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net/ipv6: Udate fib6_table_lookup tracepoint 

Commit bb0ad1987e ("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@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2018-05-23 17:08:48 -07:00 committed by David S. Miller
parent 9f323973c9
commit 30d444d300
3 changed files with 29 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
include/trace/events/fib6.h
View File

@ -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 */

4
net/core/net-traces.c
View File

@ -35,10 +35,6 @@
#include <trace/events/tcp.h>
#include <trace/events/fib.h>
#include <trace/events/qdisc.h>
#if IS_ENABLED(CONFIG_IPV6)
#include <trace/events/fib6.h>
EXPORT_TRACEPOINT_SYMBOL_GPL(fib6_table_lookup);
#endif
#if IS_ENABLED(CONFIG_BRIDGE)
#include <trace/events/bridge.h>
EXPORT_TRACEPOINT_SYMBOL_GPL(br_fdb_add);

9
net/ipv6/route.c
View File

@ -64,14 +64,19 @@
#include <net/ip_tunnels.h>
#include <net/l3mdev.h>
#include <net/ip.h>
#include <trace/events/fib6.h>
#include <linux/uaccess.h>
#ifdef CONFIG_SYSCTL
#include <linux/sysctl.h>
#endif
static int ip6_rt_type_to_error(u8 fib6_type);
#define CREATE_TRACE_POINTS
#include <trace/events/fib6.h>
EXPORT_TRACEPOINT_SYMBOL_GPL(fib6_table_lookup);
#undef CREATE_TRACE_POINTS
enum rt6_nud_state {
RT6_NUD_FAIL_HARD = -3,
RT6_NUD_FAIL_PROBE = -2,