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From 9318bd2b84409c6f3810d410c6918fefec072408 Mon Sep 17 00:00:00 2001
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From: Vlad Yasevich <vyasevic@redhat.com>
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Date: Wed, 16 Dec 2015 02:58:23 +0100
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Subject: [PATCH 6/6] rtl8139: Do not consume the packet during overflow in
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standard mode.
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Message-id: <1450234703-7606-3-git-send-email-vyasevic@redhat.com>
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Patchwork-id: 68618
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O-Subject: [RHEL7.3 qemu-kvm PATCH 2/2] rtl8139: Do not consume the packet during overflow in standard mode.
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Bugzilla: 1252757
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
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RH-Acked-by: Xiao Wang <jasowang@redhat.com>
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When operation in standard mode, we currently return the size
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of packet during buffer overflow. This consumes the overflow
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packet. Return 0 instead so we can re-process the overflow packet
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when we have room.
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This fixes issues with lost/dropped fragments of large messages.
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Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
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Reviewed-by: Jason Wang <jasowang@redhat.com>
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Message-id: 1441121206-6997-3-git-send-email-vyasevic@redhat.com
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Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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(cherry picked from commit 26c4e7ca72d970d120f0f51244bc8d37458512a0)
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Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/net/rtl8139.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/hw/net/rtl8139.c b/hw/net/rtl8139.c
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index 6a167df..aa2503d 100644
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--- a/hw/net/rtl8139.c
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+++ b/hw/net/rtl8139.c
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@@ -1148,7 +1148,7 @@ static ssize_t rtl8139_do_receive(NetClientState *nc, const uint8_t *buf, size_t
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s->IntrStatus |= RxOverflow;
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++s->RxMissed;
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rtl8139_update_irq(s);
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- return size_;
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+ return 0;
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}
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packet_header |= RxStatusOK;
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--
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1.8.3.1
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