Signed-off-by: YAMAMOTO Takashi <[email protected]>
---
 ryu/lib/packet/bgp.py | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/ryu/lib/packet/bgp.py b/ryu/lib/packet/bgp.py
index 8643fa0..ffd332a 100644
--- a/ryu/lib/packet/bgp.py
+++ b/ryu/lib/packet/bgp.py
@@ -54,11 +54,11 @@ BGP_ERROR_CEASE = 6
 
 # NOTIFICATION Error Subcode for BGP_ERROR_MESSAGE_HEADER_ERROR
 BGP_ERROR_SUB_CONNECTION_NOT_SYNCHRONIZED = 1
-BGP_ERROR_SUB_BAD_MESSAGE_LENGTH = 2
-BGP_ERROR_SUB_BAD_MESSAGE_TYPE = 3
+BGP_ERROR_SUB_BAD_MESSAGE_LENGTH = 2  # Data: the erroneous Length field
+BGP_ERROR_SUB_BAD_MESSAGE_TYPE = 3  # Data: the erroneous Type field
 
 # NOTIFICATION Error Subcode for BGP_ERROR_OPEN_MESSAGE_ERROR
-BGP_ERROR_SUB_UNSUPPORTED_VERSION_NUMBER = 1
+BGP_ERROR_SUB_UNSUPPORTED_VERSION_NUMBER = 1  # Data: 2 octet version number
 BGP_ERROR_SUB_BAD_PEER_AS = 2
 BGP_ERROR_SUB_BAD_BGP_IDENTIFIER = 3
 BGP_ERROR_SUB_UNSUPPORTED_OPTIONAL_PARAMETER = 4
@@ -67,19 +67,19 @@ BGP_ERROR_SUB_UNACCEPTABLE_HOLD_TIME = 6
 
 # NOTIFICATION Error Subcode for BGP_ERROR_UPDATE_MESSAGE_ERROR
 BGP_ERROR_SUB_MALFORMED_ATTRIBUTE_LIST = 1
-BGP_ERROR_SUB_UNRECOGNIZED_WELL_KNOWN_ATTRIBUTE = 2
-BGP_ERROR_SUB_MISSING_WELL_KNOWN_ATTRIBUTE = 3
-BGP_ERROR_SUB_ATTRIBUTE_FLAGS_ERROR = 4
-BGP_ERROR_SUB_ATTRIBUTE_LENGTH_ERROR = 5
-BGP_ERROR_SUB_INVALID_ORIGIN_ATTRIBUTE = 6
+BGP_ERROR_SUB_UNRECOGNIZED_WELL_KNOWN_ATTRIBUTE = 2  # Data: type of the attr
+BGP_ERROR_SUB_MISSING_WELL_KNOWN_ATTRIBUTE = 3  # Data: ditto
+BGP_ERROR_SUB_ATTRIBUTE_FLAGS_ERROR = 4  # Data: the attr (type, len, value)
+BGP_ERROR_SUB_ATTRIBUTE_LENGTH_ERROR = 5  # Data: ditto
+BGP_ERROR_SUB_INVALID_ORIGIN_ATTRIBUTE = 6  # Data: ditto
 # 7 is deprecated RFC 1771 AS Routing Loop
-BGP_ERROR_SUB_INVALID_NEXT_HOP_ATTRIBUTE = 8
-BGP_ERROR_SUB_OPTIONAL_ATTRIBUTE_ERROR = 9
+BGP_ERROR_SUB_INVALID_NEXT_HOP_ATTRIBUTE = 8  # Data: ditto
+BGP_ERROR_SUB_OPTIONAL_ATTRIBUTE_ERROR = 9  # Data: ditto
 BGP_ERROR_SUB_INVALID_NETWORK_FIELD = 10
 BGP_ERROR_SUB_MALFORMED_AS_PATH = 11
 
 # NOTIFICATION Error Subcode for BGP_ERROR_CEASE  (RFC 4486)
-BGP_ERROR_SUB_MAXIMUM_NUMBER_OF_PREFIXES_REACHED = 1
+BGP_ERROR_SUB_MAXIMUM_NUMBER_OF_PREFIXES_REACHED = 1  # Data: optional
 BGP_ERROR_SUB_ADMINISTRATIVE_SHUTDOWN = 2
 BGP_ERROR_SUB_PEER_DECONFIGURED = 3
 BGP_ERROR_SUB_ADMINISTRATIVE_RESET = 4
-- 
1.8.3.1


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