Re: [PATCH 2/6] bond: removing switch statement from rx burst method

["Sanford, Robert" <rsanford-JqFfY2XvxFXQT0dZR+AlfA@public.gmane.org>]

Reviewed-by: Robert Sanford <rsanford-JqFfY2XvxFXQT0dZR+AlfA@public.gmane.org>


>Splitting rx burst function into seperate functions to avoid the need for
>a switch statement and also to match the structure of the tx burst
>functions.
>
>Signed-off-by: Declan Doherty <declan.doherty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
>---
> lib/librte_pmd_bond/rte_eth_bond_pmd.c |   62
>++++++++++++++++++--------------
> 1 files changed, 35 insertions(+), 27 deletions(-)
>
>diff --git a/lib/librte_pmd_bond/rte_eth_bond_pmd.c
>b/lib/librte_pmd_bond/rte_eth_bond_pmd.c
>index cd3eecf..683b146 100644
>--- a/lib/librte_pmd_bond/rte_eth_bond_pmd.c
>+++ b/lib/librte_pmd_bond/rte_eth_bond_pmd.c
>@@ -59,33 +59,37 @@ bond_ethdev_rx_burst(void *queue, struct rte_mbuf
>**bufs, uint16_t nb_pkts)
> 
> 	internals = bd_rx_q->dev_private;
> 
>-	switch (internals->mode) {
>-	case BONDING_MODE_ROUND_ROBIN:
>-	case BONDING_MODE_BROADCAST:
>-	case BONDING_MODE_BALANCE:
>-		for (i = 0; i < internals->active_slave_count && nb_pkts; i++) {
>-			/* Offset of pointer to *bufs increases as packets are received
>-			 * from other slaves */
>-			num_rx_slave = rte_eth_rx_burst(internals->active_slaves[i],
>-					bd_rx_q->queue_id, bufs + num_rx_total, nb_pkts);
>-			if (num_rx_slave) {
>-				num_rx_total += num_rx_slave;
>-				nb_pkts -= num_rx_slave;
>-			}
>+	for (i = 0; i < internals->active_slave_count && nb_pkts; i++) {
>+		/* Offset of pointer to *bufs increases as packets are received
>+		 * from other slaves */
>+		num_rx_slave = rte_eth_rx_burst(internals->active_slaves[i],
>+				bd_rx_q->queue_id, bufs + num_rx_total, nb_pkts);
>+		if (num_rx_slave) {
>+			num_rx_total += num_rx_slave;
>+			nb_pkts -= num_rx_slave;
> 		}
>-		break;
>-	case BONDING_MODE_ACTIVE_BACKUP:
>-		num_rx_slave = rte_eth_rx_burst(internals->current_primary_port,
>-				bd_rx_q->queue_id, bufs, nb_pkts);
>-		if (num_rx_slave)
>-			num_rx_total = num_rx_slave;
>-		break;
> 	}
>+
> 	return num_rx_total;
> }
> 
> static uint16_t
>-bond_ethdev_tx_round_robin(void *queue, struct rte_mbuf **bufs,
>+bond_ethdev_rx_burst_active_backup(void *queue, struct rte_mbuf **bufs,
>+		uint16_t nb_pkts)
>+{
>+	struct bond_dev_private *internals;
>+
>+	/* Cast to structure, containing bonded device's port id and queue id */
>+	struct bond_rx_queue *bd_rx_q = (struct bond_rx_queue *)queue;
>+
>+	internals = bd_rx_q->dev_private;
>+
>+	return rte_eth_rx_burst(internals->current_primary_port,
>+			bd_rx_q->queue_id, bufs, nb_pkts);
>+}
>+
>+static uint16_t
>+bond_ethdev_tx_burst_round_robin(void *queue, struct rte_mbuf **bufs,
> 		uint16_t nb_pkts)
> {
> 	struct bond_dev_private *dev_private;
>@@ -134,7 +138,7 @@ bond_ethdev_tx_round_robin(void *queue, struct
>rte_mbuf **bufs,
> }
> 
> static uint16_t
>-bond_ethdev_tx_active_backup(void *queue,
>+bond_ethdev_tx_burst_active_backup(void *queue,
> 		struct rte_mbuf **bufs, uint16_t nb_pkts)
> {
> 	struct bond_dev_private *internals;
>@@ -270,7 +274,8 @@ xmit_slave_hash(const struct rte_mbuf *buf, uint8_t
>slave_count, uint8_t policy)
> }
> 
> static uint16_t
>-bond_ethdev_tx_balance(void *queue, struct rte_mbuf **bufs, uint16_t
>nb_pkts)
>+bond_ethdev_tx_burst_balance(void *queue, struct rte_mbuf **bufs,
>+		uint16_t nb_pkts)
> {
> 	struct bond_dev_private *internals;
> 	struct bond_tx_queue *bd_tx_q;
>@@ -480,22 +485,25 @@ bond_ethdev_mode_set(struct rte_eth_dev *eth_dev,
>int mode)
> 
> 	switch (mode) {
> 	case BONDING_MODE_ROUND_ROBIN:
>-		eth_dev->tx_pkt_burst = bond_ethdev_tx_round_robin;
>+		eth_dev->tx_pkt_burst = bond_ethdev_tx_burst_round_robin;
>+		eth_dev->rx_pkt_burst = bond_ethdev_rx_burst;
> 		break;
> 	case BONDING_MODE_ACTIVE_BACKUP:
>-		eth_dev->tx_pkt_burst = bond_ethdev_tx_active_backup;
>+		eth_dev->tx_pkt_burst = bond_ethdev_tx_burst_active_backup;
>+		eth_dev->rx_pkt_burst = bond_ethdev_rx_burst_active_backup;
> 		break;
> 	case BONDING_MODE_BALANCE:
>-		eth_dev->tx_pkt_burst = bond_ethdev_tx_balance;
>+		eth_dev->tx_pkt_burst = bond_ethdev_tx_burst_balance;
>+		eth_dev->rx_pkt_burst = bond_ethdev_rx_burst;
> 		break;
> 	case BONDING_MODE_BROADCAST:
> 		eth_dev->tx_pkt_burst = bond_ethdev_tx_burst_broadcast;
>+		eth_dev->rx_pkt_burst = bond_ethdev_rx_burst;
> 		break;
> 	default:
> 		return -1;
> 	}
> 
>-	eth_dev->rx_pkt_burst = bond_ethdev_rx_burst;
> 	internals->mode = mode;
> 
> 	return 0;
>-- 
>1.7.0.7
>