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net/can: Initial host SocketCan support for CAN FD.

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Signed-off-by: Jan Charvat <charvj10@fel.cvut.cz>
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Reviewed-by: Vikram Garhwal <fnu.vikram@xilinx.com>
Message-Id: <41383d4eb3f35586c696a8e29c4dff4031a81338.1600069689.git.pisa@cmp.felk.cvut.cz>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jan Charvat 2020-09-14 10:09:02 +02:00 • committed by Paolo Bonzini
parent c3dfce9afd
commit d44948ccbd
3 changed files with 53 additions and 4 deletions
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8
include/net/can_emu.h
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@ -46,7 +46,8 @@ typedef uint32_t qemu_canid_t;
typedef struct qemu_can_frame {
qemu_canid_t can_id; /* 32 bit CAN_ID + EFF/RTR/ERR flags */
uint8_t can_dlc; /* data length code: 0 .. 8 */
uint8_t data[8] QEMU_ALIGNED(8);
uint8_t flags;
uint8_t data[64] QEMU_ALIGNED(8);
} qemu_can_frame;
/* Keep defines for QEMU separate from Linux ones for now */
@ -58,6 +59,10 @@ typedef struct qemu_can_frame {
#define QEMU_CAN_SFF_MASK 0x000007FFU /* standard frame format (SFF) */
#define QEMU_CAN_EFF_MASK 0x1FFFFFFFU /* extended frame format (EFF) */
#define QEMU_CAN_FRMF_BRS 0x01 /* bit rate switch (2nd bitrate for data) */
#define QEMU_CAN_FRMF_ESI 0x02 /* error state ind. of transmitting node */
#define QEMU_CAN_FRMF_TYPE_FD 0x10 /* internal bit ind. of CAN FD frame */
/**
* struct qemu_can_filter - CAN ID based filter in can_register().
* @can_id: relevant bits of CAN ID which are not masked out.
@ -97,6 +102,7 @@ struct CanBusClientState {
char *model;
char *name;
void (*destructor)(CanBusClientState *);
bool fd_mode;
};
#define TYPE_CAN_BUS "can-bus"