From 1b06e6ba25a37fe1c289049d0e0300d71ae39eff Mon Sep 17 00:00:00 2001 From: Shaun Pereira Date: Wed, 22 Mar 2006 00:00:12 -0800 Subject: [X25]: ioctl conversion 32 bit user to 64 bit kernel To allow 32 bit x25 module structures to be passed to a 64 bit kernel via ioctl using the new compat_sock_ioctl registration mechanism instead of the obsolete 'register_ioctl32_conversion into hash table' mechanism Signed-off-by: Shaun Pereira Acked-by: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: David S. Miller --- net/x25/af_x25.c | 124 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 124 insertions(+) (limited to 'net/x25') diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c index 72b6ff3299b..a41cc020176 100644 --- a/net/x25/af_x25.c +++ b/net/x25/af_x25.c @@ -54,7 +54,10 @@ #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; @@ -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) { @@ -1387,6 +1398,116 @@ 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 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 +1519,9 @@ 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, -- cgit v1.2.3 From bac37ec8300389d355d41a828b47577c1ec2e4f4 Mon Sep 17 00:00:00 2001 From: Shaun Pereira Date: Wed, 22 Mar 2006 00:00:40 -0800 Subject: [X25]: fix kernel error message 64 bit kernel Fixes the following error from kernel T2 kernel: schedule_timeout: wrong timeout value ffffffffffffffff from ffffffff88164796 Signed-off-by: Shaun Pereira Acked-by: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: David S. Miller --- net/x25/af_x25.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/x25') diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c index a41cc020176..03725c05175 100644 --- a/net/x25/af_x25.c +++ b/net/x25/af_x25.c @@ -744,7 +744,7 @@ 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; -- cgit v1.2.3 From a64b7b936dcd926ace745c07c14f45ecfaddb034 Mon Sep 17 00:00:00 2001 From: Shaun Pereira Date: Wed, 22 Mar 2006 00:01:31 -0800 Subject: [X25]: allow ITU-T DTE facilities for x25 Allows use of the optional user facility to insert ITU-T (http://www.itu.int/ITU-T/) specified DTE facilities in call set-up x25 packets. This feature is optional; no facilities will be added if the ioctl is not used, and call setup packet remains the same as before. If the ioctls provided by the patch are used, then a facility marker will be added to the x25 packet header so that the called dte address extension facility can be differentiated from other types of facilities (as described in the ITU-T X.25 recommendation) that are also allowed in the x25 packet header. Facility markers are made up of two octets, and may be present in the x25 packet headers of call-request, incoming call, call accepted, clear request, and clear indication packets. The first of the two octets represents the facility code field and is set to zero by this patch. The second octet of the marker represents the facility parameter field and is set to 0x0F because the marker will be inserted before ITU-T type DTE facilities. Since according to ITU-T X.25 Recommendation X.25(10/96)- 7.1 "All networks will support the facility markers with a facility parameter field set to all ones or to 00001111", therefore this patch should work with all x.25 networks. While there are many ITU-T DTE facilities, this patch implements only the called and calling address extension, with placeholders in the x25_dte_facilities structure for the rest of the facilities. Testing: This patch was tested using a cisco xot router connected on its serial ports to an X.25 network, and on its lan ports to a host running an xotd daemon. It is also possible to test this patch using an xotd daemon and an x25tap patch, where the xotd daemons work back-to-back without actually using an x.25 network. See www.fyonne.net for details on how to do this. Signed-off-by: Shaun Pereira Acked-by: Andrew Hendry Signed-off-by: Andrew Morton Signed-off-by: David S. Miller --- net/x25/af_x25.c | 45 +++++++++++++++++++++++++- net/x25/x25_facilities.c | 82 +++++++++++++++++++++++++++++++++++++++++------- net/x25/x25_in.c | 3 +- net/x25/x25_subr.c | 6 ++-- 4 files changed, 120 insertions(+), 16 deletions(-) (limited to 'net/x25') diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c index 03725c05175..7bf93df7248 100644 --- a/net/x25/af_x25.c +++ b/net/x25/af_x25.c @@ -525,6 +525,13 @@ 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; @@ -561,6 +568,7 @@ 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; @@ -840,6 +848,7 @@ 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; + struct x25_dte_facilities dte_facilities; int len, rc; /* @@ -876,7 +885,8 @@ int x25_rx_call_request(struct sk_buff *skb, struct x25_neigh *nb, /* * 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; /* @@ -907,9 +917,12 @@ 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 */ @@ -1316,6 +1329,36 @@ 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, diff --git a/net/x25/x25_facilities.c b/net/x25/x25_facilities.c index 54278b962f4..9f42b9c9de3 100644 --- a/net/x25/x25_facilities.c +++ b/net/x25/x25_facilities.c @@ -28,18 +28,28 @@ #include /* - * Parse a set of facilities into the facilities structure. Unrecognised + * Parse a set of facilities into the facilities structures. Unrecognised * facilities are written to the debug log file. */ -int x25_parse_facilities(struct sk_buff *skb, - struct x25_facilities *facilities, - unsigned long *vc_fac_mask) +int x25_parse_facilities(struct sk_buff *skb, struct x25_facilities *facilities, + struct x25_dte_facilities *dte_facs, unsigned long *vc_fac_mask) { unsigned char *p = skb->data; unsigned int len = *p++; *vc_fac_mask = 0; + /* + * The kernel knows which facilities were set on an incoming call but + * currently this information is not available to userspace. Here we + * give userspace who read incoming call facilities 0 length to indicate + * it wasn't set. + */ + dte_facs->calling_len = 0; + dte_facs->called_len = 0; + memset(dte_facs->called_ae, '\0', sizeof(dte_facs->called_ae)); + memset(dte_facs->calling_ae, '\0', sizeof(dte_facs->calling_ae)); + while (len > 0) { switch (*p & X25_FAC_CLASS_MASK) { case X25_FAC_CLASS_A: @@ -74,6 +84,8 @@ int x25_parse_facilities(struct sk_buff *skb, facilities->throughput = p[1]; *vc_fac_mask |= X25_MASK_THROUGHPUT; break; + case X25_MARKER: + break; default: printk(KERN_DEBUG "X.25: unknown facility " "%02X, value %02X\n", @@ -112,11 +124,30 @@ int x25_parse_facilities(struct sk_buff *skb, len -= 4; break; case X25_FAC_CLASS_D: - printk(KERN_DEBUG "X.25: unknown facility %02X, " - "length %d, values %02X, %02X, %02X, %02X\n", - p[0], p[1], p[2], p[3], p[4], p[5]); + switch (*p) { + case X25_FAC_CALLING_AE: + if (p[1] > X25_MAX_DTE_FACIL_LEN) + break; + dte_facs->calling_len = p[2]; + memcpy(dte_facs->calling_ae, &p[3], p[1] - 1); + *vc_fac_mask |= X25_MASK_CALLING_AE; + break; + case X25_FAC_CALLED_AE: + if (p[1] > X25_MAX_DTE_FACIL_LEN) + break; + dte_facs->called_len = p[2]; + memcpy(dte_facs->called_ae, &p[3], p[1] - 1); + *vc_fac_mask |= X25_MASK_CALLED_AE; + break; + default: + printk(KERN_DEBUG "X.25: unknown facility %02X," + "length %d, values %02X, %02X, " + "%02X, %02X\n", + p[0], p[1], p[2], p[3], p[4], p[5]); + break; + } len -= p[1] + 2; - p += p[1] + 2; + p += p[1] + 2; break; } } @@ -128,8 +159,8 @@ int x25_parse_facilities(struct sk_buff *skb, * Create a set of facilities. */ int x25_create_facilities(unsigned char *buffer, - struct x25_facilities *facilities, - unsigned long facil_mask) + struct x25_facilities *facilities, + struct x25_dte_facilities *dte_facs, unsigned long facil_mask) { unsigned char *p = buffer + 1; int len; @@ -168,6 +199,33 @@ int x25_create_facilities(unsigned char *buffer, *p++ = facilities->winsize_out ? : facilities->winsize_in; } + if (facil_mask & (X25_MASK_CALLING_AE|X25_MASK_CALLED_AE)) { + *p++ = X25_MARKER; + *p++ = X25_DTE_SERVICES; + } + + if (dte_facs->calling_len && (facil_mask & X25_MASK_CALLING_AE)) { + unsigned bytecount = (dte_facs->calling_len % 2) ? + dte_facs->calling_len / 2 + 1 : + dte_facs->calling_len / 2; + *p++ = X25_FAC_CALLING_AE; + *p++ = 1 + bytecount; + *p++ = dte_facs->calling_len; + memcpy(p, dte_facs->calling_ae, bytecount); + p += bytecount; + } + + if (dte_facs->called_len && (facil_mask & X25_MASK_CALLED_AE)) { + unsigned bytecount = (dte_facs->called_len % 2) ? + dte_facs->called_len / 2 + 1 : + dte_facs->called_len / 2; + *p++ = X25_FAC_CALLED_AE; + *p++ = 1 + bytecount; + *p++ = dte_facs->called_len; + memcpy(p, dte_facs->called_ae, bytecount); + p+=bytecount; + } + len = p - buffer; buffer[0] = len - 1; @@ -180,7 +238,7 @@ int x25_create_facilities(unsigned char *buffer, * The only real problem is with reverse charging. */ int x25_negotiate_facilities(struct sk_buff *skb, struct sock *sk, - struct x25_facilities *new) + struct x25_facilities *new, struct x25_dte_facilities *dte) { struct x25_sock *x25 = x25_sk(sk); struct x25_facilities *ours = &x25->facilities; @@ -190,7 +248,7 @@ int x25_negotiate_facilities(struct sk_buff *skb, struct sock *sk, memset(&theirs, 0, sizeof(theirs)); memcpy(new, ours, sizeof(*new)); - len = x25_parse_facilities(skb, &theirs, &x25->vc_facil_mask); + len = x25_parse_facilities(skb, &theirs, dte, &x25->vc_facil_mask); /* * They want reverse charging, we won't accept it. diff --git a/net/x25/x25_in.c b/net/x25/x25_in.c index 26146874b83..eed50e10f09 100644 --- a/net/x25/x25_in.c +++ b/net/x25/x25_in.c @@ -106,7 +106,8 @@ static int x25_state1_machine(struct sock *sk, struct sk_buff *skb, int frametyp skb_pull(skb, x25_addr_ntoa(skb->data, &source_addr, &dest_addr)); skb_pull(skb, x25_parse_facilities(skb, &x25->facilities, - &x25->vc_facil_mask)); + &x25->dte_facilities, + &x25->vc_facil_mask)); /* * Copy any Call User Data. */ diff --git a/net/x25/x25_subr.c b/net/x25/x25_subr.c index 8be9b8fbc24..8d6220aa5d0 100644 --- a/net/x25/x25_subr.c +++ b/net/x25/x25_subr.c @@ -190,8 +190,9 @@ void x25_write_internal(struct sock *sk, int frametype) dptr = skb_put(skb, len); memcpy(dptr, addresses, len); len = x25_create_facilities(facilities, - &x25->facilities, - x25->neighbour->global_facil_mask); + &x25->facilities, + &x25->dte_facilities, + x25->neighbour->global_facil_mask); dptr = skb_put(skb, len); memcpy(dptr, facilities, len); dptr = skb_put(skb, x25->calluserdata.cudlength); @@ -206,6 +207,7 @@ void x25_write_internal(struct sock *sk, int frametype) *dptr++ = 0x00; /* Address lengths */ len = x25_create_facilities(facilities, &x25->facilities, + &x25->dte_facilities, x25->vc_facil_mask); dptr = skb_put(skb, len); memcpy(dptr, facilities, len); -- cgit v1.2.3 From 9a6b9f2e763a1d1492e164f13c13b995a9b98d78 Mon Sep 17 00:00:00 2001 From: Shaun Pereira Date: Wed, 22 Mar 2006 00:02:00 -0800 Subject: [X25]: dte facilities 32 64 ioctl conversion Allows dte facility patch to use 32 64 bit ioctl conversion mechanism Signed-off-by: Shaun Pereira Signed-off-by: Andrew Morton Signed-off-by: David S. Miller --- net/x25/af_x25.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'net/x25') diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c index 7bf93df7248..282ce4e40d7 100644 --- a/net/x25/af_x25.c +++ b/net/x25/af_x25.c @@ -1535,6 +1535,8 @@ static int compat_x25_ioctl(struct socket *sock, unsigned int cmd, break; case SIOCX25GFACILITIES: case SIOCX25SFACILITIES: + case SIOCX25GDTEFACILITIES: + case SIOCX25SDTEFACILITIES: case SIOCX25GCALLUSERDATA: case SIOCX25SCALLUSERDATA: case SIOCX25GCAUSEDIAG: -- cgit v1.2.3