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authorSergey Ivanushkin <sergey.ivanushkin@enea.com>2019-10-17 10:16:27 +0100
committerFlorin Coras <florin.coras@gmail.com>2019-10-17 15:57:39 +0000
commitc30318da220953610820a2e7cd957da7046eaf4b (patch)
tree68e3a9c3208e39af8cbfe6b643b79b4f579cbb46 /src/vnet/tcp/tcp_newreno.c
parente0fd9ed11fd034d6b8c4195d2673271ba6825af2 (diff)
tcp: Init cwnd from ssthresh.
Set high ssthresh out of the box and make configurable Type: fix Signed-off-by: Sergey Ivanushkin <sergey.ivanushkin@enea.com> Change-Id: Iba1549b4ee55e51468ad0b28ef3d26a85fa9cae0
Diffstat (limited to 'src/vnet/tcp/tcp_newreno.c')
-rw-r--r--src/vnet/tcp/tcp_newreno.c32
1 files changed, 31 insertions, 1 deletions
diff --git a/src/vnet/tcp/tcp_newreno.c b/src/vnet/tcp/tcp_newreno.c
index e9213a2e6d9..69dd2247132 100644
--- a/src/vnet/tcp/tcp_newreno.c
+++ b/src/vnet/tcp/tcp_newreno.c
@@ -15,6 +15,15 @@
#include <vnet/tcp/tcp.h>
+typedef struct nwreno_cfg_
+{
+ u32 ssthresh;
+} newreno_cfg_t;
+
+static newreno_cfg_t newreno_cfg = {
+ .ssthresh = 0x7FFFFFFFU,
+};
+
static void
newreno_congestion (tcp_connection_t * tc)
{
@@ -82,12 +91,33 @@ newreno_rcv_cong_ack (tcp_connection_t * tc, tcp_cc_ack_t ack_type,
static void
newreno_conn_init (tcp_connection_t * tc)
{
- tc->ssthresh = tc->snd_wnd;
+ tc->ssthresh = newreno_cfg.ssthresh;
tc->cwnd = tcp_initial_cwnd (tc);
}
+static uword
+newreno_unformat_config (unformat_input_t * input)
+{
+ u32 ssthresh = 0x7FFFFFFFU;
+
+ if (!input)
+ return 0;
+
+ unformat_skip_white_space (input);
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "ssthresh %u", &ssthresh))
+ newreno_cfg.ssthresh = ssthresh;
+ else
+ return 0;
+ }
+ return 1;
+}
+
const static tcp_cc_algorithm_t tcp_newreno = {
.name = "newreno",
+ .unformat_cfg = newreno_unformat_config,
.congestion = newreno_congestion,
.loss = newreno_loss,
.recovered = newreno_recovered,