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xfrm: simplify xfrm_address_t use

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In many places, the a6 field is typecasted to struct in6_addr. As the
fields are in union anyway, just add in6_addr type to the union and
get rid of the typecasting.

Modifying the uapi header is okay, the union has still the same size.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Benc 2015-03-29 16:59:24 +02:00 committed by David S. Miller
parent 8f55db4860
commit 15e318bdc6
6 changed files with 13 additions and 13 deletions
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6
include/net/xfrm.h
View File

@ -1025,7 +1025,7 @@ xfrm_addr_any(const xfrm_address_t *addr, unsigned short family)
case AF_INET:
return addr->a4 == 0;
case AF_INET6:
return ipv6_addr_any((struct in6_addr *)&addr->a6);
return ipv6_addr_any(&addr->in6);
}
return 0;
}
@ -1238,8 +1238,8 @@ void xfrm_flowi_addr_get(const struct flowi *fl,
memcpy(&daddr->a4, &fl->u.ip4.daddr, sizeof(daddr->a4));
break;
case AF_INET6:
*(struct in6_addr *)saddr->a6 = fl->u.ip6.saddr;
*(struct in6_addr *)daddr->a6 = fl->u.ip6.daddr;
saddr->in6 = fl->u.ip6.saddr;
daddr->in6 = fl->u.ip6.daddr;
break;
}
}

2
include/uapi/linux/xfrm.h
View File

@ -1,6 +1,7 @@
#ifndef _LINUX_XFRM_H
#define _LINUX_XFRM_H
#include <linux/in6.h>
#include <linux/types.h>
/* All of the structures in this file may not change size as they are
@ -13,6 +14,7 @@
typedef union {
__be32 a4;
__be32 a6[4];
struct in6_addr in6;
} xfrm_address_t;
/* Ident of a specific xfrm_state. It is used on input to lookup

4
net/ipv6/xfrm6_mode_beet.c
View File

@ -95,8 +95,8 @@ static int xfrm6_beet_input(struct xfrm_state *x, struct sk_buff *skb)
ip6h = ipv6_hdr(skb);
ip6h->payload_len = htons(skb->len - size);
ip6h->daddr = *(struct in6_addr *)&x->sel.daddr.a6;
ip6h->saddr = *(struct in6_addr *)&x->sel.saddr.a6;
ip6h->daddr = x->sel.daddr.in6;
ip6h->saddr = x->sel.saddr.in6;
err = 0;
out:
return err;

4
net/ipv6/xfrm6_policy.c
View File

@ -61,9 +61,7 @@ static int xfrm6_get_saddr(struct net *net,
return -EHOSTUNREACH;
dev = ip6_dst_idev(dst)->dev;
ipv6_dev_get_saddr(dev_net(dev), dev,
(struct in6_addr *)&daddr->a6, 0,
(struct in6_addr *)&saddr->a6);
ipv6_dev_get_saddr(dev_net(dev), dev, &daddr->in6, 0, &saddr->in6);
dst_release(dst);
return 0;
}

2
net/key/af_key.c
View File

@ -709,7 +709,7 @@ static unsigned int pfkey_sockaddr_fill(const xfrm_address_t *xaddr, __be16 port
sin6->sin6_family = AF_INET6;
sin6->sin6_port = port;
sin6->sin6_flowinfo = 0;
sin6->sin6_addr = *(struct in6_addr *)xaddr->a6;
sin6->sin6_addr = xaddr->in6;
sin6->sin6_scope_id = 0;
return 128;
}

8
net/xfrm/xfrm_state.c
View File

@ -1043,12 +1043,12 @@ static struct xfrm_state *__find_acq_core(struct net *net,
break;
case AF_INET6:
*(struct in6_addr *)x->sel.daddr.a6 = *(struct in6_addr *)daddr;
*(struct in6_addr *)x->sel.saddr.a6 = *(struct in6_addr *)saddr;
x->sel.daddr.in6 = daddr->in6;
x->sel.saddr.in6 = saddr->in6;
x->sel.prefixlen_d = 128;
x->sel.prefixlen_s = 128;
*(struct in6_addr *)x->props.saddr.a6 = *(struct in6_addr *)saddr;
*(struct in6_addr *)x->id.daddr.a6 = *(struct in6_addr *)daddr;
x->props.saddr.in6 = saddr->in6;
x->id.daddr.in6 = daddr->in6;
break;
}