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authorfaicker.mo <faicker.mo@ucloud.cn>2018-11-14 16:51:34 +0800
committerNeale Ranns <nranns@cisco.com>2019-04-14 23:48:58 +0000
commit2bccb181c79f56090107b55ed2d0a551cda12643 (patch)
tree268b3cb59ffabe6ac3c5601e20d8524b7a742e42 /src/vnet
parent89e66434a2c93a07d7e913bb66b2be5e6e6df14c (diff)
ip4: don't format upper layer if it's a fragment
Parsing ipv4 upper layer is not meaningful if it's a fragment packet except the first. Change-Id: I442fb7ec01244fde8c4f7656a8ba633d0aa0f97e Signed-off-by: Faicker Mo <faicker.mo@ucloud.cn>
Diffstat (limited to 'src/vnet')
-rw-r--r--src/vnet/ip/ip4_format.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/vnet/ip/ip4_format.c b/src/vnet/ip/ip4_format.c
index 5399e44d93a..6c31b422225 100644
--- a/src/vnet/ip/ip4_format.c
+++ b/src/vnet/ip/ip4_format.c
@@ -178,6 +178,9 @@ format_ip4_header (u8 * s, va_list * args)
_(CONGESTION);
#undef _
}
+ /* Fragment packet but not the first. */
+ if (o != 0)
+ return s;
}
/* Recurse into next protocol layer. */