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IPv4: route.c: Change checks against 0xffffffff to ipv4_is_lbcast() 

Change a few checks against the hardcoded broadcast address,
0xffffffff, to ipv4_is_lbcast().  Remove some existing checks
using ipv4_is_lbcast() that are now obviously superfluous.

Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andy Walls 2010-10-17 15:11:22 +00:00 коммит произвёл David S. Miller
Родитель a47d60561e
Коммит 27a954bd56
1 изменённых файлов: 6 добавлений и 7 удалений
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13
net/ipv4/route.c
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@ -2124,7 +2124,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
ipv4_is_loopback(saddr)) ipv4_is_loopback(saddr))
goto martian_source; goto martian_source;
if (daddr == htonl(0xFFFFFFFF) || (saddr == 0 && daddr == 0)) if (ipv4_is_lbcast(daddr) || (saddr == 0 && daddr == 0))
goto brd_input; goto brd_input;
/* Accept zero addresses only to limited broadcast; /* Accept zero addresses only to limited broadcast;
@ -2133,8 +2133,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
if (ipv4_is_zeronet(saddr)) if (ipv4_is_zeronet(saddr))
goto martian_source; goto martian_source;
if (ipv4_is_lbcast(daddr) || ipv4_is_zeronet(daddr) || if (ipv4_is_zeronet(daddr) || ipv4_is_loopback(daddr))
ipv4_is_loopback(daddr))
goto martian_destination; goto martian_destination;
/* /*
@ -2367,11 +2366,11 @@ static int __mkroute_output(struct rtable **result,
if (ipv4_is_loopback(fl->fl4_src) && !(dev_out->flags & IFF_LOOPBACK)) if (ipv4_is_loopback(fl->fl4_src) && !(dev_out->flags & IFF_LOOPBACK))
return -EINVAL; return -EINVAL;
if (fl->fl4_dst == htonl(0xFFFFFFFF)) if (ipv4_is_lbcast(fl->fl4_dst))
res->type = RTN_BROADCAST; res->type = RTN_BROADCAST;
else if (ipv4_is_multicast(fl->fl4_dst)) else if (ipv4_is_multicast(fl->fl4_dst))
res->type = RTN_MULTICAST; res->type = RTN_MULTICAST;
else if (ipv4_is_lbcast(fl->fl4_dst) || ipv4_is_zeronet(fl->fl4_dst)) else if (ipv4_is_zeronet(fl->fl4_dst))
return -EINVAL; return -EINVAL;
if (dev_out->flags & IFF_LOOPBACK) if (dev_out->flags & IFF_LOOPBACK)
@ -2530,7 +2529,7 @@ static int ip_route_output_slow(struct net *net, struct rtable **rp,
if (oldflp->oif == 0 && if (oldflp->oif == 0 &&
(ipv4_is_multicast(oldflp->fl4_dst) || (ipv4_is_multicast(oldflp->fl4_dst) ||
oldflp->fl4_dst == htonl(0xFFFFFFFF))) { ipv4_is_lbcast(oldflp->fl4_dst))) {
/* It is equivalent to inet_addr_type(saddr) == RTN_LOCAL */ /* It is equivalent to inet_addr_type(saddr) == RTN_LOCAL */
dev_out = __ip_dev_find(net, oldflp->fl4_src, false); dev_out = __ip_dev_find(net, oldflp->fl4_src, false);
if (dev_out == NULL) if (dev_out == NULL)
@ -2574,7 +2573,7 @@ static int ip_route_output_slow(struct net *net, struct rtable **rp,
goto out; /* Wrong error code */ goto out; /* Wrong error code */
if (ipv4_is_local_multicast(oldflp->fl4_dst) || if (ipv4_is_local_multicast(oldflp->fl4_dst) ||
oldflp->fl4_dst == htonl(0xFFFFFFFF)) { ipv4_is_lbcast(oldflp->fl4_dst)) {
if (!fl.fl4_src) if (!fl.fl4_src)
fl.fl4_src = inet_select_addr(dev_out, 0, fl.fl4_src = inet_select_addr(dev_out, 0,
RT_SCOPE_LINK); RT_SCOPE_LINK);