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-rw-r--r--src/plugins/af_packet/af_packet.h179
1 files changed, 179 insertions, 0 deletions
diff --git a/src/plugins/af_packet/af_packet.h b/src/plugins/af_packet/af_packet.h
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+++ b/src/plugins/af_packet/af_packet.h
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+/*
+ *------------------------------------------------------------------
+ * af_packet.h - linux kernel packet interface header file
+ *
+ * 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.
+ *------------------------------------------------------------------
+ */
+
+#include <linux/if_packet.h>
+
+#include <vppinfra/lock.h>
+#include <vlib/log.h>
+
+typedef struct tpacket_block_desc block_desc_t;
+typedef struct tpacket_req tpacket_req_t;
+typedef struct tpacket_req3 tpacket_req3_t;
+typedef struct tpacket2_hdr tpacket2_hdr_t;
+typedef struct tpacket3_hdr tpacket3_hdr_t;
+
+typedef union _tpacket_req_u
+{
+ tpacket_req_t req;
+ tpacket_req3_t req3;
+} tpacket_req_u_t;
+
+typedef enum
+{
+ AF_PACKET_IF_MODE_ETHERNET = 1,
+ AF_PACKET_IF_MODE_IP = 2
+} af_packet_if_mode_t;
+
+typedef enum
+{
+ AF_PACKET_IF_FLAGS_QDISC_BYPASS = 1,
+ AF_PACKET_IF_FLAGS_CKSUM_GSO = 2,
+ AF_PACKET_IF_FLAGS_FANOUT = 4,
+ AF_PACKET_IF_FLAGS_VERSION_2 = 8,
+} af_packet_if_flags_t;
+
+typedef struct
+{
+ u32 sw_if_index;
+ u8 host_if_name[64];
+} af_packet_if_detail_t;
+
+typedef struct
+{
+ u8 *ring_start_addr;
+ u32 ring_size;
+} af_packet_ring_t;
+
+typedef struct
+{
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ clib_spinlock_t lockp;
+ int fd;
+ union
+ {
+ tpacket_req_u_t *rx_req;
+ tpacket_req_u_t *tx_req;
+ };
+
+ union
+ {
+ u8 **rx_ring;
+ u8 **tx_ring;
+ };
+
+ union
+ {
+ u32 next_rx_block;
+ u32 next_rx_frame;
+ u32 next_tx_frame;
+ };
+
+ u16 queue_id;
+ u32 queue_index;
+
+ u32 clib_file_index;
+
+ u32 rx_frame_offset;
+ u16 num_rx_pkts;
+ u8 is_rx_pending;
+ u8 is_tx_pending;
+ vnet_hw_if_rx_mode mode;
+} af_packet_queue_t;
+
+typedef struct
+{
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ u32 hw_if_index;
+ u32 sw_if_index;
+ u32 per_interface_next_index;
+ af_packet_if_mode_t mode;
+ u8 is_admin_up;
+ u8 is_cksum_gso_enabled;
+ u8 version;
+ af_packet_queue_t *rx_queues;
+ af_packet_queue_t *tx_queues;
+
+ u8 num_rxqs;
+ u8 num_txqs;
+
+ u8 *host_if_name;
+ int host_if_index;
+
+ u32 host_mtu;
+ u32 dev_instance;
+
+ af_packet_ring_t *rings;
+ u8 is_qdisc_bypass_enabled;
+ u8 is_fanout_enabled;
+} af_packet_if_t;
+
+typedef struct
+{
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ af_packet_if_t *interfaces;
+
+ u32 polling_count;
+ /* rx buffer cache */
+ u32 **rx_buffers;
+
+ /* hash of host interface names */
+ mhash_t if_index_by_host_if_name;
+
+ /** log class */
+ vlib_log_class_t log_class;
+} af_packet_main_t;
+
+typedef struct
+{
+ u8 *host_if_name;
+ u8 *hw_addr;
+ u32 rx_frame_size;
+ u32 tx_frame_size;
+ u32 rx_frames_per_block;
+ u32 tx_frames_per_block;
+ u8 num_rxqs;
+ u8 num_txqs;
+ u8 is_v2;
+ af_packet_if_mode_t mode;
+ af_packet_if_flags_t flags;
+
+ /* return */
+ u32 sw_if_index;
+} af_packet_create_if_arg_t;
+
+extern af_packet_main_t af_packet_main;
+extern vnet_device_class_t af_packet_device_class;
+extern vlib_node_registration_t af_packet_input_node;
+
+int af_packet_create_if (af_packet_create_if_arg_t *arg);
+int af_packet_delete_if (u8 *host_if_name);
+int af_packet_set_l4_cksum_offload (u32 sw_if_index, u8 set);
+int af_packet_dump_ifs (af_packet_if_detail_t ** out_af_packet_ifs);
+
+format_function_t format_af_packet_device_name;
+
+#define MIN(x,y) (((x)<(y))?(x):(y))
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */