diff -paur linux-3.5.7/include/linux/sysctl.h linux-3.5.7_siad-sysctl/include/linux/sysctl.h
--- linux-3.5.7/include/linux/sysctl.h	2012-10-12 22:48:25.000000000 +0200
+++ linux-3.5.7_siad-sysctl/include/linux/sysctl.h	2014-10-21 14:26:13.260651350 +0200
@@ -425,6 +425,8 @@ enum
 	NET_TCP_ALLOWED_CONG_CONTROL=123,
 	NET_TCP_MAX_SSTHRESH=124,
 	NET_TCP_FRTO_RESPONSE=125,
+	NET_TCP_SIAD_NUM_RTT=128,
+	NET_TCP_SIAD_NUM_MS=129,
 };
 
 enum {
diff -paur linux-3.5.7/include/linux/tcp.h linux-3.5.7_siad-sysctl/include/linux/tcp.h
--- linux-3.5.7/include/linux/tcp.h	2012-10-12 22:48:25.000000000 +0200
+++ linux-3.5.7_siad-sysctl/include/linux/tcp.h	2014-03-31 18:36:50.000000000 +0200
@@ -110,6 +110,7 @@ enum {
 #define TCP_REPAIR_QUEUE	20
 #define TCP_QUEUE_SEQ		21
 #define TCP_REPAIR_OPTIONS	22
+#define TCP_SIAD_NUM_RTT	23
 
 struct tcp_repair_opt {
 	__u32	opt_code;
diff -paur linux-3.5.7/include/net/tcp.h linux-3.5.7_siad-sysctl/include/net/tcp.h
--- linux-3.5.7/include/net/tcp.h	2012-10-12 22:48:25.000000000 +0200
+++ linux-3.5.7_siad-sysctl/include/net/tcp.h	2014-10-21 14:27:02.212652513 +0200
@@ -253,6 +253,9 @@ extern int sysctl_tcp_cookie_size;
 extern int sysctl_tcp_thin_linear_timeouts;
 extern int sysctl_tcp_thin_dupack;
 extern int sysctl_tcp_early_retrans;
+extern int sysctl_tcp_siad_num_rtt;
+extern int sysctl_tcp_siad_num_ms;
+
 
 extern atomic_long_t tcp_memory_allocated;
 extern struct percpu_counter tcp_sockets_allocated;
Only in linux-3.5.7_siad-sysctl/include/net: tcp.h~
diff -paur linux-3.5.7/kernel/sysctl_binary.c linux-3.5.7_siad-sysctl/kernel/sysctl_binary.c
--- linux-3.5.7/kernel/sysctl_binary.c	2012-10-12 22:48:25.000000000 +0200
+++ linux-3.5.7_siad-sysctl/kernel/sysctl_binary.c	2014-10-21 14:27:33.283653252 +0200
@@ -400,6 +400,8 @@ static const struct bin_table bin_net_ip
 	/* NET_TCP_AVAIL_CONG_CONTROL "tcp_available_congestion_control" no longer used */
 	{ CTL_STR,	NET_TCP_ALLOWED_CONG_CONTROL,		"tcp_allowed_congestion_control" },
 	{ CTL_INT,	NET_TCP_MAX_SSTHRESH,			"tcp_max_ssthresh" },
+	{ CTL_INT,	NET_TCP_SIAD_NUM_RTT,			"tcp_siad_num_rtt" },
+	{ CTL_INT,	NET_TCP_SIAD_NUM_MS,			"tcp_siad_num_ms" },
 
 	{ CTL_INT,	NET_IPV4_ICMP_ECHO_IGNORE_ALL,		"icmp_echo_ignore_all" },
 	{ CTL_INT,	NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS,	"icmp_echo_ignore_broadcasts" },
diff -paur linux-3.5.7/net/ipv4/Kconfig linux-3.5.7_siad-sysctl/net/ipv4/Kconfig
--- linux-3.5.7/net/ipv4/Kconfig	2012-10-12 22:48:25.000000000 +0200
+++ linux-3.5.7_siad-sysctl/net/ipv4/Kconfig	2014-10-21 14:28:55.673655210 +0200
@@ -567,6 +567,19 @@ config TCP_CONG_ILLINOIS
 	For further details see:
 	  http://www.ews.uiuc.edu/~shaoliu/tcpillinois/index.html
 
+config TCP_CONG_SIAD
+	tristate "TCP SIAD"
+	depends on EXPERIMENTAL
+	default n
+	---help---
+	TCP SIAD is congestion control scheme that dynmaically adapt the 
+	increase step and the decrease factor (to the buffer size based on
+	RTT measurements). Further a new parameter configures the 
+	congestion event length and therefore the aggressivness.
+	
+	For further details see:
+	  http://mirja.kuehlewind.net/siad
+
 choice
 	prompt "Default TCP congestion control"
 	default DEFAULT_CUBIC
@@ -595,6 +608,9 @@ choice
 	config DEFAULT_WESTWOOD
 		bool "Westwood" if TCP_CONG_WESTWOOD=y
 
+	config DEFAULT_SIAD
+		bool "Siad" if TCP_CONG_SIAD=y
+
 	config DEFAULT_RENO
 		bool "Reno"
 
@@ -616,6 +632,7 @@ config DEFAULT_TCP_CONG
 	default "vegas" if DEFAULT_VEGAS
 	default "westwood" if DEFAULT_WESTWOOD
 	default "veno" if DEFAULT_VENO
+	default "siad" if DEFAULT_SIAD
 	default "reno" if DEFAULT_RENO
 	default "cubic"
 
diff -paur linux-3.5.7/net/ipv4/Makefile linux-3.5.7_siad-sysctl/net/ipv4/Makefile
--- linux-3.5.7/net/ipv4/Makefile	2012-10-12 22:48:25.000000000 +0200
+++ linux-3.5.7_siad-sysctl/net/ipv4/Makefile	2014-10-21 14:09:22.917029849 +0200
@@ -48,6 +48,7 @@ obj-$(CONFIG_TCP_CONG_SCALABLE) += tcp_s
 obj-$(CONFIG_TCP_CONG_LP) += tcp_lp.o
 obj-$(CONFIG_TCP_CONG_YEAH) += tcp_yeah.o
 obj-$(CONFIG_TCP_CONG_ILLINOIS) += tcp_illinois.o
+obj-$(CONFIG_TCP_CONG_SIAD) += tcp_siad.o
 obj-$(CONFIG_CGROUP_MEM_RES_CTLR_KMEM) += tcp_memcontrol.o
 obj-$(CONFIG_NETLABEL) += cipso_ipv4.o
 
diff -paur linux-3.5.7/net/ipv4/sysctl_net_ipv4.c linux-3.5.7_siad-sysctl/net/ipv4/sysctl_net_ipv4.c
--- linux-3.5.7/net/ipv4/sysctl_net_ipv4.c	2012-10-12 22:48:25.000000000 +0200
+++ linux-3.5.7_siad-sysctl/net/ipv4/sysctl_net_ipv4.c	2014-10-21 14:30:06.829656901 +0200
@@ -687,6 +687,20 @@ static struct ctl_table ipv4_table[] = {
 		.extra2		= &two,
 	},
 	{
+		.procname	= "tcp_siad_num_rtt",
+		.data		= &sysctl_tcp_siad_num_rtt,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
+		.procname	= "tcp_siad_num_ms",
+		.data		= &sysctl_tcp_siad_num_ms,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec,
+	},
+	{
 		.procname	= "udp_mem",
 		.data		= &sysctl_udp_mem,
 		.maxlen		= sizeof(sysctl_udp_mem),
diff -paur linux-3.5.7/net/ipv4/tcp.c linux-3.5.7_siad-sysctl/net/ipv4/tcp.c
--- linux-3.5.7/net/ipv4/tcp.c	2012-10-12 22:48:25.000000000 +0200
+++ linux-3.5.7_siad-sysctl/net/ipv4/tcp.c	2014-10-21 14:42:13.892674181 +0200
@@ -2638,6 +2638,15 @@ static int do_tcp_setsockopt(struct sock
 		else
 			icsk->icsk_user_timeout = msecs_to_jiffies(val);
 		break;
+	case TCP_SIAD_NUM_RTT:
+		/* Defines the desired distance between to congestion events in number of RTTs
+		 * if SIAD congestion control is used
+		 */
+		if (!strcmp(icsk->icsk_ca_ops->name, "siad") && val > 0) {
+			int *setvalue = (int*) inet_csk_ca(sk);
+			*setvalue = val;
+		}
+		break;
 	default:
 		err = -ENOPROTOOPT;
 		break;
diff -paur linux-3.5.7/net/ipv4/tcp_input.c linux-3.5.7_siad-sysctl/net/ipv4/tcp_input.c
--- linux-3.5.7/net/ipv4/tcp_input.c	2012-10-12 22:48:25.000000000 +0200
+++ linux-3.5.7_siad-sysctl/net/ipv4/tcp_input.c	2014-10-21 14:32:16.329659979 +0200
@@ -101,6 +101,9 @@ int sysctl_tcp_moderate_rcvbuf __read_mo
 int sysctl_tcp_abc __read_mostly;
 int sysctl_tcp_early_retrans __read_mostly = 2;
 
+int sysctl_tcp_siad_num_rtt __read_mostly = 0;
+int sysctl_tcp_siad_num_ms __read_mostly = 0;
+
 #define FLAG_DATA		0x01 /* Incoming frame contained data.		*/
 #define FLAG_WIN_UPDATE		0x02 /* Incoming ACK was a window update.	*/
 #define FLAG_DATA_ACKED		0x04 /* This ACK acknowledged new data.		*/
Only in linux-3.5.7_siad-sysctl/net/ipv4: tcp_siad.c