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Allow carp(4) to use the VRRPv3 protocol (RFC 5798). We can distinguish carp and
VRRP based on the protocol version number (carp is 2, VRRPv3 is 3), and support
both from the carp(4) code.
Reviewed by: glebius
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D44774
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Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/
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There were two issues with the carp key configuration in the new netlink
code.
The first is that userspace failed to actually pass the CARP_NL_KEY
attribute to the kernel, so a key was never set.
The second issue is that snl_attr_get_string() returns a pointer to the
string inside the netlink message. It does not copy the string to the
target buffer. That's somewhat inconvenient to work with in libifconfig
where we have a static buffer for the key.
Introduce snl_attr_copy_string() which can copy a string to a target
buffer and uses the 'arg' parameter to pass the buffer size, so it
doesn't accidentally exceed the available space.
Reviewed by: melifaro
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D39874
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If one interface has a carp address configured on it ifconfig would show
this information on all interfaces.
That's because the kernel does (as one would expect) not return any carp
data for interface without carp configuration. However, this wound up
not overwriting the data passed in by the caller, and leaving the (now
stale) information in pace. As a result the caller thought carp was
configured on the interface.
Zero out the input structure before making the call to the kernel, so
that we correctly return 0 if there is no carp configuration on the
queried interface.
Sponsored by: Rubicon Communications, LLC ("Netgate")
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Get/set commands can now choose to provide the interface name rather
than the interface index. This allows userspace to avoid a call to
if_nametoindex().
Suggested by: melifaro
Reviewed by: melifaro
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D39359
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Allow users to configure the address to send carp messages to. This
allows carp to be used in unicast mode, which is useful in certain
virtual configurations (e.g. AWS, VMWare ESXi, ...)
Reviewed by: melifaro
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D38940
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Allow carp configuration information to be supplied and retrieved via
netlink.
Reviewed by: melifaro
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D39048
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Added the ability to:
* Create virtual interfaces
* Create vlan interfaces
* Get interface fib
* Get interface groups
* Get interface status
* Get nd6 info
* Get media status
* Get additional ifaddr info in a convenient struct
* Get vhids
* Get carp info
* Get lagg and laggport status
* Iterate over all interfaces and ifaddrs
And add more examples, too.
Note that this is a backwards-incompatible change. But that's ok, because it's
a private library.
MFC after: 3 weeks
Sponsored by: Spectra Logic Corp
Differential Revision: https://reviews.freebsd.org/D14463
Notes:
svn path=/head/; revision=329853
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