diff options
| author | Menglong Dong <menglong8.dong@gmail.com> | 2024-10-09 10:28:25 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-09-09 18:58:11 +0200 |
| commit | e89198454fb62bc8b0d8d020e8cf72c2f6bf8352 (patch) | |
| tree | ac04d80bc8dcd1f79925861f36005b0b6b9c008a | |
| parent | 4ff4f3104da6507e0f118c63c4560dfdeb59dce3 (diff) | |
net: vxlan: make vxlan_set_mac() return drop reasons
[ Upstream commit d209706f562ee4fa81bdf24cf6b679c3222aa06c ]
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>
Stable-dep-of: 1f5d2fd1ca04 ("vxlan: Fix NPD in {arp,neigh}_reduce() when using nexthop objects")
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/vxlan/vxlan_core.c | 19 | ||||
| -rw-r--r-- | include/net/dropreason-core.h | 6 |
2 files changed, 16 insertions, 9 deletions
diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c index 58590ddbc6a1..d9077698c5a8 100644 --- a/drivers/net/vxlan/vxlan_core.c +++ b/drivers/net/vxlan/vxlan_core.c @@ -1605,9 +1605,9 @@ out: unparsed->vx_flags &= ~VXLAN_GBP_USED_BITS; } -static bool vxlan_set_mac(struct vxlan_dev *vxlan, - struct vxlan_sock *vs, - struct sk_buff *skb, __be32 vni) +static enum skb_drop_reason vxlan_set_mac(struct vxlan_dev *vxlan, + struct vxlan_sock *vs, + struct sk_buff *skb, __be32 vni) { union vxlan_addr saddr; u32 ifindex = skb->dev->ifindex; @@ -1618,7 +1618,7 @@ static bool vxlan_set_mac(struct vxlan_dev *vxlan, /* Ignore packet loops (and multicast echo) */ if (ether_addr_equal(eth_hdr(skb)->h_source, vxlan->dev->dev_addr)) - return false; + return SKB_DROP_REASON_LOCAL_MAC; /* Get address from the outer IP header */ if (vxlan_get_sk_family(vs) == AF_INET) { @@ -1631,11 +1631,11 @@ static bool vxlan_set_mac(struct vxlan_dev *vxlan, #endif } - if ((vxlan->cfg.flags & VXLAN_F_LEARN) && - vxlan_snoop(skb->dev, &saddr, eth_hdr(skb)->h_source, ifindex, vni)) - return false; + if (!(vxlan->cfg.flags & VXLAN_F_LEARN)) + return SKB_NOT_DROPPED_YET; - return true; + return vxlan_snoop(skb->dev, &saddr, eth_hdr(skb)->h_source, + ifindex, vni); } static bool vxlan_ecn_decapsulate(struct vxlan_sock *vs, void *oiph, @@ -1768,7 +1768,8 @@ static int vxlan_rcv(struct sock *sk, struct sk_buff *skb) } if (!raw_proto) { - if (!vxlan_set_mac(vxlan, vs, skb, vni)) + reason = vxlan_set_mac(vxlan, vs, skb, vni); + if (reason) goto drop; } else { skb_reset_mac_header(skb); diff --git a/include/net/dropreason-core.h b/include/net/dropreason-core.h index 1cb8d7c953be..fbf92d442c1b 100644 --- a/include/net/dropreason-core.h +++ b/include/net/dropreason-core.h @@ -97,6 +97,7 @@ FN(MAC_INVALID_SOURCE) \ FN(VXLAN_ENTRY_EXISTS) \ FN(IP_TUNNEL_ECN) \ + FN(LOCAL_MAC) \ FNe(MAX) /** @@ -444,6 +445,11 @@ enum skb_drop_reason { */ 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 */ |