Non platform ones (ie. shipped via mainline) already have
the value manually specified.
The goal here is to be able to do some bpf.o validity checking
in the bpfloader based on the bpfloader_min_ver.
Such validity checking really only makes sense for mainline
shipped bpf.o's which might need to load on older bpfloaders.
Hence we no longer want platform bpf.o's to have minver == 0.
Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I9e2f670c48e30818689a42bc515eb49e86f3cbea
Sometimes you just want to change the setting for all maps and/or
programs in a specific .c file...
Bug: 190523685
Bug: 236925089
Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I3ba6b3a8dadf18c1436b21feb1ee03db446e6aba
BpfLoader v0.25+ support loading obj@ver.o files
as if they were obj.o. This allows different
versions of the .o per bpfloader version.
This is useful because BTF enabled bpf.o files
are incompatible with BpfLoader < 0.10.
Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I2067b1c54c36842c0baa779f37a904b75b9dfb6d
Per request on:
https://googleplex-android-review.googlesource.com/c/platform/frameworks/libs/net/+/18992756
While we're at it let's temporarily remove the check in .reset(fd)
if (bpfGetFdMapFlags(mMapFd) != 0) abort(); // TODO: fix for BpfMapRO
We'll add it back when the code is in better shape,
and read-only vs read-write state of the map is something
we actually *know*.
Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Id8d65bdc529872685b42656e638f22048fafb7f6
(split in two to facilitate manual testing)
Bug: 218408035
Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Ifc00ed168231615819b88b232155e1fe6f9a8c71
Tested by making the map struct conditional on #define V18,
and only #defining that in the top line of netd.c,
this results in:
$ objdump -s -j size_of_bpf_map_def out/target/product/vsoc_x86_64/apex/com.android.tethering/etc/bpf/net_shared/clatd.o
out/target/product/vsoc_x86_64/apex/com.android.tethering/etc/bpf/net_shared/clatd.o: file format elf64-little
Contents of section size_of_bpf_map_def:
0000 30000000 00000000 0.......
$ objdump -s -j size_of_bpf_prog_def out/target/product/vsoc_x86_64/apex/com.android.tethering/etc/bpf/net_shared/clatd.o
out/target/product/vsoc_x86_64/apex/com.android.tethering/etc/bpf/net_shared/clatd.o: file format elf64-little
Contents of section size_of_bpf_prog_def:
0000 1c000000 00000000 ........
$ objdump -s -j size_of_bpf_map_def out/target/product/vsoc_x86_64/apex/com.android.tethering/etc/bpf/netd_shared/netd.o
out/target/product/vsoc_x86_64/apex/com.android.tethering/etc/bpf/netd_shared/netd.o: file format elf64-little
Contents of section size_of_bpf_map_def:
0000 74000000 00000000 t.......
$ objdump -s -j size_of_bpf_prog_def out/target/product/vsoc_x86_64/apex/com.android.tethering/etc/bpf/netd_shared/netd.o
out/target/product/vsoc_x86_64/apex/com.android.tethering/etc/bpf/netd_shared/netd.o: file format elf64-little
Contents of section size_of_bpf_prog_def:
0000 5c000000 00000000 \.......
$ echo $[0x00000030] $[0x00000074]
48 116
$ echo $[0x0000001c] $[0x0000005c]
28 92
and it still successfully boots.
So the struct extension infrastructure works as desired.
Bug: 218408035
Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I8b55769e69dbf9580e844f2a50d48651fd9a0cff
while we're at it:
- replace 'unique_fd != -1' with unique_fd.ok() which is
a test for fd.get() >= 0 and is thus effectively equivalent
- make use of the fact that unique_fd.reset()
takes care to save errno.
(see impl. in //system/libbase/include/android-base/unique_fd.h )
Bug: 236285127
Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I6fb7bf28a2265ad84baa3c552b39c620cb3875fe
Really we need to fix the inheritance to make
BpfMapRO the parent class of BpfMap:
but that's a far more difficult thing to do,
so in the short term we punt like this.
This makes BpfMapRO a little bit more usable,
and allows a slow transition across the codebase...
Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I1c5112db70e9e523c113cba536fbe19422b4d3f3
this way is more obviously not calling dup_with_cloexec
Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I4e1ce3b0a42ccea638332ae451e291e025d57895
to replace less safe uses of BpfMap.reset(create(type, keysize, valuesize, entries, flags))
Meant to be used in tests only.
Bug:
Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I869f1f935bcf5d00702c42bc46d6094ea552addc
not perfect due to this being in a header file, so multiple copies
potentially exist, but it's really simple, and works nearly as well.
Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Id90c6933d57bc12f4dd640c8918fd0885c7474cf
This will allow healthd to filter uevent packets, if needed
Bug: 203462310
Test: Ensure that healthd can build if it uses bpf filters
Change-Id: I97bfe9509a6934444f656508176495bba38381be
this doesn't appear to make sense now that it's available to vendors
Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: If2d24fa8eccfb5c12832fb191a8560b024751db7
Correct the indentation style of libclat in the follows
bpf_headers/Android.bp
bpf_syscall_wrappers/Android.bp
Test: build
Change-Id: I7cdd354141124fa8f7b4a864ddd937bef4676302
The bpf_headers no need to explicitly specify visibility for
system/netd/libnetdbpf. The libnetdbpf depends on
bpf_connectivity_headers, which exports bpf_headers already.
Bug: 202086915
Test: m
Change-Id: I09a073b14dc74511ba9dc09a89ae6e89dff51f4d
BPF_ANNOTATE_KV_PAIR is used by libbpf to associate each map with its
BTF information. This is ignored for programs compiled without BTF
information.
Bug: 203823368
Test: build & boot; confirm all bpf progs load successfully
Test: compile time_in_state.o with -g; confirm BTF is loaded
Signed-off-by: Connor O'Brien <connoro@google.com>
Change-Id: I45f294945d48106d39d1d105ac4f49311459a19d
Needed because ClatdController and clatd binary are moved
into apex. libclat is used for accessing BPF map.
Bug: 212345928
Test: manual test
1. Connect to ipv6-only wifi.
2. Try IPv4 traffic.
$ ping 8.8.8.8
Change-Id: If3fb00e12ef365ccf3ac782c4e6ecbfd01d2dd4c
The CtsNativeNetPlatformTestCases uses BpfUtils.h in bpf_headers.
Bug: 29761778
Bug: 202086915
Test: atest CtsNativeNetPlatformTestCases on signed user build
Change-Id: Ibbb10392a283b88328ae17d9aa54322f50878e76
BPF headers used by both platform and mainline modules should be in
frameworks/libs/net.
Bug: 202086915
Test: build and boot
Test: cd packages/modules/Connectivity/netd; atest
Change-Id: Ie6f257b022cdea6bab3389a9fa41791f893e54c3
