diff options
| author | Lawrence Brakmo <brakmo@fb.com> | 2017-06-30 20:02:55 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-01 16:15:14 -0700 |
| commit | 04df41e343db9ca91a278ea14606bbaaf0491f2e (patch) | |
| tree | ad0fd4f7f553d2665852019acb9f7fedbef0616d | |
| parent | 6c4a01b27852347cd3c4d2bf0dadf157ea6c3c40 (diff) | |
bpf: update tools/include/uapi/linux/bpf.h
Update tools/include/uapi/linux/bpf.h to include changes related to new
bpf sock_ops program type.
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | tools/include/uapi/linux/bpf.h | 66 |
1 files changed, 65 insertions, 1 deletions
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index f94b48b168dc..284b3661f1df 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -120,12 +120,14 @@ enum bpf_prog_type { BPF_PROG_TYPE_LWT_IN, BPF_PROG_TYPE_LWT_OUT, BPF_PROG_TYPE_LWT_XMIT, + BPF_PROG_TYPE_SOCK_OPS, }; enum bpf_attach_type { BPF_CGROUP_INET_INGRESS, BPF_CGROUP_INET_EGRESS, BPF_CGROUP_INET_SOCK_CREATE, + BPF_CGROUP_SOCK_OPS, __MAX_BPF_ATTACH_TYPE }; @@ -518,6 +520,17 @@ union bpf_attr { * Set full skb->hash. * @skb: pointer to skb * @hash: hash to set + * + * int bpf_setsockopt(bpf_socket, level, optname, optval, optlen) + * Calls setsockopt. Not all opts are available, only those with + * integer optvals plus TCP_CONGESTION. + * Supported levels: SOL_SOCKET and IPROTO_TCP + * @bpf_socket: pointer to bpf_socket + * @level: SOL_SOCKET or IPROTO_TCP + * @optname: option name + * @optval: pointer to option value + * @optlen: length of optval in byes + * Return: 0 or negative error */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \ @@ -568,7 +581,8 @@ union bpf_attr { FN(probe_read_str), \ FN(get_socket_cookie), \ FN(get_socket_uid), \ - FN(set_hash), + FN(set_hash), \ + FN(setsockopt), /* integer value in 'imm' field of BPF_CALL instruction selects which helper * function eBPF program intends to call @@ -720,4 +734,54 @@ struct bpf_map_info { __u32 map_flags; } __attribute__((aligned(8))); +/* User bpf_sock_ops struct to access socket values and specify request ops + * and their replies. + * New fields can only be added at the end of this structure + */ +struct bpf_sock_ops { + __u32 op; + union { + __u32 reply; + __u32 replylong[4]; + }; + __u32 family; + __u32 remote_ip4; + __u32 local_ip4; + __u32 remote_ip6[4]; + __u32 local_ip6[4]; + __u32 remote_port; + __u32 local_port; +}; + +/* List of known BPF sock_ops operators. + * New entries can only be added at the end + */ +enum { + BPF_SOCK_OPS_VOID, + BPF_SOCK_OPS_TIMEOUT_INIT, /* Should return SYN-RTO value to use or + * -1 if default value should be used + */ + BPF_SOCK_OPS_RWND_INIT, /* Should return initial advertized + * window (in packets) or -1 if default + * value should be used + */ + BPF_SOCK_OPS_TCP_CONNECT_CB, /* Calls BPF program right before an + * active connection is initialized + */ + BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB, /* Calls BPF program when an + * active connection is + * established + */ + BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB, /* Calls BPF program when a + * passive connection is + * established + */ + BPF_SOCK_OPS_NEEDS_ECN, /* If connection's congestion control + * needs ECN + */ +}; + +#define TCP_BPF_IW 1001 /* Set TCP initial congestion window */ +#define TCP_BPF_SNDCWND_CLAMP 1002 /* Set sndcwnd_clamp */ + #endif /* _UAPI__LINUX_BPF_H__ */ |