From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vlad Zolotarov Subject: [PATCH net-next v6 5/7] ixgbe: Add GET_RSS_KEY command to VF-PF channel commands set Date: Sun, 22 Mar 2015 21:01:25 +0200 Message-ID: <1427050887-19412-6-git-send-email-vladz@cloudius-systems.com> References: <1427050887-19412-1-git-send-email-vladz@cloudius-systems.com> Cc: jeffrey.t.kirsher@intel.com, avi@cloudius-systems.com, gleb@cloudius-systems.com, Vlad Zolotarov To: netdev@vger.kernel.org Return-path: Received: from mail-wi0-f180.google.com ([209.85.212.180]:38559 "EHLO mail-wi0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751859AbbCVTBl (ORCPT ); Sun, 22 Mar 2015 15:01:41 -0400 Received: by wibgn9 with SMTP id gn9so40878019wib.1 for ; Sun, 22 Mar 2015 12:01:40 -0700 (PDT) In-Reply-To: <1427050887-19412-1-git-send-email-vladz@cloudius-systems.com> Sender: netdev-owner@vger.kernel.org List-ID: For 82599 and x540 VFs and PF share the same RSS Key. Therefore we will return the same RSS key for all VFs. x550 on the other hand has a separate RSS Key for every pool. Signed-off-by: Vlad Zolotarov --- New in v5: - Use a newly added netdev op to allow/prevent the RSS Hash Key querying on a per-VF basis. New in v3: - Added a support for x550 devices. New in v1 (compared to RFC): - Use "if-else" statement instead of a "switch-case" for a single option case (in ixgbe_get_vf_rss_key()). --- drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h | 2 ++ drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 27 ++++++++++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h index f9b5eae..3f14373 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h @@ -105,6 +105,8 @@ enum ixgbe_pfvf_api_rev { #define IXGBE_VF_RETA_SZ 1 /* Number of RETA DWs to bring */ #define IXGBE_VF_RETA_OFFSET 2 /* Offset in RETA */ +#define IXGBE_VF_GET_RSS_KEY 0x0b /* get RSS key */ + /* length of permanent address message returned from PF */ #define IXGBE_VF_PERMADDR_MSG_LEN 4 /* word in permanent address message with the current multicast type */ diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c index 301bb1b..78517a1 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c @@ -1016,6 +1016,30 @@ static int ixgbe_get_vf_reta(struct ixgbe_adapter *adapter, u32 *msgbuf, u32 vf) return 0; } +static int ixgbe_get_vf_rss_key(struct ixgbe_adapter *adapter, + u32 *msgbuf, u32 vf) +{ + struct ixgbe_hw *hw = &adapter->hw; + int i; + u32 *rss_key = &msgbuf[1]; + + /* verify the PF is supporting the correct API */ + if (!adapter->vfinfo[vf].rss_query_enabled || + (adapter->vfinfo[vf].vf_api != ixgbe_mbox_api_12)) + return -EPERM; + + /* Read the RSS KEY */ + if (hw->mac.type >= ixgbe_mac_X550) { + for (i = 0; i < 10; i++) + rss_key[i] = IXGBE_READ_REG(hw, + IXGBE_PFVFRSSRK(i, vf)); + } else + for (i = 0; i < 10; i++) + rss_key[i] = IXGBE_READ_REG(hw, IXGBE_RSSRK(i)); + + return 0; +} + static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) { u32 mbx_size = IXGBE_VFMAILBOX_SIZE; @@ -1075,6 +1099,9 @@ static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf) case IXGBE_VF_GET_RETA: retval = ixgbe_get_vf_reta(adapter, msgbuf, vf); break; + case IXGBE_VF_GET_RSS_KEY: + retval = ixgbe_get_vf_rss_key(adapter, msgbuf, vf); + break; default: e_err(drv, "Unhandled Msg %8.8x\n", msgbuf[0]); retval = IXGBE_ERR_MBX; -- 2.1.0