net/sfc: support promiscuous and all-multicast control

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
Reviewed-by: Robert Stonehouse <rstonehouse@solarflare.com>

doc/guides/nics/features/sfc_efx.ini

@@ -9,6 +9,8 @@ Link status          = Y
 Link status event    = Y
 MTU update           = Y
 Jumbo frame          = Y
+Promiscuous mode     = Y
+Allmulticast mode    = Y
 Flow control         = Y
 L3 checksum offload  = P
 L4 checksum offload  = P

doc/guides/nics/sfc_efx.rst

@@ -59,6 +59,10 @@ SFC EFX PMD has support for:
 
 - Jumbo frames up to 9K
 
+- Promiscuous mode
+
+- Allmulticast mode
+
 
 Non-supported Features
 ----------------------

drivers/net/sfc/sfc.h

@@ -96,6 +96,13 @@ enum sfc_adapter_state {
 	SFC_ADAPTER_NSTATES
 };
 
+enum sfc_dev_filter_mode {
+	SFC_DEV_FILTER_MODE_PROMISC = 0,
+	SFC_DEV_FILTER_MODE_ALLMULTI,
+
+	SFC_DEV_FILTER_NMODES
+};
+
 enum sfc_mcdi_state {
 	SFC_MCDI_UNINITIALIZED = 0,
 	SFC_MCDI_INITIALIZED,
@@ -133,6 +140,9 @@ struct sfc_port {
 	boolean_t			flow_ctrl_autoneg;
 	size_t				pdu;
 
+	boolean_t			promisc;
+	boolean_t			allmulti;
+
 	rte_spinlock_t			mac_stats_lock;
 	uint64_t			*mac_stats_buf;
 	efsys_mem_t			mac_stats_dma_mem;
@@ -252,6 +262,7 @@ void sfc_port_stop(struct sfc_adapter *sa);
 void sfc_port_link_mode_to_info(efx_link_mode_t link_mode,
 				struct rte_eth_link *link_info);
 int sfc_port_update_mac_stats(struct sfc_adapter *sa);
+int sfc_set_rx_mode(struct sfc_adapter *sa);
 
 
 #ifdef __cplusplus

drivers/net/sfc/sfc_ethdev.c

@@ -252,6 +252,59 @@ sfc_dev_close(struct rte_eth_dev *dev)
 	sfc_log_init(sa, "done");
 }
 
+static void
+sfc_dev_filter_set(struct rte_eth_dev *dev, enum sfc_dev_filter_mode mode,
+		   boolean_t enabled)
+{
+	struct sfc_port *port;
+	boolean_t *toggle;
+	struct sfc_adapter *sa = dev->data->dev_private;
+	boolean_t allmulti = (mode == SFC_DEV_FILTER_MODE_ALLMULTI);
+	const char *desc = (allmulti) ? "all-multi" : "promiscuous";
+
+	sfc_adapter_lock(sa);
+
+	port = &sa->port;
+	toggle = (allmulti) ? (&port->allmulti) : (&port->promisc);
+
+	if (*toggle != enabled) {
+		*toggle = enabled;
+
+		if ((sa->state == SFC_ADAPTER_STARTED) &&
+		    (sfc_set_rx_mode(sa) != 0)) {
+			*toggle = !(enabled);
+			sfc_warn(sa, "Failed to %s %s mode",
+				 ((enabled) ? "enable" : "disable"), desc);
+		}
+	}
+
+	sfc_adapter_unlock(sa);
+}
+
+static void
+sfc_dev_promisc_enable(struct rte_eth_dev *dev)
+{
+	sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_PROMISC, B_TRUE);
+}
+
+static void
+sfc_dev_promisc_disable(struct rte_eth_dev *dev)
+{
+	sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_PROMISC, B_FALSE);
+}
+
+static void
+sfc_dev_allmulti_enable(struct rte_eth_dev *dev)
+{
+	sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_ALLMULTI, B_TRUE);
+}
+
+static void
+sfc_dev_allmulti_disable(struct rte_eth_dev *dev)
+{
+	sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_ALLMULTI, B_FALSE);
+}
+
 static int
 sfc_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
 		   uint16_t nb_rx_desc, unsigned int socket_id,
@@ -660,6 +713,10 @@ static const struct eth_dev_ops sfc_eth_dev_ops = {
 	.dev_set_link_up		= sfc_dev_set_link_up,
 	.dev_set_link_down		= sfc_dev_set_link_down,
 	.dev_close			= sfc_dev_close,
+	.promiscuous_enable		= sfc_dev_promisc_enable,
+	.promiscuous_disable		= sfc_dev_promisc_disable,
+	.allmulticast_enable		= sfc_dev_allmulti_enable,
+	.allmulticast_disable		= sfc_dev_allmulti_disable,
 	.link_update			= sfc_dev_link_update,
 	.stats_get			= sfc_stats_get,
 	.xstats_get			= sfc_xstats_get,

drivers/net/sfc/sfc_port.c

@@ -103,7 +103,11 @@ sfc_port_start(struct sfc_adapter *sa)
 		goto fail_mac_addr_set;
 
 	sfc_log_init(sa, "set MAC filters");
-	rc = efx_mac_filter_set(sa->nic, B_TRUE, B_TRUE, B_TRUE, B_TRUE);
+	port->promisc = (sa->eth_dev->data->promiscuous != 0) ?
+			B_TRUE : B_FALSE;
+	port->allmulti = (sa->eth_dev->data->all_multicast != 0) ?
+			 B_TRUE : B_FALSE;
+	rc = sfc_set_rx_mode(sa);
 	if (rc != 0)
 		goto fail_mac_filter_set;
 
@@ -219,6 +223,18 @@ sfc_port_fini(struct sfc_adapter *sa)
 	sfc_log_init(sa, "done");
 }
 
+int
+sfc_set_rx_mode(struct sfc_adapter *sa)
+{
+	struct sfc_port *port = &sa->port;
+	int rc;
+
+	rc = efx_mac_filter_set(sa->nic, port->promisc, B_TRUE,
+				port->promisc || port->allmulti, B_TRUE);
+
+	return rc;
+}
+
 void
 sfc_port_link_mode_to_info(efx_link_mode_t link_mode,
 			   struct rte_eth_link *link_info)