[TCP]: Convert several length variable to unsigned.
YOSHIFUJI Hideaki [Sat, 12 Jan 2008 10:16:03 +0000 (02:16 -0800)]
Several length variables cannot be negative, so convert int to
unsigned int.  This also allows us to do sane shift operations
on those variables.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/tcp.h
net/ipv4/tcp_ipv4.c
net/ipv6/tcp_ipv6.c

index 5ec1cac..13ebe11 100644 (file)
@@ -1155,7 +1155,8 @@ extern int                        tcp_v4_calc_md5_hash(char *md5_hash,
                                                     struct dst_entry *dst,
                                                     struct request_sock *req,
                                                     struct tcphdr *th,
-                                                    int protocol, int tcplen);
+                                                    int protocol,
+                                                    unsigned int tcplen);
 extern struct tcp_md5sig_key   *tcp_v4_md5_lookup(struct sock *sk,
                                                   struct sock *addr_sk);
 
@@ -1404,7 +1405,8 @@ struct tcp_sock_af_ops {
                                                  struct dst_entry *dst,
                                                  struct request_sock *req,
                                                  struct tcphdr *th,
-                                                 int protocol, int len);
+                                                 int protocol,
+                                                 unsigned int len);
        int                     (*md5_add) (struct sock *sk,
                                            struct sock *addr_sk,
                                            u8 *newkey,
index fc9bdd8..9aea88b 100644 (file)
@@ -99,7 +99,7 @@ static struct tcp_md5sig_key *tcp_v4_md5_do_lookup(struct sock *sk,
 static int tcp_v4_do_calc_md5_hash(char *md5_hash, struct tcp_md5sig_key *key,
                                   __be32 saddr, __be32 daddr,
                                   struct tcphdr *th, int protocol,
-                                  int tcplen);
+                                  unsigned int tcplen);
 #endif
 
 struct inet_hashinfo __cacheline_aligned tcp_hashinfo = {
@@ -1020,7 +1020,7 @@ static int tcp_v4_parse_md5_keys(struct sock *sk, char __user *optval,
 static int tcp_v4_do_calc_md5_hash(char *md5_hash, struct tcp_md5sig_key *key,
                                   __be32 saddr, __be32 daddr,
                                   struct tcphdr *th, int protocol,
-                                  int tcplen)
+                                  unsigned int tcplen)
 {
        struct scatterlist sg[4];
        __u16 data_len;
@@ -1113,7 +1113,7 @@ int tcp_v4_calc_md5_hash(char *md5_hash, struct tcp_md5sig_key *key,
                         struct dst_entry *dst,
                         struct request_sock *req,
                         struct tcphdr *th, int protocol,
-                        int tcplen)
+                        unsigned int tcplen)
 {
        __be32 saddr, daddr;
 
index 0268e11..00c0839 100644 (file)
@@ -733,7 +733,7 @@ static int tcp_v6_do_calc_md5_hash(char *md5_hash, struct tcp_md5sig_key *key,
                                   struct in6_addr *saddr,
                                   struct in6_addr *daddr,
                                   struct tcphdr *th, int protocol,
-                                  int tcplen)
+                                  unsigned int tcplen)
 {
        struct scatterlist sg[4];
        __u16 data_len;
@@ -818,7 +818,7 @@ static int tcp_v6_calc_md5_hash(char *md5_hash, struct tcp_md5sig_key *key,
                                struct dst_entry *dst,
                                struct request_sock *req,
                                struct tcphdr *th, int protocol,
-                               int tcplen)
+                               unsigned int tcplen)
 {
        struct in6_addr *saddr, *daddr;
 
@@ -985,7 +985,7 @@ static void tcp_v6_send_reset(struct sock *sk, struct sk_buff *skb)
        struct tcphdr *th = tcp_hdr(skb), *t1;
        struct sk_buff *buff;
        struct flowi fl;
-       int tot_len = sizeof(*th);
+       unsigned int tot_len = sizeof(*th);
 #ifdef CONFIG_TCP_MD5SIG
        struct tcp_md5sig_key *key;
 #endif
@@ -1085,7 +1085,7 @@ static void tcp_v6_send_ack(struct tcp_timewait_sock *tw,
        struct tcphdr *th = tcp_hdr(skb), *t1;
        struct sk_buff *buff;
        struct flowi fl;
-       int tot_len = sizeof(struct tcphdr);
+       unsigned int tot_len = sizeof(struct tcphdr);
        __be32 *topt;
 #ifdef CONFIG_TCP_MD5SIG
        struct tcp_md5sig_key *key;