Commit | Line | Data |
---|---|---|
af0b24db | 1 | /* raw_cb.c 4.14 82/11/13 */ |
785d93ac BJ |
2 | |
3 | #include "../h/param.h" | |
4 | #include "../h/systm.h" | |
5 | #include "../h/mbuf.h" | |
6 | #include "../h/socket.h" | |
7 | #include "../h/socketvar.h" | |
4053be18 | 8 | #include "../vax/mtpr.h" |
785d93ac BJ |
9 | #include "../net/if.h" |
10 | #include "../net/raw_cb.h" | |
c47a5909 | 11 | #include <errno.h> |
785d93ac BJ |
12 | |
13 | /* | |
14 | * Routines to manage the raw protocol control blocks. | |
15 | * | |
16 | * TODO: | |
17 | * hash lookups by protocol family/protocol + address family | |
ee787340 | 18 | * take care of unique address problems per AF? |
1e25d807 | 19 | * redo address binding to allow wildcards |
785d93ac BJ |
20 | */ |
21 | ||
22 | /* | |
23 | * Allocate a control block and a nominal amount | |
24 | * of buffer space for the socket. | |
25 | */ | |
14fa60f2 | 26 | raw_attach(so) |
785d93ac | 27 | register struct socket *so; |
785d93ac BJ |
28 | { |
29 | struct mbuf *m; | |
30 | register struct rawcb *rp; | |
785d93ac | 31 | |
785d93ac BJ |
32 | m = m_getclr(M_DONTWAIT); |
33 | if (m == 0) | |
34 | return (ENOBUFS); | |
35 | if (sbreserve(&so->so_snd, RAWSNDQ) == 0) | |
36 | goto bad; | |
37 | if (sbreserve(&so->so_rcv, RAWRCVQ) == 0) | |
38 | goto bad2; | |
39 | rp = mtod(m, struct rawcb *); | |
40 | rp->rcb_socket = so; | |
41 | insque(rp, &rawcb); | |
42 | so->so_pcb = (caddr_t)rp; | |
43 | rp->rcb_pcb = 0; | |
785d93ac BJ |
44 | return (0); |
45 | bad2: | |
46 | sbrelease(&so->so_snd); | |
47 | bad: | |
48 | (void) m_free(m); | |
49 | return (ENOBUFS); | |
50 | } | |
51 | ||
52 | /* | |
53 | * Detach the raw connection block and discard | |
54 | * socket resources. | |
55 | */ | |
56 | raw_detach(rp) | |
57 | register struct rawcb *rp; | |
58 | { | |
59 | struct socket *so = rp->rcb_socket; | |
60 | ||
785d93ac BJ |
61 | so->so_pcb = 0; |
62 | sofree(so); | |
63 | remque(rp); | |
4053be18 | 64 | m_freem(dtom(rp)); |
785d93ac BJ |
65 | } |
66 | ||
67 | /* | |
68 | * Disconnect and possibly release resources. | |
69 | */ | |
70 | raw_disconnect(rp) | |
71 | struct rawcb *rp; | |
72 | { | |
4053be18 | 73 | |
126472ab | 74 | rp->rcb_flags &= ~RAW_FADDR; |
f832270b | 75 | if (rp->rcb_socket->so_state & SS_NOFDREF) |
785d93ac BJ |
76 | raw_detach(rp); |
77 | } | |
78 | ||
14fa60f2 BJ |
79 | raw_bind(so, nam) |
80 | register struct socket *so; | |
81 | struct mbuf *nam; | |
82 | { | |
83 | struct sockaddr *addr = mtod(nam, struct sockaddr *); | |
14fa60f2 BJ |
84 | register struct rawcb *rp; |
85 | ||
86 | if (ifnet == 0) | |
87 | return (EADDRNOTAVAIL); | |
88 | { | |
af0b24db | 89 | #include "../h/domain.h" |
14fa60f2 BJ |
90 | #include "../netinet/in.h" |
91 | #include "../netinet/in_systm.h" | |
92 | /* BEGIN DUBIOUS */ | |
93 | /* | |
94 | * Should we verify address not already in use? | |
95 | * Some say yes, others no. | |
96 | */ | |
97 | switch (addr->sa_family) { | |
98 | ||
99 | case AF_IMPLINK: | |
100 | case AF_INET: | |
101 | if (((struct sockaddr_in *)addr)->sin_addr.s_addr && | |
102 | if_ifwithaddr(addr) == 0) | |
103 | return (EADDRNOTAVAIL); | |
104 | break; | |
105 | ||
106 | #ifdef PUP | |
107 | /* | |
108 | * Curious, we convert PUP address format to internet | |
109 | * to allow us to verify we're asking for an Ethernet | |
110 | * interface. This is wrong, but things are heavily | |
111 | * oriented towards the internet addressing scheme, and | |
112 | * converting internet to PUP would be very expensive. | |
113 | */ | |
114 | case AF_PUP: { | |
115 | #include "../netpup/pup.h" | |
116 | struct sockaddr_pup *spup = (struct sockaddr_pup *)addr; | |
117 | struct sockaddr_in inpup; | |
118 | ||
af0b24db | 119 | bzero((caddr_t)&inpup, (unsigned)sizeof(inpup)); |
14fa60f2 BJ |
120 | inpup.sin_family = AF_INET; |
121 | inpup.sin_addr.s_net = spup->sp_net; | |
122 | inpup.sin_addr.s_impno = spup->sp_host; | |
123 | if (inpup.sin_addr.s_addr && | |
124 | if_ifwithaddr((struct sockaddr *)&inpup) == 0) | |
125 | return (EADDRNOTAVAIL); | |
126 | break; | |
127 | } | |
128 | #endif | |
129 | ||
130 | default: | |
131 | return (EAFNOSUPPORT); | |
132 | } | |
133 | } | |
134 | /* END DUBIOUS */ | |
af0b24db | 135 | rp = sotorawcb(so); |
14fa60f2 BJ |
136 | bcopy((caddr_t)addr, (caddr_t)&rp->rcb_laddr, sizeof (*addr)); |
137 | rp->rcb_flags |= RAW_LADDR; | |
138 | return (0); | |
139 | } | |
140 | ||
785d93ac BJ |
141 | /* |
142 | * Associate a peer's address with a | |
143 | * raw connection block. | |
144 | */ | |
14fa60f2 | 145 | raw_connaddr(rp, nam) |
785d93ac | 146 | struct rawcb *rp; |
14fa60f2 | 147 | struct mbuf *nam; |
785d93ac | 148 | { |
14fa60f2 BJ |
149 | struct sockaddr *addr = mtod(nam, struct sockaddr *); |
150 | ||
126472ab SL |
151 | bcopy((caddr_t)addr, (caddr_t)&rp->rcb_faddr, sizeof(*addr)); |
152 | rp->rcb_flags |= RAW_FADDR; | |
785d93ac | 153 | } |