bpf: Add ingress_ifindex to bpf_sk_lookup

It may be helpful to have access to the ifindex during bpf socket lookup. An example may be to scope certain socket lookup logic to specific interfaces, i.e. an interface may be made exempt from custom lookup code. Add the ifindex of the arriving connection to the bpf_sk_lookup API.

Mark Pashmfouroush committed 5 years ago

Commit f8931561 parent 1a8b5978 files · +30 −18Browse files

Showing the changes to include/uapi (1 of 8 files). Show all

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include/uapi/linux/bpf.h+1−0

@@ -6316,6 +6316,7 @@ struct bpf_sk_lookup { · 6315 unmodified lines
6316	6316	__u32 local_ip4; /* Network byte order */
6317	6317	__u32 local_ip6[4]; /* Network byte order */
6318	6318	__u32 local_port; /* Host byte order */
	6319	+ __u32 ingress_ifindex; /* The arriving interface. Determined by inet_iif. */
6319	6320	};
6320	6321
6321	6322	/*