* Add netlink definitions for extra IFLAs
The relevant IFLA_* are defined in the kernel but not in the syscall
package.
* Parameterize the return value of loadSimpleBpf
Allow the return value of the bpf program created by loadSimpleBpf to
be specified by the caller. Before this, the value was hardcoded to 1.
* Add support for a new IFLA that enables using a bpf program as a
filter early in the driver path of some NICs.
* Add a test for set/get of an xdp program. Since currently, the XDP
IFLA is optional, check that the hardware supports it before trying to
set the field.
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
Current U32 filter only supports redirect action, but the U32 can
support a lot more. Refactor a bit the action generating/parsing logic
to be more generic and add BPF action support.
When creating a U32 filter, one can supply an array of Actions, which
will be executed by the U32 filter in order:
* The new MirredAction implements the same functionality as RedirIndex
field in the U32 filter, with that static field kept in the struct for
backwards compatibility.
* A new BpfAction type is added which allows a program with an open bpf
file descriptor (implementation is out of scope of this patch) to be
added as well.
Add a test for the above use case which includes one of each type of
action.
Sargun Dhillon
Christopher Koch
Brenden Blanco
Brenden Blanco