bpf: Sync bpf.h to tools/ (196398d4) · Commits · 戴 / test

tools/include/uapi/linux/bpf.h

+89 −1

Original line number	Diff line number	Diff line
		@@ -167,6 +167,7 @@ enum bpf_prog_type {
		BPF_PROG_TYPE_LIRC_MODE2,
		BPF_PROG_TYPE_SK_REUSEPORT,
		BPF_PROG_TYPE_FLOW_DISSECTOR,
		BPF_PROG_TYPE_CGROUP_SYSCTL,
		};

		enum bpf_attach_type {
		@@ -188,6 +189,7 @@ enum bpf_attach_type {
		BPF_CGROUP_UDP6_SENDMSG,
		BPF_LIRC_MODE2,
		BPF_FLOW_DISSECTOR,
		BPF_CGROUP_SYSCTL,
		__MAX_BPF_ATTACH_TYPE
		};

		@@ -2504,6 +2506,75 @@ union bpf_attr {
		* Return
		* 0 if iph and th are a valid SYN cookie ACK, or a negative error
		* otherwise.
		*
		* int bpf_sysctl_get_name(struct bpf_sysctl ctx, char buf, size_t buf_len, u64 flags)
		* Description
		* Get name of sysctl in /proc/sys/ and copy it into provided by
		* program buffer buf of size buf_len.
		*
		* The buffer is always NUL terminated, unless it's zero-sized.
		*
		* If flags is zero, full name (e.g. "net/ipv4/tcp_mem") is
		* copied. Use BPF_F_SYSCTL_BASE_NAME flag to copy base name
		* only (e.g. "tcp_mem").
		* Return
		* Number of character copied (not including the trailing NUL).
		*
		* -E2BIG if the buffer wasn't big enough (buf will contain
		* truncated name in this case).
		*
		* int bpf_sysctl_get_current_value(struct bpf_sysctl ctx, char buf, size_t buf_len)
		* Description
		* Get current value of sysctl as it is presented in /proc/sys
		* (incl. newline, etc), and copy it as a string into provided
		* by program buffer buf of size buf_len.
		*
		* The whole value is copied, no matter what file position user
		* space issued e.g. sys_read at.
		*
		* The buffer is always NUL terminated, unless it's zero-sized.
		* Return
		* Number of character copied (not including the trailing NUL).
		*
		* -E2BIG if the buffer wasn't big enough (buf will contain
		* truncated name in this case).
		*
		* -EINVAL if current value was unavailable, e.g. because
		* sysctl is uninitialized and read returns -EIO for it.
		*
		* int bpf_sysctl_get_new_value(struct bpf_sysctl ctx, char buf, size_t buf_len)
		* Description
		* Get new value being written by user space to sysctl (before
		* the actual write happens) and copy it as a string into
		* provided by program buffer buf of size buf_len.
		*
		* User space may write new value at file position > 0.
		*
		* The buffer is always NUL terminated, unless it's zero-sized.
		* Return
		* Number of character copied (not including the trailing NUL).
		*
		* -E2BIG if the buffer wasn't big enough (buf will contain
		* truncated name in this case).
		*
		* -EINVAL if sysctl is being read.
		*
		* int bpf_sysctl_set_new_value(struct bpf_sysctl ctx, const char buf, size_t buf_len)
		* Description
		* Override new value being written by user space to sysctl with
		* value provided by program in buffer buf of size buf_len.
		*
		* buf should contain a string in same form as provided by user
		* space on sysctl write.
		*
		* User space may write new value at file position > 0. To override
		* the whole sysctl value file position should be set to zero.
		* Return
		* 0 on success.
		*
		* -E2BIG if the buf_len is too big.
		*
		* -EINVAL if sysctl is being read.
		*/
		#define __BPF_FUNC_MAPPER(FN) \
		FN(unspec), \
		@@ -2606,7 +2677,11 @@ union bpf_attr {
		FN(skb_ecn_set_ce), \
		FN(get_listener_sock), \
		FN(skc_lookup_tcp), \
		FN(tcp_check_syncookie),
		FN(tcp_check_syncookie), \
		FN(sysctl_get_name), \
		FN(sysctl_get_current_value), \
		FN(sysctl_get_new_value), \
		FN(sysctl_set_new_value),

		/* integer value in 'imm' field of BPF_CALL instruction selects which helper
		* function eBPF program intends to call
		@@ -2679,6 +2754,9 @@ enum bpf_func_id {
		BPF_ADJ_ROOM_ENCAP_L2_MASK) \
		<< BPF_ADJ_ROOM_ENCAP_L2_SHIFT)

		/* BPF_FUNC_sysctl_get_name flags. */
		#define BPF_F_SYSCTL_BASE_NAME (1ULL << 0)

		/* Mode for BPF_FUNC_skb_adjust_room helper. */
		enum bpf_adj_room_mode {
		BPF_ADJ_ROOM_NET,
		@@ -3308,4 +3386,14 @@ struct bpf_line_info {
		struct bpf_spin_lock {
		__u32 val;
		};

		struct bpf_sysctl {
		__u32 write; /* Sysctl is being read (= 0) or written (= 1).
		* Allows 1,2,4-byte read, but no write.
		*/
		__u32 file_pos; /* Sysctl file position to read from, write to.
		* Allows 1,2,4-byte read an 4-byte write.
		*/
		};

		#endif /* _UAPI__LINUX_BPF_H__ */

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