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From: David Marchand <david.marchand@6wind.com>
To: dev@dpdk.org
Date: Tue, 17 Jun 2014 20:09:29 +0200
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Subject: [dpdk-dev] [PATCH v3 4/7] ethdev: introduce enable_scatter rx mode
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We might want to be sure the scatter packets reception handler is selected in a
pmd. This makes it possible to then change mtu later, without the need of
restarting a port.
It is then the pmd duty to tell it enabled the scatter reception handler by
setting dev->data->scattered_rx to 1.
Signed-off-by: David Marchand <david.marchand@6wind.com>
---
lib/librte_ether/rte_ethdev.h | 3 ++-
lib/librte_pmd_e1000/em_rxtx.c | 5 +++++
lib/librte_pmd_e1000/igb_rxtx.c | 10 ++++++++++
lib/librte_pmd_ixgbe/ixgbe_rxtx.c | 10 ++++++++++
4 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 581259d..2b98700 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -307,7 +307,8 @@ struct rte_eth_rxmode {
hw_vlan_strip : 1, /**< VLAN strip enable. */
hw_vlan_extend : 1, /**< Extended VLAN enable. */
jumbo_frame : 1, /**< Jumbo Frame Receipt enable. */
- hw_strip_crc : 1; /**< Enable CRC stripping by hardware. */
+ hw_strip_crc : 1, /**< Enable CRC stripping by hardware. */
+ enable_scatter : 1; /**< Enable scatter packets rx handler */
};
/**
diff --git a/lib/librte_pmd_e1000/em_rxtx.c b/lib/librte_pmd_e1000/em_rxtx.c
index 1575e79..e5f1933 100644
--- a/lib/librte_pmd_e1000/em_rxtx.c
+++ b/lib/librte_pmd_e1000/em_rxtx.c
@@ -1714,6 +1714,11 @@ eth_em_rx_init(struct rte_eth_dev *dev)
}
}
+ if (dev->data->dev_conf.rxmode.enable_scatter) {
+ dev->rx_pkt_burst = eth_em_recv_scattered_pkts;
+ dev->data->scattered_rx = 1;
+ }
+
/*
* Setup the Checksum Register.
* Receive Full-Packet Checksum Offload is mutually exclusive with RSS.
diff --git a/lib/librte_pmd_e1000/igb_rxtx.c b/lib/librte_pmd_e1000/igb_rxtx.c
index 9f0310d..aea898c 100644
--- a/lib/librte_pmd_e1000/igb_rxtx.c
+++ b/lib/librte_pmd_e1000/igb_rxtx.c
@@ -2008,6 +2008,11 @@ eth_igb_rx_init(struct rte_eth_dev *dev)
E1000_WRITE_REG(hw, E1000_RXDCTL(rxq->reg_idx), rxdctl);
}
+ if (dev->data->dev_conf.rxmode.enable_scatter) {
+ dev->rx_pkt_burst = eth_igb_recv_scattered_pkts;
+ dev->data->scattered_rx = 1;
+ }
+
/*
* Setup BSIZE field of RCTL register, if needed.
* Buffer sizes >= 1024 are not [supposed to be] setup in the RCTL
@@ -2277,6 +2282,11 @@ eth_igbvf_rx_init(struct rte_eth_dev *dev)
E1000_WRITE_REG(hw, E1000_RXDCTL(i), rxdctl);
}
+ if (dev->data->dev_conf.rxmode.enable_scatter) {
+ dev->rx_pkt_burst = eth_igb_recv_scattered_pkts;
+ dev->data->scattered_rx = 1;
+ }
+
/*
* Setup the HW Rx Head and Tail Descriptor Pointers.
* This needs to be done after enable.
diff --git a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
index ca72e75..f487859 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
@@ -3486,6 +3486,11 @@ ixgbe_dev_rx_init(struct rte_eth_dev *dev)
}
}
+ if (dev->data->dev_conf.rxmode.enable_scatter) {
+ dev->rx_pkt_burst = ixgbe_recv_scattered_pkts;
+ dev->data->scattered_rx = 1;
+ }
+
/*
* Device configured with multiple RX queues.
*/
@@ -3961,6 +3966,11 @@ ixgbevf_dev_rx_init(struct rte_eth_dev *dev)
}
}
+ if (dev->data->dev_conf.rxmode.enable_scatter) {
+ dev->rx_pkt_burst = ixgbe_recv_scattered_pkts;
+ dev->data->scattered_rx = 1;
+ }
+
return 0;
}
--
1.7.10.4