bpf: allow BPF programs access skb_shared_info->gso_segs field

This adds the ability to read gso_segs from a BPF program. v3: Use BPF_REG_AX instead of BPF_REG_TMP for the temporary register, as suggested by Martin. v2: refined Eddie Hao patch to address Alexei feedback.

Eric Dumazet committed 7 years ago

Commit d9ff2861 parent 866e6ac4 files · +59 −0Browse files

Showing the changes to include/uapi/linux (1 of 4 files). Show all

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include/uapi/linux/bpf.h+1−0

@@ -2540,6 +2540,7 @@ struct __sk_buff { · 2539 unmodified lines
2540	__bpf_md_ptr(struct bpf_flow_keys *, flow_keys);	2540	__bpf_md_ptr(struct bpf_flow_keys *, flow_keys);
2541	__u64 tstamp;	2541	__u64 tstamp;
2542	__u32 wire_len;	2542	__u32 wire_len;
		2543	__u32 gso_segs;
2543	};	2544	};
2544		2545
2545	struct bpf_tunnel_key {	2546	struct bpf_tunnel_key {