bpf: add msg_pop_data helper to tools

Add the necessary header definitions to tools for new msg_pop_data_helper.

John Fastabend committed 7 years ago

Commit d913a221 parent 7246d8e2 files · +17 −1Browse files

Unified · Split

2 files

@@ -2268,6 +2268,19 @@ union bpf_attr { · 2267 unmodified lines
2268	*	2268	*
2269	* Return	2269	* Return
2270	* 0 on success, or a negative error in case of failure.	2270	* 0 on success, or a negative error in case of failure.
		2271	*
		2272	* int bpf_msg_pop_data(struct sk_msg_buff *msg, u32 start, u32 pop, u64 flags)
		2273	* Description
		2274	* Will remove pop bytes from a msg starting at byte start.
		2275	* This may result in ENOMEM errors under certain situations if
		2276	* an allocation and copy are required due to a full ring buffer.
		2277	* However, the helper will try to avoid doing the allocation
		2278	* if possible. Other errors can occur if input parameters are
		2279	* invalid either due to start byte not being valid part of msg
		2280	* payload and/or pop value being to large.
		2281	*
		2282	* Return
		2283	* 0 on success, or a negative erro in case of failure.
2271	*/	2284	*/
2272	#define __BPF_FUNC_MAPPER(FN) \	2285	#define __BPF_FUNC_MAPPER(FN) \
2273	FN(unspec), \	2286	FN(unspec), \
@@ -2360,7 +2373,8 @@ union bpf_attr { · 86 unmodified lines
2360	FN(map_push_elem), \	2373	FN(map_push_elem), \
2361	FN(map_pop_elem), \	2374	FN(map_pop_elem), \
2362	FN(map_peek_elem), \	2375	FN(map_peek_elem), \
2363	FN(msg_push_data),	2376	FN(msg_push_data), \
		2377	FN(msg_pop_data),
2364		2378
2365	/* integer value in 'imm' field of BPF_CALL instruction selects which helper	2379	/* integer value in 'imm' field of BPF_CALL instruction selects which helper
2366	* function eBPF program intends to call	2380	* function eBPF program intends to call

 	(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) =

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