bpf: add selftest for lirc_mode2 type program (6bdd533c) · Commits · 戴 / test

tools/bpf/bpftool/prog.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -71,6 +71,7 @@ static const char * const prog_type_name[] = {
		[BPF_PROG_TYPE_SK_MSG] = "sk_msg",
		[BPF_PROG_TYPE_RAW_TRACEPOINT] = "raw_tracepoint",
		[BPF_PROG_TYPE_CGROUP_SOCK_ADDR] = "cgroup_sock_addr",
		[BPF_PROG_TYPE_LIRC_MODE2] = "lirc_mode2",
		};

		static void print_boot_time(__u64 nsecs, char *buf, unsigned int size)

tools/include/uapi/linux/bpf.h

+65 −14

Original line number	Diff line number	Diff line
		@@ -143,6 +143,7 @@ enum bpf_prog_type {
		BPF_PROG_TYPE_RAW_TRACEPOINT,
		BPF_PROG_TYPE_CGROUP_SOCK_ADDR,
		BPF_PROG_TYPE_LWT_SEG6LOCAL,
		BPF_PROG_TYPE_LIRC_MODE2,
		};

		enum bpf_attach_type {
		@@ -162,6 +163,7 @@ enum bpf_attach_type {
		BPF_CGROUP_INET6_POST_BIND,
		BPF_CGROUP_UDP4_SENDMSG,
		BPF_CGROUP_UDP6_SENDMSG,
		BPF_LIRC_MODE2,
		__MAX_BPF_ATTACH_TYPE
		};

		@@ -1852,10 +1854,10 @@ union bpf_attr {
		* If lookup is successful and result shows packet is to be
		* forwarded, the neighbor tables are searched for the nexthop.
		* If successful (ie., FIB lookup shows forwarding and nexthop
		* is resolved), the nexthop address is returned in ipv4_dst,
		* ipv6_dst or mpls_out based on family, smac is set to mac
		* address of egress device, dmac is set to nexthop mac address,
		* rt_metric is set to metric from route.
		* is resolved), the nexthop address is returned in ipv4_dst
		* or ipv6_dst based on family, smac is set to mac address of
		* egress device, dmac is set to nexthop mac address, rt_metric
		* is set to metric from route (IPv4/IPv6 only).
		*
		* plen argument is the size of the passed in struct.
		* flags argument can be a combination of one or more of the
		@@ -2005,6 +2007,53 @@ union bpf_attr {
		* direct packet access.
		* Return
		* 0 on success, or a negative error in case of failure.
		*
		* int bpf_rc_keydown(void *ctx, u32 protocol, u64 scancode, u32 toggle)
		* Description
		* This helper is used in programs implementing IR decoding, to
		* report a successfully decoded key press with scancode,
		* toggle value in the given protocol. The scancode will be
		* translated to a keycode using the rc keymap, and reported as
		* an input key down event. After a period a key up event is
		* generated. This period can be extended by calling either
		* bpf_rc_keydown () again with the same values, or calling
		* bpf_rc_repeat ().
		*
		* Some protocols include a toggle bit, in case the button was
		* released and pressed again between consecutive scancodes.
		*
		* The ctx should point to the lirc sample as passed into
		* the program.
		*
		* The protocol is the decoded protocol number (see
		* enum rc_proto for some predefined values).
		*
		* This helper is only available is the kernel was compiled with
		* the CONFIG_BPF_LIRC_MODE2 configuration option set to
		* "y".
		*
		* Return
		* 0
		*
		* int bpf_rc_repeat(void *ctx)
		* Description
		* This helper is used in programs implementing IR decoding, to
		* report a successfully decoded repeat key message. This delays
		* the generation of a key up event for previously generated
		* key down event.
		*
		* Some IR protocols like NEC have a special IR message for
		* repeating last button, for when a button is held down.
		*
		* The ctx should point to the lirc sample as passed into
		* the program.
		*
		* This helper is only available is the kernel was compiled with
		* the CONFIG_BPF_LIRC_MODE2 configuration option set to
		* "y".
		*
		* Return
		* 0
		*/
		#define __BPF_FUNC_MAPPER(FN) \
		FN(unspec), \
		@@ -2083,7 +2132,9 @@ union bpf_attr {
		FN(lwt_push_encap), \
		FN(lwt_seg6_store_bytes), \
		FN(lwt_seg6_adjust_srh), \
		FN(lwt_seg6_action),
		FN(lwt_seg6_action), \
		FN(rc_repeat), \
		FN(rc_keydown),

		/* integer value in 'imm' field of BPF_CALL instruction selects which helper
		* function eBPF program intends to call
		@@ -2537,8 +2588,10 @@ struct bpf_raw_tracepoint_args {
		#define BPF_FIB_LOOKUP_OUTPUT BIT(1)

		struct bpf_fib_lookup {
		/* input */
		__u8 family; /* network family, AF_INET, AF_INET6, AF_MPLS */
		/* input: network family for lookup (AF_INET, AF_INET6)
		* output: network family of egress nexthop
		*/
		__u8 family;

		/* set if lookup is to consider L4 data - e.g., FIB rules */
		__u8 l4_protocol;
		@@ -2554,22 +2607,20 @@ struct bpf_fib_lookup {
		__u8 tos; /* AF_INET */
		__be32 flowlabel; /* AF_INET6 */

		/* output: metric of fib result */
		/* output: metric of fib result (IPv4/IPv6 only) */
		__u32 rt_metric;
		};

		union {
		__be32 mpls_in;
		__be32 ipv4_src;
		__u32 ipv6_src[4]; /* in6_addr; network order */
		};

		/* input to bpf_fib_lookup, *dst is destination address.
		* output: bpf_fib_lookup sets to gateway address
		/* input to bpf_fib_lookup, ipv{4,6}_dst is destination address in
		* network header. output: bpf_fib_lookup sets to gateway address
		* if FIB lookup returns gateway route
		*/
		union {
		/* return for MPLS lookups */
		__be32 mpls_out[4]; /* support up to 4 labels */
		__be32 ipv4_dst;
		__u32 ipv6_dst[4]; /* in6_addr; network order */
		};

tools/include/uapi/linux/lirc.h

0 → 100644

+217 −0

Original line number	Diff line number	Diff line
		/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
		/*
		* lirc.h - linux infrared remote control header file
		* last modified 2010/07/13 by Jarod Wilson
		*/

		#ifndef _LINUX_LIRC_H
		#define _LINUX_LIRC_H

		#include <linux/types.h>
		#include <linux/ioctl.h>

		#define PULSE_BIT 0x01000000
		#define PULSE_MASK 0x00FFFFFF

		#define LIRC_MODE2_SPACE 0x00000000
		#define LIRC_MODE2_PULSE 0x01000000
		#define LIRC_MODE2_FREQUENCY 0x02000000
		#define LIRC_MODE2_TIMEOUT 0x03000000

		#define LIRC_VALUE_MASK 0x00FFFFFF
		#define LIRC_MODE2_MASK 0xFF000000

		#define LIRC_SPACE(val) (((val)&LIRC_VALUE_MASK) \| LIRC_MODE2_SPACE)
		#define LIRC_PULSE(val) (((val)&LIRC_VALUE_MASK) \| LIRC_MODE2_PULSE)
		#define LIRC_FREQUENCY(val) (((val)&LIRC_VALUE_MASK) \| LIRC_MODE2_FREQUENCY)
		#define LIRC_TIMEOUT(val) (((val)&LIRC_VALUE_MASK) \| LIRC_MODE2_TIMEOUT)

		#define LIRC_VALUE(val) ((val)&LIRC_VALUE_MASK)
		#define LIRC_MODE2(val) ((val)&LIRC_MODE2_MASK)

		#define LIRC_IS_SPACE(val) (LIRC_MODE2(val) == LIRC_MODE2_SPACE)
		#define LIRC_IS_PULSE(val) (LIRC_MODE2(val) == LIRC_MODE2_PULSE)
		#define LIRC_IS_FREQUENCY(val) (LIRC_MODE2(val) == LIRC_MODE2_FREQUENCY)
		#define LIRC_IS_TIMEOUT(val) (LIRC_MODE2(val) == LIRC_MODE2_TIMEOUT)

		/* used heavily by lirc userspace */
		#define lirc_t int

		/* lirc compatible hardware features */

		#define LIRC_MODE2SEND(x) (x)
		#define LIRC_SEND2MODE(x) (x)
		#define LIRC_MODE2REC(x) ((x) << 16)
		#define LIRC_REC2MODE(x) ((x) >> 16)

		#define LIRC_MODE_RAW 0x00000001
		#define LIRC_MODE_PULSE 0x00000002
		#define LIRC_MODE_MODE2 0x00000004
		#define LIRC_MODE_SCANCODE 0x00000008
		#define LIRC_MODE_LIRCCODE 0x00000010


		#define LIRC_CAN_SEND_RAW LIRC_MODE2SEND(LIRC_MODE_RAW)
		#define LIRC_CAN_SEND_PULSE LIRC_MODE2SEND(LIRC_MODE_PULSE)
		#define LIRC_CAN_SEND_MODE2 LIRC_MODE2SEND(LIRC_MODE_MODE2)
		#define LIRC_CAN_SEND_LIRCCODE LIRC_MODE2SEND(LIRC_MODE_LIRCCODE)

		#define LIRC_CAN_SEND_MASK 0x0000003f

		#define LIRC_CAN_SET_SEND_CARRIER 0x00000100
		#define LIRC_CAN_SET_SEND_DUTY_CYCLE 0x00000200
		#define LIRC_CAN_SET_TRANSMITTER_MASK 0x00000400

		#define LIRC_CAN_REC_RAW LIRC_MODE2REC(LIRC_MODE_RAW)
		#define LIRC_CAN_REC_PULSE LIRC_MODE2REC(LIRC_MODE_PULSE)
		#define LIRC_CAN_REC_MODE2 LIRC_MODE2REC(LIRC_MODE_MODE2)
		#define LIRC_CAN_REC_SCANCODE LIRC_MODE2REC(LIRC_MODE_SCANCODE)
		#define LIRC_CAN_REC_LIRCCODE LIRC_MODE2REC(LIRC_MODE_LIRCCODE)

		#define LIRC_CAN_REC_MASK LIRC_MODE2REC(LIRC_CAN_SEND_MASK)

		#define LIRC_CAN_SET_REC_CARRIER (LIRC_CAN_SET_SEND_CARRIER << 16)
		#define LIRC_CAN_SET_REC_DUTY_CYCLE (LIRC_CAN_SET_SEND_DUTY_CYCLE << 16)

		#define LIRC_CAN_SET_REC_DUTY_CYCLE_RANGE 0x40000000
		#define LIRC_CAN_SET_REC_CARRIER_RANGE 0x80000000
		#define LIRC_CAN_GET_REC_RESOLUTION 0x20000000
		#define LIRC_CAN_SET_REC_TIMEOUT 0x10000000
		#define LIRC_CAN_SET_REC_FILTER 0x08000000

		#define LIRC_CAN_MEASURE_CARRIER 0x02000000
		#define LIRC_CAN_USE_WIDEBAND_RECEIVER 0x04000000

		#define LIRC_CAN_SEND(x) ((x)&LIRC_CAN_SEND_MASK)
		#define LIRC_CAN_REC(x) ((x)&LIRC_CAN_REC_MASK)

		#define LIRC_CAN_NOTIFY_DECODE 0x01000000

		/* IOCTL commands for lirc driver */

		#define LIRC_GET_FEATURES _IOR('i', 0x00000000, __u32)

		#define LIRC_GET_SEND_MODE _IOR('i', 0x00000001, __u32)
		#define LIRC_GET_REC_MODE _IOR('i', 0x00000002, __u32)
		#define LIRC_GET_REC_RESOLUTION _IOR('i', 0x00000007, __u32)

		#define LIRC_GET_MIN_TIMEOUT _IOR('i', 0x00000008, __u32)
		#define LIRC_GET_MAX_TIMEOUT _IOR('i', 0x00000009, __u32)

		/* code length in bits, currently only for LIRC_MODE_LIRCCODE */
		#define LIRC_GET_LENGTH _IOR('i', 0x0000000f, __u32)

		#define LIRC_SET_SEND_MODE _IOW('i', 0x00000011, __u32)
		#define LIRC_SET_REC_MODE _IOW('i', 0x00000012, __u32)
		/* Note: these can reset the according pulse_width */
		#define LIRC_SET_SEND_CARRIER _IOW('i', 0x00000013, __u32)
		#define LIRC_SET_REC_CARRIER _IOW('i', 0x00000014, __u32)
		#define LIRC_SET_SEND_DUTY_CYCLE _IOW('i', 0x00000015, __u32)
		#define LIRC_SET_TRANSMITTER_MASK _IOW('i', 0x00000017, __u32)

		/*
		* when a timeout != 0 is set the driver will send a
		* LIRC_MODE2_TIMEOUT data packet, otherwise LIRC_MODE2_TIMEOUT is
		* never sent, timeout is disabled by default
		*/
		#define LIRC_SET_REC_TIMEOUT _IOW('i', 0x00000018, __u32)

		/* 1 enables, 0 disables timeout reports in MODE2 */
		#define LIRC_SET_REC_TIMEOUT_REPORTS _IOW('i', 0x00000019, __u32)

		/*
		* if enabled from the next key press on the driver will send
		* LIRC_MODE2_FREQUENCY packets
		*/
		#define LIRC_SET_MEASURE_CARRIER_MODE _IOW('i', 0x0000001d, __u32)

		/*
		* to set a range use LIRC_SET_REC_CARRIER_RANGE with the
		* lower bound first and later LIRC_SET_REC_CARRIER with the upper bound
		*/
		#define LIRC_SET_REC_CARRIER_RANGE _IOW('i', 0x0000001f, __u32)

		#define LIRC_SET_WIDEBAND_RECEIVER _IOW('i', 0x00000023, __u32)

		/*
		* struct lirc_scancode - decoded scancode with protocol for use with
		* LIRC_MODE_SCANCODE
		*
		* @timestamp: Timestamp in nanoseconds using CLOCK_MONOTONIC when IR
		* was decoded.
		* @flags: should be 0 for transmit. When receiving scancodes,
		* LIRC_SCANCODE_FLAG_TOGGLE or LIRC_SCANCODE_FLAG_REPEAT can be set
		* depending on the protocol
		* @rc_proto: see enum rc_proto
		* @keycode: the translated keycode. Set to 0 for transmit.
		* @scancode: the scancode received or to be sent
		*/
		struct lirc_scancode {
		__u64 timestamp;
		__u16 flags;
		__u16 rc_proto;
		__u32 keycode;
		__u64 scancode;
		};

		/* Set if the toggle bit of rc-5 or rc-6 is enabled */
		#define LIRC_SCANCODE_FLAG_TOGGLE 1
		/* Set if this is a nec or sanyo repeat */
		#define LIRC_SCANCODE_FLAG_REPEAT 2

		/**
		* enum rc_proto - the Remote Controller protocol
		*
		* @RC_PROTO_UNKNOWN: Protocol not known
		* @RC_PROTO_OTHER: Protocol known but proprietary
		* @RC_PROTO_RC5: Philips RC5 protocol
		* @RC_PROTO_RC5X_20: Philips RC5x 20 bit protocol
		* @RC_PROTO_RC5_SZ: StreamZap variant of RC5
		* @RC_PROTO_JVC: JVC protocol
		* @RC_PROTO_SONY12: Sony 12 bit protocol
		* @RC_PROTO_SONY15: Sony 15 bit protocol
		* @RC_PROTO_SONY20: Sony 20 bit protocol
		* @RC_PROTO_NEC: NEC protocol
		* @RC_PROTO_NECX: Extended NEC protocol
		* @RC_PROTO_NEC32: NEC 32 bit protocol
		* @RC_PROTO_SANYO: Sanyo protocol
		* @RC_PROTO_MCIR2_KBD: RC6-ish MCE keyboard
		* @RC_PROTO_MCIR2_MSE: RC6-ish MCE mouse
		* @RC_PROTO_RC6_0: Philips RC6-0-16 protocol
		* @RC_PROTO_RC6_6A_20: Philips RC6-6A-20 protocol
		* @RC_PROTO_RC6_6A_24: Philips RC6-6A-24 protocol
		* @RC_PROTO_RC6_6A_32: Philips RC6-6A-32 protocol
		* @RC_PROTO_RC6_MCE: MCE (Philips RC6-6A-32 subtype) protocol
		* @RC_PROTO_SHARP: Sharp protocol
		* @RC_PROTO_XMP: XMP protocol
		* @RC_PROTO_CEC: CEC protocol
		* @RC_PROTO_IMON: iMon Pad protocol
		*/
		enum rc_proto {
		RC_PROTO_UNKNOWN = 0,
		RC_PROTO_OTHER = 1,
		RC_PROTO_RC5 = 2,
		RC_PROTO_RC5X_20 = 3,
		RC_PROTO_RC5_SZ = 4,
		RC_PROTO_JVC = 5,
		RC_PROTO_SONY12 = 6,
		RC_PROTO_SONY15 = 7,
		RC_PROTO_SONY20 = 8,
		RC_PROTO_NEC = 9,
		RC_PROTO_NECX = 10,
		RC_PROTO_NEC32 = 11,
		RC_PROTO_SANYO = 12,
		RC_PROTO_MCIR2_KBD = 13,
		RC_PROTO_MCIR2_MSE = 14,
		RC_PROTO_RC6_0 = 15,
		RC_PROTO_RC6_6A_20 = 16,
		RC_PROTO_RC6_6A_24 = 17,
		RC_PROTO_RC6_6A_32 = 18,
		RC_PROTO_RC6_MCE = 19,
		RC_PROTO_SHARP = 20,
		RC_PROTO_XMP = 21,
		RC_PROTO_CEC = 22,
		RC_PROTO_IMON = 23,
		};

		#endif

tools/lib/bpf/libbpf.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1462,6 +1462,7 @@ static bool bpf_prog_type__needs_kver(enum bpf_prog_type type)
		case BPF_PROG_TYPE_CGROUP_DEVICE:
		case BPF_PROG_TYPE_SK_MSG:
		case BPF_PROG_TYPE_CGROUP_SOCK_ADDR:
		case BPF_PROG_TYPE_LIRC_MODE2:
		return false;
		case BPF_PROG_TYPE_UNSPEC:
		case BPF_PROG_TYPE_KPROBE:

tools/testing/selftests/bpf/.gitignore

+1 −0

Original line number	Diff line number	Diff line
		@@ -17,3 +17,4 @@ test_sock_addr
		urandom_read
		test_btf
		test_sockmap
		test_lirc_mode2_user

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