platform/ethtool: add code to get/set offload features via ethtool

Also, add two more features "tx-tcp-segmentation" and
"tx-tcp6-segmentation". There are two reasons for that:

 - systemd-networkd supports setting these two features,
   so lets support them too (apparently they are important
   enough for networkd).

 - these two features are already implicitly covered by "tso".
   Like for the "ethtool" program, "tso" is an alias for several
   actual features. By adding two features that are already
   also covered by an alias (which sets multiple kernel names
   at once), we showcase how aliases for the same feature can
   coexist. In particular, note how setting
   "tso on tx-tcp6-segmentation off" will behave as one would
   expect: all 4 tso features covered by the alias are enabled,
   except that particular one.

1 files changed, 13 insertions, 11 deletions

diff --git a/libnm-core/nm-setting-ethtool.h b/libnm-core/nm-setting-ethtool.h
index 763d2691e..10f5651b1 100644
--- a/libnm-core/nm-setting-ethtool.h
+++ b/libnm-core/nm-setting-ethtool.h
@@ -31,17 +31,19 @@ G_BEGIN_DECLS
 
 /*****************************************************************************/
 
-#define NM_ETHTOOL_OPTNAME_FEATURE_GRO                "feature-gro"
-#define NM_ETHTOOL_OPTNAME_FEATURE_GSO                "feature-gso"
-#define NM_ETHTOOL_OPTNAME_FEATURE_LRO                "feature-lro"
-#define NM_ETHTOOL_OPTNAME_FEATURE_NTUPLE             "feature-ntuple"
-#define NM_ETHTOOL_OPTNAME_FEATURE_RX                 "feature-rx"
-#define NM_ETHTOOL_OPTNAME_FEATURE_RXHASH             "feature-rxhash"
-#define NM_ETHTOOL_OPTNAME_FEATURE_RXVLAN             "feature-rxvlan"
-#define NM_ETHTOOL_OPTNAME_FEATURE_SG                 "feature-sg"
-#define NM_ETHTOOL_OPTNAME_FEATURE_TSO                "feature-tso"
-#define NM_ETHTOOL_OPTNAME_FEATURE_TX                 "feature-tx"
-#define NM_ETHTOOL_OPTNAME_FEATURE_TXVLAN             "feature-txvlan"
+#define NM_ETHTOOL_OPTNAME_FEATURE_GRO                     "feature-gro"
+#define NM_ETHTOOL_OPTNAME_FEATURE_GSO                     "feature-gso"
+#define NM_ETHTOOL_OPTNAME_FEATURE_LRO                     "feature-lro"
+#define NM_ETHTOOL_OPTNAME_FEATURE_NTUPLE                  "feature-ntuple"
+#define NM_ETHTOOL_OPTNAME_FEATURE_RX                      "feature-rx"
+#define NM_ETHTOOL_OPTNAME_FEATURE_RXHASH                  "feature-rxhash"
+#define NM_ETHTOOL_OPTNAME_FEATURE_RXVLAN                  "feature-rxvlan"
+#define NM_ETHTOOL_OPTNAME_FEATURE_SG                      "feature-sg"
+#define NM_ETHTOOL_OPTNAME_FEATURE_TSO                     "feature-tso"
+#define NM_ETHTOOL_OPTNAME_FEATURE_TX                      "feature-tx"
+#define NM_ETHTOOL_OPTNAME_FEATURE_TXVLAN                  "feature-txvlan"
+#define NM_ETHTOOL_OPTNAME_FEATURE_TX_TCP6_SEGMENTATION    "feature-tx-tcp6-segmentation"
+#define NM_ETHTOOL_OPTNAME_FEATURE_TX_TCP_SEGMENTATION     "feature-tx-tcp-segmentation"
 
 gboolean nm_ethtool_optname_is_feature (const char *optname);