| Commit message (Collapse) | Author | Age | Files | Lines |
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Obtained From: DragonFlyBSD (commit 66e72101cc32272ae370b895ca3d9e3e99c5c3a8)
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This can happen in a short period when a prefix is changed by a rtmsg and a
new interface arrives.
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- Document the -C option.
- Allow rtadvd to be invoked without any interfaces on the command line,
and document that possibility.
MFC after: 1 week
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PR: 168016
Submitted by: Nobuyuki Koganemaru
Approved by: gjb
MFC after: 3 days
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Disussed with: gavin
No objection from: doc
Approved by: joel
MFC after: 3 days
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Reviewed by: brueffer
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clean-up RA messages for shutting down. The RA timers could prevent the rtadvd
daemon from shutting down because ra_output() just ignored !IFF_UP interfaces
and TRANSITIVE->UNCONFIGURED state transition never happened due to it.
Spotted by: kib
Approved by: re (bz)
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- Fix an abnormal termination caused by twice of "rtadvctl disable". (r224303)
- Use poll() to wait for the control message socket instead of a spin loop.
(r224304)
- s/cmsg_/cm_/ to avoid conflict with CMSG_* symbols for struct cmsghdr.
(r224619)
- Ignore an interface that never sent RAs for graceful shut-down. (r224620)
- Refine log messages. (r225148)
- Fix SIGSEGV when receiving RAs that contain RDNSS and/or DNSSL options.
(r225149)
Approved by: re (kib)
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added/removed interfaces in a more consistent manner and reloading the
configuration file.
- Implement burst unsolicited RA sending into the internal RA timer framework
when AdvSendAdvertisements and/or configuration entries are changed as
described in RFC 4861 6.2.4. This fixes issues that make termination of the
rtadvd(8) daemon take very long time.
An interface now has three internal states, UNCONFIGURED, TRANSITIVE, or
CONFIGURED, and the burst unsolicited sending happens in TRANSITIVE.
See rtadvd.h for the details.
- rtadvd(8) now accepts non-existent interfaces as well in the command line.
- Add control socket support and rtadvctl(8) utility to show the RA information
in rtadvd(8). Dumping by SIGUSR1 has been removed in favor of it.
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added/removed interfaces in a more consistent manner and reloading
the configuration file.
- Add initial support for control socket. RA information in the
daemon can be obtained by rtadvctl(8) instead of SIGUSR1 in a similar
manner to ifconfig(8). The information dump has been removed in favor of it.
(reload the configuration file)
# rtadvctl reload
(show RA messages being sent on each interfaces)
# rtadvctl show
em0: flags=<UP,CONFIGURED,PERSIST> status=<RA_SEND> mtu 1280
DefaultLifetime: 30m
MinAdvInterval/MaxAdvInterval: 3m20s/3m20s
AdvLinkMTU: <none>, Flags: O, Preference: medium
ReachableTime: 0s, RetransTimer: 0s, CurHopLimit: 64
AdvIfPrefixes: yes
(show RA messages being sent only on em0)
# rtadvctl show em0
(rtadvctl -v show provides additional information)
# rtadvctl -v show em0
em0: flags=<UP,CONFIGURED,PERSIST> status=<RA_SEND> mtu 1280
DefaultLifetime: 30m
MinAdvInterval/MaxAdvInterval: 3m20s/3m20s
AdvLinkMTU: <none>, Flags: O, Preference: medium
ReachableTime: 0s, RetransTimer: 0s, CurHopLimit: 64
AdvIfPrefixes: yes
Prefixes (1):
2001:db8:1::/64 (CONFIG, vltime=30d, pltime=7d, flags=LA)
RDNSS entries:
2001:db8:1::128 (ltime=2m40s)
(stop rtadvd)
# rtadvctl shutdown
A remaining issue when reloading the configuration file is that
during that period rtadvd cannot communicate with rtadvctl due to some
additional RA sending for graceful shutdown. This will be fixed later.
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- Fix WARNS.
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IFF_ND6_ACCEPT_RTADV, and net.inet6.ip6.forwarding.
ra_output:
(lifetime == 0) = output
(lifetime != 0 && (ACCEPT_RTADV || !ip6.forwarding) = no output
ra_input:
ACCEPT_RTADV = input
!ACCEPT_RTADV = no input
Note that the current implementation sends RAs with zero-lifetime even if
ip6.forwarding == 0. This behavior is derived from KAME and different from
RFC 4861.
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interface addition/removal via RTM_IFANNOUNCE message and update the internal
structure.
TO BE FIXED:
The advertising interface list still depends on the command line argument.
The configuration file cannot be reloaded.
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interfaces, not in the routing table actually.
PR: bin/152458
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prefixes from the kernel's routing table. A rtadvd.conf with "noonlinkprefix"
+ no "addr" generates an RA message with no prefix information option.
PR: bin/152458
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made the logic behind them unnecessarily complicated. This change is
a preparation to add support of dynamically-added/removed interfaces and the
link status changes in a more reliable way. Changes include:
- Use queue(3) for linked-list manipulation.
- Use consistent variable names.
- Use (AF_INET6, s, d, sizeof(d)) instead of (AF_INET6, s, a, INET6_ADDRSTRLEN)
for inet_ntop().
- style(9) fixes.
No functional change in this commit.
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- Add link-local scope check for received RA messages. RFC 4861 Section 6.1.2
requires this.
- Refer RFC 4861 instead of obsoleted RFC 2461.
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- Use IFNAMSIZ for an interface name.
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- Fix 8-octet boundary calculation. Extra 8 octets were added when it was
already on an 8-octet boundary.
- Typos and style(9) fixes.
Submitted by: bz
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no '\0' in the search list and/or invalid length field.
- NI_MAXHOST is defined including \0.
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Each label can have 63 octets at most, and the length of whole domain name
is limited to NI_MAXHOST.
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- Style(9).
- Define sin6_{linklocal,sitelocal}_all{nodes,routers} vars consistently.
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Options for DNS Configuration) into rtadvd(8) and rtsold(8). DNS
information received by rtsold(8) will go to resolv.conf(5) by
resolvconf(8) script. Lifetime handling is not supported at this
moment.
Note: when receiving a link-local scope address rtsold(8) adds a scope
id into addresses in the script arguments based on the received
interface in a representation defined in RFC 4007 (e.g. fe80::1%bge0).
However, there are some shell scripts using printf(1) (including
resolvconf(8)) cannot process it properly because printf(1) can
recognize the character % as special.
Based on work by: J.R. Oldroyd
PR: kern/156259
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- Fix a missing back pointer assignment in struct prefix to struct rainfo
when addr="" is specified. This caused SIGSEGV.
- Insert a prefix element to a tail queue after setting parameters.
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Submitted by: dim
Pointy hat to: hrs
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Options for DNS Configuration) into rtadvd(8) and rtsold(8). DNS
information received by rtsold(8) will go to resolv.conf(5) by
resolvconf(8) script. This is based on work by J.R. Oldroyd (kern/156259)
but revised extensively[1].
- rtadvd(8) now supports "noifprefix" to disable gathering on-link prefixes
from interfaces when no "addr" is specified[2]. An entry in rtadvd.conf
with "noifprefix" + no "addr" generates an RA message with no prefix
information option.
- rtadvd(8) now supports RTM_IFANNOUNCE message to fix crashes when an
interface is added or removed.
- Correct bogus ND_OPT_ROUTE_INFO value to one in RFC 4191.
Reviewed by: bz[1]
PR: kern/156259 [1]
PR: bin/152458 [2]
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PR: bin/152143
Submitted by: Przemyslaw Frasunek (przemyslaw frasunek.com)
Tested by: Przemyslaw Frasunek (przemyslaw frasunek.com)
MFC after: 1 week
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PR: bin/153362
Submitted by: Joe Holden <joe rewt org uk>
MFC after: 1 month
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MFC after: 3 days
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MFC after: 3 days
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This pertains mostly to FILES, HISTORY, EXIT STATUS and AUTHORS sections.
Found by: mdocml lint run
Reviewed by: ru
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values like 0x80 or 0x40 into a uint8_t foo:1 bitfield. This would
result in the bit always being 0. One of these caused a warning for
overflow (one that was 0x80), but the other didn't. They were both
wrong.
This is why I hate code that mixes c struct bitfields and #defines.
The rest of the fields accessed by the program should be audited.
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- convert to .Ex macro
- not bumping a date as this is not a real content change
Approved by: ru [1]
MFC after: 3 days
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OpenBSD does, since modulo is not power of 2.
Obtained from: OpenBSD
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Obtained from: Slava Semushin via NetBSD
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Tested with: cmp(1)
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