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bpf: update tools/include/uapi/linux/bpf.h

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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>
This commit is contained in:
Lawrence Brakmo 2017-06-30 20:02:55 -07:00 • committed by David S. Miller
parent 6c4a01b278
commit 04df41e343
1 changed files with 65 additions and 1 deletions
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66
tools/include/uapi/linux/bpf.h
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@ -120,12 +120,14 @@ enum bpf_prog_type {
BPF_PROG_TYPE_LWT_IN, BPF_PROG_TYPE_LWT_IN,
BPF_PROG_TYPE_LWT_OUT, BPF_PROG_TYPE_LWT_OUT,
BPF_PROG_TYPE_LWT_XMIT, BPF_PROG_TYPE_LWT_XMIT,
BPF_PROG_TYPE_SOCK_OPS,
}; };
enum bpf_attach_type { enum bpf_attach_type {
BPF_CGROUP_INET_INGRESS, BPF_CGROUP_INET_INGRESS,
BPF_CGROUP_INET_EGRESS, BPF_CGROUP_INET_EGRESS,
BPF_CGROUP_INET_SOCK_CREATE, BPF_CGROUP_INET_SOCK_CREATE,
BPF_CGROUP_SOCK_OPS,
__MAX_BPF_ATTACH_TYPE __MAX_BPF_ATTACH_TYPE
}; };
@ -518,6 +520,17 @@ union bpf_attr {
* Set full skb->hash. * Set full skb->hash.
* @skb: pointer to skb * @skb: pointer to skb
* @hash: hash to set * @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) \ #define __BPF_FUNC_MAPPER(FN) \
FN(unspec), \ FN(unspec), \
@ -568,7 +581,8 @@ union bpf_attr {
FN(probe_read_str), \ FN(probe_read_str), \
FN(get_socket_cookie), \ FN(get_socket_cookie), \
FN(get_socket_uid), \ FN(get_socket_uid), \
FN(set_hash), FN(set_hash), \
FN(setsockopt),
/* integer value in 'imm' field of BPF_CALL instruction selects which helper /* integer value in 'imm' field of BPF_CALL instruction selects which helper
* function eBPF program intends to call * function eBPF program intends to call
@ -720,4 +734,54 @@ struct bpf_map_info {
__u32 map_flags; __u32 map_flags;
} __attribute__((aligned(8))); } __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__ */ #endif /* _UAPI__LINUX_BPF_H__ */