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* [PATCH] net/bonding: fix mbuf fast free usage
@ 2022-05-21  7:08 Min Hu (Connor)
  2022-05-24 13:43 ` Ferruh Yigit
  2022-05-25  1:08 ` [PATCH v2] " Min Hu (Connor)
  0 siblings, 2 replies; 5+ messages in thread
From: Min Hu (Connor) @ 2022-05-21  7:08 UTC (permalink / raw)
  To: dev
  Cc: Min Hu (Connor),
	stable, Chas Williams, Thomas Monjalon, Neil Horman,
	David Marchand

Usage of 'RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE' offload has two
constraints: per-queue all mbufs comes from the same mempool and
has refcnt = 1.

Bonding mode Broadcast, Tx mbuf has more than one refcnt.
Bonding mode 8023AD, It contains two mempools separately for LACP
packets and other packets. In Tx or Rx, Fast mbuf free will operate
mbuf from different mempool.

This patch will prevent 'RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE' offload
when in bonding mode Broadcast and mode 8023AD.

Fixes: 78aecefed955 ("bond: move param parsing in configure step")
Cc: stable@dpdk.org

Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 drivers/net/bonding/rte_eth_bond_pmd.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c
index c929b55768..5ca90c7590 100644
--- a/drivers/net/bonding/rte_eth_bond_pmd.c
+++ b/drivers/net/bonding/rte_eth_bond_pmd.c
@@ -3563,6 +3563,7 @@ bond_ethdev_configure(struct rte_eth_dev *dev)
 	const char *name = dev->device->name;
 	struct bond_dev_private *internals = dev->data->dev_private;
 	struct rte_kvargs *kvlist = internals->kvlist;
+	uint64_t offloads;
 	int arg_count;
 	uint16_t port_id = dev - rte_eth_devices;
 	uint8_t agg_mode;
@@ -3613,6 +3614,15 @@ bond_ethdev_configure(struct rte_eth_dev *dev)
 		}
 	}
 
+	offloads = dev->data->dev_conf.txmode.offloads;
+	if ((offloads & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) &&
+		(internals->mode == BONDING_MODE_8023AD ||
+		internals->mode == BONDING_MODE_BROADCAST)) {
+		RTE_BOND_LOG(WARNING, "BOND MODE Broadcast & 8023AD don't support MBUF_FAST_FREE offload, force disable it.");
+		offloads &= ~RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
+		dev->data->dev_conf.txmode.offloads = offloads;
+	}
+
 	/* set the max_rx_pktlen */
 	internals->max_rx_pktlen = internals->candidate_max_rx_pktlen;
 
-- 
2.33.0


^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2022-05-25 17:44 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-05-21  7:08 [PATCH] net/bonding: fix mbuf fast free usage Min Hu (Connor)
2022-05-24 13:43 ` Ferruh Yigit
2022-05-25  1:11   ` Min Hu (Connor)
2022-05-25  1:08 ` [PATCH v2] " Min Hu (Connor)
2022-05-25 17:44   ` Ferruh Yigit

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