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Date: Mon, 21 May 2018 14:24:42 -0700
From: dsahern@...nel.org
To: netdev@...r.kernel.org
Cc: David Ahern <dsahern@...il.com>
Subject: [PATCH net-next 2/3] net/ipv6: Udate fib6_table_lookup tracepoint
From: David Ahern <dsahern@...il.com>
Commit bb0ad1987e96 ("ipv6: fib6_rules: support for match on sport, dport
and ip proto") added support for protocol and ports to FIB rules.
Update the FIB lookup tracepoint to dump the parameters.
Signed-off-by: David Ahern <dsahern@...il.com>
---
include/net/ip6_fib.h | 2 ++
include/trace/events/fib6.h | 29 ++++++++++++++++++++++-------
net/ipv6/route.c | 2 +-
3 files changed, 25 insertions(+), 8 deletions(-)
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index cc70f6da8462..63fd9888f006 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -286,6 +286,8 @@ static inline void fib6_info_release(struct fib6_info *f6i)
fib6_info_destroy(f6i);
}
+int ip6_rt_type_to_error(u8 fib6_type);
+
enum fib6_walk_state {
#ifdef CONFIG_IPV6_SUBTREES
FWS_S,
diff --git a/include/trace/events/fib6.h b/include/trace/events/fib6.h
index 1b8d951e3c12..b088b54d699c 100644
--- a/include/trace/events/fib6.h
+++ b/include/trace/events/fib6.h
@@ -19,7 +19,7 @@ TRACE_EVENT(fib6_table_lookup,
TP_STRUCT__entry(
__field( u32, tb_id )
-
+ __field( int, err )
__field( int, oif )
__field( int, iif )
__field( __u8, tos )
@@ -27,7 +27,10 @@ TRACE_EVENT(fib6_table_lookup,
__field( __u8, flags )
__array( __u8, src, 16 )
__array( __u8, dst, 16 )
-
+ __field( u16, sport )
+ __field( u16, dport )
+ __field( u8, proto )
+ __field( u8, rt_type )
__dynamic_array( char, name, IFNAMSIZ )
__array( __u8, gw, 16 )
),
@@ -36,6 +39,7 @@ TRACE_EVENT(fib6_table_lookup,
struct in6_addr *in6;
__entry->tb_id = table->tb6_id;
+ __entry->err = ip6_rt_type_to_error(f6i->fib6_type);
__entry->oif = flp->flowi6_oif;
__entry->iif = flp->flowi6_iif;
__entry->tos = ip6_tclass(flp->flowlabel);
@@ -48,10 +52,20 @@ TRACE_EVENT(fib6_table_lookup,
in6 = (struct in6_addr *)__entry->dst;
*in6 = flp->daddr;
+ __entry->proto = flp->flowi6_proto;
+ if (__entry->proto == IPPROTO_TCP ||
+ __entry->proto == IPPROTO_UDP) {
+ __entry->sport = ntohs(flp->fl6_sport);
+ __entry->dport = ntohs(flp->fl6_dport);
+ } else {
+ __entry->sport = 0;
+ __entry->dport = 0;
+ }
+
if (f6i->fib6_nh.nh_dev) {
__assign_str(name, f6i->fib6_nh.nh_dev);
} else {
- __assign_str(name, "");
+ __assign_str(name, "-");
}
if (f6i == net->ipv6.fib6_null_entry) {
struct in6_addr in6_zero = {};
@@ -65,10 +79,11 @@ TRACE_EVENT(fib6_table_lookup,
}
),
- TP_printk("table %3u oif %d iif %d src %pI6c dst %pI6c tos %d scope %d flags %x ==> dev %s gw %pI6c",
- __entry->tb_id, __entry->oif, __entry->iif,
- __entry->src, __entry->dst, __entry->tos, __entry->scope,
- __entry->flags, __get_str(name), __entry->gw)
+ TP_printk("table %3u oif %d iif %d proto %u %pI6c/%u -> %pI6c/%u tos %d scope %d flags %x ==> dev %s gw %pI6c err %d",
+ __entry->tb_id, __entry->oif, __entry->iif, __entry->proto,
+ __entry->src, __entry->sport, __entry->dst, __entry->dport,
+ __entry->tos, __entry->scope, __entry->flags,
+ __get_str(name), __entry->gw, __entry->err)
);
#endif /* _TRACE_FIB6_H */
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index cc24ed3bc334..ae27e57c5997 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -897,7 +897,7 @@ static const int fib6_prop[RTN_MAX + 1] = {
[RTN_XRESOLVE] = -EINVAL,
};
-static int ip6_rt_type_to_error(u8 fib6_type)
+int ip6_rt_type_to_error(u8 fib6_type)
{
return fib6_prop[fib6_type];
}
--
2.11.0
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