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authorDavid S. Miller <davem@davemloft.net>2013-07-04 01:50:41 +0400
committerDavid S. Miller <davem@davemloft.net>2013-07-04 01:55:13 +0400
commit0c1072ae0242fbdffd9a0bba36e7a7033d287f9c (patch)
treee0f4dbdbf5078d4a707911177e7bdc17a70bdce5 /net/core
parentc50cd357887acf9fd7af3a5d492911bd825555a2 (diff)
parent8bb495e3f02401ee6f76d1b1d77f3ac9f079e376 (diff)
downloadlinux-0c1072ae0242fbdffd9a0bba36e7a7033d287f9c.tar.xz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts: drivers/net/ethernet/freescale/fec_main.c drivers/net/ethernet/renesas/sh_eth.c net/ipv4/gre.c The GRE conflict is between a bug fix (kfree_skb --> kfree_skb_list) and the splitting of the gre.c code into seperate files. The FEC conflict was two sets of changes adding ethtool support code in an "!CONFIG_M5272" CPP protected block. Finally the sh_eth.c conflict was between one commit add bits set in the .eesr_err_check mask whilst another commit removed the .tx_error_check member and assignments. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/dev.c34
-rw-r--r--net/core/dev_ioctl.c19
-rw-r--r--net/core/skbuff.c20
-rw-r--r--net/core/sock.c17
4 files changed, 52 insertions, 38 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 6a93cd8cd264..560dafd83adf 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -800,6 +800,40 @@ struct net_device *dev_get_by_index(struct net *net, int ifindex)
EXPORT_SYMBOL(dev_get_by_index);
/**
+ * netdev_get_name - get a netdevice name, knowing its ifindex.
+ * @net: network namespace
+ * @name: a pointer to the buffer where the name will be stored.
+ * @ifindex: the ifindex of the interface to get the name from.
+ *
+ * The use of raw_seqcount_begin() and cond_resched() before
+ * retrying is required as we want to give the writers a chance
+ * to complete when CONFIG_PREEMPT is not set.
+ */
+int netdev_get_name(struct net *net, char *name, int ifindex)
+{
+ struct net_device *dev;
+ unsigned int seq;
+
+retry:
+ seq = raw_seqcount_begin(&devnet_rename_seq);
+ rcu_read_lock();
+ dev = dev_get_by_index_rcu(net, ifindex);
+ if (!dev) {
+ rcu_read_unlock();
+ return -ENODEV;
+ }
+
+ strcpy(name, dev->name);
+ rcu_read_unlock();
+ if (read_seqcount_retry(&devnet_rename_seq, seq)) {
+ cond_resched();
+ goto retry;
+ }
+
+ return 0;
+}
+
+/**
* dev_getbyhwaddr_rcu - find a device by its hardware address
* @net: the applicable net namespace
* @type: media type of device
diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
index 6cc0481faade..5b7d0e1d0664 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -19,9 +19,8 @@
static int dev_ifname(struct net *net, struct ifreq __user *arg)
{
- struct net_device *dev;
struct ifreq ifr;
- unsigned seq;
+ int error;
/*
* Fetch the caller's info block.
@@ -30,19 +29,9 @@ static int dev_ifname(struct net *net, struct ifreq __user *arg)
if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
return -EFAULT;
-retry:
- seq = read_seqcount_begin(&devnet_rename_seq);
- rcu_read_lock();
- dev = dev_get_by_index_rcu(net, ifr.ifr_ifindex);
- if (!dev) {
- rcu_read_unlock();
- return -ENODEV;
- }
-
- strcpy(ifr.ifr_name, dev->name);
- rcu_read_unlock();
- if (read_seqcount_retry(&devnet_rename_seq, seq))
- goto retry;
+ error = netdev_get_name(net, ifr.ifr_name, ifr.ifr_ifindex);
+ if (error)
+ return error;
if (copy_to_user(arg, &ifr, sizeof(struct ifreq)))
return -EFAULT;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index b1fcb8727e56..77971a35d6e1 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -477,15 +477,8 @@ EXPORT_SYMBOL(skb_add_rx_frag);
static void skb_drop_list(struct sk_buff **listp)
{
- struct sk_buff *list = *listp;
-
+ kfree_skb_list(*listp);
*listp = NULL;
-
- do {
- struct sk_buff *this = list;
- list = list->next;
- kfree_skb(this);
- } while (list);
}
static inline void skb_drop_fraglist(struct sk_buff *skb)
@@ -645,6 +638,17 @@ void kfree_skb(struct sk_buff *skb)
}
EXPORT_SYMBOL(kfree_skb);
+void kfree_skb_list(struct sk_buff *segs)
+{
+ while (segs) {
+ struct sk_buff *next = segs->next;
+
+ kfree_skb(segs);
+ segs = next;
+ }
+}
+EXPORT_SYMBOL(kfree_skb_list);
+
/**
* skb_tx_error - report an sk_buff xmit error
* @skb: buffer that triggered an error
diff --git a/net/core/sock.c b/net/core/sock.c
index b6c619f4d47b..ab06b719f5b1 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -573,9 +573,7 @@ static int sock_getbindtodevice(struct sock *sk, char __user *optval,
int ret = -ENOPROTOOPT;
#ifdef CONFIG_NETDEVICES
struct net *net = sock_net(sk);
- struct net_device *dev;
char devname[IFNAMSIZ];
- unsigned seq;
if (sk->sk_bound_dev_if == 0) {
len = 0;
@@ -586,20 +584,9 @@ static int sock_getbindtodevice(struct sock *sk, char __user *optval,
if (len < IFNAMSIZ)
goto out;
-retry:
- seq = read_seqcount_begin(&devnet_rename_seq);
- rcu_read_lock();
- dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if);
- ret = -ENODEV;
- if (!dev) {
- rcu_read_unlock();
+ ret = netdev_get_name(net, devname, sk->sk_bound_dev_if);
+ if (ret)
goto out;
- }
-
- strcpy(devname, dev->name);
- rcu_read_unlock();
- if (read_seqcount_retry(&devnet_rename_seq, seq))
- goto retry;
len = strlen(devname) + 1;