Support updating port MTU.
Signed-off-by: Jiawen Wu <jiawe...@trustnetic.com>
---
doc/guides/nics/features/ngbe.ini | 1 +
drivers/net/ngbe/base/ngbe_type.h | 3 +++
drivers/net/ngbe/ngbe_ethdev.c | 41 +++++++++++++++++++++++++++++++
3 files changed, 45 insertions(+)
diff --git a/doc/guides/nics/features/ngbe.ini
b/doc/guides/nics/features/ngbe.ini
index 42101020dd..bdb06916e1 100644
--- a/doc/guides/nics/features/ngbe.ini
+++ b/doc/guides/nics/features/ngbe.ini
@@ -8,6 +8,7 @@ Speed capabilities = Y
Link status = Y
Link status event = Y
Queue start/stop = Y
+MTU update = Y
Jumbo frame = Y
Scattered Rx = Y
TSO = Y
diff --git a/drivers/net/ngbe/base/ngbe_type.h
b/drivers/net/ngbe/base/ngbe_type.h
index c13f0208fd..78fb0da7fa 100644
--- a/drivers/net/ngbe/base/ngbe_type.h
+++ b/drivers/net/ngbe/base/ngbe_type.h
@@ -8,6 +8,7 @@
#define NGBE_LINK_UP_TIME 90 /* 9.0 Seconds */
+#define NGBE_FRAME_SIZE_MAX (9728) /* Maximum frame size, +FCS */
#define NGBE_FRAME_SIZE_DFT (1522) /* Default frame size, +FCS */
#define NGBE_MAX_QP (8)
@@ -316,6 +317,8 @@ struct ngbe_hw {
u16 nb_rx_queues;
u16 nb_tx_queues;
+ u32 mode;
+
u32 q_rx_regs[8 * 4];
u32 q_tx_regs[8 * 4];
bool offset_loaded;
diff --git a/drivers/net/ngbe/ngbe_ethdev.c b/drivers/net/ngbe/ngbe_ethdev.c
index 45d7c48011..29f35d9e8d 100644
--- a/drivers/net/ngbe/ngbe_ethdev.c
+++ b/drivers/net/ngbe/ngbe_ethdev.c
@@ -1970,6 +1970,46 @@ ngbe_dev_interrupt_handler(void *param)
ngbe_dev_interrupt_action(dev);
}
+static int
+ngbe_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
+{
+ struct ngbe_hw *hw = ngbe_dev_hw(dev);
+ struct rte_eth_dev_info dev_info;
+ uint32_t frame_size = mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN + 4;
+ struct rte_eth_dev_data *dev_data = dev->data;
+ int ret;
+
+ ret = ngbe_dev_info_get(dev, &dev_info);
+ if (ret != 0)
+ return ret;
+
+ /* check that mtu is within the allowed range */
+ if (mtu < RTE_ETHER_MIN_MTU || frame_size > dev_info.max_rx_pktlen)
+ return -EINVAL;
+
+ /* If device is started, refuse mtu that requires the support of
+ * scattered packets when this feature has not been enabled before.
+ */
+ if (dev_data->dev_started && !dev_data->scattered_rx &&
+ (frame_size + 2 * NGBE_VLAN_TAG_SIZE >
+ dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM)) {
+ PMD_INIT_LOG(ERR, "Stop port first.");
+ return -EINVAL;
+ }
+
+ /* update max frame size */
+ dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
+
+ if (hw->mode)
+ wr32m(hw, NGBE_FRMSZ, NGBE_FRMSZ_MAX_MASK,
+ NGBE_FRAME_SIZE_MAX);
+ else
+ wr32m(hw, NGBE_FRMSZ, NGBE_FRMSZ_MAX_MASK,
+ NGBE_FRMSZ_MAX(frame_size));
+
+ return 0;
+}
+
/**
* Set the IVAR registers, mapping interrupt causes to vectors
* @param hw
@@ -2078,6 +2118,7 @@ static const struct eth_dev_ops ngbe_eth_dev_ops = {
.xstats_get_names = ngbe_dev_xstats_get_names,
.xstats_get_names_by_id = ngbe_dev_xstats_get_names_by_id,
.queue_stats_mapping_set = ngbe_dev_queue_stats_mapping_set,
+ .mtu_set = ngbe_dev_mtu_set,
.vlan_offload_set = ngbe_vlan_offload_set,
.rx_queue_start = ngbe_dev_rx_queue_start,
.rx_queue_stop = ngbe_dev_rx_queue_stop,
--
2.21.0.windows.1
