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| author | Fan Yang <Fan_Yang@sjtu.edu.cn> | 2019-09-24 22:08:29 +0800 |
|---|---|---|
| committer | Jason Wang <jasowang@redhat.com> | 2019-10-29 10:28:07 +0800 |
| commit | 1e907a32b77e5d418538453df5945242e43224fa (patch) | |
| tree | 86b1154f7d56546dc08bff1ca9e9113929effeed /net | |
| parent | 7788c3f2e21e35902d45809b236791383bbb613e (diff) | |
| download | qemu-1e907a32b77e5d418538453df5945242e43224fa.zip qemu-1e907a32b77e5d418538453df5945242e43224fa.tar.gz qemu-1e907a32b77e5d418538453df5945242e43224fa.tar.bz2 | |
COLO-compare: Fix incorrect `if` logic
'colo_mark_tcp_pkt' should return 'true' when packets are the same, and
'false' otherwise. However, it returns 'true' when
'colo_compare_packet_payload' returns non-zero while
'colo_compare_packet_payload' is just a 'memcmp'. The result is that
COLO-compare reports inconsistent TCP packets when they are actually
the same.
Fixes: f449c9e549c ("colo: compare the packet based on the tcp sequence number")
Cc: qemu-stable@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Fan Yang <Fan_Yang@sjtu.edu.cn>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/colo-compare.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/colo-compare.c b/net/colo-compare.c index 7489840..7ee17f2 100644 --- a/net/colo-compare.c +++ b/net/colo-compare.c @@ -319,7 +319,7 @@ static bool colo_mark_tcp_pkt(Packet *ppkt, Packet *spkt, *mark = 0; if (ppkt->tcp_seq == spkt->tcp_seq && ppkt->seq_end == spkt->seq_end) { - if (colo_compare_packet_payload(ppkt, spkt, + if (!colo_compare_packet_payload(ppkt, spkt, ppkt->header_size, spkt->header_size, ppkt->payload_size)) { *mark = COLO_COMPARE_FREE_SECONDARY | COLO_COMPARE_FREE_PRIMARY; @@ -329,7 +329,7 @@ static bool colo_mark_tcp_pkt(Packet *ppkt, Packet *spkt, /* one part of secondary packet payload still need to be compared */ if (!after(ppkt->seq_end, spkt->seq_end)) { - if (colo_compare_packet_payload(ppkt, spkt, + if (!colo_compare_packet_payload(ppkt, spkt, ppkt->header_size + ppkt->offset, spkt->header_size + spkt->offset, ppkt->payload_size - ppkt->offset)) { @@ -348,7 +348,7 @@ static bool colo_mark_tcp_pkt(Packet *ppkt, Packet *spkt, /* primary packet is longer than secondary packet, compare * the same part and mark the primary packet offset */ - if (colo_compare_packet_payload(ppkt, spkt, + if (!colo_compare_packet_payload(ppkt, spkt, ppkt->header_size + ppkt->offset, spkt->header_size + spkt->offset, spkt->payload_size - spkt->offset)) { |