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authorStephen Hemminger <shemminger@vyatta.com>2008-04-10 01:43:09 -0700
committerDavid S. Miller <davem@davemloft.net>2008-04-10 01:43:09 -0700
commit43db6d65e0ef943a361cb91f8baa49132009227b (patch)
tree5770f1dac28a209bb6e0c04f5948c454bb6a8733 /net/core
parentb715631fad3ed320b85d386a84a6fb0b3f86b0b9 (diff)
socket: sk_filter deinline
The sk_filter function is too big to be inlined. This saves 2296 bytes of text on allyesconfig. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/filter.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/net/core/filter.c b/net/core/filter.c
index 85a5febab56..bbb53c69857 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -64,6 +64,41 @@ static inline void *load_pointer(struct sk_buff *skb, int k,
}
/**
+ * sk_filter - run a packet through a socket filter
+ * @sk: sock associated with &sk_buff
+ * @skb: buffer to filter
+ * @needlock: set to 1 if the sock is not locked by caller.
+ *
+ * Run the filter code and then cut skb->data to correct size returned by
+ * sk_run_filter. If pkt_len is 0 we toss packet. If skb->len is smaller
+ * than pkt_len we keep whole skb->data. This is the socket level
+ * wrapper to sk_run_filter. It returns 0 if the packet should
+ * be accepted or -EPERM if the packet should be tossed.
+ *
+ */
+int sk_filter(struct sock *sk, struct sk_buff *skb)
+{
+ int err;
+ struct sk_filter *filter;
+
+ err = security_sock_rcv_skb(sk, skb);
+ if (err)
+ return err;
+
+ rcu_read_lock_bh();
+ filter = rcu_dereference(sk->sk_filter);
+ if (filter) {
+ unsigned int pkt_len = sk_run_filter(skb, filter->insns,
+ filter->len);
+ err = pkt_len ? pskb_trim(skb, pkt_len) : -EPERM;
+ }
+ rcu_read_unlock_bh();
+
+ return err;
+}
+EXPORT_SYMBOL(sk_filter);
+
+/**
* sk_run_filter - run a filter on a socket
* @skb: buffer to run the filter on
* @filter: filter to apply