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https://gitea.osmocom.org/cellular-infrastructure/osmo-upf.git
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73c55eec1d
Freely copying from gtp-load-gen.c, implement GTP flooding in osmo-pfcp-tool scripts. Add dependency liburing. It can be disabled with configure --disable-uring in which case the new 'gtp flood' command only logs an error. This verbosely commented example script serves as a good explanation: contrib/osmo-pfcp-tool-scripts/gtp_flood.vty Related: SYS#6590 Change-Id: I332aa0e2efd55f6e357cde4752a3d8b584db531b
112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
/*
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* (C) 2024 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
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* All Rights Reserved.
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*
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* Author: Neels Janosch Hofmeyr <nhofmeyr@sysmocom.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* This program is free software; you can redistribute it and/or modify
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* it 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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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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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*/
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#include <osmocom/core/socket.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/pfcptool/range.h>
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void range_val_set_int(struct range_val *rv, uint32_t val)
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{
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*rv = (struct range_val){
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.buf = { (uint64_t)val, 0 },
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.size = sizeof(val),
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};
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}
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uint32_t range_val_get_int(const struct range_val *rv)
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{
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return rv->buf[0];
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}
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void range_val_set_addr(struct range_val *rv, const struct osmo_sockaddr *val)
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{
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*rv = (struct range_val){};
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rv->size = osmo_sockaddr_to_octets((void *)rv->buf, sizeof(rv->buf), val);
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#if !OSMO_IS_BIG_ENDIAN
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for (int i = 0; i < rv->size / 2; i++) {
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uint8_t *rvbuf = (void *)rv->buf;
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uint8_t tmp = rvbuf[i];
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rvbuf[i] = rvbuf[rv->size - 1 - i];
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rvbuf[rv->size - 1 - i] = tmp;
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}
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#endif
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}
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void range_val_get_addr(struct osmo_sockaddr *dst, const struct range_val *rv)
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{
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void *buf;
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#if OSMO_IS_BIG_ENDIAN
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buf = rv->buf;
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#else
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int i;
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uint8_t rev[sizeof(rv->buf)];
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uint8_t *val = (void *)rv->buf;
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for (i = 0; i < rv->size; i++)
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rev[i] = val[rv->size - 1 - i];
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buf = rev;
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#endif
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osmo_sockaddr_from_octets(dst, buf, rv->size);
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}
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void range_val_inc(struct range_val *rv)
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{
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uint64_t was = rv->buf[0];
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rv->buf[0]++;
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if (rv->buf[0] < was)
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rv->buf[1]++;
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}
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int range_val_cmp(const struct range_val *a, const struct range_val *b)
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{
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int rc;
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if (a == b)
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return 0;
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if (!a)
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return -1;
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if (!b)
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return 1;
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rc = OSMO_CMP(a->buf[0], b->buf[0]);
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if (rc)
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return rc;
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rc = OSMO_CMP(a->buf[1], b->buf[1]);
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if (rc)
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return rc;
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return OSMO_CMP(a->size, b->size);
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}
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void range_next(struct range *r)
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{
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if (range_val_cmp(&r->next, &r->first) < 0) {
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r->next = r->first;
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return;
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}
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if (range_val_cmp(&r->next, &r->last) >= 0) {
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r->next = r->first;
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r->wrapped = true;
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return;
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}
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range_val_inc(&r->next);
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}
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