From: Qinglai Xiao <jigsaw@gmail.com>
Date: Mon, 21 Oct 2013 14:11:14 +0000 (+0300)
Subject: ixgbe: query assignment of VF queues
X-Git-Tag: spdx-start~11013
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=27399312efbe5822c81598f8c8592d37c3735d96;p=dpdk.git
ixgbe: query assignment of VF queues
Physical Function assignes Tx/Rx queues to each Virtual Function
according to different schemes[1]. By querying through mailbox,
VF is able to get number of Tx/Rx queues assigned to it.
Note that current Intel ixgbe driver ixgbe-3.18.7 does not fully
support mailbox message IXGBE_VF_GET_QUEUES. The service routine
for IXGBE_VF_GET_QUEUES must be fixed, otherwise PF always return
1 as Tx/Rx queue number.
[1] See section 7.2.1.2.1, 7.1.2.2 and 7.10.2.7.2 of Intel 82599 10
Gbe Controller Datasheet.
Signed-off-by: Qinglai Xiao <jigsaw@gmail.com>
Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>
---
diff --git a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
index a95bc28906..22761046dd 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
@@ -772,6 +772,21 @@ eth_ixgbe_dev_init(__attribute__((unused)) struct eth_driver *eth_drv,
return 0;
}
+static void ixgbevf_get_queue_num(struct ixgbe_hw *hw)
+{
+ /* Traffic classes are not supported by now */
+ unsigned int tcs, tc;
+
+ /*
+ * Must let PF know we are at mailbox API version 1.1.
+ * Otherwise PF won't answer properly.
+ * In case that PF fails to provide Rx/Tx queue number,
+ * max_tx_queues and max_rx_queues remain to be 1.
+ */
+ if (!ixgbevf_negotiate_api_version(hw, ixgbe_mbox_api_11))
+ ixgbevf_get_queues(hw, &tcs, &tc);
+}
+
/*
* Virtual Function device init
*/
@@ -840,6 +855,9 @@ eth_ixgbevf_dev_init(__attribute__((unused)) struct eth_driver *eth_drv,
return (diag);
}
+ /* Get Rx/Tx queue count via mailbox, which is ready after reset_hw */
+ ixgbevf_get_queue_num(hw);
+
/* Allocate memory for storing MAC addresses */
eth_dev->data->mac_addrs = rte_zmalloc("ixgbevf", ETHER_ADDR_LEN *
hw->mac.num_rar_entries, 0);