X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=net%2Fllc%2Fllc_sap.c;h=008de1fc42ca79b07cafed68ccb3e7e396161dc9;hb=0b15a3a5285bac2a2caa4ef970410674b6dd2de5;hp=61cb8cf7d1532a4d4b1abd51244e863fc7e8b887;hpb=7ee66fcb94cb8be77d5f34cce7d315d11759f9c1;p=safe%2Fjmp%2Flinux-2.6

diff --git a/net/llc/llc_sap.c b/net/llc/llc_sap.c
index 61cb8cf..008de1f 100644
--- a/net/llc/llc_sap.c
+++ b/net/llc/llc_sap.c
@@ -24,23 +24,45 @@
 #include <net/tcp_states.h>
 #include <linux/llc.h>
 
+static int llc_mac_header_len(unsigned short devtype)
+{
+	switch (devtype) {
+	case ARPHRD_ETHER:
+	case ARPHRD_LOOPBACK:
+		return sizeof(struct ethhdr);
+#ifdef CONFIG_TR
+	case ARPHRD_IEEE802_TR:
+		return sizeof(struct trh_hdr);
+#endif
+	}
+	return 0;
+}
+
 /**
  *	llc_alloc_frame - allocates sk_buff for frame
  *	@dev: network device this skb will be sent over
+ *	@type: pdu type to allocate
+ *	@data_size: data size to allocate
  *
  *	Allocates an sk_buff for frame and initializes sk_buff fields.
  *	Returns allocated skb or %NULL when out of memory.
  */
-struct sk_buff *llc_alloc_frame(struct sock *sk, struct net_device *dev)
+struct sk_buff *llc_alloc_frame(struct sock *sk, struct net_device *dev,
+				u8 type, u32 data_size)
 {
-	struct sk_buff *skb = alloc_skb(128, GFP_ATOMIC);
+	int hlen = type == LLC_PDU_TYPE_U ? 3 : 4;
+	struct sk_buff *skb;
+
+	hlen += llc_mac_header_len(dev->type);
+	skb = alloc_skb(hlen + data_size, GFP_ATOMIC);
 
 	if (skb) {
-		skb_reserve(skb, 50);
-		skb->nh.raw   = skb->h.raw = skb->data;
+		skb_reset_mac_header(skb);
+		skb_reserve(skb, hlen);
+		skb_reset_network_header(skb);
+		skb_reset_transport_header(skb);
 		skb->protocol = htons(ETH_P_802_2);
 		skb->dev      = dev;
-		skb->mac.raw  = skb->head;
 		if (sk != NULL)
 			skb_set_owner_w(skb, sk);
 	}
@@ -201,7 +223,7 @@ static void llc_sap_state_process(struct llc_sap *sap, struct sk_buff *skb)
 			if (sock_queue_rcv_skb(skb->sk, skb))
 				kfree_skb(skb);
 		}
-	} 
+	}
 	kfree_skb(skb);
 }
 
@@ -215,7 +237,7 @@ static void llc_sap_state_process(struct llc_sap *sap, struct sk_buff *skb)
  *	This function is called when upper layer wants to send a TEST pdu.
  *	Returns 0 for success, 1 otherwise.
  */
-void llc_build_and_send_test_pkt(struct llc_sap *sap, 
+void llc_build_and_send_test_pkt(struct llc_sap *sap,
 				 struct sk_buff *skb, u8 *dmac, u8 dsap)
 {
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
@@ -224,7 +246,7 @@ void llc_build_and_send_test_pkt(struct llc_sap *sap,
 	ev->daddr.lsap = dsap;
 	memcpy(ev->saddr.mac, skb->dev->dev_addr, IFHWADDRLEN);
 	memcpy(ev->daddr.mac, dmac, IFHWADDRLEN);
-	
+
 	ev->type      = LLC_SAP_EV_TYPE_PRIM;
 	ev->prim      = LLC_TEST_PRIM;
 	ev->prim_type = LLC_PRIM_TYPE_REQ;
@@ -264,12 +286,14 @@ void llc_build_and_send_xid_pkt(struct llc_sap *sap, struct sk_buff *skb,
  *
  *	Sends received pdus to the sap state machine.
  */
-static void llc_sap_rcv(struct llc_sap *sap, struct sk_buff *skb)
+static void llc_sap_rcv(struct llc_sap *sap, struct sk_buff *skb,
+			struct sock *sk)
 {
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
 
 	ev->type   = LLC_SAP_EV_TYPE_PDU;
 	ev->reason = 0;
+	skb->sk = sk;
 	llc_sap_state_process(sap, skb);
 }
 
@@ -338,8 +362,7 @@ static void llc_sap_mcast(struct llc_sap *sap,
 			break;
 
 		sock_hold(sk);
-		skb_set_owner_r(skb1, sk);
-		llc_sap_rcv(sap, skb1);
+		llc_sap_rcv(sap, skb1, sk);
 		sock_put(sk);
 	}
 	read_unlock_bh(&sap->sk_list.lock);
@@ -359,8 +382,7 @@ void llc_sap_handler(struct llc_sap *sap, struct sk_buff *skb)
 	} else {
 		struct sock *sk = llc_lookup_dgram(sap, &laddr);
 		if (sk) {
-			skb_set_owner_r(skb, sk);
-			llc_sap_rcv(sap, skb);
+			llc_sap_rcv(sap, skb, sk);
 			sock_put(sk);
 		} else
 			kfree_skb(skb);