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[IPV6] address: Convert address dumping to new netlink api 

Replaces INET6_IFADDR_RTA_SPACE with a new function calculating
the total required message size for all address messages.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf 2006-09-18 00:12:35 -07:00 committed by David S. Miller
parent 101bb22969
commit 0ab6803bc9
1 changed files with 33 additions and 46 deletions
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79
net/ipv6/addrconf.c
View File

@ -3040,23 +3040,27 @@ static inline int rt_scope(int ifa_scope)
return RT_SCOPE_UNIVERSE;
}
/* Maximum length of ifa_cacheinfo attributes */
#define INET6_IFADDR_RTA_SPACE \
RTA_SPACE(16) /* IFA_ADDRESS */ + \
RTA_SPACE(sizeof(struct ifa_cacheinfo)) /* CACHEINFO */
static inline int inet6_ifaddr_msgsize(void)
{
return nlmsg_total_size(sizeof(struct ifaddrmsg) +
nla_total_size(16) +
nla_total_size(sizeof(struct ifa_cacheinfo)) +
128);
}
static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
u32 pid, u32 seq, int event, unsigned int flags)
{
struct nlmsghdr *nlh;
unsigned char *b = skb->tail;
u32 preferred, valid;
nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
nlh = nlmsg_put(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
if (nlh == NULL)
return -ENOBUFS;
put_ifaddrmsg(nlh, ifa->prefix_len, ifa->flags, rt_scope(ifa->scope),
ifa->idev->dev->ifindex);
RTA_PUT(skb, IFA_ADDRESS, 16, &ifa->addr);
if (!(ifa->flags&IFA_F_PERMANENT)) {
preferred = ifa->prefered_lft;
valid = ifa->valid_lft;
@ -3071,72 +3075,57 @@ static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
valid = INFINITY_LIFE_TIME;
}
if (put_cacheinfo(skb, ifa->cstamp, ifa->tstamp, preferred, valid) < 0)
goto rtattr_failure;
if (nla_put(skb, IFA_ADDRESS, 16, &ifa->addr) < 0 ||
put_cacheinfo(skb, ifa->cstamp, ifa->tstamp, preferred, valid) < 0)
return nlmsg_cancel(skb, nlh);
nlh->nlmsg_len = skb->tail - b;
return skb->len;
nlmsg_failure:
rtattr_failure:
skb_trim(skb, b - skb->data);
return -1;
return nlmsg_end(skb, nlh);
}
static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
u32 pid, u32 seq, int event, u16 flags)
{
struct nlmsghdr *nlh;
unsigned char *b = skb->tail;
u8 scope = RT_SCOPE_UNIVERSE;
int ifindex = ifmca->idev->dev->ifindex;
if (ipv6_addr_scope(&ifmca->mca_addr) & IFA_SITE)
scope = RT_SCOPE_SITE;
nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
nlh = nlmsg_put(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
if (nlh == NULL)
return -ENOBUFS;
put_ifaddrmsg(nlh, 128, IFA_F_PERMANENT, scope, ifindex);
RTA_PUT(skb, IFA_MULTICAST, 16, &ifmca->mca_addr);
if (put_cacheinfo(skb, ifmca->mca_cstamp, ifmca->mca_tstamp,
if (nla_put(skb, IFA_MULTICAST, 16, &ifmca->mca_addr) < 0 ||
put_cacheinfo(skb, ifmca->mca_cstamp, ifmca->mca_tstamp,
INFINITY_LIFE_TIME, INFINITY_LIFE_TIME) < 0)
goto rtattr_failure;
return nlmsg_cancel(skb, nlh);
nlh->nlmsg_len = skb->tail - b;
return skb->len;
nlmsg_failure:
rtattr_failure:
skb_trim(skb, b - skb->data);
return -1;
return nlmsg_end(skb, nlh);
}
static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca,
u32 pid, u32 seq, int event, unsigned int flags)
{
struct nlmsghdr *nlh;
unsigned char *b = skb->tail;
u8 scope = RT_SCOPE_UNIVERSE;
int ifindex = ifaca->aca_idev->dev->ifindex;
if (ipv6_addr_scope(&ifaca->aca_addr) & IFA_SITE)
scope = RT_SCOPE_SITE;
nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
nlh = nlmsg_put(skb, pid, seq, event, sizeof(struct ifaddrmsg), flags);
if (nlh == NULL)
return -ENOBUFS;
put_ifaddrmsg(nlh, 128, IFA_F_PERMANENT, scope, ifindex);
RTA_PUT(skb, IFA_ANYCAST, 16, &ifaca->aca_addr);
if (put_cacheinfo(skb, ifaca->aca_cstamp, ifaca->aca_tstamp,
if (nla_put(skb, IFA_ANYCAST, 16, &ifaca->aca_addr) < 0 ||
put_cacheinfo(skb, ifaca->aca_cstamp, ifaca->aca_tstamp,
INFINITY_LIFE_TIME, INFINITY_LIFE_TIME) < 0)
goto rtattr_failure;
return nlmsg_cancel(skb, nlh);
nlh->nlmsg_len = skb->tail - b;
return skb->len;
nlmsg_failure:
rtattr_failure:
skb_trim(skb, b - skb->data);
return -1;
return nlmsg_end(skb, nlh);
}
enum addr_type_t
@ -3256,7 +3245,6 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr* nlh,
struct net_device *dev = NULL;
struct inet6_ifaddr *ifa;
struct sk_buff *skb;
int payload = sizeof(struct ifaddrmsg) + INET6_IFADDR_RTA_SPACE;
int err;
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy);
@ -3278,7 +3266,7 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr* nlh,
goto errout;
}
if ((skb = nlmsg_new(nlmsg_total_size(payload), GFP_KERNEL)) == NULL) {
if ((skb = nlmsg_new(inet6_ifaddr_msgsize(), GFP_KERNEL)) == NULL) {
err = -ENOBUFS;
goto errout_ifa;
}
@ -3300,10 +3288,9 @@ errout:
static void inet6_ifa_notify(int event, struct inet6_ifaddr *ifa)
{
struct sk_buff *skb;
int payload = sizeof(struct ifaddrmsg) + INET6_IFADDR_RTA_SPACE;
int err = -ENOBUFS;
skb = nlmsg_new(nlmsg_total_size(payload), GFP_ATOMIC);
skb = nlmsg_new(inet6_ifaddr_msgsize(), GFP_ATOMIC);
if (skb == NULL)
goto errout;