From 9c03b282badb7600058321c80e367f93b4013bd0 Mon Sep 17 00:00:00 2001 From: Roopa Prabhu Date: Thu, 14 Feb 2019 09:15:10 -0800 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- include/trace/events/neigh.h | 204 +++++++++++++++++++++++++++++++++++ net/core/net-traces.c | 8 ++ 2 files changed, 212 insertions(+) create mode 100644 include/trace/events/neigh.h diff --git a/include/trace/events/neigh.h b/include/trace/events/neigh.h new file mode 100644 index 000000000000..ed10353eee73 --- /dev/null +++ b/include/trace/events/neigh.h @@ -0,0 +1,204 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM neigh + +#if !defined(_TRACE_NEIGH_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_NEIGH_H + +#include +#include +#include +#include + +#define neigh_state_str(state) \ + __print_symbolic(state, \ + { NUD_INCOMPLETE, "incomplete" }, \ + { NUD_REACHABLE, "reachable" }, \ + { NUD_STALE, "stale" }, \ + { NUD_DELAY, "delay" }, \ + { NUD_PROBE, "probe" }, \ + { NUD_FAILED, "failed" }) + +TRACE_EVENT(neigh_update, + + TP_PROTO(struct neighbour *n, const u8 *lladdr, u8 new, + u32 flags, u32 nlmsg_pid), + + TP_ARGS(n, lladdr, new, flags, nlmsg_pid), + + TP_STRUCT__entry( + __field(u32, family) + __string(dev, (n->dev ? n->dev->name : "NULL")) + __array(u8, lladdr, MAX_ADDR_LEN) + __field(u8, lladdr_len) + __field(u8, flags) + __field(u8, nud_state) + __field(u8, type) + __field(u8, dead) + __field(int, refcnt) + __array(__u8, primary_key4, 4) + __array(__u8, primary_key6, 16) + __field(unsigned long, confirmed) + __field(unsigned long, updated) + __field(unsigned long, used) + __array(u8, new_lladdr, MAX_ADDR_LEN) + __field(u8, new_state) + __field(u32, update_flags) + __field(u32, pid) + ), + + TP_fast_assign( + int lladdr_len = (n->dev ? n->dev->addr_len : MAX_ADDR_LEN); + struct in6_addr *pin6; + __be32 *p32; + + __entry->family = n->tbl->family; + __assign_str(dev, (n->dev ? n->dev->name : "NULL")); + __entry->lladdr_len = lladdr_len; + memcpy(__entry->lladdr, n->ha, lladdr_len); + __entry->flags = n->flags; + __entry->nud_state = n->nud_state; + __entry->type = n->type; + __entry->dead = n->dead; + __entry->refcnt = refcount_read(&n->refcnt); + pin6 = (struct in6_addr *)__entry->primary_key6; + p32 = (__be32 *)__entry->primary_key4; + + if (n->tbl->family == AF_INET) + *p32 = *(__be32 *)n->primary_key; + else + *p32 = 0; + +#if IS_ENABLED(CONFIG_IPV6) + if (n->tbl->family == AF_INET6) { + pin6 = (struct in6_addr *)__entry->primary_key6; + *pin6 = *(struct in6_addr *)n->primary_key; + } else +#endif + { + ipv6_addr_set_v4mapped(*p32, pin6); + } + __entry->confirmed = n->confirmed; + __entry->updated = n->updated; + __entry->used = n->used; + if (lladdr) + memcpy(__entry->new_lladdr, lladdr, lladdr_len); + __entry->new_state = new; + __entry->update_flags = flags; + __entry->pid = nlmsg_pid; + ), + + TP_printk("family %d dev %s lladdr %s flags %02x nud_state %s type %02x " + "dead %d refcnt %d primary_key4 %pI4 primary_key6 %pI6c " + "confirmed %lu updated %lu used %lu new_lladdr %s " + "new_state %02x update_flags %02x pid %d", + __entry->family, __get_str(dev), + __print_hex_str(__entry->lladdr, __entry->lladdr_len), + __entry->flags, neigh_state_str(__entry->nud_state), + __entry->type, __entry->dead, __entry->refcnt, + __entry->primary_key4, __entry->primary_key6, + __entry->confirmed, __entry->updated, __entry->used, + __print_hex_str(__entry->new_lladdr, __entry->lladdr_len), + __entry->new_state, + __entry->update_flags, __entry->pid) +); + +DECLARE_EVENT_CLASS(neigh__update, + TP_PROTO(struct neighbour *n, int err), + TP_ARGS(n, err), + TP_STRUCT__entry( + __field(u32, family) + __string(dev, (n->dev ? n->dev->name : "NULL")) + __array(u8, lladdr, MAX_ADDR_LEN) + __field(u8, lladdr_len) + __field(u8, flags) + __field(u8, nud_state) + __field(u8, type) + __field(u8, dead) + __field(int, refcnt) + __array(__u8, primary_key4, 4) + __array(__u8, primary_key6, 16) + __field(unsigned long, confirmed) + __field(unsigned long, updated) + __field(unsigned long, used) + __field(u32, err) + ), + + TP_fast_assign( + int lladdr_len = (n->dev ? n->dev->addr_len : MAX_ADDR_LEN); + struct in6_addr *pin6; + __be32 *p32; + + __entry->family = n->tbl->family; + __assign_str(dev, (n->dev ? n->dev->name : "NULL")); + __entry->lladdr_len = lladdr_len; + memcpy(__entry->lladdr, n->ha, lladdr_len); + __entry->flags = n->flags; + __entry->nud_state = n->nud_state; + __entry->type = n->type; + __entry->dead = n->dead; + __entry->refcnt = refcount_read(&n->refcnt); + pin6 = (struct in6_addr *)__entry->primary_key6; + p32 = (__be32 *)__entry->primary_key4; + + if (n->tbl->family == AF_INET) + *p32 = *(__be32 *)n->primary_key; + else + *p32 = 0; + +#if IS_ENABLED(CONFIG_IPV6) + if (n->tbl->family == AF_INET6) { + pin6 = (struct in6_addr *)__entry->primary_key6; + *pin6 = *(struct in6_addr *)n->primary_key; + } else +#endif + { + ipv6_addr_set_v4mapped(*p32, pin6); + } + + __entry->confirmed = n->confirmed; + __entry->updated = n->updated; + __entry->used = n->used; + __entry->err = err; + ), + + TP_printk("family %d dev %s lladdr %s flags %02x nud_state %s type %02x " + "dead %d refcnt %d primary_key4 %pI4 primary_key6 %pI6c " + "confirmed %lu updated %lu used %lu err %d", + __entry->family, __get_str(dev), + __print_hex_str(__entry->lladdr, __entry->lladdr_len), + __entry->flags, neigh_state_str(__entry->nud_state), + __entry->type, __entry->dead, __entry->refcnt, + __entry->primary_key4, __entry->primary_key6, + __entry->confirmed, __entry->updated, __entry->used, + __entry->err) +); + +DEFINE_EVENT(neigh__update, neigh_update_done, + TP_PROTO(struct neighbour *neigh, int err), + TP_ARGS(neigh, err) +); + +DEFINE_EVENT(neigh__update, neigh_timer_handler, + TP_PROTO(struct neighbour *neigh, int err), + TP_ARGS(neigh, err) +); + +DEFINE_EVENT(neigh__update, neigh_event_send_done, + TP_PROTO(struct neighbour *neigh, int err), + TP_ARGS(neigh, err) +); + +DEFINE_EVENT(neigh__update, neigh_event_send_dead, + TP_PROTO(struct neighbour *neigh, int err), + TP_ARGS(neigh, err) +); + +DEFINE_EVENT(neigh__update, neigh_cleanup_and_release, + TP_PROTO(struct neighbour *neigh, int rc), + TP_ARGS(neigh, rc) +); + +#endif /* _TRACE_NEIGH_H */ + +/* This part must be outside protection */ +#include diff --git a/net/core/net-traces.c b/net/core/net-traces.c index 419af6dfe29f..470b179d599e 100644 --- a/net/core/net-traces.c +++ b/net/core/net-traces.c @@ -43,6 +43,14 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(fdb_delete); EXPORT_TRACEPOINT_SYMBOL_GPL(br_fdb_update); #endif +#include +EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_update); +EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_update_done); +EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_timer_handler); +EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_event_send_done); +EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_event_send_dead); +EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_cleanup_and_release); + EXPORT_TRACEPOINT_SYMBOL_GPL(kfree_skb); EXPORT_TRACEPOINT_SYMBOL_GPL(napi_poll);