--- /dev/null
+/*
+ *------------------------------------------------------------------
+ * 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.
+ *------------------------------------------------------------------
+ */
+/*
+ * Copyright (C) 2011-2014 Universita` di Pisa. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+typedef struct
+{
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ volatile u32 *lockp;
+ u8 *host_if_name;
+ uword if_index;
+ u32 hw_if_index;
+ u32 sw_if_index;
+ u32 unix_file_index;
+
+ u32 per_interface_next_index;
+ u8 is_admin_up;
+
+ /* netmap */
+ struct nmreq *req;
+ u16 mem_region;
+ int fd;
+ struct netmap_if *nifp;
+ u16 first_tx_ring;
+ u16 last_tx_ring;
+ u16 first_rx_ring;
+ u16 last_rx_ring;
+
+} netmap_if_t;
+
+typedef struct
+{
+ char *mem;
+ u32 region_size;
+ int refcnt;
+} netmap_mem_region_t;
+
+typedef struct
+{
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ netmap_if_t *interfaces;
+
+ /* bitmap of pending rx interfaces */
+ uword *pending_input_bitmap;
+
+ /* rx buffer cache */
+ u32 **rx_buffers;
+
+ /* hash of host interface names */
+ mhash_t if_index_by_host_if_name;
+
+ /* vector of memory regions */
+ netmap_mem_region_t *mem_regions;
+
+ /* first cpu index */
+ u32 input_cpu_first_index;
+
+ /* total cpu count */
+ u32 input_cpu_count;
+} netmap_main_t;
+
+netmap_main_t netmap_main;
+extern vnet_device_class_t netmap_device_class;
+extern vlib_node_registration_t netmap_input_node;
+
+int netmap_create_if (vlib_main_t * vm, u8 * host_if_name, u8 * hw_addr_set,
+ u8 is_pipe, u8 is_master, u32 * sw_if_index);
+int netmap_delete_if (vlib_main_t * vm, u8 * host_if_name);
+
+
+/* Macros and helper functions from sys/net/netmap_user.h */
+
+#ifdef _NET_NETMAP_H_
+
+#define _NETMAP_OFFSET(type, ptr, offset) \
+ ((type)(void *)((char *)(ptr) + (offset)))
+
+#define NETMAP_IF(_base, _ofs) _NETMAP_OFFSET(struct netmap_if *, _base, _ofs)
+
+#define NETMAP_TXRING(nifp, index) _NETMAP_OFFSET(struct netmap_ring *, \
+ nifp, (nifp)->ring_ofs[index] )
+
+#define NETMAP_RXRING(nifp, index) _NETMAP_OFFSET(struct netmap_ring *, \
+ nifp, (nifp)->ring_ofs[index + (nifp)->ni_tx_rings + 1] )
+
+#define NETMAP_BUF(ring, index) \
+ ((char *)(ring) + (ring)->buf_ofs + ((index)*(ring)->nr_buf_size))
+
+#define NETMAP_BUF_IDX(ring, buf) \
+ ( ((char *)(buf) - ((char *)(ring) + (ring)->buf_ofs) ) / \
+ (ring)->nr_buf_size )
+
+static inline uint32_t
+nm_ring_next (struct netmap_ring *ring, uint32_t i)
+{
+ return (PREDICT_FALSE (i + 1 == ring->num_slots) ? 0 : i + 1);
+}
+
+
+/*
+ * Return 1 if we have pending transmissions in the tx ring.
+ * When everything is complete ring->head = ring->tail + 1 (modulo ring size)
+ */
+static inline int
+nm_tx_pending (struct netmap_ring *ring)
+{
+ return nm_ring_next (ring, ring->tail) != ring->head;
+}
+
+static inline uint32_t
+nm_ring_space (struct netmap_ring *ring)
+{
+ int ret = ring->tail - ring->cur;
+ if (ret < 0)
+ ret += ring->num_slots;
+ return ret;
+}
+#endif
+
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff