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Commit | Line | Data |
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1 | package PVE::Network; | |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | use PVE::Tools qw(run_command); | |
6 | use PVE::ProcFSTools; | |
7 | use PVE::INotify; | |
8 | use File::Basename; | |
9 | ||
10 | # host network related utility functions | |
11 | ||
12 | sub setup_tc_rate_limit { | |
13 | my ($iface, $rate, $burst, $debug) = @_; | |
14 | ||
15 | system("/sbin/tc class del dev $iface parent 1: classid 1:1 >/dev/null 2>&1"); | |
16 | system("/sbin/tc filter del dev $iface parent ffff: protocol ip prio 50 estimator 1sec 8sec >/dev/null 2>&1"); | |
17 | system("/sbin/tc qdisc del dev $iface ingress >/dev/null 2>&1"); | |
18 | system("/sbin/tc qdisc del dev $iface root >/dev/null 2>&1"); | |
19 | ||
20 | return if !$rate; | |
21 | ||
22 | run_command("/sbin/tc qdisc add dev $iface handle ffff: ingress"); | |
23 | ||
24 | # this does not work wit virtio - don't know why (setting "mtu 64kb" does not help) | |
25 | #run_command("/sbin/tc filter add dev $iface parent ffff: protocol ip prio 50 u32 match ip src 0.0.0.0/0 police rate ${rate}bps burst ${burst}b drop flowid :1"); | |
26 | # so we use avrate instead | |
27 | run_command("/sbin/tc filter add dev $iface parent ffff: " . | |
28 | "protocol ip prio 50 estimator 1sec 8sec " . | |
29 | "u32 match ip src 0.0.0.0/0 police avrate ${rate}bps drop flowid :1"); | |
30 | ||
31 | # tbf does not work for unknown reason | |
32 | #$TC qdisc add dev $DEV root tbf rate $RATE latency 100ms burst $BURST | |
33 | # so we use htb instead | |
34 | run_command("/sbin/tc qdisc add dev $iface root handle 1: htb default 1"); | |
35 | run_command("/sbin/tc class add dev $iface parent 1: classid 1:1 " . | |
36 | "htb rate ${rate}bps burst ${burst}b"); | |
37 | ||
38 | if ($debug) { | |
39 | print "DEBUG tc settings\n"; | |
40 | system("/sbin/tc qdisc ls dev $iface"); | |
41 | system("/sbin/tc class ls dev $iface"); | |
42 | system("/sbin/tc filter ls dev $iface parent ffff:"); | |
43 | } | |
44 | } | |
45 | ||
46 | sub tap_rate_limit { | |
47 | my ($iface, $rate) = @_; | |
48 | ||
49 | my $debug = 0; | |
50 | $rate = int($rate*1024*1024); | |
51 | my $burst = 1024*1024; | |
52 | ||
53 | setup_tc_rate_limit($iface, $rate, $burst, $debug); | |
54 | } | |
55 | ||
56 | sub tap_create { | |
57 | my ($iface, $bridge) = @_; | |
58 | ||
59 | die "unable to get bridge setting\n" if !$bridge; | |
60 | ||
61 | my $bridgemtu = PVE::Tools::file_read_firstline("/sys/class/net/$bridge/mtu"); | |
62 | die "bridge '$bridge' does not exist\n" if !$bridgemtu; | |
63 | ||
64 | eval{ PVE::Tools::run_command("/sbin/ifconfig $iface 0.0.0.0 promisc up mtu $bridgemtu");}; | |
65 | die "interface activation failed\n" if $@; | |
66 | } | |
67 | ||
68 | sub tap_plug { | |
69 | my ($iface, $bridge, $tag) = @_; | |
70 | ||
71 | #cleanup old port config from any openvswitch bridge | |
72 | eval {run_command("/usr/bin/ovs-vsctl del-port $iface", outfunc => sub {}, errfunc => sub {}) }; | |
73 | ||
74 | if (-d "/sys/class/net/$bridge/bridge"){ | |
75 | my $newbridge = activate_bridge_vlan($bridge, $tag); | |
76 | copy_bridge_config($bridge, $newbridge) if $bridge ne $newbridge; | |
77 | ||
78 | system ("/sbin/brctl addif $newbridge $iface") == 0 || | |
79 | die "can't add interface to bridge\n"; | |
80 | }else{ | |
81 | my $cmd = "/usr/bin/ovs-vsctl add-port $bridge $iface"; | |
82 | $cmd .= " tag=$tag" if $tag; | |
83 | system ($cmd) == 0 || | |
84 | die "can't add interface to bridge\n"; | |
85 | } | |
86 | } | |
87 | ||
88 | sub tap_unplug { | |
89 | my ($iface, $bridge, $tag) = @_; | |
90 | ||
91 | if (-d "/sys/class/net/$bridge/bridge"){ | |
92 | ||
93 | $bridge .= "v$tag" if $tag; | |
94 | ||
95 | system ("/sbin/brctl delif $bridge $iface") == 0 || | |
96 | die "can't del interface from bridge\n"; | |
97 | }else{ | |
98 | system ("/usr/bin/ovs-vsctl del-port $iface") == 0 || | |
99 | die "can't del interface from bridge\n"; | |
100 | } | |
101 | } | |
102 | ||
103 | sub copy_bridge_config { | |
104 | my ($br0, $br1) = @_; | |
105 | ||
106 | return if $br0 eq $br1; | |
107 | ||
108 | my $br_configs = [ 'ageing_time', 'stp_state', 'priority', 'forward_delay', | |
109 | 'hello_time', 'max_age', 'multicast_snooping', 'multicast_querier']; | |
110 | ||
111 | foreach my $sysname (@$br_configs) { | |
112 | eval { | |
113 | my $v0 = PVE::Tools::file_read_firstline("/sys/class/net/$br0/bridge/$sysname"); | |
114 | my $v1 = PVE::Tools::file_read_firstline("/sys/class/net/$br1/bridge/$sysname"); | |
115 | if ($v0 ne $v1) { | |
116 | system("echo \"$v0\" > /sys/class/net/$br1/bridge/$sysname") == 0 || | |
117 | warn "unable to set bridge config '$sysname'\n"; | |
118 | } | |
119 | }; | |
120 | warn $@ if $@; | |
121 | } | |
122 | } | |
123 | ||
124 | sub activate_bridge_vlan { | |
125 | my ($bridge, $tag_param) = @_; | |
126 | ||
127 | die "bridge '$bridge' is not active\n" if ! -d "/sys/class/net/$bridge"; | |
128 | ||
129 | return $bridge if !defined($tag_param); # no vlan, simply return | |
130 | ||
131 | my $tag = int($tag_param); | |
132 | ||
133 | die "got strange vlan tag '$tag_param'\n" if $tag < 1 || $tag > 4094; | |
134 | ||
135 | my $bridgevlan = "${bridge}v$tag"; | |
136 | ||
137 | my $dir = "/sys/class/net/$bridge/brif"; | |
138 | ||
139 | #check if we have an only one ethX or bondX interface in the bridge | |
140 | ||
141 | my $iface; | |
142 | PVE::Tools::dir_glob_foreach($dir, '((eth|bond)\d+)', sub { | |
143 | my ($slave) = @_; | |
144 | ||
145 | die "more then one physical interfaces on bridge '$bridge'\n" if $iface; | |
146 | $iface = $slave; | |
147 | ||
148 | }); | |
149 | ||
150 | die "no physical interface on bridge '$bridge'\n" if !$iface; | |
151 | ||
152 | my $ifacevlan = "${iface}.$tag"; | |
153 | ||
154 | # create vlan on $iface is not already exist | |
155 | if (! -d "/sys/class/net/$ifacevlan") { | |
156 | system("/sbin/vconfig add $iface $tag") == 0 || | |
157 | die "can't add vlan tag $tag to interface $iface\n"; | |
158 | } | |
159 | ||
160 | # be sure to have the $ifacevlan up | |
161 | system("/sbin/ip link set $ifacevlan up") == 0 || | |
162 | die "can't up interface $ifacevlan\n"; | |
163 | ||
164 | # test if $vlaniface is already enslaved in another bridge | |
165 | my $path= "/sys/class/net/$ifacevlan/brport/bridge"; | |
166 | if (-l $path) { | |
167 | my $tbridge = basename(readlink($path)); | |
168 | if ($tbridge eq $bridgevlan) { | |
169 | # already member of bridge - assume setup is already done | |
170 | return $bridgevlan; | |
171 | } else { | |
172 | die "interface $ifacevlan already exist in bridge $tbridge\n"; | |
173 | } | |
174 | } | |
175 | ||
176 | # add bridgevlan if it doesn't already exist | |
177 | if (! -d "/sys/class/net/$bridgevlan") { | |
178 | system("/sbin/brctl addbr $bridgevlan") == 0 || | |
179 | die "can't add bridge $bridgevlan\n"; | |
180 | } | |
181 | ||
182 | #fixme: set other bridge flags | |
183 | ||
184 | # be sure to have the bridge up | |
185 | system("/sbin/ip link set $bridgevlan up") == 0 || | |
186 | die "can't up bridge $bridgevlan\n"; | |
187 | ||
188 | # add $ifacevlan to the bridge | |
189 | system("/sbin/brctl addif $bridgevlan $ifacevlan") == 0 || | |
190 | die "can't add interface $ifacevlan to bridge $bridgevlan\n"; | |
191 | ||
192 | return $bridgevlan; | |
193 | } | |
194 | ||
195 | 1; |