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Date: Sat, 28 Mar 2009 18:38:31 -0700
From: Harvey Harrison <harvey.harrison@...il.com>
To: David Miller <davem@...emloft.net>
Cc: linux-netdev <netdev@...r.kernel.org>
Subject: [RFC PATCH 2/3] 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@...il.com>
---
Feel free to delay this for 2.6.31 as I missed the merge window.
drivers/net/netconsole.c | 10 ++++------
include/linux/netpoll.h | 2 +-
net/core/netpoll.c | 31 +++++++++++++++----------------
3 files changed, 20 insertions(+), 23 deletions(-)
diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index d304d38..eceadf7 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 de99025..2524267 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 755414c..b5873bd 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) {
--
1.6.2.1.507.g0e68d
--
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