From mboxrd@z Thu Jan 1 00:00:00 1970 From: Qinglai Xiao Subject: [PATCH] ixgbe 82599: Query assignment of queues to Virtual Function Date: Mon, 21 Oct 2013 17:11:14 +0300 Message-ID: <1382364674-27098-1-git-send-email-jigsaw@gmail.com> To: dev-VfR2kkLFssw@public.gmane.org Return-path: List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces-VfR2kkLFssw@public.gmane.org Sender: "dev" Physical Function assignes Tx/Rx queues to each VF 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 --- lib/librte_pmd_ixgbe/ixgbe_ethdev.c | 19 +++++++++++++++++++ 1 files changed, 19 insertions(+), 0 deletions(-) diff --git a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c index f217564..e269ad7 100644 --- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c +++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c @@ -750,6 +750,22 @@ 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 11 level. + * 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 */ @@ -818,6 +834,9 @@ 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); -- 1.7.1