https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=252263
Bug ID: 252263
Summary: [tcp] Should we reject packets with the nonmonotonic
timestamp?
Product: Base System
Version: 12.1-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
The following packetdrill shows different result of last read between Linux and
FreeBSD
```
0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
+0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
+0 fcntl(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0
+0 bind(3, ..., ...) = 0
+0 listen(3, 1) = 0
+0 < S 0:0(0) win 1000 <TS val 100 ecr 0,eol,eol>
+.5 > S. 0:0(0) ack 1 <...>
+.1 < . 1:1(0) ack 1 win 1000
+0.1 accept(3, ..., ...) = 4
+0 fcntl(4, F_SETFL, O_RDWR|O_NONBLOCK) = 0
+0 < . 1:1001(1000) ack 1 win 1000 <TS val 100 ecr 0,eol,eol>
+0.1 read(4, ..., 1000) = 1000
// Linux accept this packet, while FreeBSD reject.
// But if we set the TS val to 50, they both reject it.
+0 < . 1001:2001(1000) ack 1 win 1000 <TS val 99 ecr 0,eol,eol>
+0.1 read(4, ..., 1000) = 1000
```
--
You are receiving this mail because:
You are the assignee for the bug.
_______________________________________________
[email protected] mailing list
https://lists.freebsd.org/mailman/listinfo/freebsd-bugs
To unsubscribe, send any mail to "[email protected]"
