ethtool: Make more commands available to unprivileged processes

'Get' commands should generally not require CAP_NET_ADMIN, with
the exception of those that expose internal state.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/ethtool.c

@@ -1443,6 +1443,7 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
 	case ETHTOOL_GSET:
 	case ETHTOOL_GDRVINFO:
 	case ETHTOOL_GMSGLVL:
+	case ETHTOOL_GLINK:
 	case ETHTOOL_GCOALESCE:
 	case ETHTOOL_GRINGPARAM:
 	case ETHTOOL_GPAUSEPARAM:
@@ -1451,6 +1452,7 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
 	case ETHTOOL_GSG:
 	case ETHTOOL_GSSET_INFO:
 	case ETHTOOL_GSTRINGS:
+	case ETHTOOL_GSTATS:
 	case ETHTOOL_GTSO:
 	case ETHTOOL_GPERMADDR:
 	case ETHTOOL_GUFO:
@@ -1463,8 +1465,11 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
 	case ETHTOOL_GRXCLSRLCNT:
 	case ETHTOOL_GRXCLSRULE:
 	case ETHTOOL_GRXCLSRLALL:
+	case ETHTOOL_GRXFHINDIR:
 	case ETHTOOL_GFEATURES:
+	case ETHTOOL_GCHANNELS:
 	case ETHTOOL_GET_TS_INFO:
+	case ETHTOOL_GEEE:
 		break;
 	default:
 		if (!capable(CAP_NET_ADMIN))