Commit | Line | Data |
---|---|---|
ee787340 | 1 | /* raw_cb.c 4.6 82/03/28 */ |
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" | |
8 | #include "../h/mtpr.h" | |
9 | #include "../net/in.h" | |
10 | #include "../net/in_systm.h" | |
11 | #include "../net/if.h" | |
12 | #include "../net/raw_cb.h" | |
ee787340 | 13 | #include "../net/pup.h" |
1e25d807 | 14 | #include "../errno.h" |
785d93ac BJ |
15 | |
16 | /* | |
17 | * Routines to manage the raw protocol control blocks. | |
18 | * | |
19 | * TODO: | |
20 | * hash lookups by protocol family/protocol + address family | |
ee787340 | 21 | * take care of unique address problems per AF? |
1e25d807 | 22 | * redo address binding to allow wildcards |
785d93ac BJ |
23 | */ |
24 | ||
25 | /* | |
26 | * Allocate a control block and a nominal amount | |
27 | * of buffer space for the socket. | |
28 | */ | |
29 | raw_attach(so, addr) | |
30 | register struct socket *so; | |
31 | struct sockaddr *addr; | |
32 | { | |
33 | struct mbuf *m; | |
34 | register struct rawcb *rp; | |
785d93ac BJ |
35 | |
36 | COUNT(RAW_ATTACH); | |
ee787340 SL |
37 | if (ifnet == 0) |
38 | return (EADDRNOTAVAIL); | |
785d93ac BJ |
39 | /* |
40 | * Should we verify address not already in use? | |
41 | * Some say yes, others no. | |
42 | */ | |
43 | if (addr) switch (addr->sa_family) { | |
44 | ||
a2cd4df7 | 45 | case AF_IMPLINK: |
ee787340 SL |
46 | case AF_INET: |
47 | if (((struct sockaddr_in *)addr)->sin_addr.s_addr && | |
48 | if_ifwithaddr(addr) == 0) | |
49 | return (EADDRNOTAVAIL); | |
785d93ac | 50 | break; |
785d93ac | 51 | |
ee787340 SL |
52 | #ifdef PUP |
53 | /* | |
54 | * Curious, we convert PUP address format to internet | |
55 | * to allow us to verify we're asking for an Ethernet | |
56 | * interface. This is wrong, but things are heavily | |
57 | * oriented towards the internet addressing scheme, and | |
58 | * converting internet to PUP would be very expensive. | |
59 | */ | |
60 | case AF_PUP: { | |
61 | struct sockaddr_pup *spup = (struct sockaddr_pup *)addr; | |
62 | struct sockaddr_in inpup; | |
63 | ||
64 | bzero((caddr_t)&inpup, sizeof(inpup)); | |
65 | inpup.sin_addr.s_net = spup->sp_net; | |
66 | inpup.sin_addr.s_impno = spup->sp_host; | |
67 | if (inpup.sin_addr.s_addr && | |
68 | if_ifwithaddr((struct sockaddr *)&inpup) == 0) | |
69 | return (EADDRNOTAVAIL); | |
1e25d807 | 70 | break; |
ee787340 SL |
71 | } |
72 | #endif | |
1e25d807 | 73 | |
785d93ac BJ |
74 | default: |
75 | return (EAFNOSUPPORT); | |
76 | } | |
785d93ac BJ |
77 | m = m_getclr(M_DONTWAIT); |
78 | if (m == 0) | |
79 | return (ENOBUFS); | |
80 | if (sbreserve(&so->so_snd, RAWSNDQ) == 0) | |
81 | goto bad; | |
82 | if (sbreserve(&so->so_rcv, RAWRCVQ) == 0) | |
83 | goto bad2; | |
84 | rp = mtod(m, struct rawcb *); | |
85 | rp->rcb_socket = so; | |
86 | insque(rp, &rawcb); | |
87 | so->so_pcb = (caddr_t)rp; | |
88 | rp->rcb_pcb = 0; | |
785d93ac | 89 | if (addr) |
668cc26d | 90 | bcopy((caddr_t)addr, (caddr_t)&so->so_addr, sizeof(*addr)); |
785d93ac BJ |
91 | return (0); |
92 | bad2: | |
93 | sbrelease(&so->so_snd); | |
94 | bad: | |
95 | (void) m_free(m); | |
96 | return (ENOBUFS); | |
97 | } | |
98 | ||
99 | /* | |
100 | * Detach the raw connection block and discard | |
101 | * socket resources. | |
102 | */ | |
103 | raw_detach(rp) | |
104 | register struct rawcb *rp; | |
105 | { | |
106 | struct socket *so = rp->rcb_socket; | |
107 | ||
108 | COUNT(RAW_DETACH); | |
785d93ac BJ |
109 | so->so_pcb = 0; |
110 | sofree(so); | |
111 | remque(rp); | |
ee787340 | 112 | (void) m_freem(dtom(rp)); |
785d93ac BJ |
113 | } |
114 | ||
115 | /* | |
116 | * Disconnect and possibly release resources. | |
117 | */ | |
118 | raw_disconnect(rp) | |
119 | struct rawcb *rp; | |
120 | { | |
121 | COUNT(RAW_DISCONNECT); | |
785d93ac BJ |
122 | rp->rcb_flags &= ~RAW_ADDR; |
123 | if (rp->rcb_socket->so_state & SS_USERGONE) | |
124 | raw_detach(rp); | |
125 | } | |
126 | ||
127 | /* | |
128 | * Associate a peer's address with a | |
129 | * raw connection block. | |
130 | */ | |
131 | raw_connaddr(rp, addr) | |
132 | struct rawcb *rp; | |
133 | struct sockaddr *addr; | |
134 | { | |
135 | COUNT(RAW_CONNADDR); | |
ee787340 | 136 | bcopy((caddr_t)addr, (caddr_t)&rp->rcb_addr, sizeof(*addr)); |
785d93ac BJ |
137 | rp->rcb_flags |= RAW_ADDR; |
138 | } |