From mboxrd@z Thu Jan 1 00:00:00 1970 From: Haiyang Zhang Subject: [PATCH net-next,3/3] hv_netvsc: Add initialization of tx_table in netvsc_device_add() Date: Fri, 13 Oct 2017 12:28:05 -0700 Message-ID: <20171013192805.18183-4-haiyangz@exchange.microsoft.com> References: <20171013192805.18183-1-haiyangz@exchange.microsoft.com> Reply-To: haiyangz@microsoft.com Cc: haiyangz@microsoft.com, kys@microsoft.com, sthemmin@microsoft.com, olaf@aepfle.de, vkuznets@redhat.com, linux-kernel@vger.kernel.org To: davem@davemloft.net, netdev@vger.kernel.org Return-path: In-Reply-To: <20171013192805.18183-1-haiyangz@exchange.microsoft.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Haiyang Zhang tx_table is part of the private data of kernel net_device. It is only zero-ed out when allocating net_device. We may recreate netvsc_device w/o recreating net_device, so the private netdev data, including tx_table, are not zeroed. It may contain channel numbers for the older netvsc_device. This patch adds initialization of tx_table each time we recreate netvsc_device. Signed-off-by: Haiyang Zhang --- drivers/net/hyperv/netvsc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index d34cf37e949d..5bb6a20072dd 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -1255,6 +1255,9 @@ struct netvsc_device *netvsc_device_add(struct hv_device *device, if (!net_device) return ERR_PTR(-ENOMEM); + for (i = 0; i < VRSS_SEND_TAB_SIZE; i++) + net_device_ctx->tx_table[i] = 0; + net_device->ring_size = ring_size; /* Because the device uses NAPI, all the interrupt batching and -- 2.14.1