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.
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| @@ -357,6 +357,6 @@ struct tcp_zerocopy_receive { · 356 unmodified lines | |||
| 357 | __u64 msg_control; /* ancillary data */ | 357 | __u64 msg_control; /* ancillary data */ |
| 358 | __u64 msg_controllen; | 358 | __u64 msg_controllen; |
| 359 | __u32 msg_flags; | 359 | __u32 msg_flags; |
| 360 | /* __u32 hole; Next we must add >1 u32 otherwise length checks fail. */ | 360 | __u32 reserved; /* set to 0 for now */ |
| 361 | }; | 361 | }; |
| 362 | #endif /* _UAPI_LINUX_TCP_H */ | 362 | #endif /* _UAPI_LINUX_TCP_H */ |