History log of /freebsd/sys/netinet6/in6.c (Results 201 – 225 of 640)
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# df629abf 16-Nov-2014 Alexander V. Chernikov <melifaro@FreeBSD.org>

Rework LLE code locking:
* struct llentry is now basically split into 2 pieces:
all fields within 64 bytes (amd64) are now protected by both
ifdata lock AND lle lock, e.g. you require both locks

Rework LLE code locking:
* struct llentry is now basically split into 2 pieces:
all fields within 64 bytes (amd64) are now protected by both
ifdata lock AND lle lock, e.g. you require both locks to be held
exclusively for modification. All data necessary for fast path
operations is kept here. Some fields were added:
- r_l3addr - makes lookup key liev within first 64 bytes.
- r_flags - flags, containing pre-compiled decision whether given
lle contains usable data or not. Current the only flag is RLLE_VALID.
- r_len - prepend data len, currently unused
- r_kick - used to provide feedback to control plane (see below).
All other fields are protected by lle lock.
* Add simple state machine for ARP to handle "about to expire" case:
Current model (for the fast path) is the following:
- rlock afdata
- find / rlock rte
- runlock afdata
- see if "expire time" is approaching
(time_uptime + la->la_preempt > la->la_expire)
- if true, call arprequest() and decrease la_preempt
- store MAC and runlock rte
New model (data plane):
- rlock afdata
- find rte
- check if it can be used using r_* fields only
- if true, store MAC
- if r_kick field != 0 set it to 0.
- runlock afdata
New mode (control plane):
- schedule arptimer to be called in (V_arpt_keep - V_arp_maxtries)
seconds instead of V_arpt_keep.
- on first timer invocation change state from ARP_LLINFO_REACHABLE
to ARP_LLINFO_VERIFY, sets r_kick to 1 and shedules next call in
V_arpt_rexmit (default to 1 sec).
- on subsequent timer invocations in ARP_LLINFO_VERIFY state, checks
for r_kick value: reschedule if not changed, and send arprequest()
if set to zero (e.g. entry was used).
* Convert IPv4 path to use new single-lock approach. IPv6 bits to follow.
* Slow down in_arpinput(): now valid reply will (in most cases) require
acquiring afdata WLOCK twice. This is requirement for storing changed
lle data. This change will be slightly optimized in future.
* Provide explicit hash link/unlink functions for both ipv4/ipv6 code.
This will probably be moved to generic lle code once we have per-AF
hashing callback inside lltable.
* Perform lle unlink on deletion immediately instead of delaying it to
the timer routine.
* Make r244183 more explicit: use new LLE_CALLOUTREF flag to indicate the
presence of lle reference used for safe callout calls.

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# b4b1367a 15-Nov-2014 Alexander V. Chernikov <melifaro@FreeBSD.org>

* Move lle creation/deletion from lla_lookup to separate functions:
lla_lookup(LLE_CREATE) -> lla_create
lla_lookup(LLE_DELETE) -> lla_delete
Assume lla_create to return LLE_EXCLUSIVE lock for

* Move lle creation/deletion from lla_lookup to separate functions:
lla_lookup(LLE_CREATE) -> lla_create
lla_lookup(LLE_DELETE) -> lla_delete
Assume lla_create to return LLE_EXCLUSIVE lock for lle.
* Rework lla_rt_output to perform all lle changes under afdata WLOCK.
* change arp_ifscrub() ackquire afdata WLOCK, the same as arp_ifinit().

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Revision tags: release/10.1.0
# 06fec207 10-Nov-2014 Andrey V. Elsukov <ae@FreeBSD.org>

Remove link-local multicast routes remnants from in6_purgeaddr.
Also merge in6_purgeaddr_mc with in6_purgeaddr.

Sponsored by: Yandex LLC


# e6abaf91 10-Nov-2014 Gleb Smirnoff <glebius@FreeBSD.org>

Consistently use if_link.

Reviewed by: ae, melifaro


# 603eaf79 09-Nov-2014 Alexander V. Chernikov <melifaro@FreeBSD.org>

Renove faith(4) and faithd(8) from base. It looks like industry
have chosen different (and more traditional) stateless/statuful
NAT64 as translation mechanism. Last non-trivial commits to both
faith(

Renove faith(4) and faithd(8) from base. It looks like industry
have chosen different (and more traditional) stateless/statuful
NAT64 as translation mechanism. Last non-trivial commits to both
faith(4) and faithd(8) happened more than 12 years ago, so I assume
it is time to drop RFC3142 in FreeBSD.

No objections from: net@

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# a9413f6c 08-Nov-2014 Alexander V. Chernikov <melifaro@FreeBSD.org>

Sync to HEAD@r274297.


# 064b1bdb 07-Nov-2014 Alexander V. Chernikov <melifaro@FreeBSD.org>

Convert lle rtchecks to use new routing API.
For inet/ case, this involves reverting r225947
which seem to be pretty strange commit and should
be reverted in HEAD ad well.


# 1a75e3b2 06-Nov-2014 Alexander V. Chernikov <melifaro@FreeBSD.org>

Make checks for rt_mtu generic:

Some virtual if drivers has (ab)used ifa ifa_rtrequest hook to enforce
route MTU to be not bigger that interface MTU. While ifa_rtrequest hooking
might be an option i

Make checks for rt_mtu generic:

Some virtual if drivers has (ab)used ifa ifa_rtrequest hook to enforce
route MTU to be not bigger that interface MTU. While ifa_rtrequest hooking
might be an option in some situation, it is not feasible to do MTU checks
there: generic (or per-domain) routing code is perfectly capable of doing
this.

We currrently have 3 places where MTU is altered:

1) route addition.
In this case domain overrides radix _addroute callback (in[6]_addroute)
and all necessary checks/fixes are/can be done there.

2) route change (especially, GW change).
In this case, there are no explicit per-domain calls, but one can
override rte by setting ifa_rtrequest hook to domain handler
(inet6 does this).

3) ifconfig ifaceX mtu YYYY
In this case, we have no callbacks, but ip[6]_output performes runtime
checks and decreases rt_mtu if necessary.

Generally, the goals are to be able to handle all MTU changes in
control plane, not in runtime part, and properly deal with increased
interface MTU.

This commit changes the following:
* removes hooks setting MTU from drivers side
* adds proper per-doman MTU checks for case 1)
* adds generic MTU check for case 2)

* The latter is done by using new dom_ifmtu callback since
if_mtu denotes L3 interface MTU, e.g. maximum trasmitted _packet_ size.
However, IPv6 mtu might be different from if_mtu one (e.g. default 1280)
for some cases, so we need an abstract way to know maximum MTU size
for given interface and domain.
* moves rt_setmetrics() before MTU/ifa_rtrequest hooks since it copies
user-supplied data which must be checked.
* removes RT_LOCK_ASSERT() from other ifa_rtrequest hooks to be able to
use this functions on new non-inserted rte.

More changes will follow soon.

MFC after: 1 month
Sponsored by: Yandex LLC

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# 5c9ef378 04-Nov-2014 Alexander V. Chernikov <melifaro@FreeBSD.org>

Sync to HEAD@r274095.


# 8c3cfe0b 04-Nov-2014 Alexander V. Chernikov <melifaro@FreeBSD.org>

Hide 'struct rtentry' and all its macro inside new header:
net/route_internal.h
The goal is to make its opaque for all code except route/rtsock and
proto domain _rmx.


# 257480b8 04-Nov-2014 Alexander V. Chernikov <melifaro@FreeBSD.org>

Convert netinet6/ to use new routing API.

* Remove &ifpp from ip6_output() in favor of ri->ri_nh_info
* Provide different wrappers to in6_selectsrc:
Currently it is used by 2 differenct type of cu

Convert netinet6/ to use new routing API.

* Remove &ifpp from ip6_output() in favor of ri->ri_nh_info
* Provide different wrappers to in6_selectsrc:
Currently it is used by 2 differenct type of customers:
- socket-based one, which all are unsure about provided
address scope and
- in-kernel ones (ND code mostly), which don't have
any sockets, options, crededentials, etc.
So, we provide two different wrappers to in6_selectsrc()
returning select source.
* Make different versions of selectroute():
Currenly selectroute() is used in two scenarios:
- SAS, via in6_selecsrc() -> in6_selectif() -> selectroute()
- output, via in6_output -> wrapper -> selectroute()
Provide different versions for each customer:
- fib6_lookup_nh_basic()-based in6_selectif() which is
capable of returning interface only, without MTU/NHOP/L2
calculations
- full-blown fib6_selectroute() with cached route/multipath/
MTU/L2
* Stop using routing table for link-local address lookups
* Add in6_ifawithifp_lla() to make for-us check faster for link-local
* Add in6_splitscope / in6_setllascope for faster embed/deembed scopes

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# da1304cb 02-Nov-2014 Hiroki Sato <hrs@FreeBSD.org>

Fix a bug which prevented ND6_IFF_IFDISABLED flag from clearing when
the newly-added IPv6 address was /128.

PR: 188032


# c56173a6 27-Oct-2014 Andrey V. Elsukov <ae@FreeBSD.org>

Do not automatically install routes to link-local and interface-local multicast
addresses.

Obtained from: Yandex LLC
Sponsored by: Yandex LLC


# 8e4bdfa2 27-Oct-2014 Andrey V. Elsukov <ae@FreeBSD.org>

Remove unused function.

Sponsored by: Yandex LLC


# 1ce4b357 04-Oct-2014 Alexander V. Chernikov <melifaro@FreeBSD.org>

Sync to HEAD@r272516.


# 4e27d36d 17-Sep-2014 Neel Natu <neel@FreeBSD.org>

IFC @r271694


# 343e440f 11-Sep-2014 Andrey V. Elsukov <ae@FreeBSD.org>

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
Spon

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

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# 246e7a2b 02-Sep-2014 Neel Natu <neel@FreeBSD.org>

IFC @r269962

Submitted by: Anish Gupta (akgupt3@gmail.com)


# 832fd780 23-Aug-2014 Alexander V. Chernikov <melifaro@FreeBSD.org>

Sync to HEAD@r270409.


# 5fc26322 22-Aug-2014 Mark Johnston <markj@FreeBSD.org>

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 begi

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

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# 1b833d53 13-Aug-2014 Alexander V. Chernikov <melifaro@FreeBSD.org>

Sync to HEAD@r269943.


# 9753faf5 29-Jul-2014 Gleb Smirnoff <glebius@FreeBSD.org>

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


Revision tags: release/9.3.0
# 6cec9cad 03-Jun-2014 Peter Grehan <grehan@FreeBSD.org>

MFC @ r266724

An SVM update will follow this.


# 3b8f0845 28-Apr-2014 Simon J. Gerraty <sjg@FreeBSD.org>

Merge head


# 84e51a1b 23-Apr-2014 Alan Somers <asomers@FreeBSD.org>

IFC @264767


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