K 10
svn:author
V 8
rmacklem
K 8
svn:date
V 27
2020-04-27T23:55:09.953669Z
K 7
svn:log
V 743
Fix sosend_generic() so that it can handle a list of ext_pgs mbufs.

Without this patch, sosend_generic() will try to use top->m_pkthdr.len,
assuming that the first mbuf has a pkthdr.
When a list of ext_pgs mbufs is passed in, the first mbuf is not a
pkthdr and cannot be post-r359919.  As such, the value of top->m_pkthdr.len
is bogus (0 for my testing).
This patch fixes sosend_generic() to handle this case, calculating the
total length via m_length() for this case.

There is currently nothing that hands a list of ext_pgs mbufs to
sosend_generic(), but the nfs-over-tls kernel RPC code in
projects/nfs-over-tls will do that and was used to test this patch.

Reviewed by:	gallatin
Differential Revision:	https://reviews.freebsd.org/D24568

END