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authorLinus Torvalds <torvalds@linux-foundation.org>2015-02-10 20:01:30 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-10 20:01:30 -0800
commitc5ce28df0e7c01a1de23c36ebdefcd803f2b6cbb (patch)
tree9830baf38832769e1cf621708889111bbe3c93df /net/tipc/bearer.c
parent29afc4e9a408f2304e09c6dd0dbcfbd2356d0faa (diff)
parent9399f0c51489ae8c16d6559b82a452fdc1895e91 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller: 1) More iov_iter conversion work from Al Viro. [ The "crypto: switch af_alg_make_sg() to iov_iter" commit was wrong, and this pull actually adds an extra commit on top of the branch I'm pulling to fix that up, so that the pre-merge state is ok. - Linus ] 2) Various optimizations to the ipv4 forwarding information base trie lookup implementation. From Alexander Duyck. 3) Remove sock_iocb altogether, from CHristoph Hellwig. 4) Allow congestion control algorithm selection via routing metrics. From Daniel Borkmann. 5) Make ipv4 uncached route list per-cpu, from Eric Dumazet. 6) Handle rfs hash collisions more gracefully, also from Eric Dumazet. 7) Add xmit_more support to r8169, e1000, and e1000e drivers. From Florian Westphal. 8) Transparent Ethernet Bridging support for GRO, from Jesse Gross. 9) Add BPF packet actions to packet scheduler, from Jiri Pirko. 10) Add support for uniqu flow IDs to openvswitch, from Joe Stringer. 11) New NetCP ethernet driver, from Muralidharan Karicheri and Wingman Kwok. 12) More sanely handle out-of-window dupacks, which can result in serious ACK storms. From Neal Cardwell. 13) Various rhashtable bug fixes and enhancements, from Herbert Xu, Patrick McHardy, and Thomas Graf. 14) Support xmit_more in be2net, from Sathya Perla. 15) Group Policy extensions for vxlan, from Thomas Graf. 16) Remove Checksum Offload support for vxlan, from Tom Herbert. 17) Like ipv4, support lockless transmit over ipv6 UDP sockets. From Vlad Yasevich. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1494+1 commits) crypto: fix af_alg_make_sg() conversion to iov_iter ipv4: Namespecify TCP PMTU mechanism i40e: Fix for stats init function call in Rx setup tcp: don't include Fast Open option in SYN-ACK on pure SYN-data openvswitch: Only set TUNNEL_VXLAN_OPT if VXLAN-GBP metadata is set ipv6: Make __ipv6_select_ident static ipv6: Fix fragment id assignment on LE arches. bridge: Fix inability to add non-vlan fdb entry net: Mellanox: Delete unnecessary checks before the function call "vunmap" cxgb4: Add support in cxgb4 to get expansion rom version via ethtool ethtool: rename reserved1 memeber in ethtool_drvinfo for expansion ROM version net: dsa: Remove redundant phy_attach() IB/mlx4: Reset flow support for IB kernel ULPs IB/mlx4: Always use the correct port for mirrored multicast attachments net/bonding: Fix potential bad memory access during bonding events tipc: remove tipc_snprintf tipc: nl compat add noop and remove legacy nl framework tipc: convert legacy nl stats show to nl compat tipc: convert legacy nl net id get to nl compat tipc: convert legacy nl net id set to nl compat ...
Diffstat (limited to 'net/tipc/bearer.c')
-rw-r--r--net/tipc/bearer.c205
1 files changed, 75 insertions, 130 deletions
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 463db5b15b8b..48852c2dcc03 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -34,11 +34,12 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
+#include <net/sock.h>
#include "core.h"
-#include "config.h"
#include "bearer.h"
#include "link.h"
#include "discover.h"
+#include "bcast.h"
#define MAX_ADDR_STR 60
@@ -67,9 +68,8 @@ static const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = {
[TIPC_NLA_MEDIA_PROP] = { .type = NLA_NESTED }
};
-struct tipc_bearer __rcu *bearer_list[MAX_BEARERS + 1];
-
-static void bearer_disable(struct tipc_bearer *b_ptr, bool shutting_down);
+static void bearer_disable(struct net *net, struct tipc_bearer *b_ptr,
+ bool shutting_down);
/**
* tipc_media_find - locates specified media object by name
@@ -111,38 +111,18 @@ void tipc_media_addr_printf(char *buf, int len, struct tipc_media_addr *a)
m_ptr = media_find_id(a->media_id);
if (m_ptr && !m_ptr->addr2str(a, addr_str, sizeof(addr_str)))
- ret = tipc_snprintf(buf, len, "%s(%s)", m_ptr->name, addr_str);
+ ret = scnprintf(buf, len, "%s(%s)", m_ptr->name, addr_str);
else {
u32 i;
- ret = tipc_snprintf(buf, len, "UNKNOWN(%u)", a->media_id);
+ ret = scnprintf(buf, len, "UNKNOWN(%u)", a->media_id);
for (i = 0; i < sizeof(a->value); i++)
- ret += tipc_snprintf(buf - ret, len + ret,
+ ret += scnprintf(buf - ret, len + ret,
"-%02x", a->value[i]);
}
}
/**
- * tipc_media_get_names - record names of registered media in buffer
- */
-struct sk_buff *tipc_media_get_names(void)
-{
- struct sk_buff *buf;
- int i;
-
- buf = tipc_cfg_reply_alloc(MAX_MEDIA * TLV_SPACE(TIPC_MAX_MEDIA_NAME));
- if (!buf)
- return NULL;
-
- for (i = 0; media_info_array[i] != NULL; i++) {
- tipc_cfg_append_tlv(buf, TIPC_TLV_MEDIA_NAME,
- media_info_array[i]->name,
- strlen(media_info_array[i]->name) + 1);
- }
- return buf;
-}
-
-/**
* bearer_name_validate - validate & (optionally) deconstruct bearer name
* @name: ptr to bearer name string
* @name_parts: ptr to area for bearer name components (or NULL if not needed)
@@ -190,68 +170,43 @@ static int bearer_name_validate(const char *name,
/**
* tipc_bearer_find - locates bearer object with matching bearer name
*/
-struct tipc_bearer *tipc_bearer_find(const char *name)
+struct tipc_bearer *tipc_bearer_find(struct net *net, const char *name)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_bearer *b_ptr;
u32 i;
for (i = 0; i < MAX_BEARERS; i++) {
- b_ptr = rtnl_dereference(bearer_list[i]);
+ b_ptr = rtnl_dereference(tn->bearer_list[i]);
if (b_ptr && (!strcmp(b_ptr->name, name)))
return b_ptr;
}
return NULL;
}
-/**
- * tipc_bearer_get_names - record names of bearers in buffer
- */
-struct sk_buff *tipc_bearer_get_names(void)
-{
- struct sk_buff *buf;
- struct tipc_bearer *b;
- int i, j;
-
- buf = tipc_cfg_reply_alloc(MAX_BEARERS * TLV_SPACE(TIPC_MAX_BEARER_NAME));
- if (!buf)
- return NULL;
-
- for (i = 0; media_info_array[i] != NULL; i++) {
- for (j = 0; j < MAX_BEARERS; j++) {
- b = rtnl_dereference(bearer_list[j]);
- if (!b)
- continue;
- if (b->media == media_info_array[i]) {
- tipc_cfg_append_tlv(buf, TIPC_TLV_BEARER_NAME,
- b->name,
- strlen(b->name) + 1);
- }
- }
- }
- return buf;
-}
-
-void tipc_bearer_add_dest(u32 bearer_id, u32 dest)
+void tipc_bearer_add_dest(struct net *net, u32 bearer_id, u32 dest)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_bearer *b_ptr;
rcu_read_lock();
- b_ptr = rcu_dereference_rtnl(bearer_list[bearer_id]);
+ b_ptr = rcu_dereference_rtnl(tn->bearer_list[bearer_id]);
if (b_ptr) {
- tipc_bcbearer_sort(&b_ptr->nodes, dest, true);
+ tipc_bcbearer_sort(net, &b_ptr->nodes, dest, true);
tipc_disc_add_dest(b_ptr->link_req);
}
rcu_read_unlock();
}
-void tipc_bearer_remove_dest(u32 bearer_id, u32 dest)
+void tipc_bearer_remove_dest(struct net *net, u32 bearer_id, u32 dest)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_bearer *b_ptr;
rcu_read_lock();
- b_ptr = rcu_dereference_rtnl(bearer_list[bearer_id]);
+ b_ptr = rcu_dereference_rtnl(tn->bearer_list[bearer_id]);
if (b_ptr) {
- tipc_bcbearer_sort(&b_ptr->nodes, dest, false);
+ tipc_bcbearer_sort(net, &b_ptr->nodes, dest, false);
tipc_disc_remove_dest(b_ptr->link_req);
}
rcu_read_unlock();
@@ -260,8 +215,10 @@ void tipc_bearer_remove_dest(u32 bearer_id, u32 dest)
/**
* tipc_enable_bearer - enable bearer with the given name
*/
-int tipc_enable_bearer(const char *name, u32 disc_domain, u32 priority)
+static int tipc_enable_bearer(struct net *net, const char *name,
+ u32 disc_domain, u32 priority)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_bearer *b_ptr;
struct tipc_media *m_ptr;
struct tipc_bearer_names b_names;
@@ -271,7 +228,7 @@ int tipc_enable_bearer(const char *name, u32 disc_domain, u32 priority)
u32 i;
int res = -EINVAL;
- if (!tipc_own_addr) {
+ if (!tn->own_addr) {
pr_warn("Bearer <%s> rejected, not supported in standalone mode\n",
name);
return -ENOPROTOOPT;
@@ -281,11 +238,11 @@ int tipc_enable_bearer(const char *name, u32 disc_domain, u32 priority)
return -EINVAL;
}
if (tipc_addr_domain_valid(disc_domain) &&
- (disc_domain != tipc_own_addr)) {
- if (tipc_in_scope(disc_domain, tipc_own_addr)) {
- disc_domain = tipc_own_addr & TIPC_CLUSTER_MASK;
+ (disc_domain != tn->own_addr)) {
+ if (tipc_in_scope(disc_domain, tn->own_addr)) {
+ disc_domain = tn->own_addr & TIPC_CLUSTER_MASK;
res = 0; /* accept any node in own cluster */
- } else if (in_own_cluster_exact(disc_domain))
+ } else if (in_own_cluster_exact(net, disc_domain))
res = 0; /* accept specified node in own cluster */
}
if (res) {
@@ -313,7 +270,7 @@ restart:
bearer_id = MAX_BEARERS;
with_this_prio = 1;
for (i = MAX_BEARERS; i-- != 0; ) {
- b_ptr = rtnl_dereference(bearer_list[i]);
+ b_ptr = rtnl_dereference(tn->bearer_list[i]);
if (!b_ptr) {
bearer_id = i;
continue;
@@ -347,7 +304,7 @@ restart:
strcpy(b_ptr->name, name);
b_ptr->media = m_ptr;
- res = m_ptr->enable_media(b_ptr);
+ res = m_ptr->enable_media(net, b_ptr);
if (res) {
pr_warn("Bearer <%s> rejected, enable failure (%d)\n",
name, -res);
@@ -361,15 +318,15 @@ restart:
b_ptr->net_plane = bearer_id + 'A';
b_ptr->priority = priority;
- res = tipc_disc_create(b_ptr, &b_ptr->bcast_addr);
+ res = tipc_disc_create(net, b_ptr, &b_ptr->bcast_addr);
if (res) {
- bearer_disable(b_ptr, false);
+ bearer_disable(net, b_ptr, false);
pr_warn("Bearer <%s> rejected, discovery object creation failed\n",
name);
return -EINVAL;
}
- rcu_assign_pointer(bearer_list[bearer_id], b_ptr);
+ rcu_assign_pointer(tn->bearer_list[bearer_id], b_ptr);
pr_info("Enabled bearer <%s>, discovery domain %s, priority %u\n",
name,
@@ -380,11 +337,11 @@ restart:
/**
* tipc_reset_bearer - Reset all links established over this bearer
*/
-static int tipc_reset_bearer(struct tipc_bearer *b_ptr)
+static int tipc_reset_bearer(struct net *net, struct tipc_bearer *b_ptr)
{
pr_info("Resetting bearer <%s>\n", b_ptr->name);
- tipc_link_reset_list(b_ptr->identity);
- tipc_disc_reset(b_ptr);
+ tipc_link_reset_list(net, b_ptr->identity);
+ tipc_disc_reset(net, b_ptr);
return 0;
}
@@ -393,49 +350,35 @@ static int tipc_reset_bearer(struct tipc_bearer *b_ptr)
*
* Note: This routine assumes caller holds RTNL lock.
*/
-static void bearer_disable(struct tipc_bearer *b_ptr, bool shutting_down)
+static void bearer_disable(struct net *net, struct tipc_bearer *b_ptr,
+ bool shutting_down)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
u32 i;
pr_info("Disabling bearer <%s>\n", b_ptr->name);
b_ptr->media->disable_media(b_ptr);
- tipc_link_delete_list(b_ptr->identity, shutting_down);
+ tipc_link_delete_list(net, b_ptr->identity, shutting_down);
if (b_ptr->link_req)
tipc_disc_delete(b_ptr->link_req);
for (i = 0; i < MAX_BEARERS; i++) {
- if (b_ptr == rtnl_dereference(bearer_list[i])) {
- RCU_INIT_POINTER(bearer_list[i], NULL);
+ if (b_ptr == rtnl_dereference(tn->bearer_list[i])) {
+ RCU_INIT_POINTER(tn->bearer_list[i], NULL);
break;
}
}
kfree_rcu(b_ptr, rcu);
}
-int tipc_disable_bearer(const char *name)
-{
- struct tipc_bearer *b_ptr;
- int res;
-
- b_ptr = tipc_bearer_find(name);
- if (b_ptr == NULL) {
- pr_warn("Attempt to disable unknown bearer <%s>\n", name);
- res = -EINVAL;
- } else {
- bearer_disable(b_ptr, false);
- res = 0;
- }
- return res;
-}
-
-int tipc_enable_l2_media(struct tipc_bearer *b)
+int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b)
{
struct net_device *dev;
char *driver_name = strchr((const char *)b->name, ':') + 1;
/* Find device with specified name */
- dev = dev_get_by_name(&init_net, driver_name);
+ dev = dev_get_by_name(net, driver_name);
if (!dev)
return -ENODEV;
@@ -474,8 +417,8 @@ void tipc_disable_l2_media(struct tipc_bearer *b)
* @b_ptr: the bearer through which the packet is to be sent
* @dest: peer destination address
*/
-int tipc_l2_send_msg(struct sk_buff *buf, struct tipc_bearer *b,
- struct tipc_media_addr *dest)
+int tipc_l2_send_msg(struct net *net, struct sk_buff *buf,
+ struct tipc_bearer *b, struct tipc_media_addr *dest)
{
struct sk_buff *clone;
struct net_device *dev;
@@ -511,15 +454,16 @@ int tipc_l2_send_msg(struct sk_buff *buf, struct tipc_bearer *b,
* The media send routine must not alter the buffer being passed in
* as it may be needed for later retransmission!
*/
-void tipc_bearer_send(u32 bearer_id, struct sk_buff *buf,
+void tipc_bearer_send(struct net *net, u32 bearer_id, struct sk_buff *buf,
struct tipc_media_addr *dest)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_bearer *b_ptr;
rcu_read_lock();
- b_ptr = rcu_dereference_rtnl(bearer_list[bearer_id]);
+ b_ptr = rcu_dereference_rtnl(tn->bearer_list[bearer_id]);
if (likely(b_ptr))
- b_ptr->media->send_msg(buf, b_ptr, dest);
+ b_ptr->media->send_msg(net, buf, b_ptr, dest);
rcu_read_unlock();
}
@@ -539,17 +483,12 @@ static int tipc_l2_rcv_msg(struct sk_buff *buf, struct net_device *dev,
{
struct tipc_bearer *b_ptr;
- if (!net_eq(dev_net(dev), &init_net)) {
- kfree_skb(buf);
- return NET_RX_DROP;
- }
-
rcu_read_lock();
b_ptr = rcu_dereference_rtnl(dev->tipc_ptr);
if (likely(b_ptr)) {
if (likely(buf->pkt_type <= PACKET_BROADCAST)) {
buf->next = NULL;
- tipc_rcv(buf, b_ptr);
+ tipc_rcv(dev_net(dev), buf, b_ptr);
rcu_read_unlock();
return NET_RX_SUCCESS;
}
@@ -572,11 +511,9 @@ static int tipc_l2_rcv_msg(struct sk_buff *buf, struct net_device *dev,
static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt,
void *ptr)
{
- struct tipc_bearer *b_ptr;
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
-
- if (!net_eq(dev_net(dev), &init_net))
- return NOTIFY_DONE;
+ struct net *net = dev_net(dev);
+ struct tipc_bearer *b_ptr;
b_ptr = rtnl_dereference(dev->tipc_ptr);
if (!b_ptr)
@@ -590,16 +527,16 @@ static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt,
break;
case NETDEV_DOWN:
case NETDEV_CHANGEMTU:
- tipc_reset_bearer(b_ptr);
+ tipc_reset_bearer(net, b_ptr);
break;
case NETDEV_CHANGEADDR:
b_ptr->media->raw2addr(b_ptr, &b_ptr->addr,
(char *)dev->dev_addr);
- tipc_reset_bearer(b_ptr);
+ tipc_reset_bearer(net, b_ptr);
break;
case NETDEV_UNREGISTER:
case NETDEV_CHANGENAME:
- bearer_disable(b_ptr, false);
+ bearer_disable(dev_net(dev), b_ptr, false);
break;
}
return NOTIFY_OK;
@@ -632,16 +569,17 @@ void tipc_bearer_cleanup(void)
dev_remove_pack(&tipc_packet_type);
}
-void tipc_bearer_stop(void)
+void tipc_bearer_stop(struct net *net)
{
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_bearer *b_ptr;
u32 i;
for (i = 0; i < MAX_BEARERS; i++) {
- b_ptr = rtnl_dereference(bearer_list[i]);
+ b_ptr = rtnl_dereference(tn->bearer_list[i]);
if (b_ptr) {
- bearer_disable(b_ptr, true);
- bearer_list[i] = NULL;
+ bearer_disable(net, b_ptr, true);
+ tn->bearer_list[i] = NULL;
}
}
}
@@ -654,7 +592,7 @@ static int __tipc_nl_add_bearer(struct tipc_nl_msg *msg,
struct nlattr *attrs;
struct nlattr *prop;
- hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_v2_family,
+ hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family,
NLM_F_MULTI, TIPC_NL_BEARER_GET);
if (!hdr)
return -EMSGSIZE;
@@ -698,6 +636,8 @@ int tipc_nl_bearer_dump(struct sk_buff *skb, struct netlink_callback *cb)
int i = cb->args[0];
struct tipc_bearer *bearer;
struct tipc_nl_msg msg;
+ struct net *net = sock_net(skb->sk);
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
if (i == MAX_BEARERS)
return 0;
@@ -708,7 +648,7 @@ int tipc_nl_bearer_dump(struct sk_buff *skb, struct netlink_callback *cb)
rtnl_lock();
for (i = 0; i < MAX_BEARERS; i++) {
- bearer = rtnl_dereference(bearer_list[i]);
+ bearer = rtnl_dereference(tn->bearer_list[i]);
if (!bearer)
continue;
@@ -730,6 +670,7 @@ int tipc_nl_bearer_get(struct sk_buff *skb, struct genl_info *info)
struct tipc_bearer *bearer;
struct tipc_nl_msg msg;
struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+ struct net *net = genl_info_net(info);
if (!info->attrs[TIPC_NLA_BEARER])
return -EINVAL;
@@ -753,7 +694,7 @@ int tipc_nl_bearer_get(struct sk_buff *skb, struct genl_info *info)
msg.seq = info->snd_seq;
rtnl_lock();
- bearer = tipc_bearer_find(name);
+ bearer = tipc_bearer_find(net, name);
if (!bearer) {
err = -EINVAL;
goto err_out;
@@ -778,6 +719,7 @@ int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info)
char *name;
struct tipc_bearer *bearer;
struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+ struct net *net = sock_net(skb->sk);
if (!info->attrs[TIPC_NLA_BEARER])
return -EINVAL;
@@ -794,13 +736,13 @@ int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info)
name = nla_data(attrs[TIPC_NLA_BEARER_NAME]);
rtnl_lock();
- bearer = tipc_bearer_find(name);
+ bearer = tipc_bearer_find(net, name);
if (!bearer) {
rtnl_unlock();
return -EINVAL;
}
- bearer_disable(bearer, false);
+ bearer_disable(net, bearer, false);
rtnl_unlock();
return 0;
@@ -811,11 +753,13 @@ int tipc_nl_bearer_enable(struct sk_buff *skb, struct genl_info *info)
int err;
char *bearer;
struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+ struct net *net = sock_net(skb->sk);
+ struct tipc_net *tn = net_generic(net, tipc_net_id);
u32 domain;
u32 prio;
prio = TIPC_MEDIA_LINK_PRI;
- domain = tipc_own_addr & TIPC_CLUSTER_MASK;
+ domain = tn->own_addr & TIPC_CLUSTER_MASK;
if (!info->attrs[TIPC_NLA_BEARER])
return -EINVAL;
@@ -847,7 +791,7 @@ int tipc_nl_bearer_enable(struct sk_buff *skb, struct genl_info *info)
}
rtnl_lock();
- err = tipc_enable_bearer(bearer, domain, prio);
+ err = tipc_enable_bearer(net, bearer, domain, prio);
if (err) {
rtnl_unlock();
return err;
@@ -863,6 +807,7 @@ int tipc_nl_bearer_set(struct sk_buff *skb, struct genl_info *info)
char *name;
struct tipc_bearer *b;
struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1];
+ struct net *net = genl_info_net(info);
if (!info->attrs[TIPC_NLA_BEARER])
return -EINVAL;
@@ -878,7 +823,7 @@ int tipc_nl_bearer_set(struct sk_buff *skb, struct genl_info *info)
name = nla_data(attrs[TIPC_NLA_BEARER_NAME]);
rtnl_lock();
- b = tipc_bearer_find(name);
+ b = tipc_bearer_find(net, name);
if (!b) {
rtnl_unlock();
return -EINVAL;
@@ -913,7 +858,7 @@ static int __tipc_nl_add_media(struct tipc_nl_msg *msg,
struct nlattr *attrs;
struct nlattr *prop;
- hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_v2_family,
+ hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family,
NLM_F_MULTI, TIPC_NL_MEDIA_GET);
if (!hdr)
return -EMSGSIZE;