netdev - Re: [net-next PATCH 2/2] bpf: sock_map fixes for !CONFIG_BPF_SYSCALL and !STREAM

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Date:   Wed, 16 Aug 2017 16:06:47 -0600
From:   David Ahern <dsahern@...il.com>
To:     John Fastabend <john.fastabend@...il.com>, daniel@...earbox.net,
        davem@...emloft.net, eric.dumazet@...il.com
Cc:     netdev@...r.kernel.org
Subject: Re: [net-next PATCH 2/2] bpf: sock_map fixes for !CONFIG_BPF_SYSCALL
 and !STREAM_PARSER

On 8/16/17 4:02 PM, John Fastabend wrote:
> diff --git a/kernel/bpf/Makefile b/kernel/bpf/Makefile
> index aa24287..897daa0 100644
> --- a/kernel/bpf/Makefile
> +++ b/kernel/bpf/Makefile
> @@ -3,7 +3,10 @@ obj-y := core.o
>  obj-$(CONFIG_BPF_SYSCALL) += syscall.o verifier.o inode.o helpers.o tnum.o
>  obj-$(CONFIG_BPF_SYSCALL) += hashtab.o arraymap.o percpu_freelist.o bpf_lru_list.o lpm_trie.o map_in_map.o
>  ifeq ($(CONFIG_NET),y)
> -obj-$(CONFIG_BPF_SYSCALL) += devmap.o sockmap.o
> +obj-$(CONFIG_BPF_SYSCALL) += devmap.o
> +ifeq ($(CONFIG_STREAM_PARSER),y)
> +obj-$(CONFIG_BPF_SYSCALL) += sockmap.o
> +endif
>  endif

sockmap requires KCM? I thought it just needed STREAM_PARSER. Can't
STREAM_PARSER be used outside of KCM? If so why not make STREAM_PARSER
enabled if sockmap is wanted vs requiring KCM to be compiled in to get
stream parser to get sockmap?