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Date: Tue, 23 Oct 2007 11:44:23 -0400
From: Chuck Lever <chuck.lever@...cle.com>
To: linux-kernel@...r.kernel.org
Cc: Chuck Lever <chuck.lever@...cle.com>
Subject: [PATCH 3/5] NET: Treat the sign of the result of skb_headroom()
consistently
In some places, the result of skb_headroom() is compared to an unsigned
integer, and in others, the result is compared to a signed integer. Make
the comparisons consistent and correct.
Signed-off-by: Chuck Lever <chuck.lever@...cle.com>
Cc: <netdev@...r.kernel.org>
---
include/linux/skbuff.h | 4 ++--
net/ipv4/ip_gre.c | 2 +-
net/ipv4/ip_output.c | 2 +-
net/ipv4/ipip.c | 2 +-
net/ipv4/ipvs/ip_vs_xmit.c | 2 +-
net/ipv4/tcp_input.c | 2 +-
net/ipv6/ip6_output.c | 2 +-
net/ipv6/ip6_tunnel.c | 2 +-
net/ipv6/sit.c | 2 +-
9 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 91f0bac..57257d2 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -994,7 +994,7 @@ static inline int pskb_may_pull(struct sk_buff *skb, unsigned int len)
*
* Return the number of bytes of free space at the head of an &sk_buff.
*/
-static inline int skb_headroom(const struct sk_buff *skb)
+static inline unsigned int skb_headroom(const struct sk_buff *skb)
{
return skb->data - skb->head;
}
@@ -1347,7 +1347,7 @@ static inline struct sk_buff *netdev_alloc_skb(struct net_device *dev,
* Returns true if modifying the header part of the cloned buffer
* does not requires the data to be copied.
*/
-static inline int skb_clone_writable(struct sk_buff *skb, int len)
+static inline int skb_clone_writable(struct sk_buff *skb, unsigned int len)
{
return !skb_header_cloned(skb) &&
skb_headroom(skb) + len <= skb->hdr_len;
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index f151900..c3568ab 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -674,7 +674,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
struct rtable *rt; /* Route to the other host */
struct net_device *tdev; /* Device to other host */
struct iphdr *iph; /* Our new IP header */
- int max_headroom; /* The extra header space needed */
+ unsigned int max_headroom; /* The extra header space needed */
int gre_hlen;
__be32 dst;
int mtu;
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index f508835..e5f7dc2 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -161,7 +161,7 @@ static inline int ip_finish_output2(struct sk_buff *skb)
struct dst_entry *dst = skb->dst;
struct rtable *rt = (struct rtable *)dst;
struct net_device *dev = dst->dev;
- int hh_len = LL_RESERVED_SPACE(dev);
+ unsigned int hh_len = LL_RESERVED_SPACE(dev);
if (rt->rt_type == RTN_MULTICAST)
IP_INC_STATS(IPSTATS_MIB_OUTMCASTPKTS);
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 5cd5bbe..8c2b2b0 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -515,7 +515,7 @@ static int ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
struct net_device *tdev; /* Device to other host */
struct iphdr *old_iph = ip_hdr(skb);
struct iphdr *iph; /* Our new IP header */
- int max_headroom; /* The extra header space needed */
+ unsigned int max_headroom; /* The extra header space needed */
__be32 dst = tiph->daddr;
int mtu;
diff --git a/net/ipv4/ipvs/ip_vs_xmit.c b/net/ipv4/ipvs/ip_vs_xmit.c
index d0a92de..7c074e3 100644
--- a/net/ipv4/ipvs/ip_vs_xmit.c
+++ b/net/ipv4/ipvs/ip_vs_xmit.c
@@ -325,7 +325,7 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
__be16 df = old_iph->frag_off;
sk_buff_data_t old_transport_header = skb->transport_header;
struct iphdr *iph; /* Our new IP header */
- int max_headroom; /* The extra header space needed */
+ unsigned int max_headroom; /* The extra header space needed */
int mtu;
EnterFunction(10);
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 9288220..3dbbb44 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -3909,7 +3909,7 @@ tcp_collapse(struct sock *sk, struct sk_buff_head *list,
while (before(start, end)) {
struct sk_buff *nskb;
- int header = skb_headroom(skb);
+ unsigned int header = skb_headroom(skb);
int copy = SKB_MAX_ORDER(header, 0);
/* Too big header? This can happen with IPv6. */
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 13565df..653fc0a 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -171,7 +171,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
u32 mtu;
if (opt) {
- int head_room;
+ unsigned int head_room;
/* First: exthdrs may take lots of space (~8K for now)
MAX_HEADER is not enough.
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 2320cc2..5383b33 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -838,7 +838,7 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
struct dst_entry *dst;
struct net_device *tdev;
int mtu;
- int max_headroom = sizeof(struct ipv6hdr);
+ unsigned int max_headroom = sizeof(struct ipv6hdr);
u8 proto;
int err = -1;
int pkt_len;
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 466657a..71433d2 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -430,7 +430,7 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
struct rtable *rt; /* Route to the other host */
struct net_device *tdev; /* Device to other host */
struct iphdr *iph; /* Our new IP header */
- int max_headroom; /* The extra header space needed */
+ unsigned int max_headroom; /* The extra header space needed */
__be32 dst = tiph->daddr;
int mtu;
struct in6_addr *addr6;
-
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