mirror of
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.
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/*
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* Copyright (C) 2013 Nikos Mavrogiannopoulos
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*
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* This file is part of ocserv.
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*
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* ocserv is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* ocserv 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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* General Public License for more details.
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*
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* You should have received a copy of the GNU 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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#include <config.h>
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#include <vpn.h>
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#include <worker.h>
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#include <worker-bandwidth.h>
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#include <gettime.h>
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#include <stdio.h>
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int _bandwidth_update(bandwidth_st* b, size_t bytes, struct timespec *now)
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{
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size_t sum;
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ssize_t t, remain;
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unsigned int diff;
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size_t transferred_kb;
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diff = timespec_sub_ms(now, &b->count_start);
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if (diff >= COUNT_UPDATE_MS) {
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transferred_kb = b->transferred_bytes / 1000;
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transferred_kb = (transferred_kb*COUNT_UPDATE_MS)/diff;
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memcpy(&b->count_start, now, sizeof(*now));
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remain = b->allowed_kb - transferred_kb;
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t = b->allowed_kb_per_count + remain;
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b->allowed_kb = MIN(t, b->kb_per_sec);
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b->transferred_bytes = bytes;
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return 1;
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}
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sum = b->transferred_bytes + bytes;
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if (sum > b->allowed_kb*1000)
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return 0; /* NO */
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b->transferred_bytes = sum;
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return 1;
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}
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