diff options
| author | Eric Biggers <ebiggers@google.com> | 2022-07-09 14:18:49 -0700 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2022-07-15 16:43:59 +0800 |
| commit | ec8f7f4821d5e70d71601519bc2325b311324a96 (patch) | |
| tree | 45c64f86acc7dac2c6a2087c38787f4ac2ce79f9 /net/ipv6 | |
| parent | 463f74089ff9148e3e46af454a6977d40b98cd10 (diff) | |
crypto: lib - make the sha1 library optional
Since the Linux RNG no longer uses sha1_transform(), the SHA-1 library
is no longer needed unconditionally. Make it possible to build the
Linux kernel without the SHA-1 library by putting it behind a kconfig
option, and selecting this new option from the kconfig options that gate
the remaining users: CRYPTO_SHA1 for crypto/sha1_generic.c, BPF for
kernel/bpf/core.c, and IPV6 for net/ipv6/addrconf.c.
Unfortunately, since BPF is selected by NET, for now this can only make
a difference for kernels built without networking support.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv6/Kconfig b/net/ipv6/Kconfig index bf2e5e5fe142..658bfed1df8b 100644 --- a/net/ipv6/Kconfig +++ b/net/ipv6/Kconfig @@ -7,6 +7,7 @@ menuconfig IPV6 tristate "The IPv6 protocol" default y + select CRYPTO_LIB_SHA1 help Support for IP version 6 (IPv6). |