bpf: add msg_pop_data helper to tools (d913a227) · Commits · 戴 / test

tools/include/uapi/linux/bpf.h

+15 −1

Original line number	Diff line number	Diff line
		@@ -2268,6 +2268,19 @@ union bpf_attr {
		*
		* Return
		* 0 on success, or a negative error in case of failure.
		*
		* int bpf_msg_pop_data(struct sk_msg_buff *msg, u32 start, u32 pop, u64 flags)
		* Description
		* Will remove pop bytes from a msg starting at byte start.
		* This may result in ENOMEM errors under certain situations if
		* an allocation and copy are required due to a full ring buffer.
		* However, the helper will try to avoid doing the allocation
		* if possible. Other errors can occur if input parameters are
		* invalid either due to start byte not being valid part of msg
		* payload and/or pop value being to large.
		*
		* Return
		* 0 on success, or a negative erro in case of failure.
		*/
		#define __BPF_FUNC_MAPPER(FN) \
		FN(unspec), \
		@@ -2360,7 +2373,8 @@ union bpf_attr {
		FN(map_push_elem), \
		FN(map_pop_elem), \
		FN(map_peek_elem), \
		FN(msg_push_data),
		FN(msg_push_data), \
		FN(msg_pop_data),

		/* integer value in 'imm' field of BPF_CALL instruction selects which helper
		* function eBPF program intends to call

+2 −0

Original line number	Diff line number	Diff line
		@@ -113,6 +113,8 @@ static int (bpf_msg_pull_data)(void ctx, int start, int end, int flags) =
		(void *) BPF_FUNC_msg_pull_data;
		static int (bpf_msg_push_data)(void ctx, int start, int end, int flags) =
		(void *) BPF_FUNC_msg_push_data;
		static int (bpf_msg_pop_data)(void ctx, int start, int cut, int flags) =
		(void *) BPF_FUNC_msg_pop_data;
		static int (bpf_bind)(void ctx, void *addr, int addr_len) =
		(void *) BPF_FUNC_bind;
		static int (bpf_xdp_adjust_tail)(void ctx, int offset) =