net/ethtool: Add current supported tunable options

Add strings array of the current supported tunable options.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Reviewed-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index 0594933..cd67aec 100644 (file)
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -215,6 +215,11 @@ enum tunable_id {
        ETHTOOL_ID_UNSPEC,
        ETHTOOL_RX_COPYBREAK,
        ETHTOOL_TX_COPYBREAK,
+       /*
+        * Add your fresh new tubale attribute above and remember to update
+        * tunable_strings[] in net/core/ethtool.c
+        */
+       __ETHTOOL_TUNABLE_COUNT,
 };
 
 enum tunable_type_id {
@@ -545,6 +550,7 @@ enum ethtool_stringset {
        ETH_SS_NTUPLE_FILTERS,
        ETH_SS_FEATURES,
        ETH_SS_RSS_HASH_FUNCS,
+       ETH_SS_TUNABLES,
 };
 
 /**

diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index eb0c3ac..b495ab1 100644 (file)
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -106,6 +106,13 @@ rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
        [ETH_RSS_HASH_XOR_BIT] =        "xor",
 };
 
+static const char
+tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
+       [ETHTOOL_ID_UNSPEC]     = "Unspec",
+       [ETHTOOL_RX_COPYBREAK]  = "rx-copybreak",
+       [ETHTOOL_TX_COPYBREAK]  = "tx-copybreak",
+};
+
 static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
 {
        struct ethtool_gfeatures cmd = {
@@ -194,6 +201,9 @@ static int __ethtool_get_sset_count(struct net_device *dev, int sset)
        if (sset == ETH_SS_RSS_HASH_FUNCS)
                return ARRAY_SIZE(rss_hash_func_strings);
 
+       if (sset == ETH_SS_TUNABLES)
+               return ARRAY_SIZE(tunable_strings);
+
        if (ops->get_sset_count && ops->get_strings)
                return ops->get_sset_count(dev, sset);
        else
@@ -211,6 +221,8 @@ static void __ethtool_get_strings(struct net_device *dev,
        else if (stringset == ETH_SS_RSS_HASH_FUNCS)
                memcpy(data, rss_hash_func_strings,
                       sizeof(rss_hash_func_strings));
+       else if (stringset == ETH_SS_TUNABLES)
+               memcpy(data, tunable_strings, sizeof(tunable_strings));
        else
                /* ops->get_strings is valid because checked earlier */
                ops->get_strings(dev, stringset, data);