hardware drivers. Unlike pseudo-device drivers, which just attach
to the cloning framework and wait for "ifconfig create", h/w drivers
create interfaces for installed cards as soon as loaded. The issue
of devd(8) involuntarily reloading modules should be dealt with in a
different way.
new interface. In other cases loading the module is unwanted and
can lead to ill side effects. One such effect found is as follows:
"kldunload if_foo" tells the module to kill all its interfaces,
which results in messages sent to devd; the module unloads. Then
devd starts processing the messages, which ends up in a etc script
running ifconfig fooX, which reloads the module.
'ifconfig em0 tso' and 'ifconfig em0 -tso'. TSO for IPv4 and IPv6 is always
enabled or disabled together. The driver may enable only one if it doesn't
support both.
Document 'tso' and '-tso' in the ifconfig(8) man pages.
Sponsored by: TCP/IP Optimization Fundraise 2005
mechanism
o change vlan cloning to use callback and pass all vlan parameters
on create using the new SIOCREATE2 ioctl
o update vlan set logic to match existing practice
Presently, ifconfig callbacks are used for L2 configuration, media
and vlan, so actions associated with address assignment, like sending
out a gratuitous ARP, should go when L2 is running already.
This also should fix the problem with setting up vlan interfaces
from rc.conf, when both IP and vlan+vlandev parameters are passed
to ifconfig at once.
Future work: Consider introducing several ifconfig callback lists
to invoke callbacks orderly.
MFC after: 1 week
introduce "-tunnel" as an alias for "deletetunnel".
The latter is overly long and prone to typos, but
keep it for POLA since it costs nothing.
MFC after: 5 days
print potentially sensitive keying material to stdout. With the new
802.11 support, ifconfig(8) is now capable of printing 802.11 keys,
and did by default for the root user, which is undesirable in some
environments. Now it will not print keying material unless requested
(and available to the user).
MFC after: 1 week
special-purpose code to display status for an interface for
state that was not address-oriented. This status reporting
was merged in to the address-oriented status reporting but
did not work for link address reporting (as discovered with
fwip interfaces). Correct this mis-merge and eliminate the
bogus kludge that was used for link-level address reporting.
o add an af_other_status method for an address family for
reporting status of things like media, vlan, etc.
o call the af_other_status methods after reporting address
status for an interface
o special-case link address status; when reporting all
status for an interface invoke it specially prior to
reporting af_other_status methods (since it requires the
sockaddr_dl that is passed in to status separately from
the rtmsg address state)
o correct the calling convention for link address status;
don't cast types, construct the proper parameter
This fixes ifconfig on fwip interfaces.
o break per-address family support out into separate files
o modularize per-address family and functional operations using
a registration mechanism; this permits configuration according
to which files you include (but beware that order of the files
is important to insure backwards compatibility)
o many cleanups to eliminate incestuous behaviour, global variables,
and poor coding practices (still much more to fix)
The original motivation of this work was to support dynamic addition
of functionality based on the interface so we can eliminate the various
little control programs and so that vendors can distribute ifconfig
plugins that support their in-kernel code. That work is still to be
completed.
o Update 802.11 support for all the new net80211 functionality; some
of these operations (e.g. list *) may be better suited in a different
program
increasing it. Add code to ifconfig to use this size to find the
sockaddr_dl after the struct if_data in the routing message. This
allows struct if_data to grow (up to 255 bytes) without breaking
ifconfig.
Submitted by: peter
the bug exists in little-endian machine, it was not triggered due
to the difference of memory ordering between little/big endian
machines. Instead of relying on possibly modified value during
function invokcations, use saved copy of ifr.ifr_addr.sa_family.
Also add a comment at the top of ifconfig.c clarifying the issue
so the bug won't re-appear.
Approved by: jake
Reviewed by: yar
prior sysctl due to the structure growing between calls try again.
Also try again for deleting routes if things fail. We've seen
route -f fail this way which does not actually flush all routes.
This fixes it. It will whine but it will do the work.
PR: 56732
Obtained from: IronPort
like tun are naming their modules using the 'if_; prefix and previous version of
the code failed to detect their presence in the kernel, resulting in the same
module being loaded twice.
reorganize the printing of the interface name when using wildcard
cloning so it is not printed if it we either immediately rename or
destroy the interface.
Reviewed by: ru
from the sdl because strlcpy requires that the source string be
NUL-terminated unlike strncpy.
Submitted by: Peter Jeremy <PeterJeremy at optushome dot com dot au>
name.
Prevent the kernel from potentially overflowing the interface name
variable. The size argument of strlcpy is complex because the name is
not null-terminated in sdl_data.
and to make sure that we catch oversized arguments rather than silently
truncate them. I dont know if sscanf will reject an integer if it will
not fit in the short return variable or not, but this way it should be
detected.
regarding 802.1 MAC and Mandatory Access Control (MAC). Some
potential for confusion remains further in other areas of the
system regarding Message Authentication Codes (MAC).
Requested by: wollman
Obtained from: TrustedBSD Project
Sponsored by: DARPA, Network Associates Laboratories
interfaces using the 'mac' argument. Without MAC support in the
kernel, this does not change the behavior of ifconfig.
Approved by: re
Obtained from: TrustedBSD Project
Sponsored by: DARPA, Network Associates Laboratories
