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f5836749c9
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Stanislav Fomichev f5836749c9 bpf: Add BPF_CGROUP_INET_SOCK_RELEASE hook 
Sometimes it's handy to know when the socket gets freed. In
particular, we'd like to try to use a smarter allocation of
ports for bpf_bind and explore the possibility of limiting
the number of SOCK_DGRAM sockets the process can have.

Implement BPF_CGROUP_INET_SOCK_RELEASE hook that triggers on
inet socket release. It triggers only for userspace sockets
(not in-kernel ones) and therefore has the same semantics as
the existing BPF_CGROUP_INET_SOCK_CREATE.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200706230128.4073544-2-sdf@google.com
2020-07-08 01:03:31 +02:00
..
arraymap.c bpf: Remove redundant synchronize_rcu. 2020-07-01 08:07:13 -07:00
bpf_iter.c bpf: Enable bpf_iter targets registering ctx argument types 2020-05-13 12:30:50 -07:00
bpf_lru_list.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
bpf_lru_list.h bpf: Fix a typo "inacitve" -> "inactive" 2020-04-06 21:54:10 +02:00
bpf_lsm.c bpf: Use tracing helpers for lsm programs 2020-06-01 15:08:04 -07:00
bpf_struct_ops_types.h bpf: tcp: Support tcp_congestion_ops in bpf 2020-01-09 08:46:18 -08:00
bpf_struct_ops.c bpf: Set map_btf_{name, id} for all map types 2020-06-22 22:22:58 +02:00
btf.c bpf: Add bpf_skc_to_tcp6_sock() helper 2020-06-24 18:37:59 -07:00
cgroup.c bpf: Don't return EINVAL from {get,set}sockopt when optlen > PAGE_SIZE 2020-06-17 10:54:05 -07:00
core.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2020-06-03 16:27:18 -07:00
cpumap.c bpf: Set map_btf_{name, id} for all map types 2020-06-22 22:22:58 +02:00
devmap.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-07-04 17:48:34 -07:00
disasm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295 2019-06-05 17:36:38 +02:00
disasm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295 2019-06-05 17:36:38 +02:00
dispatcher.c bpf: Remove bpf_image tree 2020-03-13 12:49:52 -07:00
hashtab.c bpf: Remove redundant synchronize_rcu. 2020-07-01 08:07:13 -07:00
helpers.c bpf: Implement BPF ring buffer and verifier support for it 2020-06-01 14:38:22 -07:00
inode.c bpf: Create file bpf iterator 2020-05-09 17:05:26 -07:00
local_storage.c bpf: Set map_btf_{name, id} for all map types 2020-06-22 22:22:58 +02:00
lpm_trie.c bpf: Remove redundant synchronize_rcu. 2020-07-01 08:07:13 -07:00
Makefile flow_dissector: Move out netns_bpf prog callbacks 2020-06-01 15:21:02 -07:00
map_in_map.c bpf: Implement CAP_BPF 2020-05-15 17:29:41 +02:00
map_in_map.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
map_iter.c bpf: Enable bpf_iter targets registering ctx argument types 2020-05-13 12:30:50 -07:00
net_namespace.c bpf: Add link-based BPF program attachment to network namespace 2020-06-01 15:21:03 -07:00
offload.c bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill 2020-02-17 16:53:49 +01:00
percpu_freelist.c bpf: Dont iterate over possible CPUs with interrupts disabled 2020-02-24 16:18:20 -08:00
percpu_freelist.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
queue_stack_maps.c bpf: Remove redundant synchronize_rcu. 2020-07-01 08:07:13 -07:00
reuseport_array.c bpf: Remove redundant synchronize_rcu. 2020-07-01 08:07:13 -07:00
ringbuf.c bpf: Remove redundant synchronize_rcu. 2020-07-01 08:07:13 -07:00
stackmap.c bpf: Fix build without CONFIG_STACKTRACE 2020-07-02 20:21:56 -07:00
syscall.c bpf: Add BPF_CGROUP_INET_SOCK_RELEASE hook 2020-07-08 01:03:31 +02:00
sysfs_btf.c bpf: Support llvm-objcopy for vmlinux BTF 2020-03-19 12:32:38 +01:00
task_iter.c bpf: Fix bpf_iter's task iterator logic 2020-05-14 18:37:32 -07:00
tnum.c bpf: Verifier, do explicit ALU32 bounds tracking 2020-03-30 14:59:53 -07:00
trampoline.c bpf: lsm: Implement attach, detach and execution 2020-03-30 01:34:00 +02:00
verifier.c bpf: Introduce helper bpf_get_task_stack() 2020-07-01 08:23:19 -07:00