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Merge "add mainline module support for targetting only newer bpfloader versions"

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Maciej Żenczykowski 2021-11-18 07:19:28 +00:00 committed by Gerrit Code Review
commit 210d6be5ac
2 changed files with 19 additions and 4 deletions
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4
libbpf_android/Loader.cpp
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@ -28,9 +28,9 @@
#include <sys/utsname.h>
#include <unistd.h>
// This is BpfLoader v0.5
// This is BpfLoader v0.6
#define BPFLOADER_VERSION_MAJOR 0u
#define BPFLOADER_VERSION_MINOR 5u
#define BPFLOADER_VERSION_MINOR 6u
#define BPFLOADER_VERSION ((BPFLOADER_VERSION_MAJOR << 16) | BPFLOADER_VERSION_MINOR)
#include "../progs/include/bpf_map_def.h"

19
progs/include/bpf_helpers.h
View file

@ -19,6 +19,21 @@
* *
******************************************************************************/
/* For mainline module use, you can #define BPFLOADER_{MIN/MAX}_VER
* before #include "bpf_helpers.h" to change which bpfloaders will
* process the resulting .o file.
*
* While this will work outside of mainline too, there just is no point to
* using it when the .o and the bpfloader ship in sync with each other.
*/
#ifndef BPFLOADER_MIN_VER
#define BPFLOADER_MIN_VER DEFAULT_BPFLOADER_MIN_VER
#endif
#ifndef BPFLOADER_MAX_VER
#define BPFLOADER_MAX_VER DEFAULT_BPFLOADER_MAX_VER
#endif
/* place things in different elf sections */
#define SECTION(NAME) __attribute__((section(NAME), used))
@ -42,8 +57,8 @@
* while size_of_bpf_{map/prog}_def default to 32/20 which are the v0.0 sizes.
*/
#define LICENSE(NAME) \
unsigned int _bpfloader_min_ver SECTION("bpfloader_min_ver") = DEFAULT_BPFLOADER_MIN_VER; \
unsigned int _bpfloader_max_ver SECTION("bpfloader_max_ver") = DEFAULT_BPFLOADER_MAX_VER; \
unsigned int _bpfloader_min_ver SECTION("bpfloader_min_ver") = BPFLOADER_MIN_VER; \
unsigned int _bpfloader_max_ver SECTION("bpfloader_max_ver") = BPFLOADER_MAX_VER; \
size_t _size_of_bpf_map_def SECTION("size_of_bpf_map_def") = sizeof(struct bpf_map_def); \
size_t _size_of_bpf_prog_def SECTION("size_of_bpf_prog_def") = sizeof(struct bpf_prog_def); \
char _license[] SECTION("license") = (NAME)