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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/include/uapi/linux/can/gw.h
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@@ -1,4 +1,4 @@
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-/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
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+/* SPDX-License-Identifier: ((GPL-2.0-only WITH Linux-syscall-note) OR BSD-3-Clause) */
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 /*
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  * linux/can/gw.h
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  *
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@@ -80,6 +80,10 @@
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 	CGW_DELETED,	/* number of deleted CAN frames (see max_hops param) */
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 	CGW_LIM_HOPS,	/* limit the number of hops of this specific rule */
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 	CGW_MOD_UID,	/* user defined identifier for modification updates */
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+	CGW_FDMOD_AND,	/* CAN FD frame modification binary AND */
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+	CGW_FDMOD_OR,	/* CAN FD frame modification binary OR */
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+	CGW_FDMOD_XOR,	/* CAN FD frame modification binary XOR */
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+	CGW_FDMOD_SET,	/* CAN FD frame modification set alternate values */
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 	__CGW_MAX
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 };
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@@ -88,15 +92,18 @@
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 #define CGW_FLAGS_CAN_ECHO 0x01
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 #define CGW_FLAGS_CAN_SRC_TSTAMP 0x02
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 #define CGW_FLAGS_CAN_IIF_TX_OK 0x04
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+#define CGW_FLAGS_CAN_FD 0x08
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 #define CGW_MOD_FUNCS 4 /* AND OR XOR SET */
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 /* CAN frame elements that are affected by curr. 3 CAN frame modifications */
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 #define CGW_MOD_ID	0x01
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-#define CGW_MOD_DLC	0x02
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+#define CGW_MOD_DLC	0x02		/* contains the data length in bytes */
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+#define CGW_MOD_LEN	CGW_MOD_DLC	/* CAN FD length representation */
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 #define CGW_MOD_DATA	0x04
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+#define CGW_MOD_FLAGS	0x08		/* CAN FD flags */
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-#define CGW_FRAME_MODS 3 /* ID DLC DATA */
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+#define CGW_FRAME_MODS 4 /* ID DLC/LEN DATA FLAGS */
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 #define MAX_MODFUNCTIONS (CGW_MOD_FUNCS * CGW_FRAME_MODS)
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@@ -105,7 +112,13 @@
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 	__u8 modtype;
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 } __attribute__((packed));
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+struct cgw_fdframe_mod {
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+	struct canfd_frame cf;
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+	__u8 modtype;
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+} __attribute__((packed));
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+
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 #define CGW_MODATTR_LEN sizeof(struct cgw_frame_mod)
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+#define CGW_FDMODATTR_LEN sizeof(struct cgw_fdframe_mod)
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 struct cgw_csum_xor {
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 	__s8 from_idx;