Sam Leffler 9967cafc49 Correct mbuf packet header propagation. Previously, packet headers ... were sometimes propagated using M_COPY_PKTHDR which actually did something between a "move" and a "copy" operation. This is replaced by M_MOVE_PKTHDR (which copies the pkthdr contents and "removes" it from the source mbuf) and m_dup_pkthdr which copies the packet header contents including any m_tag chain. This corrects numerous problems whereby mbuf tags could be lost during packet manipulations. These changes also introduce arguments to m_tag_copy and m_tag_copy_chain to specify if the tag copy work should potentially block. This introduces an incompatibility with openbsd which we may want to revisit. Note that move/dup of packet headers does not handle target mbufs that have a cluster bound to them. We may want to support this; for now we watch for it with an assert. Finally, M_COPYFLAGS was updated to include M_FIRSTFRAG|M_LASTFRAG. Supported by: Vernier Networks Reviewed by: Robert Watson <rwatson@FreeBSD.org>		2002-12-30 20:22:40 +00:00
..
if_en_pci.c	Remove __P.	2002-03-20 02:08:01 +00:00
midway.c	Correct mbuf packet header propagation. Previously, packet headers	2002-12-30 20:22:40 +00:00
midwayreg.h	newbusify the en atm driver.	2000-11-07 09:30:14 +00:00
midwayvar.h	Rename "struct device" to "struct midway_device" to avoid clashing	2002-09-28 21:59:59 +00:00