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a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1669217653; x=1700753653; h=date:from:to:cc:subject:message-id:references: in-reply-to:mime-version; bh=qbB138/7iikZ/+lcxHuaGkmIonFTEQvG7617Y5VtLhA=; b=MI0qJvWjkuy/y7Ofdl7tq9fPP/laUXlmU/GyoynDBbM1uMvWEw+hkqQ9 vospHIgYoSECjQ5oXaoc+3f3KDycZZa2w+GPO3RDqnWwRjlcRVVe4MFaL J7ZL4cI3+fomCMGuLqiFeBQZid9FstygttZUguvmFNwCHq6WkFk8V8skS gczsDFvsLQ4sQ73UUfciJ81mU0pxZbpuB1Rr4MezfbP/dZguxqDKKi2hb w9sM5aAyRM41nvBFGSiKwV15GB9YnyTSrXk9LUukYYkA0OBMeUNhUBr20 b/48ZeFj0mNcefIlE91eMEiA+PRt7hH8UMCij8a//9CKO1Biek4MKb0EE g==; X-Mailman-Original-Authentication-Results: smtp2.osuosl.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=MI0qJvWj X-Mailman-Original-Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com; Subject: Re: [Intel-wired-lan] [PATCH v2] igb: Allocate MSI-X vector when testing X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Yuri Benditovich , Eric Dumazet , Jakub Kicinski , Yan Vugenfirer , intel-wired-lan@lists.osuosl.org, Paolo Abeni , "David S. Miller" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" On Tue, Nov 22, 2022 at 10:11:45PM +0900, Akihiko Odaki wrote: > Without this change, the interrupt test fail with MSI-X environment: > > $ sudo ethtool -t enp0s2 offline > [ 43.921783] igb 0000:00:02.0: offline testing starting > [ 44.855824] igb 0000:00:02.0 enp0s2: igb: enp0s2 NIC Link is Down > [ 44.961249] igb 0000:00:02.0 enp0s2: igb: enp0s2 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX > [ 51.272202] igb 0000:00:02.0: testing shared interrupt > [ 56.996975] igb 0000:00:02.0 enp0s2: igb: enp0s2 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX > The test result is FAIL > The test extra info: > Register test (offline) 0 > Eeprom test (offline) 0 > Interrupt test (offline) 4 > Loopback test (offline) 0 > Link test (on/offline) 0 > > Here, "4" means an expected interrupt was not delivered. > > This change routes interrupts correctly to the first MSI-X vector, and > fixes the test: Imperative mood, please - "To fix this, route interrupts correctly..." > > $ sudo ethtool -t enp0s2 offline > [ 42.762985] igb 0000:00:02.0: offline testing starting > [ 50.141967] igb 0000:00:02.0: testing shared interrupt > [ 56.163957] igb 0000:00:02.0 enp0s2: igb: enp0s2 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX > The test result is PASS > The test extra info: > Register test (offline) 0 > Eeprom test (offline) 0 > Interrupt test (offline) 0 > Loopback test (offline) 0 > Link test (on/offline) 0 > You still didn't specify the tree. If it's 'net' and you're not sure about fixes tag, then please provide some explanation to maintainers why you're not adding this. > Signed-off-by: Akihiko Odaki > --- > drivers/net/ethernet/intel/igb/igb_ethtool.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c b/drivers/net/ethernet/intel/igb/igb_ethtool.c > index e5f3e7680dc6..ff911af16a4b 100644 > --- a/drivers/net/ethernet/intel/igb/igb_ethtool.c > +++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c > @@ -1413,6 +1413,8 @@ static int igb_intr_test(struct igb_adapter *adapter, u64 *data) > *data = 1; > return -1; > } > + wr32(E1000_IVAR_MISC, E1000_IVAR_VALID << 8); > + wr32(E1000_EIMS, BIT(0)); > } else if (adapter->flags & IGB_FLAG_HAS_MSI) { > shared_int = false; > if (request_irq(irq, > -- > 2.38.1 > _______________________________________________ Intel-wired-lan mailing list Intel-wired-lan@osuosl.org https://lists.osuosl.org/mailman/listinfo/intel-wired-lan