80 lines
2.0 KiB
C
80 lines
2.0 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BPF_CGROUP_DEFS_H
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#define _BPF_CGROUP_DEFS_H
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#ifdef CONFIG_CGROUP_BPF
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#include <linux/list.h>
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#include <linux/percpu-refcount.h>
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#include <linux/workqueue.h>
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struct bpf_prog_array;
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#ifdef CONFIG_BPF_LSM
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/* Maximum number of concurrently attachable per-cgroup LSM hooks. */
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#define CGROUP_LSM_NUM 10
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#else
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#define CGROUP_LSM_NUM 0
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#endif
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enum cgroup_bpf_attach_type {
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CGROUP_BPF_ATTACH_TYPE_INVALID = -1,
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CGROUP_INET_INGRESS = 0,
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CGROUP_INET_EGRESS,
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CGROUP_INET_SOCK_CREATE,
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CGROUP_SOCK_OPS,
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CGROUP_DEVICE,
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CGROUP_INET4_BIND,
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CGROUP_INET6_BIND,
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CGROUP_INET4_CONNECT,
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CGROUP_INET6_CONNECT,
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CGROUP_INET4_POST_BIND,
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CGROUP_INET6_POST_BIND,
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CGROUP_UDP4_SENDMSG,
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CGROUP_UDP6_SENDMSG,
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CGROUP_SYSCTL,
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CGROUP_UDP4_RECVMSG,
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CGROUP_UDP6_RECVMSG,
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CGROUP_GETSOCKOPT,
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CGROUP_SETSOCKOPT,
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CGROUP_INET4_GETPEERNAME,
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CGROUP_INET6_GETPEERNAME,
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CGROUP_INET4_GETSOCKNAME,
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CGROUP_INET6_GETSOCKNAME,
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CGROUP_INET_SOCK_RELEASE,
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CGROUP_LSM_START,
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CGROUP_LSM_END = CGROUP_LSM_START + CGROUP_LSM_NUM - 1,
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MAX_CGROUP_BPF_ATTACH_TYPE
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};
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struct cgroup_bpf {
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/* array of effective progs in this cgroup */
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struct bpf_prog_array __rcu *effective[MAX_CGROUP_BPF_ATTACH_TYPE];
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/* attached progs to this cgroup and attach flags
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* when flags == 0 or BPF_F_ALLOW_OVERRIDE the progs list will
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* have either zero or one element
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* when BPF_F_ALLOW_MULTI the list can have up to BPF_CGROUP_MAX_PROGS
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*/
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struct hlist_head progs[MAX_CGROUP_BPF_ATTACH_TYPE];
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u8 flags[MAX_CGROUP_BPF_ATTACH_TYPE];
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/* list of cgroup shared storages */
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struct list_head storages;
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/* temp storage for effective prog array used by prog_attach/detach */
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struct bpf_prog_array *inactive;
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/* reference counter used to detach bpf programs after cgroup removal */
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struct percpu_ref refcnt;
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/* cgroup_bpf is released using a work queue */
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struct work_struct release_work;
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};
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#else /* CONFIG_CGROUP_BPF */
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struct cgroup_bpf {};
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#endif /* CONFIG_CGROUP_BPF */
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#endif
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