[TCP]: Convert several length variable to unsigned.

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>

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 5ec1cacca8a1e7a3b741f7af6e5a11715a3ac0a6..13ebe11a0af7d357b435d702edf7d5ce0c44116f 100644 (file)
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -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,

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index fc9bdd8b7dcf0db4d7e95a757aa62ae72cd157dc..9aea88b8d4fc6a9b5dd9f12c0160129770f47011 100644 (file)
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -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;
 

diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 0268e118f0b490536e9583892abae630abed60c8..00c08399837d00e31d91b26906392367a2bc3a26 100644 (file)
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -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;