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It's good to have SPDX identifiers in all files as the Linux kernel
developers are working to add these identifiers to all files.
Update all files with the correct SPDX license identifier based on the license
text of the project or based on the license in the file itself. The SPDX
identifier is a legally binding shorthand, which can be used instead of the
full boiler plate text.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Modified-by: Jason A. Donenfeld <Jason@zx2c4.com>
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The __clang__-guarded #defines cause gas to complain if clang is passed
-fno-integrated-as. Emitting .syntax unified when those are used fixes
this.
Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Kurt Roeckx <kurt@roeckx.be>
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Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
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According to the Google Ngram viewer, jury is significantly more common
than jerry.
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At somepoint we may need to wg_ namespace these.
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Otherwise new handshakes might not occur immediately when the interface
goes up and down.
Also initialize peers to having a proper zeroed handshake jiffies.
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For archs that do not provide the magic csum function, we need to
provide the generic function. Also, some obscure 3.10s have backported
the int size macros, so we ifndef around that to avoid potentially fatal
warnings.
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This makes sense for the security model of laptops, but not for clicking
phones on and off, where we actually want to be able to handle incoming
packets.
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This is not as ideal as using zmm, but zmm downclocks. And it's not as
fast single-threaded as using the gathers. But it is faster when
multithreaded, which is what WireGuard is doing.
Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
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Also clean up related logic quite a bit and add unit tests.
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Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
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Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
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Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
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OpenSSL's Poly1305 kernels use %rbp as a scratch register. However, the kernel
expects rbp to be a valid frame pointer at any given time in order to do
proper unwinding. Thus we need to alter the code in order to preserve it.
The most straightforward manner in which this was accomplished was by replacing
$d3 in poly1305-x86_64.pl -- formerly %r10 -- by %rdi, and replace %rbp by %r10.
Because %rdi, a pointer to the context structure, does not change and is not used
by poly1305_iteration, it is safe to use it here, and the overhead of saving and
restoring it should be minimal.
Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
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This gets us nanoseconds instead of microseconds, which is better, and
we can do this pretty much without freaking out existing userspace,
which doesn't actually make use of the nano/micro seconds field:
zx2c4@thinkpad ~ $ cat a.c
void main()
{
puts(sizeof(struct timeval) == sizeof(struct timespec) ? "success" : "failure");
}
zx2c4@thinkpad ~ $ gcc a.c -m64 && ./a.out
success
zx2c4@thinkpad ~ $ gcc a.c -m32 && ./a.out
success
This doesn't solve y2038 problem, but timespec64 isn't yet a thing in
userspace.
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ARMv4-ARMv8, with NEON for ARMv7 and ARMv8.
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x86_64 only at the moment. SSSE3, AVX, AVX2, AVX512.
Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
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Fedora/Redhat doesn't ship with a prefixed strip, and we don't need to
use it anyway when we're not cross compiling, so don't.
Reported-by: Samuel Neves <sneves@dei.uc.pt>
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Reported-by: Cedric Buxin <cedric.buxin@izri.org>
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When an interface is down, the socket port can change freely. A socket
will be allocated when the interface comes up, and if a socket can't be
allocated, the interface doesn't come up.
However, a socket port can change while the interface is up. In this
case, if a new socket with a new port cannot be allocated, it's
important to keep the interface in a consistent state. The choices are
either to bring down the interface or to preserve the old socket. This
patch implements the latter.
Reported-by: Marc-Antoine Perennou <keruspe@exherbo.org>
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Despite not having access to the latest grsecurity source, I still do
very much want to keep supporting it, so this patch is my best guess at
what will work.
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In thumb mode, it's not possible to use sp as an operand of and, so we
have to muck around with r3 as a scratch register.
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Reported-by: Hermann Lienstromberg <nurtic-vibe@grmml.net>
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Greg Kroah-Hartman
David Benjamin
Samuel Neves
Jason A. Donenfeld