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OpenCloudOS-Kernel
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ipv6: use flag instead of u16 for hop in inet6_skb_parm 

Hop was always either 0 or sizeof(struct ipv6hdr).

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Westphal 2015-07-08 23:32:12 +02:00 committed by David S. Miller
parent 7c3d0d67d5
commit 8b58a39846
4 changed files with 8 additions and 8 deletions
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2
include/linux/ipv6.h
View File

@ -94,7 +94,6 @@ static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb)
struct inet6_skb_parm {
int iif;
__be16 ra;
__u16 hop;
__u16 dst0;
__u16 srcrt;
__u16 dst1;
@ -111,6 +110,7 @@ struct inet6_skb_parm {
#define IP6SKB_REROUTED 4
#define IP6SKB_ROUTERALERT 8
#define IP6SKB_FRAGMENTED 16
#define IP6SKB_HOPBYHOP 32
};
#define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb))

4
net/ipv6/af_inet6.c
View File

@ -679,8 +679,8 @@ bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb,
const struct ipv6_pinfo *np = inet6_sk(sk);
if (np->rxopt.all) {
if ((opt->hop && (np->rxopt.bits.hopopts ||
np->rxopt.bits.ohopopts)) ||
if (((opt->flags & IP6SKB_HOPBYHOP) &&
(np->rxopt.bits.hopopts || np->rxopt.bits.ohopopts)) ||
(ip6_flowinfo((struct ipv6hdr *) skb_network_header(skb)) &&
np->rxopt.bits.rxflow) ||
(opt->srcrt && (np->rxopt.bits.srcrt ||

8
net/ipv6/datagram.c
View File

@ -558,8 +558,8 @@ void ip6_datagram_recv_specific_ctl(struct sock *sk, struct msghdr *msg,
}
/* HbH is allowed only once */
if (np->rxopt.bits.hopopts && opt->hop) {
u8 *ptr = nh + opt->hop;
if (np->rxopt.bits.hopopts && (opt->flags & IP6SKB_HOPBYHOP)) {
u8 *ptr = nh + sizeof(struct ipv6hdr);
put_cmsg(msg, SOL_IPV6, IPV6_HOPOPTS, (ptr[1]+1)<<3, ptr);
}
@ -620,8 +620,8 @@ void ip6_datagram_recv_specific_ctl(struct sock *sk, struct msghdr *msg,
int hlim = ipv6_hdr(skb)->hop_limit;
put_cmsg(msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim);
}
if (np->rxopt.bits.ohopopts && opt->hop) {
u8 *ptr = nh + opt->hop;
if (np->rxopt.bits.ohopopts && (opt->flags & IP6SKB_HOPBYHOP)) {
u8 *ptr = nh + sizeof(struct ipv6hdr);
put_cmsg(msg, SOL_IPV6, IPV6_2292HOPOPTS, (ptr[1]+1)<<3, ptr);
}
if (np->rxopt.bits.odstopts && opt->dst0) {

2
net/ipv6/exthdrs.c
View File

@ -632,7 +632,7 @@ int ipv6_parse_hopopts(struct sk_buff *skb)
return -1;
}
opt->hop = sizeof(struct ipv6hdr);
opt->flags |= IP6SKB_HOPBYHOP;
if (ip6_parse_tlv(tlvprochopopt_lst, skb)) {
skb->transport_header += (skb_transport_header(skb)[1] + 1) << 3;
opt = IP6CB(skb);