net/iavf: fix Rx data buffer size

[ upstream commit c5549f1d9b1bf2bf2b09517daf89c84fbf5b18e0 ] According to hardware spec, the data buffer size should not be greater than 16K - 128. Fixes: 69dd4c3 ("net/avf: enable queue and device") Signed-off-by: Wenjun Wu <wenjun1.wu@intel.com> Acked-by: Qi Zhang <qi.z.zhang@intel.com>
kevintraynor · Jul 11, 2023 · 0a060a3 · 0a060a3
1 parent 54b0828
commit 0a060a3
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diff --git a/drivers/net/iavf/iavf_rxtx.c b/drivers/net/iavf/iavf_rxtx.c
@@ -651,6 +651,7 @@ iavf_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
 
 	len = rte_pktmbuf_data_room_size(rxq->mp) - RTE_PKTMBUF_HEADROOM;
 	rxq->rx_buf_len = RTE_ALIGN_FLOOR(len, (1 << IAVF_RXQ_CTX_DBUFF_SHIFT));
+	rxq->rx_buf_len = RTE_MIN(rxq->rx_buf_len, IAVF_RX_MAX_DATA_BUF_SIZE);
 
 	/* Allocate the software ring. */
 	len = nb_desc + IAVF_RX_MAX_BURST;

diff --git a/drivers/net/iavf/iavf_rxtx.h b/drivers/net/iavf/iavf_rxtx.h
@@ -16,6 +16,9 @@
 /* used for Rx Bulk Allocate */
 #define IAVF_RX_MAX_BURST         32
 
+/* Max data buffer size must be 16K - 128 bytes */
+#define IAVF_RX_MAX_DATA_BUF_SIZE (16 * 1024 - 128)
+
 /* used for Vector PMD */
 #define IAVF_VPMD_RX_MAX_BURST    32
 #define IAVF_VPMD_TX_MAX_BURST    32