Commit Graph

150 Commits

Author SHA1 Message Date
Alexander V. Chernikov
ea463f2dc0 * Add SIOCGI2C driver ioctl used to retrieve i2c info.
* Convert ixgbe to use this ioctl
* Convert ifconfig to use generic i2c handler for  "ix" interfaces.

Approved by:	Eric Joyner (ixgbe part)
MFC after:	2 weeks
Sponsored by:	Yandex LLC
2014-08-29 18:02:58 +00:00
Gleb Smirnoff
9753faf553 Garbage collect couple of unused fields from struct ifaddr:
- ifa_claim_addr() unused since removal of NetAtalk
- ifa_metric seems to be never utilized, always a copy of if_metric
2014-07-29 15:01:29 +00:00
Gleb Smirnoff
b245f96c44 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
Gleb Smirnoff
555036b5f6 Remove never used ioctls that originate from KAME. The proof
of their zero usage was exp-run from misc/183538.
2013-11-11 05:39:42 +00:00
Gleb Smirnoff
77b89ad837 Provide compat layer for OSIOCAIFADDR. 2013-11-06 19:46:20 +00:00
Gleb Smirnoff
af50ea380f Axe IFF_SMART. Fortunately this layering violating flag was never used,
it was just declared.
2013-11-05 12:52:56 +00:00
Gleb Smirnoff
5fb009bda7 Drop support for historic ioctls and also undefine them, so that code
that checks their presence via ifdef, won't use them.

Bump __FreeBSD_version as safety measure.
2013-11-05 10:29:47 +00:00
Gleb Smirnoff
c29e1ad930 - Make the prophecy from 1997 happen and remove if_var.h inclusion
from if.h.
- Remove unnecessary includes and declarations from if.h
- Remove unnecessary includes and declarations from if_var.h [1]
- Mark some declarations that are about to be removed in near
  future with comments, explaning why this declaration is still
  necessary.
- Protect eventhandler declarations with #ifdef SYS_EVENTHANDLER_H.

Obtained from:	bdeBSD [1]
Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2013-10-28 08:03:40 +00:00
Gleb Smirnoff
4cdc1f5421 There are some high performance NICs that count statistics in hardware,
and there are ifnets, that do that via counter(9). Provide a flag that
would skip cache line trashing '+=' operation in ether_input().

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
Reviewed by:	melifaro, adrian
Approved by:	re (marius)
2013-10-09 19:04:40 +00:00
Andre Oppermann
1b4381afbb Restructure the mbuf pkthdr to make it fit for upcoming capabilities and
features.  The changes in particular are:

o Remove rarely used "header" pointer and replace it with a 64bit protocol/
  layer specific union PH_loc for local use.  Protocols can flexibly overlay
  their own 8 to 64 bit fields to store information while the packet is
  worked on.

o Mechanically convert IP reassembly, IGMP/MLD and ATM to use pkthdr.PH_loc
  instead of pkthdr.header.

o Extend csum_flags to 64bits to allow for additional future offload
  information to be carried (e.g. iSCSI, IPsec offload, and others).

o Move the RSS hash type enumerator from abusing m_flags to its own 8bit
  rsstype field.  Adjust accessor macros.

o Add cosqos field to store Class of Service / Quality of Service information
  with the packet.  It is not yet supported in any drivers but allows us to
  get on par with Cisco/Juniper in routing applications (plus MPLS QoS) with
  a modernized ALTQ.

o Add four 8 bit fields l[2-5]hlen to store the relative header offsets
  from the start of the packet.  This is important for various offload
  capabilities and to relieve the drivers from having to parse the packet
  and protocol headers to find out location of checksums and other
  information.  Header parsing in drivers is a lot of copy-paste and
  unhandled corner cases which we want to avoid.

o Add another flexible 64bit union to map various additional persistent
  packet information, like ether_vtag, tso_segsz and csum fields.
  Depending on the csum_flags settings some fields may have different usage
  making it very flexible and adaptable to future capabilities.

o Restructure the CSUM flags to better signify their outbound (down the
  stack) and inbound (up the stack) use.  The CSUM flags used to be a bit
  chaotic and rather poorly documented leading to incorrect use in many
  places.  Bring clarity into their use through better naming.
  Compatibility mappings are provided to preserve the API.  The drivers
  can be corrected one by one and MFC'd without issue.

o The size of pkthdr stays the same at 48/56bytes (32/64bit architectures).

Sponsored by:	The FreeBSD Foundation
2013-08-24 19:51:18 +00:00
Maksim Yevmenkin
608ae712d3 provide helper if_initbaudrate() to set if_baudrate_pf and if_baudrate_pf.
again, use ixgbe(4) as an example of how to use new helper function.

Reviewed by:	jhb
MFC after:	1 week
2012-10-17 19:24:13 +00:00
Maksim Yevmenkin
0fef97fea3 introduce concept of ifi_baudrate power factor. the idea is to work
around the problem where high speed interfaces (such as ixgbe(4))
are not able to report real ifi_baudrate. bascially, take a spare
byte from struct if_data and use it to store ifi_baudrate power
factor. in other words,

real ifi_baudrate = ifi_baudrate * 10 ^ ifi_baudrate power factor

this should be backwards compatible with old binaries. use ixgbe(4)
as an example on how drivers would set ifi_baudrate power factor

Discussed with:	kib, scottl, glebius
MFC after:	1 week
2012-10-16 20:18:15 +00:00
John Baldwin
304050dde0 Hold GIF_LOCK() for almost all of gif_start(). It is required to be held
across in_gif_output() and in6_gif_output() anyway, and once it is held
across those it might as well be held for the entire loop.  This simplifies
the code and removes the need for the custom IFF_GIF_WANTED flag (which
belonged in the softc and not as an IFF_* flag anyway).

Tested by:	Vincent Hoffman  vince  unsane co uk
2012-06-29 15:21:34 +00:00
Randall Stewart
6f17e3a31a Opps forgot to commit the flag. 2012-06-12 12:40:15 +00:00
Bjoern A. Zeeb
356ab07e2d It turns out that too many drivers are not only parsing the L2/3/4
headers for TSO but also for generic checksum offloading.  Ideally we
would only have one common function shared amongst all drivers, and
perhaps when updating them for IPv6 we should introduce that.
Eventually we should provide the meta information along with mbufs to
avoid (re-)parsing entirely.

To not break IPv6 (checksums and offload) and to be able to MFC the
changes without risking to hurt 3rd party drivers, duplicate the v4
framework, as other OSes have done as well.

Introduce interface capability flags for TX/RX checksum offload with
IPv6, to allow independent toggling (where possible).  Add CSUM_*_IPV6
flags for UDP/TCP over IPv6, and reserve further for SCTP, and IPv6
fragmentation.  Define CSUM_DELAY_DATA_IPV6 as we do for legacy IP and
add an alias for CSUM_DATA_VALID_IPV6.

This pretty much brings IPv6 handling in line with IPv4.
TSO is still handled in a different way and not via if_hwassist.

Update ifconfig to allow (un)setting of the new capability flags.
Update loopback to announce the new capabilities and if_hwassist flags.

Individual driver updates will have to follow, as will SCTP.

Reported by:	gallatin, dim, ..
Reviewed by:	gallatin (glanced at?)
MFC after:	3 days
X-MFC with:	r235961,235959,235958
2012-05-28 09:30:13 +00:00
Bjoern A. Zeeb
6d076ae8f7 Introduce a new NET_RT_IFLISTL API to query the address list. It works
on extended and extensible structs if_msghdrl and ifa_msghdrl.  This
will allow us to extend both the msghdrl structs and eventually if_data
in the future without breaking the ABI.

Bump __FreeBSD_version to allow ports to more easily detect the new API.

Reviewed by:	glebius, brooks
MFC after:	3 days
2012-02-11 06:02:16 +00:00
Bjoern A. Zeeb
e82cf13bfb Backout changes from r228571. Remove if_data from struct ifa_msghdr again.
While this breaks carp on HEAD temporary, it restores the upgrade path from
stable, and head before 20111215.

Reviewed by:	glebius, brooks
2012-02-11 05:59:54 +00:00
Gleb Smirnoff
7121247312 Provide ABI compatibility shim to enable configuring of addresses
with ifconfig(8) prior to r228571.

Requested by:	brooks
2011-12-21 12:39:08 +00:00
Gleb Smirnoff
08b68b0e4c A major overhaul of the CARP implementation. The ip_carp.c was started
from scratch, copying needed functionality from the old implemenation
on demand, with a thorough review of all code. The main change is that
interface layer has been removed from the CARP. Now redundant addresses
are configured exactly on the interfaces, they run on.

The CARP configuration itself is, as before, configured and read via
SIOCSVH/SIOCGVH ioctls. A new prefix created with SIOCAIFADDR or
SIOCAIFADDR_IN6 may now be configured to a particular virtual host id,
which makes the prefix redundant.

ifconfig(8) semantics has been changed too: now one doesn't need
to clone carpXX interface, he/she should directly configure a vhid
on a Ethernet interface.

To supply vhid data from the kernel to an application the getifaddrs(8)
function had been changed to pass ifam_data with each address. [1]

The new implementation definitely closes all PRs related to carp(4)
being an interface, and may close several others. It also allows
to run a single redundant IP per interface.

Big thanks to Bjoern Zeeb for his help with inet6 part of patch, for
idea on using ifam_data and for several rounds of reviewing!

PR:		kern/117000, kern/126945, kern/126714, kern/120130, kern/117448
Reviewed by:	bz
Submitted by:	bz [1]
2011-12-16 12:16:56 +00:00
Ed Schouten
cf05e311ea Add missing #includes.
According to POSIX, these two header files should be able to be included
by themselves, not depending on other headers. The <net/if.h> header
uses struct sockaddr when __BSD_VISIBLE=1, while <netinet/tcp.h> uses
integer datatypes (u_int32_t, u_short, etc).

MFC after:	2 months
2011-10-21 12:58:34 +00:00
Bjoern A. Zeeb
35fd7bc020 Add infrastructure to allow all frames/packets received on an interface
to be assigned to a non-default FIB instance.

You may need to recompile world or ports due to the change of struct ifnet.

Submitted by:	cjsp
Submitted by:	Alexander V. Chernikov (melifaro ipfw.ru)
		(original versions)
Reviewed by:	julian
Reviewed by:	Alexander V. Chernikov (melifaro ipfw.ru)
MFC after:	2 weeks
X-MFC:		use spare in struct ifnet
2011-07-03 12:22:02 +00:00
Luigi Rizzo
c9d658e9f7 Grab one of the ifcap bits for netmap, and enable printing in ifconfig.
Document the fact that we might want an IFCAP_CANTCHANGE mask,
even though the value is not yet used in sys/net/if.c

(asked on -current a week ago, no feedback so i assume no objection).
2011-06-14 12:40:55 +00:00
Weongyo Jeong
c5649739a5 Adds IFF_CANTCONFIG to IFF_CANTCHANGE that it shouldn't happen through
ioctl(2).
2010-12-07 20:31:04 +00:00
Weongyo Jeong
6e3cb00068 Introduces IFF_CANTCONFIG interface flag to point that the interface
isn't configurable in a meaningful way.  This is for ifconfig(8) or
other tools not to change code whenever IFT_USB-like interfaces are
registered at the interface list.

Reviewed by:	brooks
No objections:	gavin, jkim
2010-12-07 20:23:47 +00:00
Sergey Kandaurov
9af74f3d68 Reshuffle SIOCGIFCONF32 handler from r155224.
- move all the chunks into one file, which allows to hide SIOCGIFCONF32
  global definition as well.
- replace __amd64__ with proper COMPAT_FREEBSD32 around.
- handle 32bit capacity before going into the handler itself instead of
  doing internal 32bit specific changes within it (e.g. as it's done for
  SIOCGDEFIFACE32_IN6).
- use explicitely sized types for ABI compat.

Approved by:	kib (mentor)
MFC after:	2 weeks
2010-10-21 16:20:48 +00:00
Qing Li
6b533b5ddb Verify interface up status using its link state only
if the interface has such capability. The interface
capability flag indicates whether such capability
exists. This approach is much more backward compatible.
Physical device driver changes will be part of another
commit.

Also updated the ifconfig utility to show the LINKSTATE
capability if present.

Reviewed by:	rwatson, imp, juli
MFC after:	3 days
2010-03-16 17:59:12 +00:00
Pyun YongHyeon
9b76d9cb3d Add TSO support on VLANs. Intentionally separated IFCAP_VLAN_HWTSO
from IFCAP_VLAN_HWTAGGING. I think some hardwares may be able to
TSO over VLAN without VLAN hardware tagging.
Driver changes and userland support will follow.

Reviewed by:	thompsa
2010-02-20 22:47:20 +00:00
Xin LI
215940b3fa Revised revision 199201 (add interface description capability as inspired
by OpenBSD), based on comments from many, including rwatson, jhb, brooks
and others.

Sponsored by:	iXsystems, Inc.
MFC after:	1 month
2010-01-27 00:30:07 +00:00
John Baldwin
5428776e2c Change vlan interfaces to cope more usefully with the parent interface being
renamed.  Previously the vlan interfaces would lose their configuration as if
the parent interface had been physically removed.  Now vlan interfaces ignore
rename events.
- Add a new ifnet flag (IFF_RENAMING) that is set while an ifnet is being
  renamed.  This flag can be checked in ifnet departure/arrival event
  handlers to treat rename events differently.
- Change the ifnet departure event handler in the if_vlan(4) driver to
  ignore departure events due to a trunk interface being renamed.

Reviewed by:	brooks, rwatson
MFC after:	1 week
2009-12-29 13:35:18 +00:00
Xin LI
1a9d4dda9b Revert revision 199201 for now as it has introduced a kernel vulnerability
and requires more polishing.
2009-11-12 19:02:10 +00:00
Xin LI
41c8c6e876 Add interface description capability as inspired by OpenBSD.
MFC after:	3 months
2009-11-11 21:30:58 +00:00
Jamie Gritton
679e13901c Manage vnets via the jail system. If a jail is given the boolean
parameter "vnet" when it is created, a new vnet instance will be created
along with the jail.  Networks interfaces can be moved between prisons
with an ioctl similar to the one that moves them between vimages.
For now vnets will co-exist under both jails and vimages, but soon
struct vimage will be going away.

Reviewed by:	zec, julian
Approved by:	bz (mentor)
2009-06-15 18:59:29 +00:00
Attilio Rao
1abcdbd127 When user_frac in the polling subsystem is low it is going to busy the
CPU for too long period than necessary.  Additively, interfaces are kept
polled (in the tick) even if no more packets are available.
In order to avoid such situations a new generic mechanism can be
implemented in proactive way, keeping track of the time spent on any
packet and fragmenting the time for any tick, stopping the processing
as soon as possible.

In order to implement such mechanism, the polling handler needs to
change, returning the number of packets processed.
While the intended logic is not part of this patch, the polling KPI is
broken by this commit, adding an int return value and the new flag
IFCAP_POLLING_NOCOUNT (which will signal that the return value is
meaningless for the installed handler and checking should be skipped).

Bump __FreeBSD_version in order to signal such situation.

Reviewed by:	emaste
Sponsored by:	Sandvine Incorporated
2009-05-30 15:14:44 +00:00
Robert Watson
242a8e72eb Add a new interface flag, IFF_DYING, which is set when a device driver
calls if_free(), and remains set if the refcount is elevated.  IF_DYING
skips the bit in the if_flags bitmask previously used by IFF_NEEDSGIANT,
so that an MFC can be done without changing which bit is used, as
IFF_NEEDSGIANT is still present in 7.x.

ifnet_byindex_ref() checks for IFF_DYING and returns NULL if it is set,
preventing new references from by acquired by index, preventing
monitoring sysctls from seeing it.  Other lookup mechanisms currently
do not check IFF_DYING, but may need to in the future.

MFC after:	3 weeks
2009-04-23 09:32:30 +00:00
Robert Watson
04ac2960c4 Remove IFF_NEEDSGIANT interface flag: we no longer provide ifnet-layer
infrastructure to support non-MPSAFE network device drivers.
2009-04-18 20:39:17 +00:00
Luigi Rizzo
a1d4f19c0d remove unnecessary forward declaration 2009-02-16 15:09:37 +00:00
Jack F Vogel
22893351e5 Fix to bug kern/126850. Only dispatch event hander if the
interface had a parent (was attached).

Reviewed by: EvilSam
MFC after: 1 week
2008-08-28 22:05:19 +00:00
John Baldwin
feaed6c57e Trim some noise from some #ifdef's. This had leaked into the compat32
support for bpf(4) due to hacks in the Y! tree for a truss32 binary
(since superseded by native support for 32-bit binaries in truss itself).

MFC after:	1 week
2008-07-30 21:01:51 +00:00
Ian Dowse
f5f1525321 Add IFF_NEEDSGIANT to IFF_CANTCHANGE, to prevent user-level code
from clearing the IFF_NEEDSGIANT flag on Giant-locked interfaces.
In particular, wpa_supplicant was doing this on USB interfaces,
causing panics when Giant-locked code was then called without Giant.

Submitted by:	Alexey Popov
Reviewed by:	rwatson
MFC after:	3 days
2008-03-27 18:02:30 +00:00
Kip Macy
4c908c35e0 fix bonehead cut and paste error in last commit 2007-12-15 22:06:23 +00:00
Kip Macy
a0d231fbb8 Create separate capability flags for TCP over IPv4 and TCP over IPv6 2007-12-15 21:01:48 +00:00
Kip Macy
835a6f1230 add interface capability for TOE 2007-12-15 20:22:09 +00:00
Sam Leffler
de0abf19ba Wake On Lan (WOL) infrastructure
Submitted by:	Stefan Sperling <stsp@stsp.name>
Reviewed by:	brooks
2007-12-10 02:31:00 +00:00
Andre Oppermann
db24121c8b Add IFCAP_LRO flag for drivers to announce their TCP Large Receive Offload
capabilities.
2007-06-11 20:08:11 +00:00
Brooks Davis
bec59525e6 The struct if_data members ifi_recvquota and ifi_xmitquota have been
unused for ages.  Rename them to ifi_spare_char1 and ifi_spare_char2
respectively to indicate this face.
2007-05-16 18:37:37 +00:00
Yaroslav Tykhiy
d562befcdd Fix a couple of typos in a comment. 2007-05-02 11:13:48 +00:00
Andre Oppermann
233dcce118 First step of TSO (TCP segmentation offload) support in our network stack.
o add IFCAP_TSO[46] for drivers to announce this capability for IPv4 and IPv6
 o add CSUM_TSO flag to mbuf pkthdr csum_flags field
 o add tso_segsz field to mbuf pkthdr
 o enhance ip_output() packet length check to allow for large TSO packets
 o extend tcp_maxmtu[46]() with a flag pointer to pass interface capabilities
 o adjust all callers of tcp_maxmtu[46]() accordingly

Discussed on:	-current, -net
Sponsored by:	TCP/IP Optimization Fundraise 2005
2006-09-06 21:51:59 +00:00
Andre Oppermann
60d4ab7abb Improve description of if_capabilities, if_capenable and ifi_hwassist.
Sponsored by:	TCP/IP Optimization Fundraise 2005
2006-09-06 18:06:04 +00:00
Max Laier
0dad3f0e15 Import interface groups from OpenBSD. This allows to group interfaces in
order to - for example - apply firewall rules to a whole group of
interfaces.  This is required for importing pf from OpenBSD 3.9

Obtained from:	OpenBSD (with changes)
Discussed on:	-net (back in April)
2006-06-19 22:20:45 +00:00
John Baldwin
73dbd3da73 Remove various bits of conditional Alpha code and fixup a few comments. 2006-05-12 05:04:46 +00:00