[TCP]: Cong.ctrl modules: remove unused good_ack from cong_avoid

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

14 files changed, 24 insertions, 35 deletions

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 7e583261f3a..cdd0050b97a 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -652,7 +652,7 @@ struct tcp_congestion_ops {
         /* lower bound for congestion window (optional) */
         u32 (*min_cwnd)(const struct sock *sk);
         /* do new cwnd calculation (required) */
-        void (*cong_avoid)(struct sock *sk, u32 ack, u32 in_flight, int good_ack);
+        void (*cong_avoid)(struct sock *sk, u32 ack, u32 in_flight);
         /* call before changing ca_state (optional) */
         void (*set_state)(struct sock *sk, u8 new_state);
         /* call when cwnd event occurs (optional) */
@@ -683,7 +683,7 @@ extern void tcp_slow_start(struct tcp_sock *tp);
 
 extern struct tcp_congestion_ops tcp_init_congestion_ops;
 extern u32 tcp_reno_ssthresh(struct sock *sk);
-extern void tcp_reno_cong_avoid(struct sock *sk, u32 ack, u32 in_flight, int flag);
+extern void tcp_reno_cong_avoid(struct sock *sk, u32 ack, u32 in_flight);
 extern u32 tcp_reno_min_cwnd(const struct sock *sk);
 extern struct tcp_congestion_ops tcp_reno;
 
diff --git a/net/ipv4/tcp_bic.c b/net/ipv4/tcp_bic.c
index 5dba0fc8f57..5212ed9b0c9 100644
--- a/net/ipv4/tcp_bic.c
+++ b/net/ipv4/tcp_bic.c
@@ -136,8 +136,7 @@ static inline void bictcp_update(struct bictcp *ca, u32 cwnd)
                 ca->cnt = 1;
 }
 
-static void bictcp_cong_avoid(struct sock *sk, u32 ack,
-                              u32 in_flight, int data_acked)
+static void bictcp_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         struct bictcp *ca = inet_csk_ca(sk);
diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c
index 55fca1820c3..4451750b478 100644
--- a/net/ipv4/tcp_cong.c
+++ b/net/ipv4/tcp_cong.c
@@ -324,7 +324,7 @@ EXPORT_SYMBOL_GPL(tcp_slow_start);
 /* This is Jacobson's slow start and congestion avoidance.
  * SIGCOMM '88, p. 328.
  */
-void tcp_reno_cong_avoid(struct sock *sk, u32 ack, u32 in_flight, int flag)
+void tcp_reno_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 {
         struct tcp_sock *tp = tcp_sk(sk);
 
diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c
index 80bd084a9f9..3aa0b23c1ea 100644
--- a/net/ipv4/tcp_cubic.c
+++ b/net/ipv4/tcp_cubic.c
@@ -246,8 +246,7 @@ static inline void bictcp_update(struct bictcp *ca, u32 cwnd)
                 ca->cnt = 1;
 }
 
-static void bictcp_cong_avoid(struct sock *sk, u32 ack,
-                              u32 in_flight, int data_acked)
+static void bictcp_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         struct bictcp *ca = inet_csk_ca(sk);
diff --git a/net/ipv4/tcp_highspeed.c b/net/ipv4/tcp_highspeed.c
index 14a073d8b60..8b6caaf75bb 100644
--- a/net/ipv4/tcp_highspeed.c
+++ b/net/ipv4/tcp_highspeed.c
@@ -109,8 +109,7 @@ static void hstcp_init(struct sock *sk)
         tp->snd_cwnd_clamp = min_t(u32, tp->snd_cwnd_clamp, 0xffffffff/128);
 }
 
-static void hstcp_cong_avoid(struct sock *sk, u32 adk,
-                             u32 in_flight, int data_acked)
+static void hstcp_cong_avoid(struct sock *sk, u32 adk, u32 in_flight)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         struct hstcp *ca = inet_csk_ca(sk);
diff --git a/net/ipv4/tcp_htcp.c b/net/ipv4/tcp_htcp.c
index 5215691f276..af99776146f 100644
--- a/net/ipv4/tcp_htcp.c
+++ b/net/ipv4/tcp_htcp.c
@@ -225,8 +225,7 @@ static u32 htcp_recalc_ssthresh(struct sock *sk)
         return max((tp->snd_cwnd * ca->beta) >> 7, 2U);
 }
 
-static void htcp_cong_avoid(struct sock *sk, u32 ack,
-                            u32 in_flight, int data_acked)
+static void htcp_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         struct htcp *ca = inet_csk_ca(sk);
diff --git a/net/ipv4/tcp_hybla.c b/net/ipv4/tcp_hybla.c
index b3e55cf5617..44618b67591 100644
--- a/net/ipv4/tcp_hybla.c
+++ b/net/ipv4/tcp_hybla.c
@@ -85,8 +85,7 @@ static inline u32 hybla_fraction(u32 odds)
  *     o Give cwnd a new value based on the model proposed
  *     o remember increments <1
  */
-static void hybla_cong_avoid(struct sock *sk, u32 ack,
-                            u32 in_flight, int flag)
+static void hybla_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         struct hybla *ca = inet_csk_ca(sk);
@@ -103,7 +102,7 @@ static void hybla_cong_avoid(struct sock *sk, u32 ack,
                 return;
 
         if (!ca->hybla_en)
-                return tcp_reno_cong_avoid(sk, ack, in_flight, flag);
+                return tcp_reno_cong_avoid(sk, ack, in_flight);
 
         if (ca->rho == 0)
                 hybla_recalc_param(sk);
diff --git a/net/ipv4/tcp_illinois.c b/net/ipv4/tcp_illinois.c
index 5aa5f5496d6..1eba160b72d 100644
--- a/net/ipv4/tcp_illinois.c
+++ b/net/ipv4/tcp_illinois.c
@@ -256,8 +256,7 @@ static void tcp_illinois_state(struct sock *sk, u8 new_state)
 /*
  * Increase window in response to successful acknowledgment.
  */
-static void tcp_illinois_cong_avoid(struct sock *sk, u32 ack,
-                                    u32 in_flight, int flag)
+static void tcp_illinois_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         struct illinois *ca = inet_csk_ca(sk);
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index d313dea361a..cb441188870 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -2710,11 +2710,10 @@ static inline void tcp_ack_update_rtt(struct sock *sk, const int flag,
                 tcp_ack_no_tstamp(sk, seq_rtt, flag);
 }
 
-static void tcp_cong_avoid(struct sock *sk, u32 ack,
-                           u32 in_flight, int good)
+static void tcp_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 {
         const struct inet_connection_sock *icsk = inet_csk(sk);
-        icsk->icsk_ca_ops->cong_avoid(sk, ack, in_flight, good);
+        icsk->icsk_ca_ops->cong_avoid(sk, ack, in_flight);
         tcp_sk(sk)->snd_cwnd_stamp = tcp_time_stamp;
 }
 
@@ -3238,11 +3237,11 @@ static int tcp_ack(struct sock *sk, struct sk_buff *skb, int flag)
                 /* Advance CWND, if state allows this. */
                 if ((flag & FLAG_DATA_ACKED) && !frto_cwnd &&
                     tcp_may_raise_cwnd(sk, flag))
-                        tcp_cong_avoid(sk, ack, prior_in_flight, 0);
+                        tcp_cong_avoid(sk, ack, prior_in_flight);
                 tcp_fastretrans_alert(sk, prior_packets - tp->packets_out, flag);
         } else {
                 if ((flag & FLAG_DATA_ACKED) && !frto_cwnd)
-                        tcp_cong_avoid(sk, ack, prior_in_flight, 1);
+                        tcp_cong_avoid(sk, ack, prior_in_flight);
         }
 
         if ((flag & FLAG_FORWARD_PROGRESS) || !(flag&FLAG_NOT_DUP))
diff --git a/net/ipv4/tcp_lp.c b/net/ipv4/tcp_lp.c
index e7f5ef92cbd..ce3c41ff50b 100644
--- a/net/ipv4/tcp_lp.c
+++ b/net/ipv4/tcp_lp.c
@@ -115,12 +115,12 @@ static void tcp_lp_init(struct sock *sk)
  * Will only call newReno CA when away from inference.
  * From TCP-LP's paper, this will be handled in additive increasement.
  */
-static void tcp_lp_cong_avoid(struct sock *sk, u32 ack, u32 in_flight, int flag)
+static void tcp_lp_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 {
         struct lp *lp = inet_csk_ca(sk);
 
         if (!(lp->flag & LP_WITHIN_INF))
-                tcp_reno_cong_avoid(sk, ack, in_flight, flag);
+                tcp_reno_cong_avoid(sk, ack, in_flight);
 }
 
 /**
diff --git a/net/ipv4/tcp_scalable.c b/net/ipv4/tcp_scalable.c
index be27a33a1c6..2747ec7bfb6 100644
--- a/net/ipv4/tcp_scalable.c
+++ b/net/ipv4/tcp_scalable.c
@@ -15,8 +15,7 @@
 #define TCP_SCALABLE_AI_CNT     50U
 #define TCP_SCALABLE_MD_SCALE   3
 
-static void tcp_scalable_cong_avoid(struct sock *sk, u32 ack,
-                                    u32 in_flight, int flag)
+static void tcp_scalable_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 {
         struct tcp_sock *tp = tcp_sk(sk);
 
diff --git a/net/ipv4/tcp_vegas.c b/net/ipv4/tcp_vegas.c
index 007304e9984..be24d6ee34b 100644
--- a/net/ipv4/tcp_vegas.c
+++ b/net/ipv4/tcp_vegas.c
@@ -162,14 +162,13 @@ void tcp_vegas_cwnd_event(struct sock *sk, enum tcp_ca_event event)
 }
 EXPORT_SYMBOL_GPL(tcp_vegas_cwnd_event);
 
-static void tcp_vegas_cong_avoid(struct sock *sk, u32 ack,
-                                 u32 in_flight, int flag)
+static void tcp_vegas_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         struct vegas *vegas = inet_csk_ca(sk);
 
         if (!vegas->doing_vegas_now)
-                return tcp_reno_cong_avoid(sk, ack, in_flight, flag);
+                return tcp_reno_cong_avoid(sk, ack, in_flight);
 
         /* The key players are v_beg_snd_una and v_beg_snd_nxt.
          *
@@ -228,7 +227,7 @@ static void tcp_vegas_cong_avoid(struct sock *sk, u32 ack,
                         /* We don't have enough RTT samples to do the Vegas
                          * calculation, so we'll behave like Reno.
                          */
-                        tcp_reno_cong_avoid(sk, ack, in_flight, flag);
+                        tcp_reno_cong_avoid(sk, ack, in_flight);
                 } else {
                         u32 rtt, target_cwnd, diff;
 
diff --git a/net/ipv4/tcp_veno.c b/net/ipv4/tcp_veno.c
index 8fb2aee0b1a..d16689e9851 100644
--- a/net/ipv4/tcp_veno.c
+++ b/net/ipv4/tcp_veno.c
@@ -114,14 +114,13 @@ static void tcp_veno_cwnd_event(struct sock *sk, enum tcp_ca_event event)
                 tcp_veno_init(sk);
 }
 
-static void tcp_veno_cong_avoid(struct sock *sk, u32 ack,
-                                u32 in_flight, int flag)
+static void tcp_veno_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         struct veno *veno = inet_csk_ca(sk);
 
         if (!veno->doing_veno_now)
-                return tcp_reno_cong_avoid(sk, ack, in_flight, flag);
+                return tcp_reno_cong_avoid(sk, ack, in_flight);
 
         /* limited by applications */
         if (!tcp_is_cwnd_limited(sk, in_flight))
@@ -132,7 +131,7 @@ static void tcp_veno_cong_avoid(struct sock *sk, u32 ack,
                 /* We don't have enough rtt samples to do the Veno
                  * calculation, so we'll behave like Reno.
                  */
-                tcp_reno_cong_avoid(sk, ack, in_flight, flag);
+                tcp_reno_cong_avoid(sk, ack, in_flight);
         } else {
                 u32 rtt, target_cwnd;
 
diff --git a/net/ipv4/tcp_yeah.c b/net/ipv4/tcp_yeah.c
index c107fba7430..e03b10183a8 100644
--- a/net/ipv4/tcp_yeah.c
+++ b/net/ipv4/tcp_yeah.c
@@ -69,8 +69,7 @@ static void tcp_yeah_pkts_acked(struct sock *sk, u32 pkts_acked, s32 rtt_us)
         tcp_vegas_pkts_acked(sk, pkts_acked, rtt_us);
 }
 
-static void tcp_yeah_cong_avoid(struct sock *sk, u32 ack,
-                                u32 in_flight, int flag)
+static void tcp_yeah_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
 {
         struct tcp_sock *tp = tcp_sk(sk);
         struct yeah *yeah = inet_csk_ca(sk);