qlge: Add ethtool self-test.

Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 137 insertions, 1 deletions

diff --git a/drivers/net/qlge/qlge.h b/drivers/net/qlge/qlge.h
index 73c7fd2badc..872e95ee40e 100644
--- a/drivers/net/qlge/qlge.h
+++ b/drivers/net/qlge/qlge.h
@@ -1581,6 +1581,8 @@ enum {
 	QL_ALLMULTI = 6,
 	QL_PORT_CFG = 7,
 	QL_CAM_RT_SET = 8,
+	QL_SELFTEST = 9,
+	QL_LB_LINK_UP = 10,
 };
 
 /* link_status bit definitions */
@@ -1717,6 +1719,7 @@ struct ql_adapter {
 	struct completion ide_completion;
 	struct nic_operations *nic_ops;
 	u16 device_id;
+	atomic_t lb_count;
 };
 
 /*
@@ -1808,6 +1811,9 @@ int ql_mb_set_port_cfg(struct ql_adapter *qdev);
 int ql_wait_fifo_empty(struct ql_adapter *qdev);
 void ql_gen_reg_dump(struct ql_adapter *qdev,
 			struct ql_reg_dump *mpi_coredump);
+netdev_tx_t ql_lb_send(struct sk_buff *skb, struct net_device *ndev);
+void ql_check_lb_frame(struct ql_adapter *, struct sk_buff *);
+int ql_clean_lb_rx_ring(struct rx_ring *rx_ring, int budget);
 
 #if 1
 #define QL_ALL_DUMP
diff --git a/drivers/net/qlge/qlge_ethtool.c b/drivers/net/qlge/qlge_ethtool.c
index 62c4af05780..058fa0a48c6 100644
--- a/drivers/net/qlge/qlge_ethtool.c
+++ b/drivers/net/qlge/qlge_ethtool.c
@@ -36,6 +36,11 @@
 
 #include "qlge.h"
 
+static const char ql_gstrings_test[][ETH_GSTRING_LEN] = {
+	"Loopback test  (offline)"
+};
+#define QLGE_TEST_LEN (sizeof(ql_gstrings_test) / ETH_GSTRING_LEN)
+
 static int ql_update_ring_coalescing(struct ql_adapter *qdev)
 {
 	int i, status = 0;
@@ -251,6 +256,8 @@ static void ql_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
 static int ql_get_sset_count(struct net_device *dev, int sset)
 {
 	switch (sset) {
+	case ETH_SS_TEST:
+		return QLGE_TEST_LEN;
 	case ETH_SS_STATS:
 		return ARRAY_SIZE(ql_stats_str_arr);
 	default:
@@ -429,6 +436,110 @@ static int ql_phys_id(struct net_device *ndev, u32 data)
 	return 0;
 }
 
+static int ql_start_loopback(struct ql_adapter *qdev)
+{
+	if (netif_carrier_ok(qdev->ndev)) {
+		set_bit(QL_LB_LINK_UP, &qdev->flags);
+		netif_carrier_off(qdev->ndev);
+	} else
+		clear_bit(QL_LB_LINK_UP, &qdev->flags);
+	qdev->link_config |= CFG_LOOPBACK_PCS;
+	return ql_mb_set_port_cfg(qdev);
+}
+
+static void ql_stop_loopback(struct ql_adapter *qdev)
+{
+	qdev->link_config &= ~CFG_LOOPBACK_PCS;
+	ql_mb_set_port_cfg(qdev);
+	if (test_bit(QL_LB_LINK_UP, &qdev->flags)) {
+		netif_carrier_on(qdev->ndev);
+		clear_bit(QL_LB_LINK_UP, &qdev->flags);
+	}
+}
+
+static void ql_create_lb_frame(struct sk_buff *skb,
+					unsigned int frame_size)
+{
+	memset(skb->data, 0xFF, frame_size);
+	frame_size &= ~1;
+	memset(&skb->data[frame_size / 2], 0xAA, frame_size / 2 - 1);
+	memset(&skb->data[frame_size / 2 + 10], 0xBE, 1);
+	memset(&skb->data[frame_size / 2 + 12], 0xAF, 1);
+}
+
+void ql_check_lb_frame(struct ql_adapter *qdev,
+					struct sk_buff *skb)
+{
+	unsigned int frame_size = skb->len;
+
+	if ((*(skb->data + 3) == 0xFF) &&
+		(*(skb->data + frame_size / 2 + 10) == 0xBE) &&
+		(*(skb->data + frame_size / 2 + 12) == 0xAF)) {
+			atomic_dec(&qdev->lb_count);
+			return;
+	}
+}
+
+static int ql_run_loopback_test(struct ql_adapter *qdev)
+{
+	int i;
+	netdev_tx_t rc;
+	struct sk_buff *skb;
+	unsigned int size = SMALL_BUF_MAP_SIZE;
+
+	for (i = 0; i < 64; i++) {
+		skb = netdev_alloc_skb(qdev->ndev, size);
+		if (!skb)
+			return -ENOMEM;
+
+		skb->queue_mapping = 0;
+		skb_put(skb, size);
+		ql_create_lb_frame(skb, size);
+		rc = ql_lb_send(skb, qdev->ndev);
+		if (rc != NETDEV_TX_OK)
+			return -EPIPE;
+		atomic_inc(&qdev->lb_count);
+	}
+
+	ql_clean_lb_rx_ring(&qdev->rx_ring[0], 128);
+	return atomic_read(&qdev->lb_count) ? -EIO : 0;
+}
+
+static int ql_loopback_test(struct ql_adapter *qdev, u64 *data)
+{
+	*data = ql_start_loopback(qdev);
+	if (*data)
+		goto out;
+	*data = ql_run_loopback_test(qdev);
+out:
+	ql_stop_loopback(qdev);
+	return *data;
+}
+
+static void ql_self_test(struct net_device *ndev,
+				struct ethtool_test *eth_test, u64 *data)
+{
+	struct ql_adapter *qdev = netdev_priv(ndev);
+
+	if (netif_running(ndev)) {
+		set_bit(QL_SELFTEST, &qdev->flags);
+		if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
+			/* Offline tests */
+			if (ql_loopback_test(qdev, &data[0]))
+				eth_test->flags |= ETH_TEST_FL_FAILED;
+
+		} else {
+			/* Online tests */
+			data[0] = 0;
+		}
+		clear_bit(QL_SELFTEST, &qdev->flags);
+	} else {
+		QPRINTK(qdev, DRV, ERR,
+			"%s: is down, Loopback test will fail.\n", ndev->name);
+		eth_test->flags |= ETH_TEST_FL_FAILED;
+	}
+}
+
 static int ql_get_regs_len(struct net_device *ndev)
 {
 	return sizeof(struct ql_reg_dump);
@@ -575,6 +686,7 @@ const struct ethtool_ops qlge_ethtool_ops = {
 	.set_msglevel = ql_set_msglevel,
 	.get_link = ethtool_op_get_link,
 	.phys_id		 = ql_phys_id,
+	.self_test		 = ql_self_test,
 	.get_pauseparam		 = ql_get_pauseparam,
 	.set_pauseparam		 = ql_set_pauseparam,
 	.get_rx_csum = ql_get_rx_csum,
diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c
index 42ad811ec31..4de054505ec 100644
--- a/drivers/net/qlge/qlge_main.c
+++ b/drivers/net/qlge/qlge_main.c
@@ -1680,6 +1680,13 @@ static void ql_process_mac_rx_intr(struct ql_adapter *qdev,
 		return;
 	}
 
+	/* loopback self test for ethtool */
+	if (test_bit(QL_SELFTEST, &qdev->flags)) {
+		ql_check_lb_frame(qdev, skb);
+		dev_kfree_skb_any(skb);
+		return;
+	}
+
 	prefetch(skb->data);
 	skb->dev = ndev;
 	if (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) {
@@ -2248,6 +2255,7 @@ static netdev_tx_t qlge_send(struct sk_buff *skb, struct net_device *ndev)
 	return NETDEV_TX_OK;
 }
 
+
 static void ql_free_shadow_space(struct ql_adapter *qdev)
 {
 	if (qdev->rx_ring_shadow_reg_area) {
@@ -4174,7 +4182,6 @@ err_out:
 	return err;
 }
 
-
 static const struct net_device_ops qlge_netdev_ops = {
 	.ndo_open		= qlge_open,
 	.ndo_stop		= qlge_close,
@@ -4243,10 +4250,21 @@ static int __devinit qlge_probe(struct pci_dev *pdev,
 	}
 	ql_link_off(qdev);
 	ql_display_dev_info(ndev);
+	atomic_set(&qdev->lb_count, 0);
 	cards_found++;
 	return 0;
 }
 
+netdev_tx_t ql_lb_send(struct sk_buff *skb, struct net_device *ndev)
+{
+	return qlge_send(skb, ndev);
+}
+
+int ql_clean_lb_rx_ring(struct rx_ring *rx_ring, int budget)
+{
+	return ql_clean_inbound_rx_ring(rx_ring, budget);
+}
+
 static void __devexit qlge_remove(struct pci_dev *pdev)
 {
 	struct net_device *ndev = pci_get_drvdata(pdev);