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ipv6: Various cleanups in route.c

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1) x == NULL --> !x
2) x != NULL --> x
3) (x&BIT) --> (x & BIT)
4) (BIT1|BIT2) --> (BIT1 | BIT2)
5) proper argument and struct member alignment

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2011-12-03 18:02:47 -05:00
parent 507c9b1e07
commit 3830847396
1 changed files with 48 additions and 47 deletions
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65
net/ipv6/route.c
View File

@@ -247,7 +247,7 @@ static inline struct rt6_info *ip6_dst_alloc(struct dst_ops *ops,
{
struct rt6_info *rt = dst_alloc(ops, dev, 0, 0, flags);
if (rt != NULL)
if (rt)
memset(&rt->rt6i_table, 0,
sizeof(*rt) - sizeof(struct dst_entry));
@@ -263,7 +263,7 @@ static void ip6_dst_destroy(struct dst_entry *dst)
if (!(rt->dst.flags & DST_HOST))
dst_destroy_metrics_generic(dst);
if (idev != NULL) {
if (idev) {
rt->rt6i_idev = NULL;
in6_dev_put(idev);
}
@@ -299,10 +299,10 @@ static void ip6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
struct net_device *loopback_dev =
dev_net(dev)->loopback_dev;
if (dev != loopback_dev && idev != NULL && idev->dev == dev) {
if (dev != loopback_dev && idev && idev->dev == dev) {
struct inet6_dev *loopback_idev =
in6_dev_get(loopback_dev);
if (loopback_idev != NULL) {
if (loopback_idev) {
rt->rt6i_idev = loopback_idev;
in6_dev_put(idev);
}
@@ -344,7 +344,7 @@ static inline struct rt6_info *rt6_device_match(struct net *net,
if (dev->ifindex == oif)
return sprt;
if (dev->flags & IFF_LOOPBACK) {
if (sprt->rt6i_idev == NULL ||
if (!sprt->rt6i_idev ||
sprt->rt6i_idev->dev->ifindex != oif) {
if (flags & RT6_LOOKUP_F_IFACE && oif)
continue;
@@ -1073,11 +1073,11 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
struct inet6_dev *idev = in6_dev_get(dev);
struct net *net = dev_net(dev);
if (unlikely(idev == NULL))
if (unlikely(!idev))
return NULL;
rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, dev, 0);
if (unlikely(rt == NULL)) {
if (unlikely(!rt)) {
in6_dev_put(idev);
goto out;
}
@@ -1238,23 +1238,23 @@ int ip6_route_add(struct fib6_config *cfg)
cfg->fc_metric = IP6_RT_PRIO_USER;
err = -ENOBUFS;
if (NULL != cfg->fc_nlinfo.nlh &&
if (cfg->fc_nlinfo.nlh &&
!(cfg->fc_nlinfo.nlh->nlmsg_flags & NLM_F_CREATE)) {
table = fib6_get_table(net, cfg->fc_table);
if (table == NULL) {
if (!table) {
printk(KERN_WARNING "IPv6: NLM_F_CREATE should be specified when creating new route\n");
table = fib6_new_table(net, cfg->fc_table);
}
} else {
table = fib6_new_table(net, cfg->fc_table);
}
if (table == NULL) {
if (!table)
goto out;
}
rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, NULL, DST_NOCOUNT);
if (rt == NULL) {
if (!rt) {
err = -ENOMEM;
goto out;
}
@@ -1303,8 +1303,9 @@ int ip6_route_add(struct fib6_config *cfg)
they would result in kernel looping; promote them to reject routes
*/
if ((cfg->fc_flags & RTF_REJECT) ||
(dev && (dev->flags&IFF_LOOPBACK) && !(addr_type&IPV6_ADDR_LOOPBACK)
&& !(cfg->fc_flags&RTF_LOCAL))) {
(dev && (dev->flags & IFF_LOOPBACK) &&
!(addr_type & IPV6_ADDR_LOOPBACK) &&
!(cfg->fc_flags & RTF_LOCAL))) {
/* hold loopback dev/idev if we haven't done so. */
if (dev != net->loopback_dev) {
if (dev) {
@@ -1351,7 +1352,7 @@ int ip6_route_add(struct fib6_config *cfg)
grt = rt6_lookup(net, gw_addr, NULL, cfg->fc_ifindex, 1);
err = -EHOSTUNREACH;
if (grt == NULL)
if (!grt)
goto out;
if (dev) {
if (dev != grt->rt6i_dev) {
@@ -1372,12 +1373,12 @@ int ip6_route_add(struct fib6_config *cfg)
goto out;
}
err = -EINVAL;
if (dev == NULL || (dev->flags&IFF_LOOPBACK))
if (!dev || (dev->flags & IFF_LOOPBACK))
goto out;
}
err = -ENODEV;
if (dev == NULL)
if (!dev)
goto out;
if (!ipv6_addr_any(&cfg->fc_prefsrc)) {
@@ -1474,7 +1475,7 @@ static int ip6_route_del(struct fib6_config *cfg)
int err = -ESRCH;
table = fib6_get_table(cfg->fc_nlinfo.nl_net, cfg->fc_table);
if (table == NULL)
if (!table)
return err;
read_lock_bh(&table->tb6_lock);
@@ -1486,7 +1487,7 @@ static int ip6_route_del(struct fib6_config *cfg)
if (fn) {
for (rt = fn->leaf; rt; rt = rt->dst.rt6_next) {
if (cfg->fc_ifindex &&
(rt->rt6i_dev == NULL ||
(!rt->rt6i_dev ||
rt->rt6i_dev->ifindex != cfg->fc_ifindex))
continue;
if (cfg->fc_flags & RTF_GATEWAY &&
@@ -1631,7 +1632,7 @@ void rt6_redirect(const struct in6_addr *dest, const struct in6_addr *src,
goto out;
nrt = ip6_rt_copy(rt, dest);
if (nrt == NULL)
if (!nrt)
goto out;
nrt->rt6i_flags = RTF_GATEWAY|RTF_UP|RTF_DYNAMIC|RTF_CACHE;
@@ -1669,7 +1670,7 @@ static void rt6_do_pmtu_disc(const struct in6_addr *daddr, const struct in6_addr
int allfrag = 0;
again:
rt = rt6_lookup(net, daddr, saddr, ifindex, 0);
if (rt == NULL)
if (!rt)
return;
if (rt6_check_expired(rt)) {
@@ -1817,7 +1818,7 @@ static struct rt6_info *rt6_get_route_info(struct net *net,
struct fib6_table *table;
table = fib6_get_table(net, RT6_TABLE_INFO);
if (table == NULL)
if (!table)
return NULL;
write_lock_bh(&table->tb6_lock);
@@ -1876,7 +1877,7 @@ struct rt6_info *rt6_get_dflt_router(const struct in6_addr *addr, struct net_dev
struct fib6_table *table;
table = fib6_get_table(dev_net(dev), RT6_TABLE_DFLT);
if (table == NULL)
if (!table)
return NULL;
write_lock_bh(&table->tb6_lock);
@@ -1921,7 +1922,7 @@ void rt6_purge_dflt_routers(struct net *net)
/* NOTE: Keep consistent with rt6_get_dflt_router */
table = fib6_get_table(net, RT6_TABLE_DFLT);
if (table == NULL)
if (!table)
return;
restart:
@@ -2061,7 +2062,7 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
net->loopback_dev, 0);
struct neighbour *neigh;
if (rt == NULL) {
if (!rt) {
if (net_ratelimit())
pr_warning("IPv6: Maximum number of routes reached,"
" consider increasing route/max_size.\n");
@@ -2127,7 +2128,7 @@ static int fib6_remove_prefsrc(struct rt6_info *rt, void *arg)
struct net *net = ((struct arg_dev_net_ip *)arg)->net;
struct in6_addr *addr = ((struct arg_dev_net_ip *)arg)->addr;
if (((void *)rt->rt6i_dev == dev || dev == NULL) &&
if (((void *)rt->rt6i_dev == dev || !dev) &&
rt != net->ipv6.ip6_null_entry &&
ipv6_addr_equal(addr, &rt->rt6i_prefsrc.addr)) {
/* remove prefsrc entry */
@@ -2157,7 +2158,7 @@ static int fib6_ifdown(struct rt6_info *rt, void *arg)
const struct arg_dev_net *adn = arg;
const struct net_device *dev = adn->dev;
if ((rt->rt6i_dev == dev || dev == NULL) &&
if ((rt->rt6i_dev == dev || !dev) &&
rt != adn->net->ipv6.ip6_null_entry) {
RT6_TRACE("deleted by ifdown %p\n", rt);
return -1;
@@ -2194,7 +2195,7 @@ static int rt6_mtu_change_route(struct rt6_info *rt, void *p_arg)
*/
idev = __in6_dev_get(arg->dev);
if (idev == NULL)
if (!idev)
return 0;
/* For administrative MTU increase, there is no way to discover
@@ -2374,7 +2375,7 @@ static int rt6_fill_node(struct net *net,
}
nlh = nlmsg_put(skb, pid, seq, type, sizeof(*rtm), flags);
if (nlh == NULL)
if (!nlh)
return -EMSGSIZE;
rtm = nlmsg_data(nlh);
@@ -2546,7 +2547,7 @@ static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void
}
skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
if (skb == NULL) {
if (!skb) {
err = -ENOBUFS;
goto errout;
}
@@ -2581,10 +2582,10 @@ void inet6_rt_notify(int event, struct rt6_info *rt, struct nl_info *info)
int err;
err = -ENOBUFS;
seq = info->nlh != NULL ? info->nlh->nlmsg_seq : 0;
seq = info->nlh ? info->nlh->nlmsg_seq : 0;
skb = nlmsg_new(rt6_nlmsg_size(), gfp_any());
if (skb == NULL)
if (!skb)
goto errout;
err = rt6_fill_node(net, skb, rt, NULL, NULL, 0,