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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

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Bring in the 'net' tree so that we can get some ipv4/ipv6 bug
fixes that some net-next work will build upon.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2013-01-29 15:32:13 -05:00
parent 218774dc34 fc16e884a2
commit f1e7b73acc
393 changed files with 3574 additions and 1816 deletions
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22
drivers/net/tun.c
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@@ -109,11 +109,11 @@ struct tap_filter {
unsigned char addr[FLT_EXACT_COUNT][ETH_ALEN];
};
/* 1024 is probably a high enough limit: modern hypervisors seem to support on
* the order of 100-200 CPUs so this leaves us some breathing space if we want
* to match a queue per guest CPU.
*/
#define MAX_TAP_QUEUES 1024
/* DEFAULT_MAX_NUM_RSS_QUEUES were choosed to let the rx/tx queues allocated for
* the netdevice to be fit in one page. So we can make sure the success of
* memory allocation. TODO: increase the limit. */
#define MAX_TAP_QUEUES DEFAULT_MAX_NUM_RSS_QUEUES
#define MAX_TAP_FLOWS 4096
#define TUN_FLOW_EXPIRE (3 * HZ)
@@ -186,6 +186,7 @@ struct tun_struct {
unsigned int numdisabled;
struct list_head disabled;
void *security;
u32 flow_count;
};
static inline u32 tun_hashfn(u32 rxhash)
@@ -219,6 +220,7 @@ static struct tun_flow_entry *tun_flow_create(struct tun_struct *tun,
e->queue_index = queue_index;
e->tun = tun;
hlist_add_head_rcu(&e->hash_link, head);
++tun->flow_count;
}
return e;
}
@@ -229,6 +231,7 @@ static void tun_flow_delete(struct tun_struct *tun, struct tun_flow_entry *e)
e->rxhash, e->queue_index);
hlist_del_rcu(&e->hash_link);
kfree_rcu(e, rcu);
--tun->flow_count;
}
static void tun_flow_flush(struct tun_struct *tun)
@@ -318,7 +321,8 @@ static void tun_flow_update(struct tun_struct *tun, u32 rxhash,
e->updated = jiffies;
} else {
spin_lock_bh(&tun->lock);
if (!tun_flow_find(head, rxhash))
if (!tun_flow_find(head, rxhash) &&
tun->flow_count < MAX_TAP_FLOWS)
tun_flow_create(tun, head, rxhash, queue_index);
if (!timer_pending(&tun->flow_gc_timer))
@@ -1587,6 +1591,8 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
else {
char *name;
unsigned long flags = 0;
int queues = ifr->ifr_flags & IFF_MULTI_QUEUE ?
MAX_TAP_QUEUES : 1;
if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
return -EPERM;
@@ -1610,8 +1616,8 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
name = ifr->ifr_name;
dev = alloc_netdev_mqs(sizeof(struct tun_struct), name,
tun_setup,
MAX_TAP_QUEUES, MAX_TAP_QUEUES);
tun_setup, queues, queues);
if (!dev)
return -ENOMEM;