netfilter: Convert print_tuple functions to return void

Since adding a new function to seq_file (seq_has_overflowed())
there isn't any value for functions called from seq_show to
return anything.   Remove the int returns of the various
print_tuple/<foo>_print_tuple functions.

Link: http://lkml.kernel.org/p/f2e8cf8df433a197daa62cbaf124c900c708edc7.1412031505.git.joe@perches.com

Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Cc: netfilter-devel@vger.kernel.org
Cc: coreteam@netfilter.org
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

17 files changed, 70 insertions, 69 deletions

diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h
index cc0c18827602..f2f0fa3bb150 100644
--- a/include/net/netfilter/nf_conntrack_core.h
+++ b/include/net/netfilter/nf_conntrack_core.h
@@ -72,7 +72,7 @@ static inline int nf_conntrack_confirm(struct sk_buff *skb)
         return ret;
 }
 
-int
+void
 print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
             const struct nf_conntrack_l3proto *l3proto,
             const struct nf_conntrack_l4proto *proto);
diff --git a/include/net/netfilter/nf_conntrack_l3proto.h b/include/net/netfilter/nf_conntrack_l3proto.h
index adc1fa3dd7ab..cdc920b4c4c2 100644
--- a/include/net/netfilter/nf_conntrack_l3proto.h
+++ b/include/net/netfilter/nf_conntrack_l3proto.h
@@ -38,8 +38,8 @@ struct nf_conntrack_l3proto {
                              const struct nf_conntrack_tuple *orig);
 
         /* Print out the per-protocol part of the tuple. */
-        int (*print_tuple)(struct seq_file *s,
-                           const struct nf_conntrack_tuple *);
+        void (*print_tuple)(struct seq_file *s,
+                            const struct nf_conntrack_tuple *);
 
         /*
          * Called before tracking. 
diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h
index 82e4ec002a39..1f7061313d54 100644
--- a/include/net/netfilter/nf_conntrack_l4proto.h
+++ b/include/net/netfilter/nf_conntrack_l4proto.h
@@ -56,8 +56,8 @@ struct nf_conntrack_l4proto {
                      u_int8_t pf, unsigned int hooknum);
 
         /* Print out the per-protocol part of the tuple. Return like seq_* */
-        int (*print_tuple)(struct seq_file *s,
-                           const struct nf_conntrack_tuple *);
+        void (*print_tuple)(struct seq_file *s,
+                            const struct nf_conntrack_tuple *);
 
         /* Print out the private part of the conntrack. */
         void (*print_conntrack)(struct seq_file *s, struct nf_conn *);
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
index a054fe083431..5c61328b7704 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
@@ -56,11 +56,11 @@ static bool ipv4_invert_tuple(struct nf_conntrack_tuple *tuple,
         return true;
 }
 
-static int ipv4_print_tuple(struct seq_file *s,
+static void ipv4_print_tuple(struct seq_file *s,
                             const struct nf_conntrack_tuple *tuple)
 {
-        return seq_printf(s, "src=%pI4 dst=%pI4 ",
-                          &tuple->src.u3.ip, &tuple->dst.u3.ip);
+        seq_printf(s, "src=%pI4 dst=%pI4 ",
+                   &tuple->src.u3.ip, &tuple->dst.u3.ip);
 }
 
 static int ipv4_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
index 91f207c2cb69..d927f9e72130 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
@@ -153,8 +153,10 @@ static int ct_seq_show(struct seq_file *s, void *v)
         if (seq_has_overflowed(s))
                 goto release;
 
-        if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
-                        l3proto, l4proto))
+        print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
+                    l3proto, l4proto);
+
+        if (seq_has_overflowed(s))
                 goto release;
 
         if (seq_print_acct(s, ct, IP_CT_DIR_ORIGINAL))
@@ -164,8 +166,10 @@ static int ct_seq_show(struct seq_file *s, void *v)
                 if (seq_printf(s, "[UNREPLIED] "))
                         goto release;
 
-        if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
-                        l3proto, l4proto))
+        print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
+                    l3proto, l4proto);
+
+        if (seq_has_overflowed(s))
                 goto release;
 
         if (seq_print_acct(s, ct, IP_CT_DIR_REPLY))
diff --git a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
index b91b2641adda..80d5554b9a88 100644
--- a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
+++ b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
@@ -72,13 +72,13 @@ static bool icmp_invert_tuple(struct nf_conntrack_tuple *tuple,
 }
 
 /* Print out the per-protocol part of the tuple. */
-static int icmp_print_tuple(struct seq_file *s,
+static void icmp_print_tuple(struct seq_file *s,
                             const struct nf_conntrack_tuple *tuple)
 {
-        return seq_printf(s, "type=%u code=%u id=%u ",
-                          tuple->dst.u.icmp.type,
-                          tuple->dst.u.icmp.code,
-                          ntohs(tuple->src.u.icmp.id));
+        seq_printf(s, "type=%u code=%u id=%u ",
+                   tuple->dst.u.icmp.type,
+                   tuple->dst.u.icmp.code,
+                   ntohs(tuple->src.u.icmp.id));
 }
 
 static unsigned int *icmp_get_timeouts(struct net *net)
diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
index 4cbc6b290dd5..b68d0e59c1f8 100644
--- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
@@ -60,11 +60,11 @@ static bool ipv6_invert_tuple(struct nf_conntrack_tuple *tuple,
         return true;
 }
 
-static int ipv6_print_tuple(struct seq_file *s,
+static void ipv6_print_tuple(struct seq_file *s,
                             const struct nf_conntrack_tuple *tuple)
 {
-        return seq_printf(s, "src=%pI6 dst=%pI6 ",
-                          tuple->src.u3.ip6, tuple->dst.u3.ip6);
+        seq_printf(s, "src=%pI6 dst=%pI6 ",
+                   tuple->src.u3.ip6, tuple->dst.u3.ip6);
 }
 
 static int ipv6_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
diff --git a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
index b3807c5cb888..90388d606483 100644
--- a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
@@ -84,13 +84,13 @@ static bool icmpv6_invert_tuple(struct nf_conntrack_tuple *tuple,
 }
 
 /* Print out the per-protocol part of the tuple. */
-static int icmpv6_print_tuple(struct seq_file *s,
+static void icmpv6_print_tuple(struct seq_file *s,
                               const struct nf_conntrack_tuple *tuple)
 {
-        return seq_printf(s, "type=%u code=%u id=%u ",
-                          tuple->dst.u.icmp.type,
-                          tuple->dst.u.icmp.code,
-                          ntohs(tuple->src.u.icmp.id));
+        seq_printf(s, "type=%u code=%u id=%u ",
+                   tuple->dst.u.icmp.type,
+                   tuple->dst.u.icmp.code,
+                   ntohs(tuple->src.u.icmp.id));
 }
 
 static unsigned int *icmpv6_get_timeouts(struct net *net)
diff --git a/net/netfilter/nf_conntrack_l3proto_generic.c b/net/netfilter/nf_conntrack_l3proto_generic.c
index e7eb807fe07d..cf9ace70bece 100644
--- a/net/netfilter/nf_conntrack_l3proto_generic.c
+++ b/net/netfilter/nf_conntrack_l3proto_generic.c
@@ -49,10 +49,9 @@ static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple,
         return true;
 }
 
-static int generic_print_tuple(struct seq_file *s,
-                            const struct nf_conntrack_tuple *tuple)
+static void generic_print_tuple(struct seq_file *s,
+                                const struct nf_conntrack_tuple *tuple)
 {
-        return 0;
 }
 
 static int generic_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c
index 15971177470a..6dd995c7c72b 100644
--- a/net/netfilter/nf_conntrack_proto_dccp.c
+++ b/net/netfilter/nf_conntrack_proto_dccp.c
@@ -618,12 +618,12 @@ out_invalid:
         return -NF_ACCEPT;
 }
 
-static int dccp_print_tuple(struct seq_file *s,
-                            const struct nf_conntrack_tuple *tuple)
+static void dccp_print_tuple(struct seq_file *s,
+                             const struct nf_conntrack_tuple *tuple)
 {
-        return seq_printf(s, "sport=%hu dport=%hu ",
-                          ntohs(tuple->src.u.dccp.port),
-                          ntohs(tuple->dst.u.dccp.port));
+        seq_printf(s, "sport=%hu dport=%hu ",
+                   ntohs(tuple->src.u.dccp.port),
+                   ntohs(tuple->dst.u.dccp.port));
 }
 
 static void dccp_print_conntrack(struct seq_file *s, struct nf_conn *ct)
diff --git a/net/netfilter/nf_conntrack_proto_generic.c b/net/netfilter/nf_conntrack_proto_generic.c
index 957c1db66652..60865f110309 100644
--- a/net/netfilter/nf_conntrack_proto_generic.c
+++ b/net/netfilter/nf_conntrack_proto_generic.c
@@ -63,10 +63,9 @@ static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple,
 }
 
 /* Print out the per-protocol part of the tuple. */
-static int generic_print_tuple(struct seq_file *s,
-                               const struct nf_conntrack_tuple *tuple)
+static void generic_print_tuple(struct seq_file *s,
+                                const struct nf_conntrack_tuple *tuple)
 {
-        return 0;
 }
 
 static unsigned int *generic_get_timeouts(struct net *net)
diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index cba607ada069..7648674f29c3 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -226,12 +226,12 @@ static bool gre_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
 }
 
 /* print gre part of tuple */
-static int gre_print_tuple(struct seq_file *s,
-                           const struct nf_conntrack_tuple *tuple)
+static void gre_print_tuple(struct seq_file *s,
+                            const struct nf_conntrack_tuple *tuple)
 {
-        return seq_printf(s, "srckey=0x%x dstkey=0x%x ",
-                          ntohs(tuple->src.u.gre.key),
-                          ntohs(tuple->dst.u.gre.key));
+        seq_printf(s, "srckey=0x%x dstkey=0x%x ",
+                   ntohs(tuple->src.u.gre.key),
+                   ntohs(tuple->dst.u.gre.key));
 }
 
 /* print private data for conntrack */
diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c
index c61f4cd6407d..b45da90fad32 100644
--- a/net/netfilter/nf_conntrack_proto_sctp.c
+++ b/net/netfilter/nf_conntrack_proto_sctp.c
@@ -166,12 +166,12 @@ static bool sctp_invert_tuple(struct nf_conntrack_tuple *tuple,
 }
 
 /* Print out the per-protocol part of the tuple. */
-static int sctp_print_tuple(struct seq_file *s,
-                            const struct nf_conntrack_tuple *tuple)
+static void sctp_print_tuple(struct seq_file *s,
+                             const struct nf_conntrack_tuple *tuple)
 {
-        return seq_printf(s, "sport=%hu dport=%hu ",
-                          ntohs(tuple->src.u.sctp.port),
-                          ntohs(tuple->dst.u.sctp.port));
+        seq_printf(s, "sport=%hu dport=%hu ",
+                   ntohs(tuple->src.u.sctp.port),
+                   ntohs(tuple->dst.u.sctp.port));
 }
 
 /* Print out the private part of the conntrack. */
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 79668fd3db96..36a3ac8ee9f5 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -302,12 +302,12 @@ static bool tcp_invert_tuple(struct nf_conntrack_tuple *tuple,
 }
 
 /* Print out the per-protocol part of the tuple. */
-static int tcp_print_tuple(struct seq_file *s,
-                           const struct nf_conntrack_tuple *tuple)
+static void tcp_print_tuple(struct seq_file *s,
+                            const struct nf_conntrack_tuple *tuple)
 {
-        return seq_printf(s, "sport=%hu dport=%hu ",
-                          ntohs(tuple->src.u.tcp.port),
-                          ntohs(tuple->dst.u.tcp.port));
+        seq_printf(s, "sport=%hu dport=%hu ",
+                   ntohs(tuple->src.u.tcp.port),
+                   ntohs(tuple->dst.u.tcp.port));
 }
 
 /* Print out the private part of the conntrack. */
diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c
index 9d7721cbce4b..6957281ffee5 100644
--- a/net/netfilter/nf_conntrack_proto_udp.c
+++ b/net/netfilter/nf_conntrack_proto_udp.c
@@ -63,12 +63,12 @@ static bool udp_invert_tuple(struct nf_conntrack_tuple *tuple,
 }
 
 /* Print out the per-protocol part of the tuple. */
-static int udp_print_tuple(struct seq_file *s,
-                           const struct nf_conntrack_tuple *tuple)
+static void udp_print_tuple(struct seq_file *s,
+                            const struct nf_conntrack_tuple *tuple)
 {
-        return seq_printf(s, "sport=%hu dport=%hu ",
-                          ntohs(tuple->src.u.udp.port),
-                          ntohs(tuple->dst.u.udp.port));
+        seq_printf(s, "sport=%hu dport=%hu ",
+                   ntohs(tuple->src.u.udp.port),
+                   ntohs(tuple->dst.u.udp.port));
 }
 
 static unsigned int *udp_get_timeouts(struct net *net)
diff --git a/net/netfilter/nf_conntrack_proto_udplite.c b/net/netfilter/nf_conntrack_proto_udplite.c
index 2750e6c69f82..c5903d1649f9 100644
--- a/net/netfilter/nf_conntrack_proto_udplite.c
+++ b/net/netfilter/nf_conntrack_proto_udplite.c
@@ -71,12 +71,12 @@ static bool udplite_invert_tuple(struct nf_conntrack_tuple *tuple,
 }
 
 /* Print out the per-protocol part of the tuple. */
-static int udplite_print_tuple(struct seq_file *s,
-                               const struct nf_conntrack_tuple *tuple)
+static void udplite_print_tuple(struct seq_file *s,
+                                const struct nf_conntrack_tuple *tuple)
 {
-        return seq_printf(s, "sport=%hu dport=%hu ",
-                          ntohs(tuple->src.u.udp.port),
-                          ntohs(tuple->dst.u.udp.port));
+        seq_printf(s, "sport=%hu dport=%hu ",
+                   ntohs(tuple->src.u.udp.port),
+                   ntohs(tuple->dst.u.udp.port));
 }
 
 static unsigned int *udplite_get_timeouts(struct net *net)
diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index 348aa3602787..23a0dcab21d4 100644
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -36,12 +36,13 @@
 MODULE_LICENSE("GPL");
 
 #ifdef CONFIG_NF_CONNTRACK_PROCFS
-int
+void
 print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
             const struct nf_conntrack_l3proto *l3proto,
             const struct nf_conntrack_l4proto *l4proto)
 {
-        return l3proto->print_tuple(s, tuple) || l4proto->print_tuple(s, tuple);
+        l3proto->print_tuple(s, tuple);
+        l4proto->print_tuple(s, tuple);
 }
 EXPORT_SYMBOL_GPL(print_tuple);
 
@@ -202,9 +203,8 @@ static int ct_seq_show(struct seq_file *s, void *v)
         if (l4proto->print_conntrack)
                 l4proto->print_conntrack(s, ct);
 
-        if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
-                        l3proto, l4proto))
-                goto release;
+        print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
+                    l3proto, l4proto);
 
         if (seq_print_acct(s, ct, IP_CT_DIR_ORIGINAL))
                 goto release;
@@ -213,9 +213,8 @@ static int ct_seq_show(struct seq_file *s, void *v)
                 if (seq_printf(s, "[UNREPLIED] "))
                         goto release;
 
-        if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
-                        l3proto, l4proto))
-                goto release;
+        print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
+                    l3proto, l4proto);
 
         if (seq_print_acct(s, ct, IP_CT_DIR_REPLY))
                 goto release;