Commit | Line | Data |
---|---|---|
9e9695c7 | 1 | /* raw_cb.c 4.17 83/05/27 */ |
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" | |
f4d55810 SL |
8 | #include "../h/errno.h" |
9 | ||
785d93ac BJ |
10 | #include "../net/if.h" |
11 | #include "../net/raw_cb.h" | |
9e9695c7 SL |
12 | #include "../netinet/in.h" |
13 | #include "../netpup/pup.h" | |
f4d55810 SL |
14 | |
15 | #include "../vax/mtpr.h" | |
785d93ac BJ |
16 | |
17 | /* | |
18 | * Routines to manage the raw protocol control blocks. | |
19 | * | |
20 | * TODO: | |
21 | * hash lookups by protocol family/protocol + address family | |
ee787340 | 22 | * take care of unique address problems per AF? |
1e25d807 | 23 | * redo address binding to allow wildcards |
785d93ac BJ |
24 | */ |
25 | ||
26 | /* | |
27 | * Allocate a control block and a nominal amount | |
28 | * of buffer space for the socket. | |
29 | */ | |
14fa60f2 | 30 | raw_attach(so) |
785d93ac | 31 | register struct socket *so; |
785d93ac BJ |
32 | { |
33 | struct mbuf *m; | |
34 | register struct rawcb *rp; | |
785d93ac | 35 | |
cce93e4b | 36 | m = m_getclr(M_DONTWAIT, MT_PCB); |
785d93ac BJ |
37 | if (m == 0) |
38 | return (ENOBUFS); | |
39 | if (sbreserve(&so->so_snd, RAWSNDQ) == 0) | |
40 | goto bad; | |
41 | if (sbreserve(&so->so_rcv, RAWRCVQ) == 0) | |
42 | goto bad2; | |
43 | rp = mtod(m, struct rawcb *); | |
44 | rp->rcb_socket = so; | |
45 | insque(rp, &rawcb); | |
46 | so->so_pcb = (caddr_t)rp; | |
47 | rp->rcb_pcb = 0; | |
785d93ac BJ |
48 | return (0); |
49 | bad2: | |
50 | sbrelease(&so->so_snd); | |
51 | bad: | |
52 | (void) m_free(m); | |
53 | return (ENOBUFS); | |
54 | } | |
55 | ||
56 | /* | |
57 | * Detach the raw connection block and discard | |
58 | * socket resources. | |
59 | */ | |
60 | raw_detach(rp) | |
61 | register struct rawcb *rp; | |
62 | { | |
63 | struct socket *so = rp->rcb_socket; | |
64 | ||
785d93ac BJ |
65 | so->so_pcb = 0; |
66 | sofree(so); | |
67 | remque(rp); | |
4053be18 | 68 | m_freem(dtom(rp)); |
785d93ac BJ |
69 | } |
70 | ||
71 | /* | |
72 | * Disconnect and possibly release resources. | |
73 | */ | |
74 | raw_disconnect(rp) | |
75 | struct rawcb *rp; | |
76 | { | |
4053be18 | 77 | |
126472ab | 78 | rp->rcb_flags &= ~RAW_FADDR; |
f832270b | 79 | if (rp->rcb_socket->so_state & SS_NOFDREF) |
785d93ac BJ |
80 | raw_detach(rp); |
81 | } | |
82 | ||
14fa60f2 BJ |
83 | raw_bind(so, nam) |
84 | register struct socket *so; | |
85 | struct mbuf *nam; | |
86 | { | |
87 | struct sockaddr *addr = mtod(nam, struct sockaddr *); | |
14fa60f2 BJ |
88 | register struct rawcb *rp; |
89 | ||
90 | if (ifnet == 0) | |
91 | return (EADDRNOTAVAIL); | |
14fa60f2 BJ |
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 | ||
9e9695c7 | 99 | #ifdef INET |
14fa60f2 | 100 | case AF_IMPLINK: |
9e9695c7 | 101 | case AF_INET: { |
14fa60f2 BJ |
102 | if (((struct sockaddr_in *)addr)->sin_addr.s_addr && |
103 | if_ifwithaddr(addr) == 0) | |
104 | return (EADDRNOTAVAIL); | |
105 | break; | |
9e9695c7 SL |
106 | } |
107 | #endif | |
14fa60f2 BJ |
108 | |
109 | #ifdef PUP | |
110 | /* | |
111 | * Curious, we convert PUP address format to internet | |
112 | * to allow us to verify we're asking for an Ethernet | |
113 | * interface. This is wrong, but things are heavily | |
114 | * oriented towards the internet addressing scheme, and | |
115 | * converting internet to PUP would be very expensive. | |
116 | */ | |
117 | case AF_PUP: { | |
14fa60f2 BJ |
118 | struct sockaddr_pup *spup = (struct sockaddr_pup *)addr; |
119 | struct sockaddr_in inpup; | |
120 | ||
af0b24db | 121 | bzero((caddr_t)&inpup, (unsigned)sizeof(inpup)); |
14fa60f2 BJ |
122 | inpup.sin_family = AF_INET; |
123 | inpup.sin_addr.s_net = spup->sp_net; | |
124 | inpup.sin_addr.s_impno = spup->sp_host; | |
125 | if (inpup.sin_addr.s_addr && | |
126 | if_ifwithaddr((struct sockaddr *)&inpup) == 0) | |
127 | return (EADDRNOTAVAIL); | |
128 | break; | |
129 | } | |
130 | #endif | |
131 | ||
132 | default: | |
133 | return (EAFNOSUPPORT); | |
134 | } | |
14fa60f2 | 135 | /* END DUBIOUS */ |
af0b24db | 136 | rp = sotorawcb(so); |
14fa60f2 BJ |
137 | bcopy((caddr_t)addr, (caddr_t)&rp->rcb_laddr, sizeof (*addr)); |
138 | rp->rcb_flags |= RAW_LADDR; | |
139 | return (0); | |
140 | } | |
141 | ||
785d93ac BJ |
142 | /* |
143 | * Associate a peer's address with a | |
144 | * raw connection block. | |
145 | */ | |
14fa60f2 | 146 | raw_connaddr(rp, nam) |
785d93ac | 147 | struct rawcb *rp; |
14fa60f2 | 148 | struct mbuf *nam; |
785d93ac | 149 | { |
14fa60f2 BJ |
150 | struct sockaddr *addr = mtod(nam, struct sockaddr *); |
151 | ||
126472ab SL |
152 | bcopy((caddr_t)addr, (caddr_t)&rp->rcb_faddr, sizeof(*addr)); |
153 | rp->rcb_flags |= RAW_FADDR; | |
785d93ac | 154 | } |