34 Commits

Author SHA1 Message Date
rwatson
60909669f0 In order to reduce use of M_EXT outside of the mbuf allocator and
socket-buffer implementations, introduce a return value for MCLGET()
(and m_cljget() that underlies it) to allow the caller to avoid testing
M_EXT itself.  Update all callers to use the return value.

With this change, very few network device drivers remain aware of
M_EXT; the primary exceptions lie in mbuf-chain pretty printers for
debugging, and in a few cases, custom mbuf and cluster allocation
implementations.

NB: This is a difficult-to-test change as it touches many drivers for
which I don't have physical devices.  Instead we've gone for intensive
review, but further post-commit review would definitely be appreciated
to spot errors where changes could not easily be made mechanically,
but were largely mechanical in nature.

Differential Revision:	https://reviews.freebsd.org/D1440
Reviewed by:	adrian, bz, gnn
Sponsored by:	EMC / Isilon Storage Division
2015-01-06 12:59:37 +00:00
glebius
b3b337a80e Mechanically convert to if_inc_counter(). 2014-09-19 03:51:26 +00:00
glebius
b38edcd355 Since 32-bit if_baudrate isn't enough to describe a baud rate of a 10 Gbit
interface, in the r241616 a crutch was provided. It didn't work well, and
finally we decided that it is time to break ABI and simply make if_baudrate
a 64-bit value. Meanwhile, the entire struct if_data was reviewed.

o Remove the if_baudrate_pf crutch.

o Make all fields of struct if_data fixed machine independent size. The
  notion of data (packet counters, etc) are by no means MD. And it is a
  bug that on amd64 we've got a 64-bit counters, while on i386 32-bit,
  which at modern speeds overflow within a second.

  This also removes quite a lot of COMPAT_FREEBSD32 code.

o Give 16 bit for the ifi_datalen field. This field was provided to
  make future changes to if_data less ABI breaking. Unfortunately the
  8 bit size of it had effectively limited sizeof if_data to 256 bytes.

o Give 32 bits to ifi_mtu and ifi_metric.
o Give 64 bits to the rest of fields, since they are counters.

__FreeBSD_version bumped.

Discussed with:	emax
Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2014-03-13 03:42:24 +00:00
glebius
ff6e113f1b The r48589 promised to remove implicit inclusion of if_var.h soon. Prepare
to this event, adding if_var.h to files that do need it. Also, include
all includes that now are included due to implicit pollution via if_var.h

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2013-10-26 17:58:36 +00:00
glebius
a69aaa7721 Mechanically substitute flags from historic mbuf allocator with
malloc(9) flags in sys/dev.
2012-12-04 09:32:43 +00:00
sobomax
213eac1f2c Add new tunable 'net.link.ifqmaxlen' to set default send interface
queue length. The default value for this parameter is 50, which is
quite low for many of today's uses and the only way to modify this
parameter right now is to edit if_var.h file. Also add read-only
sysctl with the same name, so that it's possible to retrieve the
current value.

MFC after:	1 month
2010-05-03 07:32:50 +00:00
jhb
bc107b3828 Disable the inline assembly crc32 routine and use the C version instead.
The assembly version is reported to be broken on 5.x+.

PR:		kern/100425
Submitted by:	Rashid N. Achilov  shelton www.granch.ru
MFC after:	1 week
2008-09-10 18:42:19 +00:00
jhb
70e9d3b331 Resurrect the sbni(4) driver. Someone finally tested the MPSAFE patches and
the driver worked ok with them.

Tested by:	friends of yar
2008-09-10 18:36:58 +00:00
jhb
a495f456d1 Remove the sbni(4) driver. No one responded to calls to test it on
current@ and stable@.
2008-07-04 21:06:57 +00:00
jhb
1ad481ce50 Make sbni(4) MPSAFE:
- Add a mutex to the softc and use it to protect the softc and device
  hardware.
- Setup interrupt handler after attaching device to network stack.
- Use device_set_desc() rather than device_quiet() plus a manual printf
  that simulates the normal probe printf.
- Axe next_sbni_unit and instead just leave room for two sbni devices for
  each bus attachment.
- Don't bzero the already-zero'd softc.
- Add a detach method to the PCI driver.
- Add a lock to protect the list of available devices used to chain
  interrupt handlers for dual port ISA cards.
- Remove unused watchdog routine.
- If if_alloc() fails, make sbni_attach() return an error rather than
  panic'ing.
- Consolidate code to free bus resources into sbni_release_resources().
- Clear IFF_DRV_RUNNING|OACTIVE in stop() routine instead of in callers.
- Let ether_ioctl() handle SIOCSIFMTU.
2008-07-04 20:53:41 +00:00
peter
650a9e6039 Quiet framelen uninitialized warning. I think it was a false alarm.
If check_fhdr() returns false, the frame_ok variable should protect any
meaningful evaluations of framelen.

Approved by: re (rwatson)
2007-07-05 07:46:33 +00:00
rwatson
10d0d9cf47 Sweep kernel replacing suser(9) calls with priv(9) calls, assigning
specific privilege names to a broad range of privileges.  These may
require some future tweaking.

Sponsored by:           nCircle Network Security, Inc.
Obtained from:          TrustedBSD Project
Discussed on:           arch@
Reviewed (at least in part) by: mlaier, jmg, pjd, bde, ceri,
                        Alex Lyashkov <umka at sevcity dot net>,
                        Skip Ford <skip dot ford at verizon dot net>,
                        Antoine Brodin <antoine dot brodin at laposte dot net>
2006-11-06 13:42:10 +00:00
ru
f70f525b49 - Store pointer to the link-level address right in "struct ifnet"
rather than in ifindex_table[]; all (except one) accesses are
  through ifp anyway.  IF_LLADDR() works faster, and all (except
  one) ifaddr_byindex() users were converted to use ifp->if_addr.

- Stop storing a (pointer to) Ethernet address in "struct arpcom",
  and drop the IFP2ENADDR() macro; all users have been converted
  to use IF_LLADDR() instead.
2005-11-11 16:04:59 +00:00
rwatson
5d770a09e8 Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and
IFF_DRV_RUNNING, as well as the move from ifnet.if_flags to
ifnet.if_drv_flags.  Device drivers are now responsible for
synchronizing access to these flags, as they are in if_drv_flags.  This
helps prevent races between the network stack and device driver in
maintaining the interface flags field.

Many __FreeBSD__ and __FreeBSD_version checks maintained and continued;
some less so.

Reviewed by:	pjd, bz
MFC after:	7 days
2005-08-09 10:20:02 +00:00
brooks
567ba9b00a Stop embedding struct ifnet at the top of driver softcs. Instead the
struct ifnet or the layer 2 common structure it was embedded in have
been replaced with a struct ifnet pointer to be filled by a call to the
new function, if_alloc(). The layer 2 common structure is also allocated
via if_alloc() based on the interface type. It is hung off the new
struct ifnet member, if_l2com.

This change removes the size of these structures from the kernel ABI and
will allow us to better manage them as interfaces come and go.

Other changes of note:
 - Struct arpcom is no longer referenced in normal interface code.
   Instead the Ethernet address is accessed via the IFP2ENADDR() macro.
   To enforce this ac_enaddr has been renamed to _ac_enaddr.
 - The second argument to ether_ifattach is now always the mac address
   from driver private storage rather than sometimes being ac_enaddr.

Reviewed by:	sobomax, sam
2005-06-10 16:49:24 +00:00
imp
4b319958e7 Start each of the license/copyright comments with /*-, minor shuffle of lines 2005-01-06 01:43:34 +00:00
rwatson
85f7f92072 Since if_sbni doesn't contain locking or run with INTR_MPSAFE, mark
the interface as IFF_NEEDSGIANT so if_start is run holding Giant.
2004-08-13 23:41:00 +00:00
mux
03028ee82d We don't need to initialize if_output, ether_ifattach() does it
for us.
2004-05-23 16:11:53 +00:00
luigi
7d7307d2e1 Remove improper use of if_addrhead in device drivers to check
if the link-level address has been initialized already.

The majority of modern drivers never does this and works fine, which
makes me think that the check is totally unnecessary and a residue
of cut&paste from other drivers.

This change is done to simplify locking because now almost none of the
drivers uses this field. The exceptions are "ct" "ctau" and "cx"
where i am not sure if i can remove that part.
2004-04-15 20:31:10 +00:00
mdodd
5c1fa8d5da Announce ethernet MAC addresss in ether_ifattach(). 2004-03-14 07:12:25 +00:00
brooks
f1e94c6f29 Replace the if_name and if_unit members of struct ifnet with new members
if_xname, if_dname, and if_dunit. if_xname is the name of the interface
and if_dname/unit are the driver name and instance.

This change paves the way for interface renaming and enhanced pseudo
device creation and configuration symantics.

Approved By:	re (in principle)
Reviewed By:	njl, imp
Tested On:	i386, amd64, sparc64
Obtained From:	NetBSD (if_xname)
2003-10-31 18:32:15 +00:00
brooks
38e31120fc There is no way to enter the attach routine twice with the same softc
without a detach call in between so don't try to deal with that
possiability.

This is a diff-reduction commit for the upcoming if_xname conversion.
2003-10-30 19:45:58 +00:00
obrien
5efef14f5f Use __FBSDID().
Also some minor style cleanups.
2003-08-24 18:03:45 +00:00
kan
fd945a32e8 Fix i386 assembly constraints. The same register cannot be
in output and clobber lists at the same time.
2003-07-11 07:49:40 +00:00
imp
cf874b345d Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
alfred
bf8e8a6e8f Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
sam
14c32b5f40 network interface driver changes:
o don't strip the Ethernet header from inbound packets; pass packets
  up the stack intact (required significant changes to some drivers)
o reference common definitions in net/ethernet.h (e.g. ETHER_ALIGN)
o track ether_ifattach/ether_ifdetach API changes
o track bpf changes (use BPF_TAP and BPF_MTAP)
o track vlan changes (ifnet capabilities, revised processing scheme, etc.)
o use if_input to pass packets "up"
o call ether_ioctl for default handling of ioctls

Reviewed by:	many
Approved by:	re
2002-11-14 23:54:55 +00:00
brooks
b8c0848b15 Use if_printf() instead of printf() to print "sbni#: blah". 2002-10-01 00:55:22 +00:00
alfred
2b5b784b49 use __packed/__aligned rather than GCC-specific __attribute__. 2002-09-23 06:35:33 +00:00
fjoe
7bf0358c9b Make driver portable:
- bus_space'ify
- generate fake ethernet address using read_random() instead of reading
from timer i/o ports

Other minor fixes:
- remove "hack" in connect_to_master()
- use M_ZERO
- remove unused variable in sbni_ioctl()
- properly release irq in sbni_attach_isa() on attach errors
2002-08-05 18:14:16 +00:00
fjoe
d8fc8f4943 style fixes 2002-08-05 17:20:17 +00:00
jhb
dc2e474f79 Change the suser() API to take advantage of td_ucred as well as do a
general cleanup of the API.  The entire API now consists of two functions
similar to the pre-KSE API.  The suser() function takes a thread pointer
as its only argument.  The td_ucred member of this thread must be valid
so the only valid thread pointers are curthread and a few kernel threads
such as thread0.  The suser_cred() function takes a pointer to a struct
ucred as its first argument and an integer flag as its second argument.
The flag is currently only used for the PRISON_ROOT flag.

Discussed on:	smp@
2002-04-01 21:31:13 +00:00
msmith
2666545aeb Rename a variable that might accidentally be duplicated elsewhere. 2002-01-08 19:36:54 +00:00
fjoe
f5a400b003 Add driver for Granch SBNI12-xx ISA and PCI network adapters.
MFC after:	1 week
2001-11-21 22:29:35 +00:00