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 e4527f28375026f80e72a13ad6de120c3dea67ad..e378e61dd1bd7570f91b38fb73ab63ffc275769e 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 6dbb627f1510c1828f2687a17f08db316ff5f8d6..6b7ab7ab87791f0c9e6d0068785412ea7a5adf0a 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 724f9861be11455876045ecd5c02b93c4dcaa417..706e52b69891441b8a0b37338d5de2e93c0af354 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 4614c66fd1e132c4f40cb6ecdba1f157bb842127..3906820afbb31b68649be09b934953696288fbcc 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;