For tuntap interfaces, return a TunTap Interface instead of
a Generic link when retrieving the interface.
Use netlink extended attributes to populate the Link attributes
for the tuntap link.
In case of older tun driver which does not provide these
attributes, use sysfs to retrieve these attributes.
This commit also adds Owner and Group attributes for the TunTap
Link.
Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
XFRM interfaces are available in Linux Kernel 4.19+
When an IF_ID is applied to a XFRM policy and state, the corresponding
traffic will be sent through the virtual interface with the same IF_ID.
Currently each call to Receive() allocates 64K buffer on the heap
for the data to receive from a netlink socket. This is rather costly
considering that in most cases only fraction of this memory is actually
needed.
A quick fix is to make sure that the large buffer does not "escape" -
i.e. that it is sufficient to have it allocated on the stack.
Then only the prefix of the buffer that was actually used
is copied to the heap.
Fix for issue: #379
Signed-off-by: Milan Lenco <milan.lenco@pantheon.tech>
chg: addtl comment and made minor logic optimization as disscussed in PR #296
chg: flipped Persist to NonPersist
chg: comments, only unpersist tuntap if flag is set
chg: tuntap persist optional, allow empty intfc name
chg: added conditional build
Signed-off-by: Ralph Schmieder <ralph.schmieder@gmail.com>
Add support for setting InfiniBand Node and Port GUID address
configuration of a VF when InfiniBand HCA are used with SR-IOV mode.
Signed-off-by: Parav Pandit <parav@mellanox.com>
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>
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>
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.
On newer linux kernels (4.12), netlink rejects a request to set an XDP
program with flags set to 0. Instead, flags need to not be specified if they
are 0.
Add support for creating and managing gre tunnels.
This is equivalent to
Point to Point:
ip tunnel add tun4 mode gre local 192.0.2.1 remote 203.0.113.6 key 123
Point to Multipoint:
ip tunnel add tun8 mode gre local 192.0.2.1 key 1234
Signed-off-by: Manohar Castelino <manohar.r.castelino@intel.com>
Corrected function signature to have correct name LinkSetVfTrust
instead of LinkSetTrust.
This aligns with code comment and rest of the other VF functions.
Signed-off-by: Parav Pandit <parav@mellanox.com>
Add support for setting trust state of a VF. This allows restricting
certain operations on VF when its untrusted such as disabling
promiscuous mode.
Signed-off-by: Parav Pandit <parav@mellanox.com>
Add bond parameters corresponding to:
* IFLA_BOND_AD_ACTOR_SYS_PRIO
* IFLA_BOND_AD_USER_PORT_KEY
* IFLA_BOND_AD_ACTOR_SYSTEM
* IFLA_BOND_TLB_DYNAMIC_LB
These are available in new(ish) kernels.
A new error type LinkNotFoundError is returned instead
of the default error type to facilitate better error
handling by downstream consumers of this package
