diff options
| author | Eric Dumazet <edumazet@google.com> | 2026-04-07 18:07:10 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-04-09 05:19:18 +0300 |
| commit | 202ab599413c9a66e3e4449886b85c7b21314d50 (patch) | |
| tree | b7a4de0b384739f66abb5504025ec8d57e5b611a /include | |
| parent | ea25e03da7a79e0413f1606d4a407a97ed41628a (diff) | |
| download | linux-202ab599413c9a66e3e4449886b85c7b21314d50.tar.xz | |
net: dropreason: add MACVLAN_BROADCAST_BACKLOG and IPVLAN_MULTICAST_BACKLOG
ipvlan and macvlan use queues to process broadcast/multicast packets
from a work queue.
Under attack these queues can drop packets.
Add MACVLAN_BROADCAST_BACKLOG drop_reason for macvlan broadcast queue.
Add IPVLAN_MULTICAST_BACKLOG drop_reason for ipvlan multicast queue.
Use different reasons as some deployments use both ipvlan and macvlan.
Also change ipvlan_rcv_frame() to use SKB_DROP_REASON_DEV_READY
when the device is not UP.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260407150710.1640747-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/dropreason-core.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/net/dropreason-core.h b/include/net/dropreason-core.h index 51855de5d208..e0ca3904ff8e 100644 --- a/include/net/dropreason-core.h +++ b/include/net/dropreason-core.h @@ -69,6 +69,8 @@ FN(QDISC_DROP) \ FN(QDISC_BURST_DROP) \ FN(CPU_BACKLOG) \ + FN(MACVLAN_BROADCAST_BACKLOG) \ + FN(IPVLAN_MULTICAST_BACKLOG) \ FN(XDP) \ FN(TC_INGRESS) \ FN(UNHANDLED_PROTO) \ @@ -383,6 +385,16 @@ enum skb_drop_reason { * netdev_max_backlog in net.rst) or RPS flow limit */ SKB_DROP_REASON_CPU_BACKLOG, + /** + * @SKB_DROP_REASON_MACVLAN_BROADCAST_BACKLOG: failed to enqueue the skb + * to macvlan broadcast queue. + */ + SKB_DROP_REASON_MACVLAN_BROADCAST_BACKLOG, + /** + * @SKB_DROP_REASON_IPVLAN_MULTICAST_BACKLOG: failed to enqueue the skb + * to ipvlan multicast queue. + */ + SKB_DROP_REASON_IPVLAN_MULTICAST_BACKLOG, /** @SKB_DROP_REASON_XDP: dropped by XDP in input path */ SKB_DROP_REASON_XDP, /** @SKB_DROP_REASON_TC_INGRESS: dropped in TC ingress HOOK */ |