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

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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 @@ release:
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 @@ resubmit:
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;
/*