From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:54151) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T6gOl-0004ny-NT for qemu-devel@nongnu.org; Wed, 29 Aug 2012 07:25:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1T6gOh-0005JT-JP for qemu-devel@nongnu.org; Wed, 29 Aug 2012 07:25:27 -0400 Received: from mail-bk0-f45.google.com ([209.85.214.45]:48255) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T6gOh-0005JL-Bk for qemu-devel@nongnu.org; Wed, 29 Aug 2012 07:25:23 -0400 Received: by bkcji1 with SMTP id ji1so257211bkc.4 for ; Wed, 29 Aug 2012 04:25:22 -0700 (PDT) Sender: Bo Yang From: Bo Yang Date: Wed, 29 Aug 2012 19:26:11 +0800 Message-Id: <1346239571-23359-1-git-send-email-boyang@suse.com> Subject: [Qemu-devel] [PATCH v2] Fix buffer run out in eepro100. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: stefanha@gmail.com This is reported by QA. When installing os with pxe, after the initial kernel and initrd are loaded, the procedure tries to copy files from install server to local harddisk, the network becomes stall because of running out of receive descriptor. Signed-off-by: Bo Yang --- hw/eepro100.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/hw/eepro100.c b/hw/eepro100.c index 50d117e..52a18ad 100644 --- a/hw/eepro100.c +++ b/hw/eepro100.c @@ -1036,6 +1036,8 @@ static void eepro100_ru_command(EEPRO100State * s, uint8_t val) } set_ru_state(s, ru_ready); s->ru_offset = e100_read_reg4(s, SCBPointer); + qemu_flush_queued_packets(&s->nic->nc); + qemu_notify_event(); TRACE(OTHER, logout("val=0x%02x (rx start)\n", val)); break; case RX_RESUME: @@ -1770,7 +1772,8 @@ static ssize_t nic_receive(NetClientState *nc, const uint8_t * buf, size_t size) if (rfd_command & COMMAND_EL) { /* EL bit is set, so this was the last frame. */ logout("receive: Running out of frames\n"); - set_ru_state(s, ru_suspended); + set_ru_state(s, ru_no_resources); + eepro100_rnr_interrupt(s); } if (rfd_command & COMMAND_S) { /* S bit is set. */ -- 1.6.0.2