[SOCK]: Introduce sk_receive_skb
Its common enough to to justify that, TCP still can't use it as it has the
prequeueing stuff, still to be made generic in the not so distant future :-)
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/pppoe.c b/drivers/net/pppoe.c
index a842ecc..71e303b 100644
--- a/drivers/net/pppoe.c
+++ b/drivers/net/pppoe.c
@@ -383,8 +383,6 @@
{
struct pppoe_hdr *ph;
struct pppox_sock *po;
- struct sock *sk;
- int ret;
if (!pskb_may_pull(skb, sizeof(struct pppoe_hdr)))
goto drop;
@@ -395,24 +393,8 @@
ph = (struct pppoe_hdr *) skb->nh.raw;
po = get_item((unsigned long) ph->sid, eth_hdr(skb)->h_source);
- if (!po)
- goto drop;
-
- sk = sk_pppox(po);
- bh_lock_sock(sk);
-
- /* Socket state is unknown, must put skb into backlog. */
- if (sock_owned_by_user(sk) != 0) {
- sk_add_backlog(sk, skb);
- ret = NET_RX_SUCCESS;
- } else {
- ret = pppoe_rcv_core(sk, skb);
- }
-
- bh_unlock_sock(sk);
- sock_put(sk);
-
- return ret;
+ if (po != NULL)
+ return sk_receive_skb(sk_pppox(po), skb);
drop:
kfree_skb(skb);
out:
diff --git a/include/net/sock.h b/include/net/sock.h
index 91d2895..6961700 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -926,6 +926,29 @@
sk_free(sk);
}
+static inline int sk_receive_skb(struct sock *sk, struct sk_buff *skb)
+{
+ int rc = NET_RX_SUCCESS;
+
+ if (sk_filter(sk, skb, 0))
+ goto discard_and_relse;
+
+ skb->dev = NULL;
+
+ bh_lock_sock(sk);
+ if (!sock_owned_by_user(sk))
+ rc = sk->sk_backlog_rcv(sk, skb);
+ else
+ sk_add_backlog(sk, skb);
+ bh_unlock_sock(sk);
+out:
+ sock_put(sk);
+ return rc;
+discard_and_relse:
+ kfree_skb(skb);
+ goto out;
+}
+
/* Detach socket from process context.
* Announce socket dead, detach it from wait queue and inode.
* Note that parent inode held reference count on this struct sock,
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index c363051..99e8afa 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -914,7 +914,6 @@
{
const struct dccp_hdr *dh;
struct sock *sk;
- int rc;
/* Step 1: Check header basics: */
@@ -984,28 +983,10 @@
goto do_time_wait;
}
- if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) {
- dccp_pr_debug("xfrm4_policy_check failed\n");
+ if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb))
goto discard_and_relse;
- }
- if (sk_filter(sk, skb, 0)) {
- dccp_pr_debug("sk_filter failed\n");
- goto discard_and_relse;
- }
-
- skb->dev = NULL;
-
- bh_lock_sock(sk);
- rc = 0;
- if (!sock_owned_by_user(sk))
- rc = dccp_v4_do_rcv(sk, skb);
- else
- sk_add_backlog(sk, skb);
- bh_unlock_sock(sk);
-
- sock_put(sk);
- return rc;
+ return sk_receive_skb(sk, skb);
no_dccp_socket:
if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb))
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index 599b0be..2e194c8 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -1032,7 +1032,6 @@
const struct dccp_hdr *dh;
struct sk_buff *skb = *pskb;
struct sock *sk;
- int rc;
/* Step 1: Check header basics: */
@@ -1077,21 +1076,7 @@
if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
goto discard_and_relse;
- if (sk_filter(sk, skb, 0))
- goto discard_and_relse;
-
- skb->dev = NULL;
-
- bh_lock_sock(sk);
- rc = 0;
- if (!sock_owned_by_user(sk))
- rc = dccp_v6_do_rcv(sk, skb);
- else
- sk_add_backlog(sk, skb);
- bh_unlock_sock(sk);
-
- sock_put(sk);
- return rc ? -1 : 0;
+ return sk_receive_skb(sk, skb) ? -1 : 0;
no_dccp_socket:
if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))
diff --git a/net/decnet/dn_nsp_in.c b/net/decnet/dn_nsp_in.c
index 369f25b..44bda85 100644
--- a/net/decnet/dn_nsp_in.c
+++ b/net/decnet/dn_nsp_in.c
@@ -793,7 +793,6 @@
got_it:
if (sk != NULL) {
struct dn_scp *scp = DN_SK(sk);
- int ret;
/* Reset backoff */
scp->nsp_rxtshift = 0;
@@ -807,21 +806,7 @@
goto free_out;
}
- bh_lock_sock(sk);
- ret = NET_RX_SUCCESS;
- if (decnet_debug_level & 8)
- printk(KERN_DEBUG "NSP: 0x%02x 0x%02x 0x%04x 0x%04x %d\n",
- (int)cb->rt_flags, (int)cb->nsp_flags,
- (int)cb->src_port, (int)cb->dst_port,
- !!sock_owned_by_user(sk));
- if (!sock_owned_by_user(sk))
- ret = dn_nsp_backlog_rcv(sk, skb);
- else
- sk_add_backlog(sk, skb);
- bh_unlock_sock(sk);
- sock_put(sk);
-
- return ret;
+ return sk_receive_skb(sk, skb);
}
return dn_nsp_no_socket(skb, reason);