* Add map-in-map support
Replace UM ebpf_map_update/delete_element with libbpf-compliant
bpf_map_update/delete_elem
This adds the basic functionality needed for #375
Not in this PR, but in a subsequent PR:
* ensure that all inner maps match the one specified by inner_map_idx,
much like prog_types have to match in a prog_array.
* ensure that putting a prog_array in an array of maps adheres to the
prog_array contract that any associated progs have to match the
type of the calling program.
* read a map id not fd when UM reads the value (will be done together
with issue #396 since also affects prog_arrays)
Signed-off-by: Dave Thaler <dthaler@microsoft.com>
* Switch to hash table from AVL.
Lock free in the presence of epoch allocator.
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
Co-authored-by: Dave Thaler <dthaler@microsoft.com>
* Switch from _Pre_maybenull_ to _In_opt_
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* Fix C6011
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* Fix C6011 in PreprocessCommand
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* Make a couple of `_In_` arguments be const
* Add `_opt_` to a number of arguments that can be NULL
* Add SAL annotation to a few more APIs that were missing it
* Remove annotations like
`_Pre_readable_byte_size_(hash_table->key_size)` since they just give
code analysis warnings such as:
```
c:\git\dthaler\ebpf-for-windows\libs\platform\ebpf_platform.h(445):
warning C28230: The type of '_Param_(1)' has no member 'key_size'.
c:\git\dthaler\ebpf-for-windows\libs\platform\ebpf_platform.h(445):
warning C28285: For function 'ebpf_hash_table_delete' '_Param_(2)'
syntax error in
'SAL_readableTo(byteCount(__formal(0,hash_table)->key_size))' near
'key_size))'.
```
Signed-off-by: Dave Thaler <dthaler@ntdev.microsoft.com>
* First pass of adding SAL annotations
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* Finish annotating platform
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* Cleanup annotation to get lock tracking work correctly
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* PR feedback and fix static analysis issues
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* PR feedback
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* PR feedback
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* PR feedback
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* Fix build break from merge
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* Simplify names of some ebpf_result codes
* Remove _ERROR_ for consistency
* Combine EBPF_INVALID_HANDLE and EBPF_INVALID_OBJECT
* Rename EBPF_ERROR_NOT_FOUND to EBPF_KEY_NOT_FOUND for consistency with the associated description.
* Change code that returned EBPF_ERROR_NOT_FOUND for a case other than a
key, to use a different appropriate result, so the description stays correct.
Fixes#212
Signed-off-by: Dave Thaler <dthaler@ntdev.microsoft.com>
* Remove allocations from executable memory pool
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* Add direction to doxygen
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* Clarify use of 4096 as page size
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* PR feedback
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* Create unit test for execution context
* Split out platform unit tests
* Call UT as part of CI/CD pipeline
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
* Add support for notifying on provider change
* Build trampoline functions for relocation of provider helper functions
Resolves: #135Resolves: #133
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
Dave Thaler
Alan Jowett
Shankar Seal