#define CONFIG_SOCK_PACKET 1
-/*
- Proposed replacement for SIOC{ADD,DEL}MULTI and
- IFF_PROMISC, IFF_ALLMULTI flags.
-
- It is more expensive, but I believe,
- it is really correct solution: reentereble, safe and fault tolerant.
-
- IFF_PROMISC/IFF_ALLMULTI/SIOC{ADD/DEL}MULTI are faked by keeping
- reference count and global flag, so that real status is
- (gflag|(count != 0)), so that we can use obsolete faulty interface
- not harming clever users.
- */
-#define CONFIG_PACKET_MULTICAST 1
-
/*
Assumptions:
- if device has no dev->hard_header routine, it adds and removes ll header
-----------
Incoming, dev->hard_header!=NULL
- mac.raw -> ll header
- data -> data
+ mac_header -> ll header
+ data -> data
Outgoing, dev->hard_header!=NULL
- mac.raw -> ll header
- data -> ll header
+ mac_header -> ll header
+ data -> ll header
Incoming, dev->hard_header==NULL
- mac.raw -> UNKNOWN position. It is very likely, that it points to ll header.
- PPP makes it, that is wrong, because introduce assymetry
- between rx and tx paths.
- data -> data
+ mac_header -> UNKNOWN position. It is very likely, that it points to ll
+ header. PPP makes it, that is wrong, because introduce
+ assymetry between rx and tx paths.
+ data -> data
Outgoing, dev->hard_header==NULL
- mac.raw -> data. ll header is still not built!
- data -> data
+ mac_header -> data. ll header is still not built!
+ data -> data
Resume
If dev->hard_header==NULL we are unlikely to restore sensible ll header.
------------
dev->hard_header != NULL
- mac.raw -> ll header
- data -> ll header
+ mac_header -> ll header
+ data -> ll header
dev->hard_header == NULL (ll header is added by device, we cannot control it)
- mac.raw -> data
- data -> data
+ mac_header -> data
+ data -> data
We should set nh.raw on output to correct posistion,
packet classifier depends on it.
/* Private packet socket structures. */
-#ifdef CONFIG_PACKET_MULTICAST
struct packet_mclist
{
struct packet_mclist *next;
unsigned short mr_alen;
unsigned char mr_address[MAX_ADDR_LEN];
};
-#endif
+
#ifdef CONFIG_PACKET_MMAP
static int packet_set_ring(struct sock *sk, struct tpacket_req *req, int closing);
#endif
struct packet_type prot_hook;
spinlock_t bind_lock;
unsigned int running:1, /* prot_hook is attached*/
- auxdata:1;
+ auxdata:1,
+ origdev:1;
int ifindex; /* bound device */
__be16 num;
-#ifdef CONFIG_PACKET_MULTICAST
struct packet_mclist *mclist;
-#endif
#ifdef CONFIG_PACKET_MMAP
atomic_t mapped;
unsigned int pg_vec_order;
* Incoming packets have ll header pulled,
* push it back.
*
- * For outgoing ones skb->data == skb->mac.raw
+ * For outgoing ones skb->data == skb_mac_header(skb)
* so that this procedure is noop.
*/
spkt = &PACKET_SKB_CB(skb)->sa.pkt;
- skb_push(skb, skb->data-skb->mac.raw);
+ skb_push(skb, skb->data - skb_mac_header(skb));
/*
* The SOCK_PACKET socket receives _all_ frames.
* notable one here. This should really be fixed at the driver level.
*/
skb_reserve(skb, LL_RESERVED_SPACE(dev));
- skb->nh.raw = skb->data;
+ skb_reset_network_header(skb);
/* Try to align data part correctly */
if (dev->hard_header) {
skb->data -= dev->hard_header_len;
skb->tail -= dev->hard_header_len;
if (len < dev->hard_header_len)
- skb->nh.raw = skb->data;
+ skb_reset_network_header(skb);
}
/* Returns -EFAULT on error */
never delivered to user.
*/
if (sk->sk_type != SOCK_DGRAM)
- skb_push(skb, skb->data - skb->mac.raw);
+ skb_push(skb, skb->data - skb_mac_header(skb));
else if (skb->pkt_type == PACKET_OUTGOING) {
/* Special case: outgoing packets have ll header at head */
- skb_pull(skb, skb->nh.raw - skb->data);
+ skb_pull(skb, skb_network_offset(skb));
}
}
sll->sll_hatype = dev->type;
sll->sll_protocol = skb->protocol;
sll->sll_pkttype = skb->pkt_type;
- sll->sll_ifindex = dev->ifindex;
+ if (unlikely(po->origdev) && skb->pkt_type == PACKET_HOST)
+ sll->sll_ifindex = orig_dev->ifindex;
+ else
+ sll->sll_ifindex = dev->ifindex;
sll->sll_halen = 0;
if (dev->hard_header_parse)
unsigned long status = TP_STATUS_LOSING|TP_STATUS_USER;
unsigned short macoff, netoff;
struct sk_buff *copy_skb = NULL;
+ struct timeval tv;
if (skb->pkt_type == PACKET_LOOPBACK)
goto drop;
if (dev->hard_header) {
if (sk->sk_type != SOCK_DGRAM)
- skb_push(skb, skb->data - skb->mac.raw);
+ skb_push(skb, skb->data - skb_mac_header(skb));
else if (skb->pkt_type == PACKET_OUTGOING) {
/* Special case: outgoing packets have ll header at head */
- skb_pull(skb, skb->nh.raw - skb->data);
+ skb_pull(skb, skb_network_offset(skb));
}
}
if (sk->sk_type == SOCK_DGRAM) {
macoff = netoff = TPACKET_ALIGN(TPACKET_HDRLEN) + 16;
} else {
- unsigned maclen = skb->nh.raw - skb->data;
+ unsigned maclen = skb_network_offset(skb);
netoff = TPACKET_ALIGN(TPACKET_HDRLEN + (maclen < 16 ? 16 : maclen));
macoff = netoff - maclen;
}
h->tp_snaplen = snaplen;
h->tp_mac = macoff;
h->tp_net = netoff;
- if (skb->tstamp.off_sec == 0) {
+ if (skb->tstamp.tv64 == 0) {
__net_timestamp(skb);
sock_enable_timestamp(sk);
}
- h->tp_sec = skb->tstamp.off_sec;
- h->tp_usec = skb->tstamp.off_usec;
+ tv = ktime_to_timeval(skb->tstamp);
+ h->tp_sec = tv.tv_sec;
+ h->tp_usec = tv.tv_usec;
sll = (struct sockaddr_ll*)((u8*)h + TPACKET_ALIGN(sizeof(*h)));
sll->sll_halen = 0;
sll->sll_hatype = dev->type;
sll->sll_protocol = skb->protocol;
sll->sll_pkttype = skb->pkt_type;
- sll->sll_ifindex = dev->ifindex;
+ if (unlikely(po->origdev) && skb->pkt_type == PACKET_HOST)
+ sll->sll_ifindex = orig_dev->ifindex;
+ else
+ sll->sll_ifindex = dev->ifindex;
h->tp_status = status;
smp_mb();
goto out_unlock;
skb_reserve(skb, LL_RESERVED_SPACE(dev));
- skb->nh.raw = skb->data;
+ skb_reset_network_header(skb);
if (dev->hard_header) {
int res;
err = -EINVAL;
res = dev->hard_header(skb, dev, ntohs(proto), addr, NULL, len);
if (sock->type != SOCK_DGRAM) {
- skb->tail = skb->data;
+ skb_reset_tail_pointer(skb);
skb->len = 0;
} else if (res < 0)
goto out_free;
__sock_put(sk);
}
-#ifdef CONFIG_PACKET_MULTICAST
packet_flush_mclist(sk);
-#endif
#ifdef CONFIG_PACKET_MMAP
if (po->pg_vec) {
aux.tp_len = PACKET_SKB_CB(skb)->origlen;
aux.tp_snaplen = skb->len;
aux.tp_mac = 0;
- aux.tp_net = skb->nh.raw - skb->data;
+ aux.tp_net = skb_network_offset(skb);
put_cmsg(msg, SOL_PACKET, PACKET_AUXDATA, sizeof(aux), &aux);
}
return 0;
}
-#ifdef CONFIG_PACKET_MULTICAST
static void packet_dev_mc(struct net_device *dev, struct packet_mclist *i, int what)
{
switch (i->type) {
}
rtnl_unlock();
}
-#endif
static int
packet_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen)
return -ENOPROTOOPT;
switch(optname) {
-#ifdef CONFIG_PACKET_MULTICAST
case PACKET_ADD_MEMBERSHIP:
case PACKET_DROP_MEMBERSHIP:
{
ret = packet_mc_drop(sk, &mreq);
return ret;
}
-#endif
+
#ifdef CONFIG_PACKET_MMAP
case PACKET_RX_RING:
{
po->auxdata = !!val;
return 0;
}
+ case PACKET_ORIGDEV:
+ {
+ int val;
+
+ if (optlen < sizeof(val))
+ return -EINVAL;
+ if (copy_from_user(&val, optval, sizeof(val)))
+ return -EFAULT;
+
+ po->origdev = !!val;
+ return 0;
+ }
default:
return -ENOPROTOOPT;
}
len = sizeof(int);
val = po->auxdata;
+ data = &val;
+ break;
+ case PACKET_ORIGDEV:
+ if (len > sizeof(int))
+ len = sizeof(int);
+ val = po->origdev;
+
data = &val;
break;
default:
switch (msg) {
case NETDEV_UNREGISTER:
-#ifdef CONFIG_PACKET_MULTICAST
if (po->mclist)
packet_dev_mclist(dev, po->mclist, -1);
- // fallthrough
-#endif
+ /* fallthrough */
+
case NETDEV_DOWN:
if (dev->ifindex == po->ifindex) {
spin_lock(&po->bind_lock);
}
case SIOCGSTAMP:
return sock_get_timestamp(sk, (struct timeval __user *)arg);
+ case SIOCGSTAMPNS:
+ return sock_get_timestampns(sk, (struct timespec __user *)arg);
#ifdef CONFIG_INET
case SIOCADDRT:
projects / powerpc.git / blobdiff