DPDK patches and discussions
 help / color / mirror / Atom feed
* [dpdk-dev] [PATCH] igb: handle VF LPE mailbox message
@ 2015-03-18 12:01 Sergio Gonzalez Monroy
  2015-03-18 12:04 ` Gonzalez Monroy, Sergio
  2015-03-18 16:01 ` Ananyev, Konstantin
  0 siblings, 2 replies; 4+ messages in thread
From: Sergio Gonzalez Monroy @ 2015-03-18 12:01 UTC (permalink / raw)
  To: dev

This patch adds the handle function for the LPE mailbox message (VF to
PF) to set maximum packet size, which can be used to enable jumbo
frame support.

Signed-off-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
---
 lib/librte_pmd_e1000/igb_pf.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/lib/librte_pmd_e1000/igb_pf.c b/lib/librte_pmd_e1000/igb_pf.c
index bc3816a..2d49379 100644
--- a/lib/librte_pmd_e1000/igb_pf.c
+++ b/lib/librte_pmd_e1000/igb_pf.c
@@ -395,6 +395,31 @@ igb_vf_set_vlan(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
 }
 
 static int
+igb_vf_set_rlpml(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
+{
+	struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	uint16_t rlpml = msgbuf[1] & E1000_VMOLR_RLPML_MASK;
+	uint32_t max_frame = rlpml + ETHER_HDR_LEN + ETHER_CRC_LEN;
+	uint32_t vmolr;
+
+	if ((max_frame < ETHER_MIN_LEN) || (max_frame > ETHER_MAX_JUMBO_FRAME_LEN))
+		return -1;
+
+	vmolr = E1000_READ_REG(hw, E1000_VMOLR(vf));
+
+	vmolr &= ~E1000_VMOLR_RLPML_MASK;
+	vmolr |= rlpml;
+
+	/* Enable Long Packet support */
+	vmolr |= E1000_VMOLR_LPE;
+
+	E1000_WRITE_REG(hw, E1000_VMOLR(vf), vmolr);
+	E1000_WRITE_FLUSH(hw);
+
+	return 0;
+}
+
+static int
 igb_rcv_msg_from_vf(struct rte_eth_dev *dev, uint16_t vf)
 {
 	uint16_t mbx_size = E1000_VFMAILBOX_SIZE;
@@ -428,6 +453,9 @@ igb_rcv_msg_from_vf(struct rte_eth_dev *dev, uint16_t vf)
 	case E1000_VF_SET_MULTICAST:
 		retval = igb_vf_set_multicast(dev, vf, msgbuf);
 		break;
+	case E1000_VF_SET_LPE:
+		retval = igb_vf_set_rlpml(dev, vf, msgbuf);
+		break;
 	case E1000_VF_SET_VLAN:
 		retval = igb_vf_set_vlan(dev, vf, msgbuf);
 		break;
-- 
1.9.3

^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2015-04-28 16:19 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-03-18 12:01 [dpdk-dev] [PATCH] igb: handle VF LPE mailbox message Sergio Gonzalez Monroy
2015-03-18 12:04 ` Gonzalez Monroy, Sergio
2015-03-18 16:01 ` Ananyev, Konstantin
2015-04-28 16:19   ` Thomas Monjalon

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).