The following commit has been merged in the master branch:
commit 6ecc4fd6c2f43862c5e3b280cf419f0131e45c97
Author: Linus Lüssing <linus.luessing(a)c0d3.blue>
Date: Mon Jan 13 20:31:39 2025 +0100
batman-adv: netlink: reduce duplicate code by returning interfaces
Reduce duplicate code by using netlink helpers which return the
soft/hard interface directly. Instead of returning an interface index
which we are typically not interested in.
Signed-off-by: Linus Lüssing <linus.luessing(a)c0d3.blue>
Signed-off-by: Sven Eckelmann <sven(a)narfation.org>
Signed-off-by: Simon Wunderlich <sw(a)simonwunderlich.de>
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 449faf5a54874..8c814f790d177 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -12,6 +12,7 @@
#include <linux/compiler.h>
#include <linux/container_of.h>
#include <linux/crc16.h>
+#include <linux/err.h>
#include <linux/errno.h>
#include <linux/etherdevice.h>
#include <linux/gfp.h>
@@ -38,7 +39,6 @@
#include <net/arp.h>
#include <net/genetlink.h>
#include <net/netlink.h>
-#include <net/sock.h>
#include <uapi/linux/batadv_packet.h>
#include <uapi/linux/batman_adv.h>
@@ -47,7 +47,6 @@
#include "log.h"
#include "netlink.h"
#include "originator.h"
-#include "soft-interface.h"
#include "translation-table.h"
static const u8 batadv_announce_mac[4] = {0x43, 0x05, 0x43, 0x05};
@@ -2233,25 +2232,16 @@ int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb)
{
struct batadv_hard_iface *primary_if = NULL;
int portid = NETLINK_CB(cb->skb).portid;
- struct net *net = sock_net(cb->skb->sk);
struct net_device *soft_iface;
struct batadv_hashtable *hash;
struct batadv_priv *bat_priv;
int bucket = cb->args[0];
int idx = cb->args[1];
- int ifindex;
int ret = 0;
- ifindex = batadv_netlink_get_ifindex(cb->nlh,
- BATADV_ATTR_MESH_IFINDEX);
- if (!ifindex)
- return -EINVAL;
-
- soft_iface = dev_get_by_index(net, ifindex);
- if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
- ret = -ENODEV;
- goto out;
- }
+ soft_iface = batadv_netlink_get_softif(cb);
+ if (IS_ERR(soft_iface))
+ return PTR_ERR(soft_iface);
bat_priv = netdev_priv(soft_iface);
hash = bat_priv->bla.claim_hash;
@@ -2403,25 +2393,16 @@ int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb)
{
struct batadv_hard_iface *primary_if = NULL;
int portid = NETLINK_CB(cb->skb).portid;
- struct net *net = sock_net(cb->skb->sk);
struct net_device *soft_iface;
struct batadv_hashtable *hash;
struct batadv_priv *bat_priv;
int bucket = cb->args[0];
int idx = cb->args[1];
- int ifindex;
int ret = 0;
- ifindex = batadv_netlink_get_ifindex(cb->nlh,
- BATADV_ATTR_MESH_IFINDEX);
- if (!ifindex)
- return -EINVAL;
-
- soft_iface = dev_get_by_index(net, ifindex);
- if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
- ret = -ENODEV;
- goto out;
- }
+ soft_iface = batadv_netlink_get_softif(cb);
+ if (IS_ERR(soft_iface))
+ return PTR_ERR(soft_iface);
bat_priv = netdev_priv(soft_iface);
hash = bat_priv->bla.backbone_hash;
diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index 48b72c2be0980..e5a07152d4ecf 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -11,6 +11,7 @@
#include <linux/bitops.h>
#include <linux/byteorder/generic.h>
#include <linux/container_of.h>
+#include <linux/err.h>
#include <linux/errno.h>
#include <linux/etherdevice.h>
#include <linux/gfp.h>
@@ -36,7 +37,6 @@
#include <net/arp.h>
#include <net/genetlink.h>
#include <net/netlink.h>
-#include <net/sock.h>
#include <uapi/linux/batman_adv.h>
#include "bridge_loop_avoidance.h"
@@ -46,7 +46,6 @@
#include "netlink.h"
#include "originator.h"
#include "send.h"
-#include "soft-interface.h"
#include "translation-table.h"
#include "tvlv.h"
@@ -937,25 +936,16 @@ int batadv_dat_cache_dump(struct sk_buff *msg, struct netlink_callback *cb)
{
struct batadv_hard_iface *primary_if = NULL;
int portid = NETLINK_CB(cb->skb).portid;
- struct net *net = sock_net(cb->skb->sk);
struct net_device *soft_iface;
struct batadv_hashtable *hash;
struct batadv_priv *bat_priv;
int bucket = cb->args[0];
int idx = cb->args[1];
- int ifindex;
int ret = 0;
- ifindex = batadv_netlink_get_ifindex(cb->nlh,
- BATADV_ATTR_MESH_IFINDEX);
- if (!ifindex)
- return -EINVAL;
-
- soft_iface = dev_get_by_index(net, ifindex);
- if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
- ret = -ENODEV;
- goto out;
- }
+ soft_iface = batadv_netlink_get_softif(cb);
+ if (IS_ERR(soft_iface))
+ return PTR_ERR(soft_iface);
bat_priv = netdev_priv(soft_iface);
hash = bat_priv->dat.hash;
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index 0ddd8b4b3f4cf..f68e34ed1f627 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -10,6 +10,7 @@
#include <linux/atomic.h>
#include <linux/byteorder/generic.h>
#include <linux/container_of.h>
+#include <linux/err.h>
#include <linux/errno.h>
#include <linux/etherdevice.h>
#include <linux/gfp.h>
@@ -31,7 +32,6 @@
#include <linux/sprintf.h>
#include <linux/stddef.h>
#include <linux/udp.h>
-#include <net/sock.h>
#include <uapi/linux/batadv_packet.h>
#include <uapi/linux/batman_adv.h>
@@ -40,7 +40,6 @@
#include "netlink.h"
#include "originator.h"
#include "routing.h"
-#include "soft-interface.h"
#include "translation-table.h"
/* These are the offsets of the "hw type" and "hw address length" in the dhcp
@@ -502,22 +501,13 @@ void batadv_gw_node_free(struct batadv_priv *bat_priv)
int batadv_gw_dump(struct sk_buff *msg, struct netlink_callback *cb)
{
struct batadv_hard_iface *primary_if = NULL;
- struct net *net = sock_net(cb->skb->sk);
struct net_device *soft_iface;
struct batadv_priv *bat_priv;
- int ifindex;
int ret;
- ifindex = batadv_netlink_get_ifindex(cb->nlh,
- BATADV_ATTR_MESH_IFINDEX);
- if (!ifindex)
- return -EINVAL;
-
- soft_iface = dev_get_by_index(net, ifindex);
- if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
- ret = -ENODEV;
- goto out;
- }
+ soft_iface = batadv_netlink_get_softif(cb);
+ if (IS_ERR(soft_iface))
+ return PTR_ERR(soft_iface);
bat_priv = netdev_priv(soft_iface);
diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c
index 14088c4ff2f66..d95c418484fa2 100644
--- a/net/batman-adv/multicast.c
+++ b/net/batman-adv/multicast.c
@@ -12,6 +12,7 @@
#include <linux/bug.h>
#include <linux/byteorder/generic.h>
#include <linux/container_of.h>
+#include <linux/err.h>
#include <linux/errno.h>
#include <linux/etherdevice.h>
#include <linux/gfp.h>
@@ -46,7 +47,6 @@
#include <net/ip.h>
#include <net/ipv6.h>
#include <net/netlink.h>
-#include <net/sock.h>
#include <uapi/linux/batadv_packet.h>
#include <uapi/linux/batman_adv.h>
@@ -56,7 +56,6 @@
#include "log.h"
#include "netlink.h"
#include "send.h"
-#include "soft-interface.h"
#include "translation-table.h"
#include "tvlv.h"
@@ -2104,21 +2103,13 @@ batadv_mcast_netlink_get_primary(struct netlink_callback *cb,
struct batadv_hard_iface **primary_if)
{
struct batadv_hard_iface *hard_iface = NULL;
- struct net *net = sock_net(cb->skb->sk);
struct net_device *soft_iface;
struct batadv_priv *bat_priv;
- int ifindex;
int ret = 0;
- ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX);
- if (!ifindex)
- return -EINVAL;
-
- soft_iface = dev_get_by_index(net, ifindex);
- if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
- ret = -ENODEV;
- goto out;
- }
+ soft_iface = batadv_netlink_get_softif(cb);
+ if (IS_ERR(soft_iface))
+ return PTR_ERR(soft_iface);
bat_priv = netdev_priv(soft_iface);
diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c
index 9362cd9d6f3d3..eefba5600ded3 100644
--- a/net/batman-adv/netlink.c
+++ b/net/batman-adv/netlink.c
@@ -158,8 +158,7 @@ static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
*
* Return: interface index, or 0.
*/
-int
-batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype)
+static int batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype)
{
struct nlattr *attr = nlmsg_find_attr(nlh, GENL_HDRLEN, attrtype);
@@ -881,14 +880,14 @@ static int batadv_netlink_notify_hardif(struct batadv_priv *bat_priv,
}
/**
- * batadv_netlink_get_hardif() - Get hardif attributes
+ * batadv_netlink_cmd_get_hardif() - Get hardif attributes
* @skb: Netlink message with request data
* @info: receiver information
*
* Return: 0 on success or negative error number in case of failure
*/
-static int batadv_netlink_get_hardif(struct sk_buff *skb,
- struct genl_info *info)
+static int batadv_netlink_cmd_get_hardif(struct sk_buff *skb,
+ struct genl_info *info)
{
struct batadv_hard_iface *hard_iface = info->user_ptr[1];
struct batadv_priv *bat_priv = info->user_ptr[0];
@@ -964,28 +963,16 @@ static int batadv_netlink_set_hardif(struct sk_buff *skb,
static int
batadv_netlink_dump_hardif(struct sk_buff *msg, struct netlink_callback *cb)
{
- struct net *net = sock_net(cb->skb->sk);
struct net_device *soft_iface;
struct batadv_hard_iface *hard_iface;
struct batadv_priv *bat_priv;
- int ifindex;
int portid = NETLINK_CB(cb->skb).portid;
int skip = cb->args[0];
int i = 0;
- ifindex = batadv_netlink_get_ifindex(cb->nlh,
- BATADV_ATTR_MESH_IFINDEX);
- if (!ifindex)
- return -EINVAL;
-
- soft_iface = dev_get_by_index(net, ifindex);
- if (!soft_iface)
- return -ENODEV;
-
- if (!batadv_softif_is_valid(soft_iface)) {
- dev_put(soft_iface);
- return -ENODEV;
- }
+ soft_iface = batadv_netlink_get_softif(cb);
+ if (IS_ERR(soft_iface))
+ return PTR_ERR(soft_iface);
bat_priv = netdev_priv(soft_iface);
@@ -1150,23 +1137,17 @@ static int batadv_netlink_set_vlan(struct sk_buff *skb, struct genl_info *info)
}
/**
- * batadv_get_softif_from_info() - Retrieve soft interface from genl attributes
+ * batadv_netlink_get_softif_from_ifindex() - Get soft-iface from ifindex
* @net: the applicable net namespace
- * @info: receiver information
+ * @ifindex: index of the soft interface
*
* Return: Pointer to soft interface (with increased refcnt) on success, error
* pointer on error
*/
static struct net_device *
-batadv_get_softif_from_info(struct net *net, struct genl_info *info)
+batadv_netlink_get_softif_from_ifindex(struct net *net, int ifindex)
{
struct net_device *soft_iface;
- int ifindex;
-
- if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
- return ERR_PTR(-EINVAL);
-
- ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
soft_iface = dev_get_by_index(net, ifindex);
if (!soft_iface)
@@ -1184,28 +1165,61 @@ err_put_softif:
}
/**
- * batadv_get_hardif_from_info() - Retrieve hardif from genl attributes
- * @bat_priv: the bat priv with all the soft interface information
+ * batadv_netlink_get_softif_from_info() - Get soft-iface from genl attributes
* @net: the applicable net namespace
* @info: receiver information
*
+ * Return: Pointer to soft interface (with increased refcnt) on success, error
+ * pointer on error
+ */
+static struct net_device *
+batadv_netlink_get_softif_from_info(struct net *net, struct genl_info *info)
+{
+ int ifindex;
+
+ if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
+ return ERR_PTR(-EINVAL);
+
+ ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
+
+ return batadv_netlink_get_softif_from_ifindex(net, ifindex);
+}
+
+/**
+ * batadv_netlink_get_softif() - Retrieve soft interface from netlink callback
+ * @cb: callback structure containing arguments
+ *
+ * Return: Pointer to soft interface (with increased refcnt) on success, error
+ * pointer on error
+ */
+struct net_device *batadv_netlink_get_softif(struct netlink_callback *cb)
+{
+ int ifindex = batadv_netlink_get_ifindex(cb->nlh,
+ BATADV_ATTR_MESH_IFINDEX);
+ if (!ifindex)
+ return ERR_PTR(-ENONET);
+
+ return batadv_netlink_get_softif_from_ifindex(sock_net(cb->skb->sk),
+ ifindex);
+}
+
+/**
+ * batadv_netlink_get_hardif_from_ifindex() - Get hard-iface from ifindex
+ * @bat_priv: the bat priv with all the soft interface information
+ * @net: the applicable net namespace
+ * @ifindex: index of the hard interface
+ *
* Return: Pointer to hard interface (with increased refcnt) on success, error
* pointer on error
*/
static struct batadv_hard_iface *
-batadv_get_hardif_from_info(struct batadv_priv *bat_priv, struct net *net,
- struct genl_info *info)
+batadv_netlink_get_hardif_from_ifindex(struct batadv_priv *bat_priv,
+ struct net *net, int ifindex)
{
struct batadv_hard_iface *hard_iface;
struct net_device *hard_dev;
- unsigned int hardif_index;
-
- if (!info->attrs[BATADV_ATTR_HARD_IFINDEX])
- return ERR_PTR(-EINVAL);
-
- hardif_index = nla_get_u32(info->attrs[BATADV_ATTR_HARD_IFINDEX]);
- hard_dev = dev_get_by_index(net, hardif_index);
+ hard_dev = dev_get_by_index(net, ifindex);
if (!hard_dev)
return ERR_PTR(-ENODEV);
@@ -1229,6 +1243,51 @@ err_put_harddev:
return ERR_PTR(-EINVAL);
}
+/**
+ * batadv_netlink_get_hardif_from_info() - Get hard-iface from genl attributes
+ * @bat_priv: the bat priv with all the soft interface information
+ * @net: the applicable net namespace
+ * @info: receiver information
+ *
+ * Return: Pointer to hard interface (with increased refcnt) on success, error
+ * pointer on error
+ */
+static struct batadv_hard_iface *
+batadv_netlink_get_hardif_from_info(struct batadv_priv *bat_priv,
+ struct net *net, struct genl_info *info)
+{
+ int ifindex;
+
+ if (!info->attrs[BATADV_ATTR_HARD_IFINDEX])
+ return ERR_PTR(-EINVAL);
+
+ ifindex = nla_get_u32(info->attrs[BATADV_ATTR_HARD_IFINDEX]);
+
+ return batadv_netlink_get_hardif_from_ifindex(bat_priv, net, ifindex);
+}
+
+/**
+ * batadv_netlink_get_hardif() - Retrieve hard interface from netlink callback
+ * @bat_priv: the bat priv with all the soft interface information
+ * @cb: callback structure containing arguments
+ *
+ * Return: Pointer to hard interface (with increased refcnt) on success, error
+ * pointer on error
+ */
+struct batadv_hard_iface *
+batadv_netlink_get_hardif(struct batadv_priv *bat_priv,
+ struct netlink_callback *cb)
+{
+ int ifindex = batadv_netlink_get_ifindex(cb->nlh,
+ BATADV_ATTR_HARD_IFINDEX);
+ if (!ifindex)
+ return ERR_PTR(-ENONET);
+
+ return batadv_netlink_get_hardif_from_ifindex(bat_priv,
+ sock_net(cb->skb->sk),
+ ifindex);
+}
+
/**
* batadv_get_vlan_from_info() - Retrieve vlan from genl attributes
* @bat_priv: the bat priv with all the soft interface information
@@ -1288,7 +1347,7 @@ static int batadv_pre_doit(const struct genl_split_ops *ops,
return -EINVAL;
if (ops->internal_flags & BATADV_FLAG_NEED_MESH) {
- soft_iface = batadv_get_softif_from_info(net, info);
+ soft_iface = batadv_netlink_get_softif_from_info(net, info);
if (IS_ERR(soft_iface))
return PTR_ERR(soft_iface);
@@ -1297,7 +1356,8 @@ static int batadv_pre_doit(const struct genl_split_ops *ops,
}
if (ops->internal_flags & BATADV_FLAG_NEED_HARDIF) {
- hard_iface = batadv_get_hardif_from_info(bat_priv, net, info);
+ hard_iface = batadv_netlink_get_hardif_from_info(bat_priv, net,
+ info);
if (IS_ERR(hard_iface)) {
ret = PTR_ERR(hard_iface);
goto err_put_softif;
@@ -1390,7 +1450,7 @@ static const struct genl_small_ops batadv_netlink_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
/* can be retrieved by unprivileged users */
.dumpit = batadv_netlink_dump_hardif,
- .doit = batadv_netlink_get_hardif,
+ .doit = batadv_netlink_cmd_get_hardif,
.internal_flags = BATADV_FLAG_NEED_MESH |
BATADV_FLAG_NEED_HARDIF,
},
diff --git a/net/batman-adv/netlink.h b/net/batman-adv/netlink.h
index 876d2806a67d2..2097c2ae98f16 100644
--- a/net/batman-adv/netlink.h
+++ b/net/batman-adv/netlink.h
@@ -15,7 +15,10 @@
void batadv_netlink_register(void);
void batadv_netlink_unregister(void);
-int batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype);
+struct net_device *batadv_netlink_get_softif(struct netlink_callback *cb);
+struct batadv_hard_iface *
+batadv_netlink_get_hardif(struct batadv_priv *bat_priv,
+ struct netlink_callback *cb);
int batadv_netlink_tpmeter_notify(struct batadv_priv *bat_priv, const u8 *dst,
u8 result, u32 test_time, u64 total_bytes,
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 8f6dd2c6ee41d..bcc2e20e0cd6c 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -9,6 +9,7 @@
#include <linux/atomic.h>
#include <linux/container_of.h>
+#include <linux/err.h>
#include <linux/errno.h>
#include <linux/etherdevice.h>
#include <linux/gfp.h>
@@ -26,9 +27,7 @@
#include <linux/spinlock.h>
#include <linux/stddef.h>
#include <linux/workqueue.h>
-#include <net/sock.h>
#include <uapi/linux/batadv_packet.h>
-#include <uapi/linux/batman_adv.h>
#include "bat_algo.h"
#include "distributed-arp-table.h"
@@ -41,7 +40,6 @@
#include "netlink.h"
#include "network-coding.h"
#include "routing.h"
-#include "soft-interface.h"
#include "translation-table.h"
/* hash class keys */
@@ -755,64 +753,48 @@ batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node,
*/
int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb)
{
- struct net *net = sock_net(cb->skb->sk);
+ struct batadv_hard_iface *primary_if, *hard_iface;
struct net_device *soft_iface;
- struct net_device *hard_iface = NULL;
- struct batadv_hard_iface *hardif = BATADV_IF_DEFAULT;
struct batadv_priv *bat_priv;
- struct batadv_hard_iface *primary_if = NULL;
int ret;
- int ifindex, hard_ifindex;
- ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX);
- if (!ifindex)
- return -EINVAL;
-
- soft_iface = dev_get_by_index(net, ifindex);
- if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
- ret = -ENODEV;
- goto out;
- }
+ soft_iface = batadv_netlink_get_softif(cb);
+ if (IS_ERR(soft_iface))
+ return PTR_ERR(soft_iface);
bat_priv = netdev_priv(soft_iface);
primary_if = batadv_primary_if_get_selected(bat_priv);
if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) {
ret = -ENOENT;
- goto out;
+ goto out_put_soft_iface;
}
- hard_ifindex = batadv_netlink_get_ifindex(cb->nlh,
- BATADV_ATTR_HARD_IFINDEX);
- if (hard_ifindex) {
- hard_iface = dev_get_by_index(net, hard_ifindex);
- if (hard_iface)
- hardif = batadv_hardif_get_by_netdev(hard_iface);
-
- if (!hardif) {
- ret = -ENODEV;
- goto out;
- }
-
- if (hardif->soft_iface != soft_iface) {
- ret = -ENOENT;
- goto out;
- }
+ hard_iface = batadv_netlink_get_hardif(bat_priv, cb);
+ if (IS_ERR(hard_iface) && PTR_ERR(hard_iface) != -ENONET) {
+ ret = PTR_ERR(hard_iface);
+ goto out_put_primary_if;
+ } else if (IS_ERR(hard_iface)) {
+ /* => PTR_ERR(hard_iface) == -ENONET
+ * => no hard-iface given, ok
+ */
+ hard_iface = BATADV_IF_DEFAULT;
}
if (!bat_priv->algo_ops->neigh.dump) {
ret = -EOPNOTSUPP;
- goto out;
+ goto out_put_hard_iface;
}
- bat_priv->algo_ops->neigh.dump(msg, cb, bat_priv, hardif);
+ bat_priv->algo_ops->neigh.dump(msg, cb, bat_priv, hard_iface);
ret = msg->len;
- out:
- batadv_hardif_put(hardif);
- dev_put(hard_iface);
+out_put_hard_iface:
+ batadv_hardif_put(hard_iface);
+out_put_primary_if:
batadv_hardif_put(primary_if);
+out_put_soft_iface:
dev_put(soft_iface);
return ret;
@@ -1342,64 +1324,48 @@ static void batadv_purge_orig(struct work_struct *work)
*/
int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb)
{
- struct net *net = sock_net(cb->skb->sk);
+ struct batadv_hard_iface *primary_if, *hard_iface;
struct net_device *soft_iface;
- struct net_device *hard_iface = NULL;
- struct batadv_hard_iface *hardif = BATADV_IF_DEFAULT;
struct batadv_priv *bat_priv;
- struct batadv_hard_iface *primary_if = NULL;
int ret;
- int ifindex, hard_ifindex;
- ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX);
- if (!ifindex)
- return -EINVAL;
-
- soft_iface = dev_get_by_index(net, ifindex);
- if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
- ret = -ENODEV;
- goto out;
- }
+ soft_iface = batadv_netlink_get_softif(cb);
+ if (IS_ERR(soft_iface))
+ return PTR_ERR(soft_iface);
bat_priv = netdev_priv(soft_iface);
primary_if = batadv_primary_if_get_selected(bat_priv);
if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) {
ret = -ENOENT;
- goto out;
+ goto out_put_soft_iface;
}
- hard_ifindex = batadv_netlink_get_ifindex(cb->nlh,
- BATADV_ATTR_HARD_IFINDEX);
- if (hard_ifindex) {
- hard_iface = dev_get_by_index(net, hard_ifindex);
- if (hard_iface)
- hardif = batadv_hardif_get_by_netdev(hard_iface);
-
- if (!hardif) {
- ret = -ENODEV;
- goto out;
- }
-
- if (hardif->soft_iface != soft_iface) {
- ret = -ENOENT;
- goto out;
- }
+ hard_iface = batadv_netlink_get_hardif(bat_priv, cb);
+ if (IS_ERR(hard_iface) && PTR_ERR(hard_iface) != -ENONET) {
+ ret = PTR_ERR(hard_iface);
+ goto out_put_primary_if;
+ } else if (IS_ERR(hard_iface)) {
+ /* => PTR_ERR(hard_iface) == -ENONET
+ * => no hard-iface given, ok
+ */
+ hard_iface = BATADV_IF_DEFAULT;
}
if (!bat_priv->algo_ops->orig.dump) {
ret = -EOPNOTSUPP;
- goto out;
+ goto out_put_hard_iface;
}
- bat_priv->algo_ops->orig.dump(msg, cb, bat_priv, hardif);
+ bat_priv->algo_ops->orig.dump(msg, cb, bat_priv, hard_iface);
ret = msg->len;
- out:
- batadv_hardif_put(hardif);
- dev_put(hard_iface);
+out_put_hard_iface:
+ batadv_hardif_put(hard_iface);
+out_put_primary_if:
batadv_hardif_put(primary_if);
+out_put_soft_iface:
dev_put(soft_iface);
return ret;
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 76d5517bb5073..2bc3407f38b29 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -15,6 +15,7 @@
#include <linux/compiler.h>
#include <linux/container_of.h>
#include <linux/crc32c.h>
+#include <linux/err.h>
#include <linux/errno.h>
#include <linux/etherdevice.h>
#include <linux/gfp.h>
@@ -39,7 +40,6 @@
#include <linux/workqueue.h>
#include <net/genetlink.h>
#include <net/netlink.h>
-#include <net/sock.h>
#include <uapi/linux/batadv_packet.h>
#include <uapi/linux/batman_adv.h>
@@ -1115,26 +1115,18 @@ batadv_tt_local_dump_bucket(struct sk_buff *msg, u32 portid,
*/
int batadv_tt_local_dump(struct sk_buff *msg, struct netlink_callback *cb)
{
- struct net *net = sock_net(cb->skb->sk);
struct net_device *soft_iface;
struct batadv_priv *bat_priv;
struct batadv_hard_iface *primary_if = NULL;
struct batadv_hashtable *hash;
int ret;
- int ifindex;
int bucket = cb->args[0];
int idx = cb->args[1];
int portid = NETLINK_CB(cb->skb).portid;
- ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX);
- if (!ifindex)
- return -EINVAL;
-
- soft_iface = dev_get_by_index(net, ifindex);
- if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
- ret = -ENODEV;
- goto out;
- }
+ soft_iface = batadv_netlink_get_softif(cb);
+ if (IS_ERR(soft_iface))
+ return PTR_ERR(soft_iface);
bat_priv = netdev_priv(soft_iface);
@@ -1890,28 +1882,20 @@ batadv_tt_global_dump_bucket(struct sk_buff *msg, u32 portid, u32 seq,
*/
int batadv_tt_global_dump(struct sk_buff *msg, struct netlink_callback *cb)
{
- struct net *net = sock_net(cb->skb->sk);
struct net_device *soft_iface;
struct batadv_priv *bat_priv;
struct batadv_hard_iface *primary_if = NULL;
struct batadv_hashtable *hash;
struct hlist_head *head;
int ret;
- int ifindex;
int bucket = cb->args[0];
int idx = cb->args[1];
int sub = cb->args[2];
int portid = NETLINK_CB(cb->skb).portid;
- ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX);
- if (!ifindex)
- return -EINVAL;
-
- soft_iface = dev_get_by_index(net, ifindex);
- if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
- ret = -ENODEV;
- goto out;
- }
+ soft_iface = batadv_netlink_get_softif(cb);
+ if (IS_ERR(soft_iface))
+ return PTR_ERR(soft_iface);
bat_priv = netdev_priv(soft_iface);
--
LinuxNextTracking
