diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/bpf-cgroup.h | 21 | ||||
| -rw-r--r-- | include/linux/bpf_types.h | 1 | ||||
| -rw-r--r-- | include/linux/filter.h | 10 | ||||
| -rw-r--r-- | include/uapi/linux/bpf.h | 23 |
4 files changed, 55 insertions, 0 deletions
diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h index 8a4566691c8f..67dc4a6471ad 100644 --- a/include/linux/bpf-cgroup.h +++ b/include/linux/bpf-cgroup.h @@ -6,6 +6,7 @@ #include <uapi/linux/bpf.h> struct sock; +struct sockaddr; struct cgroup; struct sk_buff; struct bpf_sock_ops_kern; @@ -63,6 +64,10 @@ int __cgroup_bpf_run_filter_skb(struct sock *sk, int __cgroup_bpf_run_filter_sk(struct sock *sk, enum bpf_attach_type type); +int __cgroup_bpf_run_filter_sock_addr(struct sock *sk, + struct sockaddr *uaddr, + enum bpf_attach_type type); + int __cgroup_bpf_run_filter_sock_ops(struct sock *sk, struct bpf_sock_ops_kern *sock_ops, enum bpf_attach_type type); @@ -103,6 +108,20 @@ int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor, __ret; \ }) +#define BPF_CGROUP_RUN_SA_PROG(sk, uaddr, type) \ +({ \ + int __ret = 0; \ + if (cgroup_bpf_enabled) \ + __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, type); \ + __ret; \ +}) + +#define BPF_CGROUP_RUN_PROG_INET4_BIND(sk, uaddr) \ + BPF_CGROUP_RUN_SA_PROG(sk, uaddr, BPF_CGROUP_INET4_BIND) + +#define BPF_CGROUP_RUN_PROG_INET6_BIND(sk, uaddr) \ + BPF_CGROUP_RUN_SA_PROG(sk, uaddr, BPF_CGROUP_INET6_BIND) + #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) \ ({ \ int __ret = 0; \ @@ -135,6 +154,8 @@ static inline int cgroup_bpf_inherit(struct cgroup *cgrp) { return 0; } #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk,skb) ({ 0; }) #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk,skb) ({ 0; }) #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) ({ 0; }) +#define BPF_CGROUP_RUN_PROG_INET4_BIND(sk, uaddr) ({ 0; }) +#define BPF_CGROUP_RUN_PROG_INET6_BIND(sk, uaddr) ({ 0; }) #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) ({ 0; }) #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(type,major,minor,access) ({ 0; }) diff --git a/include/linux/bpf_types.h b/include/linux/bpf_types.h index 6d7243bfb0ff..2b28fcf6f6ae 100644 --- a/include/linux/bpf_types.h +++ b/include/linux/bpf_types.h @@ -8,6 +8,7 @@ BPF_PROG_TYPE(BPF_PROG_TYPE_SCHED_ACT, tc_cls_act) BPF_PROG_TYPE(BPF_PROG_TYPE_XDP, xdp) BPF_PROG_TYPE(BPF_PROG_TYPE_CGROUP_SKB, cg_skb) BPF_PROG_TYPE(BPF_PROG_TYPE_CGROUP_SOCK, cg_sock) +BPF_PROG_TYPE(BPF_PROG_TYPE_CGROUP_SOCK_ADDR, cg_sock_addr) BPF_PROG_TYPE(BPF_PROG_TYPE_LWT_IN, lwt_inout) BPF_PROG_TYPE(BPF_PROG_TYPE_LWT_OUT, lwt_inout) BPF_PROG_TYPE(BPF_PROG_TYPE_LWT_XMIT, lwt_xmit) diff --git a/include/linux/filter.h b/include/linux/filter.h index 13c044e4832d..fc4e8f91b03d 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -1021,6 +1021,16 @@ static inline int bpf_tell_extensions(void) return SKF_AD_MAX; } +struct bpf_sock_addr_kern { + struct sock *sk; + struct sockaddr *uaddr; + /* Temporary "register" to make indirect stores to nested structures + * defined above. We need three registers to make such a store, but + * only two (src and dst) are available at convert_ctx_access time + */ + u64 tmp_reg; +}; + struct bpf_sock_ops_kern { struct sock *sk; u32 op; diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 102718624d1e..ce3e69e3c793 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -136,6 +136,7 @@ enum bpf_prog_type { BPF_PROG_TYPE_CGROUP_DEVICE, BPF_PROG_TYPE_SK_MSG, BPF_PROG_TYPE_RAW_TRACEPOINT, + BPF_PROG_TYPE_CGROUP_SOCK_ADDR, }; enum bpf_attach_type { @@ -147,6 +148,8 @@ enum bpf_attach_type { BPF_SK_SKB_STREAM_VERDICT, BPF_CGROUP_DEVICE, BPF_SK_MSG_VERDICT, + BPF_CGROUP_INET4_BIND, + BPF_CGROUP_INET6_BIND, __MAX_BPF_ATTACH_TYPE }; @@ -1010,6 +1013,26 @@ struct bpf_map_info { __u64 netns_ino; } __attribute__((aligned(8))); +/* User bpf_sock_addr struct to access socket fields and sockaddr struct passed + * by user and intended to be used by socket (e.g. to bind to, depends on + * attach attach type). + */ +struct bpf_sock_addr { + __u32 user_family; /* Allows 4-byte read, but no write. */ + __u32 user_ip4; /* Allows 1,2,4-byte read and 4-byte write. + * Stored in network byte order. + */ + __u32 user_ip6[4]; /* Allows 1,2,4-byte read an 4-byte write. + * Stored in network byte order. + */ + __u32 user_port; /* Allows 4-byte read and write. + * Stored in network byte order + */ + __u32 family; /* Allows 4-byte read, but no write */ + __u32 type; /* Allows 4-byte read, but no write */ + __u32 protocol; /* Allows 4-byte read, but no write */ +}; + /* User bpf_sock_ops struct to access socket values and specify request ops * and their replies. * Some of this fields are in network (bigendian) byte order and may need |