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ofproto-dpif-xlate: Identify STP BPDUs more specifically.

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Apart from STP, EVB extension of LLDP as well as IEEE 802.1QBG use the
Nearest Customer Bridge (NCB) DMAC which has a value of 0180.c200.0000.
STP can be distinguished by Ethertype from these protocols.

Signed-off-by: Padmanabhan Krishnan <kprad1@yahoo.com>
[blp@nicira.com rewrote the details of the patch]
Signed-off-by: Ben Pfaff <blp@nicira.com>
Tested-by: Padmanabhan Krishnan <kprad1@yahoo.com>
This commit is contained in:
Padmanabhan Krishnan
2014-04-24 13:18:18 -07:00
committed by Ben Pfaff
parent 83709dfafb
commit bbbca389c0
3 changed files with 11 additions and 4 deletions
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6
lib/flow.h
View File

@@ -617,4 +617,10 @@ static inline bool is_icmpv6(const struct flow *flow)
&& flow->nw_proto == IPPROTO_ICMPV6);
}
static inline bool is_stp(const struct flow *flow)
{
return (eth_addr_equals(flow->dl_dst, eth_addr_stp)
&& flow->dl_type == htons(FLOW_DL_TYPE_NONE));
}
#endif /* flow.h */