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30 * @(#)raw_cb.c 8.1 (Berkeley) 6/10/93
34 #include <sys/param.h>
35 #include <sys/domain.h>
37 #include <sys/kernel.h>
38 #include <sys/malloc.h>
39 #include <sys/mutex.h>
40 #include <sys/protosw.h>
41 #include <sys/socket.h>
42 #include <sys/socketvar.h>
43 #include <sys/sysctl.h>
44 #include <sys/systm.h>
46 #include <net/raw_cb.h>
49 * Routines to manage the raw protocol control blocks.
52 * hash lookups by protocol family/protocol + address family
53 * take care of unique address problems per AF?
54 * redo address binding to allow wildcards
58 struct rawcb_list_head rawcb_list;
60 SYSCTL_NODE(_net, OID_AUTO, raw, CTLFLAG_RW, 0, "Raw socket infrastructure");
62 static u_long raw_sendspace = RAWSNDQ;
63 SYSCTL_ULONG(_net_raw, OID_AUTO, sendspace, CTLFLAG_RW, &raw_sendspace, 0,
64 "Default raw socket send space");
66 static u_long raw_recvspace = RAWRCVQ;
67 SYSCTL_ULONG(_net_raw, OID_AUTO, recvspace, CTLFLAG_RW, &raw_recvspace, 0,
68 "Default raw socket receive space");
71 * Allocate a control block and a nominal amount of buffer space for the
75 raw_attach(struct socket *so, int proto)
77 struct rawcb *rp = sotorawcb(so);
81 * It is assumed that raw_attach is called after space has been
82 * allocated for the rawcb; consumer protocols may simply allocate
83 * type struct rawcb, or a wrapper data structure that begins with a
86 KASSERT(rp != NULL, ("raw_attach: rp == NULL"));
88 error = soreserve(so, raw_sendspace, raw_recvspace);
92 rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family;
93 rp->rcb_proto.sp_protocol = proto;
95 LIST_INSERT_HEAD(&rawcb_list, rp, list);
96 mtx_unlock(&rawcb_mtx);
101 * Detach the raw connection block and discard socket resources.
104 raw_detach(struct rawcb *rp)
106 struct socket *so = rp->rcb_socket;
108 KASSERT(so->so_pcb == rp, ("raw_detach: so_pcb != rp"));
111 mtx_lock(&rawcb_mtx);
112 LIST_REMOVE(rp, list);
113 mtx_unlock(&rawcb_mtx);
114 free((caddr_t)(rp), M_PCB);