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Menglong Dong says: ==================== net: vxlan: add skb drop reasons support In this series, we add skb drop reasons support to VXLAN, and following new skb drop reasons are introduced: SKB_DROP_REASON_VXLAN_INVALID_HDR SKB_DROP_REASON_VXLAN_VNI_NOT_FOUND SKB_DROP_REASON_VXLAN_ENTRY_EXISTS SKB_DROP_REASON_VXLAN_NO_REMOTE SKB_DROP_REASON_MAC_INVALID_SOURCE SKB_DROP_REASON_IP_TUNNEL_ECN SKB_DROP_REASON_TUNNEL_TXINFO SKB_DROP_REASON_LOCAL_MAC We add some helper functions in this series, who will capture the drop reasons from pskb_may_pull_reason and return them: pskb_network_may_pull_reason() pskb_inet_may_pull_reason() And we also make the following functions return skb drop reasons: skb_vlan_inet_prepare() vxlan_remcsum() vxlan_snoop() vxlan_set_mac() Changes since v6: - fix some typos in the document for SKB_DROP_REASON_TUNNEL_TXINFO Changes since v5: - fix some typos in the document for SKB_DROP_REASON_TUNNEL_TXINFO Changes since v4: - make skb_vlan_inet_prepare() return drop reasons, instead of introduce a wrapper for it in the 3rd patch. - modify the document for SKB_DROP_REASON_LOCAL_MAC and SKB_DROP_REASON_TUNNEL_TXINFO. Changes since v3: - rename SKB_DROP_REASON_VXLAN_INVALID_SMAC to SKB_DROP_REASON_MAC_INVALID_SOURCE in the 6th patch Changes since v2: - move all the drop reasons of VXLAN to the "core", instead of introducing the VXLAN drop reason subsystem - add the 6th patch, which capture the drop reasons from vxlan_snoop() - move the commits for vxlan_remcsum() and vxlan_set_mac() after vxlan_rcv() to update the call of them accordingly - fix some format problems Changes since v1: - document all the drop reasons that we introduce - rename the drop reasons to make them more descriptive, as Ido advised - remove the 2nd patch, which introduce the SKB_DR_RESET - add the 4th patch, which adds skb_vlan_inet_prepare_reason() helper - introduce the 6th patch, which make vxlan_set_mac return drop reasons - introduce the 10th patch, which uses VXLAN_DROP_NO_REMOTE as the drop reasons, as Ido advised ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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