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bpf: only build sockmap with CONFIG_INET 

The sockmap infrastructure is only aware of TCP sockets at the
moment. In the future we plan to add UDP. In both cases CONFIG_NET
should be built-in.

So lets only build sockmap if CONFIG_INET is enabled.

Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
John Fastabend 2018-01-03 17:57:56 -08:00 committed by Daniel Borkmann
parent c20a71a7a3
commit 5f103c5d4d
3 changed files with 4 additions and 2 deletions
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2
include/linux/bpf.h
View File

@ -554,7 +554,7 @@ static inline bool bpf_prog_is_dev_bound(struct bpf_prog_aux *aux)
}
#endif /* CONFIG_NET && CONFIG_BPF_SYSCALL */
#if defined(CONFIG_STREAM_PARSER) && defined(CONFIG_BPF_SYSCALL)
#if defined(CONFIG_STREAM_PARSER) && defined(CONFIG_BPF_SYSCALL) && defined(CONFIG_INET)
struct sock *__sock_map_lookup_elem(struct bpf_map *map, u32 key);
int sock_map_prog(struct bpf_map *map, struct bpf_prog *prog, u32 type);
#else

2
include/linux/bpf_types.h
View File

@ -42,7 +42,7 @@ BPF_MAP_TYPE(BPF_MAP_TYPE_ARRAY_OF_MAPS, array_of_maps_map_ops)
BPF_MAP_TYPE(BPF_MAP_TYPE_HASH_OF_MAPS, htab_of_maps_map_ops)
#ifdef CONFIG_NET
BPF_MAP_TYPE(BPF_MAP_TYPE_DEVMAP, dev_map_ops)
#ifdef CONFIG_STREAM_PARSER
#if defined(CONFIG_STREAM_PARSER) && defined(CONFIG_INET)
BPF_MAP_TYPE(BPF_MAP_TYPE_SOCKMAP, sock_map_ops)
#endif
BPF_MAP_TYPE(BPF_MAP_TYPE_CPUMAP, cpu_map_ops)

2
kernel/bpf/Makefile
View File

@ -9,9 +9,11 @@ obj-$(CONFIG_BPF_SYSCALL) += devmap.o
obj-$(CONFIG_BPF_SYSCALL) += cpumap.o
obj-$(CONFIG_BPF_SYSCALL) += offload.o
ifeq ($(CONFIG_STREAM_PARSER),y)
ifeq ($(CONFIG_INET),y)
obj-$(CONFIG_BPF_SYSCALL) += sockmap.o
endif
endif
endif
ifeq ($(CONFIG_PERF_EVENTS),y)
obj-$(CONFIG_BPF_SYSCALL) += stackmap.o
endif