netpoll: store local and remote ip in net-endian

Allows for the removal of byteswapping in some places and
the removal of HIPQUAD (replaced by %pI4).

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 20 insertions, 23 deletions

diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index d304d38cd5d1..eceadf787a67 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -294,14 +294,12 @@ static ssize_t show_remote_port(struct netconsole_target *nt, char *buf)
 
 static ssize_t show_local_ip(struct netconsole_target *nt, char *buf)
 {
-        return snprintf(buf, PAGE_SIZE, "%d.%d.%d.%d\n",
-                        HIPQUAD(nt->np.local_ip));
+        return snprintf(buf, PAGE_SIZE, "%pI4\n", &nt->np.local_ip);
 }
 
 static ssize_t show_remote_ip(struct netconsole_target *nt, char *buf)
 {
-        return snprintf(buf, PAGE_SIZE, "%d.%d.%d.%d\n",
-                        HIPQUAD(nt->np.remote_ip));
+        return snprintf(buf, PAGE_SIZE, "%pI4\n", &nt->np.remote_ip);
 }
 
 static ssize_t show_local_mac(struct netconsole_target *nt, char *buf)
@@ -438,7 +436,7 @@ static ssize_t store_local_ip(struct netconsole_target *nt,
                 return -EINVAL;
         }
 
-        nt->np.local_ip = ntohl(in_aton(buf));
+        nt->np.local_ip = in_aton(buf);
 
         return strnlen(buf, count);
 }
@@ -454,7 +452,7 @@ static ssize_t store_remote_ip(struct netconsole_target *nt,
                 return -EINVAL;
         }
 
-        nt->np.remote_ip = ntohl(in_aton(buf));
+        nt->np.remote_ip = in_aton(buf);
 
         return strnlen(buf, count);
 }
diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h
index de99025f2c5d..2524267210d3 100644
--- a/include/linux/netpoll.h
+++ b/include/linux/netpoll.h
@@ -18,7 +18,7 @@ struct netpoll {
         const char *name;
         void (*rx_hook)(struct netpoll *, int, char *, int);
 
-        u32 local_ip, remote_ip;
+        __be32 local_ip, remote_ip;
         u16 local_port, remote_port;
         u8 remote_mac[ETH_ALEN];
 };
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 755414cd49d1..b5873bdff612 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -345,8 +345,8 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
         udph->dest = htons(np->remote_port);
         udph->len = htons(udp_len);
         udph->check = 0;
-        udph->check = csum_tcpudp_magic(htonl(np->local_ip),
-                                        htonl(np->remote_ip),
+        udph->check = csum_tcpudp_magic(np->local_ip,
+                                        np->remote_ip,
                                         udp_len, IPPROTO_UDP,
                                         csum_partial(udph, udp_len, 0));
         if (udph->check == 0)
@@ -365,8 +365,8 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
         iph->ttl      = 64;
         iph->protocol = IPPROTO_UDP;
         iph->check    = 0;
-        put_unaligned(htonl(np->local_ip), &(iph->saddr));
-        put_unaligned(htonl(np->remote_ip), &(iph->daddr));
+        put_unaligned(np->local_ip, &(iph->saddr));
+        put_unaligned(np->remote_ip, &(iph->daddr));
         iph->check    = ip_fast_csum((unsigned char *)iph, iph->ihl);
 
         eth = (struct ethhdr *) skb_push(skb, ETH_HLEN);
@@ -424,7 +424,7 @@ static void arp_reply(struct sk_buff *skb)
         memcpy(&tip, arp_ptr, 4);
 
         /* Should we ignore arp? */
-        if (tip != htonl(np->local_ip) ||
+        if (tip != np->local_ip ||
             ipv4_is_loopback(tip) || ipv4_is_multicast(tip))
                 return;
 
@@ -533,9 +533,9 @@ int __netpoll_rx(struct sk_buff *skb)
                 goto out;
         if (checksum_udp(skb, uh, ulen, iph->saddr, iph->daddr))
                 goto out;
-        if (np->local_ip && np->local_ip != ntohl(iph->daddr))
+        if (np->local_ip && np->local_ip != iph->daddr)
                 goto out;
-        if (np->remote_ip && np->remote_ip != ntohl(iph->saddr))
+        if (np->remote_ip && np->remote_ip != iph->saddr)
                 goto out;
         if (np->local_port && np->local_port != ntohs(uh->dest))
                 goto out;
@@ -560,14 +560,14 @@ void netpoll_print_options(struct netpoll *np)
 {
         printk(KERN_INFO "%s: local port %d\n",
                          np->name, np->local_port);
-        printk(KERN_INFO "%s: local IP %d.%d.%d.%d\n",
-                         np->name, HIPQUAD(np->local_ip));
+        printk(KERN_INFO "%s: local IP %pI4\n",
+                         np->name, &np->local_ip);
         printk(KERN_INFO "%s: interface %s\n",
                          np->name, np->dev_name);
         printk(KERN_INFO "%s: remote port %d\n",
                          np->name, np->remote_port);
-        printk(KERN_INFO "%s: remote IP %d.%d.%d.%d\n",
-                         np->name, HIPQUAD(np->remote_ip));
+        printk(KERN_INFO "%s: remote IP %pI4\n",
+                         np->name, &np->remote_ip);
         printk(KERN_INFO "%s: remote ethernet address %pM\n",
                          np->name, np->remote_mac);
 }
@@ -589,7 +589,7 @@ int netpoll_parse_options(struct netpoll *np, char *opt)
                 if ((delim = strchr(cur, '/')) == NULL)
                         goto parse_failed;
                 *delim = 0;
-                np->local_ip = ntohl(in_aton(cur));
+                np->local_ip = in_aton(cur);
                 cur = delim;
         }
         cur++;
@@ -618,7 +618,7 @@ int netpoll_parse_options(struct netpoll *np, char *opt)
         if ((delim = strchr(cur, '/')) == NULL)
                 goto parse_failed;
         *delim = 0;
-        np->remote_ip = ntohl(in_aton(cur));
+        np->remote_ip = in_aton(cur);
         cur = delim + 1;
 
         if (*cur != 0) {
@@ -759,10 +759,9 @@ int netpoll_setup(struct netpoll *np)
                         goto release;
                 }
 
-                np->local_ip = ntohl(in_dev->ifa_list->ifa_local);
+                np->local_ip = in_dev->ifa_list->ifa_local;
                 rcu_read_unlock();
-                printk(KERN_INFO "%s: local IP %d.%d.%d.%d\n",
-                       np->name, HIPQUAD(np->local_ip));
+                printk(KERN_INFO "%s: local IP %pI4\n", np->name, &np->local_ip);
         }
 
         if (np->rx_hook) {