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Merge branch 'udp-a-few-fixes'

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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>
This commit is contained in:
David S. Miller 2019-02-22 16:05:12 -08:00
commit 40e8f0b42f
3 changed files with 12 additions and 8 deletions
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6
net/ipv4/udp.c
View File

@ -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;
}

2
net/ipv6/fou6.c
View File

@ -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;

12
net/ipv6/udp.c
View File

@ -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;
}