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Commit 1695fb46 authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'ipv6_null' 



Ian Morris says:

====================
ipv6: coding style - comparisons with NULL

The following patches address some coding style issues only. No
functional changes and no changes detected by objdiff.

The IPV6 code uses multiple different styles when comparing with NULL
(I.e. x == NULL and !x as well as x != NULL and x). Generally the
latter form is preferred according to checkpatch and so this changes
aligns the code to this style.
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents bc48878c 53b24b8f

net/ipv6/addrconf.c

+44 −44
Original line number Diff line number Diff line
@@ -334,7 +334,7 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev) 
		return ERR_PTR(-EINVAL);



	ndev = kzalloc(sizeof(struct inet6_dev), GFP_KERNEL);

	if (ndev == NULL)

	if (!ndev)

		return ERR_PTR(err);



	rwlock_init(&ndev->lock);
@@ -346,7 +346,7 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev) 
	ndev->cnf.mtu6 = dev->mtu;

	ndev->cnf.sysctl = NULL;

	ndev->nd_parms = neigh_parms_alloc(dev, &nd_tbl);

	if (ndev->nd_parms == NULL) {

	if (!ndev->nd_parms) {

		kfree(ndev);

		return ERR_PTR(err);

	}
@@ -481,7 +481,7 @@ static int inet6_netconf_fill_devconf(struct sk_buff *skb, int ifindex, 


	nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct netconfmsg),

			flags);

	if (nlh == NULL)

	if (!nlh)

		return -EMSGSIZE;



	ncm = nlmsg_data(nlh);
@@ -519,7 +519,7 @@ void inet6_netconf_notify_devconf(struct net *net, int type, int ifindex, 
	int err = -ENOBUFS;



	skb = nlmsg_new(inet6_netconf_msgsize_devconf(type), GFP_ATOMIC);

	if (skb == NULL)

	if (!skb)

		goto errout;



	err = inet6_netconf_fill_devconf(skb, ifindex, devconf, 0, 0,
@@ -574,10 +574,10 @@ static int inet6_netconf_get_devconf(struct sk_buff *in_skb, 
		break;

	default:

		dev = __dev_get_by_index(net, ifindex);

		if (dev == NULL)

		if (!dev)

			goto errout;

		in6_dev = __in6_dev_get(dev);

		if (in6_dev == NULL)

		if (!in6_dev)

			goto errout;

		devconf = &in6_dev->cnf;

		break;
@@ -585,7 +585,7 @@ static int inet6_netconf_get_devconf(struct sk_buff *in_skb, 


	err = -ENOBUFS;

	skb = nlmsg_new(inet6_netconf_msgsize_devconf(-1), GFP_ATOMIC);

	if (skb == NULL)

	if (!skb)

		goto errout;



	err = inet6_netconf_fill_devconf(skb, ifindex, devconf,
@@ -854,7 +854,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, 


	ifa = kzalloc(sizeof(struct inet6_ifaddr), GFP_ATOMIC);



	if (ifa == NULL) {

	if (!ifa) {

		ADBG("ipv6_add_addr: malloc failed\n");

		err = -ENOBUFS;

		goto out;
@@ -1558,7 +1558,7 @@ int ipv6_chk_addr_and_flags(struct net *net, const struct in6_addr *addr, 
			    : ifp->flags;

		if (ipv6_addr_equal(&ifp->addr, addr) &&

		    !(ifp_flags&banned_flags) &&

		    (dev == NULL || ifp->idev->dev == dev ||

		    (!dev || ifp->idev->dev == dev ||

		     !(ifp->scope&(IFA_LINK|IFA_HOST) || strict))) {

			rcu_read_unlock_bh();

			return 1;
@@ -1580,7 +1580,7 @@ static bool ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr, 
		if (!net_eq(dev_net(ifp->idev->dev), net))

			continue;

		if (ipv6_addr_equal(&ifp->addr, addr)) {

			if (dev == NULL || ifp->idev->dev == dev)

			if (!dev || ifp->idev->dev == dev)

				return true;

		}

	}
@@ -1649,7 +1649,7 @@ struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, const struct in6_addr *add 
		if (!net_eq(dev_net(ifp->idev->dev), net))

			continue;

		if (ipv6_addr_equal(&ifp->addr, addr)) {

			if (dev == NULL || ifp->idev->dev == dev ||

			if (!dev || ifp->idev->dev == dev ||

			    !(ifp->scope&(IFA_LINK|IFA_HOST) || strict)) {

				result = ifp;

				in6_ifa_hold(ifp);
@@ -2114,7 +2114,7 @@ static struct rt6_info *addrconf_get_prefix_route(const struct in6_addr *pfx, 
	struct fib6_table *table;



	table = fib6_get_table(dev_net(dev), RT6_TABLE_PREFIX);

	if (table == NULL)

	if (!table)

		return NULL;



	read_lock_bh(&table->tb6_lock);
@@ -2278,7 +2278,7 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len, bool sllao) 


	in6_dev = in6_dev_get(dev);



	if (in6_dev == NULL) {

	if (!in6_dev) {

		net_dbg_ratelimited("addrconf: device %s not configured\n",

				    dev->name);

		return;
@@ -2377,7 +2377,7 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len, bool sllao) 


		ifp = ipv6_get_ifaddr(net, &addr, dev, 1);



		if (ifp == NULL && valid_lft) {

		if (!ifp && valid_lft) {

			int max_addresses = in6_dev->cnf.max_addresses;



#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
@@ -2486,7 +2486,7 @@ int addrconf_set_dstaddr(struct net *net, void __user *arg) 
	dev = __dev_get_by_index(net, ireq.ifr6_ifindex);



	err = -ENODEV;

	if (dev == NULL)

	if (!dev)

		goto err_exit;



#if IS_ENABLED(CONFIG_IPV6_SIT)
@@ -2658,7 +2658,7 @@ static int inet6_addr_del(struct net *net, int ifindex, u32 ifa_flags, 
		return -ENODEV;



	idev = __in6_dev_get(dev);

	if (idev == NULL)

	if (!idev)

		return -ENXIO;



	read_lock_bh(&idev->lock);
@@ -2810,7 +2810,7 @@ static void init_loopback(struct net_device *dev) 
	ASSERT_RTNL();



	idev = ipv6_find_idev(dev);

	if (idev == NULL) {

	if (!idev) {

		pr_debug("%s: add_dev failed\n", __func__);

		return;

	}
@@ -3019,7 +3019,7 @@ static void addrconf_sit_config(struct net_device *dev) 
	 */



	idev = ipv6_find_idev(dev);

	if (idev == NULL) {

	if (!idev) {

		pr_debug("%s: add_dev failed\n", __func__);

		return;

	}
@@ -3044,7 +3044,7 @@ static void addrconf_gre_config(struct net_device *dev) 
	ASSERT_RTNL();



	idev = ipv6_find_idev(dev);

	if (idev == NULL) {

	if (!idev) {

		pr_debug("%s: add_dev failed\n", __func__);

		return;

	}
@@ -3241,7 +3241,7 @@ static int addrconf_ifdown(struct net_device *dev, int how) 
	neigh_ifdown(&nd_tbl, dev);



	idev = __in6_dev_get(dev);

	if (idev == NULL)

	if (!idev)

		return -ENODEV;



	/*
@@ -3996,7 +3996,7 @@ inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh) 


	ifm = nlmsg_data(nlh);

	pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer_pfx);

	if (pfx == NULL)

	if (!pfx)

		return -EINVAL;



	ifa_flags = tb[IFA_FLAGS] ? nla_get_u32(tb[IFA_FLAGS]) : ifm->ifa_flags;
@@ -4108,7 +4108,7 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh) 


	ifm = nlmsg_data(nlh);

	pfx = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer_pfx);

	if (pfx == NULL)

	if (!pfx)

		return -EINVAL;



	if (tb[IFA_CACHEINFO]) {
@@ -4123,7 +4123,7 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh) 
	}



	dev =  __dev_get_by_index(net, ifm->ifa_index);

	if (dev == NULL)

	if (!dev)

		return -ENODEV;



	ifa_flags = tb[IFA_FLAGS] ? nla_get_u32(tb[IFA_FLAGS]) : ifm->ifa_flags;
@@ -4133,7 +4133,7 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh) 
		     IFA_F_NOPREFIXROUTE | IFA_F_MCAUTOJOIN;



	ifa = ipv6_get_ifaddr(net, pfx, dev, 1);

	if (ifa == NULL) {

	if (!ifa) {

		/*

		 * It would be best to check for !NLM_F_CREATE here but

		 * userspace already relies on not having to provide this.
@@ -4208,7 +4208,7 @@ static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa, 
	u32 preferred, valid;



	nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags);

	if (nlh == NULL)

	if (!nlh)

		return -EMSGSIZE;



	put_ifaddrmsg(nlh, ifa->prefix_len, ifa->flags, rt_scope(ifa->scope),
@@ -4269,7 +4269,7 @@ static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca, 
		scope = RT_SCOPE_SITE;



	nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags);

	if (nlh == NULL)

	if (!nlh)

		return -EMSGSIZE;



	put_ifaddrmsg(nlh, 128, IFA_F_PERMANENT, scope, ifindex);
@@ -4295,7 +4295,7 @@ static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca, 
		scope = RT_SCOPE_SITE;



	nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct ifaddrmsg), flags);

	if (nlh == NULL)

	if (!nlh)

		return -EMSGSIZE;



	put_ifaddrmsg(nlh, 128, IFA_F_PERMANENT, scope, ifindex);
@@ -4468,7 +4468,7 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh) 
		goto errout;



	addr = extract_addr(tb[IFA_ADDRESS], tb[IFA_LOCAL], &peer);

	if (addr == NULL) {

	if (!addr) {

		err = -EINVAL;

		goto errout;

	}
@@ -4511,7 +4511,7 @@ static void inet6_ifa_notify(int event, struct inet6_ifaddr *ifa) 
	int err = -ENOBUFS;



	skb = nlmsg_new(inet6_ifaddr_msgsize(), GFP_ATOMIC);

	if (skb == NULL)

	if (!skb)

		goto errout;



	err = inet6_fill_ifaddr(skb, ifa, 0, 0, event, 0);
@@ -4664,24 +4664,24 @@ static int inet6_fill_ifla6_attrs(struct sk_buff *skb, struct inet6_dev *idev) 
	if (nla_put(skb, IFLA_INET6_CACHEINFO, sizeof(ci), &ci))

		goto nla_put_failure;

	nla = nla_reserve(skb, IFLA_INET6_CONF, DEVCONF_MAX * sizeof(s32));

	if (nla == NULL)

	if (!nla)

		goto nla_put_failure;

	ipv6_store_devconf(&idev->cnf, nla_data(nla), nla_len(nla));



	/* XXX - MC not implemented */



	nla = nla_reserve(skb, IFLA_INET6_STATS, IPSTATS_MIB_MAX * sizeof(u64));

	if (nla == NULL)

	if (!nla)

		goto nla_put_failure;

	snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_STATS, nla_len(nla));



	nla = nla_reserve(skb, IFLA_INET6_ICMP6STATS, ICMP6_MIB_MAX * sizeof(u64));

	if (nla == NULL)

	if (!nla)

		goto nla_put_failure;

	snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_ICMP6STATS, nla_len(nla));



	nla = nla_reserve(skb, IFLA_INET6_TOKEN, sizeof(struct in6_addr));

	if (nla == NULL)

	if (!nla)

		goto nla_put_failure;



	if (nla_put_u8(skb, IFLA_INET6_ADDR_GEN_MODE, idev->addr_gen_mode))
@@ -4727,7 +4727,7 @@ static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token) 


	ASSERT_RTNL();



	if (token == NULL)

	if (!token)

		return -EINVAL;

	if (ipv6_addr_any(token))

		return -EINVAL;
@@ -4843,7 +4843,7 @@ static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev, 
	void *protoinfo;



	nlh = nlmsg_put(skb, portid, seq, event, sizeof(*hdr), flags);

	if (nlh == NULL)

	if (!nlh)

		return -EMSGSIZE;



	hdr = nlmsg_data(nlh);
@@ -4862,7 +4862,7 @@ static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev, 
	     nla_put_u32(skb, IFLA_LINK, dev->iflink)))

		goto nla_put_failure;

	protoinfo = nla_nest_start(skb, IFLA_PROTINFO);

	if (protoinfo == NULL)

	if (!protoinfo)

		goto nla_put_failure;



	if (inet6_fill_ifla6_attrs(skb, idev) < 0)
@@ -4923,7 +4923,7 @@ void inet6_ifinfo_notify(int event, struct inet6_dev *idev) 
	int err = -ENOBUFS;



	skb = nlmsg_new(inet6_if_nlmsg_size(), GFP_ATOMIC);

	if (skb == NULL)

	if (!skb)

		goto errout;



	err = inet6_fill_ifinfo(skb, idev, 0, 0, event, 0);
@@ -4956,7 +4956,7 @@ static int inet6_fill_prefix(struct sk_buff *skb, struct inet6_dev *idev, 
	struct prefix_cacheinfo	ci;



	nlh = nlmsg_put(skb, portid, seq, event, sizeof(*pmsg), flags);

	if (nlh == NULL)

	if (!nlh)

		return -EMSGSIZE;



	pmsg = nlmsg_data(nlh);
@@ -4995,7 +4995,7 @@ static void inet6_prefix_notify(int event, struct inet6_dev *idev, 
	int err = -ENOBUFS;



	skb = nlmsg_new(inet6_prefix_nlmsg_size(), GFP_ATOMIC);

	if (skb == NULL)

	if (!skb)

		goto errout;



	err = inet6_fill_prefix(skb, idev, pinfo, 0, 0, event, 0);
@@ -5596,7 +5596,7 @@ static int __addrconf_sysctl_register(struct net *net, char *dev_name, 
	char path[sizeof("net/ipv6/conf/") + IFNAMSIZ];



	t = kmemdup(&addrconf_sysctl, sizeof(*t), GFP_KERNEL);

	if (t == NULL)

	if (!t)

		goto out;



	for (i = 0; t->addrconf_vars[i].data; i++) {
@@ -5608,7 +5608,7 @@ static int __addrconf_sysctl_register(struct net *net, char *dev_name, 
	snprintf(path, sizeof(path), "net/ipv6/conf/%s", dev_name);



	t->sysctl_header = register_net_sysctl(net, path, t->addrconf_vars);

	if (t->sysctl_header == NULL)

	if (!t->sysctl_header)

		goto free;



	p->sysctl = t;
@@ -5624,7 +5624,7 @@ static void __addrconf_sysctl_unregister(struct ipv6_devconf *p) 
{

	struct addrconf_sysctl_table *t;



	if (p->sysctl == NULL)

	if (!p->sysctl)

		return;



	t = p->sysctl;
@@ -5667,11 +5667,11 @@ static int __net_init addrconf_init_net(struct net *net) 
	struct ipv6_devconf *all, *dflt;



	all = kmemdup(&ipv6_devconf, sizeof(ipv6_devconf), GFP_KERNEL);

	if (all == NULL)

	if (!all)

		goto err_alloc_all;



	dflt = kmemdup(&ipv6_devconf_dflt, sizeof(ipv6_devconf_dflt), GFP_KERNEL);

	if (dflt == NULL)

	if (!dflt)

		goto err_alloc_dflt;



	/* these will be inherited by all namespaces */

net/ipv6/addrconf_core.c

+1 −1
Original line number Diff line number Diff line
@@ -140,7 +140,7 @@ void in6_dev_finish_destroy(struct inet6_dev *idev) 
	struct net_device *dev = idev->dev;



	WARN_ON(!list_empty(&idev->addr_list));

	WARN_ON(idev->mc_list != NULL);

	WARN_ON(idev->mc_list);

	WARN_ON(timer_pending(&idev->rs_timer));



#ifdef NET_REFCNT_DEBUG

net/ipv6/af_inet6.c

+7 −7
Original line number Diff line number Diff line
@@ -164,11 +164,11 @@ static int inet6_create(struct net *net, struct socket *sock, int protocol, 
	answer_flags = answer->flags;

	rcu_read_unlock();



	WARN_ON(answer_prot->slab == NULL);

	WARN_ON(!answer_prot->slab);



	err = -ENOBUFS;

	sk = sk_alloc(net, PF_INET6, GFP_KERNEL, answer_prot);

	if (sk == NULL)

	if (!sk)

		goto out;



	sock_init_data(sock, sk);
@@ -391,7 +391,7 @@ int inet6_release(struct socket *sock) 
{

	struct sock *sk = sock->sk;



	if (sk == NULL)

	if (!sk)

		return -EINVAL;



	/* Free mc lists */
@@ -413,11 +413,11 @@ void inet6_destroy_sock(struct sock *sk) 
	/* Release rx options */



	skb = xchg(&np->pktoptions, NULL);

	if (skb != NULL)

	if (skb)

		kfree_skb(skb);



	skb = xchg(&np->rxpmtu, NULL);

	if (skb != NULL)

	if (skb)

		kfree_skb(skb);



	/* Free flowlabels */
@@ -426,7 +426,7 @@ void inet6_destroy_sock(struct sock *sk) 
	/* Free tx options */



	opt = xchg(&np->opt, NULL);

	if (opt != NULL)

	if (opt)

		sock_kfree_s(sk, opt, opt->tot_len);

}

EXPORT_SYMBOL_GPL(inet6_destroy_sock);
@@ -640,7 +640,7 @@ int inet6_sk_rebuild_header(struct sock *sk) 


	dst = __sk_dst_check(sk, np->dst_cookie);



	if (dst == NULL) {

	if (!dst) {

		struct inet_sock *inet = inet_sk(sk);

		struct in6_addr *final_p, final;

		struct flowi6 fl6;

net/ipv6/ah6.c

+1 −1
Original line number Diff line number Diff line
@@ -681,7 +681,7 @@ static int ah6_init_state(struct xfrm_state *x) 
		goto error;



	ahp = kzalloc(sizeof(*ahp), GFP_KERNEL);

	if (ahp == NULL)

	if (!ahp)

		return -ENOMEM;



	ahash = crypto_alloc_ahash(x->aalg->alg_name, 0, 0);

net/ipv6/anycast.c

+5 −5
Original line number Diff line number Diff line
@@ -70,7 +70,7 @@ int ipv6_sock_ac_join(struct sock *sk, int ifindex, const struct in6_addr *addr) 
		return -EINVAL;



	pac = sock_kmalloc(sk, sizeof(struct ipv6_ac_socklist), GFP_KERNEL);

	if (pac == NULL)

	if (!pac)

		return -ENOMEM;

	pac->acl_next = NULL;

	pac->acl_addr = *addr;
@@ -93,7 +93,7 @@ int ipv6_sock_ac_join(struct sock *sk, int ifindex, const struct in6_addr *addr) 
	} else

		dev = __dev_get_by_index(net, ifindex);



	if (dev == NULL) {

	if (!dev) {

		err = -ENODEV;

		goto error;

	}
@@ -222,7 +222,7 @@ static struct ifacaddr6 *aca_alloc(struct rt6_info *rt, 
	struct ifacaddr6 *aca;



	aca = kzalloc(sizeof(*aca), GFP_ATOMIC);

	if (aca == NULL)

	if (!aca)

		return NULL;



	aca->aca_addr = *addr;
@@ -268,7 +268,7 @@ int __ipv6_dev_ac_inc(struct inet6_dev *idev, const struct in6_addr *addr) 
		goto out;

	}

	aca = aca_alloc(rt, addr);

	if (aca == NULL) {

	if (!aca) {

		ip6_rt_put(rt);

		err = -ENOMEM;

		goto out;
@@ -337,7 +337,7 @@ static int ipv6_dev_ac_dec(struct net_device *dev, const struct in6_addr *addr) 
{

	struct inet6_dev *idev = __in6_dev_get(dev);



	if (idev == NULL)

	if (!idev)

		return -ENODEV;

	return __ipv6_dev_ac_dec(idev, addr);

}