Commit Graph

1351 Commits

Author SHA1 Message Date
Robert Watson
f0cace5d94 When deciding whether to call m_pullup() even though there is adequate
data in an mbuf, use M_WRITABLE() instead of a direct test of M_EXT;
the latter both unnecessarily exposes mbuf-allocator internals in the
protocol stack and is also insufficient to catch all cases of
non-writability.

(NB: m_pullup() does not actually guarantee that a writable mbuf is
returned, so further refinement of all of these code paths continues to
be required.)

Reviewed by:	bz
MFC after:	3 days
Sponsored by:	EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D900
2014-10-12 15:49:52 +00:00
Bryan Venteicher
81d3ec1763 Add context pointer and source address to the UDP tunnel callback
These are needed for the forthcoming vxlan implementation. The context
pointer means we do not have to use a spare pointer field in the inpcb,
and the source address is required to populate vxlan's forwarding table.

While I highly doubt there is an out of tree consumer of the UDP
tunneling callback, this change may be a difficult to eventually MFC.

Phabricator:	https://reviews.freebsd.org/D383
Reviewed by:	gnn
2014-10-10 06:08:59 +00:00
Bryan Venteicher
a0a9e1b57c Add missing UDP multicast receive dtrace probes
Phabricator:	https://reviews.freebsd.org/D924
Reviewed by:	rpaulo markj
MFC after:	1 month
2014-10-09 22:36:21 +00:00
Bryan Venteicher
514929b193 Move the calls to u_tun_func() into udp6_append()
A similar cleanup for UDPv4 was performed in r220620.

Phabricator:	https://reviews.freebsd.org/D383
Reviewed by:	gnn
MFC after:	1 month
2014-10-09 05:42:07 +00:00
Michael Tuexen
5558cc334d Fix a bug introduced in
https://svnweb.freebsd.org/base?view=revision&revision=272347

MFC after: 3 days
2014-10-07 16:01:17 +00:00
Michael Tuexen
4e1730b532 UPD and UDPLite require a checksum. So check for it.
MFC after: 3 days
2014-10-03 08:46:49 +00:00
Michael Tuexen
5055cfcb4d Check for UDP/IPv6 packets that the length in the UDP header is at least
the minimum. Make the check similar to the one for UDPLite/IPv6.

MFC after: 3 days
2014-10-02 10:49:01 +00:00
Michael Tuexen
76b96fbc9e Fix the checksum computation for UDPLite/IPv6. This requires the
usage of a function computing the checksum only over a part of the function.
Therefore introduce in6_cksum_partial() and implement in6_cksum() based
on that.
While there, ensure that the UDPLite packet contains at least enough bytes
to contain the header.

Reviewed by: kevlo
MFC after: 3 days
2014-10-02 10:32:24 +00:00
Hiroki Sato
9c57a5b630 Add an additional routing table lookup when m->m_pkthdr.fibnum is changed
at a PFIL hook in ip{,6}_output().  IPFW setfib rule did not perform
a routing table lookup when the destination address was not changed.

CR:	D805
2014-10-02 00:25:57 +00:00
Alexander V. Chernikov
31f0d081d8 Remove lock init from radix.c.
Radix has never managed its locking itself.
The only consumer using radix with embeded rwlock
is system routing table. Move per-AF lock inits there.
2014-10-01 14:39:06 +00:00
Michael Tuexen
83e95fb30b The default for UDPLITE_RECV_CSCOV is zero. RFC 3828 recommend
that this means full checksum coverage for received packets.
If an application is willing to accept packets with partial
coverage, it is expected to use the socekt option and provice
the minimum coverage it accepts.

Reviewed by: kevlo
MFC after: 3 days
2014-10-01 05:43:29 +00:00
Michael Tuexen
0f4a03663b If the checksum coverage field in the UDPLITE header is the length
of the complete UDPLITE packet, the packet has full checksum coverage.
SO fix the condition.

Reviewed by: kevlo
MFC after: 3 days
2014-09-30 18:17:28 +00:00
Andrey V. Elsukov
d1729484d4 Remove redundant call to ipsec_getpolicybyaddr().
ipsec_hdrsiz() will call it internally.

Sponsored by:	Yandex LLC
2014-09-30 13:15:19 +00:00
Kevin Lo
0bc40ebf00 When plen != ulen, it should only be checked when this is UDP.
Spotted by:	bryanv
2014-09-30 07:28:31 +00:00
Alan Somers
4f8585e021 Revisions 264905 and 266860 added a "int fib" argument to ifa_ifwithnet and
ifa_ifwithdstaddr. For the sake of backwards compatibility, the new
arguments were added to new functions named ifa_ifwithnet_fib and
ifa_ifwithdstaddr_fib, while the old functions became wrappers around the
new ones that passed RT_ALL_FIBS for the fib argument. However, the
backwards compatibility is not desired for FreeBSD 11, because there are
numerous other incompatible changes to the ifnet(9) API. We therefore
decided to remove it from head but leave it in place for stable/9 and
stable/10. In addition, this commit adds the fib argument to
ifa_ifwithbroadaddr for consistency's sake.

sys/sys/param.h
	Increment __FreeBSD_version

sys/net/if.c
sys/net/if_var.h
sys/net/route.c
	Add fibnum argument to ifa_ifwithbroadaddr, and remove the _fib
	versions of ifa_ifwithdstaddr, ifa_ifwithnet, and ifa_ifwithroute.

sys/net/route.c
sys/net/rtsock.c
sys/netinet/in_pcb.c
sys/netinet/ip_options.c
sys/netinet/ip_output.c
sys/netinet6/nd6.c
	Fixup calls of modified functions.

share/man/man9/ifnet.9
	Document changed API.

CR:		https://reviews.freebsd.org/D458
MFC after:	Never
Sponsored by:	Spectra Logic
2014-09-11 20:21:03 +00:00
Andrey V. Elsukov
343e440f63 Add const qualifier to in6_addrhash() function.
Add in6ifa_ifwithaddr() function. It is similar to ifa_ifwithaddr,
but does fast lookup in the hash of inet6 addresses.

Obtained from:	Yandex LLC
Sponsored by:	Yandex LLC
2014-09-11 13:18:41 +00:00
Andrey V. Elsukov
80803aa289 * use M_ZERO flag with malloc instead of explicit zeroing.
* remove MULTI_SCOPE ifdef.

Obtained from:	Yandex LLC
Sponsored by:	Yandex LLC
2014-09-11 12:54:17 +00:00
Andrey V. Elsukov
41874e85d6 Introduce new scope related functions.
* new macro to remove magic number - IPV6_ADDR_SCOPES_COUNT;
* sa6_checkzone() - this function checks sockaddr_in6 structure
  for correctness of sin6_scope_id. It also can fill correct
  value sometimes.
* in6_getscopezone() - this function returns scope zone id for
  specified interface and scope.
* in6_getlinkifnet() - this function returns struct ifnet for
  corresponding zone id of link-local scope.

Obtained from:	Yandex LLC
Sponsored by:	Yandex LLC
2014-09-11 12:33:37 +00:00
Andrey V. Elsukov
573791d01c * constify argument of in6_addrscope();
* use IN6_IS_ADDR_XXX() macro instead of hardcoded values;
* for multicast addresses just return scope value, the only exception
  is addresses with 0x0F scope value (RFC 4291 p2.7.0);

Obtained from:	Yandex LLC
Sponsored by:	Yandex LLC
2014-09-11 10:27:59 +00:00
Andrey V. Elsukov
9196891fc9 Add additional checks for IPV6_PKTINFO handling (RFC 3542):
* Return ENETDOWN when interface specified by ipi6_ifindex is not
  enabled for IPv6 use.
* Return EADDRNOTAVAIL when ipi6_ifindex specifies an interface, but the
  address ipi6_addr is not available for use on that interface.
* Return EINVAL when ipi6_addr is multicast address.

Obtained from:	Yandex LLC
Sponsored by:	Yandex LLC
2014-09-10 14:32:07 +00:00
Andrey V. Elsukov
a7e201bbac Make in6_pcblookup_hash_locked and in6_pcbladdr static.
Obtained from:	Yandex LLC
Sponsored by:	Yandex LLC
2014-09-10 13:17:35 +00:00
Andrey V. Elsukov
1b44e5ffe3 Introduce INP6_PCBHASHKEY macro. Replace usage of hardcoded part of
IPv6 address as hash key in all places.

Obtained from:	Yandex LLC
2014-09-10 12:35:42 +00:00
Andrey V. Elsukov
5dbfa43f65 Add the ability to set `prefer_source' flag to an IPv6 address.
It affects the IPv6 source address selection algorithm (RFC 6724)
and allows override the last rule ("longest matching prefix") for
choosing among equivalent addresses. The address with `prefer_source'
will be preferred source address.

Obtained from:	Yandex LLC
MFC after:	1 month
Sponsored by:	Yandex LLC
2014-09-09 10:52:50 +00:00
Adrian Chadd
a4d98bf442 Add basic RSS awareness for the UDPv6 send path.
This doesn't include the same kind of userland overriding that the IPv4
path has; nor does it yet know about 2-tuple versus 4-tuple hashing.
That'll come later.

Differential Revision:	https://reviews.freebsd.org/D527
Reviewed by:	grehan
2014-09-09 04:20:53 +00:00
Adrian Chadd
b174de323a Add IP_NODEFAULTFLOWID awareness to ip6_output().
Differential Revision:	https://reviews.freebsd.org/D527
2014-09-09 00:21:21 +00:00
Michael Tuexen
24aaac8d59 Use union sctp_sockstore instead of struct sockaddr_storage. This
eliminiates some warnings when building in userland.
Thanks to Patrick Laimbock for reporting this issue.
Remove also some unnecessary casts.
There should be no functional change.

MFC after: 1 week
2014-09-07 09:06:26 +00:00
Andrey V. Elsukov
ccc53de916 Add the reverse part to rule . Also change its description in the
netstat(8) output.

MFC after:	1 week
2014-09-01 09:30:34 +00:00
Mark Johnston
5fc2632281 Add some missing checks for unsupported interfaces (e.g. pflog(4)) when
handling ioctls. While here, remove duplicated checks for a NULL ifp in
in6_control(): this check is already done near the beginning of the
function.

PR:		189117
Reviewed by:	hrs
MFC after:	2 weeks
2014-08-22 19:21:08 +00:00
Kevin Lo
73d76e77b6 Change pr_output's prototype to avoid the need for explicit casts.
This is a follow up to r269699.

Phabric:	D564
Reviewed by:	jhb
2014-08-15 02:43:02 +00:00
Kevin Lo
8f5a8818f5 Merge 'struct ip6protosw' and 'struct protosw' into one. Now we have
only one protocol switch structure that is shared between ipv4 and ipv6.

Phabric:	D476
Reviewed by:	jhb
2014-08-08 01:57:15 +00:00
Andrey V. Elsukov
d6e6b9943b Add new rule to source address selection algorithm. It prefers address
with better virtual status. Use ifa_preferred() to choose better address.

PR:		187341
Tested by:	des
MFC after:	1 week
2014-07-30 15:08:12 +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
Hiroki Sato
9be09a6e43 Fix EtherIP. TOS field must be initialized when the inner protocol is
PF_LINK, and multicast/broadcast flag should always be dropped because
the outer protocol uses unicast even when the inner address is not for
unicast.  It had been broken since r236951 when gif_output() started to
use IFQ_HANDOFF().
2014-07-24 10:42:47 +00:00
Adrian Chadd
0ae3f42231 When it's time to do 4-tuple UDP IPv6 hashing, make sure this is a known
type.
2014-07-20 07:39:54 +00:00
Adrian Chadd
c7c0d94874 Add IPv6 flowid, bindmulti and RSS awareness. 2014-07-12 05:46:33 +00:00
Adrian Chadd
a8a2d8003a Add INP_RSS_BUCKET_SET awareness for IPv6 pcbgroup entries.
This ensures that a listen socket with INP_RSS_BUCKET_SET set will use
the pre-determined PCBGROUP rather than what the hashing path chooses.
2014-07-12 05:45:53 +00:00
Adrian Chadd
6e4405cee1 Add the IPv6 versions of the multi-bind, hash/hash type and RSS options. 2014-07-12 05:44:16 +00:00
Andrey V. Elsukov
ff899182ec Fix condition.
Sponsored by:	Yandex LLC
2014-07-11 06:34:15 +00:00
Bryan Venteicher
6700a7d44b Use the appropriate IPv6 hashtype defines when looking up the PCBGROUP
Reviewed by:	adrian@
2014-07-07 00:02:49 +00:00
Hans Petter Selasky
af3b2549c4 Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
Glen Barber
37a107a407 Revert r267961, r267973:
These changes prevent sysctl(8) from returning proper output,
such as:

 1) no output from sysctl(8)
 2) erroneously returning ENOMEM with tools like truss(1)
    or uname(1)
 truss: can not get etype: Cannot allocate memory
2014-06-27 22:05:21 +00:00
Hans Petter Selasky
3da1cf1e88 Extend the meaning of the CTLFLAG_TUN flag to automatically check if
there is an environment variable which shall initialize the SYSCTL
during early boot. This works for all SYSCTL types both statically and
dynamically created ones, except for the SYSCTL NODE type and SYSCTLs
which belong to VNETs. A new flag, CTLFLAG_NOFETCH, has been added to
be used in the case a tunable sysctl has a custom initialisation
function allowing the sysctl to still be marked as a tunable. The
kernel SYSCTL API is mostly the same, with a few exceptions for some
special operations like iterating childrens of a static/extern SYSCTL
node. This operation should probably be made into a factored out
common macro, hence some device drivers use this. The reason for
changing the SYSCTL API was the need for a SYSCTL parent OID pointer
and not only the SYSCTL parent OID list pointer in order to quickly
generate the sysctl path. The motivation behind this patch is to avoid
parameter loading cludges inside the OFED driver subsystem. Instead of
adding special code to the OFED driver subsystem to post-load tunables
into dynamically created sysctls, we generalize this in the kernel.

Other changes:
- Corrected a possibly incorrect sysctl name from "hw.cbb.intr_mask"
to "hw.pcic.intr_mask".
- Removed redundant TUNABLE statements throughout the kernel.
- Some minor code rewrites in connection to removing not needed
TUNABLE statements.
- Added a missing SYSCTL_DECL().
- Wrapped two very long lines.
- Avoid malloc()/free() inside sysctl string handling, in case it is
called to initialize a sysctl from a tunable, hence malloc()/free() is
not ready when sysctls from the sysctl dataset are registered.
- Bumped FreeBSD version to indicate SYSCTL API change.

MFC after:	2 weeks
Sponsored by:	Mellanox Technologies
2014-06-27 16:33:43 +00:00
Hajimu UMEMOTO
f4839cbc0a Make nd6_gctimer tunable.
MFC after:	1 week
2014-06-23 16:27:29 +00:00
Kevin Lo
ea93c6a613 Catch up with r186809, correct comments. 2014-06-23 05:17:39 +00:00
Andrey V. Elsukov
45b4fb0449 Remove unused variable.
Sponsored by:	Yandex LLC
2014-06-08 09:08:51 +00:00
Alan Somers
2f308a343f Fix unintended KBI change from r264905. Add _fib versions of
ifa_ifwithnet() and ifa_ifwithdstaddr()  The legacy functions will call the
_fib() versions with RT_ALL_FIBS, preserving legacy behavior.

sys/net/if_var.h
sys/net/if.c
	Add legacy-compatible functions as described above.  Ensure legacy
	behavior when RT_ALL_FIBS is passed as fibnum.

sys/netinet/in_pcb.c
sys/netinet/ip_output.c
sys/netinet/ip_options.c
sys/net/route.c
sys/net/rtsock.c
sys/netinet6/nd6.c
	Call with _fib() functions if we must use a specific fib, or the
	legacy functions otherwise.

tests/sys/netinet/fibs_test.sh
tests/sys/netinet/udp_dontroute.c
	Improve the udp_dontroute test.  The bug that this test exercises is
	that ifa_ifwithnet() will return the wrong address, if multiple
	interfaces have addresses on the same subnet but with different
	fibs.  The previous version of the test only considered one possible
	failure mode: that ifa_ifwithnet_fib() might fail to find any
	suitable address at all.  The new version also checks whether
	ifa_ifwithnet_fib() finds the correct address by checking where the
	ARP request goes.

Reported by:	bz, hrs
Reviewed by:	hrs
MFC after:	1 week
X-MFC-with:	264905
Sponsored by:	Spectra Logic
2014-05-29 21:03:49 +00:00
Hiroki Sato
82a9fa4a1d Add rwlock to struct dadq. A panic could occur when a large number of
addresses performed DAD at the same time.
2014-05-29 20:53:53 +00:00
VANHULLEBUS Yvan
aaf2cfc0d6 Fixed IPv4-in-IPv6 and IPv6-in-IPv4 IPsec tunnels.
For IPv6-in-IPv4, you may need to do the following command
on the tunnel interface if it is configured as IPv4 only:
ifconfig <interface> inet6 -ifdisabled

Code logic inspired from NetBSD.

PR: kern/169438
Submitted by: emeric.poupon@netasq.com
Reviewed by: fabient, ae
Obtained from: NETASQ
2014-05-28 12:45:27 +00:00
Hiroki Sato
705bef548a Cancel DAD for an ifa when the ifp has ND6_IFF_IFDISABLED as early as
possible and do not clear IN6_IFF_TENTATIVE.  If IFDISABLED was accidentally
set after a DAD started, TENTATIVE could be cleared because no NA was
received due to IFDISABLED, and as a result it could prevent DAD when
manually clearing IFDISABLED after that.
2014-05-16 15:53:31 +00:00
Alexander V. Chernikov
b980262e63 Pass radix head ptr along with rte to rtexpunge().
Rename rtexpunge to rt_expunge().
2014-05-03 16:28:54 +00:00