X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=net%2Fx25%2Faf_x25.c;h=b37d894358ec28fb68e83d387a79b486024e40a2;hb=68a696a01f482859a9fe937249e8b3d44252b610;hp=72b6ff3299ba38971693b08964ac0d546079f192;hpb=4fc268d24ceb9f4150777c1b5b2b8e6214e56b2b;p=mv-sheeva.git diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c index 72b6ff3299b..b37d894358e 100644 --- a/net/x25/af_x25.c +++ b/net/x25/af_x25.c @@ -35,7 +35,6 @@ * response */ -#include #include #include #include @@ -54,13 +53,17 @@ #include /* For TIOCINQ/OUTQ */ #include #include +#include + #include +#include int sysctl_x25_restart_request_timeout = X25_DEFAULT_T20; int sysctl_x25_call_request_timeout = X25_DEFAULT_T21; int sysctl_x25_reset_request_timeout = X25_DEFAULT_T22; int sysctl_x25_clear_request_timeout = X25_DEFAULT_T23; int sysctl_x25_ack_holdback_timeout = X25_DEFAULT_T2; +int sysctl_x25_forward = 0; HLIST_HEAD(x25_list); DEFINE_RWLOCK(x25_list_lock); @@ -69,6 +72,14 @@ static const struct proto_ops x25_proto_ops; static struct x25_address null_x25_address = {" "}; +#ifdef CONFIG_COMPAT +struct compat_x25_subscrip_struct { + char device[200-sizeof(compat_ulong_t)]; + compat_ulong_t global_facil_mask; + compat_uint_t extended; +}; +#endif + int x25_addr_ntoa(unsigned char *p, struct x25_address *called_addr, struct x25_address *calling_addr) { @@ -474,8 +485,6 @@ out: return sk; } -void x25_init_timers(struct sock *sk); - static int x25_create(struct socket *sock, int protocol) { struct sock *sk; @@ -514,6 +523,13 @@ static int x25_create(struct socket *sock, int protocol) x25->facilities.pacsize_out = X25_DEFAULT_PACKET_SIZE; x25->facilities.throughput = X25_DEFAULT_THROUGHPUT; x25->facilities.reverse = X25_DEFAULT_REVERSE; + x25->dte_facilities.calling_len = 0; + x25->dte_facilities.called_len = 0; + memset(x25->dte_facilities.called_ae, '\0', + sizeof(x25->dte_facilities.called_ae)); + memset(x25->dte_facilities.calling_ae, '\0', + sizeof(x25->dte_facilities.calling_ae)); + rc = 0; out: return rc; @@ -550,6 +566,7 @@ static struct sock *x25_make_new(struct sock *osk) x25->t2 = ox25->t2; x25->facilities = ox25->facilities; x25->qbitincl = ox25->qbitincl; + x25->dte_facilities = ox25->dte_facilities; x25->cudmatchlength = ox25->cudmatchlength; x25->accptapprv = ox25->accptapprv; @@ -733,7 +750,7 @@ out: return rc; } -static int x25_wait_for_data(struct sock *sk, int timeout) +static int x25_wait_for_data(struct sock *sk, long timeout) { DECLARE_WAITQUEUE(wait, current); int rc = 0; @@ -829,7 +846,8 @@ int x25_rx_call_request(struct sk_buff *skb, struct x25_neigh *nb, struct x25_sock *makex25; struct x25_address source_addr, dest_addr; struct x25_facilities facilities; - int len, rc; + struct x25_dte_facilities dte_facilities; + int len, addr_len, rc; /* * Remove the LCI and frame type. @@ -840,7 +858,8 @@ int x25_rx_call_request(struct sk_buff *skb, struct x25_neigh *nb, * Extract the X.25 addresses and convert them to ASCII strings, * and remove them. */ - skb_pull(skb, x25_addr_ntoa(skb->data, &source_addr, &dest_addr)); + addr_len = x25_addr_ntoa(skb->data, &source_addr, &dest_addr); + skb_pull(skb, addr_len); /* * Get the length of the facilities, skip past them for the moment @@ -856,16 +875,34 @@ int x25_rx_call_request(struct sk_buff *skb, struct x25_neigh *nb, sk = x25_find_listener(&source_addr,skb); skb_push(skb,len); + if (sk != NULL && sk_acceptq_is_full(sk)) { + goto out_sock_put; + } + /* - * We can't accept the Call Request. + * We dont have any listeners for this incoming call. + * Try forwarding it. */ - if (sk == NULL || sk_acceptq_is_full(sk)) - goto out_clear_request; + if (sk == NULL) { + skb_push(skb, addr_len + X25_STD_MIN_LEN); + if (sysctl_x25_forward && + x25_forward_call(&dest_addr, nb, skb, lci) > 0) + { + /* Call was forwarded, dont process it any more */ + kfree_skb(skb); + rc = 1; + goto out; + } else { + /* No listeners, can't forward, clear the call */ + goto out_clear_request; + } + } /* * Try to reach a compromise on the requested facilities. */ - if ((len = x25_negotiate_facilities(skb, sk, &facilities)) == -1) + len = x25_negotiate_facilities(skb, sk, &facilities, &dte_facilities); + if (len == -1) goto out_sock_put; /* @@ -896,9 +933,12 @@ int x25_rx_call_request(struct sk_buff *skb, struct x25_neigh *nb, makex25->source_addr = source_addr; makex25->neighbour = nb; makex25->facilities = facilities; + makex25->dte_facilities= dte_facilities; makex25->vc_facil_mask = x25_sk(sk)->vc_facil_mask; /* ensure no reverse facil on accept */ makex25->vc_facil_mask &= ~X25_MASK_REVERSE; + /* ensure no calling address extension on accept */ + makex25->vc_facil_mask &= ~X25_MASK_CALLING_AE; makex25->cudmatchlength = x25_sk(sk)->cudmatchlength; /* Normally all calls are accepted immediatly */ @@ -1305,6 +1345,36 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) break; } + case SIOCX25GDTEFACILITIES: { + rc = copy_to_user(argp, &x25->dte_facilities, + sizeof(x25->dte_facilities)); + if (rc) + rc = -EFAULT; + break; + } + + case SIOCX25SDTEFACILITIES: { + struct x25_dte_facilities dtefacs; + rc = -EFAULT; + if (copy_from_user(&dtefacs, argp, sizeof(dtefacs))) + break; + rc = -EINVAL; + if (sk->sk_state != TCP_LISTEN && + sk->sk_state != TCP_CLOSE) + break; + if (dtefacs.calling_len > X25_MAX_AE_LEN) + break; + if (dtefacs.calling_ae == NULL) + break; + if (dtefacs.called_len > X25_MAX_AE_LEN) + break; + if (dtefacs.called_ae == NULL) + break; + x25->dte_facilities = dtefacs; + rc = 0; + break; + } + case SIOCX25GCALLUSERDATA: { struct x25_calluserdata cud = x25->calluserdata; rc = copy_to_user(argp, &cud, @@ -1387,6 +1457,118 @@ static struct net_proto_family x25_family_ops = { .owner = THIS_MODULE, }; +#ifdef CONFIG_COMPAT +static int compat_x25_subscr_ioctl(unsigned int cmd, + struct compat_x25_subscrip_struct __user *x25_subscr32) +{ + struct compat_x25_subscrip_struct x25_subscr; + struct x25_neigh *nb; + struct net_device *dev; + int rc = -EINVAL; + + rc = -EFAULT; + if (copy_from_user(&x25_subscr, x25_subscr32, sizeof(*x25_subscr32))) + goto out; + + rc = -EINVAL; + dev = x25_dev_get(x25_subscr.device); + if (dev == NULL) + goto out; + + nb = x25_get_neigh(dev); + if (nb == NULL) + goto out_dev_put; + + dev_put(dev); + + if (cmd == SIOCX25GSUBSCRIP) { + x25_subscr.extended = nb->extended; + x25_subscr.global_facil_mask = nb->global_facil_mask; + rc = copy_to_user(x25_subscr32, &x25_subscr, + sizeof(*x25_subscr32)) ? -EFAULT : 0; + } else { + rc = -EINVAL; + if (x25_subscr.extended == 0 || x25_subscr.extended == 1) { + rc = 0; + nb->extended = x25_subscr.extended; + nb->global_facil_mask = x25_subscr.global_facil_mask; + } + } + x25_neigh_put(nb); +out: + return rc; +out_dev_put: + dev_put(dev); + goto out; +} + +static int compat_x25_ioctl(struct socket *sock, unsigned int cmd, + unsigned long arg) +{ + void __user *argp = compat_ptr(arg); + struct sock *sk = sock->sk; + + int rc = -ENOIOCTLCMD; + + switch(cmd) { + case TIOCOUTQ: + case TIOCINQ: + rc = x25_ioctl(sock, cmd, (unsigned long)argp); + break; + case SIOCGSTAMP: + rc = -EINVAL; + if (sk) + rc = compat_sock_get_timestamp(sk, + (struct timeval __user*)argp); + break; + case SIOCGIFADDR: + case SIOCSIFADDR: + case SIOCGIFDSTADDR: + case SIOCSIFDSTADDR: + case SIOCGIFBRDADDR: + case SIOCSIFBRDADDR: + case SIOCGIFNETMASK: + case SIOCSIFNETMASK: + case SIOCGIFMETRIC: + case SIOCSIFMETRIC: + rc = -EINVAL; + break; + case SIOCADDRT: + case SIOCDELRT: + rc = -EPERM; + if (!capable(CAP_NET_ADMIN)) + break; + rc = x25_route_ioctl(cmd, argp); + break; + case SIOCX25GSUBSCRIP: + rc = compat_x25_subscr_ioctl(cmd, argp); + break; + case SIOCX25SSUBSCRIP: + rc = -EPERM; + if (!capable(CAP_NET_ADMIN)) + break; + rc = compat_x25_subscr_ioctl(cmd, argp); + break; + case SIOCX25GFACILITIES: + case SIOCX25SFACILITIES: + case SIOCX25GDTEFACILITIES: + case SIOCX25SDTEFACILITIES: + case SIOCX25GCALLUSERDATA: + case SIOCX25SCALLUSERDATA: + case SIOCX25GCAUSEDIAG: + case SIOCX25SCUDMATCHLEN: + case SIOCX25CALLACCPTAPPRV: + case SIOCX25SENDCALLACCPT: + rc = x25_ioctl(sock, cmd, (unsigned long)argp); + break; + default: + rc = -ENOIOCTLCMD; + break; + } + return rc; +} +#endif + static const struct proto_ops SOCKOPS_WRAPPED(x25_proto_ops) = { .family = AF_X25, .owner = THIS_MODULE, @@ -1398,6 +1580,9 @@ static const struct proto_ops SOCKOPS_WRAPPED(x25_proto_ops) = { .getname = x25_getname, .poll = datagram_poll, .ioctl = x25_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = compat_x25_ioctl, +#endif .listen = x25_listen, .shutdown = sock_no_shutdown, .setsockopt = x25_setsockopt, @@ -1432,6 +1617,9 @@ void x25_kill_by_neigh(struct x25_neigh *nb) x25_disconnect(s, ENETUNREACH, 0, 0); write_unlock_bh(&x25_list_lock); + + /* Remove any related forwards */ + x25_clear_forward_by_dev(nb->dev); } static int __init x25_init(void)