system-linux: VXLAN: add options to enable and disable UDP checksums

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>

3 files changed, 15 insertions, 0 deletions

diff --git a/system-linux.c b/system-linux.c
index 32d6ffc..0277886 100644
--- a/system-linux.c
+++ b/system-linux.c
@@ -2841,6 +2841,17 @@ static int system_add_vxlan(const char *name, const unsigned int link, struct bl
 	}
 	nla_put_u16(msg, IFLA_VXLAN_PORT, htons(port));
 
+	if ((cur = tb_data[VXLAN_DATA_ATTR_RXCSUM])) {
+		bool rxcsum = blobmsg_get_bool(cur);
+		nla_put_u8(msg, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, !rxcsum);
+	}
+
+	if ((cur = tb_data[VXLAN_DATA_ATTR_TXCSUM])) {
+		bool txcsum = blobmsg_get_bool(cur);
+		nla_put_u8(msg, IFLA_VXLAN_UDP_CSUM, txcsum);
+		nla_put_u8(msg, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, !txcsum);
+	}
+
 	if ((cur = tb[TUNNEL_ATTR_TOS])) {
 		char *str = blobmsg_get_string(cur);
 		unsigned tos = 1;
diff --git a/system.c b/system.c
index 5555272..e236e96 100644
--- a/system.c
+++ b/system.c
@@ -36,6 +36,8 @@ static const struct blobmsg_policy vxlan_data_attrs[__VXLAN_DATA_ATTR_MAX] = {
 	[VXLAN_DATA_ATTR_ID] = { .name = "id", .type = BLOBMSG_TYPE_INT32 },
 	[VXLAN_DATA_ATTR_PORT] = { .name = "port", .type = BLOBMSG_TYPE_INT32 },
 	[VXLAN_DATA_ATTR_MACADDR] = { .name = "macaddr", .type = BLOBMSG_TYPE_STRING },
+	[VXLAN_DATA_ATTR_RXCSUM] = { .name = "rxcsum", .type = BLOBMSG_TYPE_BOOL },
+	[VXLAN_DATA_ATTR_TXCSUM] = { .name = "txcsum", .type = BLOBMSG_TYPE_BOOL },
 };
 
 const struct uci_blob_param_list vxlan_data_attr_list = {
diff --git a/system.h b/system.h
index 61c72c2..371a524 100644
--- a/system.h
+++ b/system.h
@@ -41,6 +41,8 @@ enum vxlan_data {
 	VXLAN_DATA_ATTR_ID,
 	VXLAN_DATA_ATTR_PORT,
 	VXLAN_DATA_ATTR_MACADDR,
+	VXLAN_DATA_ATTR_RXCSUM,
+	VXLAN_DATA_ATTR_TXCSUM,
 	__VXLAN_DATA_ATTR_MAX
 };