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net: vxlan: make vxlan_set_mac() return drop reasons

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Change the return type of vxlan_set_mac() from bool to enum
skb_drop_reason. In this commit, the drop reason
"SKB_DROP_REASON_LOCAL_MAC" is introduced for the case that the source
mac of the packet is a local mac.

Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Menglong Dong
2024-10-09 10:28:25 +08:00
committed by David S. Miller
parent 289fd4e752
commit d209706f56
2 changed files with 16 additions and 9 deletions
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6
include/net/dropreason-core.h
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@@ -97,6 +97,7 @@
FN(MAC_INVALID_SOURCE) \
FN(VXLAN_ENTRY_EXISTS) \
FN(IP_TUNNEL_ECN) \
FN(LOCAL_MAC) \
FNe(MAX)
/**
@@ -443,6 +444,11 @@ enum skb_drop_reason {
* RFC 6040 4.2, see __INET_ECN_decapsulate() for detail.
*/
SKB_DROP_REASON_IP_TUNNEL_ECN,
/**
* @SKB_DROP_REASON_LOCAL_MAC: the source MAC address is equal to
* the MAC address of the local netdev.
*/
SKB_DROP_REASON_LOCAL_MAC,
/**
* @SKB_DROP_REASON_MAX: the maximum of core drop reasons, which
* shouldn't be used as a real 'reason' - only for tracing code gen