if (tp->snd_cwnd <= tp->snd_ssthresh) { /* In "safe" area, increase. */ if (tp->snd_cwnd < tp->snd_cwnd_clamp) tp->snd_cwnd++; } else { /* In dangerous area, increase slowly. 
/* In "safe" area, increase. */ if (tp->snd_cwnd <= tp->snd_ssthresh) tcp_slow_start(tp); else { /* In dangerous area, increase slowly. 
void tcp_reno_cong_avoid(struct sock *sk, u32 ack, u32 rtt, u32 in_flight,			 int flag){	struct tcp_sock *tp = tcp_sk(sk);	if (!tcp_is_cwnd_limited(sk, in_flight))		return;        if (tp->snd_cwnd <= tp->snd_ssthresh) {                /* In "safe" area, increase. */		if (tp->snd_cwnd < tp->snd_cwnd_clamp)			tp->snd_cwnd++;	} else {                /* In dangerous area, increase slowly.		 * In theory this is tp->snd_cwnd += 1 / tp->snd_cwnd		 */		if (tp->snd_cwnd_cnt >= tp->snd_cwnd) {			if (tp->snd_cwnd < tp->snd_cwnd_clamp)				tp->snd_cwnd++;			tp->snd_cwnd_cnt = 0;		} else			tp->snd_cwnd_cnt++;	}}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/7faffa1c7fb9b8e8917e3225d4e2638270c0a48b/tcp_cong.c/clean/net/ipv4/tcp_cong.c