David Vernet fda01efc61 bpf: Enable cgroups to be used as kptrs ...

Now that tasks can be used as kfuncs, and the PTR_TRUSTED flag is
available for us to easily add basic acquire / get / release kfuncs, we
can do the same for cgroups. This patch set adds the following kfuncs
which enable using cgroups as kptrs:

struct cgroup *bpf_cgroup_acquire(struct cgroup *cgrp);
struct cgroup *bpf_cgroup_kptr_get(struct cgroup **cgrpp);
void bpf_cgroup_release(struct cgroup *cgrp);

A follow-on patch will add a selftest suite which validates these
kfuncs.

Signed-off-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/r/20221122055458.173143-2-void@manifault.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

2022-11-22 14:45:41 -08:00

..

preload

bpf: iterators: Build and use lightweight bootstrap version of bpftool

2022-07-15 12:01:30 -07:00

arraymap.c

bpf: Do btf_record_free outside map_free callback

2022-11-17 19:11:31 -08:00

bloom_filter.c

treewide: use get_random_u32() when possible

2022-10-11 17:42:58 -06:00

bpf_cgrp_storage.c

bpf: Implement cgroup storage available to non-cgroup-attached bpf progs

2022-10-25 23:19:19 -07:00

bpf_inode_storage.c

bpf: Refactor some inode/task/sk storage functions for reuse

2022-10-25 23:19:19 -07:00

bpf_iter.c

bpf: Initialize the bpf_run_ctx in bpf_iter_run_prog()

2022-08-18 17:06:13 -07:00

bpf_local_storage.c

bpf: Consolidate spin_lock, timer management into btf_record

2022-11-03 22:19:40 -07:00

bpf_lru_list.c

…

bpf_lru_list.h

printk: stop including cache.h from printk.h

2022-05-13 07:20:07 -07:00

bpf_lsm.c

Merge tag 'net-next-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

2022-10-04 13:38:03 -07:00

bpf_struct_ops_types.h

…

bpf_struct_ops.c

bpf: Remove is_valid_bpf_tramp_flags()

2022-07-11 21:04:58 +02:00

bpf_task_storage.c

bpf: Refactor some inode/task/sk storage functions for reuse

2022-10-25 23:19:19 -07:00

btf.c

bpf: Add a kfunc to type cast from bpf uapi ctx to kernel ctx

2022-11-20 15:43:37 -08:00

cgroup_iter.c

bpf: Pin the start cgroup in cgroup_iter_seq_init()

2022-11-21 17:40:42 +01:00

cgroup.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2022-10-03 17:44:18 -07:00

core.c

bpf: Introduce bpf_obj_new

2022-11-17 19:22:14 -08:00

cpumap.c

bpf: Expand map key argument of bpf_redirect_map to u64

2022-11-15 09:00:27 -08:00

devmap.c

bpf: Expand map key argument of bpf_redirect_map to u64

2022-11-15 09:00:27 -08:00

disasm.c

…

disasm.h

…

dispatcher.c

bpf: Fix dispatcher patchable function entry to 5 bytes nop

2022-10-20 18:57:51 -07:00

hashtab.c

bpf: Do btf_record_free outside map_free callback

2022-11-17 19:11:31 -08:00

helpers.c

bpf: Enable cgroups to be used as kptrs

2022-11-22 14:45:41 -08:00

inode.c

…

Kconfig

rcu: Make the TASKS_RCU Kconfig option be selected

2022-04-20 16:52:58 -07:00

link_iter.c

bpf: Add bpf_link iterator

2022-05-10 11:20:45 -07:00

local_storage.c

bpf: Consolidate spin_lock, timer management into btf_record

2022-11-03 22:19:40 -07:00

lpm_trie.c

bpf: Use bpf_map_area_alloc consistently on bpf map creation

2022-08-10 11:50:43 -07:00

Makefile

bpf: Implement cgroup storage available to non-cgroup-attached bpf progs

2022-10-25 23:19:19 -07:00

map_in_map.c

bpf: Add comments for map BTF matching requirement for bpf_list_head

2022-11-17 19:22:14 -08:00

map_in_map.h

…

map_iter.c

…

memalloc.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2022-10-24 13:44:11 -07:00

mmap_unlock_work.h

…

net_namespace.c

…

offload.c

bpf: Use bpf_map_area_alloc consistently on bpf map creation

2022-08-10 11:50:43 -07:00

percpu_freelist.c

bpf: Simplify code by using for_each_cpu_wrap()

2022-09-10 16:18:55 -07:00

percpu_freelist.h

…

prog_iter.c

…

queue_stack_maps.c

bpf: Remove unneeded memset in queue_stack_map creation

2022-08-10 11:48:22 -07:00

reuseport_array.c

net: Fix suspicious RCU usage in bpf_sk_reuseport_detach()

2022-08-17 16:42:59 -07:00

ringbuf.c

bpf: Rename MEM_ALLOC to MEM_RINGBUF

2022-11-14 21:52:45 -08:00

stackmap.c

perf/bpf: Always use perf callchains if exist

2022-09-13 15:03:22 +02:00

syscall.c

bpf: Add comments for map BTF matching requirement for bpf_list_head

2022-11-17 19:22:14 -08:00

sysfs_btf.c

…

task_iter.c

Merge tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2022-10-10 17:53:04 -07:00

tnum.c

…

trampoline.c

bpf: Remove prog->active check for bpf_lsm and bpf_iter

2022-10-25 23:11:46 -07:00

verifier.c

bpf/verifier: Use kmalloc_size_roundup() to match ksize() usage

2022-11-21 15:07:04 +01:00