X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fnet%2Fsfc%2Fsfc_port.c;h=c1466a77bf69d4839b672c263f5c5653ea906a15;hb=bce6c42c4ad5;hp=e7eea9fad02a615514a536c04aee9e36a9c25819;hpb=84a9b48128c18c9713edd46400ed8840eb7a931f;p=dpdk.git

diff --git a/drivers/net/sfc/sfc_port.c b/drivers/net/sfc/sfc_port.c
index e7eea9fad0..c1466a77bf 100644
--- a/drivers/net/sfc/sfc_port.c
+++ b/drivers/net/sfc/sfc_port.c
@@ -151,6 +151,7 @@ sfc_port_start(struct sfc_adapter *sa)
 	uint32_t phy_adv_cap;
 	const uint32_t phy_pause_caps =
 		((1u << EFX_PHY_CAP_PAUSE) | (1u << EFX_PHY_CAP_ASYM));
+	unsigned int i;
 
 	sfc_log_init(sa, "entry");
 
@@ -222,6 +223,10 @@ sfc_port_start(struct sfc_adapter *sa)
 	efx_mac_stats_get_mask(sa->nic, port->mac_stats_mask,
 			       sizeof(port->mac_stats_mask));
 
+	for (i = 0, port->mac_stats_nb_supported = 0; i < EFX_MAC_NSTATS; ++i)
+		if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i))
+			port->mac_stats_nb_supported++;
+
 	port->mac_stats_update_generation = 0;
 
 	if (port->mac_stats_update_period_ms != 0) {
@@ -245,6 +250,18 @@ sfc_port_start(struct sfc_adapter *sa)
 		}
 	}
 
+	if ((port->mac_stats_update_period_ms != 0) &&
+	    port->mac_stats_periodic_dma_supported) {
+		/*
+		 * Request an explicit MAC stats upload immediately to
+		 * preclude bogus figures readback if the user decides
+		 * to read stats before periodic DMA is really started
+		 */
+		rc = efx_mac_stats_upload(sa->nic, &port->mac_stats_dma_mem);
+		if (rc != 0)
+			goto fail_mac_stats_upload;
+	}
+
 	sfc_log_init(sa, "disable MAC drain");
 	rc = efx_mac_drain(sa->nic, B_FALSE);
 	if (rc != 0)
@@ -265,6 +282,7 @@ fail_mac_drain:
 	(void)efx_mac_stats_periodic(sa->nic, &port->mac_stats_dma_mem,
 				     0, B_FALSE);
 
+fail_mac_stats_upload:
 fail_mac_stats_periodic:
 fail_mcast_address_list_set:
 fail_mac_filter_set: