When using bpf(4) in immediate mode, and using kevent(2) to receive
notification of packet arrival, the usermode application isn't notified
until a second packet arrives.
This is because KNOTE() calls filt_bpfread() before bd_slen has been
updated with the newly arrived packet length, so it looks like there
is no data there.
Moving the bpf_wakeup() call for immediate mode to after bd_slen is set
fixes it.
From: wayne@epipe.com.au in pr 3175
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.
Bump the kernel rev up to 1.6V
Do a little mbuf rework while here. Change all uses of MGET*(*, M_WAIT, *)
to m_get*(M_WAIT, *). These are not performance critical and making them
call m_get saves considerable space. Add m_clget analogue of MCLGET and
make corresponding change for M_WAIT uses.
Modify netinet, gem, fxp, tulip, nfs to support MBUFTRACE.
Begin to change netstat to use sysctl.
kqueue provides a stateful and efficient event notification framework
currently supported events include socket, file, directory, fifo,
pipe, tty and device changes, and monitoring of processes and signals
kqueue is supported by all writable filesystems in NetBSD tree
(with exception of Coda) and all device drivers supporting poll(2)
based on work done by Jonathan Lemon for FreeBSD
initial NetBSD port done by Luke Mewburn and Jason Thorpe
bpf_mtap() gets called with not-well-initialized mbuf, so we need to go through
it without touching m->m_pkthdr.len and such. it's part of our bpf_mtap() API
(at least today).
This merge changes the device switch tables from static array to
dynamically generated by config(8).
- All device switches is defined as a constant structure in device drivers.
- The new grammer ``device-major'' is introduced to ``files''.
device-major <prefix> char <num> [block <num>] [<rules>]
- All device major numbers must be listed up in port dependent majors.<arch>
by using this grammer.
- Added the new naming convention.
The name of the device switch must be <prefix>_[bc]devsw for auto-generation
of device switch tables.
- The backward compatibility of loading block/character device
switch by LKM framework is broken. This is necessary to convert
from block/character device major to device name in runtime and vice versa.
- The restriction to assign device major by LKM is completely removed.
We don't need to reserve LKM entries for dynamic loading of device switch.
- In compile time, device major numbers list is packed into the kernel and
the LKM framework will refer it to assign device major number dynamically.
type for the driver, which will be used for 802.11 drivers.
Also add 2 APIs to get a list of available DLTs and use one for them.
BIOCGDLTLIST (struct bpf_dltlist)
BIOCSDLT (u_int)
protocols, and lacking any timeouts, but it basically works, doing four-way
handshakes in both directions and incoming Machine Peek operations.
Oh, and Econet is Acorn's ancient, proprietary 500kbit/s networking
technology.
and bpf_change_type() to take just a pointer to the ifnet, rather than
a pointer to the ifnet and a pointer to a member of the ifnet (the bpf
pointer).
We'll let this ride on the Dec 12 1.5N version bump.
fix last two fixes one more time, this time dealing with ugly
prototype issues, including the fact that the bcopy returns nothing,
but memcpy returns a void *. Never mind that we don't use it...
This was semi-nontrivial, since a function pointer to bcopy gets used
in this file.
Note #1: The catchpacket routine, which takes a function pointer to
bpf_mcpy or memcpy, should probably be converted to take a
flag that just says which is used, so memcpy can be inlined.
Note #2: The code is heavily #ifdef'ed to run on older operating
systems. We probably want to clean that cruft out, unless
someone is planning a new release of the code at LBL (doubtful.)
the "header already complete" flag. This allows BPF writers to spoof
layer 2 source addresses (providing the layer 2 in use supports it) in
applications where this is necessary. From Greg Smith <greg@nas.nasa.gov>.
- whitespace
- add rcsid; our sccsid is newer than the one on 1.2a1.
- change prototype to add mtu
- change size_t to u_int for consistency.
- add alignment stuff in bpf_movein
- add more consistency checks bpf_movein
- use one uiomove and then bcopy the data in bpf_movein
- update the comment for the panic when ifpromisc fails.
- separate the case when we have non blocking I/O and
no data and return EWOULDBLOCK
- check for other errors and return them
- pass the mtu to bpf_movein
- Add the BPF_KERN_FILTER junk, just so that we keep up with the code
- remove BIOCSRSIG, BIOCGRSIG; SIGIO does this well.
- don't add the SIOCGIFADDR stuff (it is bogus)
- Check for malloc return for consistency.
- comment should say poll
- change formatting to match the current code.
- save and restore the pcount and flags in case we fail to set the
interface into promiscuous mode.
- fix spelling typo.
Some of the stuff (e.g., rarpd, bootpd, dhcpd etc., libsa) still will
only support Ethernet. Tcpdump itself should be ok, but libpcap needs
lot of work.
For the detailed change history, look at the commit log entries for
the is-newarp branch.
