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Fix MTU detection (Fix #303) (#304)

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Till Müller 2020-09-06 15:17:33 +02:00 • committed by GitHub
commit 8511a74c10
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1 changed files with 15 additions and 12 deletions
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27
lib/src/senkusha.c
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@ -363,7 +363,7 @@ static ChiakiErrorCode senkusha_run_mtu_in_test(ChiakiSenkusha *senkusha, uint32
uint32_t cur = max;
uint32_t request_id = 0;
while(max > min)
while((max - min) > 1)
{
bool success = false;
for(uint32_t attempt=0; attempt<retries; attempt++)
@ -410,14 +410,14 @@ static ChiakiErrorCode senkusha_run_mtu_in_test(ChiakiSenkusha *senkusha, uint32
}
if(success)
min = cur + 1;
min = cur;
else
max = cur - 1;
max = cur;
cur = min + (max - min) / 2;
}
CHIAKI_LOGI(senkusha->log, "Senkusha determined inbound MTU %u", (unsigned int)max);
*mtu = max;
CHIAKI_LOGI(senkusha->log, "Senkusha determined inbound MTU %u", (unsigned int)min);
*mtu = min;
return CHIAKI_ERR_SUCCESS;
}
@ -481,7 +481,7 @@ static ChiakiErrorCode senkusha_run_mtu_out_test(ChiakiSenkusha *senkusha, uint3
err = CHIAKI_ERR_SUCCESS;
uint32_t cur = mtu_in;
while(max > min)
while((max - min) > 1)
{
bool success = false;
for(uint32_t attempt=0; attempt<retries; attempt++)
@ -520,10 +520,13 @@ static ChiakiErrorCode senkusha_run_mtu_out_test(ChiakiSenkusha *senkusha, uint3
if(err != CHIAKI_ERR_SUCCESS)
{
CHIAKI_LOGE(senkusha->log, "Senkusha failed to send ping");
goto beach;
err = CHIAKI_ERR_TIMEOUT;
}
else
{
err = chiaki_cond_timedwait_pred(&senkusha->state_cond, &senkusha->state_mutex, timeout_ms, state_finished_cond_check, senkusha);
}
err = chiaki_cond_timedwait_pred(&senkusha->state_cond, &senkusha->state_mutex, timeout_ms, state_finished_cond_check, senkusha);
assert(err == CHIAKI_ERR_SUCCESS || err == CHIAKI_ERR_TIMEOUT);
if(!senkusha->state_finished)
@ -549,14 +552,14 @@ static ChiakiErrorCode senkusha_run_mtu_out_test(ChiakiSenkusha *senkusha, uint3
}
if(success)
min = cur + 1;
min = cur;
else
max = cur - 1;
max = cur;
cur = min + (max - min) / 2;
}
CHIAKI_LOGI(senkusha->log, "Senkusha determined outbound MTU %u", (unsigned int)max);
*mtu = max;
CHIAKI_LOGI(senkusha->log, "Senkusha determined outbound MTU %u", (unsigned int)min);
*mtu = min;
CHIAKI_LOGI(senkusha->log, "Senkusha sending final Client MTU Command");
client_mtu_cmd.id = 2;