056ede6cfa
Enhancement to the tcp_diag interface used by the iproute2 ss command to report the tcp congestion control being used by a socket. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
128 lines
2.1 KiB
C
128 lines
2.1 KiB
C
#ifndef _TCP_DIAG_H_
|
|
#define _TCP_DIAG_H_ 1
|
|
|
|
/* Just some random number */
|
|
#define TCPDIAG_GETSOCK 18
|
|
|
|
/* Socket identity */
|
|
struct tcpdiag_sockid
|
|
{
|
|
__u16 tcpdiag_sport;
|
|
__u16 tcpdiag_dport;
|
|
__u32 tcpdiag_src[4];
|
|
__u32 tcpdiag_dst[4];
|
|
__u32 tcpdiag_if;
|
|
__u32 tcpdiag_cookie[2];
|
|
#define TCPDIAG_NOCOOKIE (~0U)
|
|
};
|
|
|
|
/* Request structure */
|
|
|
|
struct tcpdiagreq
|
|
{
|
|
__u8 tcpdiag_family; /* Family of addresses. */
|
|
__u8 tcpdiag_src_len;
|
|
__u8 tcpdiag_dst_len;
|
|
__u8 tcpdiag_ext; /* Query extended information */
|
|
|
|
struct tcpdiag_sockid id;
|
|
|
|
__u32 tcpdiag_states; /* States to dump */
|
|
__u32 tcpdiag_dbs; /* Tables to dump (NI) */
|
|
};
|
|
|
|
enum
|
|
{
|
|
TCPDIAG_REQ_NONE,
|
|
TCPDIAG_REQ_BYTECODE,
|
|
};
|
|
|
|
#define TCPDIAG_REQ_MAX TCPDIAG_REQ_BYTECODE
|
|
|
|
/* Bytecode is sequence of 4 byte commands followed by variable arguments.
|
|
* All the commands identified by "code" are conditional jumps forward:
|
|
* to offset cc+"yes" or to offset cc+"no". "yes" is supposed to be
|
|
* length of the command and its arguments.
|
|
*/
|
|
|
|
struct tcpdiag_bc_op
|
|
{
|
|
unsigned char code;
|
|
unsigned char yes;
|
|
unsigned short no;
|
|
};
|
|
|
|
enum
|
|
{
|
|
TCPDIAG_BC_NOP,
|
|
TCPDIAG_BC_JMP,
|
|
TCPDIAG_BC_S_GE,
|
|
TCPDIAG_BC_S_LE,
|
|
TCPDIAG_BC_D_GE,
|
|
TCPDIAG_BC_D_LE,
|
|
TCPDIAG_BC_AUTO,
|
|
TCPDIAG_BC_S_COND,
|
|
TCPDIAG_BC_D_COND,
|
|
};
|
|
|
|
struct tcpdiag_hostcond
|
|
{
|
|
__u8 family;
|
|
__u8 prefix_len;
|
|
int port;
|
|
__u32 addr[0];
|
|
};
|
|
|
|
/* Base info structure. It contains socket identity (addrs/ports/cookie)
|
|
* and, alas, the information shown by netstat. */
|
|
struct tcpdiagmsg
|
|
{
|
|
__u8 tcpdiag_family;
|
|
__u8 tcpdiag_state;
|
|
__u8 tcpdiag_timer;
|
|
__u8 tcpdiag_retrans;
|
|
|
|
struct tcpdiag_sockid id;
|
|
|
|
__u32 tcpdiag_expires;
|
|
__u32 tcpdiag_rqueue;
|
|
__u32 tcpdiag_wqueue;
|
|
__u32 tcpdiag_uid;
|
|
__u32 tcpdiag_inode;
|
|
};
|
|
|
|
/* Extensions */
|
|
|
|
enum
|
|
{
|
|
TCPDIAG_NONE,
|
|
TCPDIAG_MEMINFO,
|
|
TCPDIAG_INFO,
|
|
TCPDIAG_VEGASINFO,
|
|
TCPDIAG_CONG,
|
|
};
|
|
|
|
#define TCPDIAG_MAX TCPDIAG_CONG
|
|
|
|
|
|
/* TCPDIAG_MEM */
|
|
|
|
struct tcpdiag_meminfo
|
|
{
|
|
__u32 tcpdiag_rmem;
|
|
__u32 tcpdiag_wmem;
|
|
__u32 tcpdiag_fmem;
|
|
__u32 tcpdiag_tmem;
|
|
};
|
|
|
|
/* TCPDIAG_VEGASINFO */
|
|
|
|
struct tcpvegas_info {
|
|
__u32 tcpv_enabled;
|
|
__u32 tcpv_rttcnt;
|
|
__u32 tcpv_rtt;
|
|
__u32 tcpv_minrtt;
|
|
};
|
|
|
|
#endif /* _TCP_DIAG_H_ */
|