#include <sys/queue.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/eventhandler.h>
#include <machine/atomic.h>
#include <netinet/tcp_var.h>
#include <netinet/tcp_pcap.h>

Include dependency graph for tcp_pcap.c:

Macros
#define	M_LEADINGSPACE_NOWRITE(m) ((m)->m_data - M_START(m))

#define	V_tcp_pcap_packets VNET(tcp_pcap_packets)

Functions
	SYSCTL_INT (_net_inet_tcp, OID_AUTO, tcp_pcap_aggressive_free, CTLFLAG_RW, &tcp_pcap_aggressive_free, 0, "Free saved packets when the memory system comes under pressure")

	SYSCTL_INT (_net_inet_tcp, OID_AUTO, tcp_pcap_clusters_referenced_cur, CTLFLAG_RD, &tcp_pcap_clusters_referenced_cur, 0, "Number of clusters currently referenced on TCP PCAP queues")

	SYSCTL_INT (_net_inet_tcp, OID_AUTO, tcp_pcap_clusters_referenced_max, CTLFLAG_RW, &tcp_pcap_clusters_referenced_max, 0, "Maximum number of clusters allowed to be referenced on TCP PCAP " "queues")

	SYSCTL_INT (_net_inet_tcp, OID_AUTO, tcp_pcap_alloc_reuse_ext, CTLFLAG_RD, &tcp_pcap_alloc_reuse_ext, 0, "Number of mbufs with external storage reused for the TCP PCAP " "functionality")

	SYSCTL_INT (_net_inet_tcp, OID_AUTO, tcp_pcap_alloc_reuse_mbuf, CTLFLAG_RD, &tcp_pcap_alloc_reuse_mbuf, 0, "Number of mbufs with internal storage reused for the TCP PCAP " "functionality")

	SYSCTL_INT (_net_inet_tcp, OID_AUTO, tcp_pcap_alloc_new_mbuf, CTLFLAG_RD, &tcp_pcap_alloc_new_mbuf, 0, "Number of new mbufs allocated for the TCP PCAP functionality")

	VNET_DEFINE (int, tcp_pcap_packets)=0

	SYSCTL_INT (_net_inet_tcp, OID_AUTO, tcp_pcap_packets, CTLFLAG_RW, &VNET_NAME(tcp_pcap_packets), 0, "Default number of packets saved per direction per TCPCB")

static void	tcp_pcap_max_set (void)

void	tcp_pcap_init (void)

static __inline bool	tcp_pcap_take_cluster_reference (void)

static __inline void	tcp_pcap_adj_cluster_reference (struct mbuf *m, int adj)

static void	tcp_pcap_m_freem (struct mbuf *mb)

static void	tcp_pcap_copy_bestfit (struct tcphdr th, struct mbuf m, struct mbuf *n)

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)

Variables
int	tcp_pcap_aggressive_free = 1

static int	tcp_pcap_clusters_referenced_cur = 0

static int	tcp_pcap_clusters_referenced_max = 0

static int	tcp_pcap_alloc_reuse_ext = 0

static int	tcp_pcap_alloc_reuse_mbuf = 0

static int	tcp_pcap_alloc_new_mbuf = 0

Macro Definition Documentation

◆ M_LEADINGSPACE_NOWRITE

#define M_LEADINGSPACE_NOWRITE ( m ) ((m)->m_data - M_START(m))

Definition at line 42 of file tcp_pcap.c.

◆ V_tcp_pcap_packets

#define V_tcp_pcap_packets VNET(tcp_pcap_packets)

Definition at line 76 of file tcp_pcap.c.

Function Documentation

◆ SYSCTL_INT() [1/7]

SYSCTL_INT	(	_net_inet_tcp	,
		OID_AUTO	,
		tcp_pcap_aggressive_free	,
		CTLFLAG_RW	,
		&	tcp_pcap_aggressive_free,
		0	,
		"Free saved packets when the memory system comes under pressure"
	)

◆ SYSCTL_INT() [2/7]

SYSCTL_INT	(	_net_inet_tcp	,
		OID_AUTO	,
		tcp_pcap_alloc_new_mbuf	,
		CTLFLAG_RD	,
		&	tcp_pcap_alloc_new_mbuf,
		0	,
		"Number of new mbufs allocated for the TCP PCAP functionality"
	)

◆ SYSCTL_INT() [3/7]

SYSCTL_INT	(	_net_inet_tcp	,
		OID_AUTO	,
		tcp_pcap_alloc_reuse_ext	,
		CTLFLAG_RD	,
		&	tcp_pcap_alloc_reuse_ext,
		0	,
		"Number of mbufs with external storage reused for the TCP PCAP " "functionality"
	)

◆ SYSCTL_INT() [4/7]

SYSCTL_INT	(	_net_inet_tcp	,
		OID_AUTO	,
		tcp_pcap_alloc_reuse_mbuf	,
		CTLFLAG_RD	,
		&	tcp_pcap_alloc_reuse_mbuf,
		0	,
		"Number of mbufs with internal storage reused for the TCP PCAP " "functionality"
	)

◆ SYSCTL_INT() [5/7]

SYSCTL_INT	(	_net_inet_tcp	,
		OID_AUTO	,
		tcp_pcap_clusters_referenced_cur	,
		CTLFLAG_RD	,
		&	tcp_pcap_clusters_referenced_cur,
		0	,
		"Number of clusters currently referenced on TCP PCAP queues"
	)

◆ SYSCTL_INT() [6/7]

SYSCTL_INT	(	_net_inet_tcp	,
		OID_AUTO	,
		tcp_pcap_clusters_referenced_max	,
		CTLFLAG_RW	,
		&	tcp_pcap_clusters_referenced_max,
		0	,
		"Maximum number of clusters allowed to be referenced on TCP PCAP " "queues"
	)

◆ SYSCTL_INT() [7/7]

SYSCTL_INT	(	_net_inet_tcp	,
		OID_AUTO	,
		tcp_pcap_packets	,
		CTLFLAG_RW	,
		&	VNET_NAMEtcp_pcap_packets,
		0	,
		"Default number of packets saved per direction per TCPCB"
	)