which maps to BPF_PROG_TYPE_SCHED_CLS
Bug: 65674744
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I7ca5912756c575e2c0667b9dae2d24471845e028
bpfloader now has CAP_SYS_ADMIN, which allows it to load programs like
time_in_state.o that use eBPF's tracepoint support.
Test: make bpfloader
Test: ls /sys/fs/bpf/ shows time_in_state progs and maps are created
Bug: 112334572
Bug: 78498733
Change-Id: Iedff50381c9ee2b3bdfc6c01b2e2ccaeaf0917d5
Signed-off-by: Connor O'Brien <connoro@google.com>
Use two maps to record the details of network stats and swap and clean
up after system server pulls the stats. The kernel program checks the
bpf map currently enabled before updating the stats and updates on the
corresponding map. Remove the TAG_STATS_MAP since we don't need to worry
about uid stats overflow problem. All the stats can be stored in the
same map until system server scrapes the stats and clean it up.
Bug: 79171384
Test: dumpsys netd trafficcontroller
CtsUsageStatsTestCases
Change-Id: Ic79e382f51bf21eee78c4cac5a8a97edaf3654cd
The property bpf.progs_loaded will be used by services expecting BPF
programs to be loaded and wait before they are loaded.
Bug: 112334572
Change-Id: I19daa0caa84e2659e8790f0dd551d95ab824e13b
Signed-off-by: Joel Fernandes <joelaf@google.com>
With this, bpfloader does not need to be started by netd and will load
at boot time.
Bug: 112334572
Change-Id: Iad777ed0a5bb5995dbf2fc176a220292a4c5e41f
Signed-off-by: Joel Fernandes <joelaf@google.com>
Change the netd bpf program to the new format. Adding map definition and
necessary helper functions to the kernel program code. Move the netd bpf
programs out of bpfloader to a new directory.
Test: dumpsys netd trafficcontroller
Bug: 112334572
Change-Id: I9287285d188e966193532b1522b5d3e67e32e930
* Wrote a relocatable ELF loader from scratch. The loader library loads
all objects in /system/etc/bpf/, parses and fixes up eBPF instructions
based on relocation information, creates maps and programs and pins
them. A single API call without arguments is made which results in this
operation. The API has all the information it needs from the filesystem
and the ELF objects, so there is no configuration stored in the code
calling the loader API essentially making it zero conf. Initially this
will be used by time_in_state statistics collection using tracepoints.
In the future, netd's eBPF C code should be rewritten to use this
infrastructure and the old ELF loader can be gotten rid off. This is the
first step.
* Link libbpf with libbpf_android which will come from the external/ bcc
project. This will be used for tracepoint and perf eBPF support. In the
future it can be used for other things as kernel eBPF support advances.
This patch will be merged only after bcc is cloned into external/ to
prevent build breakage.
Bug: 112334572
Change-Id: Ic0fd9504e18031132d40bb627c5e44058d59c9f8
Signed-off-by: Joel Fernandes <joelaf@google.com>
system/bpf/bpfloader/BpfLoader.cpp:79:23: error: comparison of integers of different signs: 'int' and 'std::__1::vector<android::bpf::BpfMapInfo, std::__1::allocator<android::bpf::BpfMapInfo> >::size_type' (aka 'unsigned long') [-Werror,-Wsign-compare]
for (int i = 0; i < mapPatterns.size(); i++) {
~ ^ ~~~~~~~~~~~~~~~~~~`
Test: m checkbuild
Change-Id: If2891bfc7655aea34499975763f72e0a25b32289
This reverts commit ea08523a09.
Reason for revert: This change should not be added in master. We need to keep this project identical between aosp master and internal master
Change-Id: I10ba2e4126a01573b74377c04871aaed39092e6e
Apply the git clang format on the bpf project to make sure the existing
code compliance with the standard.
Test: project compiles and bpfMapTest pass.
Bug: 112334572
Change-Id: I4774aa2a197be2c671f6fb307c1fc9b71edfeeec
