Commit Graph

126 Commits (7549eb979c39555215edfc58fbf94cdf735dc949)

Author SHA1 Message Date
Alessandro Decina 7549eb979c
Merge pull request #315 from dave-tucker/sock
Add support for BPF_PROG_TYPE_CGROUP_SOCK
2 years ago
Dave Tucker 05c1586202 bpf: bpf_probe_read_kernel fields in pt_regs
As it turns out, the verifier gets upset if you try to read the values
directly without using bpf_probe_read.

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
2 years ago
Tatsuyuki Ishi 5e24cf7a29
bpf: Remove unnecessary Sync bound on PerCpuArray<T> 2 years ago
Alessandro Decina 82cd3e695a ebpf: PerCpuArray: remove get_mut() and add get_ptr() and get_ptr_mut()
get_mut() wasn't sound as it allowed creating multiple mutable
references.
2 years ago
Alessandro Decina 1eb9ef5488
Merge pull request #290 from ishitatsuyuki/immut-self
bpf: Replace map types to use &self, remove HashMap::get_mut
2 years ago
Dave Tucker 6f51b616e1 bpf: Implement BPF_PROG_TYPE_CGROUP_SOCK
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
2 years ago
Dave Tucker 9d18a48c3c bpf: Add accessors to SockOpsContext
Allow getting family, remote/local v4/v6 addresses and the remote and
local ports.

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
2 years ago
Dave Tucker c725e72796 bpf: re-reun build.rs if env changed
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
2 years ago
Dave Tucker e3c8c659a1 bpf: arm fix pt_regs handling
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
2 years ago
Tatsuyuki Ishi 41c6b56142 bpf: Replace map types to use &self, remove HashMap::get_mut
The bpf_map_defs are now wrapped with UnsafeCell, which also happens to
provide a cozy way to get a *mut pointer. An UnsafeCell isn't strictly
required as the struct fields are practically opaque to us, but using an
UnsafeCell follows the general best practices against miscompilation and
also prevents some obvious errors.

HashMap::get_mut was removed because the idea is completely unsound.
Previous users should wrap their data with UnsafeCell instead or use
atomics.

Closes: https://github.com/aya-rs/aya/issues/233
2 years ago
Dave Tucker 218d4842d6 bpf: Be consistent with arm target_arch
This is `arm` in bindings but `armv7` in args.
Let's use `arm`

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
2 years ago
Dave Tucker 7f6da53c34 bpf: Fix pt_regs for aarch64 (again)
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
2 years ago
Dave Tucker 1d06b41e57 ci: Test all architectures
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
2 years ago
Dave Tucker 7e828df1c9 bpf: Fix aarch64 access to regs
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
2 years ago
Alessandro Decina 6b1f47323b
Merge pull request #293 from dave-tucker/getters-be-gone
Getters be gone
2 years ago
Alessandro Decina 16337001e4
Merge pull request #286 from nak3/add-BPF_MAP_TYPE_BLOOM_FILTER
Add support for BPF_MAP_TYPE_BLOOM_FILTER
2 years ago
Kenjiro Nakayama c5d5695a71 Add missing BPF_MAP_TYPE_STACK in BPF code
Currently BPF_MAP_TYPE_STACK is supported by user code (`aya/src/maps/stack.rs`),
but it does not support the BPF_MAP_TYPE_STACK BPF code.

This patch fixes it.
2 years ago
Dave Tucker 8672ff6c56 bpf: Remove generated getters
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
2 years ago
Dave Tucker 74704c3b28 bpf: Support BPF_PROG_TYPE_SK_LOOKUP
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
2 years ago
Kenjiro Nakayama c4262f793d Add support for BPF_MAP_TYPE_BLOOM_FILTER
This patch adds support for `BPF_MAP_TYPE_BLOOM_FILTER`.
2 years ago
Dave Tucker 4acd996cb8 bpf: Add PtRegs wrapper
This adds a portable wrapper around pt_regs and user_pt_regs.
It makes writing Raw Tracepoint or KProbe programs easier when the
arguments are one of these types while also ensuring code is portable
across architectures

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
2 years ago
gianluigi a9c0fccb2e Add riscv64 bindings 3 years ago
dave-tucker 4767664d5d [codegen] Update libbpf to 47595c2f08aece55baaf21ed0b72f5c5abf2cb5eUpdate libbpf to 47595c2f08aece55baaf21ed0b72f5c5abf2cb5e
Files changed:\nM	aya/src/generated/linux_bindings_riscv64.rs
M	bpf/aya-bpf-bindings/src/riscv64/bindings.rs
M	bpf/aya-bpf-bindings/src/riscv64/getters.rs
M	bpf/aya-bpf-bindings/src/riscv64/helpers.rs
3 years ago
Dave Tucker edaa70b5ba riscv scaffolding for codegen
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Dave Tucker 4a32e7d985 clippy: fix new lints on nightly
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Michal Rostecki 3262f85925 bpf(doc): Hide docs of bindings
Before this change, documentation of helper functions (defined by us,
not bindings) were not visible, because `use gen::*` was overriding them
with helpers coming from aya-bpf-bindings, which have the same names and
no docs.

Signed-off-by: Michal Rostecki <vadorovsky@gmail.com>
3 years ago
Amos Wenger a1e7b58d7c Don't use #[no_mangle] (clashes with `#[export_name]`)
This closes #270.

With this, the symbol name is correct in the intermediate LLVM bitcode
object file (`.rcgu.o`) and in the final BPF program.
3 years ago
Kenjiro Nakayama e68d734c68
Add support for BPF_PROG_TYPE_CGROUP_SOCKOPT (#268) 3 years ago
alessandrod 7f7c78ad6b [codegen] Update libbpf to 86eb09863c1c0177e99c2c703092042d3cdba910Update libbpf to 86eb09863c1c0177e99c2c703092042d3cdba910
Files changed:\nM	aya/src/generated/linux_bindings_aarch64.rs
M	aya/src/generated/linux_bindings_armv7.rs
M	aya/src/generated/linux_bindings_x86_64.rs
M	bpf/aya-bpf-bindings/src/aarch64/bindings.rs
M	bpf/aya-bpf-bindings/src/aarch64/getters.rs
M	bpf/aya-bpf-bindings/src/aarch64/helpers.rs
M	bpf/aya-bpf-bindings/src/armv7/bindings.rs
M	bpf/aya-bpf-bindings/src/armv7/getters.rs
M	bpf/aya-bpf-bindings/src/armv7/helpers.rs
M	bpf/aya-bpf-bindings/src/x86_64/bindings.rs
M	bpf/aya-bpf-bindings/src/x86_64/getters.rs
M	bpf/aya-bpf-bindings/src/x86_64/helpers.rs
3 years ago
Dave Tucker 2bac924464 bpf: Add support for BPF_PROG_TYPE_CGROUP_SOCK_ADDR
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Kenjiro Nakayama f721021a0a
Add support for BPF_PROG_TYPE_CGROUP_SYSCTL (#256)
* Add support for BPF_PROG_TYPE_CGROUP_SYSCTL

This patch adds support for `BPF_PROG_TYPE_CGROUP_SYSCTL`.

* Parse unnamed macro

* Fix docs
3 years ago
tirex f1f7185dab Set skb_buff visbility to pub 3 years ago
dave-tucker d6ca3e1ae7 [codegen] Update libbpf to 3a4e26307d0f9b227e3ebd28b443a1a715e4e17dUpdate libbpf to 3a4e26307d0f9b227e3ebd28b443a1a715e4e17d
Files changed:\nM	aya/src/generated/linux_bindings_aarch64.rs
M	aya/src/generated/linux_bindings_armv7.rs
M	aya/src/generated/linux_bindings_x86_64.rs
M	bpf/aya-bpf-bindings/src/aarch64/bindings.rs
M	bpf/aya-bpf-bindings/src/aarch64/getters.rs
M	bpf/aya-bpf-bindings/src/aarch64/helpers.rs
M	bpf/aya-bpf-bindings/src/armv7/bindings.rs
M	bpf/aya-bpf-bindings/src/armv7/getters.rs
M	bpf/aya-bpf-bindings/src/armv7/helpers.rs
M	bpf/aya-bpf-bindings/src/x86_64/bindings.rs
M	bpf/aya-bpf-bindings/src/x86_64/getters.rs
M	bpf/aya-bpf-bindings/src/x86_64/helpers.rs
3 years ago
Dave Tucker f12c0269d0 bpf: Maps live in maps section
This forces all maps to the maps section so we remain compatible with
libbpf. This requires #181 to avoid breaking userspace.

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Kenjiro Nakayama 80913c04f3 Fix minor typo 3 years ago
Alessandro Decina 29d539751a ebpf: add fallback memcpy
Add simplest possible memcpy that the verifier should never trip on
3 years ago
Alessandro Decina f75d968657
Merge pull request #239 from nak3/pub-ops
aya-bpf: expose bpf_sock_ops of SockOpsContext
3 years ago
Kenjiro Nakayama 360560ec4e aya-bpf: expose sk_msg_md of SkMsgContext
This patch expose sk_msg_md of SkMsgContext.
3 years ago
Kenjiro Nakayama 6bc5a4d82d aya-bpf: expose bpf_sock_ops of SockOpsContext
This patch expose bpf_sock_ops of `SockOpsContext`.
3 years ago
Alessandro Decina 5390fb1ee1
Merge pull request #187 from vadorovsky/sk-buff-socket-uid
bpf: sk_buff: Add get_socket_uid method to SkBuffContext
3 years ago
Michal Rostecki 34d74fcd3b bpf: sk_buff: Add get_socket_uid method to SkBuffContext
This change exposes the BPF helper bpf_socket_get_uid as a public method
of SkBuffContext, which allows to get the owner UID of the socket
associated to the sk_buff stored in the context.

Signed-off-by: Michal Rostecki <vadorovsky@gmail.com>
3 years ago
Alessandro Decina ecd6a6e96b bpf: hash_map: add get_mut() method 3 years ago
Nimrod Shneor d0b6daa091 Add LPMTrie Map to aya-bpf for BPF programs 3 years ago
Alessandro Decina 923cd9b767
Merge pull request #142 from vadorovsky/args-mut-ptr
aya-bpf: Add bpf_probe_write_user helper
3 years ago
Michal Rostecki 1df3b17d29 aya-bpf: Add bpf_probe_write_user helper
This helper allows to write to mutable pointers in the userspace, which
come from userspace functions that uprobes attach to.

Signed-off-by: Michal Rostecki <mrostecki@opensuse.org>
3 years ago
Alessandro Decina 5836b3f1b8
Merge pull request #149 from willfindlay/program_array
bpf/maps: implement ProgramArray
3 years ago
William Findlay b28ae97053
bpf/macros: fix tests
Doctests were broken due to depencencies on a generated vmlinux, incorrect function
signatures, and a missing unsafe keyword.
3 years ago
William Findlay df26fd94a7
bpf/program_array: use never type, add unsafe flag, and document safety 3 years ago
William Findlay ff14493751
bpf/maps: implement ProgramArray
This PR implements the ProgramArray map type in aya-bpf. Includes a convenient tail_call
method that wraps the bpf_tail_call helper.
3 years ago
Michal Rostecki 54377b6140 aya-bpf: Allow to convert probe arguments to mutable pointers
Before this change, arguments fetched with `arg` from `ProbeContext`
could be only fetched as const pointers. This change allows to get mut
pointers as well.

Signed-off-by: Michal Rostecki <mrostecki@opensuse.org>
3 years ago