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Date: Wed, 27 Apr 2011 17:28:49 +0800
From: Wei Yongjun <yjwei@...fujitsu.com>
To: Michio Honda <micchie@....wide.ad.jp>
CC: netdev@...r.kernel.org, YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
Subject: Re: [PATCH 0/6] sctp: Auto-ASCONF patch series
> From 9ede9db0ec4b03d3061a5bfed78328cb5528b908 Mon Sep 17 00:00:00 2001
> From: Michio Honda <micchie@....wide.ad.jp>
> Date: Wed, 27 Apr 2011 17:16:21 +0900
> Subject: [PATCH 0/6] sctp: Auto-ASCONF patch series
>
> Series of 6 patches to support auto_asconf and the other related functionalities that auto_asconf relies on.
>
> Michio Honda (5):
> sctp: Add ADD/DEL ASCONF handling at the receiver.
> sctp: Add Auto-ASCONF support (core).
> sctp: Add sysctl support for Auto-ASCONF.
> sctp: Add socket option operation for Auto-ASCONF.
> sctp: sctp: Add ASCONF operation on the single-homed host
>
> YOSHIFUJI Hideaki (1):
> sctp: Allow regular C expression in 4th argument for
> SCTP_DEBUG_PRINTK_IPADDR macro.
When I test this patchset using IPv4 only socket,
Host1:
#sctp_test -H 0.0.0.0 -P 9000 -l
Host2:
#sctp_test -H 0.0.0.0 -P 9000 -h 192.168.0.19 -p 9000 -s -x 1 -D -T
I got following unexpected thing, IPv6 address be added to the asoc.
Frame 3 (118 bytes on wire, 118 bytes captured)
Arrival Time: Apr 27, 2011 17:17:59.572897000
[Time delta from previous captured frame: 13.804056000 seconds]
[Time delta from previous displayed frame: 13.804056000 seconds]
[Time since reference or first frame: 13.804105000 seconds]
Frame Number: 3
Frame Length: 118 bytes
Capture Length: 118 bytes
[Frame is marked: False]
[Protocols in frame: eth:ip:sctp]
Ethernet II, Src: RealtekU_1a:f0:5c (52:54:00:1a:f0:5c), Dst: RealtekU_21:3c:7c (52:54:00:21:3c:7c)
Destination: RealtekU_21:3c:7c (52:54:00:21:3c:7c)
Address: RealtekU_21:3c:7c (52:54:00:21:3c:7c)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
Source: RealtekU_1a:f0:5c (52:54:00:1a:f0:5c)
Address: RealtekU_1a:f0:5c (52:54:00:1a:f0:5c)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
Type: IP (0x0800)
Internet Protocol, Src: 192.168.0.21 (192.168.0.21), Dst: 192.168.0.19 (192.168.0.19)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x02 (DSCP 0x00: Default; ECN: 0x02)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..1. = ECN-Capable Transport (ECT): 1
.... ...0 = ECN-CE: 0
Total Length: 104
Identification: 0x001e (30)
Flags: 0x02 (Don't Fragment)
0.. = Reserved bit: Not Set
.1. = Don't fragment: Set
..0 = More fragments: Not Set
Fragment offset: 0
Time to live: 64
Protocol: SCTP (0x84)
Header checksum: 0xb879 [correct]
[Good: True]
[Bad : False]
Source: 192.168.0.21 (192.168.0.21)
Destination: 192.168.0.19 (192.168.0.19)
Stream Control Transmission Protocol, Src Port: 9000 (9000), Dst Port: 9000 (9000)
Source port: 9000
Destination port: 9000
Verification tag: 0x2b1e0377
Checksum: 0x2a2e5aff (not verified)
AUTH chunk
Chunk type: AUTH (15)
0... .... = Bit: Stop processing of the packet
.0.. .... = Bit: Do not report
Chunk flags: 0x00
Chunk length: 28
Shared key identifier: 0
HMAC identifier: SHA-1 (1)
HMAC: AA21B3835E1069FBFFA3589B1EB4C0AE47021F15
ASCONF chunk
Chunk type: ASCONF (193)
1... .... = Bit: Skip chunk and continue processing of the packet
.1.. .... = Bit: Do report
Chunk flags: 0x00
Chunk length: 44
Serial number: 0xfa0b220b
IPv4 address parameter (Address: 192.168.1.21)
Parameter type: IPv4 address (0x0005)
0... .... .... .... = Bit: Stop processing of chunk
.0.. .... .... .... = Bit: Do not report
Parameter length: 8
IP Version 4 address: 192.168.1.21 (192.168.1.21)
Delete IP address parameter (Address: 3ffe:501:ffff:101:5054:ff:fe70:993d, correlation ID: 0)
Parameter type: Delete IP address (0xc002)
1... .... .... .... = Bit: Skip parameter and continue processing of the chunk
.1.. .... .... .... = Bit: Do report
Parameter length: 28
Correlation_id: 0x00000000
IPv6 address parameter (Address: 3ffe:501:ffff:101:5054:ff:fe70:993d)
Parameter type: IPv6 address (0x0006)
0... .... .... .... = Bit: Stop processing of chunk
.0.. .... .... .... = Bit: Do not report
Parameter length: 20
IP Version 6 address: 3ffe:501:ffff:101:5054:ff:fe70:993d (3ffe:501:ffff:101:5054:ff:fe70:993d)
No. Time Source Destination Protocol Info
4 13.804193 192.168.0.19 192.168.0.21 SCTP AUTH ASCONF_ACK
Frame 4 (122 bytes on wire, 122 bytes captured)
Arrival Time: Apr 27, 2011 17:17:59.572985000
[Time delta from previous captured frame: 0.000088000 seconds]
[Time delta from previous displayed frame: 0.000088000 seconds]
[Time since reference or first frame: 13.804193000 seconds]
Frame Number: 4
Frame Length: 122 bytes
Capture Length: 122 bytes
[Frame is marked: False]
[Protocols in frame: eth:ip:sctp]
Ethernet II, Src: RealtekU_21:3c:7c (52:54:00:21:3c:7c), Dst: RealtekU_1a:f0:5c (52:54:00:1a:f0:5c)
Destination: RealtekU_1a:f0:5c (52:54:00:1a:f0:5c)
Address: RealtekU_1a:f0:5c (52:54:00:1a:f0:5c)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
Source: RealtekU_21:3c:7c (52:54:00:21:3c:7c)
Address: RealtekU_21:3c:7c (52:54:00:21:3c:7c)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
Type: IP (0x0800)
Internet Protocol, Src: 192.168.0.19 (192.168.0.19), Dst: 192.168.0.21 (192.168.0.21)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x02 (DSCP 0x00: Default; ECN: 0x02)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..1. = ECN-Capable Transport (ECT): 1
.... ...0 = ECN-CE: 0
Total Length: 108
Identification: 0x0000 (0)
Flags: 0x02 (Don't Fragment)
0.. = Reserved bit: Not Set
.1. = Don't fragment: Set
..0 = More fragments: Not Set
Fragment offset: 0
Time to live: 64
Protocol: SCTP (0x84)
Header checksum: 0xb893 [correct]
[Good: True]
[Bad : False]
Source: 192.168.0.19 (192.168.0.19)
Destination: 192.168.0.21 (192.168.0.21)
Stream Control Transmission Protocol, Src Port: 9000 (9000), Dst Port: 9000 (9000)
Source port: 9000
Destination port: 9000
Verification tag: 0x1b2d2288
Checksum: 0x9b288dab (not verified)
AUTH chunk
Chunk type: AUTH (15)
0... .... = Bit: Stop processing of the packet
.0.. .... = Bit: Do not report
Chunk flags: 0x00
Chunk length: 28
Shared key identifier: 0
HMAC identifier: SHA-1 (1)
HMAC: DDB8D3766671957FABA3554DE588599C9624DCBB
ASCONF_ACK chunk
Chunk type: ASCONF_ACK (128)
1... .... = Bit: Skip chunk and continue processing of the packet
.0.. .... = Bit: Do not report
Chunk flags: 0x00
Chunk length: 48
Serial number: 0xfa0b220b
Error cause indication parameter
Parameter type: Error cause indication (0xc003)
1... .... .... .... = Bit: Skip parameter and continue processing of the chunk
.1.. .... .... .... = Bit: Do report
Parameter length: 40
Correlation_id: 0x00000000
Unresolvable address cause (Address: )
Cause code: Unresolvable address (0x0005)
Cause length: 32
Delete IP address parameter (Address: 3ffe:501:ffff:101:5054:ff:fe70:993d, correlation ID: 0)
Parameter type: Delete IP address (0xc002)
1... .... .... .... = Bit: Skip parameter and continue processing of the chunk
.1.. .... .... .... = Bit: Do report
Parameter length: 28
Correlation_id: 0x00000000
IPv6 address parameter (Address: 3ffe:501:ffff:101:5054:ff:fe70:993d)
Parameter type: IPv6 address (0x0006)
0... .... .... .... = Bit: Stop processing of chunk
.0.. .... .... .... = Bit: Do not report
Parameter length: 20
IP Version 6 address: 3ffe:501:ffff:101:5054:ff:fe70:993d (3ffe:501:ffff:101:5054:ff:fe70:993d)
Frame 5 (118 bytes on wire, 118 bytes captured)
Arrival Time: Apr 27, 2011 17:17:59.573941000
[Time delta from previous captured frame: 0.000956000 seconds]
[Time delta from previous displayed frame: 0.000956000 seconds]
[Time since reference or first frame: 13.805149000 seconds]
Frame Number: 5
Frame Length: 118 bytes
Capture Length: 118 bytes
[Frame is marked: False]
[Protocols in frame: eth:ip:sctp]
Ethernet II, Src: RealtekU_1a:f0:5c (52:54:00:1a:f0:5c), Dst: RealtekU_21:3c:7c (52:54:00:21:3c:7c)
Destination: RealtekU_21:3c:7c (52:54:00:21:3c:7c)
Address: RealtekU_21:3c:7c (52:54:00:21:3c:7c)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
Source: RealtekU_1a:f0:5c (52:54:00:1a:f0:5c)
Address: RealtekU_1a:f0:5c (52:54:00:1a:f0:5c)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
Type: IP (0x0800)
Internet Protocol, Src: 192.168.0.21 (192.168.0.21), Dst: 192.168.0.19 (192.168.0.19)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x02 (DSCP 0x00: Default; ECN: 0x02)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..1. = ECN-Capable Transport (ECT): 1
.... ...0 = ECN-CE: 0
Total Length: 104
Identification: 0x001f (31)
Flags: 0x02 (Don't Fragment)
0.. = Reserved bit: Not Set
.1. = Don't fragment: Set
..0 = More fragments: Not Set
Fragment offset: 0
Time to live: 64
Protocol: SCTP (0x84)
Header checksum: 0xb878 [correct]
[Good: True]
[Bad : False]
Source: 192.168.0.21 (192.168.0.21)
Destination: 192.168.0.19 (192.168.0.19)
Stream Control Transmission Protocol, Src Port: 9000 (9000), Dst Port: 9000 (9000)
Source port: 9000
Destination port: 9000
Verification tag: 0x2b1e0377
Checksum: 0x91cfddc0 (not verified)
AUTH chunk
Chunk type: AUTH (15)
0... .... = Bit: Stop processing of the packet
.0.. .... = Bit: Do not report
Chunk flags: 0x00
Chunk length: 28
Shared key identifier: 0
HMAC identifier: SHA-1 (1)
HMAC: 2293892E2642A2D0E8911A669761E86134A47BD0
ASCONF chunk
Chunk type: ASCONF (193)
1... .... = Bit: Skip chunk and continue processing of the packet
.1.. .... = Bit: Do report
Chunk flags: 0x00
Chunk length: 44
Serial number: 0xfa0b220c
IPv6 address parameter (Address: 3ffe:501:ffff:101:5054:ff:fe70:993d)
Parameter type: IPv6 address (0x0006)
0... .... .... .... = Bit: Stop processing of chunk
.0.. .... .... .... = Bit: Do not report
Parameter length: 20
IP Version 6 address: 3ffe:501:ffff:101:5054:ff:fe70:993d (3ffe:501:ffff:101:5054:ff:fe70:993d)
Delete IP address parameter (Address: 192.168.1.21, correlation ID: 0)
Parameter type: Delete IP address (0xc002)
1... .... .... .... = Bit: Skip parameter and continue processing of the chunk
.1.. .... .... .... = Bit: Do report
Parameter length: 16
Correlation_id: 0x00000000
IPv4 address parameter (Address: 192.168.1.21)
Parameter type: IPv4 address (0x0005)
0... .... .... .... = Bit: Stop processing of chunk
.0.. .... .... .... = Bit: Do not report
Parameter length: 8
IP Version 4 address: 192.168.1.21 (192.168.1.21)
No. Time Source Destination Protocol Info
6 13.805190 192.168.0.19 192.168.0.21 SCTP AUTH ASCONF_ACK
Frame 6 (82 bytes on wire, 82 bytes captured)
Arrival Time: Apr 27, 2011 17:17:59.573982000
[Time delta from previous captured frame: 0.000041000 seconds]
[Time delta from previous displayed frame: 0.000041000 seconds]
[Time since reference or first frame: 13.805190000 seconds]
Frame Number: 6
Frame Length: 82 bytes
Capture Length: 82 bytes
[Frame is marked: False]
[Protocols in frame: eth:ip:sctp]
Ethernet II, Src: RealtekU_21:3c:7c (52:54:00:21:3c:7c), Dst: RealtekU_1a:f0:5c (52:54:00:1a:f0:5c)
Destination: RealtekU_1a:f0:5c (52:54:00:1a:f0:5c)
Address: RealtekU_1a:f0:5c (52:54:00:1a:f0:5c)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
Source: RealtekU_21:3c:7c (52:54:00:21:3c:7c)
Address: RealtekU_21:3c:7c (52:54:00:21:3c:7c)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
Type: IP (0x0800)
Internet Protocol, Src: 192.168.0.19 (192.168.0.19), Dst: 192.168.0.21 (192.168.0.21)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x02 (DSCP 0x00: Default; ECN: 0x02)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..1. = ECN-Capable Transport (ECT): 1
.... ...0 = ECN-CE: 0
Total Length: 68
Identification: 0x0000 (0)
Flags: 0x02 (Don't Fragment)
0.. = Reserved bit: Not Set
.1. = Don't fragment: Set
..0 = More fragments: Not Set
Fragment offset: 0
Time to live: 64
Protocol: SCTP (0x84)
Header checksum: 0xb8bb [correct]
[Good: True]
[Bad : False]
Source: 192.168.0.19 (192.168.0.19)
Destination: 192.168.0.21 (192.168.0.21)
Stream Control Transmission Protocol, Src Port: 9000 (9000), Dst Port: 9000 (9000)
Source port: 9000
Destination port: 9000
Verification tag: 0x1b2d2288
Checksum: 0x0962e46c (not verified)
AUTH chunk
Chunk type: AUTH (15)
0... .... = Bit: Stop processing of the packet
.0.. .... = Bit: Do not report
Chunk flags: 0x00
Chunk length: 28
Shared key identifier: 0
HMAC identifier: SHA-1 (1)
HMAC: DBE65D3AB3FB77D29FE2870BBB9ECCE4DC6D5EB6
ASCONF_ACK chunk
Chunk type: ASCONF_ACK (128)
1... .... = Bit: Skip chunk and continue processing of the packet
.0.. .... = Bit: Do not report
Chunk flags: 0x00
Chunk length: 8
Serial number: 0xfa0b220c
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