Following this commit, "struct odp_flow_stats" is only used in
Linux-specific parts of OVS userspace code. This allows the actual Linux
datapath interface to evolve more freely.
Reviewed by Justin Pettit.
Following this commit, "struct odp_flow" and related data structures are
only used in Linux-specific parts of OVS userspace code. This allows the
actual Linux datapath interface to evolve more freely.
Reviewed by Justin Pettit.
This is cleaner than parsing "odp_port"s directly. It takes one step
toward eliminating use of odp_port from any userspace code outside of
lib/netdev-vport.c and lib/dpif-linux.c.
Reviewed by Justin Pettit.
One of the goals for Open vSwitch is to decouple kernel and userspace
software, so that either one can be upgraded or rolled back independent of
the other. To do this in full generality, it must be possible to change
the kernel's idea of the flow key separately from the userspace version.
In turn, that means that flow keys must become variable-length. This
commit makes that change using Netlink attribute sequences.
This commit does not actually make userspace flexible enough to handle
changes in the kernel flow key structure, because userspace doesn't yet
have enough information to do that intelligently. Upcoming commits will
fix that.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
When "ovs-dpctl show" is run, return additional information about the
port. For example, tunnel ports will print the remote_ip, local_ip, and
in_key when defined.
In the medium term, we plan to migrate the datapath to use Netlink as its
communication channel. In the short term, we need to be able to have
actions with 64-bit arguments but "struct odp_action" only has room for
48 bits. So this patch shifts to variable-length arguments using Netlink
attributes, which starts in on the Netlink transition and makes 64-bit
arguments possible at the same time.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
The kernel supports more than a single page of actions now, so userspace
should be able to take advantage of this.
Upcoming commits will completely replace this data structure but this
commit makes the bug fix clear and is suitable for cherry-picking to
long-term support branches.
The "struct odp_flow_key" used in the kernel datapath is conceptually
separate from the "flow_t" used in userspace, but until now we have
used the latter as a typedef for the former for convenience. This commit
separates them. This makes it possible in upcoming commits to change
them independently.
This is cross-ported from the "wdp" branch, which has had it for months.
