networkd: remote checksum offload for vxlan (#4110)

This patch adds support to remote checksum checksum offload to VXLAN.
This patch adds RemoteCheckSumTx and RemoteCheckSumRx vxlan configuration
to enable remote checksum offload for transmit and receive on the VXLAN tunnel.

diff --git a/man/systemd.netdev.xml b/man/systemd.netdev.xml
index e4527f2..e378e61 100644 (file)
--- a/man/systemd.netdev.xml
+++ b/man/systemd.netdev.xml
@@ -554,6 +554,18 @@
           <para>A boolean. When true, receiving zero checksums in VXLAN/IPv6 is turned on.</para>
         </listitem>
       </varlistentry>
+      <varlistentry>
+        <term><varname>RemoteCheckSumTx=</varname></term>
+        <listitem>
+          <para>A boolean. When true, remote transmit checksum offload of VXLAN is turned on.</para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term><varname>RemoteCheckSumRx=</varname></term>
+        <listitem>
+          <para>A boolean. When true, remote receive checksum offload in VXLAN is turned on.</para>
+        </listitem>
+      </varlistentry>
     <varlistentry>
       <term><varname>GroupPolicyExtension=</varname></term>
       <listitem>

diff --git a/src/network/networkd-netdev-gperf.gperf b/src/network/networkd-netdev-gperf.gperf
index 6dbb627..6b7ab7a 100644 (file)
--- a/src/network/networkd-netdev-gperf.gperf
+++ b/src/network/networkd-netdev-gperf.gperf
@@ -65,6 +65,8 @@ VXLAN.RouteShortCircuit,     config_parse_bool,                  0,
 VXLAN.UDPCheckSum,           config_parse_bool,                  0,                             offsetof(VxLan, udpcsum)
 VXLAN.UDP6ZeroCheckSumRx,    config_parse_bool,                  0,                             offsetof(VxLan, udp6zerocsumrx)
 VXLAN.UDP6ZeroCheckSumTx,    config_parse_bool,                  0,                             offsetof(VxLan, udp6zerocsumtx)
+VXLAN.RemoteCheckSumTx,      config_parse_bool,                  0,                             offsetof(VxLan, remote_csum_tx)
+VXLAN.RemoteCheckSumRx,      config_parse_bool,                  0,                             offsetof(VxLan, remote_csum_rx)
 VXLAN.FDBAgeingSec,          config_parse_sec,                   0,                             offsetof(VxLan, fdb_ageing)
 VXLAN.GroupPolicyExtension,  config_parse_bool,                  0,                             offsetof(VxLan, group_policy)
 VXLAN.MaximumFDBEntries,     config_parse_unsigned,              0,                             offsetof(VxLan, max_fdb)

diff --git a/src/network/networkd-netdev-vxlan.c b/src/network/networkd-netdev-vxlan.c
index 724f986..706e52b 100644 (file)
--- a/src/network/networkd-netdev-vxlan.c
+++ b/src/network/networkd-netdev-vxlan.c
@@ -112,6 +112,14 @@ static int netdev_vxlan_fill_message_create(NetDev *netdev, Link *link, sd_netli
         if (r < 0)
                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_UDP_ZERO_CSUM6_RX attribute: %m");
 
+        r = sd_netlink_message_append_u8(m, IFLA_VXLAN_REMCSUM_TX, v->remote_csum_tx);
+        if (r < 0)
+                return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_REMCSUM_TX attribute: %m");
+
+        r = sd_netlink_message_append_u8(m, IFLA_VXLAN_REMCSUM_RX, v->remote_csum_rx);
+        if (r < 0)
+                return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_REMCSUM_RX attribute: %m");
+
         r = sd_netlink_message_append_u16(m, IFLA_VXLAN_PORT, htobe16(v->dest_port));
         if (r < 0)
                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_PORT attribute: %m");

diff --git a/src/network/networkd-netdev-vxlan.h b/src/network/networkd-netdev-vxlan.h
index 4614c66..3906820 100644 (file)
--- a/src/network/networkd-netdev-vxlan.h
+++ b/src/network/networkd-netdev-vxlan.h
@@ -50,6 +50,8 @@ struct VxLan {
         bool udpcsum;
         bool udp6zerocsumtx;
         bool udp6zerocsumrx;
+        bool remote_csum_tx;
+        bool remote_csum_rx;
         bool group_policy;
 
         struct ifla_vxlan_port_range port_range;