Module Name: src
Committed By: maxv
Date: Fri Aug 31 14:16:07 UTC 2018
Modified Files:
src/sys/net/npf: npf_ext_normalize.c npf_impl.h npf_inet.c
Log Message:
Introduce npf_set_mss(). When the MSS is not 16bit-aligned, it sets:
0 8 16 24 32
+------+-----------+-----------+------+
| data | MSS (low) | MSS (hig) | data |
+------+-----------+-----------+------+
^ ^
old[0] old[1]
And sets new[0,1] accordingly with the new value. The MSS-clamping code
then adjusts twice the checksum on a 16bit boundary:
from old[0] to new[0]
from old[1] to new[1]
Fixes PR/53479, opened by myself. Tested with wireshark and kASan.
To generate a diff of this commit:
cvs rdiff -u -r1.7 -r1.8 src/sys/net/npf/npf_ext_normalize.c
cvs rdiff -u -r1.70 -r1.71 src/sys/net/npf/npf_impl.h
cvs rdiff -u -r1.50 -r1.51 src/sys/net/npf/npf_inet.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
