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from socket import AF_INET, AF_INET6, AF_UNIX, IPPROTO_TCP, inet_ntop
from struct import pack
from pyroute2.netlink import (
NETLINK_SOCK_DIAG,
NLM_F_MATCH,
NLM_F_REQUEST,
NLM_F_ROOT,
nla,
nlmsg,
)
from pyroute2.netlink.nlsocket import Marshal, NetlinkSocket
SOCK_DIAG_BY_FAMILY = 20
SOCK_DESTROY = 21
# states
SS_UNKNOWN = 0
SS_ESTABLISHED = 1
SS_SYN_SENT = 2
SS_SYN_RECV = 3
SS_FIN_WAIT1 = 4
SS_FIN_WAIT2 = 5
SS_TIME_WAIT = 6
SS_CLOSE = 7
SS_CLOSE_WAIT = 8
SS_LAST_ACK = 9
SS_LISTEN = 10
SS_CLOSING = 11
SS_MAX = 12
SS_ALL = (1 << SS_MAX) - 1
SS_CONN = SS_ALL & ~(
(1 << SS_LISTEN)
| (1 << SS_CLOSE)
| (1 << SS_TIME_WAIT)
| (1 << SS_SYN_RECV)
)
# multicast groups ids (for use with {add,drop}_membership)
SKNLGRP_NONE = 0
SKNLGRP_INET_TCP_DESTROY = 1
SKNLGRP_INET_UDP_DESTROY = 2
SKNLGRP_INET6_TCP_DESTROY = 3
SKNLGRP_INET6_UDP_DESTROY = 4
class sock_diag_req(nlmsg):
fields = (('sdiag_family', 'B'), ('sdiag_protocol', 'B'))
UDIAG_SHOW_NAME = 0x01
UDIAG_SHOW_VFS = 0x02
UDIAG_SHOW_PEER = 0x04
UDIAG_SHOW_ICONS = 0x08
UDIAG_SHOW_RQLEN = 0x10
UDIAG_SHOW_MEMINFO = 0x20
class inet_addr_codec(nlmsg):
def encode(self):
# FIXME: add human-friendly API to specify IP addresses as str
# (see also decode())
if self['idiag_src'] == 0:
self['idiag_src'] = (0, 0, 0, 0)
if self['idiag_dst'] == 0:
self['idiag_dst'] = (0, 0, 0, 0)
nlmsg.encode(self)
def decode(self):
nlmsg.decode(self)
if self[self.ffname] == AF_INET:
self['idiag_dst'] = inet_ntop(
AF_INET, pack('>I', self['idiag_dst'][0])
)
self['idiag_src'] = inet_ntop(
AF_INET, pack('>I', self['idiag_src'][0])
)
elif self[self.ffname] == AF_INET6:
self['idiag_dst'] = inet_ntop(
AF_INET6, pack('>IIII', *self['idiag_dst'])
)
self['idiag_src'] = inet_ntop(
AF_INET6, pack('>IIII', *self['idiag_src'])
)
class inet_diag_req(inet_addr_codec):
ffname = 'sdiag_family'
fields = (
('sdiag_family', 'B'),
('sdiag_protocol', 'B'),
('idiag_ext', 'B'),
('__pad', 'B'),
('idiag_states', 'I'),
('idiag_sport', '>H'),
('idiag_dport', '>H'),
('idiag_src', '>4I'),
('idiag_dst', '>4I'),
('idiag_if', 'I'),
('idiag_cookie', 'Q'),
)
class inet_diag_msg(inet_addr_codec):
ffname = 'idiag_family'
fields = (
('idiag_family', 'B'),
('idiag_state', 'B'),
('idiag_timer', 'B'),
('idiag_retrans', 'B'),
('idiag_sport', '>H'),
('idiag_dport', '>H'),
('idiag_src', '>4I'),
('idiag_dst', '>4I'),
('idiag_if', 'I'),
('idiag_cookie', 'Q'),
('idiag_expires', 'I'),
('idiag_rqueue', 'I'),
('idiag_wqueue', 'I'),
('idiag_uid', 'I'),
('idiag_inode', 'I'),
)
nla_map = (
('INET_DIAG_NONE', 'none'),
('INET_DIAG_MEMINFO', 'inet_diag_meminfo'),
# FIXME: must be protocol specific?
('INET_DIAG_INFO', 'tcp_info'),
('INET_DIAG_VEGASINFO', 'tcpvegas_info'),
('INET_DIAG_CONG', 'asciiz'),
('INET_DIAG_TOS', 'hex'),
('INET_DIAG_TCLASS', 'hex'),
('INET_DIAG_SKMEMINFO', 'hex'),
('INET_DIAG_SHUTDOWN', 'uint8'),
('INET_DIAG_DCTCPINFO', 'tcp_dctcp_info'),
('INET_DIAG_PROTOCOL', 'hex'),
('INET_DIAG_SKV6ONLY', 'uint8'),
('INET_DIAG_LOCALS', 'hex'),
('INET_DIAG_PEERS', 'hex'),
('INET_DIAG_PAD', 'hex'),
('INET_DIAG_MARK', 'hex'),
('INET_DIAG_BBRINFO', 'tcp_bbr_info'),
('INET_DIAG_CLASS_ID', 'uint32'),
('INET_DIAG_MD5SIG', 'hex'),
('INET_DIAG_ULP_INFO', 'hex'),
('INET_DIAG_SK_BPF_STORAGES', 'hex'),
('INET_DIAG_CGROUP_ID', 'uint64'),
)
class inet_diag_meminfo(nla):
fields = (
('idiag_rmem', 'I'),
('idiag_wmem', 'I'),
('idiag_fmem', 'I'),
('idiag_tmem', 'I'),
)
class tcpvegas_info(nla):
fields = (
('tcpv_enabled', 'I'),
('tcpv_rttcnt', 'I'),
('tcpv_rtt', 'I'),
('tcpv_minrtt', 'I'),
)
class tcp_dctcp_info(nla):
fields = (
('dctcp_enabled', 'H'),
('dctcp_ce_state', 'H'),
('dctcp_alpha', 'I'),
('dctcp_ab_ecn', 'I'),
('dctcp_ab_tot', 'I'),
)
class tcp_bbr_info(nla):
fields = (
('bbr_bw_lo', 'I'),
('bbr_bw_hi', 'I'),
('bbr_min_rtt', 'I'),
('bbr_pacing_gain', 'I'),
('bbr_cwnd_gain', 'I'),
)
class tcp_info(nla):
fields = (
('tcpi_state', 'B'),
('tcpi_ca_state', 'B'),
('tcpi_retransmits', 'B'),
('tcpi_probes', 'B'),
('tcpi_backoff', 'B'),
('tcpi_options', 'B'),
('tcpi_snd_wscale', 'B'), # tcpi_rcv_wscale -- in decode()
('tcpi_delivery_rate_app_limited', 'B'),
('tcpi_rto', 'I'),
('tcpi_ato', 'I'),
('tcpi_snd_mss', 'I'),
('tcpi_rcv_mss', 'I'),
('tcpi_unacked', 'I'),
('tcpi_sacked', 'I'),
('tcpi_lost', 'I'),
('tcpi_retrans', 'I'),
('tcpi_fackets', 'I'),
# Times
('tcpi_last_data_sent', 'I'),
('tcpi_last_ack_sent', 'I'),
('tcpi_last_data_recv', 'I'),
('tcpi_last_ack_recv', 'I'),
# Metrics
('tcpi_pmtu', 'I'),
('tcpi_rcv_ssthresh', 'I'),
('tcpi_rtt', 'I'),
('tcpi_rttvar', 'I'),
('tcpi_snd_ssthresh', 'I'),
('tcpi_snd_cwnd', 'I'),
('tcpi_advmss', 'I'),
('tcpi_reordering', 'I'),
('tcpi_rcv_rtt', 'I'),
('tcpi_rcv_space', 'I'),
('tcpi_total_retrans', 'I'),
('tcpi_pacing_rate', 'Q'),
('tcpi_max_pacing_rate', 'Q'),
('tcpi_bytes_acked', 'Q'),
('tcpi_bytes_received', 'Q'),
('tcpi_segs_out', 'I'),
('tcpi_segs_in', 'I'),
('tcpi_notsent_bytes', 'I'),
('tcpi_min_rtt', 'I'),
('tcpi_data_segs_in', 'I'),
('tcpi_data_segs_out', 'I'),
('tcpi_delivery_rate', 'Q'),
('tcpi_busy_time', 'Q'),
('tcpi_rwnd_limited', 'Q'),
('tcpi_sndbuf_limited', 'Q'),
('tcpi_delivered', 'I'),
('tcpi_delivered_ce', 'I'),
('tcpi_bytes_sent', 'Q'),
('tcpi_bytes_retrans', 'Q'),
('tcpi_dsack_dups', 'I'),
('tcpi_reord_seen', 'I'),
('tcpi_rcv_ooopack', 'I'),
('tcpi_snd_wnd', 'I'),
)
def decode(self):
# Fix tcpi_rcv_scale amd delivery_rate bit fields.
# In the C:
#
# __u8 tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
# __u8 tcpi_delivery_rate_app_limited:1;
#
nla.decode(self)
self['tcpi_rcv_wscale'] = self['tcpi_snd_wscale'] & 0xF
self['tcpi_snd_wscale'] = self['tcpi_snd_wscale'] & 0xF0 >> 4
self['tcpi_delivery_rate_app_limited'] = (
self['tcpi_delivery_rate_app_limited'] & 0x80 >> 7
)
class unix_diag_req(nlmsg):
fields = (
('sdiag_family', 'B'),
('sdiag_protocol', 'B'),
('__pad', 'H'),
('udiag_states', 'I'),
('udiag_ino', 'I'),
('udiag_show', 'I'),
('udiag_cookie', 'Q'),
)
class unix_diag_msg(nlmsg):
fields = (
('udiag_family', 'B'),
('udiag_type', 'B'),
('udiag_state', 'B'),
('__pad', 'B'),
('udiag_ino', 'I'),
('udiag_cookie', 'Q'),
)
nla_map = (
('UNIX_DIAG_NAME', 'asciiz'),
('UNIX_DIAG_VFS', 'unix_diag_vfs'),
('UNIX_DIAG_PEER', 'uint32'),
('UNIX_DIAG_ICONS', 'hex'),
('UNIX_DIAG_RQLEN', 'unix_diag_rqlen'),
('UNIX_DIAG_MEMINFO', 'hex'),
('UNIX_DIAG_SHUTDOWN', 'uint8'),
)
class unix_diag_vfs(nla):
fields = (('udiag_vfs_ino', 'I'), ('udiag_vfs_dev', 'I'))
class unix_diag_rqlen(nla):
fields = (('udiag_rqueue', 'I'), ('udiag_wqueue', 'I'))
class MarshalDiag(Marshal):
key_format = 'B'
# The family goes after the nlmsg header,
# IHHII = 4 + 2 + 2 + 4 + 4 = 16 bytes
key_offset = 16
# Please notice that the SOCK_DIAG Marshal
# uses not the nlmsg type, but sdiag_family
# to choose the proper class
msg_map = {
AF_UNIX: unix_diag_msg,
AF_INET: inet_diag_msg,
AF_INET6: inet_diag_msg,
}
# error type NLMSG_ERROR == 2 == AF_INET,
# it doesn't work for DiagSocket that way,
# so disable the error messages for now
error_type = -1
class DiagSocket(NetlinkSocket):
'''
Usage::
from pyroute2 import DiagSocket
with DiagSocket() as ds:
ds.bind()
sstats = ds.get_sock_stats()
'''
def __init__(self, fileno=None):
super(DiagSocket, self).__init__(NETLINK_SOCK_DIAG)
self.set_marshal(MarshalDiag())
def get_sock_stats(
self,
family=AF_UNIX,
states=SS_ALL,
protocol=IPPROTO_TCP,
extensions=0,
show=(
UDIAG_SHOW_NAME
| UDIAG_SHOW_VFS
| UDIAG_SHOW_PEER
| UDIAG_SHOW_ICONS
),
):
'''
Get sockets statistics.
ACHTUNG: the get_sock_stats() signature will be changed
before the next release, this one is a WIP-code!
'''
if family == AF_UNIX:
req = unix_diag_req()
req['udiag_states'] = states
req['udiag_show'] = show
elif family in (AF_INET, AF_INET6):
req = inet_diag_req()
req['idiag_states'] = states
req['sdiag_protocol'] = protocol
req['idiag_ext'] = extensions
else:
raise NotImplementedError()
req['sdiag_family'] = family
return tuple(
self.nlm_request(
req,
SOCK_DIAG_BY_FAMILY,
NLM_F_REQUEST | NLM_F_ROOT | NLM_F_MATCH,
)
)