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	bool func_proto_unreliable;	933	bool func_proto_unreliable;
934	bool sleepable;	934	bool sleepable;
935	bool tail_call_reachable;	935	bool tail_call_reachable;
		936	bool xdp_has_frags;
936	struct hlist_node tramp_hlist;	937	struct hlist_node tramp_hlist;
937	/* BTF_KIND_FUNC_PROTO for valid attach_btf_id */	938	/* BTF_KIND_FUNC_PROTO for valid attach_btf_id */
938	const struct btf_type *attach_func_proto;	939	const struct btf_type *attach_func_proto;

  */
 #define BPF_F_SLEEPABLE		(1U << 4)
+/* If BPF_F_XDP_HAS_FRAGS is used in BPF_PROG_LOAD command, the loaded program
+ * fully support xdp frags.
+ */
+#define BPF_F_XDP_HAS_FRAGS	(1U << 5)
 /* When BPF ldimm64's insn[0].src_reg != 0 then this can have
  * the following extensions:
  *

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