24b9bb5614
debugging TCP connections. This commit provides a mechanism to free those mbufs when the system is under memory pressure. Because this will result in lost debugging information, the behavior is controllable by a sysctl. The default setting is to free the mbufs. Reviewed by: gnn Approved by: re (gjb) Differential Revision: https://reviews.freebsd.org/D6931 Input from: novice_techie.com
42 lines
1.8 KiB
C
42 lines
1.8 KiB
C
/*-
|
|
* Copyright (c) 2015
|
|
* Jonathan Looney. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _NETINET_TCP_PCAP_H_
|
|
#define _NETINET_TCP_PCAP_H_
|
|
|
|
void tcp_pcap_init(void);
|
|
void tcp_pcap_add(struct tcphdr *th, struct mbuf *m, struct mbufq *queue);
|
|
void tcp_pcap_drain(struct mbufq *queue);
|
|
void tcp_pcap_tcpcb_init(struct tcpcb *tp);
|
|
void tcp_pcap_set_sock_max(struct mbufq *queue, int newval);
|
|
int tcp_pcap_get_sock_max(struct mbufq *queue);
|
|
|
|
extern int tcp_pcap_aggressive_free;
|
|
|
|
#endif /* _NETINET_TCP_PCAP_H_ */
|