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ipv6: coding style improvements (remove assignment in if statements)

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This change has no functional impact and simply addresses some coding
style issues detected by checkpatch. Specifically this change
adjusts "if" statements which also include the assignment of a
variable.

No changes to the resultant object files result as determined by objdiff.

Signed-off-by: Ian Morris <ipm@chirality.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ian Morris 2014-11-23 21:28:43 +00:00 committed by David S. Miller
parent 78e2045d3d
commit e5d08d718a
13 changed files with 55 additions and 33 deletions
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12
net/ipv6/addrconf.c
View File

@ -2543,7 +2543,8 @@ static int inet6_addr_del(struct net *net, int ifindex, u32 ifa_flags,
if (!dev)
return -ENODEV;
if ((idev = __in6_dev_get(dev)) == NULL)
idev = __in6_dev_get(dev);
if (idev == NULL)
return -ENXIO;
read_lock_bh(&idev->lock);
@ -2690,7 +2691,8 @@ static void init_loopback(struct net_device *dev)
ASSERT_RTNL();
if ((idev = ipv6_find_idev(dev)) == NULL) {
idev = ipv6_find_idev(dev);
if (idev == NULL) {
pr_debug("%s: add_dev failed\n", __func__);
return;
}
@ -2813,7 +2815,8 @@ static void addrconf_sit_config(struct net_device *dev)
* our v4 addrs in the tunnel
*/
if ((idev = ipv6_find_idev(dev)) == NULL) {
idev = ipv6_find_idev(dev);
if (idev == NULL) {
pr_debug("%s: add_dev failed\n", __func__);
return;
}
@ -2837,7 +2840,8 @@ static void addrconf_gre_config(struct net_device *dev)
ASSERT_RTNL();
if ((idev = ipv6_find_idev(dev)) == NULL) {
idev = ipv6_find_idev(dev);
if (idev == NULL) {
pr_debug("%s: add_dev failed\n", __func__);
return;
}

7
net/ipv6/ah6.c
View File

@ -353,7 +353,8 @@ static int ah6_output(struct xfrm_state *x, struct sk_buff *skb)
ahp = x->data;
ahash = ahp->ahash;
if ((err = skb_cow_data(skb, 0, &trailer)) < 0)
err = skb_cow_data(skb, 0, &trailer);
if (err < 0)
goto out;
nfrags = err;
@ -559,8 +560,8 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
if (!pskb_may_pull(skb, ah_hlen))
goto out;
if ((err = skb_cow_data(skb, 0, &trailer)) < 0)
err = skb_cow_data(skb, 0, &trailer);
if (err < 0)
goto out;
nfrags = err;

3
net/ipv6/esp6.c
View File

@ -345,7 +345,8 @@ static int esp6_input(struct xfrm_state *x, struct sk_buff *skb)
goto out;
}
if ((nfrags = skb_cow_data(skb, 0, &trailer)) < 0) {
nfrags = skb_cow_data(skb, 0, &trailer);
if (nfrags < 0) {
ret = -EINVAL;
goto out;
}

3
net/ipv6/icmp.c
View File

@ -243,7 +243,8 @@ int icmpv6_push_pending_frames(struct sock *sk, struct flowi6 *fl6,
struct icmp6hdr *icmp6h;
int err = 0;
if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
skb = skb_peek(&sk->sk_write_queue);
if (skb == NULL)
goto out;
icmp6h = icmp6_hdr(skb);

6
net/ipv6/ip6_flowlabel.c
View File

@ -654,7 +654,11 @@ int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen)
goto done;
err = -ENOMEM;
if (sfl1 == NULL || (err = mem_check(sk)) != 0)
if (sfl1 == NULL)
goto done;
err = mem_check(sk);
if (err != 0)
goto done;
fl1 = fl_intern(net, fl, freq.flr_label);

3
net/ipv6/ip6_input.c
View File

@ -220,7 +220,8 @@ static int ip6_input_finish(struct sk_buff *skb)
nexthdr = skb_network_header(skb)[nhoff];
raw = raw6_local_deliver(skb, nexthdr);
if ((ipprot = rcu_dereference(inet6_protos[nexthdr])) != NULL) {
ipprot = rcu_dereference(inet6_protos[nexthdr]);
if (ipprot != NULL) {
int ret;
if (ipprot->flags & INET6_PROTO_FINAL) {

12
net/ipv6/ip6_output.c
View File

@ -898,7 +898,8 @@ static int ip6_dst_lookup_tail(struct sock *sk,
if (*dst == NULL)
*dst = ip6_route_output(net, sk, fl6);
if ((err = (*dst)->error))
err = (*dst)->error;
if (err)
goto out_err_release;
if (ipv6_addr_any(&fl6->saddr)) {
@ -946,7 +947,8 @@ static int ip6_dst_lookup_tail(struct sock *sk,
memcpy(&fl_gw6, fl6, sizeof(struct flowi6));
memset(&fl_gw6.daddr, 0, sizeof(struct in6_addr));
*dst = ip6_route_output(net, sk, &fl_gw6);
if ((err = (*dst)->error))
err = (*dst)->error;
if (err)
goto out_err_release;
}
}
@ -1054,7 +1056,8 @@ static inline int ip6_ufo_append_data(struct sock *sk,
* device, so create one single skb packet containing complete
* udp datagram
*/
if ((skb = skb_peek_tail(&sk->sk_write_queue)) == NULL) {
skb = skb_peek_tail(&sk->sk_write_queue);
if (skb == NULL) {
skb = sock_alloc_send_skb(sk,
hh_len + fragheaderlen + transhdrlen + 20,
(flags & MSG_DONTWAIT), &err);
@ -1534,7 +1537,8 @@ int ip6_push_pending_frames(struct sock *sk)
unsigned char proto = fl6->flowi6_proto;
int err = 0;
if ((skb = __skb_dequeue(&sk->sk_write_queue)) == NULL)
skb = __skb_dequeue(&sk->sk_write_queue);
if (skb == NULL)
goto out;
tail_skb = &(skb_shinfo(skb)->frag_list);

15
net/ipv6/ip6_tunnel.c
View File

@ -501,8 +501,8 @@ ip6_tnl_err(struct sk_buff *skb, __u8 ipproto, struct inet6_skb_parm *opt,
processing of the error. */
rcu_read_lock();
if ((t = ip6_tnl_lookup(dev_net(skb->dev), &ipv6h->daddr,
&ipv6h->saddr)) == NULL)
t = ip6_tnl_lookup(dev_net(skb->dev), &ipv6h->daddr, &ipv6h->saddr);
if (t == NULL)
goto out;
tproto = ACCESS_ONCE(t->parms.proto);
@ -550,7 +550,8 @@ ip6_tnl_err(struct sk_buff *skb, __u8 ipproto, struct inet6_skb_parm *opt,
mtu = IPV6_MIN_MTU;
t->dev->mtu = mtu;
if ((len = sizeof(*ipv6h) + ntohs(ipv6h->payload_len)) > mtu) {
len = sizeof(*ipv6h) + ntohs(ipv6h->payload_len);
if (len > mtu) {
rel_type = ICMPV6_PKT_TOOBIG;
rel_code = 0;
rel_info = mtu;
@ -811,9 +812,8 @@ static int ip6_tnl_rcv(struct sk_buff *skb, __u16 protocol,
int err;
rcu_read_lock();
if ((t = ip6_tnl_lookup(dev_net(skb->dev), &ipv6h->saddr,
&ipv6h->daddr)) != NULL) {
t = ip6_tnl_lookup(dev_net(skb->dev), &ipv6h->saddr, &ipv6h->daddr);
if (t != NULL) {
struct pcpu_sw_netstats *tstats;
tproto = ACCESS_ONCE(t->parms.proto);
@ -1069,7 +1069,8 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
(skb_cloned(skb) && !skb_clone_writable(skb, 0))) {
struct sk_buff *new_skb;
if (!(new_skb = skb_realloc_headroom(skb, max_headroom)))
new_skb = skb_realloc_headroom(skb, max_headroom);
if (!new_skb)
goto tx_err_dst_release;
if (skb->sk)

4
net/ipv6/ip6_vti.c
View File

@ -287,8 +287,8 @@ static int vti6_rcv(struct sk_buff *skb)
const struct ipv6hdr *ipv6h = ipv6_hdr(skb);
rcu_read_lock();
if ((t = vti6_tnl_lookup(dev_net(skb->dev), &ipv6h->saddr,
&ipv6h->daddr)) != NULL) {
t = vti6_tnl_lookup(dev_net(skb->dev), &ipv6h->saddr, &ipv6h->daddr);
if (t != NULL) {
if (t->parms.proto != IPPROTO_IPV6 && t->parms.proto != 0) {
rcu_read_unlock();
goto discard;

7
net/ipv6/ndisc.c
View File

@ -162,7 +162,8 @@ static void ndisc_fill_addr_option(struct sk_buff *skb, int type, void *data)
memcpy(opt+2, data, data_len);
data_len += 2;
opt += data_len;
if ((space -= data_len) > 0)
space -= data_len;
if (space > 0)
memset(opt, 0, space);
}
@ -656,8 +657,8 @@ static void ndisc_solicit(struct neighbour *neigh, struct sk_buff *skb)
if (skb && ipv6_chk_addr(dev_net(dev), &ipv6_hdr(skb)->saddr, dev, 1))
saddr = &ipv6_hdr(skb)->saddr;
if ((probes -= NEIGH_VAR(neigh->parms, UCAST_PROBES)) < 0) {
probes -= NEIGH_VAR(neigh->parms, UCAST_PROBES);
if (probes < 0) {
if (!(neigh->nud_state & NUD_VALID)) {
ND_PRINTK(1, dbg,
"%s: trying to ucast probe in NUD_INVALID: %pI6\n",

3
net/ipv6/reassembly.c
View File

@ -429,7 +429,8 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev,
struct sk_buff *clone;
int i, plen = 0;
if ((clone = alloc_skb(0, GFP_ATOMIC)) == NULL)
clone = alloc_skb(0, GFP_ATOMIC);
if (clone == NULL)
goto out_oom;
clone->next = head->next;
head->next = clone;

7
net/ipv6/sit.c
View File

@ -1241,7 +1241,8 @@ ipip6_tunnel_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
if (copy_from_user(&p, ifr->ifr_ifru.ifru_data, sizeof(p)))
goto done;
err = -ENOENT;
if ((t = ipip6_tunnel_locate(net, &p, 0)) == NULL)
t = ipip6_tunnel_locate(net, &p, 0);
if (t == NULL)
goto done;
err = -EPERM;
if (t == netdev_priv(sitn->fb_tunnel_dev))
@ -1836,8 +1837,8 @@ static int __net_init sit_init_net(struct net *net)
goto err_dev_free;
ipip6_tunnel_clone_6rd(sitn->fb_tunnel_dev, sitn);
if ((err = register_netdev(sitn->fb_tunnel_dev)))
err = register_netdev(sitn->fb_tunnel_dev);
if (err)
goto err_reg_dev;
t = netdev_priv(sitn->fb_tunnel_dev);

6
net/ipv6/udp.c
View File

@ -357,7 +357,8 @@ static struct sock *__udp6_lib_lookup_skb(struct sk_buff *skb,
struct sock *sk;
const struct ipv6hdr *iph = ipv6_hdr(skb);
if (unlikely(sk = skb_steal_sock(skb)))
sk = skb_steal_sock(skb);
if (unlikely(sk))
return sk;
return __udp6_lib_lookup(dev_net(skb_dst(skb)->dev), &iph->saddr, sport,
&iph->daddr, dport, inet6_iif(skb),
@ -1026,7 +1027,8 @@ static int udp_v6_push_pending_frames(struct sock *sk)
fl6 = &inet->cork.fl.u.ip6;
/* Grab the skbuff where UDP header space exists. */
if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
skb = skb_peek(&sk->sk_write_queue);
if (skb == NULL)
goto out;
/*