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https://gitlab.com/openconnect/ocserv.git
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982348df88
Disable MTU discovery when not requested, set the minimum packet size to 1280 for IPv6 and 800 bytes for IPv4. When MTU discovery fails to calculate an MTU over the minimum, it disables itself and ocserv will rely on packet fragmentation. This also enhances DTLS connection detection (due to MTU issues), by setting the DPD packet size to equal to the current data MTU.
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/*
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* Copyright (C) 2013 Nikos Mavrogiannopoulos
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*
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* Author: Nikos Mavrogiannopoulos
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*
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* This file is part of ocserv.
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*
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* The GnuTLS is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#ifndef WORKER_BANDWIDTH_H
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# define WORKER_BANDWIDTH_H
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#include <gettime.h>
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#include <time.h>
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#include <unistd.h>
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#define COUNT_UPDATE_MS 500
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typedef struct bandwidth_st {
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struct timespec count_start;
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size_t transferred_bytes;
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size_t allowed_kb;
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/* only touched once */
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size_t allowed_kb_per_count;
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size_t kb_per_sec;
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} bandwidth_st;
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inline static void bandwidth_init(bandwidth_st* b, size_t kb_per_sec)
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{
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memset(b, 0, sizeof(*b));
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b->kb_per_sec = kb_per_sec;
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b->allowed_kb_per_count = (b->kb_per_sec*COUNT_UPDATE_MS)/1000;
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}
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int _bandwidth_update(bandwidth_st* b, size_t bytes, struct timespec* now);
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/* returns true or false, depending on whether to send
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* the bytes */
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inline static
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int bandwidth_update(bandwidth_st* b, size_t bytes, struct timespec* now)
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{
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/* if bandwidth control is disabled */
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if (b->kb_per_sec == 0)
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return 1;
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return _bandwidth_update(b, bytes, now);
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}
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#endif
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