tcp_hybla.c revision 6687e988d9aeaccad6774e6a8304f681f3ec0a03
1835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at/* 2835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * TCP HYBLA 3835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * 4835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * TCP-HYBLA Congestion control algorithm, based on: 5835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * C.Caini, R.Firrincieli, "TCP-Hybla: A TCP Enhancement 6835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * for Heterogeneous Networks", 7835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * International Journal on satellite Communications, 8835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * September 2004 9835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * Daniele Lacamera 10835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * root at danielinux.net 11835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at */ 12835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 13835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at#include <linux/config.h> 14835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at#include <linux/module.h> 15835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at#include <net/tcp.h> 16835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 17835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at/* Tcp Hybla structure. */ 18835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root atstruct hybla { 19835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at u8 hybla_en; 20835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at u32 snd_cwnd_cents; /* Keeps increment values when it is <1, <<7 */ 21835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at u32 rho; /* Rho parameter, integer part */ 22835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at u32 rho2; /* Rho * Rho, integer part */ 23835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at u32 rho_3ls; /* Rho parameter, <<3 */ 24835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at u32 rho2_7ls; /* Rho^2, <<7 */ 25835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at u32 minrtt; /* Minimum smoothed round trip time value seen */ 26835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at}; 27835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 28835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at/* Hybla reference round trip time (default= 1/40 sec = 25 ms), 29835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at expressed in jiffies */ 30835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root atstatic int rtt0 = 25; 31835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root atmodule_param(rtt0, int, 0644); 32835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root atMODULE_PARM_DESC(rtt0, "reference rout trip time (ms)"); 33835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 34835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 35835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at/* This is called to refresh values for hybla parameters */ 366687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melostatic inline void hybla_recalc_param (struct sock *sk) 37835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at{ 386687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melo struct hybla *ca = inet_csk_ca(sk); 39835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 406687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melo ca->rho_3ls = max_t(u32, tcp_sk(sk)->srtt / msecs_to_jiffies(rtt0), 8); 41835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at ca->rho = ca->rho_3ls >> 3; 42835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at ca->rho2_7ls = (ca->rho_3ls * ca->rho_3ls) << 1; 43835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at ca->rho2 = ca->rho2_7ls >>7; 44835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at} 45835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 466687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melostatic void hybla_init(struct sock *sk) 47835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at{ 486687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melo struct tcp_sock *tp = tcp_sk(sk); 496687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melo struct hybla *ca = inet_csk_ca(sk); 50835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 51835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at ca->rho = 0; 52835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at ca->rho2 = 0; 53835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at ca->rho_3ls = 0; 54835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at ca->rho2_7ls = 0; 55835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at ca->snd_cwnd_cents = 0; 56835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at ca->hybla_en = 1; 57835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at tp->snd_cwnd = 2; 58835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at tp->snd_cwnd_clamp = 65535; 59835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 60835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at /* 1st Rho measurement based on initial srtt */ 616687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melo hybla_recalc_param(sk); 62835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 63835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at /* set minimum rtt as this is the 1st ever seen */ 64835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at ca->minrtt = tp->srtt; 65835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at tp->snd_cwnd = ca->rho; 66835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at} 67835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 686687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melostatic void hybla_state(struct sock *sk, u8 ca_state) 69835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at{ 706687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melo struct hybla *ca = inet_csk_ca(sk); 71835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at ca->hybla_en = (ca_state == TCP_CA_Open); 72835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at} 73835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 74835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root atstatic inline u32 hybla_fraction(u32 odds) 75835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at{ 76835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at static const u32 fractions[] = { 77835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 128, 139, 152, 165, 181, 197, 215, 234, 78835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at }; 79835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 80835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at return (odds < ARRAY_SIZE(fractions)) ? fractions[odds] : 128; 81835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at} 82835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 83835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at/* TCP Hybla main routine. 84835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * This is the algorithm behavior: 85835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * o Recalc Hybla parameters if min_rtt has changed 86835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * o Give cwnd a new value based on the model proposed 87835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * o remember increments <1 88835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at */ 896687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melostatic void hybla_cong_avoid(struct sock *sk, u32 ack, u32 rtt, 90835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at u32 in_flight, int flag) 91835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at{ 926687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melo struct tcp_sock *tp = tcp_sk(sk); 936687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melo struct hybla *ca = inet_csk_ca(sk); 94835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at u32 increment, odd, rho_fractions; 95835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at int is_slowstart = 0; 96835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 97835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at /* Recalculate rho only if this srtt is the lowest */ 98835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at if (tp->srtt < ca->minrtt){ 996687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melo hybla_recalc_param(sk); 100835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at ca->minrtt = tp->srtt; 101835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at } 102835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 103835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at if (!ca->hybla_en) 1046687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melo return tcp_reno_cong_avoid(sk, ack, rtt, in_flight, flag); 105835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 106835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at if (in_flight < tp->snd_cwnd) 107835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at return; 108835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 109835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at if (ca->rho == 0) 1106687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melo hybla_recalc_param(sk); 111835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 112835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at rho_fractions = ca->rho_3ls - (ca->rho << 3); 113835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 114835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at if (tp->snd_cwnd < tp->snd_ssthresh) { 115835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at /* 116835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * slow start 117835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * INC = 2^RHO - 1 118835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * This is done by splitting the rho parameter 119835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * into 2 parts: an integer part and a fraction part. 120835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * Inrement<<7 is estimated by doing: 121835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * [2^(int+fract)]<<7 122835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * that is equal to: 123835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * (2^int) * [(2^fract) <<7] 124835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * 2^int is straightly computed as 1<<int, 125835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * while we will use hybla_slowstart_fraction_increment() to 126835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * calculate 2^fract in a <<7 value. 127835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at */ 128835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at is_slowstart = 1; 129835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at increment = ((1 << ca->rho) * hybla_fraction(rho_fractions)) 130835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at - 128; 131835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at } else { 132835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at /* 133835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * congestion avoidance 134835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * INC = RHO^2 / W 135835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * as long as increment is estimated as (rho<<7)/window 136835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at * it already is <<7 and we can easily count its fractions. 137835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at */ 138835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at increment = ca->rho2_7ls / tp->snd_cwnd; 139835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at if (increment < 128) 140835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at tp->snd_cwnd_cnt++; 141835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at } 142835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 143835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at odd = increment % 128; 144835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at tp->snd_cwnd += increment >> 7; 145835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at ca->snd_cwnd_cents += odd; 146835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 147835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at /* check when fractions goes >=128 and increase cwnd by 1. */ 148835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at while(ca->snd_cwnd_cents >= 128) { 149835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at tp->snd_cwnd++; 150835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at ca->snd_cwnd_cents -= 128; 151835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at tp->snd_cwnd_cnt = 0; 152835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at } 153835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 154835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at /* clamp down slowstart cwnd to ssthresh value. */ 155835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at if (is_slowstart) 156835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at tp->snd_cwnd = min(tp->snd_cwnd, tp->snd_ssthresh); 157835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 158835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at tp->snd_cwnd = min_t(u32, tp->snd_cwnd, tp->snd_cwnd_clamp); 159835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at} 160835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 161835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root atstatic struct tcp_congestion_ops tcp_hybla = { 162835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at .init = hybla_init, 163835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at .ssthresh = tcp_reno_ssthresh, 164835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at .min_cwnd = tcp_reno_min_cwnd, 165835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at .cong_avoid = hybla_cong_avoid, 166835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at .set_state = hybla_state, 167835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 168835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at .owner = THIS_MODULE, 169835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at .name = "hybla" 170835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at}; 171835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 172835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root atstatic int __init hybla_register(void) 173835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at{ 1746687e988d9aeaccad6774e6a8304f681f3ec0a03Arnaldo Carvalho de Melo BUG_ON(sizeof(struct hybla) > ICSK_CA_PRIV_SIZE); 175835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at return tcp_register_congestion_control(&tcp_hybla); 176835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at} 177835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 178835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root atstatic void __exit hybla_unregister(void) 179835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at{ 180835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at tcp_unregister_congestion_control(&tcp_hybla); 181835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at} 182835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 183835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root atmodule_init(hybla_register); 184835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root atmodule_exit(hybla_unregister); 185835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root at 186835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root atMODULE_AUTHOR("Daniele Lacamera"); 187835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root atMODULE_LICENSE("GPL"); 188835b3f0c0d7e1f716c45ec576662eac7a68b8548Daniele Lacamera <(root atMODULE_DESCRIPTION("TCP Hybla"); 189