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Kernel: Plumb packet receive timestamp from NetworkAdapter to Socket::recvfrom

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Since the receiving socket isn't yet known at packet receive time,
keep timestamps for all packets.

This is useful for keeping statistics about in-kernel queue latencies
in the future, and it can be used to implement SO_TIMESTAMP.
This commit is contained in:
Nico Weber 2020-09-16 12:25:06 -04:00 • committed by Andreas Kling
commit 416d470d07
Notes: sideshowbarker 2024-07-19 02:21:53 +09:00
10 changed files with 52 additions and 37 deletions
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2
Kernel/Net/LocalSocket.h
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@ -61,7 +61,7 @@ public:
virtual bool can_read(const FileDescription&, size_t) const override;
virtual bool can_write(const FileDescription&, size_t) const override;
virtual KResultOr<size_t> sendto(FileDescription&, const UserOrKernelBuffer&, size_t, int, Userspace<const sockaddr*>, socklen_t) override;
virtual KResultOr<size_t> recvfrom(FileDescription&, UserOrKernelBuffer&, size_t, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>) override;
virtual KResultOr<size_t> recvfrom(FileDescription&, UserOrKernelBuffer&, size_t, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>, timeval&) override;
virtual KResult getsockopt(FileDescription&, int level, int option, Userspace<void*>, Userspace<socklen_t*>) override;
virtual KResult chown(FileDescription&, uid_t, gid_t) override;
virtual KResult chmod(FileDescription&, mode_t) override;