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ipv6: move IPV6_TCLASS_SHIFT into ipv6.h and define a helper

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Two places defined IPV6_TCLASS_SHIFT, so we should move it into ipv6.h,
and use this macro as possible. And define ip6_tclass helper to return
tclass

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Li RongQing 2014-01-15 17:03:30 +08:00 committed by David S. Miller
parent e96a41ebde
commit d76ed22b22
5 changed files with 8 additions and 6 deletions
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5
include/net/ipv6.h
View File

@ -239,6 +239,7 @@ struct ip6_flowlabel {
#define IPV6_FLOWINFO_MASK cpu_to_be32(0x0FFFFFFF)
#define IPV6_FLOWLABEL_MASK cpu_to_be32(0x000FFFFF)
#define IPV6_TCLASS_MASK (IPV6_FLOWINFO_MASK & ~IPV6_FLOWLABEL_MASK)
#define IPV6_TCLASS_SHIFT 20
struct ipv6_fl_socklist {
struct ipv6_fl_socklist __rcu *next;
@ -681,6 +682,10 @@ static inline __be32 ip6_flowlabel(const struct ipv6hdr *hdr)
return *(__be32 *)hdr & IPV6_FLOWLABEL_MASK;
}
static inline u8 ip6_tclass(__be32 flowinfo)
{
return ntohl(flowinfo & IPV6_TCLASS_MASK) >> IPV6_TCLASS_SHIFT;
}
/*
* Prototypes exported by ipv6
*/

2
net/ipv6/fib6_rules.c
View File

@ -169,7 +169,7 @@ static int fib6_rule_match(struct fib_rule *rule, struct flowi *fl, int flags)
return 0;
}
if (r->tclass && r->tclass != ((ntohl(fl6->flowlabel) >> 20) & 0xff))
if (r->tclass && r->tclass != ip6_tclass(fl6->flowlabel))
return 0;
return 1;

2
net/ipv6/ip6_gre.c
View File

@ -61,8 +61,6 @@ static bool log_ecn_error = true;
module_param(log_ecn_error, bool, 0644);
MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN");
#define IPV6_TCLASS_SHIFT 20
#define HASH_SIZE_SHIFT 5
#define HASH_SIZE (1 << HASH_SIZE_SHIFT)

2
net/ipv6/ip6_tunnel.c
View File

@ -69,8 +69,6 @@ MODULE_ALIAS_NETDEV("ip6tnl0");
#define IP6_TNL_TRACE(x...) do {;} while(0)
#endif
#define IPV6_TCLASS_SHIFT 20
#define HASH_SIZE_SHIFT 5
#define HASH_SIZE (1 << HASH_SIZE_SHIFT)

3
net/ipv6/ipv6_sockglue.c
View File

@ -1019,7 +1019,8 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
put_cmsg(&msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim);
}
if (np->rxopt.bits.rxtclass) {
int tclass = ntohl(np->rcv_flowinfo & IPV6_TCLASS_MASK) >> 20;
int tclass = (int)ip6_tclass(np->rcv_flowinfo);
put_cmsg(&msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass);
}
if (np->rxopt.bits.rxoinfo) {