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>
within the HARP atm stack and the hea and hfa device drivers, but since
all of these systems were changed to use UMA zones, there is no use for
the api any longer.
the necesary uma_zcreate() and uma_zdestroy calls into module loading
handler and the device attach handling.
- Change the related HARP netatm code to use UMA zone functions when
dealing with the zones that were formerly the ATM interface (hea, hfa)
storage pools.
- Have atm_physif_freenifs() now get passed an uma_zone_t so that we can
properly free the allocated NIF's back to their zone.
This should be the last commit to remove any code that makes use of the
netatm storage pool api. I will be removing the api code within the near
future.
Reviewed by: mdodd
be a few bits left to clean from the HARP code in terms of what is using
the storage pools; once that's done, the memory management code can be
removed entirely.
This commit effectively changes the use of dynamic memory routines from
atm_allocate, atm_free, atm_release_pool to uma_zcreate, uma_zalloc,
uma_zfree, uma_zdestroy.
o Add a mutex (sb_mtx) to struct sockbuf. This protects the data in a
socket buffer. The mutex in the receive buffer also protects the data
in struct socket.
o Determine the lock strategy for each members in struct socket.
o Lock down the following members:
- so_count
- so_options
- so_linger
- so_state
o Remove *_locked() socket APIs. Make the following socket APIs
touching the members above now require a locked socket:
- sodisconnect()
- soisconnected()
- soisconnecting()
- soisdisconnected()
- soisdisconnecting()
- sofree()
- soref()
- sorele()
- sorwakeup()
- sotryfree()
- sowakeup()
- sowwakeup()
Reviewed by: alfred
Atm_connection items.
- Replaced the Atm_connvc storage pool with an uma_zone of Atm_connvc
items.
- Created void atm_cm_init(void *) and added it to the netatm init code.
I'm thinking that there will definetly be more ``subsystem'' init
functions to be added so I'll probably change these calls to be a for
loop through init routines (or something).
Requested by: bde
Since locking sigio_lock is usually followed by calling pgsigio(),
move the declaration of sigio_lock and the definitions of SIGIO_*() to
sys/signalvar.h.
While I am here, sort include files alphabetically, where possible.
calls associated with the pool and the objects allocated out from the
pool.
- Insert atm_attributes_zone which is a uma_zone that is used just as the
atm_attributes_pool was (including the max objects value). Also, used
the appropriate zalloc and zfree's where necesary.
