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trace: events: add a few neigh tracepoints
The goal here is to trace neigh state changes covering all possible neigh update paths. Plus have a specific trace point in neigh_update to cover flags sent to neigh_update. Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Roopa Prabhu
David S. Miller
parent
9e8ccd8957
commit
9c03b282ba
2 changed files with 212 additions and 0 deletions
204
include/trace/events/neigh.h
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204
include/trace/events/neigh.h
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@ -0,0 +1,204 @@
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM neigh
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#if !defined(_TRACE_NEIGH_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_NEIGH_H
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/tracepoint.h>
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#include <net/neighbour.h>
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#define neigh_state_str(state) \
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__print_symbolic(state, \
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{ NUD_INCOMPLETE, "incomplete" }, \
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{ NUD_REACHABLE, "reachable" }, \
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{ NUD_STALE, "stale" }, \
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{ NUD_DELAY, "delay" }, \
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{ NUD_PROBE, "probe" }, \
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{ NUD_FAILED, "failed" })
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TRACE_EVENT(neigh_update,
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TP_PROTO(struct neighbour *n, const u8 *lladdr, u8 new,
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u32 flags, u32 nlmsg_pid),
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TP_ARGS(n, lladdr, new, flags, nlmsg_pid),
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TP_STRUCT__entry(
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__field(u32, family)
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__string(dev, (n->dev ? n->dev->name : "NULL"))
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__array(u8, lladdr, MAX_ADDR_LEN)
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__field(u8, lladdr_len)
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__field(u8, flags)
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__field(u8, nud_state)
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__field(u8, type)
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__field(u8, dead)
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__field(int, refcnt)
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__array(__u8, primary_key4, 4)
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__array(__u8, primary_key6, 16)
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__field(unsigned long, confirmed)
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__field(unsigned long, updated)
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__field(unsigned long, used)
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__array(u8, new_lladdr, MAX_ADDR_LEN)
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__field(u8, new_state)
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__field(u32, update_flags)
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__field(u32, pid)
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),
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TP_fast_assign(
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int lladdr_len = (n->dev ? n->dev->addr_len : MAX_ADDR_LEN);
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struct in6_addr *pin6;
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__be32 *p32;
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__entry->family = n->tbl->family;
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__assign_str(dev, (n->dev ? n->dev->name : "NULL"));
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__entry->lladdr_len = lladdr_len;
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memcpy(__entry->lladdr, n->ha, lladdr_len);
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__entry->flags = n->flags;
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__entry->nud_state = n->nud_state;
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__entry->type = n->type;
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__entry->dead = n->dead;
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__entry->refcnt = refcount_read(&n->refcnt);
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pin6 = (struct in6_addr *)__entry->primary_key6;
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p32 = (__be32 *)__entry->primary_key4;
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if (n->tbl->family == AF_INET)
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*p32 = *(__be32 *)n->primary_key;
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else
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*p32 = 0;
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#if IS_ENABLED(CONFIG_IPV6)
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if (n->tbl->family == AF_INET6) {
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pin6 = (struct in6_addr *)__entry->primary_key6;
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*pin6 = *(struct in6_addr *)n->primary_key;
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} else
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#endif
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{
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ipv6_addr_set_v4mapped(*p32, pin6);
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}
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__entry->confirmed = n->confirmed;
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__entry->updated = n->updated;
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__entry->used = n->used;
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if (lladdr)
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memcpy(__entry->new_lladdr, lladdr, lladdr_len);
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__entry->new_state = new;
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__entry->update_flags = flags;
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__entry->pid = nlmsg_pid;
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),
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TP_printk("family %d dev %s lladdr %s flags %02x nud_state %s type %02x "
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"dead %d refcnt %d primary_key4 %pI4 primary_key6 %pI6c "
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"confirmed %lu updated %lu used %lu new_lladdr %s "
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"new_state %02x update_flags %02x pid %d",
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__entry->family, __get_str(dev),
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__print_hex_str(__entry->lladdr, __entry->lladdr_len),
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__entry->flags, neigh_state_str(__entry->nud_state),
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__entry->type, __entry->dead, __entry->refcnt,
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__entry->primary_key4, __entry->primary_key6,
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__entry->confirmed, __entry->updated, __entry->used,
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__print_hex_str(__entry->new_lladdr, __entry->lladdr_len),
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__entry->new_state,
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__entry->update_flags, __entry->pid)
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);
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DECLARE_EVENT_CLASS(neigh__update,
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TP_PROTO(struct neighbour *n, int err),
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TP_ARGS(n, err),
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TP_STRUCT__entry(
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__field(u32, family)
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__string(dev, (n->dev ? n->dev->name : "NULL"))
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__array(u8, lladdr, MAX_ADDR_LEN)
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__field(u8, lladdr_len)
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__field(u8, flags)
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__field(u8, nud_state)
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__field(u8, type)
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__field(u8, dead)
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__field(int, refcnt)
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__array(__u8, primary_key4, 4)
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__array(__u8, primary_key6, 16)
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__field(unsigned long, confirmed)
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__field(unsigned long, updated)
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__field(unsigned long, used)
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__field(u32, err)
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),
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TP_fast_assign(
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int lladdr_len = (n->dev ? n->dev->addr_len : MAX_ADDR_LEN);
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struct in6_addr *pin6;
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__be32 *p32;
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__entry->family = n->tbl->family;
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__assign_str(dev, (n->dev ? n->dev->name : "NULL"));
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__entry->lladdr_len = lladdr_len;
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memcpy(__entry->lladdr, n->ha, lladdr_len);
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__entry->flags = n->flags;
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__entry->nud_state = n->nud_state;
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__entry->type = n->type;
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__entry->dead = n->dead;
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__entry->refcnt = refcount_read(&n->refcnt);
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pin6 = (struct in6_addr *)__entry->primary_key6;
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p32 = (__be32 *)__entry->primary_key4;
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if (n->tbl->family == AF_INET)
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*p32 = *(__be32 *)n->primary_key;
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else
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*p32 = 0;
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#if IS_ENABLED(CONFIG_IPV6)
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if (n->tbl->family == AF_INET6) {
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pin6 = (struct in6_addr *)__entry->primary_key6;
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*pin6 = *(struct in6_addr *)n->primary_key;
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} else
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#endif
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{
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ipv6_addr_set_v4mapped(*p32, pin6);
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}
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__entry->confirmed = n->confirmed;
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__entry->updated = n->updated;
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__entry->used = n->used;
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__entry->err = err;
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),
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TP_printk("family %d dev %s lladdr %s flags %02x nud_state %s type %02x "
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"dead %d refcnt %d primary_key4 %pI4 primary_key6 %pI6c "
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"confirmed %lu updated %lu used %lu err %d",
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__entry->family, __get_str(dev),
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__print_hex_str(__entry->lladdr, __entry->lladdr_len),
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__entry->flags, neigh_state_str(__entry->nud_state),
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__entry->type, __entry->dead, __entry->refcnt,
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__entry->primary_key4, __entry->primary_key6,
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__entry->confirmed, __entry->updated, __entry->used,
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__entry->err)
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);
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DEFINE_EVENT(neigh__update, neigh_update_done,
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TP_PROTO(struct neighbour *neigh, int err),
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TP_ARGS(neigh, err)
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);
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DEFINE_EVENT(neigh__update, neigh_timer_handler,
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TP_PROTO(struct neighbour *neigh, int err),
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TP_ARGS(neigh, err)
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);
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DEFINE_EVENT(neigh__update, neigh_event_send_done,
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TP_PROTO(struct neighbour *neigh, int err),
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TP_ARGS(neigh, err)
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);
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DEFINE_EVENT(neigh__update, neigh_event_send_dead,
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TP_PROTO(struct neighbour *neigh, int err),
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TP_ARGS(neigh, err)
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);
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DEFINE_EVENT(neigh__update, neigh_cleanup_and_release,
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TP_PROTO(struct neighbour *neigh, int rc),
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TP_ARGS(neigh, rc)
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);
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#endif /* _TRACE_NEIGH_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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@ -43,6 +43,14 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(fdb_delete);
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EXPORT_TRACEPOINT_SYMBOL_GPL(br_fdb_update);
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#endif
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#include <trace/events/neigh.h>
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EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_update);
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EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_update_done);
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EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_timer_handler);
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EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_event_send_done);
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EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_event_send_dead);
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EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_cleanup_and_release);
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EXPORT_TRACEPOINT_SYMBOL_GPL(kfree_skb);
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EXPORT_TRACEPOINT_SYMBOL_GPL(napi_poll);
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