[dpdk-dev] [PATCH v4 1/4] net/af_xdp: enqueue buf ring when allocate Tx queue fails

[Xiaolong Ye]

When it fails to allocate enough slots in Tx queue for transmitting
packets, we need to return the dequeued addrs to buf ring.

Fixes: f1debd77efaf ("net/af_xdp: introduce AF_XDP PMD")

Reviewed-by: David Marchand <david.march...@redhat.com>
Signed-off-by: Xiaolong Ye <xiaolong...@intel.com>
---
 drivers/net/af_xdp/rte_eth_af_xdp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c 
b/drivers/net/af_xdp/rte_eth_af_xdp.c
index 007a1c6b4..5cc643ce2 100644
--- a/drivers/net/af_xdp/rte_eth_af_xdp.c
+++ b/drivers/net/af_xdp/rte_eth_af_xdp.c
@@ -276,6 +276,7 @@ eth_af_xdp_tx(void *queue, struct rte_mbuf **bufs, uint16_t 
nb_pkts)
 
        if (xsk_ring_prod__reserve(&txq->tx, nb_pkts, &idx_tx) != nb_pkts) {
                kick_tx(txq);
+               rte_ring_enqueue_bulk(umem->buf_ring, addrs, nb_pkts, NULL);
                return 0;
        }
 
-- 
2.17.1