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Commit 094f57aa authored by Elad Kanfi's avatar Elad Kanfi Committed by David S. Miller
Browse files

net: nps_enet: code reuse 



Add inline function that checks if there is a pending tx packet.

Signed-off-by: default avatarElad Kanfi <eladkan@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ddbff3e8

drivers/net/ethernet/ezchip/nps_enet.c

+11 −10
Original line number Diff line number Diff line
@@ -24,6 +24,14 @@ 


#define DRV_NAME			"nps_mgt_enet"



static inline bool nps_enet_is_tx_pending(struct nps_enet_priv *priv)

{

	u32 tx_ctrl_value = nps_enet_reg_get(priv, NPS_ENET_REG_TX_CTL);

	u32 tx_ctrl_ct = (tx_ctrl_value & TX_CTL_CT_MASK) >> TX_CTL_CT_SHIFT;



	return (!tx_ctrl_ct && priv->tx_skb);

}



static void nps_enet_clean_rx_fifo(struct net_device *ndev, u32 frame_len)

{

	struct nps_enet_priv *priv = netdev_priv(ndev);
@@ -141,12 +149,11 @@ static void nps_enet_tx_handler(struct net_device *ndev) 
{

	struct nps_enet_priv *priv = netdev_priv(ndev);

	u32 tx_ctrl_value = nps_enet_reg_get(priv, NPS_ENET_REG_TX_CTL);

	u32 tx_ctrl_ct = (tx_ctrl_value & TX_CTL_CT_MASK) >> TX_CTL_CT_SHIFT;

	u32 tx_ctrl_et = (tx_ctrl_value & TX_CTL_ET_MASK) >> TX_CTL_ET_SHIFT;

	u32 tx_ctrl_nt = (tx_ctrl_value & TX_CTL_NT_MASK) >> TX_CTL_NT_SHIFT;



	/* Check if we got TX */

	if (!priv->tx_skb || tx_ctrl_ct)

	if (!nps_enet_is_tx_pending(priv))

		return;



	/* Ack Tx ctrl register */
@@ -184,9 +191,6 @@ static int nps_enet_poll(struct napi_struct *napi, int budget) 
	work_done = nps_enet_rx_handler(ndev);

	if (work_done < budget) {

		u32 buf_int_enable_value = 0;

		u32 tx_ctrl_value = nps_enet_reg_get(priv, NPS_ENET_REG_TX_CTL);

		u32 tx_ctrl_ct =

			(tx_ctrl_value & TX_CTL_CT_MASK) >> TX_CTL_CT_SHIFT;



		napi_complete(napi);
@@ -205,8 +209,7 @@ static int nps_enet_poll(struct napi_struct *napi, int budget) 
		 * the two code lines below will solve this situation by

		 * re-adding ourselves to the poll list.

		 */



		if (priv->tx_skb && !tx_ctrl_ct) {

		if (nps_enet_is_tx_pending(priv)) {

			nps_enet_reg_set(priv, NPS_ENET_REG_BUF_INT_ENABLE, 0);

			napi_reschedule(napi);

		}
@@ -231,11 +234,9 @@ static irqreturn_t nps_enet_irq_handler(s32 irq, void *dev_instance) 
	struct net_device *ndev = dev_instance;

	struct nps_enet_priv *priv = netdev_priv(ndev);

	u32 rx_ctrl_value = nps_enet_reg_get(priv, NPS_ENET_REG_RX_CTL);

	u32 tx_ctrl_value = nps_enet_reg_get(priv, NPS_ENET_REG_TX_CTL);

	u32 tx_ctrl_ct = (tx_ctrl_value & TX_CTL_CT_MASK) >> TX_CTL_CT_SHIFT;

	u32 rx_ctrl_cr = (rx_ctrl_value & RX_CTL_CR_MASK) >> RX_CTL_CR_SHIFT;



	if ((!tx_ctrl_ct && priv->tx_skb) || rx_ctrl_cr)

	if (nps_enet_is_tx_pending(priv) || rx_ctrl_cr)

		if (likely(napi_schedule_prep(&priv->napi))) {

			nps_enet_reg_set(priv, NPS_ENET_REG_BUF_INT_ENABLE, 0);

			__napi_schedule(&priv->napi);