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| author |   Roopa Prabhu <roopa@cumulusnetworks.com> | 2017-08-30 22:18:13 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-08-31 11:42:41 -0700 |
| commit | e3cfddd577e763496c25ddb855cfff48b1174b63 (patch) | |
| tree | 876459926bede43730c9cbc72d2440b8faa36632 | |
| parent | net_sched: add reverse binding for tc class (diff) | |
| download | linux-dev-e3cfddd577e763496c25ddb855cfff48b1174b63.tar.xz linux-dev-e3cfddd577e763496c25ddb855cfff48b1174b63.zip | |
bridge: add tracepoint in br_fdb_update
This extends bridge fdb table tracepoints to also cover
learned fdb entries in the br_fdb_update path. Note that
unlike other tracepoints I have moved this to when the fdb
is modified because this is in the datapath and can generate
a lot of noise in the trace output. br_fdb_update is also called
from added_by_user context in the NTF_USE case which is already
traced ..hence the !added_by_user check.
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/trace/events/bridge.h | 31 | ||||
| -rw-r--r-- | net/bridge/br_fdb.c | 5 | ||||
| -rw-r--r-- | net/core/net-traces.c | 1 |
3 files changed, 36 insertions, 1 deletions
diff --git a/include/trace/events/bridge.h b/include/trace/events/bridge.h index 0f1cde00af11..1bee3e7fdf32 100644 --- a/include/trace/events/bridge.h +++ b/include/trace/events/bridge.h @@ -92,6 +92,37 @@ TRACE_EVENT(fdb_delete, __entry->addr[4], __entry->addr[5], __entry->vid) ); +TRACE_EVENT(br_fdb_update, + + TP_PROTO(struct net_bridge *br, struct net_bridge_port *source, + const unsigned char *addr, u16 vid, bool added_by_user), + + TP_ARGS(br, source, addr, vid, added_by_user), + + TP_STRUCT__entry( + __string(br_dev, br->dev->name) + __string(dev, source->dev->name) + __array(unsigned char, addr, ETH_ALEN) + __field(u16, vid) + __field(bool, added_by_user) + ), + + TP_fast_assign( + __assign_str(br_dev, br->dev->name); + __assign_str(dev, source->dev->name); + memcpy(__entry->addr, addr, ETH_ALEN); + __entry->vid = vid; + __entry->added_by_user = added_by_user; + ), + + TP_printk("br_dev %s source %s addr %02x:%02x:%02x:%02x:%02x:%02x vid %u added_by_user %d", + __get_str(br_dev), __get_str(dev), __entry->addr[0], + __entry->addr[1], __entry->addr[2], __entry->addr[3], + __entry->addr[4], __entry->addr[5], __entry->vid, + __entry->added_by_user) +); + + #endif /* _TRACE_BRIDGE_H */ /* This part must be outside protection */ diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index be5e1da6d824..4ea5c8bbe286 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -583,8 +583,10 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, fdb->updated = now; if (unlikely(added_by_user)) fdb->added_by_user = 1; - if (unlikely(fdb_modified)) + if (unlikely(fdb_modified)) { + trace_br_fdb_update(br, source, addr, vid, added_by_user); fdb_notify(br, fdb, RTM_NEWNEIGH); + } } } else { spin_lock(&br->hash_lock); @@ -593,6 +595,7 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, if (fdb) { if (unlikely(added_by_user)) fdb->added_by_user = 1; + trace_br_fdb_update(br, source, addr, vid, added_by_user); fdb_notify(br, fdb, RTM_NEWNEIGH); } } diff --git a/net/core/net-traces.c b/net/core/net-traces.c index 4a0292c97070..1132820c8e62 100644 --- a/net/core/net-traces.c +++ b/net/core/net-traces.c @@ -42,6 +42,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(fib6_table_lookup); EXPORT_TRACEPOINT_SYMBOL_GPL(br_fdb_add); EXPORT_TRACEPOINT_SYMBOL_GPL(br_fdb_external_learn_add); EXPORT_TRACEPOINT_SYMBOL_GPL(fdb_delete); +EXPORT_TRACEPOINT_SYMBOL_GPL(br_fdb_update); #endif EXPORT_TRACEPOINT_SYMBOL_GPL(kfree_skb); |