Commit d4bea421 authored by David Ahern's avatar David Ahern Committed by Daniel Borkmann
Browse files

net/ipv6: Update fib6 tracepoint to take fib6_info 



Similar to IPv4, IPv6 should use the FIB lookup result in the
tracepoint.

Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parent 138118ec

include/trace/events/fib6.h

+7 −7
Original line number Diff line number Diff line
@@ -12,10 +12,10 @@ 


TRACE_EVENT(fib6_table_lookup,



	TP_PROTO(const struct net *net, const struct rt6_info *rt,

	TP_PROTO(const struct net *net, const struct fib6_info *f6i,

		 struct fib6_table *table, const struct flowi6 *flp),



	TP_ARGS(net, rt, table, flp),

	TP_ARGS(net, f6i, table, flp),



	TP_STRUCT__entry(

		__field(	u32,	tb_id		)
@@ -48,20 +48,20 @@ TRACE_EVENT(fib6_table_lookup, 
		in6 = (struct in6_addr *)__entry->dst;

		*in6 = flp->daddr;



		if (rt->rt6i_idev) {

			__assign_str(name, rt->rt6i_idev->dev->name);

		if (f6i->fib6_nh.nh_dev) {

			__assign_str(name, f6i->fib6_nh.nh_dev);

		} else {

			__assign_str(name, "");

		}

		if (rt == net->ipv6.ip6_null_entry) {

		if (f6i == net->ipv6.fib6_null_entry) {

			struct in6_addr in6_zero = {};



			in6 = (struct in6_addr *)__entry->gw;

			*in6 = in6_zero;



		} else if (rt) {

		} else if (f6i) {

			in6 = (struct in6_addr *)__entry->gw;

			*in6 = rt->rt6i_gateway;

			*in6 = f6i->fib6_nh.nh_gw;

		}

	),

net/ipv6/route.c

+6 −8
Original line number Diff line number Diff line
@@ -1078,6 +1078,8 @@ static struct rt6_info *ip6_pol_route_lookup(struct net *net, 
			goto restart;

	}



	trace_fib6_table_lookup(net, f6i, table, fl6);



	/* Search through exception table */

	rt = rt6_find_cached_rt(f6i, &fl6->daddr, &fl6->saddr);

	if (rt) {
@@ -1096,8 +1098,6 @@ static struct rt6_info *ip6_pol_route_lookup(struct net *net, 


	rcu_read_unlock();



	trace_fib6_table_lookup(net, rt, table, fl6);



	return rt;

}
@@ -1827,6 +1827,8 @@ struct fib6_info *fib6_table_lookup(struct net *net, struct fib6_table *table, 
		}

	}



	trace_fib6_table_lookup(net, f6i, table, fl6);



	return f6i;

}
@@ -1853,7 +1855,6 @@ struct rt6_info *ip6_pol_route(struct net *net, struct fib6_table *table, 
		rt = net->ipv6.ip6_null_entry;

		rcu_read_unlock();

		dst_hold(&rt->dst);

		trace_fib6_table_lookup(net, rt, table, fl6);

		return rt;

	}
@@ -1864,7 +1865,6 @@ struct rt6_info *ip6_pol_route(struct net *net, struct fib6_table *table, 
			dst_use_noref(&rt->dst, jiffies);



		rcu_read_unlock();

		trace_fib6_table_lookup(net, rt, table, fl6);

		return rt;

	} else if (unlikely((fl6->flowi6_flags & FLOWI_FLAG_KNOWN_NH) &&

			    !(f6i->fib6_flags & RTF_GATEWAY))) {
@@ -1890,9 +1890,7 @@ struct rt6_info *ip6_pol_route(struct net *net, struct fib6_table *table, 
			dst_hold(&uncached_rt->dst);

		}



		trace_fib6_table_lookup(net, uncached_rt, table, fl6);

		return uncached_rt;



	} else {

		/* Get a percpu copy */
@@ -1906,7 +1904,7 @@ struct rt6_info *ip6_pol_route(struct net *net, struct fib6_table *table, 


		local_bh_enable();

		rcu_read_unlock();

		trace_fib6_table_lookup(net, pcpu_rt, table, fl6);



		return pcpu_rt;

	}

}
@@ -2491,7 +2489,7 @@ static struct rt6_info *__ip6_route_redirect(struct net *net, 


	rcu_read_unlock();



	trace_fib6_table_lookup(net, ret, table, fl6);

	trace_fib6_table_lookup(net, rt, table, fl6);

	return ret;

};