summaryrefslogtreecommitdiff
path: root/net
diff options
context:
space:
mode:
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/tcp_bic.c11
-rw-r--r--net/ipv4/tcp_cong.c5
-rw-r--r--net/ipv4/tcp_cubic.c18
-rw-r--r--net/ipv4/tcp_diag.c5
-rw-r--r--net/ipv4/tcp_highspeed.c145
-rw-r--r--net/ipv4/tcp_htcp.c6
-rw-r--r--net/ipv4/tcp_hybla.c1
-rw-r--r--net/ipv4/tcp_illinois.c3
-rw-r--r--net/ipv4/tcp_ipv4.c5
-rw-r--r--net/ipv4/tcp_probe.c6
-rw-r--r--net/ipv4/tcp_scalable.c2
-rw-r--r--net/ipv4/tcp_vegas.c3
-rw-r--r--net/ipv4/tcp_veno.c1
-rw-r--r--net/ipv4/tcp_westwood.c7
-rw-r--r--net/ipv4/tcp_yeah.c9
15 files changed, 104 insertions, 123 deletions
diff --git a/net/ipv4/tcp_bic.c b/net/ipv4/tcp_bic.c
index d5de69bc04f5..bb395d46a389 100644
--- a/net/ipv4/tcp_bic.c
+++ b/net/ipv4/tcp_bic.c
@@ -17,7 +17,6 @@
#include <linux/module.h>
#include <net/tcp.h>
-
#define BICTCP_BETA_SCALE 1024 /* Scale factor beta calculation
* max_cwnd = snd_cwnd * beta
*/
@@ -46,11 +45,10 @@ MODULE_PARM_DESC(initial_ssthresh, "initial value of slow start threshold");
module_param(smooth_part, int, 0644);
MODULE_PARM_DESC(smooth_part, "log(B/(B*Smin))/log(B/(B-1))+B, # of RTT from Wmax-B to Wmax");
-
/* BIC TCP Parameters */
struct bictcp {
u32 cnt; /* increase cwnd by 1 after ACKs */
- u32 last_max_cwnd; /* last maximum snd_cwnd */
+ u32 last_max_cwnd; /* last maximum snd_cwnd */
u32 loss_cwnd; /* congestion window at last loss */
u32 last_cwnd; /* the last snd_cwnd */
u32 last_time; /* time when updated last_cwnd */
@@ -103,7 +101,7 @@ static inline void bictcp_update(struct bictcp *ca, u32 cwnd)
/* binary increase */
if (cwnd < ca->last_max_cwnd) {
- __u32 dist = (ca->last_max_cwnd - cwnd)
+ __u32 dist = (ca->last_max_cwnd - cwnd)
/ BICTCP_B;
if (dist > max_increment)
@@ -154,7 +152,6 @@ static void bictcp_cong_avoid(struct sock *sk, u32 ack, u32 acked)
bictcp_update(ca, tp->snd_cwnd);
tcp_cong_avoid_ai(tp, ca->cnt);
}
-
}
/*
@@ -177,7 +174,6 @@ static u32 bictcp_recalc_ssthresh(struct sock *sk)
ca->loss_cwnd = tp->snd_cwnd;
-
if (tp->snd_cwnd <= low_window)
return max(tp->snd_cwnd >> 1U, 2U);
else
@@ -188,6 +184,7 @@ static u32 bictcp_undo_cwnd(struct sock *sk)
{
const struct tcp_sock *tp = tcp_sk(sk);
const struct bictcp *ca = inet_csk_ca(sk);
+
return max(tp->snd_cwnd, ca->loss_cwnd);
}
@@ -206,12 +203,12 @@ static void bictcp_acked(struct sock *sk, u32 cnt, s32 rtt)
if (icsk->icsk_ca_state == TCP_CA_Open) {
struct bictcp *ca = inet_csk_ca(sk);
+
cnt -= ca->delayed_ack >> ACK_RATIO_SHIFT;
ca->delayed_ack += cnt;
}
}
-
static struct tcp_congestion_ops bictcp __read_mostly = {
.init = bictcp_init,
.ssthresh = bictcp_recalc_ssthresh,
diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c
index 7b09d8b49fa5..80248f56c89f 100644
--- a/net/ipv4/tcp_cong.c
+++ b/net/ipv4/tcp_cong.c
@@ -142,7 +142,6 @@ static int __init tcp_congestion_default(void)
}
late_initcall(tcp_congestion_default);
-
/* Build string with list of available congestion control values */
void tcp_get_available_congestion_control(char *buf, size_t maxlen)
{
@@ -154,7 +153,6 @@ void tcp_get_available_congestion_control(char *buf, size_t maxlen)
offs += snprintf(buf + offs, maxlen - offs,
"%s%s",
offs == 0 ? "" : " ", ca->name);
-
}
rcu_read_unlock();
}
@@ -186,7 +184,6 @@ void tcp_get_allowed_congestion_control(char *buf, size_t maxlen)
offs += snprintf(buf + offs, maxlen - offs,
"%s%s",
offs == 0 ? "" : " ", ca->name);
-
}
rcu_read_unlock();
}
@@ -230,7 +227,6 @@ out:
return ret;
}
-
/* Change congestion control for socket */
int tcp_set_congestion_control(struct sock *sk, const char *name)
{
@@ -337,6 +333,7 @@ EXPORT_SYMBOL_GPL(tcp_reno_cong_avoid);
u32 tcp_reno_ssthresh(struct sock *sk)
{
const struct tcp_sock *tp = tcp_sk(sk);
+
return max(tp->snd_cwnd >> 1U, 2U);
}
EXPORT_SYMBOL_GPL(tcp_reno_ssthresh);
diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c
index a9bd8a4828a9..20de0118c98e 100644
--- a/net/ipv4/tcp_cubic.c
+++ b/net/ipv4/tcp_cubic.c
@@ -82,12 +82,13 @@ MODULE_PARM_DESC(hystart_ack_delta, "spacing between ack's indicating train (mse
/* BIC TCP Parameters */
struct bictcp {
u32 cnt; /* increase cwnd by 1 after ACKs */
- u32 last_max_cwnd; /* last maximum snd_cwnd */
+ u32 last_max_cwnd; /* last maximum snd_cwnd */
u32 loss_cwnd; /* congestion window at last loss */
u32 last_cwnd; /* the last snd_cwnd */
u32 last_time; /* time when updated last_cwnd */
u32 bic_origin_point;/* origin point of bic function */
- u32 bic_K; /* time to origin point from the beginning of the current epoch */
+ u32 bic_K; /* time to origin point
+ from the beginning of the current epoch */
u32 delay_min; /* min delay (msec << 3) */
u32 epoch_start; /* beginning of an epoch */
u32 ack_cnt; /* number of acks */
@@ -219,7 +220,7 @@ static inline void bictcp_update(struct bictcp *ca, u32 cwnd)
ca->last_time = tcp_time_stamp;
if (ca->epoch_start == 0) {
- ca->epoch_start = tcp_time_stamp; /* record the beginning of an epoch */
+ ca->epoch_start = tcp_time_stamp; /* record beginning */
ca->ack_cnt = 1; /* start counting */
ca->tcp_cwnd = cwnd; /* syn with cubic */
@@ -263,9 +264,9 @@ static inline void bictcp_update(struct bictcp *ca, u32 cwnd)
/* c/rtt * (t-K)^3 */
delta = (cube_rtt_scale * offs * offs * offs) >> (10+3*BICTCP_HZ);
- if (t < ca->bic_K) /* below origin*/
+ if (t < ca->bic_K) /* below origin*/
bic_target = ca->bic_origin_point - delta;
- else /* above origin*/
+ else /* above origin*/
bic_target = ca->bic_origin_point + delta;
/* cubic function - calc bictcp_cnt*/
@@ -285,13 +286,14 @@ static inline void bictcp_update(struct bictcp *ca, u32 cwnd)
/* TCP Friendly */
if (tcp_friendliness) {
u32 scale = beta_scale;
+
delta = (cwnd * scale) >> 3;
while (ca->ack_cnt > delta) { /* update tcp cwnd */
ca->ack_cnt -= delta;
ca->tcp_cwnd++;
}
- if (ca->tcp_cwnd > cwnd){ /* if bic is slower than tcp */
+ if (ca->tcp_cwnd > cwnd) { /* if bic is slower than tcp */
delta = ca->tcp_cwnd - cwnd;
max_cnt = cwnd / delta;
if (ca->cnt > max_cnt)
@@ -320,7 +322,6 @@ static void bictcp_cong_avoid(struct sock *sk, u32 ack, u32 acked)
bictcp_update(ca, tp->snd_cwnd);
tcp_cong_avoid_ai(tp, ca->cnt);
}
-
}
static u32 bictcp_recalc_ssthresh(struct sock *sk)
@@ -452,7 +453,8 @@ static int __init cubictcp_register(void)
* based on SRTT of 100ms
*/
- beta_scale = 8*(BICTCP_BETA_SCALE+beta)/ 3 / (BICTCP_BETA_SCALE - beta);
+ beta_scale = 8*(BICTCP_BETA_SCALE+beta) / 3
+ / (BICTCP_BETA_SCALE - beta);
cube_rtt_scale = (bic_scale * 10); /* 1024*c/rtt */
diff --git a/net/ipv4/tcp_diag.c b/net/ipv4/tcp_diag.c
index ed3f2ad42e0f..0d73f9ddb55b 100644
--- a/net/ipv4/tcp_diag.c
+++ b/net/ipv4/tcp_diag.c
@@ -9,7 +9,6 @@
* 2 of the License, or (at your option) any later version.
*/
-
#include <linux/module.h>
#include <linux/inet_diag.h>
@@ -35,13 +34,13 @@ static void tcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
}
static void tcp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
- struct inet_diag_req_v2 *r, struct nlattr *bc)
+ struct inet_diag_req_v2 *r, struct nlattr *bc)
{
inet_diag_dump_icsk(&tcp_hashinfo, skb, cb, r, bc);
}
static int tcp_diag_dump_one(struct sk_buff *in_skb, const struct nlmsghdr *nlh,
- struct inet_diag_req_v2 *req)
+ struct inet_diag_req_v2 *req)
{
return inet_diag_dump_one_icsk(&tcp_hashinfo, in_skb, nlh, req);
}
diff --git a/net/ipv4/tcp_highspeed.c b/net/ipv4/tcp_highspeed.c
index 1c4908280d92..882c08aae2f5 100644
--- a/net/ipv4/tcp_highspeed.c
+++ b/net/ipv4/tcp_highspeed.c
@@ -9,7 +9,6 @@
#include <linux/module.h>
#include <net/tcp.h>
-
/* From AIMD tables from RFC 3649 appendix B,
* with fixed-point MD scaled <<8.
*/
@@ -17,78 +16,78 @@ static const struct hstcp_aimd_val {
unsigned int cwnd;
unsigned int md;
} hstcp_aimd_vals[] = {
- { 38, 128, /* 0.50 */ },
- { 118, 112, /* 0.44 */ },
- { 221, 104, /* 0.41 */ },
- { 347, 98, /* 0.38 */ },
- { 495, 93, /* 0.37 */ },
- { 663, 89, /* 0.35 */ },
- { 851, 86, /* 0.34 */ },
- { 1058, 83, /* 0.33 */ },
- { 1284, 81, /* 0.32 */ },
- { 1529, 78, /* 0.31 */ },
- { 1793, 76, /* 0.30 */ },
- { 2076, 74, /* 0.29 */ },
- { 2378, 72, /* 0.28 */ },
- { 2699, 71, /* 0.28 */ },
- { 3039, 69, /* 0.27 */ },
- { 3399, 68, /* 0.27 */ },
- { 3778, 66, /* 0.26 */ },
- { 4177, 65, /* 0.26 */ },
- { 4596, 64, /* 0.25 */ },
- { 5036, 62, /* 0.25 */ },
- { 5497, 61, /* 0.24 */ },
- { 5979, 60, /* 0.24 */ },
- { 6483, 59, /* 0.23 */ },
- { 7009, 58, /* 0.23 */ },
- { 7558, 57, /* 0.22 */ },
- { 8130, 56, /* 0.22 */ },
- { 8726, 55, /* 0.22 */ },
- { 9346, 54, /* 0.21 */ },
- { 9991, 53, /* 0.21 */ },
- { 10661, 52, /* 0.21 */ },
- { 11358, 52, /* 0.20 */ },
- { 12082, 51, /* 0.20 */ },
- { 12834, 50, /* 0.20 */ },
- { 13614, 49, /* 0.19 */ },
- { 14424, 48, /* 0.19 */ },
- { 15265, 48, /* 0.19 */ },
- { 16137, 47, /* 0.19 */ },
- { 17042, 46, /* 0.18 */ },
- { 17981, 45, /* 0.18 */ },
- { 18955, 45, /* 0.18 */ },
- { 19965, 44, /* 0.17 */ },
- { 21013, 43, /* 0.17 */ },
- { 22101, 43, /* 0.17 */ },
- { 23230, 42, /* 0.17 */ },
- { 24402, 41, /* 0.16 */ },
- { 25618, 41, /* 0.16 */ },
- { 26881, 40, /* 0.16 */ },
- { 28193, 39, /* 0.16 */ },
- { 29557, 39, /* 0.15 */ },
- { 30975, 38, /* 0.15 */ },
- { 32450, 38, /* 0.15 */ },
- { 33986, 37, /* 0.15 */ },
- { 35586, 36, /* 0.14 */ },
- { 37253, 36, /* 0.14 */ },
- { 38992, 35, /* 0.14 */ },
- { 40808, 35, /* 0.14 */ },
- { 42707, 34, /* 0.13 */ },
- { 44694, 33, /* 0.13 */ },
- { 46776, 33, /* 0.13 */ },
- { 48961, 32, /* 0.13 */ },
- { 51258, 32, /* 0.13 */ },
- { 53677, 31, /* 0.12 */ },
- { 56230, 30, /* 0.12 */ },
- { 58932, 30, /* 0.12 */ },
- { 61799, 29, /* 0.12 */ },
- { 64851, 28, /* 0.11 */ },
- { 68113, 28, /* 0.11 */ },
- { 71617, 27, /* 0.11 */ },
- { 75401, 26, /* 0.10 */ },
- { 79517, 26, /* 0.10 */ },
- { 84035, 25, /* 0.10 */ },
- { 89053, 24, /* 0.10 */ },
+ { 38, 128, /* 0.50 */ },
+ { 118, 112, /* 0.44 */ },
+ { 221, 104, /* 0.41 */ },
+ { 347, 98, /* 0.38 */ },
+ { 495, 93, /* 0.37 */ },
+ { 663, 89, /* 0.35 */ },
+ { 851, 86, /* 0.34 */ },
+ { 1058, 83, /* 0.33 */ },
+ { 1284, 81, /* 0.32 */ },
+ { 1529, 78, /* 0.31 */ },
+ { 1793, 76, /* 0.30 */ },
+ { 2076, 74, /* 0.29 */ },
+ { 2378, 72, /* 0.28 */ },
+ { 2699, 71, /* 0.28 */ },
+ { 3039, 69, /* 0.27 */ },
+ { 3399, 68, /* 0.27 */ },
+ { 3778, 66, /* 0.26 */ },
+ { 4177, 65, /* 0.26 */ },
+ { 4596, 64, /* 0.25 */ },
+ { 5036, 62, /* 0.25 */ },
+ { 5497, 61, /* 0.24 */ },
+ { 5979, 60, /* 0.24 */ },
+ { 6483, 59, /* 0.23 */ },
+ { 7009, 58, /* 0.23 */ },
+ { 7558, 57, /* 0.22 */ },
+ { 8130, 56, /* 0.22 */ },
+ { 8726, 55, /* 0.22 */ },
+ { 9346, 54, /* 0.21 */ },
+ { 9991, 53, /* 0.21 */ },
+ { 10661, 52, /* 0.21 */ },
+ { 11358, 52, /* 0.20 */ },
+ { 12082, 51, /* 0.20 */ },
+ { 12834, 50, /* 0.20 */ },
+ { 13614, 49, /* 0.19 */ },
+ { 14424, 48, /* 0.19 */ },
+ { 15265, 48, /* 0.19 */ },
+ { 16137, 47, /* 0.19 */ },
+ { 17042, 46, /* 0.18 */ },
+ { 17981, 45, /* 0.18 */ },
+ { 18955, 45, /* 0.18 */ },
+ { 19965, 44, /* 0.17 */ },
+ { 21013, 43, /* 0.17 */ },
+ { 22101, 43, /* 0.17 */ },
+ { 23230, 42, /* 0.17 */ },
+ { 24402, 41, /* 0.16 */ },
+ { 25618, 41, /* 0.16 */ },
+ { 26881, 40, /* 0.16 */ },
+ { 28193, 39, /* 0.16 */ },
+ { 29557, 39, /* 0.15 */ },
+ { 30975, 38, /* 0.15 */ },
+ { 32450, 38, /* 0.15 */ },
+ { 33986, 37, /* 0.15 */ },
+ { 35586, 36, /* 0.14 */ },
+ { 37253, 36, /* 0.14 */ },
+ { 38992, 35, /* 0.14 */ },
+ { 40808, 35, /* 0.14 */ },
+ { 42707, 34, /* 0.13 */ },
+ { 44694, 33, /* 0.13 */ },
+ { 46776, 33, /* 0.13 */ },
+ { 48961, 32, /* 0.13 */ },
+ { 51258, 32, /* 0.13 */ },
+ { 53677, 31, /* 0.12 */ },
+ { 56230, 30, /* 0.12 */ },
+ { 58932, 30, /* 0.12 */ },
+ { 61799, 29, /* 0.12 */ },
+ { 64851, 28, /* 0.11 */ },
+ { 68113, 28, /* 0.11 */ },
+ { 71617, 27, /* 0.11 */ },
+ { 75401, 26, /* 0.10 */ },
+ { 79517, 26, /* 0.10 */ },
+ { 84035, 25, /* 0.10 */ },
+ { 89053, 24, /* 0.10 */ },
};
#define HSTCP_AIMD_MAX ARRAY_SIZE(hstcp_aimd_vals)
diff --git a/net/ipv4/tcp_htcp.c b/net/ipv4/tcp_htcp.c
index 031361311a8b..58469fff6c18 100644
--- a/net/ipv4/tcp_htcp.c
+++ b/net/ipv4/tcp_htcp.c
@@ -98,7 +98,8 @@ static inline void measure_rtt(struct sock *sk, u32 srtt)
}
}
-static void measure_achieved_throughput(struct sock *sk, u32 pkts_acked, s32 rtt)
+static void measure_achieved_throughput(struct sock *sk,
+ u32 pkts_acked, s32 rtt)
{
const struct inet_connection_sock *icsk = inet_csk(sk);
const struct tcp_sock *tp = tcp_sk(sk);
@@ -148,8 +149,8 @@ static inline void htcp_beta_update(struct htcp *ca, u32 minRTT, u32 maxRTT)
if (use_bandwidth_switch) {
u32 maxB = ca->maxB;
u32 old_maxB = ca->old_maxB;
- ca->old_maxB = ca->maxB;
+ ca->old_maxB = ca->maxB;
if (!between(5 * maxB, 4 * old_maxB, 6 * old_maxB)) {
ca->beta = BETA_MIN;
ca->modeswitch = 0;
@@ -270,6 +271,7 @@ static void htcp_state(struct sock *sk, u8 new_state)
case TCP_CA_Open:
{
struct htcp *ca = inet_csk_ca(sk);
+
if (ca->undo_last_cong) {
ca->last_cong = jiffies;
ca->undo_last_cong = 0;
diff --git a/net/ipv4/tcp_hybla.c b/net/ipv4/tcp_hybla.c
index d8f8f05a4951..f963b274f2b0 100644
--- a/net/ipv4/tcp_hybla.c
+++ b/net/ipv4/tcp_hybla.c
@@ -29,7 +29,6 @@ static int rtt0 = 25;
module_param(rtt0, int, 0644);
MODULE_PARM_DESC(rtt0, "reference rout trip time (ms)");
-
/* This is called to refresh values for hybla parameters */
static inline void hybla_recalc_param (struct sock *sk)
{
diff --git a/net/ipv4/tcp_illinois.c b/net/ipv4/tcp_illinois.c
index 5999b3972e64..1d5a30a90adf 100644
--- a/net/ipv4/tcp_illinois.c
+++ b/net/ipv4/tcp_illinois.c
@@ -284,7 +284,7 @@ static void tcp_illinois_cong_avoid(struct sock *sk, u32 ack, u32 acked)
delta = (tp->snd_cwnd_cnt * ca->alpha) >> ALPHA_SHIFT;
if (delta >= tp->snd_cwnd) {
tp->snd_cwnd = min(tp->snd_cwnd + delta / tp->snd_cwnd,
- (u32) tp->snd_cwnd_clamp);
+ (u32)tp->snd_cwnd_clamp);
tp->snd_cwnd_cnt = 0;
}
}
@@ -299,7 +299,6 @@ static u32 tcp_illinois_ssthresh(struct sock *sk)
return max(tp->snd_cwnd - ((tp->snd_cwnd * ca->beta) >> BETA_SHIFT), 2U);
}
-
/* Extract info for Tcp socket info provided via netlink. */
static void tcp_illinois_info(struct sock *sk, u32 ext,
struct sk_buff *skb)
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index cd17f009aede..487e2a41667f 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -90,7 +90,6 @@ int sysctl_tcp_tw_reuse __read_mostly;
int sysctl_tcp_low_latency __read_mostly;
EXPORT_SYMBOL(sysctl_tcp_low_latency);
-
#ifdef CONFIG_TCP_MD5SIG
static int tcp_v4_md5_hash_hdr(char *md5_hash, const struct tcp_md5sig_key *key,
__be32 daddr, __be32 saddr, const struct tcphdr *th);
@@ -1269,7 +1268,7 @@ struct request_sock_ops tcp_request_sock_ops __read_mostly = {
.send_ack = tcp_v4_reqsk_send_ack,
.destructor = tcp_v4_reqsk_destructor,
.send_reset = tcp_v4_send_reset,
- .syn_ack_timeout = tcp_syn_ack_timeout,
+ .syn_ack_timeout = tcp_syn_ack_timeout,
};
static const struct tcp_request_sock_ops tcp_request_sock_ipv4_ops = {
@@ -2183,7 +2182,7 @@ int tcp_seq_open(struct inode *inode, struct file *file)
s = ((struct seq_file *)file->private_data)->private;
s->family = afinfo->family;
- s->last_pos = 0;
+ s->last_pos = 0;
return 0;
}
EXPORT_SYMBOL(tcp_seq_open);
diff --git a/net/ipv4/tcp_probe.c b/net/ipv4/tcp_probe.c
index 3b66610d4156..ebf5ff57526e 100644
--- a/net/ipv4/tcp_probe.c
+++ b/net/ipv4/tcp_probe.c
@@ -83,7 +83,6 @@ static struct {
struct tcp_log *log;
} tcp_probe;
-
static inline int tcp_probe_used(void)
{
return (tcp_probe.head - tcp_probe.tail) & (bufsize - 1);
@@ -101,7 +100,6 @@ static inline int tcp_probe_avail(void)
si4.sin_addr.s_addr = inet->inet_##mem##addr; \
} while (0) \
-
/*
* Hook inserted to be called before each receive packet.
* Note: arguments must match tcp_rcv_established()!
@@ -194,8 +192,8 @@ static int tcpprobe_sprint(char *tbuf, int n)
return scnprintf(tbuf, n,
"%lu.%09lu %pISpc %pISpc %d %#x %#x %u %u %u %u %u\n",
- (unsigned long) tv.tv_sec,
- (unsigned long) tv.tv_nsec,
+ (unsigned long)tv.tv_sec,
+ (unsigned long)tv.tv_nsec,
&p->src, &p->dst, p->length, p->snd_nxt, p->snd_una,
p->snd_cwnd, p->ssthresh, p->snd_wnd, p->srtt, p->rcv_wnd);
}
diff --git a/net/ipv4/tcp_scalable.c b/net/ipv4/tcp_scalable.c
index 8250949b8853..6824afb65d93 100644
--- a/net/ipv4/tcp_scalable.c
+++ b/net/ipv4/tcp_scalable.c
@@ -31,10 +31,10 @@ static void tcp_scalable_cong_avoid(struct sock *sk, u32 ack, u32 acked)
static u32 tcp_scalable_ssthresh(struct sock *sk)
{
const struct tcp_sock *tp = tcp_sk(sk);
+
return max(tp->snd_cwnd - (tp->snd_cwnd>>TCP_SCALABLE_MD_SCALE), 2U);
}
-
static struct tcp_congestion_ops tcp_scalable __read_mostly = {
.ssthresh = tcp_scalable_ssthresh,
.cong_avoid = tcp_scalable_cong_avoid,
diff --git a/net/ipv4/tcp_vegas.c b/net/ipv4/tcp_vegas.c
index b40ad897f945..a6afde666ab1 100644
--- a/net/ipv4/tcp_vegas.c
+++ b/net/ipv4/tcp_vegas.c
@@ -51,7 +51,6 @@ MODULE_PARM_DESC(beta, "upper bound of packets in network");
module_param(gamma, int, 0644);
MODULE_PARM_DESC(gamma, "limit on increase (scale by 2)");
-
/* There are several situations when we must "re-start" Vegas:
*
* o when a connection is established
@@ -133,7 +132,6 @@ EXPORT_SYMBOL_GPL(tcp_vegas_pkts_acked);
void tcp_vegas_state(struct sock *sk, u8 ca_state)
{
-
if (ca_state == TCP_CA_Open)
vegas_enable(sk);
else
@@ -285,7 +283,6 @@ static void tcp_vegas_cong_avoid(struct sock *sk, u32 ack, u32 acked)
/* Use normal slow start */
else if (tp->snd_cwnd <= tp->snd_ssthresh)
tcp_slow_start(tp, acked);
-
}
/* Extract info for Tcp socket info provided via netlink. */
diff --git a/net/ipv4/tcp_veno.c b/net/ipv4/tcp_veno.c
index 8276977d2c85..a4d2d2d88dca 100644
--- a/net/ipv4/tcp_veno.c
+++ b/net/ipv4/tcp_veno.c
@@ -175,7 +175,6 @@ static void tcp_veno_cong_avoid(struct sock *sk, u32 ack, u32 acked)
} else
tp->snd_cwnd_cnt++;
}
-
}
if (tp->snd_cwnd < 2)
tp->snd_cwnd = 2;
diff --git a/net/ipv4/tcp_westwood.c b/net/ipv4/tcp_westwood.c
index b94a04ae2ed5..81911a92356c 100644
--- a/net/ipv4/tcp_westwood.c
+++ b/net/ipv4/tcp_westwood.c
@@ -42,7 +42,6 @@ struct westwood {
u8 reset_rtt_min; /* Reset RTT min to next RTT sample*/
};
-
/* TCP Westwood functions and constants */
#define TCP_WESTWOOD_RTT_MIN (HZ/20) /* 50ms */
#define TCP_WESTWOOD_INIT_RTT (20*HZ) /* maybe too conservative?! */
@@ -153,7 +152,6 @@ static inline void update_rtt_min(struct westwood *w)
w->rtt_min = min(w->rtt, w->rtt_min);
}
-
/*
* @westwood_fast_bw
* It is called when we are in fast path. In particular it is called when
@@ -208,7 +206,6 @@ static inline u32 westwood_acked_count(struct sock *sk)
return w->cumul_ack;
}
-
/*
* TCP Westwood
* Here limit is evaluated as Bw estimation*RTTmin (for obtaining it
@@ -219,6 +216,7 @@ static u32 tcp_westwood_bw_rttmin(const struct sock *sk)
{
const struct tcp_sock *tp = tcp_sk(sk);
const struct westwood *w = inet_csk_ca(sk);
+
return max_t(u32, (w->bw_est * w->rtt_min) / tp->mss_cache, 2);
}
@@ -254,12 +252,12 @@ static void tcp_westwood_event(struct sock *sk, enum tcp_ca_event event)
}
}
-
/* Extract info for Tcp socket info provided via netlink. */
static void tcp_westwood_info(struct sock *sk, u32 ext,
struct sk_buff *skb)
{
const struct westwood *ca = inet_csk_ca(sk);
+
if (ext & (1 << (INET_DIAG_VEGASINFO - 1))) {
struct tcpvegas_info info = {
.tcpv_enabled = 1,
@@ -271,7 +269,6 @@ static void tcp_westwood_info(struct sock *sk, u32 ext,
}
}
-
static struct tcp_congestion_ops tcp_westwood __read_mostly = {
.init = tcp_westwood_init,
.ssthresh = tcp_reno_ssthresh,
diff --git a/net/ipv4/tcp_yeah.c b/net/ipv4/tcp_yeah.c
index 599b79b8eac0..cd7273218598 100644
--- a/net/ipv4/tcp_yeah.c
+++ b/net/ipv4/tcp_yeah.c
@@ -54,10 +54,8 @@ static void tcp_yeah_init(struct sock *sk)
/* Ensure the MD arithmetic works. This is somewhat pedantic,
* since I don't think we will see a cwnd this large. :) */
tp->snd_cwnd_clamp = min_t(u32, tp->snd_cwnd_clamp, 0xffffffff/128);
-
}
-
static void tcp_yeah_pkts_acked(struct sock *sk, u32 pkts_acked, s32 rtt_us)
{
const struct inet_connection_sock *icsk = inet_csk(sk);
@@ -84,7 +82,7 @@ static void tcp_yeah_cong_avoid(struct sock *sk, u32 ack, u32 acked)
/* Scalable */
tp->snd_cwnd_cnt += yeah->pkts_acked;
- if (tp->snd_cwnd_cnt > min(tp->snd_cwnd, TCP_SCALABLE_AI_CNT)){
+ if (tp->snd_cwnd_cnt > min(tp->snd_cwnd, TCP_SCALABLE_AI_CNT)) {
if (tp->snd_cwnd < tp->snd_cwnd_clamp)
tp->snd_cwnd++;
tp->snd_cwnd_cnt = 0;
@@ -120,7 +118,6 @@ static void tcp_yeah_cong_avoid(struct sock *sk, u32 ack, u32 acked)
*/
if (after(ack, yeah->vegas.beg_snd_nxt)) {
-
/* We do the Vegas calculations only if we got enough RTT
* samples that we can be reasonably sure that we got
* at least one RTT sample that wasn't from a delayed ACK.
@@ -189,7 +186,6 @@ static void tcp_yeah_cong_avoid(struct sock *sk, u32 ack, u32 acked)
}
yeah->lastQ = queue;
-
}
/* Save the extent of the current window so we can use this
@@ -205,7 +201,8 @@ static void tcp_yeah_cong_avoid(struct sock *sk, u32 ack, u32 acked)
}
}
-static u32 tcp_yeah_ssthresh(struct sock *sk) {
+static u32 tcp_yeah_ssthresh(struct sock *sk)
+{
const struct tcp_sock *tp = tcp_sk(sk);
struct yeah *yeah = inet_csk_ca(sk);
u32 reduction;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 02:46:33 +0000