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32 * @(#)raw_cb.c 8.1 (Berkeley) 6/10/93
36 #include <sys/param.h>
37 #include <sys/domain.h>
39 #include <sys/kernel.h>
40 #include <sys/malloc.h>
41 #include <sys/mutex.h>
42 #include <sys/protosw.h>
43 #include <sys/socket.h>
44 #include <sys/socketvar.h>
45 #include <sys/sysctl.h>
46 #include <sys/systm.h>
50 #include <net/raw_cb.h>
53 * Routines to manage the raw protocol control blocks.
56 * hash lookups by protocol family/protocol + address family
57 * take care of unique address problems per AF?
58 * redo address binding to allow wildcards
62 VNET_DEFINE(struct rawcb_list_head, rawcb_list);
64 static SYSCTL_NODE(_net, OID_AUTO, raw, CTLFLAG_RW, 0,
65 "Raw socket infrastructure");
67 static u_long raw_sendspace = RAWSNDQ;
68 SYSCTL_ULONG(_net_raw, OID_AUTO, sendspace, CTLFLAG_RW, &raw_sendspace, 0,
69 "Default raw socket send space");
71 static u_long raw_recvspace = RAWRCVQ;
72 SYSCTL_ULONG(_net_raw, OID_AUTO, recvspace, CTLFLAG_RW, &raw_recvspace, 0,
73 "Default raw socket receive space");
76 * Allocate a control block and a nominal amount of buffer space for the
80 raw_attach(struct socket *so, int proto)
82 struct rawcb *rp = sotorawcb(so);
86 * It is assumed that raw_attach is called after space has been
87 * allocated for the rawcb; consumer protocols may simply allocate
88 * type struct rawcb, or a wrapper data structure that begins with a
91 KASSERT(rp != NULL, ("raw_attach: rp == NULL"));
93 error = soreserve(so, raw_sendspace, raw_recvspace);
97 rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family;
98 rp->rcb_proto.sp_protocol = proto;
100 LIST_INSERT_HEAD(&V_rawcb_list, rp, list);
101 mtx_unlock(&rawcb_mtx);
106 * Detach the raw connection block and discard socket resources.
109 raw_detach(struct rawcb *rp)
111 struct socket *so = rp->rcb_socket;
113 KASSERT(so->so_pcb == rp, ("raw_detach: so_pcb != rp"));
116 mtx_lock(&rawcb_mtx);
117 LIST_REMOVE(rp, list);
118 mtx_unlock(&rawcb_mtx);
119 free((caddr_t)(rp), M_PCB);