The IFLA_* constants in in x/sys/unix were updated to Linux 4.15 in
golang/sys@88d2dcc510, so use these instead of locally duplicating
them.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Currently, Validity and preference information values are ignored in
addrHandle. This adds them to the netlink message when they are passed
by the caller
Allow the caller to specify the desired link index at link creation.
This is equivalent to
ip link add link eth0 name testmacvtap index 1000 type macvtap
ip link add dummy1 index 1001 type dummy
Signed-off-by: Manohar Castelino <manohar.r.castelino@intel.com>
When receiving a lot of route changes (10,000 routes are enough), the
default receive buffer size (value of
`/proc/sys/net/core/rmem_default`) is too small and we get a `ENOBUF`
error. A user may want to increase the buffer size up to the value of
`/proc/sys/net/core/rmem_max` (by default, this is the same value). A
`SetSocketReceiveBufferSize()` function is provided to this
destination.
Possible improvements:
1. automatically increase receive buffer size in higher level
functions until we hit a maximum (get an error and/or the current
value is smaller than expected)
2. accept a "force" argument to use `SO_RCVBUFFORCE` to increase the
value over `rmem_max` value
This test spawns a go routine that subscribe for some
events while the main thread will close the socket.
The go routine will returns after 5s when the timetout
on the recv fires and the fd is actually == -1
Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
If the socket is closed the recv that are waiting for messages
are not woken up. The result especially for Subscribe socket is
most likely a go routine leak.
This commit introduces a method to set the timeout
Signed-off-by: Flavio Crisciani <flavio.crisciani@docker.com>
For link, address, route, add a `WithOptions` variant to the
`*Subscribe()` function to specify a namespace and an error
callback. Those options can be extended in the future without adding
more functions. For example, it could be possible to subscribe only
for a given family by adding a `Family` member to the appropriate
struct.
As a minor change, the private function is always suffixed by `At`,
since it was the case for route and raw netlink functions (but not for
address and link).
When a fatal error happens in a `*Subscribe*()` function, the error
was not available to the user. We add a callback function that will be
invoked when such an error happens.
This also modifies the behavior of `AddrSubscribe*()` function to turn
parse errors into fatal errors, as it happens with the other functions.
