diff options
| author | Stephen Hemminger <shemminger@vyatta.com> | 2008-04-10 01:43:09 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-04-10 01:43:09 -0700 |
| commit | 43db6d65e0ef943a361cb91f8baa49132009227b (patch) | |
| tree | 5770f1dac28a209bb6e0c04f5948c454bb6a8733 /net/core | |
| parent | b715631fad3ed320b85d386a84a6fb0b3f86b0b9 (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.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index 85a5febab567..bbb53c69857c 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 |