bpf: introduce BPF_F_XDP_HAS_FRAGS flag in prog_flags loading the ebpf program

Introduce BPF_F_XDP_HAS_FRAGS and the related field in bpf_prog_aux in order to notify the driver the loaded program support xdp frags.

Lorenzo Bianconi committed 4 years ago

Commit c2f2cdb1 parent c41ced04 files · +14 −1Browse files

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@@ -933,6 +933,7 @@ struct bpf_prog_aux { · 932 unmodified lines
933	933	bool func_proto_unreliable;
934	934	bool sleepable;
935	935	bool tail_call_reachable;
	936	+ bool xdp_has_frags;
936	937	struct hlist_node tramp_hlist;
937	938	/* BTF_KIND_FUNC_PROTO for valid attach_btf_id */
938	939	const struct btf_type *attach_func_proto;

@@ -1113,6 +1113,11 @@ enum bpf_link_type { · 1112 unmodified lines
1113	1113	*/
1114	1114	#define BPF_F_SLEEPABLE (1U << 4)
1115	1115
	1116	+/* If BPF_F_XDP_HAS_FRAGS is used in BPF_PROG_LOAD command, the loaded program
	1117	+ * fully support xdp frags.
	1118	+ */
	1119	+#define BPF_F_XDP_HAS_FRAGS (1U << 5)
	1120	+
1116	1121	/* When BPF ldimm64's insn[0].src_reg != 0 then this can have
1117	1122	* the following extensions:
1118	1123	*

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