From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from schwarzbier.salab.cic.nsn-rdnet.net (unknown [194.251.119.201]) by dpdk.org (Postfix) with ESMTP id C305F58D5 for ; Mon, 21 Oct 2013 09:09:05 +0200 (CEST) Received: by schwarzbier.salab.cic.nsn-rdnet.net (Postfix, from userid 505) id 66DB41293F; Mon, 21 Oct 2013 10:09:54 +0300 (EEST) From: Qinglai Xiao To: dev@dpdk.org Date: Mon, 21 Oct 2013 10:09:44 +0300 Message-Id: <1382339384-44601-1-git-send-email-jigsaw@gmail.com> X-Mailer: git-send-email 1.7.1 Subject: [dpdk-dev] [PATCH] ixgbe 82599: Query assignment of queues to Virtual Function. X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Oct 2013 07:09:06 -0000 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 | 32 ++++++++++++++++++++++++++++++++ 1 files changed, 32 insertions(+), 0 deletions(-) diff --git a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c index f217564..991e1b3 100644 --- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c +++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c @@ -750,6 +750,34 @@ eth_ixgbe_dev_init(__attribute__((unused)) struct eth_driver *eth_drv, return 0; } +static void ixgbevf_negotiate_api(struct ixgbe_hw *hw) +{ + int api[] = { ixgbe_mbox_api_11, + ixgbe_mbox_api_10, + ixgbe_mbox_api_unknown }; + int err = 0, idx = 0; + + while (api[idx] != ixgbe_mbox_api_unknown) { + err = ixgbevf_negotiate_api_version(hw, api[idx]); + if (!err) + break; + idx++; + } +} + +static void ixgbevf_get_queue_num(struct ixgbe_hw *hw) +{ + /* Traffic classes are not supported by now */ + unsigned int tcs, tc; + + /* + * In case that PF fails to provide Rx/Tx queue number, + * max_tx_queues and max_rx_queues remain to be 1. + */ + ixgbevf_get_queues(hw, &tcs, &tc); +} + + /* * Virtual Function device init */ @@ -818,6 +846,10 @@ 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_negotiate_api(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