Commit | Line | Data |
---|---|---|
31c2345c | 1 | /* raw_pup.c 4.4 82/03/03 */ |
c2461425 SL |
2 | |
3 | #include "../h/param.h" | |
4 | #include "../h/mbuf.h" | |
5 | #include "../h/socket.h" | |
6 | #include "../h/protosw.h" | |
7 | #include "../h/socketvar.h" | |
8 | #include "../net/in.h" | |
9 | #include "../net/in_systm.h" | |
10 | #include "../net/pup.h" | |
11 | #include "../net/raw_cb.h" | |
12 | #include "/usr/include/errno.h" | |
13 | ||
14 | /* | |
15 | * Raw PUP protocol interface. | |
16 | */ | |
17 | ||
c2461425 | 18 | /*ARGSUSED*/ |
8e999b50 | 19 | rpup_ctlinput(m) |
c2461425 SL |
20 | struct mbuf *m; |
21 | { | |
8e999b50 | 22 | COUNT(RPUP_CTLINPUT); |
c2461425 SL |
23 | } |
24 | ||
25 | /* | |
26 | * Encapsulate packet in PUP header which is supplied by the | |
27 | * user. This is done to allow user to specify PUP identifier. | |
28 | */ | |
8e999b50 | 29 | rpup_output(m0, so) |
c2461425 SL |
30 | struct mbuf *m0; |
31 | struct socket *so; | |
32 | { | |
33 | register struct rawcb *rp = sotorawcb(so); | |
34 | register struct pup_header *pup; | |
35 | int len; | |
36 | struct mbuf *n; | |
37 | struct sockaddr_pup *spup; | |
31c2345c | 38 | struct ifnet *ifp; |
c2461425 | 39 | |
8e999b50 | 40 | COUNT(RPUP_OUTPUT); |
c2461425 SL |
41 | /* |
42 | * Verify user has supplied necessary space | |
43 | * for the header and check parameters in it. | |
44 | */ | |
45 | if ((m->m_off > MMAXOFF || m->m_len < sizeof(struct pup_header)) && | |
46 | (m = m_pullup(m, sizeof(struct pup_header)) == 0) { | |
47 | goto bad; | |
48 | pup = mtod(m, struct pup_header *); | |
49 | if (pup->pup_type == 0) | |
50 | goto bad; | |
51 | if (pup->pup_tcontrol && (pup->pup_tcontrol & ~PUP_TRACE)) | |
52 | goto bad; | |
53 | for (len = 0, n = m; n; n = n->m_next) | |
54 | len += n->m_len; | |
55 | pup->pup_length = len; | |
56 | spup = (struct sockaddr_pup *)&rp->rcb_addr; | |
57 | pup->pup_dport = spup->spup_addr; | |
58 | ||
59 | /* | |
60 | * Insure proper source address is included. | |
61 | */ | |
62 | spup = (struct sockadrr_pup *)rp->rcb_socket->so_addr; | |
63 | pup->pup_sport = spup->spup_addr; | |
64 | /* for now, assume user generates PUP checksum. */ | |
65 | ||
31c2345c SL |
66 | ifp = if_ifonnetof(&rp->rcb_addr); |
67 | if (ifp == 0) { | |
68 | ifp = if_gatewayfor(&rp->rcb_addr); | |
69 | if (ifp == 0) | |
70 | goto bad; | |
71 | } | |
c2461425 SL |
72 | return (enoutput((struct ifnet *)rp->rcb_pcb, m, PF_PUP)); |
73 | ||
74 | bad: | |
75 | m_freem(m); | |
76 | return (0); | |
77 | } |