->tail) != ring->head;
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}
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static inline uint32_t
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nm_ring_space (struct netmap_ring *ring)
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{
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int ret = ring->tail - ring->cur;
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if (ret < 0)
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ret += ring->num_slots;
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return ret;
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}
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#endif
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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