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authorDavid S. Miller <davem@davemloft.net>2019-02-22 16:05:12 -0800
committerDavid S. Miller <davem@davemloft.net>2019-02-22 16:05:12 -0800
commit40e8f0b42fec9cc21f60de2982fd90620359c5d8 (patch)
treea3c10fb8d15b866a0812ed3d3460f09d52968978
parent6ff7b060535e87c2ae14dd8548512abfdda528fb (diff)
parent92b95364235b6441a36861ff0ca4541a13351d60 (diff)
downloadlinux-40e8f0b42fec9cc21f60de2982fd90620359c5d8.tar.bz2
Merge branch 'udp-a-few-fixes'
Paolo Abeni says: ==================== udp: a few fixes This series includes some UDP-related fixlet. All this stuff has been pointed out by the sparse tool. The first two patches are just annotation related, while the last 2 cover some very unlikely races. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv4/udp.c6
-rw-r--r--net/ipv6/fou6.c2
-rw-r--r--net/ipv6/udp.c12
3 files changed, 12 insertions, 8 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 5c3cd5d84a6f..372fdc5381a9 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -562,10 +562,12 @@ static int __udp4_lib_err_encap_no_sk(struct sk_buff *skb, u32 info)
for (i = 0; i < MAX_IPTUN_ENCAP_OPS; i++) {
int (*handler)(struct sk_buff *skb, u32 info);
+ const struct ip_tunnel_encap_ops *encap;
- if (!iptun_encaps[i])
+ encap = rcu_dereference(iptun_encaps[i]);
+ if (!encap)
continue;
- handler = rcu_dereference(iptun_encaps[i]->err_handler);
+ handler = encap->err_handler;
if (handler && !handler(skb, info))
return 0;
}
diff --git a/net/ipv6/fou6.c b/net/ipv6/fou6.c
index b858bd5280bf..867474abe269 100644
--- a/net/ipv6/fou6.c
+++ b/net/ipv6/fou6.c
@@ -72,7 +72,7 @@ static int gue6_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
static int gue6_err_proto_handler(int proto, struct sk_buff *skb,
struct inet6_skb_parm *opt,
- u8 type, u8 code, int offset, u32 info)
+ u8 type, u8 code, int offset, __be32 info)
{
const struct inet6_protocol *ipprot;
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 2596ffdeebea..b444483cdb2b 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -288,8 +288,8 @@ int udpv6_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
int peeked, peeking, off;
int err;
int is_udplite = IS_UDPLITE(sk);
+ struct udp_mib __percpu *mib;
bool checksum_valid = false;
- struct udp_mib *mib;
int is_udp4;
if (flags & MSG_ERRQUEUE)
@@ -420,17 +420,19 @@ EXPORT_SYMBOL(udpv6_encap_enable);
*/
static int __udp6_lib_err_encap_no_sk(struct sk_buff *skb,
struct inet6_skb_parm *opt,
- u8 type, u8 code, int offset, u32 info)
+ u8 type, u8 code, int offset, __be32 info)
{
int i;
for (i = 0; i < MAX_IPTUN_ENCAP_OPS; i++) {
int (*handler)(struct sk_buff *skb, struct inet6_skb_parm *opt,
- u8 type, u8 code, int offset, u32 info);
+ u8 type, u8 code, int offset, __be32 info);
+ const struct ip6_tnl_encap_ops *encap;
- if (!ip6tun_encaps[i])
+ encap = rcu_dereference(ip6tun_encaps[i]);
+ if (!encap)
continue;
- handler = rcu_dereference(ip6tun_encaps[i]->err_handler);
+ handler = encap->err_handler;
if (handler && !handler(skb, opt, type, code, offset, info))
return 0;
}