netdev-genl: spec: Extend netdev netlink spec in YAML for NAPI

Add support in netlink spec(netdev.yaml) for napi related information.
Add code generated from the spec.

Signed-off-by: Amritha Nambiar <amritha.nambiar@intel.com>
Reviewed-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Link: https://lore.kernel.org/r/170147333119.5260.7050639053080529108.stgit@anambiarhost.jf.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

2 files changed, 199 insertions, 0 deletions

diff --git a/tools/net/ynl/generated/netdev-user.c b/tools/net/ynl/generated/netdev-user.c
index fbf7e24ade91..906b61554698 100644
--- a/tools/net/ynl/generated/netdev-user.c
+++ b/tools/net/ynl/generated/netdev-user.c
@@ -24,6 +24,7 @@ static const char * const netdev_op_strmap[] = {
 	[NETDEV_CMD_PAGE_POOL_CHANGE_NTF] = "page-pool-change-ntf",
 	[NETDEV_CMD_PAGE_POOL_STATS_GET] = "page-pool-stats-get",
 	[NETDEV_CMD_QUEUE_GET] = "queue-get",
+	[NETDEV_CMD_NAPI_GET] = "napi-get",
 };
 
 const char *netdev_op_str(int op)
@@ -160,6 +161,16 @@ struct ynl_policy_nest netdev_queue_nest = {
 	.table = netdev_queue_policy,
 };
 
+struct ynl_policy_attr netdev_napi_policy[NETDEV_A_NAPI_MAX + 1] = {
+	[NETDEV_A_NAPI_IFINDEX] = { .name = "ifindex", .type = YNL_PT_U32, },
+	[NETDEV_A_NAPI_ID] = { .name = "id", .type = YNL_PT_U32, },
+};
+
+struct ynl_policy_nest netdev_napi_nest = {
+	.max_attr = NETDEV_A_NAPI_MAX,
+	.table = netdev_napi_policy,
+};
+
 /* Common nested types */
 void netdev_page_pool_info_free(struct netdev_page_pool_info *obj)
 {
@@ -770,6 +781,119 @@ free_list:
 	return NULL;
 }
 
+/* ============== NETDEV_CMD_NAPI_GET ============== */
+/* NETDEV_CMD_NAPI_GET - do */
+void netdev_napi_get_req_free(struct netdev_napi_get_req *req)
+{
+	free(req);
+}
+
+void netdev_napi_get_rsp_free(struct netdev_napi_get_rsp *rsp)
+{
+	free(rsp);
+}
+
+int netdev_napi_get_rsp_parse(const struct nlmsghdr *nlh, void *data)
+{
+	struct ynl_parse_arg *yarg = data;
+	struct netdev_napi_get_rsp *dst;
+	const struct nlattr *attr;
+
+	dst = yarg->data;
+
+	mnl_attr_for_each(attr, nlh, sizeof(struct genlmsghdr)) {
+		unsigned int type = mnl_attr_get_type(attr);
+
+		if (type == NETDEV_A_NAPI_ID) {
+			if (ynl_attr_validate(yarg, attr))
+				return MNL_CB_ERROR;
+			dst->_present.id = 1;
+			dst->id = mnl_attr_get_u32(attr);
+		} else if (type == NETDEV_A_NAPI_IFINDEX) {
+			if (ynl_attr_validate(yarg, attr))
+				return MNL_CB_ERROR;
+			dst->_present.ifindex = 1;
+			dst->ifindex = mnl_attr_get_u32(attr);
+		}
+	}
+
+	return MNL_CB_OK;
+}
+
+struct netdev_napi_get_rsp *
+netdev_napi_get(struct ynl_sock *ys, struct netdev_napi_get_req *req)
+{
+	struct ynl_req_state yrs = { .yarg = { .ys = ys, }, };
+	struct netdev_napi_get_rsp *rsp;
+	struct nlmsghdr *nlh;
+	int err;
+
+	nlh = ynl_gemsg_start_req(ys, ys->family_id, NETDEV_CMD_NAPI_GET, 1);
+	ys->req_policy = &netdev_napi_nest;
+	yrs.yarg.rsp_policy = &netdev_napi_nest;
+
+	if (req->_present.id)
+		mnl_attr_put_u32(nlh, NETDEV_A_NAPI_ID, req->id);
+
+	rsp = calloc(1, sizeof(*rsp));
+	yrs.yarg.data = rsp;
+	yrs.cb = netdev_napi_get_rsp_parse;
+	yrs.rsp_cmd = NETDEV_CMD_NAPI_GET;
+
+	err = ynl_exec(ys, nlh, &yrs);
+	if (err < 0)
+		goto err_free;
+
+	return rsp;
+
+err_free:
+	netdev_napi_get_rsp_free(rsp);
+	return NULL;
+}
+
+/* NETDEV_CMD_NAPI_GET - dump */
+void netdev_napi_get_list_free(struct netdev_napi_get_list *rsp)
+{
+	struct netdev_napi_get_list *next = rsp;
+
+	while ((void *)next != YNL_LIST_END) {
+		rsp = next;
+		next = rsp->next;
+
+		free(rsp);
+	}
+}
+
+struct netdev_napi_get_list *
+netdev_napi_get_dump(struct ynl_sock *ys, struct netdev_napi_get_req_dump *req)
+{
+	struct ynl_dump_state yds = {};
+	struct nlmsghdr *nlh;
+	int err;
+
+	yds.ys = ys;
+	yds.alloc_sz = sizeof(struct netdev_napi_get_list);
+	yds.cb = netdev_napi_get_rsp_parse;
+	yds.rsp_cmd = NETDEV_CMD_NAPI_GET;
+	yds.rsp_policy = &netdev_napi_nest;
+
+	nlh = ynl_gemsg_start_dump(ys, ys->family_id, NETDEV_CMD_NAPI_GET, 1);
+	ys->req_policy = &netdev_napi_nest;
+
+	if (req->_present.ifindex)
+		mnl_attr_put_u32(nlh, NETDEV_A_NAPI_IFINDEX, req->ifindex);
+
+	err = ynl_exec_dump(ys, nlh, &yds);
+	if (err < 0)
+		goto free_list;
+
+	return yds.first;
+
+free_list:
+	netdev_napi_get_list_free(yds.first);
+	return NULL;
+}
+
 static const struct ynl_ntf_info netdev_ntf_info[] =  {
 	[NETDEV_CMD_DEV_ADD_NTF] =  {
 		.alloc_sz	= sizeof(struct netdev_dev_get_ntf),
diff --git a/tools/net/ynl/generated/netdev-user.h b/tools/net/ynl/generated/netdev-user.h
index d7daf6df3df0..481c9e45b689 100644
--- a/tools/net/ynl/generated/netdev-user.h
+++ b/tools/net/ynl/generated/netdev-user.h
@@ -360,4 +360,79 @@ struct netdev_queue_get_list *
 netdev_queue_get_dump(struct ynl_sock *ys,
 		      struct netdev_queue_get_req_dump *req);
 
+/* ============== NETDEV_CMD_NAPI_GET ============== */
+/* NETDEV_CMD_NAPI_GET - do */
+struct netdev_napi_get_req {
+	struct {
+		__u32 id:1;
+	} _present;
+
+	__u32 id;
+};
+
+static inline struct netdev_napi_get_req *netdev_napi_get_req_alloc(void)
+{
+	return calloc(1, sizeof(struct netdev_napi_get_req));
+}
+void netdev_napi_get_req_free(struct netdev_napi_get_req *req);
+
+static inline void
+netdev_napi_get_req_set_id(struct netdev_napi_get_req *req, __u32 id)
+{
+	req->_present.id = 1;
+	req->id = id;
+}
+
+struct netdev_napi_get_rsp {
+	struct {
+		__u32 id:1;
+		__u32 ifindex:1;
+	} _present;
+
+	__u32 id;
+	__u32 ifindex;
+};
+
+void netdev_napi_get_rsp_free(struct netdev_napi_get_rsp *rsp);
+
+/*
+ * Get information about NAPI instances configured on the system.
+ */
+struct netdev_napi_get_rsp *
+netdev_napi_get(struct ynl_sock *ys, struct netdev_napi_get_req *req);
+
+/* NETDEV_CMD_NAPI_GET - dump */
+struct netdev_napi_get_req_dump {
+	struct {
+		__u32 ifindex:1;
+	} _present;
+
+	__u32 ifindex;
+};
+
+static inline struct netdev_napi_get_req_dump *
+netdev_napi_get_req_dump_alloc(void)
+{
+	return calloc(1, sizeof(struct netdev_napi_get_req_dump));
+}
+void netdev_napi_get_req_dump_free(struct netdev_napi_get_req_dump *req);
+
+static inline void
+netdev_napi_get_req_dump_set_ifindex(struct netdev_napi_get_req_dump *req,
+				     __u32 ifindex)
+{
+	req->_present.ifindex = 1;
+	req->ifindex = ifindex;
+}
+
+struct netdev_napi_get_list {
+	struct netdev_napi_get_list *next;
+	struct netdev_napi_get_rsp obj __attribute__((aligned(8)));
+};
+
+void netdev_napi_get_list_free(struct netdev_napi_get_list *rsp);
+
+struct netdev_napi_get_list *
+netdev_napi_get_dump(struct ynl_sock *ys, struct netdev_napi_get_req_dump *req);
+
 #endif /* _LINUX_NETDEV_GEN_H */