This is an automated email from the ASF dual-hosted git repository.
gnutt pushed a commit to branch SocketCAN
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git
commit 9721db25451e5693143ff2e47958b7ceafcc3666
Author: Gregory Nutt <gn...@nuttx.org>
AuthorDate: Thu Feb 13 09:58:12 2020 -0600
include/netpacket/can.h: Add CAN socket family definitions
---
include/netpacket/can.h | 120 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 120 insertions(+)
diff --git a/include/netpacket/can.h b/include/netpacket/can.h
new file mode 100644
index 0000000..b93bb21
--- /dev/null
+++ b/include/netpacket/can.h
@@ -0,0 +1,120 @@
+/****************************************************************************
+ * include/netpacket/can.h
+ * Definitions for use with AF_PACKET sockets
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+#ifndef __INCLUDE_NETPACKET_CAN_H
+#define __INCLUDE_NETPACKET_CAN_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdint.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Special address description flags for the CAN_ID */
+
+#define CAN_EFF_FLAG 0x80000000 /* EFF/SFF is set in the MSB */
+#define CAN_RTR_FLAG 0x40000000 /* Remote transmission request */
+#define CAN_ERR_FLAG 0x20000000 /* Error message frame */
+
+/* Valid bits in CAN ID for frame formats */
+
+#define CAN_SFF_MASK 0x000007ff /* Standard frame format (SFF) */
+#define CAN_EFF_MASK 0x1fffffff /* Extended frame format (EFF) */
+#define CAN_ERR_MASK 0x1fffffff /* Omit EFF, RTR, ERR flags */
+
+/* PF_CAN protocols */
+
+#define CAN_RAW 1 /* RAW sockets */
+#define CAN_BCM 2 /* Broadcast Manager */
+#define CAN_TP16 3 /* VAG Transport Protocol v1.6 */
+#define CAN_TP20 4 /* VAG Transport Protocol v2.0 */
+#define CAN_MCNET 5 /* Bosch MCNet */
+#define CAN_ISOTP 6 /* ISO 15765-2 Transport Protocol */
+#define CAN_J1939 7 /* SAE J1939 */
+#define CAN_NPROTO 8
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/* Controller Area Network Identifier structure
+ *
+ * Bit 0-28: CAN identifier (11/29 bit)
+ * Bit 29: Error message frame flag (0 = data frame, 1 = error message)
+ * Bit 30: Remote transmission request flag (1 = rtr frame)
+ * Bit 31: Frame format flag (0 = standard 11 bit, 1 = extended 29 bit)
+ */
+
+typedef uint32_t canid_t;
+
+/* The sockaddr structure for CAN sockets
+ *
+ * can_family: Address family number AF_CAN.
+ * can_ifindex: CAN network interface index.
+ * can_addr: Protocol specific address information
+ */
+
+struct sockaddr_can
+{
+ sa_family_t can_family;
+ int16_t can_ifindex;
+ union
+ {
+ /* Transport protocol class address information */
+
+ struct
+ {
+ canid_t rx_id;
+ canid_t tx_id;
+ } tp;
+
+ /* J1939 address information */
+
+ struct
+ {
+ /* 8 byte name when using dynamic addressing */
+
+ uint64_t name;
+
+ /* pgn:
+ * 8 bit: PS in PDU2 case, else 0
+ * 8 bit: PF
+ * 1 bit: DP
+ * 1 bit: reserved
+ */
+
+ uint32_t pgn;
+
+ /* 1 byte address */
+
+ uint8_t addr;
+ } j1939;
+ } can_addr;
+};
+
+#endif /* __INCLUDE_NETPACKET_CAN_H */
