5  * SPDX-License-Identifier: Apache-2.0
11  * Routines setting up the host system. Those are placed in separate file
48 	int fd, opt, ret = -EINVAL;  in linux_socketcan_iface_open()  local
52 		return -errno;  in linux_socketcan_iface_open()
58 	strncpy(ifr.ifr_name, if_name, IFNAMSIZ - 1);  in linux_socketcan_iface_open()
63 		return -errno;  in linux_socketcan_iface_open()
72 		return -errno;  in linux_socketcan_iface_open()
75 	/* this option must always be enabled in order to receive TX confirmations */  in linux_socketcan_iface_open()
76 	opt = 1;  in linux_socketcan_iface_open()
77 	ret = setsockopt(fd, SOL_CAN_RAW, CAN_RAW_RECV_OWN_MSGS, &opt, sizeof(opt));  in linux_socketcan_iface_open()
80 		return -errno;  in linux_socketcan_iface_open()
106 		return -errno;  in linux_socketcan_poll_data()
113 	return -EAGAIN;  in linux_socketcan_poll_data()
137 	 * frames. In Linux the flags field is undefined for legacy frames.  in linux_socketcan_read_data()
140 		frame->flags |= CANFD_FDF;  in linux_socketcan_read_data()
142 		frame->flags = 0;  in linux_socketcan_read_data()
150 	int opt = mode_fd ? 1 : 0;  in linux_socketcan_set_mode_fd()  local
152 	return setsockopt(fd, SOL_CAN_RAW, CAN_RAW_FD_FRAMES, &opt, sizeof(opt));  in linux_socketcan_set_mode_fd()