diff options
Diffstat (limited to 'include/uapi/linux/bpf.h')
| -rw-r--r-- | include/uapi/linux/bpf.h | 136 |
1 files changed, 109 insertions, 27 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 671486133988..59b19b6a40d7 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -143,6 +143,7 @@ enum bpf_prog_type { BPF_PROG_TYPE_RAW_TRACEPOINT, BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_PROG_TYPE_LWT_SEG6LOCAL, + BPF_PROG_TYPE_LIRC_MODE2, }; enum bpf_attach_type { @@ -160,6 +161,9 @@ enum bpf_attach_type { BPF_CGROUP_INET6_CONNECT, BPF_CGROUP_INET4_POST_BIND, BPF_CGROUP_INET6_POST_BIND, + BPF_CGROUP_UDP4_SENDMSG, + BPF_CGROUP_UDP6_SENDMSG, + BPF_LIRC_MODE2, __MAX_BPF_ATTACH_TYPE }; @@ -1008,7 +1012,6 @@ union bpf_attr { * :: * * # sysctl kernel.perf_event_max_stack=<new value> - * * Return * The positive or null stack id on success, or a negative error * in case of failure. @@ -1819,10 +1822,9 @@ union bpf_attr { * :: * * # sysctl kernel.perf_event_max_stack=<new value> - * * Return - * a non-negative value equal to or less than size on success, or - * a negative error in case of failure. + * A non-negative value equal to or less than *size* on success, + * or a negative error in case of failure. * * int skb_load_bytes_relative(const struct sk_buff *skb, u32 offset, void *to, u32 len, u32 start_header) * Description @@ -1843,7 +1845,6 @@ union bpf_attr { * in socket filters where *skb*\ **->data** does not always point * to the start of the mac header and where "direct packet access" * is not available. - * * Return * 0 on success, or a negative error in case of failure. * @@ -1853,22 +1854,24 @@ union bpf_attr { * If lookup is successful and result shows packet is to be * forwarded, the neighbor tables are searched for the nexthop. * If successful (ie., FIB lookup shows forwarding and nexthop - * is resolved), the nexthop address is returned in ipv4_dst, - * ipv6_dst or mpls_out based on family, smac is set to mac - * address of egress device, dmac is set to nexthop mac address, - * rt_metric is set to metric from route. + * is resolved), the nexthop address is returned in ipv4_dst + * or ipv6_dst based on family, smac is set to mac address of + * egress device, dmac is set to nexthop mac address, rt_metric + * is set to metric from route (IPv4/IPv6 only). * * *plen* argument is the size of the passed in struct. - * *flags* argument can be one or more BPF_FIB_LOOKUP_ flags: + * *flags* argument can be a combination of one or more of the + * following values: * - * **BPF_FIB_LOOKUP_DIRECT** means do a direct table lookup vs - * full lookup using FIB rules - * **BPF_FIB_LOOKUP_OUTPUT** means do lookup from an egress - * perspective (default is ingress) + * **BPF_FIB_LOOKUP_DIRECT** + * Do a direct table lookup vs full lookup using FIB + * rules. + * **BPF_FIB_LOOKUP_OUTPUT** + * Perform lookup from an egress perspective (default is + * ingress). * * *ctx* is either **struct xdp_md** for XDP programs or * **struct sk_buff** tc cls_act programs. - * * Return * Egress device index on success, 0 if packet needs to continue * up the stack for further processing or a negative error in case @@ -2004,6 +2007,74 @@ union bpf_attr { * direct packet access. * Return * 0 on success, or a negative error in case of failure. + * + * int bpf_rc_keydown(void *ctx, u32 protocol, u64 scancode, u32 toggle) + * Description + * This helper is used in programs implementing IR decoding, to + * report a successfully decoded key press with *scancode*, + * *toggle* value in the given *protocol*. The scancode will be + * translated to a keycode using the rc keymap, and reported as + * an input key down event. After a period a key up event is + * generated. This period can be extended by calling either + * **bpf_rc_keydown** () again with the same values, or calling + * **bpf_rc_repeat** (). + * + * Some protocols include a toggle bit, in case the button was + * released and pressed again between consecutive scancodes. + * + * The *ctx* should point to the lirc sample as passed into + * the program. + * + * The *protocol* is the decoded protocol number (see + * **enum rc_proto** for some predefined values). + * + * This helper is only available is the kernel was compiled with + * the **CONFIG_BPF_LIRC_MODE2** configuration option set to + * "**y**". + * + * Return + * 0 + * + * int bpf_rc_repeat(void *ctx) + * Description + * This helper is used in programs implementing IR decoding, to + * report a successfully decoded repeat key message. This delays + * the generation of a key up event for previously generated + * key down event. + * + * Some IR protocols like NEC have a special IR message for + * repeating last button, for when a button is held down. + * + * The *ctx* should point to the lirc sample as passed into + * the program. + * + * This helper is only available is the kernel was compiled with + * the **CONFIG_BPF_LIRC_MODE2** configuration option set to + * "**y**". + * + * Return + * 0 + * + * uint64_t bpf_skb_cgroup_id(struct sk_buff *skb) + * Description + * Return the cgroup v2 id of the socket associated with the *skb*. + * This is roughly similar to the **bpf_get_cgroup_classid**\ () + * helper for cgroup v1 by providing a tag resp. identifier that + * can be matched on or used for map lookups e.g. to implement + * policy. The cgroup v2 id of a given path in the hierarchy is + * exposed in user space through the f_handle API in order to get + * to the same 64-bit id. + * + * This helper can be used on TC egress path, but not on ingress, + * and is available only if the kernel was compiled with the + * **CONFIG_SOCK_CGROUP_DATA** configuration option. + * Return + * The id is returned or 0 in case the id could not be retrieved. + * + * u64 bpf_get_current_cgroup_id(void) + * Return + * A 64-bit integer containing the current cgroup id based + * on the cgroup within which the current task is running. */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \ @@ -2082,7 +2153,11 @@ union bpf_attr { FN(lwt_push_encap), \ FN(lwt_seg6_store_bytes), \ FN(lwt_seg6_adjust_srh), \ - FN(lwt_seg6_action), + FN(lwt_seg6_action), \ + FN(rc_repeat), \ + FN(rc_keydown), \ + FN(skb_cgroup_id), \ + FN(get_current_cgroup_id), /* integer value in 'imm' field of BPF_CALL instruction selects which helper * function eBPF program intends to call @@ -2199,7 +2274,7 @@ struct bpf_tunnel_key { }; __u8 tunnel_tos; __u8 tunnel_ttl; - __u16 tunnel_ext; + __u16 tunnel_ext; /* Padding, future use. */ __u32 tunnel_label; }; @@ -2210,6 +2285,7 @@ struct bpf_xfrm_state { __u32 reqid; __u32 spi; /* Stored in network byte order */ __u16 family; + __u16 ext; /* Padding, future use. */ union { __u32 remote_ipv4; /* Stored in network byte order */ __u32 remote_ipv6[4]; /* Stored in network byte order */ @@ -2364,6 +2440,12 @@ struct bpf_sock_addr { __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 */ + __u32 msg_src_ip4; /* Allows 1,2,4-byte read an 4-byte write. + * Stored in network byte order. + */ + __u32 msg_src_ip6[4]; /* Allows 1,2,4-byte read an 4-byte write. + * Stored in network byte order. + */ }; /* User bpf_sock_ops struct to access socket values and specify request ops @@ -2531,8 +2613,10 @@ struct bpf_raw_tracepoint_args { #define BPF_FIB_LOOKUP_OUTPUT BIT(1) struct bpf_fib_lookup { - /* input */ - __u8 family; /* network family, AF_INET, AF_INET6, AF_MPLS */ + /* input: network family for lookup (AF_INET, AF_INET6) + * output: network family of egress nexthop + */ + __u8 family; /* set if lookup is to consider L4 data - e.g., FIB rules */ __u8 l4_protocol; @@ -2546,24 +2630,22 @@ struct bpf_fib_lookup { union { /* inputs to lookup */ __u8 tos; /* AF_INET */ - __be32 flowlabel; /* AF_INET6 */ + __be32 flowinfo; /* AF_INET6, flow_label + priority */ - /* output: metric of fib result */ - __u32 rt_metric; + /* output: metric of fib result (IPv4/IPv6 only) */ + __u32 rt_metric; }; union { - __be32 mpls_in; __be32 ipv4_src; __u32 ipv6_src[4]; /* in6_addr; network order */ }; - /* input to bpf_fib_lookup, *dst is destination address. - * output: bpf_fib_lookup sets to gateway address + /* input to bpf_fib_lookup, ipv{4,6}_dst is destination address in + * network header. output: bpf_fib_lookup sets to gateway address + * if FIB lookup returns gateway route */ union { - /* return for MPLS lookups */ - __be32 mpls_out[4]; /* support up to 4 labels */ __be32 ipv4_dst; __u32 ipv6_dst[4]; /* in6_addr; network order */ }; |