af_packet: move to plugin

Type: improvement

Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Change-Id: I3ec857adb3a9e8a778072a202a4d23f4101e83b2

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
new file mode 100644
index 00000000000..7aa5e6d5b9a
--- /dev/null
+++ b/src/plugins/af_packet/af_packet.h
@@ -0,0 +1,179 @@
+/*
+ *------------------------------------------------------------------
+ * 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:
+ */