Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

 * Fix include order for bison/flex-generated C files, from Ben Hutchings

 * Build fixes and documentation corrections from David Ahern

 * Group parsing support, from Jiri Olsa

 * UI/gtk refactorings and improvements from Namhyung Kim

 * NULL deref fix for perf script, from Namhyung Kim

 * Assorted cleanups from Robert Richter

 * Let O= makes handle relative paths, from Steven Rostedt

 * perf script python fixes, from Feng Tang.

 * Improve 'perf lock' error message when the needed tracepoints
   are not present, from David Ahern.

 * Initial bash completion support, from Frederic Weisbecker

 * Allow building without libelf, from Namhyung Kim.

 * Support DWARF CFI based unwind to have callchains when %bp
   based unwinding is not possible, from Jiri Olsa.

 * Symbol resolution fixes, while fixing support PPC64 files with an .opt ELF
   section was the end goal, several fixes for code that handles all
   architectures and cleanups are included, from Cody Schafer.

 * Add a description for the JIT interface, from Andi Kleen.

 * Assorted fixes for Documentation and build in 32 bit, from Robert Richter

 * Add support for non-tracepoint events in perf script python, from Feng Tang

 * Cache the libtraceevent event_format associated to each evsel early, so that we
   avoid relookups, i.e. calling pevent_find_event repeatedly when processing
   tracepoint events.

   [ This is to reduce the surface contact with libtraceevents and make clear what
     is that the perf tools needs from that lib: so far parsing the common and per
     event fields. ]

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 9 insertions, 14 deletions

diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 091a2971c7b..24d69dbca4d 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -188,14 +188,16 @@ static inline bool icmpv6_xrlim_allow(struct sock *sk, u8 type,
 	} else {
 		struct rt6_info *rt = (struct rt6_info *)dst;
 		int tmo = net->ipv6.sysctl.icmpv6_time;
+		struct inet_peer *peer;
 
 		/* Give more bandwidth to wider prefixes. */
 		if (rt->rt6i_dst.plen < 128)
 			tmo >>= ((128 - rt->rt6i_dst.plen)>>5);
 
-		if (!rt->rt6i_peer)
-			rt6_bind_peer(rt, 1);
-		res = inet_peer_xrlim_allow(rt->rt6i_peer, tmo);
+		peer = inet_getpeer_v6(net->ipv6.peers, &rt->rt6i_dst.addr, 1);
+		res = inet_peer_xrlim_allow(peer, tmo);
+		if (peer)
+			inet_putpeer(peer);
 	}
 	dst_release(dst);
 	return res;
@@ -596,13 +598,12 @@ out:
 	icmpv6_xmit_unlock(sk);
 }
 
-static void icmpv6_notify(struct sk_buff *skb, u8 type, u8 code, __be32 info)
+void icmpv6_notify(struct sk_buff *skb, u8 type, u8 code, __be32 info)
 {
 	const struct inet6_protocol *ipprot;
 	int inner_offset;
-	int hash;
-	u8 nexthdr;
 	__be16 frag_off;
+	u8 nexthdr;
 
 	if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
 		return;
@@ -629,10 +630,8 @@ static void icmpv6_notify(struct sk_buff *skb, u8 type, u8 code, __be32 info)
 	   --ANK (980726)
 	 */
 
-	hash = nexthdr & (MAX_INET_PROTOS - 1);
-
 	rcu_read_lock();
-	ipprot = rcu_dereference(inet6_protos[hash]);
+	ipprot = rcu_dereference(inet6_protos[nexthdr]);
 	if (ipprot && ipprot->err_handler)
 		ipprot->err_handler(skb, NULL, type, code, inner_offset, info);
 	rcu_read_unlock();
@@ -649,7 +648,6 @@ static int icmpv6_rcv(struct sk_buff *skb)
 	struct net_device *dev = skb->dev;
 	struct inet6_dev *idev = __in6_dev_get(dev);
 	const struct in6_addr *saddr, *daddr;
-	const struct ipv6hdr *orig_hdr;
 	struct icmp6hdr *hdr;
 	u8 type;
 
@@ -661,7 +659,7 @@ static int icmpv6_rcv(struct sk_buff *skb)
 				 XFRM_STATE_ICMP))
 			goto drop_no_count;
 
-		if (!pskb_may_pull(skb, sizeof(*hdr) + sizeof(*orig_hdr)))
+		if (!pskb_may_pull(skb, sizeof(*hdr) + sizeof(struct ipv6hdr)))
 			goto drop_no_count;
 
 		nh = skb_network_offset(skb);
@@ -722,9 +720,6 @@ static int icmpv6_rcv(struct sk_buff *skb)
 		if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
 			goto discard_it;
 		hdr = icmp6_hdr(skb);
-		orig_hdr = (struct ipv6hdr *) (hdr + 1);
-		rt6_pmtu_discovery(&orig_hdr->daddr, &orig_hdr->saddr, dev,
-				   ntohl(hdr->icmp6_mtu));
 
 		/*
 		 *	Drop through to notify