Bug 146628
| Summary: | [tcp] [patch] TCP does not clear DF when MTU is below a threshold | ||||||||
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| Product: | Base System | Reporter: | mjl | ||||||
| Component: | kern | Assignee: | Andre Oppermann <andre> | ||||||
| Status: | Closed FIXED | ||||||||
| Severity: | Affects Only Me | ||||||||
| Priority: | Normal | ||||||||
| Version: | 8.0-STABLE | ||||||||
| Hardware: | Any | ||||||||
| OS: | Any | ||||||||
| Attachments: |
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Description
mjl
2010-05-16 11:00:14 UTC
Responsible Changed From-To: freebsd-bugs->freebsd-net Over to maintainer(s). Responsible Changed From-To: freebsd-net->andre Take over. Matthew,
Thank you for your bug report and the proposed patch. I have analysed
the problem further and there is indeed a bug in the way the suggested
MTU from the ICMP fragmentation needed message is handled.
The attached, different, patch tries to fix the issue in two ways:
- the icmp message suggested value is no longer ignored if it goes below
the configured minmss value. Instead minmss plus tcpiphdr is used as
floor and for the new MTU. The use of the default mss is removed.
- the DF flag is turned not set whenever the mss is equal or lower to
minmss. This allows even smaller MTU's to be used with fragmentation.
Please test again with this patch applied.
--
Andre
Index: tcp_subr.c
===================================================================
--- tcp_subr.c (revision 211211)
+++ tcp_subr.c (working copy)
@@ -1339,11 +1325,9 @@
if (!mtu)
mtu = ip_next_mtu(ip->ip_len,
1);
- if (mtu < max(296, V_tcp_minmss
- + sizeof(struct tcpiphdr)))
- mtu = 0;
- if (!mtu)
- mtu = V_tcp_mssdflt
+ if (mtu < V_tcp_minmss
+ + sizeof(struct tcpiphdr))
+ mtu = V_tcp_minmss
+ sizeof(struct tcpiphdr);
/*
* Only cache the the MTU if it
Index: tcp_output.c
===================================================================
--- tcp_output.c (revision 211211)
+++ tcp_output.c (working copy)
@@ -1183,8 +1221,10 @@
* This might not be the best thing to do according to RFC3390
* Section 2. However the tcp hostcache migitates the problem
* so it affects only the first tcp connection with a host.
+ *
+ * NB: Don't set DF on small MTU/MSS to have a safe fallback.
*/
- if (V_path_mtu_discovery)
+ if (V_path_mtu_discovery && tp->t_maxopd >= V_tcp_minmss)
ip->ip_off |= IP_DF;
error = ip_output(m, tp->t_inpcb->inp_options, NULL,
I tried your patch, but on my FreeBSD 8.1 system (I don't have a -current system). It will reduce its packet size to 256 now, but does not clear the DF bit, and if I try something smaller than 256 it does not reduce and does not clear the DF bit. Sorry if the following detail is not useful because I used 8.1. tbit from 192.168.1.11 to 192.168.1.24 server-mss 1460, result: pmtud-success [ 0.112] TX SYN 44 seq = 0:0 ac69 [ 0.112] RX SYN/ACK 44 seq = 0:1 000c [ 0.167] TX 40 seq = 1:1 ac6a [ 0.205] TX 225 seq = 1:1(185) ac6b DF [ 0.257] RX 372 seq = 1:186(332) 000d DF [ 0.257] TX 40 seq = 186:333 ac6c [ 0.257] RX 1500 seq = 333:186(1460) 000e DF [ 0.299] TX PTB 56 mtu = 576 [ 0.299] RX 576 seq = 333:186(536) 000f DF [ 0.299] RX 576 seq = 869:186(536) 0010 DF [ 0.299] RX 576 seq = 1405:186(536) 0011 DF [ 0.355] TX 40 seq = 186:869 ac6e [ 0.356] RX 576 seq = 1941:186(536) 0012 DF [ 0.356] RX 576 seq = 2477:186(536) 0013 DF [ 0.399] TX FIN 40 seq = 186:1405 ac6f [ 0.399] RX 576 seq = 3013:187(536) 0014 DF [ 0.399] RX 576 seq = 3549:187(536) 0015 DF [ 0.454] TX FIN 40 seq = 186:1941 ac70 [ 0.454] RX 576 seq = 4085:187(536) 0016 DF [ 0.454] RX FIN 45 seq = 4621:187(5) 0017 DF [ 0.498] TX FIN 40 seq = 186:2477 ac71 [ 0.498] RX FIN 40 seq = 4626:187 0018 [ 0.558] TX FIN 40 seq = 186:3013 ac72 [ 0.558] RX FIN 40 seq = 4626:187 0019 [ 0.610] TX 40 seq = 187:3549 ac73 [ 0.654] TX 40 seq = 187:4085 ac74 [ 0.706] TX 40 seq = 187:4621 ac75 [ 0.761] TX 40 seq = 187:4627 ac76 tbit from 192.168.1.11 to 192.168.1.24 server-mss 536, result: pmtud-success [ 0.063] TX SYN 44 seq = 0:0 e5da [ 0.063] RX SYN/ACK 44 seq = 0:1 001a [ 0.106] TX 40 seq = 1:1 e5db [ 0.149] TX 225 seq = 1:1(185) e5dc DF [ 0.150] RX 576 seq = 1:186(536) 001b DF [ 0.206] TX PTB 56 mtu = 400 [ 0.206] RX 400 seq = 1:186(360) 001c DF [ 0.206] RX 217 seq = 361:186(177) 001d DF [ 0.250] TX 40 seq = 186:361 e5de [ 0.250] RX 400 seq = 538:186(360) 001e DF [ 0.250] RX 400 seq = 898:186(360) 001f DF [ 0.300] TX FIN 40 seq = 186:538 e5df [ 0.301] RX 394 seq = 1258:187(354) 0020 DF [ 0.351] TX FIN 40 seq = 186:898 e5e0 [ 0.351] RX 400 seq = 1612:187(360) 0021 DF [ 0.351] RX 400 seq = 1972:187(360) 0022 DF [ 0.410] TX FIN 40 seq = 186:1258 e5e1 [ 0.411] RX 400 seq = 2332:187(360) 0023 DF [ 0.411] RX 400 seq = 2692:187(360) 0024 DF [ 0.450] TX 40 seq = 187:1612 e5e2 [ 0.451] RX 400 seq = 3052:187(360) 0025 DF [ 0.506] TX 40 seq = 187:1972 e5e3 [ 0.506] RX 400 seq = 3412:187(360) 0026 DF [ 0.506] RX 400 seq = 3772:187(360) 0027 DF [ 0.568] TX 40 seq = 187:2332 e5e4 [ 0.568] RX 400 seq = 4132:187(360) 0028 DF [ 0.568] RX FIN 174 seq = 4492:187(134) 0029 DF [ 0.599] TX 40 seq = 187:2692 e5e5 [ 0.650] TX 40 seq = 187:3052 e5e6 [ 0.701] TX 40 seq = 187:3412 e5e7 [ 0.757] TX 40 seq = 187:3772 e5e8 [ 0.805] TX 40 seq = 187:4132 e5e9 [ 0.853] TX 40 seq = 187:4492 e5ea [ 0.906] TX 40 seq = 187:4627 e5eb tbit from 192.168.1.11 to 192.168.1.24 server-mss 360, result: pmtud-success [ 0.044] TX SYN 44 seq = 0:0 be68 [ 0.044] RX SYN/ACK 44 seq = 0:1 002a [ 0.093] TX 40 seq = 1:1 be69 [ 0.144] TX 225 seq = 1:1(185) be6a DF [ 0.145] RX 400 seq = 1:186(360) 002b DF [ 0.194] TX PTB 56 mtu = 256 [ 0.195] RX 256 seq = 1:186(216) 002c DF [ 0.195] RX 185 seq = 217:186(145) 002d DF [ 0.244] TX 40 seq = 186:217 be6c [ 0.244] RX 256 seq = 362:186(216) 002e DF [ 0.244] RX 256 seq = 578:186(216) 002f DF [ 0.296] TX FIN 40 seq = 186:362 be6d [ 0.296] RX 256 seq = 794:187(216) 0030 DF [ 0.345] TX FIN 40 seq = 186:578 be6e [ 0.346] RX 256 seq = 1010:187(216) 0031 DF [ 0.346] RX 256 seq = 1226:187(216) 0032 DF [ 0.400] TX FIN 40 seq = 186:794 be6f [ 0.401] RX 256 seq = 1442:187(216) 0033 DF [ 0.401] RX 256 seq = 1658:187(216) 0034 DF [ 0.455] TX 40 seq = 187:1010 be70 [ 0.455] RX 256 seq = 1874:187(216) 0035 DF [ 0.455] RX 256 seq = 2090:187(216) 0036 DF [ 0.501] TX 40 seq = 187:1226 be71 [ 0.501] RX 256 seq = 2306:187(216) 0037 DF [ 0.501] RX 256 seq = 2522:187(216) 0038 DF [ 0.549] TX 40 seq = 187:1442 be72 [ 0.549] RX 256 seq = 2738:187(216) 0039 DF [ 0.550] RX 256 seq = 2954:187(216) 003a DF [ 0.604] TX 40 seq = 187:1658 be73 [ 0.604] RX 256 seq = 3170:187(216) 003b DF [ 0.604] RX 256 seq = 3386:187(216) 003c DF [ 0.645] TX 40 seq = 187:1874 be74 [ 0.645] RX 256 seq = 3602:187(216) 003d DF [ 0.645] RX 256 seq = 3818:187(216) 003e DF [ 0.698] TX 40 seq = 187:2090 be75 [ 0.698] RX 256 seq = 4034:187(216) 003f DF [ 0.698] RX 256 seq = 4250:187(216) 0040 DF [ 0.749] TX 40 seq = 187:2306 be76 [ 0.749] RX FIN 200 seq = 4466:187(160) 0041 DF [ 0.804] TX 40 seq = 187:2522 be77 [ 0.855] TX 40 seq = 187:2738 be78 [ 0.895] TX 40 seq = 187:2954 be79 [ 0.950] TX 40 seq = 187:3170 be7a [ 0.994] TX 40 seq = 187:3386 be7b [ 1.046] TX 40 seq = 187:3602 be7c [ 1.093] TX 40 seq = 187:3818 be7d [ 1.145] TX 40 seq = 187:4034 be7e [ 1.195] TX 40 seq = 187:4250 be7f [ 1.255] TX 40 seq = 187:4466 be80 [ 1.293] TX 40 seq = 187:4627 be81 tbit from 192.168.1.11 to 192.168.1.24 server-mss 216, result: pmtud-fail [ 0.043] TX SYN 44 seq = 0:0 53ef [ 0.043] RX SYN/ACK 44 seq = 0:1 0042 [ 0.090] TX 40 seq = 1:1 53f0 [ 0.154] TX 225 seq = 1:1(185) 53f1 DF [ 0.154] RX 256 seq = 1:186(216) 0043 DF [ 0.189] TX PTB 56 mtu = 255 [ 0.189] RX 256 seq = 1:186(216) 0044 DF [ 0.243] TX PTB 56 mtu = 255 [ 0.244] RX 256 seq = 1:186(216) 0045 DF [ 0.287] TX PTB 56 mtu = 255 [ 0.288] RX 256 seq = 1:186(216) 0046 DF [ 0.349] TX PTB 56 mtu = 255 [ 0.350] RX 256 seq = 1:186(216) 0047 DF On 14.08.2010 01:45, Matthew Luckie wrote:
> I tried your patch, but on my FreeBSD 8.1 system (I don't have a
> -current system). It will reduce its packet size to 256 now, but does
> not clear the DF bit, and if I try something smaller than 256 it does
> not reduce and does not clear the DF bit. Sorry if the following detail
> is not useful because I used 8.1.
Thanks for testing. Using 8.1 is fine as there is no difference in
this part between -CURRENT and 8.1.
Please try the attached patch with a small difference. It will clear
the DF bit in any case when the minmss floor is reached.
--
Andre
On 08/15/10 20:11, Andre Oppermann wrote: > On 14.08.2010 01:45, Matthew Luckie wrote: >> I tried your patch, but on my FreeBSD 8.1 system (I don't have a >> -current system). It will reduce its packet size to 256 now, but does >> not clear the DF bit, and if I try something smaller than 256 it does >> not reduce and does not clear the DF bit. Sorry if the following detail >> is not useful because I used 8.1. > > Thanks for testing. Using 8.1 is fine as there is no difference in > this part between -CURRENT and 8.1. > > Please try the attached patch with a small difference. It will clear > the DF bit in any case when the minmss floor is reached. That patch works for me. It reduces to 256, leaving the DF bit set for MTU 256, but does not reduce further and will clear DF below 256. Odd, the only difference between the two patches is if (V_path_mtu_discovery && tp->t_maxopd >= V_tcp_minmss) became: if (V_path_mtu_discovery && tp->t_maxopd > V_tcp_minmss) Anyway, looks like its fixed now. I like your patch better than mine. Matthew On 15.08.2010 11:03, Matthew Luckie wrote: > On 08/15/10 20:11, Andre Oppermann wrote: >> On 14.08.2010 01:45, Matthew Luckie wrote: >>> I tried your patch, but on my FreeBSD 8.1 system (I don't have a >>> -current system). It will reduce its packet size to 256 now, but does >>> not clear the DF bit, and if I try something smaller than 256 it does >>> not reduce and does not clear the DF bit. Sorry if the following detail >>> is not useful because I used 8.1. >> >> Thanks for testing. Using 8.1 is fine as there is no difference in >> this part between -CURRENT and 8.1. >> >> Please try the attached patch with a small difference. It will clear >> the DF bit in any case when the minmss floor is reached. > > That patch works for me. It reduces to 256, leaving the DF bit set for > MTU 256, but does not reduce further and will clear DF below 256. Good. Could you send the test output of your tool again showing that is working fine now? > Odd, the only difference between the two patches is > > if (V_path_mtu_discovery && tp->t_maxopd >= V_tcp_minmss) > > became: > > if (V_path_mtu_discovery && tp->t_maxopd > V_tcp_minmss) It was a logic error I made. Since t_maxopd could never be lower than minmss the >= test was always true and the DF flag was set always. > Anyway, looks like its fixed now. I like your patch better than mine. Thanks. I'm going to commit the fix. -- Andre State Changed From-To: open->analyzed Caused found and fix provided, awaiting final confirmation and comitting of patch. Author: andre Date: Sun Aug 15 13:25:18 2010 New Revision: 211333 URL: http://svn.freebsd.org/changeset/base/211333 Log: Fix the interaction between 'ICMP fragmentation needed' MTU updates, path MTU discovery and the tcp_minmss limiter for very small MTU's. When the MTU suggested by the gateway via ICMP, or if there isn't any the next smaller step from ip_next_mtu(), is lower than the floor enforced by net.inet.tcp.minmss (default 216) the value is ignored and the default MSS (512) is used instead. However the DF flag in the IP header is still set in tcp_output() preventing fragmentation by the gateway. Fix this by using tcp_minmss as the MSS and clear the DF flag if the suggested MTU is too low. This turns off path MTU dissovery for the remainder of the session and allows fragmentation to be done by the gateway. Only MTU's smaller than 256 are affected. The smallest official MTU specified is for AX.25 packet radio at 256 octets. PR: kern/146628 Tested by: Matthew Luckie <mjl-at-luckie org nz> MFC after: 1 week Modified: head/sys/netinet/tcp_output.c head/sys/netinet/tcp_subr.c Modified: head/sys/netinet/tcp_output.c ============================================================================== --- head/sys/netinet/tcp_output.c Sun Aug 15 13:07:08 2010 (r211332) +++ head/sys/netinet/tcp_output.c Sun Aug 15 13:25:18 2010 (r211333) @@ -1186,8 +1186,10 @@ timer: * This might not be the best thing to do according to RFC3390 * Section 2. However the tcp hostcache migitates the problem * so it affects only the first tcp connection with a host. + * + * NB: Don't set DF on small MTU/MSS to have a safe fallback. */ - if (V_path_mtu_discovery) + if (V_path_mtu_discovery && tp->t_maxopd > V_tcp_minmss) ip->ip_off |= IP_DF; error = ip_output(m, tp->t_inpcb->inp_options, NULL, Modified: head/sys/netinet/tcp_subr.c ============================================================================== --- head/sys/netinet/tcp_subr.c Sun Aug 15 13:07:08 2010 (r211332) +++ head/sys/netinet/tcp_subr.c Sun Aug 15 13:25:18 2010 (r211333) @@ -1339,11 +1339,9 @@ tcp_ctlinput(int cmd, struct sockaddr *s if (!mtu) mtu = ip_next_mtu(ip->ip_len, 1); - if (mtu < max(296, V_tcp_minmss - + sizeof(struct tcpiphdr))) - mtu = 0; - if (!mtu) - mtu = V_tcp_mssdflt + if (mtu < V_tcp_minmss + + sizeof(struct tcpiphdr)) + mtu = V_tcp_minmss + sizeof(struct tcpiphdr); /* * Only cache the the MTU if it _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscribe@freebsd.org" State Changed From-To: analyzed->patched >>> Please try the attached patch with a small difference. It will clear >>> the DF bit in any case when the minmss floor is reached. >> >> That patch works for me. It reduces to 256, leaving the DF bit set for >> MTU 256, but does not reduce further and will clear DF below 256. > > Good. Could you send the test output of your tool again showing that > is working fine now? The first two were run back to back. The third was run after I rebooted the patched machine. tbit from 192.168.1.11 to 192.168.1.24 server-mss 1460, result: pmtud-success [ 0.100] TX SYN 44 seq = 0:0 9c7e [ 0.101] RX SYN/ACK 44 seq = 0:1 000c [ 0.149] TX 40 seq = 1:1 9c7f [ 0.213] TX 225 seq = 1:1(185) 9c80 DF [ 0.250] RX 372 seq = 1:186(332) 000d DF [ 0.251] TX 40 seq = 186:333 9c81 [ 0.254] RX 1500 seq = 333:186(1460) 000e DF [ 0.299] TX PTB 56 mtu = 576 [ 0.299] RX 576 seq = 333:186(536) 000f DF [ 0.299] RX 576 seq = 869:186(536) 0010 DF [ 0.299] RX 576 seq = 1405:186(536) 0011 DF [ 0.349] TX 40 seq = 186:869 9c83 [ 0.350] RX 576 seq = 1941:186(536) 0012 DF [ 0.350] RX 576 seq = 2477:186(536) 0013 DF [ 0.398] TX FIN 40 seq = 186:1405 9c84 [ 0.399] RX 576 seq = 3013:187(536) 0014 DF [ 0.399] RX 576 seq = 3549:187(536) 0015 DF [ 0.449] TX FIN 40 seq = 186:1941 9c85 [ 0.449] RX 576 seq = 4085:187(536) 0016 DF [ 0.450] RX FIN 45 seq = 4621:187(5) 0017 DF [ 0.503] TX FIN 40 seq = 186:2477 9c86 [ 0.504] RX FIN 40 seq = 4626:187 0018 [ 0.554] TX FIN 40 seq = 186:3013 9c87 [ 0.555] RX FIN 40 seq = 4626:187 0019 [ 0.598] TX 40 seq = 187:3549 9c88 [ 0.659] TX 40 seq = 187:4085 9c89 [ 0.710] TX 40 seq = 187:4621 9c8a [ 0.763] TX 40 seq = 187:4627 9c8b tbit from 192.168.1.11 to 192.168.1.24 server-mss 536, result: pmtud-cleardf [ 0.056] TX SYN 44 seq = 0:0 f696 [ 0.056] RX SYN/ACK 44 seq = 0:1 001a [ 0.106] TX 40 seq = 1:1 f697 [ 0.149] TX 225 seq = 1:1(185) f698 DF [ 0.150] RX 576 seq = 1:186(536) 001b DF [ 0.210] TX PTB 56 mtu = 256 [ 0.211] RX 256 seq = 1:186(216) 001c [ 0.211] RX 256 seq = 217:186(216) 001d [ 0.211] RX 145 seq = 433:186(105) 001e [ 0.249] TX 40 seq = 186:217 f69a [ 0.250] RX 256 seq = 538:186(216) 001f [ 0.250] RX 256 seq = 754:186(216) 0020 [ 0.298] TX FIN 40 seq = 186:433 f69b [ 0.299] RX 256 seq = 970:187(216) 0021 [ 0.299] RX 256 seq = 1186:187(216) 0022 [ 0.366] TX FIN 40 seq = 186:538 f69c [ 0.367] RX 250 seq = 1402:187(210) 0023 [ 0.398] TX FIN 40 seq = 186:754 f69d [ 0.399] RX 256 seq = 1612:187(216) 0024 [ 0.399] RX 256 seq = 1828:187(216) 0025 [ 0.451] TX FIN 40 seq = 186:970 f69e [ 0.451] RX 256 seq = 2044:187(216) 0026 [ 0.451] RX 256 seq = 2260:187(216) 0027 [ 0.505] TX 40 seq = 187:1186 f69f [ 0.506] RX 256 seq = 2476:187(216) 0028 [ 0.506] RX 256 seq = 2692:187(216) 0029 [ 0.554] TX 40 seq = 187:1402 f6a0 [ 0.555] RX 256 seq = 2908:187(216) 002a [ 0.555] RX 256 seq = 3124:187(216) 002b [ 0.599] TX 40 seq = 187:1612 f6a1 [ 0.600] RX 256 seq = 3340:187(216) 002c [ 0.648] TX 40 seq = 187:1828 f6a2 [ 0.649] RX 256 seq = 3556:187(216) 002d [ 0.649] RX 256 seq = 3772:187(216) 002e [ 0.705] TX 40 seq = 187:2044 f6a3 [ 0.706] RX 256 seq = 3988:187(216) 002f [ 0.706] RX 256 seq = 4204:187(216) 0030 [ 0.750] TX 40 seq = 187:2260 f6a4 [ 0.751] RX FIN 246 seq = 4420:187(206) 0031 [ 0.811] TX 40 seq = 187:2476 f6a5 [ 0.854] TX 40 seq = 187:2692 f6a6 [ 0.899] TX 40 seq = 187:2908 f6a7 [ 0.955] TX 40 seq = 187:3124 f6a8 [ 1.003] TX 40 seq = 187:3340 f6a9 [ 1.048] TX 40 seq = 187:3556 f6aa [ 1.100] TX 40 seq = 187:3772 f6ab [ 1.155] TX 40 seq = 187:3988 f6ac [ 1.199] TX 40 seq = 187:4204 f6ad [ 1.249] TX 40 seq = 187:4420 f6ae [ 1.310] TX 40 seq = 187:4627 f6af tbit from 192.168.1.11 to 192.168.1.24 server-mss 1460, result: pmtud-cleardf [ 0.104] TX SYN 44 seq = 0:0 1e05 [ 0.105] RX SYN/ACK 44 seq = 0:1 000c [ 0.152] TX 40 seq = 1:1 1e06 [ 0.199] TX 225 seq = 1:1(185) 1e07 DF [ 0.230] RX 372 seq = 1:186(332) 000d DF [ 0.251] TX PTB 56 mtu = 255 [ 0.252] RX 256 seq = 1:186(216) 000e [ 0.252] RX 256 seq = 217:186(216) 000f [ 0.252] RX 256 seq = 433:186(216) 0010 [ 0.252] RX 256 seq = 649:186(216) 0011 [ 0.252] RX 256 seq = 865:186(216) 0012 [ 0.252] RX 256 seq = 1081:186(216) 0013 [ 0.300] TX 40 seq = 186:217 1e09 [ 0.301] RX 256 seq = 1297:186(216) 0014 [ 0.301] RX 256 seq = 1513:186(216) 0015 [ 0.347] TX FIN 40 seq = 186:433 1e0a [ 0.348] RX 256 seq = 1729:187(216) 0016 [ 0.348] RX 256 seq = 1945:187(216) 0017 [ 0.400] TX FIN 40 seq = 186:649 1e0b [ 0.401] RX 256 seq = 2161:187(216) 0018 [ 0.401] RX 256 seq = 2377:187(216) 0019 [ 0.449] TX FIN 40 seq = 186:865 1e0c [ 0.449] RX 256 seq = 2593:187(216) 001a [ 0.449] RX 256 seq = 2809:187(216) 001b [ 0.498] TX FIN 40 seq = 186:1081 1e0d [ 0.498] RX 256 seq = 3025:187(216) 001c [ 0.498] RX 256 seq = 3241:187(216) 001d [ 0.549] TX FIN 40 seq = 186:1297 1e0e [ 0.550] RX 256 seq = 3457:187(216) 001e [ 0.550] RX 256 seq = 3673:187(216) 001f [ 0.597] TX FIN 40 seq = 186:1513 1e0f [ 0.598] RX 256 seq = 3889:187(216) 0020 [ 0.598] RX 256 seq = 4105:187(216) 0021 [ 0.648] TX FIN 40 seq = 186:1729 1e10 [ 0.650] RX 256 seq = 4321:187(216) 0022 [ 0.650] RX FIN 129 seq = 4537:187(89) 0023 [ 0.699] TX 40 seq = 187:1945 1e11 [ 0.749] TX 40 seq = 187:2161 1e12 [ 0.804] TX 40 seq = 187:2377 1e13 [ 0.848] TX 40 seq = 187:2593 1e14 [ 0.898] TX 40 seq = 187:2809 1e15 [ 0.948] TX 40 seq = 187:3025 1e16 [ 0.998] TX 40 seq = 187:3241 1e17 [ 1.048] TX 40 seq = 187:3457 1e18 [ 1.099] TX 40 seq = 187:3673 1e19 [ 1.151] TX 40 seq = 187:3889 1e1a [ 1.198] TX 40 seq = 187:4105 1e1b [ 1.249] TX 40 seq = 187:4321 1e1c [ 1.298] TX 40 seq = 187:4537 1e1d [ 1.355] TX 40 seq = 187:4627 1e1e State Changed From-To: patched->closed All MFC's done. |
