From: Liron Himi <lironh@marvell.com>
Expose max-MTU based on the max frame size that
l4 checksum generation can be done by HW.
Signed-off-by: Liron Himi <lironh@marvell.com>
Reviewed-by: Yuri Chipchev <yuric@marvell.com>
---
drivers/net/mvpp2/mrvl_ethdev.c | 24 ++++++++++++++++++++++--
drivers/net/mvpp2/mrvl_ethdev.h | 1 +
2 files changed, 23 insertions(+), 2 deletions(-)
@@ -499,9 +499,17 @@ mrvl_dev_configure(struct rte_eth_dev *dev)
return -EINVAL;
}
- if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME)
+ if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
dev->data->mtu = dev->data->dev_conf.rxmode.max_rx_pkt_len -
MRVL_PP2_ETH_HDRS_LEN;
+ if (dev->data->mtu > priv->max_mtu) {
+ MRVL_LOG(ERR, "inherit MTU %u from max_rx_pkt_len %u is larger than max_mtu %u\n",
+ dev->data->mtu,
+ dev->data->dev_conf.rxmode.max_rx_pkt_len,
+ priv->max_mtu);
+ return -EINVAL;
+ }
+ }
if (dev->data->dev_conf.txmode.offloads & DEV_TX_OFFLOAD_MULTI_SEGS)
priv->multiseg = 1;
@@ -1686,9 +1694,11 @@ mrvl_xstats_get_names(struct rte_eth_dev *dev __rte_unused,
* Info structure output buffer.
*/
static int
-mrvl_dev_infos_get(struct rte_eth_dev *dev __rte_unused,
+mrvl_dev_infos_get(struct rte_eth_dev *dev,
struct rte_eth_dev_info *info)
{
+ struct mrvl_priv *priv = dev->data->dev_private;
+
info->speed_capa = ETH_LINK_SPEED_10M |
ETH_LINK_SPEED_100M |
ETH_LINK_SPEED_1G |
@@ -1720,6 +1730,7 @@ mrvl_dev_infos_get(struct rte_eth_dev *dev __rte_unused,
info->default_rxconf.rx_drop_en = 1;
info->max_rx_pktlen = MRVL_PKT_SIZE_MAX;
+ info->max_mtu = priv->max_mtu;
return 0;
}
@@ -3118,6 +3129,7 @@ mrvl_priv_create(const char *dev_name)
struct pp2_bpool_params bpool_params;
char match[MRVL_MATCH_LEN];
struct mrvl_priv *priv;
+ uint16_t max_frame_size;
int ret, bpool_bit;
priv = rte_zmalloc_socket(dev_name, sizeof(*priv), 0, rte_socket_id());
@@ -3129,6 +3141,14 @@ mrvl_priv_create(const char *dev_name)
if (ret)
goto out_free_priv;
+ ret = pp2_ppio_get_l4_cksum_max_frame_size(priv->pp_id, priv->ppio_id,
+ &max_frame_size);
+ if (ret)
+ goto out_free_priv;
+
+ priv->max_mtu = max_frame_size + RTE_ETHER_CRC_LEN -
+ MRVL_PP2_ETH_HDRS_LEN;
+
bpool_bit = mrvl_reserve_bit(&used_bpools[priv->pp_id],
PP2_BPOOL_NUM_POOLS);
if (bpool_bit < 0)
@@ -159,6 +159,7 @@ struct mrvl_priv {
uint8_t uc_mc_flushed;
uint8_t isolated;
uint8_t multiseg;
+ uint16_t max_mtu;
struct pp2_ppio_params ppio_params;
struct pp2_cls_qos_tbl_params qos_tbl_params;