diff --git a/drivers/net/ethernet/sfc/ef100_ethtool.c b/drivers/net/ethernet/sfc/ef100_ethtool.c index cf55202b3a7b..9659e9d5d789 100644 --- a/drivers/net/ethernet/sfc/ef100_ethtool.c +++ b/drivers/net/ethernet/sfc/ef100_ethtool.c @@ -59,6 +59,7 @@ const struct ethtool_ops ef100_ethtool_ops = { .get_rxfh_indir_size = efx_ethtool_get_rxfh_indir_size, .get_rxfh_key_size = efx_ethtool_get_rxfh_key_size, + .cap_rss_rxnfc_adds = true, .get_rxfh = efx_ethtool_get_rxfh, .set_rxfh = efx_ethtool_set_rxfh, diff --git a/drivers/net/ethernet/sfc/ethtool.c b/drivers/net/ethernet/sfc/ethtool.c index 37c69c8d90b1..52fae4fbf94d 100644 --- a/drivers/net/ethernet/sfc/ethtool.c +++ b/drivers/net/ethernet/sfc/ethtool.c @@ -268,6 +268,7 @@ const struct ethtool_ops efx_ethtool_ops = { .set_rxnfc = efx_ethtool_set_rxnfc, .get_rxfh_indir_size = efx_ethtool_get_rxfh_indir_size, .get_rxfh_key_size = efx_ethtool_get_rxfh_key_size, + .cap_rss_rxnfc_adds = true, .get_rxfh = efx_ethtool_get_rxfh, .set_rxfh = efx_ethtool_set_rxfh, .get_ts_info = efx_ethtool_get_ts_info, diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 325e0778e937..2159fcc24221 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -639,6 +639,9 @@ struct ethtool_rxfh_param { * contexts. * @cap_rss_sym_xor_supported: indicates if the driver supports symmetric-xor * RSS. + * @cap_rss_rxnfc_adds: device supports nonzero ring_cookie in filters with + * %FLOW_RSS flag; the queue ID from the filter is added to the value from + * the indirection table to determine the delivery queue. * @supported_coalesce_params: supported types of interrupt coalescing. * @supported_ring_params: supported ring params. * @get_drvinfo: Report driver/device information. Modern drivers no @@ -819,6 +822,7 @@ struct ethtool_ops { u32 cap_link_lanes_supported:1; u32 cap_rss_ctx_supported:1; u32 cap_rss_sym_xor_supported:1; + u32 cap_rss_rxnfc_adds:1; u32 supported_coalesce_params; u32 supported_ring_params; void (*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *); diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c index 808a9f5860dc..0f92709712ea 100644 --- a/net/ethtool/ioctl.c +++ b/net/ethtool/ioctl.c @@ -987,6 +987,11 @@ static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, if (rc) return rc; + /* Nonzero ring with RSS only makes sense if NIC adds them together */ + if (info.flow_type & FLOW_RSS && !ops->cap_rss_rxnfc_adds && + ethtool_get_flow_spec_ring(info.fs.ring_cookie)) + return -EINVAL; + if (ops->get_rxfh) { struct ethtool_rxfh_param rxfh = {};