bpf: add more checks

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Add checks for:
 - all instructions are valid ones
   (known opcodes, correct syntax, valid reg/off/imm values, etc.)
 - no unreachable instructions
 - no loops
 - basic stack boundaries checks
 - division by zero

Still need to add checks for:
 - use/return only initialized registers and stack data.
 - memory boundaries violation

Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>

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Konstantin Ananyev 2018-05-10 11:23:05 +01:00 committed by Thomas Monjalon

parent 5dba93ae5f

commit 6e12ec4c4d

1 changed files with 1155 additions and 26 deletions

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lib/librte_bpf/bpf_validate.c

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