ethtool: add ethtool_rx_flow_spec to flow_rule structure translator

This patch adds a function to translate the ethtool_rx_flow_spec
structure to the flow_rule representation.

This allows us to reuse code from the driver side given that both flower
and ethtool_rx_flow interfaces use the same representation.

This patch also includes support for the flow type flags FLOW_EXT,
FLOW_MAC_EXT and FLOW_RSS.

The ethtool_rx_flow_spec_input wrapper structure is used to convey the
rss_context field, that is away from the ethtool_rx_flow_spec structure,
and the ethtool_rx_flow_spec structure.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 15 insertions, 0 deletions

diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index afd9596ce636..19a8de5326fb 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -400,4 +400,19 @@ struct ethtool_ops {
         void    (*get_ethtool_phy_stats)(struct net_device *,
                                          struct ethtool_stats *, u64 *);
 };
+
+struct ethtool_rx_flow_rule {
+        struct flow_rule        *rule;
+        unsigned long           priv[0];
+};
+
+struct ethtool_rx_flow_spec_input {
+        const struct ethtool_rx_flow_spec       *fs;
+        u32                                     rss_ctx;
+};
+
+struct ethtool_rx_flow_rule *
+ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input);
+void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *rule);
+
 #endif /* _LINUX_ETHTOOL_H */