diff options
| author | Arjun Roy <arjunroy@google.com> | 2021-02-12 00:21:07 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-02-12 05:25:05 +0300 |
| commit | 3c5a2fd042d0bfac71a2dfb99515723d318df47b (patch) | |
| tree | bc4d1719f93484e52dcd327e014378c00702dfeb /include | |
| parent | 9fbb4a7ac463c9a7240787f6d9481ec6f8048a74 (diff) | |
| download | linux-3c5a2fd042d0bfac71a2dfb99515723d318df47b.tar.xz | |
tcp: Sanitize CMSG flags and reserved args in tcp_zerocopy_receive.
Explicitly define reserved field and require it and any subsequent
fields to be zero-valued for now. Additionally, limit the valid CMSG
flags that tcp_zerocopy_receive accepts.
Fixes: 7eeba1706eba ("tcp: Add receive timestamp support for receive zerocopy.")
Signed-off-by: Arjun Roy <arjunroy@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Suggested-by: David Ahern <dsahern@gmail.com>
Suggested-by: Leon Romanovsky <leon@kernel.org>
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/tcp.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/uapi/linux/tcp.h b/include/uapi/linux/tcp.h index 42fc5a640df4..8fc09e8638b3 100644 --- a/include/uapi/linux/tcp.h +++ b/include/uapi/linux/tcp.h @@ -357,6 +357,6 @@ struct tcp_zerocopy_receive { __u64 msg_control; /* ancillary data */ __u64 msg_controllen; __u32 msg_flags; - /* __u32 hole; Next we must add >1 u32 otherwise length checks fail. */ + __u32 reserved; /* set to 0 for now */ }; #endif /* _UAPI_LINUX_TCP_H */ |