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Reallocate packet #3344
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Reallocate packet #3344
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mtfriesen
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// fixed. | ||
if (program_info->program_type_specific_helper_prototype[index].flags.reallocate_packet != 0) { | ||
hash_t::append_byte_range( | ||
byte_range, program_info->program_type_specific_helper_prototype[index].flags); |
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is it possible to round each bit field to 8-bit boundary, and add the corresponding bytes to the hash? So for reallocate_packet
, we can add 1 byte of data to the hash.
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Description
Note this PR must be completed after #3326 is merged.
This fixes #3090. A reallocate_packet flag is added to the helper function prototype metadata, to pass onto the PREVAIL verifier, to validate programs that uses any helper function that may change the packet pointers such as xdp_adjust_head.
Testing
A new netsh tests is added that tries to load an unsafe XDP program and fails.
Documentation
Updated extension documentation.
Installation
No changes to installation.