[Qemu-devel] [PATCH v2] Fix buffer run out in eepro100.

[Bo Yang <boyang@suse.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 <boyang@suse.com>
---
 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