CVS commit: [netbsd-8] src/sys

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Thu Mar  8 13:41:41 UTC 2018

Modified Files:
        src/sys/net [netbsd-8]: if_l2tp.c if_l2tp.h
        src/sys/netinet [netbsd-8]: in_l2tp.c
        src/sys/netinet6 [netbsd-8]: in6_l2tp.c

Log Message:
Pull up following revision(s) (requested by knakahara in ticket #614):
        sys/net/if_l2tp.c: revision 1.20
        sys/netinet6/in6_l2tp.c: revision 1.13
        sys/netinet6/in6_l2tp.c: revision 1.14
        sys/net/if_l2tp.h: revision 1.3
        sys/net/if_l2tp.c: revision 1.13
        sys/netinet/in_l2tp.c: revision 1.10
        sys/net/if_l2tp.c: revision 1.18
        sys/netinet/in_l2tp.c: revision 1.11
        sys/net/if_l2tp.c: revision 1.19
        sys/netinet/in_l2tp.c: revision 1.12

If if_attach() failed in the attach function, return. Add comments about if_initialize().
suggested by ozaki-r@n.o.

Fix null deref, m could be NULL if M_PREPEND fails.

style

Style, reduce the indentation level when possible, and add a missing NULL
check after M_PREPEND.

Several fixes in L2TP:
 * l2tp_input(): use m_copydata, and ensure there is enough space in the
   chain. Otherwise overflow.
 * l2tp_tcpmss_clamp(): ensure there is enough space in the chain.
 * in_l2tp_output(): don't check 'sc' against NULL, it can't be NULL.
 * in_l2tp_input(): no need to call m_pullup since we use m_copydata.
   Just check the space in the chain.
 * in_l2tp_input(): if there is a cookie, make sure the chain has enough
   space.
 * in6_l2tp_input(): same changes as in_l2tp_input().
Ok knakahara@

Use MH_ALIGN instead, ok knakahara@.


To generate a diff of this commit:
cvs rdiff -u -r1.11.2.4 -r1.11.2.5 src/sys/net/if_l2tp.c
cvs rdiff -u -r1.2 -r1.2.2.1 src/sys/net/if_l2tp.h
cvs rdiff -u -r1.2.8.3 -r1.2.8.4 src/sys/netinet/in_l2tp.c
cvs rdiff -u -r1.5.8.3 -r1.5.8.4 src/sys/netinet6/in6_l2tp.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.