[NETFILTER]: nf_conntrack: use bool type in struct nf_conntrack_l4proto

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>

include/net/netfilter/nf_conntrack_l4proto.h

@@ -25,14 +25,13 @@ struct nf_conntrack_l4proto
 
 	/* Try to fill in the third arg: dataoff is offset past network protocol
            hdr.  Return true if possible. */
-	int (*pkt_to_tuple)(const struct sk_buff *skb,
-			    unsigned int dataoff,
+	bool (*pkt_to_tuple)(const struct sk_buff *skb, unsigned int dataoff,
 			     struct nf_conntrack_tuple *tuple);
 
 	/* Invert the per-proto part of the tuple: ie. turn xmit into reply.
 	 * Some packets can't be inverted: return 0 in that case.
 	 */
-	int (*invert_tuple)(struct nf_conntrack_tuple *inverse,
+	bool (*invert_tuple)(struct nf_conntrack_tuple *inverse,
 			     const struct nf_conntrack_tuple *orig);
 
 	/* Returns verdict for packet, or -1 for invalid. */
@@ -45,7 +44,7 @@ struct nf_conntrack_l4proto
 
 	/* Called when a new connection for this protocol found;
 	 * returns TRUE if it's OK.  If so, packet() called next. */
-	int (*new)(struct nf_conn *ct, const struct sk_buff *skb,
+	bool (*new)(struct nf_conn *ct, const struct sk_buff *skb,
 		    unsigned int dataoff);
 
 	/* Called when a conntrack entry is destroyed */

net/ipv4/netfilter/nf_conntrack_proto_icmp.c

@@ -22,8 +22,7 @@
 
 static unsigned long nf_ct_icmp_timeout __read_mostly = 30*HZ;
 
-static int icmp_pkt_to_tuple(const struct sk_buff *skb,
-			     unsigned int dataoff,
+static bool icmp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
 			      struct nf_conntrack_tuple *tuple)
 {
 	const struct icmphdr *hp;
@@ -31,13 +30,13 @@ static int icmp_pkt_to_tuple(const struct sk_buff *skb,
 
 	hp = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr);
 	if (hp == NULL)
-		return 0;
+		return false;
 
 	tuple->dst.u.icmp.type = hp->type;
 	tuple->src.u.icmp.id = hp->un.echo.id;
 	tuple->dst.u.icmp.code = hp->code;
 
-	return 1;
+	return true;
 }
 
 /* Add 1; spaces filled with 0. */
@@ -52,17 +51,17 @@ static const u_int8_t invmap[] = {
 	[ICMP_ADDRESSREPLY] = ICMP_ADDRESS + 1
 };
 
-static int icmp_invert_tuple(struct nf_conntrack_tuple *tuple,
+static bool icmp_invert_tuple(struct nf_conntrack_tuple *tuple,
 			      const struct nf_conntrack_tuple *orig)
 {
 	if (orig->dst.u.icmp.type >= sizeof(invmap)
 	    || !invmap[orig->dst.u.icmp.type])
-		return 0;
+		return false;
 
 	tuple->src.u.icmp.id = orig->src.u.icmp.id;
 	tuple->dst.u.icmp.type = invmap[orig->dst.u.icmp.type] - 1;
 	tuple->dst.u.icmp.code = orig->dst.u.icmp.code;
-	return 1;
+	return true;
 }
 
 /* Print out the per-protocol part of the tuple. */
@@ -101,8 +100,8 @@ static int icmp_packet(struct nf_conn *ct,
 }
 
 /* Called when a new connection for this protocol found. */
-static int icmp_new(struct nf_conn *ct,
-		    const struct sk_buff *skb, unsigned int dataoff)
+static bool icmp_new(struct nf_conn *ct, const struct sk_buff *skb,
+		     unsigned int dataoff)
 {
 	static const u_int8_t valid_new[] = {
 		[ICMP_ECHO] = 1,
@@ -117,10 +116,10 @@ static int icmp_new(struct nf_conn *ct,
 		pr_debug("icmp: can't create new conn with type %u\n",
 			 ct->tuplehash[0].tuple.dst.u.icmp.type);
 		NF_CT_DUMP_TUPLE(&ct->tuplehash[0].tuple);
-		return 0;
+		return false;
 	}
 	atomic_set(&ct->proto.icmp.count, 0);
-	return 1;
+	return true;
 }
 
 /* Returns conntrack if it dealt with ICMP, and filled in skb fields */

net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c

@@ -28,7 +28,7 @@
 
 static unsigned long nf_ct_icmpv6_timeout __read_mostly = 30*HZ;
 
-static int icmpv6_pkt_to_tuple(const struct sk_buff *skb,
+static bool icmpv6_pkt_to_tuple(const struct sk_buff *skb,
 				unsigned int dataoff,
 				struct nf_conntrack_tuple *tuple)
 {
@@ -37,12 +37,12 @@ static int icmpv6_pkt_to_tuple(const struct sk_buff *skb,
 
 	hp = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr);
 	if (hp == NULL)
-		return 0;
+		return false;
 	tuple->dst.u.icmp.type = hp->icmp6_type;
 	tuple->src.u.icmp.id = hp->icmp6_identifier;
 	tuple->dst.u.icmp.code = hp->icmp6_code;
 
-	return 1;
+	return true;
 }
 
 /* Add 1; spaces filled with 0. */
@@ -53,17 +53,17 @@ static const u_int8_t invmap[] = {
 	[ICMPV6_NI_REPLY - 128]		= ICMPV6_NI_REPLY +1
 };
 
-static int icmpv6_invert_tuple(struct nf_conntrack_tuple *tuple,
+static bool icmpv6_invert_tuple(struct nf_conntrack_tuple *tuple,
 				const struct nf_conntrack_tuple *orig)
 {
 	int type = orig->dst.u.icmp.type - 128;
 	if (type < 0 || type >= sizeof(invmap) || !invmap[type])
-		return 0;
+		return false;
 
 	tuple->src.u.icmp.id   = orig->src.u.icmp.id;
 	tuple->dst.u.icmp.type = invmap[type] - 1;
 	tuple->dst.u.icmp.code = orig->dst.u.icmp.code;
-	return 1;
+	return true;
 }
 
 /* Print out the per-protocol part of the tuple. */
@@ -102,8 +102,7 @@ static int icmpv6_packet(struct nf_conn *ct,
 }
 
 /* Called when a new connection for this protocol found. */
-static int icmpv6_new(struct nf_conn *ct,
-		      const struct sk_buff *skb,
+static bool icmpv6_new(struct nf_conn *ct, const struct sk_buff *skb,
 		       unsigned int dataoff)
 {
 	static const u_int8_t valid_new[] = {
@@ -117,10 +116,10 @@ static int icmpv6_new(struct nf_conn *ct,
 		pr_debug("icmpv6: can't create new conn with type %u\n",
 			 type + 128);
 		NF_CT_DUMP_TUPLE(&ct->tuplehash[0].tuple);
-		return 0;
+		return false;
 	}
 	atomic_set(&ct->proto.icmp.count, 0);
-	return 1;
+	return true;
 }
 
 static int

net/netfilter/nf_conntrack_proto_dccp.c

@@ -393,29 +393,29 @@ dccp_state_table[CT_DCCP_ROLE_MAX + 1][DCCP_PKT_SYNCACK + 1][CT_DCCP_MAX + 1] =
 	},
 };
 
-static int dccp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
+static bool dccp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
 			      struct nf_conntrack_tuple *tuple)
 {
 	struct dccp_hdr _hdr, *dh;
 
 	dh = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr);
 	if (dh == NULL)
-		return 0;
+		return false;
 
 	tuple->src.u.dccp.port = dh->dccph_sport;
 	tuple->dst.u.dccp.port = dh->dccph_dport;
-	return 1;
+	return true;
 }
 
-static int dccp_invert_tuple(struct nf_conntrack_tuple *inv,
+static bool dccp_invert_tuple(struct nf_conntrack_tuple *inv,
 			      const struct nf_conntrack_tuple *tuple)
 {
 	inv->src.u.dccp.port = tuple->dst.u.dccp.port;
 	inv->dst.u.dccp.port = tuple->src.u.dccp.port;
-	return 1;
+	return true;
 }
 
-static int dccp_new(struct nf_conn *ct, const struct sk_buff *skb,
+static bool dccp_new(struct nf_conn *ct, const struct sk_buff *skb,
 		     unsigned int dataoff)
 {
 	struct dccp_hdr _dh, *dh;
@@ -442,12 +442,12 @@ static int dccp_new(struct nf_conn *ct, const struct sk_buff *skb,
 	ct->proto.dccp.role[IP_CT_DIR_ORIGINAL] = CT_DCCP_ROLE_CLIENT;
 	ct->proto.dccp.role[IP_CT_DIR_REPLY] = CT_DCCP_ROLE_SERVER;
 	ct->proto.dccp.state = CT_DCCP_NONE;
-	return 1;
+	return true;
 
 out_invalid:
 	if (LOG_INVALID(IPPROTO_DCCP))
 		nf_log_packet(nf_ct_l3num(ct), 0, skb, NULL, NULL, NULL, msg);
-	return 0;
+	return false;
 }
 
 static u64 dccp_ack_seq(const struct dccp_hdr *dh)

net/netfilter/nf_conntrack_proto_generic.c

@@ -14,23 +14,23 @@
 
 static unsigned int nf_ct_generic_timeout __read_mostly = 600*HZ;
 
-static int generic_pkt_to_tuple(const struct sk_buff *skb,
+static bool generic_pkt_to_tuple(const struct sk_buff *skb,
 				 unsigned int dataoff,
 				 struct nf_conntrack_tuple *tuple)
 {
 	tuple->src.u.all = 0;
 	tuple->dst.u.all = 0;
 
-	return 1;
+	return true;
 }
 
-static int generic_invert_tuple(struct nf_conntrack_tuple *tuple,
+static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple,
 				 const struct nf_conntrack_tuple *orig)
 {
 	tuple->src.u.all = 0;
 	tuple->dst.u.all = 0;
 
-	return 1;
+	return true;
 }
 
 /* Print out the per-protocol part of the tuple. */
@@ -53,10 +53,10 @@ static int packet(struct nf_conn *ct,
 }
 
 /* Called when a new connection for this protocol found. */
-static int new(struct nf_conn *ct, const struct sk_buff *skb,
+static bool new(struct nf_conn *ct, const struct sk_buff *skb,
 		unsigned int dataoff)
 {
-	return 1;
+	return true;
 }
 
 #ifdef CONFIG_SYSCTL

net/netfilter/nf_conntrack_proto_gre.c

@@ -148,17 +148,16 @@ EXPORT_SYMBOL_GPL(nf_ct_gre_keymap_destroy);
 /* PUBLIC CONNTRACK PROTO HELPER FUNCTIONS */
 
 /* invert gre part of tuple */
-static int gre_invert_tuple(struct nf_conntrack_tuple *tuple,
+static bool gre_invert_tuple(struct nf_conntrack_tuple *tuple,
 			     const struct nf_conntrack_tuple *orig)
 {
 	tuple->dst.u.gre.key = orig->src.u.gre.key;
 	tuple->src.u.gre.key = orig->dst.u.gre.key;
-	return 1;
+	return true;
 }
 
 /* gre hdr info to tuple */
-static int gre_pkt_to_tuple(const struct sk_buff *skb,
-			   unsigned int dataoff,
+static bool gre_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
 			     struct nf_conntrack_tuple *tuple)
 {
 	const struct gre_hdr_pptp *pgrehdr;
@@ -173,24 +172,24 @@ static int gre_pkt_to_tuple(const struct sk_buff *skb,
 		/* try to behave like "nf_conntrack_proto_generic" */
 		tuple->src.u.all = 0;
 		tuple->dst.u.all = 0;
-		return 1;
+		return true;
 	}
 
 	/* PPTP header is variable length, only need up to the call_id field */
 	pgrehdr = skb_header_pointer(skb, dataoff, 8, &_pgrehdr);
 	if (!pgrehdr)
-		return 1;
+		return true;
 
 	if (ntohs(grehdr->protocol) != GRE_PROTOCOL_PPTP) {
 		pr_debug("GRE_VERSION_PPTP but unknown proto\n");
-		return 0;
+		return false;
 	}
 
 	tuple->dst.u.gre.key = pgrehdr->call_id;
 	srckey = gre_keymap_lookup(tuple);
 	tuple->src.u.gre.key = srckey;
 
-	return 1;
+	return true;
 }
 
 /* print gre part of tuple */
@@ -235,7 +234,7 @@ static int gre_packet(struct nf_conn *ct,
 }
 
 /* Called when a new connection for this protocol found. */
-static int gre_new(struct nf_conn *ct, const struct sk_buff *skb,
+static bool gre_new(struct nf_conn *ct, const struct sk_buff *skb,
 		    unsigned int dataoff)
 {
 	pr_debug(": ");
@@ -246,7 +245,7 @@ static int gre_new(struct nf_conn *ct, const struct sk_buff *skb,
 	ct->proto.gre.stream_timeout = GRE_STREAM_TIMEOUT;
 	ct->proto.gre.timeout = GRE_TIMEOUT;
 
-	return 1;
+	return true;
 }
 
 /* Called when a conntrack entry has already been removed from the hashes

net/netfilter/nf_conntrack_proto_sctp.c

@@ -130,8 +130,7 @@ static const u8 sctp_conntracks[2][9][SCTP_CONNTRACK_MAX] = {
 	}
 };
 
-static int sctp_pkt_to_tuple(const struct sk_buff *skb,
-			     unsigned int dataoff,
+static bool sctp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
 			      struct nf_conntrack_tuple *tuple)
 {
 	sctp_sctphdr_t _hdr, *hp;
@@ -139,19 +138,19 @@ static int sctp_pkt_to_tuple(const struct sk_buff *skb,
 	/* Actually only need first 8 bytes. */
 	hp = skb_header_pointer(skb, dataoff, 8, &_hdr);
 	if (hp == NULL)
-		return 0;
+		return false;
 
 	tuple->src.u.sctp.port = hp->source;
 	tuple->dst.u.sctp.port = hp->dest;
-	return 1;
+	return true;
 }
 
-static int sctp_invert_tuple(struct nf_conntrack_tuple *tuple,
+static bool sctp_invert_tuple(struct nf_conntrack_tuple *tuple,
 			      const struct nf_conntrack_tuple *orig)
 {
 	tuple->src.u.sctp.port = orig->dst.u.sctp.port;
 	tuple->dst.u.sctp.port = orig->src.u.sctp.port;
-	return 1;
+	return true;
 }
 
 /* Print out the per-protocol part of the tuple. */
@@ -390,7 +389,7 @@ out:
 }
 
 /* Called when a new connection for this protocol found. */
-static int sctp_new(struct nf_conn *ct, const struct sk_buff *skb,
+static bool sctp_new(struct nf_conn *ct, const struct sk_buff *skb,
 		     unsigned int dataoff)
 {
 	enum sctp_conntrack new_state;
@@ -401,16 +400,16 @@ static int sctp_new(struct nf_conn *ct, const struct sk_buff *skb,
 
 	sh = skb_header_pointer(skb, dataoff, sizeof(_sctph), &_sctph);
 	if (sh == NULL)
-		return 0;
+		return false;
 
 	if (do_basic_checks(ct, skb, dataoff, map) != 0)
-		return 0;
+		return false;
 
 	/* If an OOTB packet has any of these chunks discard (Sec 8.4) */
 	if (test_bit(SCTP_CID_ABORT, map) ||
 	    test_bit(SCTP_CID_SHUTDOWN_COMPLETE, map) ||
 	    test_bit(SCTP_CID_COOKIE_ACK, map))
-		return 0;
+		return false;
 
 	new_state = SCTP_CONNTRACK_MAX;
 	for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) {
@@ -422,7 +421,7 @@ static int sctp_new(struct nf_conn *ct, const struct sk_buff *skb,
 		if (new_state == SCTP_CONNTRACK_NONE ||
 		    new_state == SCTP_CONNTRACK_MAX) {
 			pr_debug("nf_conntrack_sctp: invalid new deleting.\n");
-			return 0;
+			return false;
 		}
 
 		/* Copy the vtag into the state info */
@@ -433,7 +432,7 @@ static int sctp_new(struct nf_conn *ct, const struct sk_buff *skb,
 				ih = skb_header_pointer(skb, offset + sizeof(sctp_chunkhdr_t),
 							sizeof(_inithdr), &_inithdr);
 				if (ih == NULL)
-					return 0;
+					return false;
 
 				pr_debug("Setting vtag %x for new conn\n",
 					 ih->init_tag);
@@ -442,7 +441,7 @@ static int sctp_new(struct nf_conn *ct, const struct sk_buff *skb,
 								ih->init_tag;
 			} else {
 				/* Sec 8.5.1 (A) */
-				return 0;
+				return false;
 			}
 		}
 		/* If it is a shutdown ack OOTB packet, we expect a return
@@ -456,7 +455,7 @@ static int sctp_new(struct nf_conn *ct, const struct sk_buff *skb,
 		ct->proto.sctp.state = new_state;
 	}
 
-	return 1;
+	return true;
 }
 
 #ifdef CONFIG_SYSCTL

net/netfilter/nf_conntrack_proto_tcp.c

@@ -257,8 +257,7 @@ static const u8 tcp_conntracks[2][6][TCP_CONNTRACK_MAX] = {
 	}
 };
 
-static int tcp_pkt_to_tuple(const struct sk_buff *skb,
-			    unsigned int dataoff,
+static bool tcp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
 			     struct nf_conntrack_tuple *tuple)
 {
 	const struct tcphdr *hp;
@@ -267,20 +266,20 @@ static int tcp_pkt_to_tuple(const struct sk_buff *skb,
 	/* Actually only need first 8 bytes. */
 	hp = skb_header_pointer(skb, dataoff, 8, &_hdr);
 	if (hp == NULL)
-		return 0;
+		return false;
 
 	tuple->src.u.tcp.port = hp->source;
 	tuple->dst.u.tcp.port = hp->dest;
 
-	return 1;
+	return true;
 }
 
-static int tcp_invert_tuple(struct nf_conntrack_tuple *tuple,
+static bool tcp_invert_tuple(struct nf_conntrack_tuple *tuple,
 			     const struct nf_conntrack_tuple *orig)
 {
 	tuple->src.u.tcp.port = orig->dst.u.tcp.port;
 	tuple->dst.u.tcp.port = orig->src.u.tcp.port;
-	return 1;
+	return true;
 }
 
 /* Print out the per-protocol part of the tuple. */
@@ -478,7 +477,7 @@ static void tcp_sack(const struct sk_buff *skb, unsigned int dataoff,
 	}
 }
 
-static int tcp_in_window(const struct nf_conn *ct,
+static bool tcp_in_window(const struct nf_conn *ct,
 			  struct ip_ct_tcp *state,
 			  enum ip_conntrack_dir dir,
 			  unsigned int index,
@@ -491,7 +490,7 @@ static int tcp_in_window(const struct nf_conn *ct,
 	struct ip_ct_tcp_state *receiver = &state->seen[!dir];
 	const struct nf_conntrack_tuple *tuple = &ct->tuplehash[dir].tuple;
 	__u32 seq, ack, sack, end, win, swin;
-	int res;
+	bool res;
 
 	/*
 	 * Get the required data from the packet.
@@ -657,12 +656,12 @@ static int tcp_in_window(const struct nf_conn *ct,
 				state->retrans = 0;
 			}
 		}
-		res = 1;
+		res = true;
 	} else {
-		res = 0;
+		res = false;
 		if (sender->flags & IP_CT_TCP_FLAG_BE_LIBERAL ||
 		    nf_ct_tcp_be_liberal)
-			res = 1;
+			res = true;
 		if (!res && LOG_INVALID(IPPROTO_TCP))
 			nf_log_packet(pf, 0, skb, NULL, NULL, NULL,
 			"nf_ct_tcp: %s ",
@@ -676,7 +675,7 @@ static int tcp_in_window(const struct nf_conn *ct,
 			: "SEQ is over the upper bound (over the window of the receiver)");
 	}
 
-	pr_debug("tcp_in_window: res=%i sender end=%u maxend=%u maxwin=%u "
+	pr_debug("tcp_in_window: res=%u sender end=%u maxend=%u maxwin=%u "
 		 "receiver end=%u maxend=%u maxwin=%u\n",
 		 res, sender->td_end, sender->td_maxend, sender->td_maxwin,
 		 receiver->td_end, receiver->td_maxend, receiver->td_maxwin);
@@ -982,8 +981,7 @@ static int tcp_packet(struct nf_conn *ct,
 }
 
 /* Called when a new connection for this protocol found. */
-static int tcp_new(struct nf_conn *ct,
-		   const struct sk_buff *skb,
+static bool tcp_new(struct nf_conn *ct, const struct sk_buff *skb,
 		    unsigned int dataoff)
 {
 	enum tcp_conntrack new_state;
@@ -1003,7 +1001,7 @@ static int tcp_new(struct nf_conn *ct,
 	/* Invalid: delete conntrack */
 	if (new_state >= TCP_CONNTRACK_MAX) {
 		pr_debug("nf_ct_tcp: invalid new deleting.\n");
-		return 0;
+		return false;
 	}
 
 	if (new_state == TCP_CONNTRACK_SYN_SENT) {
@@ -1021,7 +1019,7 @@ static int tcp_new(struct nf_conn *ct,
 		ct->proto.tcp.seen[1].flags = 0;
 	} else if (nf_ct_tcp_loose == 0) {
 		/* Don't try to pick up connections. */
-		return 0;
+		return false;
 	} else {
 		/*
 		 * We are in the middle of a connection,
@@ -1061,7 +1059,7 @@ static int tcp_new(struct nf_conn *ct,
 		 sender->td_scale,
 		 receiver->td_end, receiver->td_maxend, receiver->td_maxwin,
 		 receiver->td_scale);
-	return 1;
+	return true;
 }
 
 #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)

net/netfilter/nf_conntrack_proto_udp.c

@@ -26,7 +26,7 @@
 static unsigned int nf_ct_udp_timeout __read_mostly = 30*HZ;
 static unsigned int nf_ct_udp_timeout_stream __read_mostly = 180*HZ;
 
-static int udp_pkt_to_tuple(const struct sk_buff *skb,
+static bool udp_pkt_to_tuple(const struct sk_buff *skb,
 			     unsigned int dataoff,
 			     struct nf_conntrack_tuple *tuple)
 {
@@ -36,20 +36,20 @@ static int udp_pkt_to_tuple(const struct sk_buff *skb,
 	/* Actually only need first 8 bytes. */
 	hp = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr);
 	if (hp == NULL)
-		return 0;
+		return false;
 
 	tuple->src.u.udp.port = hp->source;
 	tuple->dst.u.udp.port = hp->dest;
 
-	return 1;
+	return true;
 }
 
-static int udp_invert_tuple(struct nf_conntrack_tuple *tuple,
+static bool udp_invert_tuple(struct nf_conntrack_tuple *tuple,
 			     const struct nf_conntrack_tuple *orig)
 {
 	tuple->src.u.udp.port = orig->dst.u.udp.port;
 	tuple->dst.u.udp.port = orig->src.u.udp.port;
-	return 1;
+	return true;
 }
 
 /* Print out the per-protocol part of the tuple. */
@@ -83,10 +83,10 @@ static int udp_packet(struct nf_conn *ct,
 }
 
 /* Called when a new connection for this protocol found. */
-static int udp_new(struct nf_conn *ct, const struct sk_buff *skb,
+static bool udp_new(struct nf_conn *ct, const struct sk_buff *skb,
 		    unsigned int dataoff)
 {
-	return 1;
+	return true;
 }
 
 static int udp_error(struct sk_buff *skb, unsigned int dataoff,

net/netfilter/nf_conntrack_proto_udplite.c

@@ -27,7 +27,7 @@
 static unsigned int nf_ct_udplite_timeout __read_mostly = 30*HZ;
 static unsigned int nf_ct_udplite_timeout_stream __read_mostly = 180*HZ;
 
-static int udplite_pkt_to_tuple(const struct sk_buff *skb,
+static bool udplite_pkt_to_tuple(const struct sk_buff *skb,
 				 unsigned int dataoff,
 				 struct nf_conntrack_tuple *tuple)
 {
@@ -36,19 +36,19 @@ static int udplite_pkt_to_tuple(const struct sk_buff *skb,
 
 	hp = skb_header_pointer(skb, dataoff, sizeof(_hdr), &_hdr);
 	if (hp == NULL)
-		return 0;
+		return false;
 
 	tuple->src.u.udp.port = hp->source;
 	tuple->dst.u.udp.port = hp->dest;
-	return 1;
+	return true;
 }
 
-static int udplite_invert_tuple(struct nf_conntrack_tuple *tuple,
+static bool udplite_invert_tuple(struct nf_conntrack_tuple *tuple,
 				 const struct nf_conntrack_tuple *orig)
 {
 	tuple->src.u.udp.port = orig->dst.u.udp.port;
 	tuple->dst.u.udp.port = orig->src.u.udp.port;
-	return 1;
+	return true;
 }
 
 /* Print out the per-protocol part of the tuple. */
@@ -83,10 +83,10 @@ static int udplite_packet(struct nf_conn *ct,
 }
 
 /* Called when a new connection for this protocol found. */
-static int udplite_new(struct nf_conn *ct, const struct sk_buff *skb,
+static bool udplite_new(struct nf_conn *ct, const struct sk_buff *skb,
 			unsigned int dataoff)
 {
-	return 1;
+	return true;
 }
 
 static int udplite_error(struct sk_buff *skb, unsigned int dataoff,