2 * Copyright (c) 2003, 2004 Jeffrey M. Hsu. All rights reserved.
3 * Copyright (c) 2003, 2004 The DragonFly Project. All rights reserved.
5 * This code is derived from software contributed to The DragonFly Project
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66 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93
67 * $FreeBSD: src/sys/netinet/udp_var.h,v 1.22.2.1 2001/02/18 07:12:25 luigi Exp $
68 * $DragonFly: src/sys/netinet/udp_var.h,v 1.19 2008/11/11 10:46:58 sephe Exp $
71 #ifndef _NETINET_UDP_VAR_H_
72 #define _NETINET_UDP_VAR_H_
74 #ifndef _NETINET_IP_VAR_H_
75 #include <netinet/ip_var.h>
77 #ifndef _NETINET_UDP_H_
78 #include <netinet/udp.h>
82 * UDP kernel structures and variables.
85 struct ipovly ui_i; /* overlaid ip structure */
86 struct udphdr ui_u; /* udp header */
88 #define ui_x1 ui_i.ih_x1
89 #define ui_pr ui_i.ih_pr
90 #define ui_len ui_i.ih_len
91 #define ui_src ui_i.ih_src
92 #define ui_dst ui_i.ih_dst
93 #define ui_sport ui_u.uh_sport
94 #define ui_dport ui_u.uh_dport
95 #define ui_ulen ui_u.uh_ulen
96 #define ui_sum ui_u.uh_sum
101 * NOTE: Make sure this struct's size is multiple cache line size.
104 /* input statistics: */
105 u_long udps_ipackets; /* total input packets */
106 u_long udps_hdrops; /* packet shorter than header */
107 u_long udps_badsum; /* checksum error */
108 u_long udps_nosum; /* no checksum */
109 u_long udps_badlen; /* data length larger than packet */
110 u_long udps_noport; /* no socket on port */
111 u_long udps_noportbcast; /* of above, arrived as broadcast */
112 u_long udps_fullsock; /* not delivered, input socket full */
113 u_long udpps_pcbcachemiss; /* input packets missing pcb cache */
114 u_long udpps_pcbhashmiss; /* input packets not for hashed pcb */
115 /* output statistics: */
116 u_long udps_opackets; /* total output packets */
117 u_long udps_fastout; /* output packets on fast path */
118 /* of no socket on port, arrived as multicast */
119 u_long udps_noportmcast;
120 u_long udps_pad[3]; /* pad to cache line size (64B) */
124 * Names for UDP sysctl objects
126 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
127 #define UDPCTL_STATS 2 /* statistics (read-only) */
128 #define UDPCTL_MAXDGRAM 3 /* max datagram size */
129 #define UDPCTL_RECVSPACE 4 /* default receive buffer space */
130 #define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */
131 #define UDPCTL_MAXID 6
133 #define UDPCTL_NAMES { \
135 { "checksum", CTLTYPE_INT }, \
136 { "stats", CTLTYPE_STRUCT }, \
137 { "maxdgram", CTLTYPE_INT }, \
138 { "recvspace", CTLTYPE_INT }, \
139 { "pcblist", CTLTYPE_STRUCT }, \
144 SYSCTL_DECL(_net_inet_udp);
147 #define udp_stat udpstat_percpu[mycpuid]
149 extern struct pr_usrreqs udp_usrreqs;
150 extern struct inpcbinfo udbinfo;
151 extern u_long udp_sendspace;
152 extern u_long udp_recvspace;
153 extern struct udpstat udpstat_percpu[MAXCPU];
154 extern int log_in_vain;
156 int udp_addrcpu (in_addr_t faddr, in_port_t fport,
157 in_addr_t laddr, in_port_t lport);
158 int udp_addrcpu_pkt (in_addr_t faddr, in_port_t fport,
159 in_addr_t laddr, in_port_t lport);
160 struct lwkt_port *udp_addrport (in_addr_t faddr, in_port_t fport,
161 in_addr_t laddr, in_port_t lport);
162 void udp_ctlinput(netmsg_t msg);
163 void udp_init (void);
164 void udp_thread_init (void);
165 int udp_input (struct mbuf **, int *, int);
166 void udp_notify (struct inpcb *inp, int error);
167 void udp_shutdown (union netmsg *);
168 struct lwkt_port *udp_ctlport (int, struct sockaddr *, void *);
169 struct lwkt_port *udp_cport (int);
171 void udbinfo_lock(void);
172 void udbinfo_unlock(void);
173 void udbinfo_barrier_set(void);
174 void udbinfo_barrier_rem(void);