Commit 7c59c9c8 authored by Jakub Kicinski's avatar Jakub Kicinski
Browse files

tools: ynl: generate code for ovs families 



Add ovs_flow, ovs_vport and ovs_datapath to the families supported
in C. ovs-flow has some circular nesting which is fun to deal with,
but the necessary support has been added already in the previous
release cycle.

Add a sample that proves that dealing with fixed headers does
actually work correctly.

Reviewed-by: default avatarJiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20240202004926.447803-3-kuba@kernel.org


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 8f109e91

tools/net/ynl/generated/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -14,7 +14,7 @@ YNL_GEN_ARG_ethtool:=--user-header linux/ethtool_netlink.h \ 


TOOL:=../ynl-gen-c.py



GENS:=ethtool devlink dpll handshake fou mptcp_pm netdev nfsd

GENS:=ethtool devlink dpll handshake fou mptcp_pm netdev nfsd ovs_datapath ovs_vport ovs_flow

SRCS=$(patsubst %,%-user.c,${GENS})

HDRS=$(patsubst %,%-user.h,${GENS})

OBJS=$(patsubst %,%-user.o,${GENS})

tools/net/ynl/samples/.gitignore

+1 −0
Original line number Diff line number Diff line 
ethtool

devlink

netdev

ovs

page-pool
 
 No newline at end of file

tools/net/ynl/samples/ovs.c

0 → 100644
+60 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

#include <stdio.h>

#include <string.h>



#include <ynl.h>



#include "ovs_datapath-user.h"



int main(int argc, char **argv)

{

	struct ynl_sock *ys;

	int err;



	ys = ynl_sock_create(&ynl_ovs_datapath_family, NULL);

	if (!ys)

		return 1;



	if (argc > 1) {

		struct ovs_datapath_new_req *req;



		req = ovs_datapath_new_req_alloc();

		if (!req)

			goto err_close;



		ovs_datapath_new_req_set_upcall_pid(req, 1);

		ovs_datapath_new_req_set_name(req, argv[1]);



		err = ovs_datapath_new(ys, req);

		ovs_datapath_new_req_free(req);

		if (err)

			goto err_close;

	} else {

		struct ovs_datapath_get_req_dump *req;

		struct ovs_datapath_get_list *dps;



		printf("Dump:\n");

		req = ovs_datapath_get_req_dump_alloc();



		dps = ovs_datapath_get_dump(ys, req);

		ovs_datapath_get_req_dump_free(req);

		if (!dps)

			goto err_close;



		ynl_dump_foreach(dps, dp) {

			printf("  %s(%d): pid:%u cache:%u\n",

			       dp->name, dp->_hdr.dp_ifindex,

			       dp->upcall_pid, dp->masks_cache_size);

		}

		ovs_datapath_get_list_free(dps);

	}



	ynl_sock_destroy(ys);



	return 0;



err_close:

	fprintf(stderr, "YNL (%d): %s\n", ys->err.code, ys->err.msg);

	ynl_sock_destroy(ys);

	return 2;

}