Change Details

# kldload ng_bridge # kldload ng_eiface # ngctl try some illegal link names first + mkpeer . bridge b1 link012345 ngctl: send msg: Invalid argument create node + mkpeer . bridge b1 link12345 try more illegal link names + mkpeer . bridge b2 link12345678901234567890 ngctl: send msg: Invalid argument + mkpeer . bridge b2 123 ngctl: send msg: Invalid argument + mkpeer . bridge b2 link123test ngctl: send msg: Invalid argument + mkpeer . bridge b2 123link ngctl: send msg: Invalid argument create node + mkpeer . bridge b2 link12345 add interfaces to the bridges + mkpeer b1 eiface link0 ether + mkpeer b2 eiface link0 ether + name b1.link0 if1 + name b2.link0 if2 increase debuglevel and customize timeouts for loop detection + msg b1 setconfig { debugLevel=2 loopTimeout=60 maxStaleness=900 minStableAge=1 } + msg b2 setconfig { debugLevel=2 loopTimeout=30 maxStaleness=900 minStableAge=1 } remove from controlling node + rmhook b1 + rmhook b2 cross-connect the nodes (incl selfconnect and multiple assignment) + connect if1:ether if1:ether link1 link2 ngctl: send msg: Too many levels of symbolic links + connect if1:ether if2:ether link1 link2 + connect if1:ether if2:ether link1 link2 ngctl: send msg: File exists build a loop + connect if1:ether if2:ether link654321 link123456 summary of the structure + list -l Name: <unnamed> Type: bridge ID: 0000002f Num hooks: 3 Local hook Peer name Peer type Peer ID Peer hook ---------- --------- --------- ------- --------- link1 <unnamed> bridge 00000034 link2 link654321 <unnamed> bridge 00000034 link123456 link0 if1 eiface 00000035 ether Name: <unnamed> Type: bridge ID: 00000034 Num hooks: 3 Local hook Peer name Peer type Peer ID Peer hook ---------- --------- --------- ------- --------- link2 <unnamed> bridge 0000002f link1 link123456 <unnamed> bridge 0000002f link654321 link0 if2 eiface 00000036 ether Name: if1 Type: eiface ID: 00000035 Num hooks: 1 Local hook Peer name Peer type Peer ID Peer hook ---------- --------- --------- ------- --------- ether <unnamed> bridge 0000002f link0 Name: if2 Type: eiface ID: 00000036 Num hooks: 1 Local hook Peer name Peer type Peer ID Peer hook ---------- --------- --------- ------- --------- ether <unnamed> bridge 00000034 link0 bring an interface into a usable state + msg if1: set 00:01:02:03:04:05 back on the shell, test the connectivity (the eiface nodes may have different names) # ifconfig ngeth2 up # ifconfig ngeth3 up # tcpdump -nei ngeth3 -s0 -vv & tcpdump: listening on ngeth3, link-type EN10MB (Ethernet), capture size 262144 bytes # dhclient -d ngeth2 DHCPDISCOVER on ngeth2 to 255.255.255.255 port 67 interval 7 16:27:22.651839 00:01:02:03:04:05 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328) 0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request from 00:01:02:03:04:05, length 300, xid 0x836640d6, Flags [none] (0x0000) Client-Ethernet-Address 00:01:02:03:04:05 Vendor-rfc1048 Extensions Magic Cookie 0x63825363 DHCP-Message Option 53, length 1: Discover Client-ID Option 61, length 7: ether 00:01:02:03:04:05 Hostname Option 12, length 6: "a10nsp" Parameter-Request Option 55, length 10: Subnet-Mask, BR, Time-Zone, Classless-Static-Route Default-Gateway, Domain-Name, Domain-Name-Server, Hostname Option 119, MTU DHCPDISCOVER on ngeth2 to 255.255.255.255 port 67 interval 8 16:27:29.727550 00:01:02:03:04:05 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328) 0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request from 00:01:02:03:04:05, length 300, xid 0x836640d6, secs 7, Flags [none] (0x0000) Client-Ethernet-Address 00:01:02:03:04:05 Vendor-rfc1048 Extensions Magic Cookie 0x63825363 DHCP-Message Option 53, length 1: Discover Client-ID Option 61, length 7: ether 00:01:02:03:04:05 Hostname Option 12, length 6: "a10nsp" Parameter-Request Option 55, length 10: Subnet-Mask, BR, Time-Zone, Classless-Static-Route Default-Gateway, Domain-Name, Domain-Name-Server, Hostname Option 119, MTU ^C show statistics # ngctl + msg if1:ether getstats 1 Rec'd response "getstats" (4) from "[2f]:": Args: { recvOctets=342 recvPackets=1 recvBroadcast=1 loopDrops=3 loopDetects=1 } + msg if1:ether getstats 654321 Rec'd response "getstats" (4) from "[2f]:": Args: { xmitOctets=1026 xmitPackets=3 xmitBroadcasts=3 } + msg if1:ether getstats 0 Rec'd response "getstats" (4) from "[2f]:": Args: { recvOctets=1026 recvPackets=3 recvBroadcast=3 } + msg if2:ether getstats 2 Rec'd response "getstats" (4) from "[34]:": Args: { recvOctets=342 recvPackets=1 recvBroadcast=1 loopDrops=3 loopDetects=1 } + msg if2:ether getstats 123456 Rec'd response "getstats" (4) from "[34]:": Args: { recvOctets=1026 recvPackets=3 recvBroadcast=3 } + msg if2:ether getstats 0 Rec'd response "getstats" (4) from "[34]:": Args: { xmitOctets=1026 xmitPackets=3 xmitBroadcasts=3 } try illegal queries + msg if2:ether getstats 1 ngctl: send msg: Socket is not connected clear state of a single side of an hook, should not affect the peer + msg if2:ether getclrstats 2 Rec'd response "getclrstats" (6) from "[34]:": Args: { recvOctets=342 recvPackets=1 recvBroadcast=1 loopDrops=3 loopDetects=1 } + msg if2:ether getstats 2 Rec'd response "getstats" (4) from "[34]:": Args: {} + msg if1:ether getstats 1 Rec'd response "getstats" (4) from "[2f]:": Args: { recvOctets=342 recvPackets=1 recvBroadcast=1 loopDrops=3 loopDetects=1 } bring the test network down + shutdown if1:ether + shutdown if2:ether + shutdown if1: + shutdown if2: tcpdump: pcap_loop: The interface went down 2 packets captured 2 packets received by filter 0 packets dropped by kernel [1] + Exit 1 tcpdump -nei ngeth3 -s0 -vv unload the module and check for memory leaks # kldunload ng_bridge # dmesg | tail ngeth2: link state changed to UP ngeth3: link state changed to UP ngeth3: promiscuous mode enabled ng_bridge: [2f]: loopback detected on link1 ng_bridge: [34]: loopback detected on link2 ng_bridge: [34]: restoring looped back link2 ng_bridge: [2f]: restoring looped back link1 ngeth2: link state changed to DOWN ngeth3: link state changed to DOWN ngeth3: promiscuous mode disabled

``` # kldload ng_bridge # kldload ng_eiface # ngctl ``` try some illegal link names first ``` + mkpeer . bridge b1 link012345 ngctl: send msg: Invalid argument ``` create node + mkpeer . bridge b1 link12345 ``` try more illegal link names ``` + mkpeer . bridge b2 link12345678901234567890 ngctl: send msg: Invalid argument + mkpeer . bridge b2 123 ngctl: send msg: Invalid argument + mkpeer . bridge b2 link123test ngctl: send msg: Invalid argument + mkpeer . bridge b2 123link ngctl: send msg: Invalid argument ``` create node ``` + mkpeer . bridge b2 link12345 ``` add interfaces to the bridges ``` + mkpeer b1 eiface link0 ether + mkpeer b2 eiface link0 ether + name b1.link0 if1 + name b2.link0 if2 ``` increase debuglevel and customize timeouts for loop detection ``` + msg b1 setconfig { debugLevel=2 loopTimeout=60 maxStaleness=900 minStableAge=1 } + msg b2 setconfig { debugLevel=2 loopTimeout=30 maxStaleness=900 minStableAge=1 } ``` remove from controlling node ``` + rmhook b1 + rmhook b2 ``` cross-connect the nodes (incl selfconnect and multiple assignment) ``` + connect if1:ether if1:ether link1 link2 ngctl: send msg: Too many levels of symbolic links + connect if1:ether if2:ether link1 link2 + connect if1:ether if2:ether link1 link2 ngctl: send msg: File exists ``` build a loop ``` + connect if1:ether if2:ether link654321 link123456 ``` summary of the structure ``` + list -l Name: <unnamed> Type: bridge ID: 0000002f Num hooks: 3 Local hook Peer name Peer type Peer ID Peer hook ---------- --------- --------- ------- --------- link1 <unnamed> bridge 00000034 link2 link654321 <unnamed> bridge 00000034 link123456 link0 if1 eiface 00000035 ether Name: <unnamed> Type: bridge ID: 00000034 Num hooks: 3 Local hook Peer name Peer type Peer ID Peer hook ---------- --------- --------- ------- --------- link2 <unnamed> bridge 0000002f link1 link123456 <unnamed> bridge 0000002f link654321 link0 if2 eiface 00000036 ether Name: if1 Type: eiface ID: 00000035 Num hooks: 1 Local hook Peer name Peer type Peer ID Peer hook ---------- --------- --------- ------- --------- ether <unnamed> bridge 0000002f link0 Name: if2 Type: eiface ID: 00000036 Num hooks: 1 Local hook Peer name Peer type Peer ID Peer hook ---------- --------- --------- ------- --------- ether <unnamed> bridge 00000034 link0 ``` bring an interface into a usable state ``` + msg if1: set 00:01:02:03:04:05 ``` back on the shell, test the connectivity (the eiface nodes may have different names) ``` # ifconfig ngeth2 up # ifconfig ngeth3 up # tcpdump -nei ngeth3 -s0 -vv & tcpdump: listening on ngeth3, link-type EN10MB (Ethernet), capture size 262144 bytes # dhclient -d ngeth2 DHCPDISCOVER on ngeth2 to 255.255.255.255 port 67 interval 7 16:27:22.651839 00:01:02:03:04:05 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328) 0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request from 00:01:02:03:04:05, length 300, xid 0x836640d6, Flags [none] (0x0000) Client-Ethernet-Address 00:01:02:03:04:05 Vendor-rfc1048 Extensions Magic Cookie 0x63825363 DHCP-Message Option 53, length 1: Discover Client-ID Option 61, length 7: ether 00:01:02:03:04:05 Hostname Option 12, length 6: "a10nsp" Parameter-Request Option 55, length 10: Subnet-Mask, BR, Time-Zone, Classless-Static-Route Default-Gateway, Domain-Name, Domain-Name-Server, Hostname Option 119, MTU DHCPDISCOVER on ngeth2 to 255.255.255.255 port 67 interval 8 16:27:29.727550 00:01:02:03:04:05 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328) 0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request from 00:01:02:03:04:05, length 300, xid 0x836640d6, secs 7, Flags [none] (0x0000) Client-Ethernet-Address 00:01:02:03:04:05 Vendor-rfc1048 Extensions Magic Cookie 0x63825363 DHCP-Message Option 53, length 1: Discover Client-ID Option 61, length 7: ether 00:01:02:03:04:05 Hostname Option 12, length 6: "a10nsp" Parameter-Request Option 55, length 10: Subnet-Mask, BR, Time-Zone, Classless-Static-Route Default-Gateway, Domain-Name, Domain-Name-Server, Hostname Option 119, MTU ^C ``` show statistics ``` # ngctl + msg if1:ether getstats 1 Rec'd response "getstats" (4) from "[2f]:": Args: { recvOctets=342 recvPackets=1 recvBroadcast=1 loopDrops=3 loopDetects=1 } + msg if1:ether getstats 654321 Rec'd response "getstats" (4) from "[2f]:": Args: { xmitOctets=1026 xmitPackets=3 xmitBroadcasts=3 } + msg if1:ether getstats 0 Rec'd response "getstats" (4) from "[2f]:": Args: { recvOctets=1026 recvPackets=3 recvBroadcast=3 } + msg if2:ether getstats 2 Rec'd response "getstats" (4) from "[34]:": Args: { recvOctets=342 recvPackets=1 recvBroadcast=1 loopDrops=3 loopDetects=1 } + msg if2:ether getstats 123456 Rec'd response "getstats" (4) from "[34]:": Args: { recvOctets=1026 recvPackets=3 recvBroadcast=3 } + msg if2:ether getstats 0 Rec'd response "getstats" (4) from "[34]:": Args: { xmitOctets=1026 xmitPackets=3 xmitBroadcasts=3 } ``` try illegal queries ``` + msg if2:ether getstats 1 ngctl: send msg: Socket is not connected ``` show forwarding table (the new interface) ``` + msg if2:ether gettable Rec'd response "gettable" (7) from "[2f]:": Args: { numHosts=1 hosts=[ { addr=00:01:02:03:04:05 hook="link654321" age=30 staleness=30 } ] } + msg if1:ether gettable Rec'd response "gettable" (7) from "[34]:": Args: { numHosts=1 hosts=[ { addr=00:01:02:03:04:05 hook="link0" age=37 staleness=37 } ] } ``` clear state of a single side of an hook, should not affect the peer ``` + msg if2:ether getclrstats 2 Rec'd response "getclrstats" (6) from "[34]:": Args: { recvOctets=342 recvPackets=1 recvBroadcast=1 loopDrops=3 loopDetects=1 } + msg if2:ether getstats 2 Rec'd response "getstats" (4) from "[34]:": Args: {} + msg if1:ether getstats 1 Rec'd response "getstats" (4) from "[2f]:": Args: { recvOctets=342 recvPackets=1 recvBroadcast=1 loopDrops=3 loopDetects=1 } ``` bring the test network down ``` + shutdown if1:ether + shutdown if2:ether + shutdown if1: + shutdown if2: tcpdump: pcap_loop: The interface went down 2 packets captured 2 packets received by filter 0 packets dropped by kernel [1] + Exit 1 tcpdump -nei ngeth3 -s0 -vv ``` unload the module and check for memory leaks ``` # kldunload ng_bridge # dmesg | tail ngeth2: link state changed to UP ngeth3: link state changed to UP ngeth3: promiscuous mode enabled ng_bridge: [2f]: loopback detected on link1 ng_bridge: [34]: loopback detected on link2 ng_bridge: [34]: restoring looped back link2 ng_bridge: [2f]: restoring looped back link1 ngeth2: link state changed to DOWN ngeth3: link state changed to DOWN ngeth3: promiscuous mode disabled ``` Nothing.