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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 <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,204 @@ | ||
| #undef TRACE_SYSTEM | ||
| #define TRACE_SYSTEM neigh | ||
|
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||
| #if !defined(_TRACE_NEIGH_H) || defined(TRACE_HEADER_MULTI_READ) | ||
| #define _TRACE_NEIGH_H | ||
|
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| #include <linux/skbuff.h> | ||
| #include <linux/netdevice.h> | ||
| #include <linux/tracepoint.h> | ||
| #include <net/neighbour.h> | ||
|
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| #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" }) | ||
|
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| TRACE_EVENT(neigh_update, | ||
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| TP_PROTO(struct neighbour *n, const u8 *lladdr, u8 new, | ||
| u32 flags, u32 nlmsg_pid), | ||
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| TP_ARGS(n, lladdr, new, flags, nlmsg_pid), | ||
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| 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) | ||
| ), | ||
|
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||
| TP_fast_assign( | ||
| int lladdr_len = (n->dev ? n->dev->addr_len : MAX_ADDR_LEN); | ||
| struct in6_addr *pin6; | ||
| __be32 *p32; | ||
|
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||
| __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; | ||
|
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| if (n->tbl->family == AF_INET) | ||
| *p32 = *(__be32 *)n->primary_key; | ||
| else | ||
| *p32 = 0; | ||
|
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||
| #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; | ||
| ), | ||
|
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||
| 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) | ||
| ); | ||
|
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||
| 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) | ||
| ), | ||
|
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||
| TP_fast_assign( | ||
| int lladdr_len = (n->dev ? n->dev->addr_len : MAX_ADDR_LEN); | ||
| struct in6_addr *pin6; | ||
| __be32 *p32; | ||
|
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||
| __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; | ||
|
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| if (n->tbl->family == AF_INET) | ||
| *p32 = *(__be32 *)n->primary_key; | ||
| else | ||
| *p32 = 0; | ||
|
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| #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); | ||
| } | ||
|
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| __entry->confirmed = n->confirmed; | ||
| __entry->updated = n->updated; | ||
| __entry->used = n->used; | ||
| __entry->err = err; | ||
| ), | ||
|
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||
| 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) | ||
| ); | ||
|
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||
| DEFINE_EVENT(neigh__update, neigh_update_done, | ||
| TP_PROTO(struct neighbour *neigh, int err), | ||
| TP_ARGS(neigh, err) | ||
| ); | ||
|
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| DEFINE_EVENT(neigh__update, neigh_timer_handler, | ||
| TP_PROTO(struct neighbour *neigh, int err), | ||
| TP_ARGS(neigh, err) | ||
| ); | ||
|
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| DEFINE_EVENT(neigh__update, neigh_event_send_done, | ||
| TP_PROTO(struct neighbour *neigh, int err), | ||
| TP_ARGS(neigh, err) | ||
| ); | ||
|
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| DEFINE_EVENT(neigh__update, neigh_event_send_dead, | ||
| TP_PROTO(struct neighbour *neigh, int err), | ||
| TP_ARGS(neigh, err) | ||
| ); | ||
|
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| DEFINE_EVENT(neigh__update, neigh_cleanup_and_release, | ||
| TP_PROTO(struct neighbour *neigh, int rc), | ||
| TP_ARGS(neigh, rc) | ||
| ); | ||
|
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| #endif /* _TRACE_NEIGH_H */ | ||
|
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| /* This part must be outside protection */ | ||
| #include <trace/define_trace.h> |
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