Commit | Line | Data |
---|---|---|
20666ad3 | 1 | /* raw_cb.c 6.2 84/08/29 */ |
785d93ac | 2 | |
20666ad3 JB |
3 | #include "param.h" |
4 | #include "systm.h" | |
5 | #include "mbuf.h" | |
6 | #include "socket.h" | |
7 | #include "socketvar.h" | |
8 | #include "errno.h" | |
f4d55810 | 9 | |
20666ad3 JB |
10 | #include "if.h" |
11 | #include "route.h" | |
12 | #include "raw_cb.h" | |
9e9695c7 SL |
13 | #include "../netinet/in.h" |
14 | #include "../netpup/pup.h" | |
f4d55810 SL |
15 | |
16 | #include "../vax/mtpr.h" | |
785d93ac BJ |
17 | |
18 | /* | |
19 | * Routines to manage the raw protocol control blocks. | |
20 | * | |
21 | * TODO: | |
22 | * hash lookups by protocol family/protocol + address family | |
ee787340 | 23 | * take care of unique address problems per AF? |
1e25d807 | 24 | * redo address binding to allow wildcards |
785d93ac BJ |
25 | */ |
26 | ||
27 | /* | |
28 | * Allocate a control block and a nominal amount | |
29 | * of buffer space for the socket. | |
30 | */ | |
14fa60f2 | 31 | raw_attach(so) |
785d93ac | 32 | register struct socket *so; |
785d93ac BJ |
33 | { |
34 | struct mbuf *m; | |
35 | register struct rawcb *rp; | |
785d93ac | 36 | |
cce93e4b | 37 | m = m_getclr(M_DONTWAIT, MT_PCB); |
785d93ac BJ |
38 | if (m == 0) |
39 | return (ENOBUFS); | |
40 | if (sbreserve(&so->so_snd, RAWSNDQ) == 0) | |
41 | goto bad; | |
42 | if (sbreserve(&so->so_rcv, RAWRCVQ) == 0) | |
43 | goto bad2; | |
44 | rp = mtod(m, struct rawcb *); | |
45 | rp->rcb_socket = so; | |
46 | insque(rp, &rawcb); | |
47 | so->so_pcb = (caddr_t)rp; | |
48 | rp->rcb_pcb = 0; | |
785d93ac BJ |
49 | return (0); |
50 | bad2: | |
51 | sbrelease(&so->so_snd); | |
52 | bad: | |
53 | (void) m_free(m); | |
54 | return (ENOBUFS); | |
55 | } | |
56 | ||
57 | /* | |
58 | * Detach the raw connection block and discard | |
59 | * socket resources. | |
60 | */ | |
61 | raw_detach(rp) | |
62 | register struct rawcb *rp; | |
63 | { | |
64 | struct socket *so = rp->rcb_socket; | |
65 | ||
785d93ac BJ |
66 | so->so_pcb = 0; |
67 | sofree(so); | |
68 | remque(rp); | |
4053be18 | 69 | m_freem(dtom(rp)); |
785d93ac BJ |
70 | } |
71 | ||
72 | /* | |
73 | * Disconnect and possibly release resources. | |
74 | */ | |
75 | raw_disconnect(rp) | |
76 | struct rawcb *rp; | |
77 | { | |
4053be18 | 78 | |
126472ab | 79 | rp->rcb_flags &= ~RAW_FADDR; |
f832270b | 80 | if (rp->rcb_socket->so_state & SS_NOFDREF) |
785d93ac BJ |
81 | raw_detach(rp); |
82 | } | |
83 | ||
14fa60f2 BJ |
84 | raw_bind(so, nam) |
85 | register struct socket *so; | |
86 | struct mbuf *nam; | |
87 | { | |
88 | struct sockaddr *addr = mtod(nam, struct sockaddr *); | |
14fa60f2 BJ |
89 | register struct rawcb *rp; |
90 | ||
91 | if (ifnet == 0) | |
92 | return (EADDRNOTAVAIL); | |
14fa60f2 BJ |
93 | /* BEGIN DUBIOUS */ |
94 | /* | |
95 | * Should we verify address not already in use? | |
96 | * Some say yes, others no. | |
97 | */ | |
98 | switch (addr->sa_family) { | |
99 | ||
9e9695c7 | 100 | #ifdef INET |
14fa60f2 | 101 | case AF_IMPLINK: |
9e9695c7 | 102 | case AF_INET: { |
14fa60f2 BJ |
103 | if (((struct sockaddr_in *)addr)->sin_addr.s_addr && |
104 | if_ifwithaddr(addr) == 0) | |
105 | return (EADDRNOTAVAIL); | |
106 | break; | |
9e9695c7 SL |
107 | } |
108 | #endif | |
14fa60f2 BJ |
109 | |
110 | #ifdef PUP | |
111 | /* | |
112 | * Curious, we convert PUP address format to internet | |
113 | * to allow us to verify we're asking for an Ethernet | |
114 | * interface. This is wrong, but things are heavily | |
115 | * oriented towards the internet addressing scheme, and | |
116 | * converting internet to PUP would be very expensive. | |
117 | */ | |
118 | case AF_PUP: { | |
14fa60f2 BJ |
119 | struct sockaddr_pup *spup = (struct sockaddr_pup *)addr; |
120 | struct sockaddr_in inpup; | |
121 | ||
af0b24db | 122 | bzero((caddr_t)&inpup, (unsigned)sizeof(inpup)); |
14fa60f2 | 123 | inpup.sin_family = AF_INET; |
a6787e03 | 124 | inpup.sin_addr = if_makeaddr(spup->spup_net, spup->spup_host); |
14fa60f2 BJ |
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 | } |