sfc: Implement ethtool reset operation

Refactor efx_reset_down() and efx_reset_up() accordingly.

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

1 files changed, 30 insertions, 0 deletions

diff --git a/drivers/net/sfc/ethtool.c b/drivers/net/sfc/ethtool.c
index b4c6ea1b9c0..29aa83c2a0d 100644
--- a/drivers/net/sfc/ethtool.c
+++ b/drivers/net/sfc/ethtool.c
@@ -754,6 +754,35 @@ static int efx_ethtool_set_wol(struct net_device *net_dev,
         return efx->type->set_wol(efx, wol->wolopts);
 }
 
+extern int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
+{
+        struct efx_nic *efx = netdev_priv(net_dev);
+        enum reset_type method;
+        enum {
+                ETH_RESET_EFX_INVISIBLE = (ETH_RESET_DMA | ETH_RESET_FILTER |
+                                           ETH_RESET_OFFLOAD | ETH_RESET_MAC)
+        };
+
+        /* Check for minimal reset flags */
+        if ((*flags & ETH_RESET_EFX_INVISIBLE) != ETH_RESET_EFX_INVISIBLE)
+                return -EINVAL;
+        *flags ^= ETH_RESET_EFX_INVISIBLE;
+        method = RESET_TYPE_INVISIBLE;
+
+        if (*flags & ETH_RESET_PHY) {
+                *flags ^= ETH_RESET_PHY;
+                method = RESET_TYPE_ALL;
+        }
+
+        if ((*flags & efx->type->reset_world_flags) ==
+            efx->type->reset_world_flags) {
+                *flags ^= efx->type->reset_world_flags;
+                method = RESET_TYPE_WORLD;
+        }
+
+        return efx_reset(efx, method);
+}
+
 const struct ethtool_ops efx_ethtool_ops = {
         .get_settings           = efx_ethtool_get_settings,
         .set_settings           = efx_ethtool_set_settings,
@@ -784,4 +813,5 @@ const struct ethtool_ops efx_ethtool_ops = {
         .get_ethtool_stats      = efx_ethtool_get_stats,
         .get_wol                = efx_ethtool_get_wol,
         .set_wol                = efx_ethtool_set_wol,
+        .reset                  = efx_ethtool_reset,
 };