[dpdk-dev] [PATCH] net/bonding: improve non-ip packets RSS

[Haifeng Lin <haifeng.lin@huawei.com>]

Most ethernet not support non-ip packets RSS and only first
queue can used to receive. In this scenario lacp bond can
only use one queue even if multi queue configured.

We use below formula to change the map between bond_qid and
slave_qid to let at least slave_num queues to receive packets:

	slave_qid = (bond_qid + slave_id) % queue_num

Signed-off-by: Haifeng Lin <haifeng.lin@huawei.com>
---
 drivers/net/bonding/rte_eth_bond_pmd.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c
index 09ce7bf..8ad843a 100644
--- a/drivers/net/bonding/rte_eth_bond_pmd.c
+++ b/drivers/net/bonding/rte_eth_bond_pmd.c
@@ -141,6 +141,8 @@ bond_ethdev_rx_burst_8023ad(void *queue, struct rte_mbuf **bufs,
 	uint8_t collecting;  /* current slave collecting status */
 	const uint8_t promisc = internals->promiscuous_en;
 	uint8_t i, j, k;
+	int slave_qid, bond_qid = bd_rx_q->queue_id;
+	int queue_num = internals->nb_rx_queues;
 
 	rte_eth_macaddr_get(internals->port_id, &bond_mac);
 	/* Copy slave list to protect against slave up/down changes during tx
@@ -154,7 +156,9 @@ bond_ethdev_rx_burst_8023ad(void *queue, struct rte_mbuf **bufs,
 		collecting = ACTOR_STATE(&mode_8023ad_ports[slaves[i]], COLLECTING);
 
 		/* Read packets from this slave */
-		num_rx_total += rte_eth_rx_burst(slaves[i], bd_rx_q->queue_id,
+		slave_qid = queue_num ? (bond_qid + slaves[i]) % queue_num :
+				bond_qid;
+		num_rx_total += rte_eth_rx_burst(slaves[i], slave_qid,
 				&bufs[num_rx_total], nb_pkts - num_rx_total);
 
 		for (k = j; k < 2 && k < num_rx_total; k++)
-- 
1.8.3.1