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path: root/net/packet/af_packet.c
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Diffstat (limited to 'net/packet/af_packet.c')
-rw-r--r--net/packet/af_packet.c79
1 files changed, 42 insertions, 37 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 1322d62b5d9..e11000a8e95 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -61,6 +61,7 @@
#include <linux/wireless.h>
#include <linux/kernel.h>
#include <linux/kmod.h>
+#include <net/net_namespace.h>
#include <net/ip.h>
#include <net/protocol.h>
#include <linux/skbuff.h>
@@ -251,6 +252,9 @@ static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev, struct
struct sock *sk;
struct sockaddr_pkt *spkt;
+ if (dev->nd_net != &init_net)
+ goto out;
+
/*
* When we registered the protocol we saved the socket in the data
* field for just this event.
@@ -343,7 +347,7 @@ static int packet_sendmsg_spkt(struct kiocb *iocb, struct socket *sock,
*/
saddr->spkt_device[13] = 0;
- dev = dev_get_by_name(saddr->spkt_device);
+ dev = dev_get_by_name(&init_net, saddr->spkt_device);
err = -ENODEV;
if (dev == NULL)
goto out_unlock;
@@ -385,7 +389,7 @@ static int packet_sendmsg_spkt(struct kiocb *iocb, struct socket *sock,
skb_reset_network_header(skb);
/* Try to align data part correctly */
- if (dev->hard_header) {
+ if (dev->header_ops) {
skb->data -= dev->hard_header_len;
skb->tail -= dev->hard_header_len;
if (len < dev->hard_header_len)
@@ -451,6 +455,9 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, struct packet
int skb_len = skb->len;
unsigned int snaplen, res;
+ if (dev->nd_net != &init_net)
+ goto drop;
+
if (skb->pkt_type == PACKET_LOOPBACK)
goto drop;
@@ -459,7 +466,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, struct packet
skb->dev = dev;
- if (dev->hard_header) {
+ if (dev->header_ops) {
/* The device has an explicit notion of ll header,
exported to higher levels.
@@ -512,10 +519,8 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, struct packet
sll->sll_ifindex = orig_dev->ifindex;
else
sll->sll_ifindex = dev->ifindex;
- sll->sll_halen = 0;
- if (dev->hard_header_parse)
- sll->sll_halen = dev->hard_header_parse(skb, sll->sll_addr);
+ sll->sll_halen = dev_parse_header(skb, sll->sll_addr);
PACKET_SKB_CB(skb)->origlen = skb->len;
@@ -567,13 +572,16 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe
struct sk_buff *copy_skb = NULL;
struct timeval tv;
+ if (dev->nd_net != &init_net)
+ goto drop;
+
if (skb->pkt_type == PACKET_LOOPBACK)
goto drop;
sk = pt->af_packet_priv;
po = pkt_sk(sk);
- if (dev->hard_header) {
+ if (dev->header_ops) {
if (sk->sk_type != SOCK_DGRAM)
skb_push(skb, skb->data - skb_mac_header(skb));
else if (skb->pkt_type == PACKET_OUTGOING) {
@@ -640,18 +648,15 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe
h->tp_snaplen = snaplen;
h->tp_mac = macoff;
h->tp_net = netoff;
- if (skb->tstamp.tv64 == 0) {
- __net_timestamp(skb);
- sock_enable_timestamp(sk);
- }
- tv = ktime_to_timeval(skb->tstamp);
+ if (skb->tstamp.tv64)
+ tv = ktime_to_timeval(skb->tstamp);
+ else
+ do_gettimeofday(&tv);
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;
- if (dev->hard_header_parse)
- sll->sll_halen = dev->hard_header_parse(skb, sll->sll_addr);
+ sll->sll_halen = dev_parse_header(skb, sll->sll_addr);
sll->sll_family = AF_PACKET;
sll->sll_hatype = dev->type;
sll->sll_protocol = skb->protocol;
@@ -733,7 +738,7 @@ static int packet_sendmsg(struct kiocb *iocb, struct socket *sock,
}
- dev = dev_get_by_index(ifindex);
+ dev = dev_get_by_index(&init_net, ifindex);
err = -ENXIO;
if (dev == NULL)
goto out_unlock;
@@ -756,16 +761,10 @@ static int packet_sendmsg(struct kiocb *iocb, struct socket *sock,
skb_reserve(skb, LL_RESERVED_SPACE(dev));
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_reset_tail_pointer(skb);
- skb->len = 0;
- } else if (res < 0)
- goto out_free;
- }
+ err = -EINVAL;
+ if (sock->type == SOCK_DGRAM &&
+ dev_hard_header(skb, dev, ntohs(proto), addr, NULL, len) < 0)
+ goto out_free;
/* Returns -EFAULT on error */
err = memcpy_fromiovec(skb_put(skb,len), msg->msg_iov, len);
@@ -928,7 +927,7 @@ static int packet_bind_spkt(struct socket *sock, struct sockaddr *uaddr, int add
return -EINVAL;
strlcpy(name,uaddr->sa_data,sizeof(name));
- dev = dev_get_by_name(name);
+ dev = dev_get_by_name(&init_net, name);
if (dev) {
err = packet_do_bind(sk, dev, pkt_sk(sk)->num);
dev_put(dev);
@@ -955,7 +954,7 @@ static int packet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len
if (sll->sll_ifindex) {
err = -ENODEV;
- dev = dev_get_by_index(sll->sll_ifindex);
+ dev = dev_get_by_index(&init_net, sll->sll_ifindex);
if (dev == NULL)
goto out;
}
@@ -977,13 +976,16 @@ static struct proto packet_proto = {
* Create a packet of type SOCK_PACKET.
*/
-static int packet_create(struct socket *sock, int protocol)
+static int packet_create(struct net *net, struct socket *sock, int protocol)
{
struct sock *sk;
struct packet_sock *po;
__be16 proto = (__force __be16)protocol; /* weird, but documented */
int err;
+ if (net != &init_net)
+ return -EAFNOSUPPORT;
+
if (!capable(CAP_NET_RAW))
return -EPERM;
if (sock->type != SOCK_DGRAM && sock->type != SOCK_RAW &&
@@ -993,7 +995,7 @@ static int packet_create(struct socket *sock, int protocol)
sock->state = SS_UNCONNECTED;
err = -ENOBUFS;
- sk = sk_alloc(PF_PACKET, GFP_KERNEL, &packet_proto, 1);
+ sk = sk_alloc(net, PF_PACKET, GFP_KERNEL, &packet_proto, 1);
if (sk == NULL)
goto out;
@@ -1149,7 +1151,7 @@ static int packet_getname_spkt(struct socket *sock, struct sockaddr *uaddr,
return -EOPNOTSUPP;
uaddr->sa_family = AF_PACKET;
- dev = dev_get_by_index(pkt_sk(sk)->ifindex);
+ dev = dev_get_by_index(&init_net, pkt_sk(sk)->ifindex);
if (dev) {
strlcpy(uaddr->sa_data, dev->name, 15);
dev_put(dev);
@@ -1174,7 +1176,7 @@ static int packet_getname(struct socket *sock, struct sockaddr *uaddr,
sll->sll_family = AF_PACKET;
sll->sll_ifindex = po->ifindex;
sll->sll_protocol = po->num;
- dev = dev_get_by_index(po->ifindex);
+ dev = dev_get_by_index(&init_net, po->ifindex);
if (dev) {
sll->sll_hatype = dev->type;
sll->sll_halen = dev->addr_len;
@@ -1226,7 +1228,7 @@ static int packet_mc_add(struct sock *sk, struct packet_mreq_max *mreq)
rtnl_lock();
err = -ENODEV;
- dev = __dev_get_by_index(mreq->mr_ifindex);
+ dev = __dev_get_by_index(&init_net, mreq->mr_ifindex);
if (!dev)
goto done;
@@ -1280,7 +1282,7 @@ static int packet_mc_drop(struct sock *sk, struct packet_mreq_max *mreq)
if (--ml->count == 0) {
struct net_device *dev;
*mlp = ml->next;
- dev = dev_get_by_index(ml->ifindex);
+ dev = dev_get_by_index(&init_net, ml->ifindex);
if (dev) {
packet_dev_mc(dev, ml, -1);
dev_put(dev);
@@ -1308,7 +1310,7 @@ static void packet_flush_mclist(struct sock *sk)
struct net_device *dev;
po->mclist = ml->next;
- if ((dev = dev_get_by_index(ml->ifindex)) != NULL) {
+ if ((dev = dev_get_by_index(&init_net, ml->ifindex)) != NULL) {
packet_dev_mc(dev, ml, -1);
dev_put(dev);
}
@@ -1465,6 +1467,9 @@ static int packet_notifier(struct notifier_block *this, unsigned long msg, void
struct hlist_node *node;
struct net_device *dev = data;
+ if (dev->nd_net != &init_net)
+ return NOTIFY_DONE;
+
read_lock(&packet_sklist_lock);
sk_for_each(sk, node, &packet_sklist) {
struct packet_sock *po = pkt_sk(sk);
@@ -1952,7 +1957,7 @@ static const struct file_operations packet_seq_fops = {
static void __exit packet_exit(void)
{
- proc_net_remove("packet");
+ proc_net_remove(&init_net, "packet");
unregister_netdevice_notifier(&packet_netdev_notifier);
sock_unregister(PF_PACKET);
proto_unregister(&packet_proto);
@@ -1967,7 +1972,7 @@ static int __init packet_init(void)
sock_register(&packet_family_ops);
register_netdevice_notifier(&packet_netdev_notifier);
- proc_net_fops_create("packet", 0, &packet_seq_fops);
+ proc_net_fops_create(&init_net, "packet", 0, &packet_seq_fops);
out:
return rc;
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-11 14:41:57 +0000