Add to support Rx jumbo frames.
Signed-off-by: Jiawen Wu <jiawe...@trustnetic.com>
---
doc/guides/nics/features/ngbe.ini | 1 +
doc/guides/nics/ngbe.rst | 1 +
drivers/net/ngbe/ngbe_ethdev.h | 3 +++
drivers/net/ngbe/ngbe_rxtx.c | 5 ++++-
4 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/doc/guides/nics/features/ngbe.ini
b/doc/guides/nics/features/ngbe.ini
index 053dff3a2f..9785820ea0 100644
--- a/doc/guides/nics/features/ngbe.ini
+++ b/doc/guides/nics/features/ngbe.ini
@@ -9,6 +9,7 @@ Link status = Y
Link status event = Y
Queue start/stop = Y
Burst mode info = Y
+Jumbo frame = Y
Scattered Rx = Y
TSO = Y
CRC offload = Y
diff --git a/doc/guides/nics/ngbe.rst b/doc/guides/nics/ngbe.rst
index 6a6ae39243..702a455041 100644
--- a/doc/guides/nics/ngbe.rst
+++ b/doc/guides/nics/ngbe.rst
@@ -14,6 +14,7 @@ Features
- Packet type information
- Checksum offload
- TSO offload
+- Jumbo frames
- Link state information
- Scattered and gather for TX and RX
diff --git a/drivers/net/ngbe/ngbe_ethdev.h b/drivers/net/ngbe/ngbe_ethdev.h
index 286cb893d6..b270343a3e 100644
--- a/drivers/net/ngbe/ngbe_ethdev.h
+++ b/drivers/net/ngbe/ngbe_ethdev.h
@@ -17,6 +17,9 @@
#define NGBE_QUEUE_ITR_INTERVAL_DEFAULT 500 /* 500us */
+/* The overhead from MTU to max frame size. */
+#define NGBE_ETH_OVERHEAD (RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN)
+
#define NGBE_MISC_VEC_ID RTE_INTR_VEC_ZERO_OFFSET
#define NGBE_RX_VEC_START RTE_INTR_VEC_RXTX_OFFSET
diff --git a/drivers/net/ngbe/ngbe_rxtx.c b/drivers/net/ngbe/ngbe_rxtx.c
index df265bd447..b49303094e 100644
--- a/drivers/net/ngbe/ngbe_rxtx.c
+++ b/drivers/net/ngbe/ngbe_rxtx.c
@@ -2364,8 +2364,11 @@ ngbe_dev_rx_init(struct rte_eth_dev *dev)
hlreg0 &= ~NGBE_SECRXCTL_XDSA;
wr32(hw, NGBE_SECRXCTL, hlreg0);
+ /*
+ * Configure jumbo frame support, if any.
+ */
wr32m(hw, NGBE_FRMSZ, NGBE_FRMSZ_MAX_MASK,
- NGBE_FRMSZ_MAX(NGBE_FRAME_SIZE_DFT));
+ NGBE_FRMSZ_MAX(dev->data->mtu + NGBE_ETH_OVERHEAD));
/* Setup Rx queues */
for (i = 0; i < dev->data->nb_rx_queues; i++) {
--
2.21.0.windows.1
