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tools: ynl: generate code for ovs families

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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: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20240202004926.447803-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2024-02-01 16:49:25 -08:00
parent 8f109e91b8
commit 7c59c9c8f2
3 changed files with 62 additions and 1 deletions
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2
tools/net/ynl/generated/Makefile
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@ -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})

1
tools/net/ynl/samples/.gitignore vendored
View File

@ -1,4 +1,5 @@
ethtool
devlink
netdev
ovs
page-pool

60
tools/net/ynl/samples/ovs.c Normal file
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@ -0,0 +1,60 @@
// 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;
}