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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:
*/
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