[LEDE-DEV] [PATCH netifd 2/2] system-linux: parse vti specific settings as nested json data object

[Hans Dedecker]

Parse vti specific settings ikey and okey as nested json data object.
At the same time remove the now obsolete TUNNEL_ATTR_INFO attribute.

Signed-off-by: Hans Dedecker <dedeckeh at gmail.com>
---
 system-linux.c | 29 ++++++++++++++++-------------
 system.c       | 11 ++++++++++-
 system.h       |  8 +++++++-
 3 files changed, 33 insertions(+), 15 deletions(-)

diff --git a/system-linux.c b/system-linux.c
index b7297fd..471efff 100644
--- a/system-linux.c
+++ b/system-linux.c
@@ -2462,7 +2462,6 @@ static int system_add_vti_tunnel(const char *name, const char *kind,
 	struct nl_msg *nlm;
 	struct ifinfomsg ifi = { .ifi_family = AF_UNSPEC, };
 	struct blob_attr *cur;
-	uint32_t ikey = 0, okey = 0;
 	int ret = 0;
 
 	nlm = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
@@ -2488,14 +2487,6 @@ static int system_add_vti_tunnel(const char *name, const char *kind,
 	if (link)
 		nla_put_u32(nlm, IFLA_VTI_LINK, link);
 
-	if ((cur = tb[TUNNEL_ATTR_INFO]) && (blobmsg_type(cur) == BLOBMSG_TYPE_STRING)) {
-		if (sscanf(blobmsg_get_string(cur), "%u,%u",
-			&ikey, &okey) < 2) {
-			ret = -EINVAL;
-			goto failure;
-		}
-	}
-
 	if (v6) {
 		struct in6_addr in6buf;
 		if ((cur = tb[TUNNEL_ATTR_LOCAL])) {
@@ -2535,11 +2526,23 @@ static int system_add_vti_tunnel(const char *name, const char *kind,
 
 	}
 
-	if (okey)
-		nla_put_u32(nlm, IFLA_VTI_OKEY, htonl(okey));
+	if ((cur = tb[TUNNEL_ATTR_DATA])) {
+		struct blob_attr *tb_data[__VTI_DATA_ATTR_MAX];
+		uint32_t ikey = 0, okey = 0;
 
-	if (ikey)
-		nla_put_u32(nlm, IFLA_VTI_IKEY, htonl(ikey));
+		blobmsg_parse(vti_data_attr_list.params, __VTI_DATA_ATTR_MAX, tb_data,
+			blobmsg_data(cur), blobmsg_len(cur));
+
+		if ((cur = tb_data[VTI_DATA_IKEY])) {
+			if ((ikey = blobmsg_get_u32(cur)))
+				nla_put_u32(nlm, IFLA_VTI_IKEY, htonl(ikey));
+		}
+
+		if ((cur = tb_data[VTI_DATA_OKEY])) {
+			if ((okey = blobmsg_get_u32(cur)))
+				nla_put_u32(nlm, IFLA_VTI_OKEY, htonl(okey));
+		}
+	}
 
 	nla_nest_end(nlm, infodata);
 	nla_nest_end(nlm, linkinfo);
diff --git a/system.c b/system.c
index f899c7b..3d4a979 100644
--- a/system.c
+++ b/system.c
@@ -27,7 +27,6 @@ static const struct blobmsg_policy tunnel_attrs[__TUNNEL_ATTR_MAX] = {
 	[TUNNEL_ATTR_6RD_RELAY_PREFIX] = { .name = "6rd-relay-prefix", .type = BLOBMSG_TYPE_STRING },
 	[TUNNEL_ATTR_LINK] = { .name = "link", .type = BLOBMSG_TYPE_STRING },
 	[TUNNEL_ATTR_FMRS] = { .name = "fmrs", .type = BLOBMSG_TYPE_ARRAY },
-	[TUNNEL_ATTR_INFO] = { .name = "info", .type = BLOBMSG_TYPE_STRING },
 	[TUNNEL_ATTR_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
 };
 
@@ -61,6 +60,16 @@ const struct uci_blob_param_list gre_data_attr_list = {
 	.params = gre_data_attrs,
 };
 
+static const struct blobmsg_policy vti_data_attrs[__VTI_DATA_ATTR_MAX] = {
+	[VTI_DATA_IKEY] = { .name = "ikey", .type = BLOBMSG_TYPE_INT32 },
+	[VTI_DATA_OKEY] = { .name = "okey", .type = BLOBMSG_TYPE_INT32 },
+};
+
+const struct uci_blob_param_list vti_data_attr_list = {
+	.n_params = __VTI_DATA_ATTR_MAX,
+	.params = vti_data_attrs,
+};
+
 void system_fd_set_cloexec(int fd)
 {
 #ifdef FD_CLOEXEC
diff --git a/system.h b/system.h
index 14b1e53..9995fa9 100644
--- a/system.h
+++ b/system.h
@@ -34,7 +34,6 @@ enum tunnel_param {
 	TUNNEL_ATTR_6RD_RELAY_PREFIX,
 	TUNNEL_ATTR_LINK,
 	TUNNEL_ATTR_FMRS,
-	TUNNEL_ATTR_INFO,
 	TUNNEL_ATTR_DATA,
 	__TUNNEL_ATTR_MAX
 };
@@ -58,8 +57,15 @@ enum gre_data {
 	__GRE_DATA_ATTR_MAX
 };
 
+enum vti_data {
+	VTI_DATA_IKEY,
+	VTI_DATA_OKEY,
+	__VTI_DATA_ATTR_MAX
+};
+
 extern const struct uci_blob_param_list vxlan_data_attr_list;
 extern const struct uci_blob_param_list gre_data_attr_list;
+extern const struct uci_blob_param_list vti_data_attr_list;
 
 enum bridge_opt {
 	/* stp and forward delay always set */
-- 
2.12.0