From 913440249ea2e697177e9d43167ac325a8dfe907 Mon Sep 17 00:00:00 2001 From: Fam Zheng Date: Wed, 15 Jul 2015 18:19:05 +0800 Subject: [PATCH] usbnet: Drop usbnet_can_receive usbnet_receive already drops packet if rndis_state is not RNDIS_DATA_INITIALIZED, and queues packet if in buffer is not available. The only difference is s->dev.config but that is similar to rndis_state. Drop usbnet_can_receive and move these checks to usbnet_receive, so that we don't need to explicitly flush the queue when s->dev.config changes value. Signed-off-by: Fam Zheng Reviewed-by: Stefan Hajnoczi Reviewed-by: Jason Wang Message-id: 1436955553-22791-5-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi --- hw/usb/dev-network.c | 20 ++++---------------- 1 file changed, 4 insertions(+), 16 deletions(-) diff --git a/hw/usb/dev-network.c b/hw/usb/dev-network.c index 5eeb4c6b06..7800ceea5b 100644 --- a/hw/usb/dev-network.c +++ b/hw/usb/dev-network.c @@ -1268,6 +1268,10 @@ static ssize_t usbnet_receive(NetClientState *nc, const uint8_t *buf, size_t siz uint8_t *in_buf = s->in_buf; size_t total_size = size; + if (!s->dev.config) { + return -1; + } + if (is_rndis(s)) { if (s->rndis_state != RNDIS_DATA_INITIALIZED) { return -1; @@ -1309,21 +1313,6 @@ static ssize_t usbnet_receive(NetClientState *nc, const uint8_t *buf, size_t siz return size; } -static int usbnet_can_receive(NetClientState *nc) -{ - USBNetState *s = qemu_get_nic_opaque(nc); - - if (!s->dev.config) { - return 0; - } - - if (is_rndis(s) && s->rndis_state != RNDIS_DATA_INITIALIZED) { - return 1; - } - - return !s->in_len; -} - static void usbnet_cleanup(NetClientState *nc) { USBNetState *s = qemu_get_nic_opaque(nc); @@ -1343,7 +1332,6 @@ static void usb_net_handle_destroy(USBDevice *dev) static NetClientInfo net_usbnet_info = { .type = NET_CLIENT_OPTIONS_KIND_NIC, .size = sizeof(NICState), - .can_receive = usbnet_can_receive, .receive = usbnet_receive, .cleanup = usbnet_cleanup, };