Merge hera.kernel.org:/home/acme/BK/llc-2.5.old

into hera.kernel.org:/home/acme/BK/llc-2.5

include/net/llc_c_ev.h

@@ -110,38 +110,14 @@
 #define LLC_CONN_EV_QFY_S_FLAG_EQ_0		11
 #define LLC_CONN_EV_QFY_INIT_P_F_CYCLE		12
 
-/* Event data interface; what is sent in an event package */
-/* Event LLC_CONN_EV_TYPE_SIMPLE interface */
-struct llc_conn_ev_simple_if {
-	u8 ev;
-};
-
-/* Event LLC_CONN_EV_TYPE_PRIM interface */
-struct llc_conn_ev_prim_if {
-	u8			  prim;  /* connect, disconnect, reset, ... */
-	u8			  type;  /* request, indicate, response, conf */
-	struct llc_prim_if_block *data;
-};
-
-/* Event LLC_CONN_EV_TYPE_PDU interface */
-struct llc_conn_ev_pdu_if {
-	u8 ev;
-};
-
-union llc_conn_ev_if {
-	struct llc_conn_ev_simple_if  a;	/* 'a' for simple, easy ... */
-	struct llc_conn_ev_prim_if    prim;
-	struct llc_conn_ev_pdu_if     pdu;
-};
-
 struct llc_conn_state_ev {
-	u8			  type;
-	u8			  reason;
-	u8			  status;
-	u8			  flag;
-	struct llc_prim_if_block *ind_prim;
-	struct llc_prim_if_block *cfm_prim;
-	union llc_conn_ev_if	  data;
+	u8 type;
+	u8 prim;
+	u8 prim_type;
+	u8 reason;
+	u8 status;
+	u8 ind_prim;
+	u8 cfm_prim;
 };
 
 static __inline__ struct llc_conn_state_ev *llc_conn_ev(struct sk_buff *skb)

include/net/llc_conn.h

@@ -66,18 +66,10 @@ struct llc_opt {
 	u32		    rx_pdu_hdr;	   /* used for saving header of last pdu
 					      received and caused sending FRMR.
 					      Used for resending FRMR */
-#ifdef DEBUG_LLC_CONN_ALLOC
-	char *f_alloc,	/* function that allocated this connection */
-	     *f_free;	/* function that freed this connection */
-	int l_alloc,	/* line that allocated this connection */
-	    l_free;	/* line that freed this connection */
-#endif
 };
 
 #define llc_sk(__sk) ((struct llc_opt *)(__sk)->protinfo)
 
-struct llc_conn_state_ev;
-
 extern struct sock *llc_sk_alloc(int family, int priority);
 extern void llc_sk_free(struct sock *sk);
 
@@ -100,6 +92,9 @@ extern struct sock *llc_lookup_established(struct llc_sap *sap,
 					   struct llc_addr *laddr);
 extern struct sock *llc_lookup_listener(struct llc_sap *sap,
 					struct llc_addr *laddr);
+extern struct sock *llc_lookup_dgram(struct llc_sap *sap,
+				     struct llc_addr *laddr);
+extern void llc_save_primitive(struct sk_buff* skb, u8 prim);
 extern u8 llc_data_accept_state(u8 state);
 extern void llc_build_offset_table(void);
 #endif /* LLC_CONN_H */

include/net/llc_evnt.h

@@ -31,26 +31,12 @@
 #define LLC_STATION_EV_RX_NULL_DSAP_TEST_C			8
 #define LLC_STATION_EV_DISABLE_REQ				9
 
-/* Interfaces for various types of supported events */
-struct llc_stat_ev_simple_if {
-	u8 ev;
-};
-
-struct llc_stat_ev_prim_if {
-	u8 prim; /* connect, disconnect, reset, ... */
-	u8 type; /* request, indicate, response, confirm */
-};
-
-union llc_stat_ev_if {
-	struct llc_stat_ev_simple_if  a;	/* 'a' for simple, easy ... */
-	struct llc_stat_ev_prim_if    prim;
-};
-
 struct llc_station_state_ev {
-	u8		     type;
-	u8		     reason;
-	union llc_stat_ev_if data;
-	struct list_head     node; /* node in station->ev_q.list */
+	u8		 type;
+	u8		 prim;
+	u8		 prim_type;
+	u8		 reason;
+	struct list_head node; /* node in station->ev_q.list */
 };
 
 static __inline__ struct llc_station_state_ev *

include/net/llc_frame.h

-/* if_ether.h needed for definition of ETH_DATA_LEN and ETH_ALEN
- */
-#include "linux/if_ether.h"
-
-/* frame layout based on par3.2 "LLC PDU format"
- */
-typedef union {			/* pdu layout from pages 40 & 44 */
-    struct {			/* general header, all pdu types */
-	unsigned dsap : 8;	/* dest service access point */
-	unsigned ssap : 8;	/* source service access point */
-	unsigned f1 : 1;	/* I- U- or S- format id bits */
-	unsigned f2 : 1;
-	unsigned : 6;
-	unsigned : 8;
-   } pdu_hdr;
-   struct {
-        char dummy1[2];   	/* dsap + ssap */
-	char byte1;
-	char byte2;
-   } pdu_cntl;			/* unformatted control bytes */
-   struct {			/* header of an Information pdu */
-	unsigned char dummy2[2];
-	unsigned : 1;
-	unsigned ns : 7;
-	unsigned i_pflag : 1;   /* poll/final bit */
-	unsigned nr : 7;	/* N(R)  */	
-	unsigned char is_info[ ETH_DATA_LEN ];
-   }  i_hdr;
-   struct {			/* header of a Supervisory pdu */
- 	unsigned char dummy3[2];
-	unsigned : 2;
-	unsigned ss : 2;	/* supervisory function bits */
-	unsigned : 4;
-	unsigned s_pflag : 1;   /* poll/final bit  */
-	unsigned nr : 7;	/* N(R)  */
-   } s_hdr;
-
-/* when accessing the P/F bit or the N(R) field there's no need to distinguish
-   I pdus from S pdus i_pflag and s_pflag / i_nr and s_nr map to the same
-   physical location.
- */ 
-   struct {			/* header of an Unnumbered pdu */
-	unsigned char dummy4[2];
-	unsigned : 2;
-	unsigned mm1 : 2;	/* modifier function part1 */
-	unsigned u_pflag : 1;    /* P/F for U- pdus */
-	unsigned mm2 : 3;	/* modifier function part2 */
-	unsigned char u_info[ ETH_DATA_LEN-1];
-   } u_hdr;
-   struct {			/* mm field in an Unnumbered pdu */
-	unsigned char dummy5[2];
-	unsigned : 2;
-	unsigned mm : 6;	/* must be masked to get ridd of P/F !  */
-   } u_mm;
-   	 
-} frame_type, *frameptr;
-
-/* frame format test macros: */
-
-#define IS_UFRAME( fr ) ( ( (fr)->pdu_hdr.f1) & ( (fr)->pdu_hdr.f2) )
-
-#define IS_IFRAME( fr ) ( !( (fr)->pdu_hdr.f1) )
-
-#define IS_SFRAME( fr ) ( ( (fr)->pdu_hdr.f1) & !( (fr)->pdu_hdr.f2) )
-
-#define IS_RSP( fr ) ( fr->pdu_hdr.ssap & 0x01 )
-
-
-/* The transition table, the _encode tables and some tests in the
-   source code depend on the numeric order of these values.
-   Think twice before changing.
- */
-
-/* frame names for TYPE 2 operation: */
-#define I_CMD		0
-#define RR_CMD		1
-#define RNR_CMD		2
-#define REJ_CMD		3
-#define DISC_CMD	4
-#define SABME_CMD	5
-#define I_RSP		6
-#define RR_RSP		7
-#define RNR_RSP		8
-#define REJ_RSP		9
-#define UA_RSP		10
-#define DM_RSP		11
-#define FRMR_RSP	12
-
-/* junk frame name: */
-#define BAD_FRAME	13
-#define NO_FRAME	13
-
-/* frame names for TYPE 1 operation: */
-#define UI_CMD		14
-#define XID_CMD		15
-#define TEST_CMD	16
-#define XID_RSP		17
-#define TEST_RSP	18

include/net/llc_if.h

@@ -17,17 +17,17 @@
 #include <linux/if_arp.h>
 #include <linux/llc.h>
 
-#define LLC_DATAUNIT_PRIM	0
-#define LLC_CONN_PRIM		1
-#define LLC_DATA_PRIM		2
-#define LLC_DISC_PRIM		3
-#define LLC_RESET_PRIM		4
-#define LLC_FLOWCONTROL_PRIM	5 /* Not supported at this time */
-#define LLC_DISABLE_PRIM	6
-#define LLC_XID_PRIM		7
-#define LLC_TEST_PRIM		8
-#define LLC_SAP_ACTIVATION      9
-#define LLC_SAP_DEACTIVATION   10
+#define LLC_DATAUNIT_PRIM	1
+#define LLC_CONN_PRIM		2
+#define LLC_DATA_PRIM		3
+#define LLC_DISC_PRIM		4
+#define LLC_RESET_PRIM		5
+#define LLC_FLOWCONTROL_PRIM	6 /* Not supported at this time */
+#define LLC_DISABLE_PRIM	7
+#define LLC_XID_PRIM		8
+#define LLC_TEST_PRIM		9
+#define LLC_SAP_ACTIVATION     10
+#define LLC_SAP_DEACTIVATION   11
 
 #define LLC_NBR_PRIMITIVES     11
 
@@ -67,66 +67,22 @@ struct llc_addr {
 	u8 mac[IFHWADDRLEN];
 };
 
-struct llc_prim_reset {
-	struct sock *sk;
-	u16	     link;
-};
-
- /* Sending data in conection-less mode */
-struct llc_prim_unit_data {
-	struct llc_addr	saddr;
-	struct llc_addr	daddr;
-	u8		pri;
-	struct sk_buff *skb;		/* pointer to frame */
-	u8		lfb;		/* largest frame bit (TR) */
-};
-
-struct llc_prim_xid {
-	struct llc_addr saddr;
-	struct llc_addr daddr;
-	u8		pri;
-	struct sk_buff *skb;
-};
-
-struct llc_prim_test {
-	struct llc_addr	saddr;
-	struct llc_addr	daddr;
-	u8		pri;
-	struct sk_buff *skb;		/* pointer to frame */
-};
-
-union llc_u_prim_data {
-	struct llc_prim_reset	  res;
-	struct llc_prim_unit_data udata;	/* unit data */
-	struct llc_prim_xid	  xid;
-	struct llc_prim_test	  test;
-};
-
 struct llc_sap;
 
-/* Information block passed with all called primitives */
-struct llc_prim_if_block {
-	struct llc_sap	      *sap;
-	u8		       prim;
-	union llc_u_prim_data *data;
-};
-typedef int (*llc_prim_call_t)(struct llc_prim_if_block *prim_if);
-
-extern struct llc_sap *llc_sap_open(llc_prim_call_t network_indicate,
-				    llc_prim_call_t network_confirm, u8 lsap);
+extern struct llc_sap *llc_sap_open(u8 lsap,
+				    int (*func)(struct sk_buff *skb,
+						struct net_device *dev,
+						struct packet_type *pt));
 extern void llc_sap_close(struct llc_sap *sap);
 
 extern int llc_establish_connection(struct sock *sk, u8 *lmac,
 				    u8 *dmac, u8 dsap);
 extern int llc_build_and_send_pkt(struct sock *sk, struct sk_buff *skb);
-extern void llc_build_and_send_ui_pkt(struct llc_sap *sap,
-				      struct sk_buff *skb,
+extern void llc_build_and_send_ui_pkt(struct llc_sap *sap, struct sk_buff *skb,
 				      u8 *dmac, u8 dsap);
-extern void llc_build_and_send_xid_pkt(struct llc_sap *sap,
-				       struct sk_buff *skb,
+extern void llc_build_and_send_xid_pkt(struct llc_sap *sap, struct sk_buff *skb,
 				       u8 *dmac, u8 dsap);
-extern void llc_build_and_send_test_pkt(struct llc_sap *sap,
-					struct sk_buff *skb,
+extern void llc_build_and_send_test_pkt(struct llc_sap *sap, struct sk_buff *skb,
 					u8 *dmac, u8 dsap);
 extern int llc_send_disc(struct sock *sk);
 #endif /* LLC_IF_H */

include/net/llc_main.h

@@ -43,7 +43,7 @@ struct llc_station {
 	u8			    maximum_retry;
 	u8			    mac_sa[6];
 	struct {
-		spinlock_t	    lock;
+		rwlock_t	    lock;
 		struct list_head    list;
 	} sap_list;
 	struct {
@@ -52,7 +52,6 @@ struct llc_station {
 	} ev_q;
 	struct sk_buff_head	    mac_pdu_q;
 };
-struct llc_station_state_ev;
 
 extern struct llc_sap *llc_sap_alloc(void);
 extern void llc_sap_save(struct llc_sap *sap);

include/net/llc_name.h

-char *frame_names[] =
-    {"I_CMD","RR_CMD","RNR_CMD","REJ_CMD","DISC_CMD",
-    "SABME_CMD","I_RSP","RR_RSP","RNR_RSP","REJ_RSP",
-    "UA_RSP","DM_RSP","FRMR_RSP","BAD_FRAME","UI_CMD",
-    "XID_CMD","TEST_CMD","XID_RSP","TEST_RSP"
-};
- 

include/net/llc_s_ev.h

@@ -34,37 +34,14 @@
 #define LLC_SAP_EV_RX_TEST_R		 9
 #define LLC_SAP_EV_DEACTIVATION_REQ	10
 
-/* Interfaces for various types of supported events */
-struct llc_sap_ev_simple_if {
-	u8 ev;
-};
-
-struct llc_prim_if_block;
-
-struct llc_sap_ev_prim_if {
-	u8			  prim; /* connect, disconnect, reset, ... */
-	u8			  type; /* request, indicate, response, conf */
-	struct llc_prim_if_block *data;
-};
-
-struct llc_sap_ev_pdu_if {
-	u8 ev;
-};
-
-union llc_sap_ev_if {
-	struct llc_sap_ev_simple_if	a;	/* 'a' for simple, easy ... */
-	struct llc_sap_ev_prim_if	prim;
-	struct llc_sap_ev_pdu_if	pdu;
-};
-
-struct llc_prim_if_block;
-
 struct llc_sap_state_ev {
-	u8			  type;
-	u8			  reason;
-	u8			  ind_cfm_flag;
-	struct llc_prim_if_block *prim;
-	union llc_sap_ev_if	  data;
+	u8		prim;
+	u8		prim_type;
+	u8		type;
+	u8		reason;
+	u8		ind_cfm_flag;
+	struct llc_addr saddr;
+	struct llc_addr daddr;
 };
 
 static __inline__ struct llc_sap_state_ev *llc_sap_ev(struct sk_buff *skb)

include/net/llc_sap.h

@@ -12,36 +12,33 @@
  * See the GNU General Public License for more details.
  */
 #include <linux/skbuff.h>
+#include <net/llc_if.h>
 /**
  * struct llc_sap - Defines the SAP component
  *
+ * @station - station this sap belongs to
+ * @state - sap state
  * @p_bit - only lowest-order bit used
  * @f_bit - only lowest-order bit used
- * @ind - provided by network layer
- * @conf - provided by network layer
  * @laddr - SAP value in this 'lsap'
  * @node - entry in station sap_list
  * @sk_list - LLC sockets this one manages
- * @mac_pdu_q - PDUs ready to send to MAC
  */
 struct llc_sap {
-	struct llc_station	 *parent_station;
-	u8			 state;
-	u8			 p_bit;
-	u8			 f_bit;
-	llc_prim_call_t		 ind;
-	llc_prim_call_t		 conf;
-	struct llc_prim_if_block llc_ind_prim, llc_cfm_prim;
-	union llc_u_prim_data	 llc_ind_data_prim, llc_cfm_data_prim;
-	struct llc_addr		 laddr;
-	struct list_head	 node;
+	struct llc_station *station;
+	u8		    state;
+	u8		    p_bit;
+	u8		    f_bit;
+	int		    (*rcv_func)(struct sk_buff *skb,
+					struct net_device *dev,
+					struct packet_type *pt);
+	struct llc_addr	    laddr;
+	struct list_head    node;
 	struct {
-		spinlock_t	 lock;
-		struct list_head list;
+		rwlock_t    lock;
+		struct sock *list;
 	} sk_list;
-	struct sk_buff_head	 mac_pdu_q;
 };
-struct llc_sap_state_ev;
 
 extern void llc_sap_assign_sock(struct llc_sap *sap, struct sock *sk);
 extern void llc_sap_unassign_sock(struct llc_sap *sap, struct sock *sk);

include/net/llc_state.h

-char *state_names[] = { 
-	"ADM","CONN","RESET_WAIT","RESET_CHECK","SETUP",
-	"RESET","D_CONN","ERROR","NORMAL"
-};

include/net/p8022.h

 #ifndef _NET_P8022_H
 #define _NET_P8022_H
-#include <net/llc_if.h>
-
-extern struct datalink_proto *register_8022_client(unsigned char type,
-			   int (*indicate)(struct llc_prim_if_block *prim));
+extern struct datalink_proto *
+	register_8022_client(unsigned char type,
+			     int (*func)(struct sk_buff *skb,
+					 struct net_device *dev,
+					 struct packet_type *pt));
 extern void unregister_8022_client(struct datalink_proto *proto);
 
 #endif

net/802/p8022.c

@@ -33,7 +33,9 @@ static int p8022_request(struct datalink_proto *dl, struct sk_buff *skb,
 }
 
 struct datalink_proto *register_8022_client(unsigned char type,
-			  int (*indicate)(struct llc_prim_if_block *prim))
+					    int (*func)(struct sk_buff *skb,
+							struct net_device *dev,
+							struct packet_type *pt))
 {
 	struct datalink_proto *proto;
 
@@ -42,7 +44,7 @@ struct datalink_proto *register_8022_client(unsigned char type,
 		proto->type[0]		= type;
 		proto->header_length	= 3;
 		proto->request		= p8022_request;
-		proto->sap = llc_sap_open(indicate, NULL, type);
+		proto->sap = llc_sap_open(type, func);
 		if (!proto->sap) {
 			kfree(proto);
 			proto = NULL;

net/802/psnap.c

@@ -51,32 +51,26 @@ static struct datalink_proto *find_snap_client(unsigned char *desc)
 /*
  *	A SNAP packet has arrived
  */
-static int snap_indicate(struct llc_prim_if_block *prim)
+static int snap_rcv(struct sk_buff *skb, struct net_device *dev,
+		    struct packet_type *pt)
 {
-	struct sk_buff *skb;
-	struct datalink_proto *proto;
 	int rc = 1;
-	static struct packet_type psnap_packet_type = {
+	struct datalink_proto *proto = find_snap_client(skb->h.raw);
+	static struct packet_type snap_packet_type = {
 		.type = __constant_htons(ETH_P_SNAP),
 	};
 
-	if (prim->prim != LLC_DATAUNIT_PRIM)
-		goto out;
-
-	skb = prim->data->udata.skb;
-	proto = find_snap_client(skb->h.raw);
-
 	if (proto) {
 		/* Pass the frame on. */
 		skb->h.raw  += 5;
 		skb_pull(skb, 5);
-		rc = proto->rcvfunc(skb, skb->dev, &psnap_packet_type);
+		rc = proto->rcvfunc(skb, dev, &snap_packet_type);
 	} else {
 		skb->sk = NULL;
 		kfree_skb(skb);
 		rc = 1;
 	}
-out:
+
 	return rc;
 }
 
@@ -99,7 +93,7 @@ EXPORT_SYMBOL(unregister_snap_client);
 
 static int __init snap_init(void)
 {
-	snap_sap = llc_sap_open(snap_indicate, NULL, 0xAA);
+	snap_sap = llc_sap_open(0xAA, snap_rcv);
 
 	if (!snap_sap)
 		printk(KERN_CRIT "SNAP - unable to register with 802.2\n");

net/ipx/af_ipx.c

@@ -2252,22 +2252,6 @@ drop:	kfree_skb(skb);
 out:	return ret;
 }
 
-static int ipx_8022_indicate(struct llc_prim_if_block *prim)
-{
-	int rc = 1;
-	static struct packet_type p8022_packet_type = {
-		.type = __constant_htons(ETH_P_802_2),
-	};
-
-	if (prim->prim == LLC_DATAUNIT_PRIM) {
-		struct sk_buff *skb = prim->data->udata.skb;
-
-		rc = ipx_rcv(skb, skb->dev, &p8022_packet_type);
-	}
-						
-	return rc;
-}
-
 static int ipx_sendmsg(struct socket *sock, struct msghdr *msg, int len,
 	struct scm_cookie *scm)
 {
@@ -2560,7 +2544,7 @@ static int __init ipx_init(void)
 	else
 		printk(ipx_8023_err_msg);
 
-	p8022_datalink = register_8022_client(ipx_8022_type, ipx_8022_indicate);
+	p8022_datalink = register_8022_client(ipx_8022_type, ipx_rcv);
 	if (!p8022_datalink)
 		printk(ipx_llc_err_msg);
 

net/llc/llc_c_ac.c

@@ -65,9 +65,7 @@ int llc_conn_ac_conn_ind(struct sock *sk, struct sk_buff *skb)
 		llc_pdu_decode_sa(skb, llc->daddr.mac);
 		llc_pdu_decode_da(skb, llc->laddr.mac);
 		llc->dev = skb->dev;
-		/* FIXME: find better way to notify upper layer */
-		ev->flag     = LLC_CONN_PRIM + 1;
-		ev->ind_prim = (void *)1;
+		ev->ind_prim = LLC_CONN_PRIM;
 		rc = 0;
 	}
 	return rc;
@@ -77,8 +75,7 @@ int llc_conn_ac_conn_confirm(struct sock *sk, struct sk_buff *skb)
 {
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
-	ev->flag     = LLC_CONN_PRIM + 1;
-	ev->cfm_prim = (void *)1;
+	ev->cfm_prim = LLC_CONN_PRIM;
 	return 0;
 }
 
@@ -86,12 +83,7 @@ static int llc_conn_ac_data_confirm(struct sock *sk, struct sk_buff *skb)
 {
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
-	/*
-	 * FIXME: find better way to tell upper layer that the packet was
-	 * confirmed by the other endpoint
-	 */
-	ev->flag     = LLC_DATA_PRIM + 1;
-	ev->cfm_prim = (void *)1;
+	ev->cfm_prim = LLC_DATA_PRIM;
 	return 0;
 }
 
@@ -130,8 +122,7 @@ int llc_conn_ac_disc_ind(struct sock *sk, struct sk_buff *skb)
 	}
 	if (!rc) {
 		ev->reason   = reason;
-		ev->flag     = LLC_DISC_PRIM + 1;
-		ev->ind_prim = (void *)1;
+		ev->ind_prim = LLC_DISC_PRIM;
 	}
 	return rc;
 }
@@ -141,8 +132,7 @@ int llc_conn_ac_disc_confirm(struct sock *sk, struct sk_buff *skb)
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
 	ev->reason   = ev->status;
-	ev->flag     = LLC_DISC_PRIM + 1;
-	ev->cfm_prim = (void *)1;
+	ev->cfm_prim = LLC_DISC_PRIM;
 	return 0;
 }
 
@@ -184,18 +174,8 @@ int llc_conn_ac_rst_ind(struct sock *sk, struct sk_buff *skb)
 			break;
 	}
 	if (!rc) {
-		struct llc_sap *sap = llc->sap;
-		struct llc_prim_if_block *prim = &sap->llc_ind_prim;
-		union llc_u_prim_data *prim_data = prim->data;
-
-		prim_data->res.sk     = sk;
-		prim_data->res.link   = llc->link;
-		prim->data	      = prim_data;
-		prim->prim	      = LLC_RESET_PRIM;
-		prim->sap	      = sap;
-		ev->reason	      = reason;
-		ev->flag	      = 1;
-		ev->ind_prim	      = prim;
+		ev->reason   = reason;
+		ev->ind_prim = LLC_RESET_PRIM;
 	}
 	return rc;
 }
@@ -203,18 +183,9 @@ int llc_conn_ac_rst_ind(struct sock *sk, struct sk_buff *skb)
 int llc_conn_ac_rst_confirm(struct sock *sk, struct sk_buff *skb)
 {
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
-	struct llc_opt *llc = llc_sk(sk);
-	struct llc_sap *sap = llc->sap;
-	struct llc_prim_if_block *prim = &sap->llc_cfm_prim;
-	union llc_u_prim_data *prim_data = prim->data;
-
-	prim_data->res.sk   = sk;
-	prim_data->res.link = llc->link;
-	prim->data	    = prim_data;
-	prim->prim	    = LLC_RESET_PRIM;
-	prim->sap	    = sap;
-	ev->flag	    = 1;
-	ev->cfm_prim	    = prim;
+
+	ev->reason   = 0;
+	ev->cfm_prim = LLC_RESET_PRIM;
 	return 0;
 }
 

net/llc/llc_c_ev.c

@@ -101,48 +101,48 @@ int llc_conn_ev_conn_req(struct sock *sk, struct sk_buff *skb)
 {
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
-	return ev->data.prim.prim == LLC_CONN_PRIM &&
-	       ev->data.prim.type == LLC_PRIM_TYPE_REQ ? 0 : 1;
+	return ev->prim == LLC_CONN_PRIM &&
+	       ev->prim_type == LLC_PRIM_TYPE_REQ ? 0 : 1;
 }
 
 int llc_conn_ev_conn_resp(struct sock *sk, struct sk_buff *skb)
 {
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
-	return ev->data.prim.prim == LLC_CONN_PRIM &&
-	       ev->data.prim.type == LLC_PRIM_TYPE_RESP ? 0 : 1;
+	return ev->prim == LLC_CONN_PRIM &&
+	       ev->prim_type == LLC_PRIM_TYPE_RESP ? 0 : 1;
 }
 
 int llc_conn_ev_data_req(struct sock *sk, struct sk_buff *skb)
 {
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
-	return ev->data.prim.prim == LLC_DATA_PRIM &&
-	       ev->data.prim.type == LLC_PRIM_TYPE_REQ ? 0 : 1;
+	return ev->prim == LLC_DATA_PRIM &&
+	       ev->prim_type == LLC_PRIM_TYPE_REQ ? 0 : 1;
 }
 
 int llc_conn_ev_disc_req(struct sock *sk, struct sk_buff *skb)
 {
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
-	return ev->data.prim.prim == LLC_DISC_PRIM &&
-	       ev->data.prim.type == LLC_PRIM_TYPE_REQ ? 0 : 1;
+	return ev->prim == LLC_DISC_PRIM &&
+	       ev->prim_type == LLC_PRIM_TYPE_REQ ? 0 : 1;
 }
 
 int llc_conn_ev_rst_req(struct sock *sk, struct sk_buff *skb)
 {
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
-	return ev->data.prim.prim == LLC_RESET_PRIM &&
-	       ev->data.prim.type == LLC_PRIM_TYPE_REQ ? 0 : 1;
+	return ev->prim == LLC_RESET_PRIM &&
+	       ev->prim_type == LLC_PRIM_TYPE_REQ ? 0 : 1;
 }
 
 int llc_conn_ev_rst_resp(struct sock *sk, struct sk_buff *skb)
 {
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
-	return ev->data.prim.prim == LLC_RESET_PRIM &&
-	       ev->data.prim.type == LLC_PRIM_TYPE_RESP ? 0 : 1;
+	return ev->prim == LLC_RESET_PRIM &&
+	       ev->prim_type == LLC_PRIM_TYPE_RESP ? 0 : 1;
 }
 
 int llc_conn_ev_local_busy_detected(struct sock *sk, struct sk_buff *skb)
@@ -150,7 +150,7 @@ int llc_conn_ev_local_busy_detected(struct sock *sk, struct sk_buff *skb)
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
 	return ev->type == LLC_CONN_EV_TYPE_SIMPLE &&
-	       ev->data.a.ev == LLC_CONN_EV_LOCAL_BUSY_DETECTED ? 0 : 1;
+	       ev->prim_type == LLC_CONN_EV_LOCAL_BUSY_DETECTED ? 0 : 1;
 }
 
 int llc_conn_ev_local_busy_cleared(struct sock *sk, struct sk_buff *skb)
@@ -158,7 +158,7 @@ int llc_conn_ev_local_busy_cleared(struct sock *sk, struct sk_buff *skb)
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
 	return ev->type == LLC_CONN_EV_TYPE_SIMPLE &&
-	       ev->data.a.ev == LLC_CONN_EV_LOCAL_BUSY_CLEARED ? 0 : 1;
+	       ev->prim_type == LLC_CONN_EV_LOCAL_BUSY_CLEARED ? 0 : 1;
 }
 
 int llc_conn_ev_rx_bad_pdu(struct sock *sk, struct sk_buff *skb)
@@ -666,7 +666,7 @@ int llc_conn_ev_tx_buffer_full(struct sock *sk, struct sk_buff *skb)
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
 	return ev->type == LLC_CONN_EV_TYPE_SIMPLE &&
-	       ev->data.a.ev == LLC_CONN_EV_TX_BUFF_FULL ? 0 : 1;
+	       ev->prim_type == LLC_CONN_EV_TX_BUFF_FULL ? 0 : 1;
 }
 
 /* Event qualifier functions

net/llc/llc_conn.c

@@ -39,12 +39,12 @@ static struct llc_conn_state_trans *llc_qualify_conn_ev(struct sock *sk,
 /* Offset table on connection states transition diagram */
 static int llc_offset_table[NBR_CONN_STATES][NBR_CONN_EV];
 
-void llc_save_primitive(struct sock *sk, struct sk_buff* skb, u8 prim)
+void llc_save_primitive(struct sk_buff* skb, u8 prim)
 {
 	struct sockaddr_llc *addr = llc_ui_skb_cb(skb);
 
        /* save primitive for use by the user. */
-	addr->sllc_family = sk->family;
+	addr->sllc_family = skb->sk->family;
 	addr->sllc_arphrd = skb->dev->type;
 	addr->sllc_test   = prim == LLC_TEST_PRIM;
 	addr->sllc_xid    = prim == LLC_XID_PRIM;
@@ -67,110 +67,120 @@ void llc_save_primitive(struct sock *sk, struct sk_buff* skb, u8 prim)
  */
 int llc_conn_state_process(struct sock *sk, struct sk_buff *skb)
 {
-	/* sending event to state machine */
-	int rc = llc_conn_service(sk, skb);
+	int rc;
 	struct llc_opt *llc = llc_sk(sk);
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
-	u8 flag = ev->flag;
-	u8 status = ev->status;
-	struct llc_prim_if_block *ind_prim = ev->ind_prim;
-	struct llc_prim_if_block *cfm_prim = ev->cfm_prim;
 
-	/*
-	 * FIXME: this will vanish as soon I get rid of the last prim crap
-	 */
-	if (flag != LLC_DATA_PRIM + 1 && flag != LLC_CONN_PRIM + 1 &&
-	    flag != LLC_DISC_PRIM + 1)
-		llc_conn_free_ev(skb);
-	else if (ind_prim && cfm_prim)
-		skb_get(skb);
-	if (!flag)   /* indicate or confirm not required */
+	ev->ind_prim = ev->cfm_prim = 0;
+	rc = llc_conn_service(sk, skb); /* sending event to state machine */
+	if (rc) {
+		printk(KERN_ERR "%s: llc_conn_service failed\n", __FUNCTION__);
+		goto out_kfree_skb;
+	}
+
+	if (!ev->ind_prim && !ev->cfm_prim) {   /* indicate or confirm not required */
+		if (!skb->list)
+			goto out_kfree_skb;
 		goto out;
-	rc = 0;
-	if (ind_prim) { /* indication required */
-		/*
-		 * FIXME: this will be saner as soon I get rid of the double
-		 *	  sock crap
-		 */
-		switch (flag) {
-		case LLC_DATA_PRIM + 1:
-			llc_save_primitive(sk, skb, LLC_DATA_PRIM);
-			if (sock_queue_rcv_skb(sk, skb)) {
-				/*
-				 * FIXME: have to sync the LLC state
-				 *        machine wrt mem usage with
-				 *        sk->{r,w}mem_alloc, will do
-				 *        this soon 8)
-				 */
-				printk(KERN_ERR
-				       "%s: sock_queue_rcv_skb failed!\n",
-				       __FUNCTION__);
-				kfree_skb(skb);
-			}
-			break;
-		case LLC_CONN_PRIM + 1: {
-			struct sock *parent = skb->sk;
+	}
+
+	if (ev->ind_prim && ev->cfm_prim)
+		skb_get(skb);
 
-			skb->sk = sk;
-			skb_queue_tail(&parent->receive_queue, skb);
-			sk->state_change(parent);
+	switch (ev->ind_prim) {
+	case LLC_DATA_PRIM:
+		llc_save_primitive(skb, LLC_DATA_PRIM);
+		if (sock_queue_rcv_skb(sk, skb)) {
+			/*
+			 * shouldn't happen
+			 */
+			printk(KERN_ERR "%s: sock_queue_rcv_skb failed!\n",
+			       __FUNCTION__);
+			kfree_skb(skb);
 		}
-			break;
-		case LLC_DISC_PRIM + 1:
-			sock_hold(sk);
-			if (sk->type == SOCK_STREAM && sk->state == TCP_ESTABLISHED) {
-				sk->shutdown       = SHUTDOWN_MASK;
-				sk->socket->state  = SS_UNCONNECTED;
-				sk->state          = TCP_CLOSE;
-				if (!sk->dead) {
-					sk->state_change(sk);
-					sk->dead = 1;
-				}
+		break;
+	case LLC_CONN_PRIM: {
+		struct sock *parent = skb->sk;
+
+		skb->sk = sk;
+		skb_queue_tail(&parent->receive_queue, skb);
+		sk->state_change(parent);
+	}
+		break;
+	case LLC_DISC_PRIM:
+		sock_hold(sk);
+		if (sk->type == SOCK_STREAM && sk->state == TCP_ESTABLISHED) {
+			sk->shutdown       = SHUTDOWN_MASK;
+			sk->socket->state  = SS_UNCONNECTED;
+			sk->state          = TCP_CLOSE;
+			if (!sk->dead) {
+				sk->state_change(sk);
+				sk->dead = 1;
 			}
+		}
+		kfree_skb(skb);
+		sock_put(sk);
+		break;
+	case LLC_RESET_PRIM:
+		/*
+		 * FIXME:
+		 * RESET is not being notified to upper layers for now
+		 */
+		printk(KERN_INFO "%s: received a reset ind!\n", __FUNCTION__);
+		kfree_skb(skb);
+		break;
+	default:
+		if (ev->ind_prim) {
+			printk(KERN_INFO "%s: received unknown %d prim!\n",
+				__FUNCTION__, ev->ind_prim);
 			kfree_skb(skb);
-			sock_put(sk);
-			break;
-		default:
-			llc->sap->ind(ind_prim);
 		}
+		/* No indication */
+		break;
 	}
-	if (!cfm_prim)  /* confirmation not required */
-		goto out;
-	/* FIXME: see FIXMEs above */
-	switch (flag) {
-	case LLC_DATA_PRIM + 1:
+
+	switch (ev->cfm_prim) {
+	case LLC_DATA_PRIM:
 		if (!llc_data_accept_state(llc->state))
-			/* In this state, we can send I pdu */
 			sk->write_space(sk);
 		else
 			rc = llc->failed_data_req = 1;
 		break;
-	case LLC_CONN_PRIM + 1:
-		if (sk->type != SOCK_STREAM || sk->state != TCP_SYN_SENT)
-			goto out_kfree_skb;
-		if (status) {
-			sk->socket->state = SS_UNCONNECTED;
-			sk->state         = TCP_CLOSE;
-		} else {
-			sk->socket->state = SS_CONNECTED;
-			sk->state         = TCP_ESTABLISHED;
+	case LLC_CONN_PRIM:
+		if (sk->type == SOCK_STREAM && sk->state == TCP_SYN_SENT) {
+			if (ev->status) {
+				sk->socket->state = SS_UNCONNECTED;
+				sk->state         = TCP_CLOSE;
+			} else {
+				sk->socket->state = SS_CONNECTED;
+				sk->state         = TCP_ESTABLISHED;
+			}
+			sk->state_change(sk);
 		}
-		sk->state_change(sk);
 		break;
-	case LLC_DISC_PRIM + 1:
+	case LLC_DISC_PRIM:
 		sock_hold(sk);
-		if (sk->type != SOCK_STREAM || sk->state != TCP_CLOSING) {
-			sock_put(sk);
-			goto out_kfree_skb;
+		if (sk->type == SOCK_STREAM && sk->state == TCP_CLOSING) {
+			sk->socket->state = SS_UNCONNECTED;
+			sk->state         = TCP_CLOSE;
+			sk->state_change(sk);
 		}
-		sk->socket->state = SS_UNCONNECTED;
-		sk->state         = TCP_CLOSE;
-		sk->state_change(sk);
 		sock_put(sk);
 		break;
+	case LLC_RESET_PRIM:
+		/*
+		 * FIXME:
+		 * RESET is not being notified to upper layers for now
+		 */
+		printk(KERN_INFO "%s: received a reset conf!\n", __FUNCTION__);
+		break;
 	default:
-		llc->sap->conf(cfm_prim);
-		goto out;
+		if (ev->cfm_prim) {
+			printk(KERN_INFO "%s: received unknown %d prim!\n",
+					__FUNCTION__, ev->cfm_prim);
+			break;
+		}
+		goto out; /* No confirmation */
 	}
 out_kfree_skb:
 	kfree_skb(skb);
@@ -198,9 +208,7 @@ void llc_conn_rtn_pdu(struct sock *sk, struct sk_buff *skb)
 {
 	struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
-	/* FIXME: indicate that we should send this to the upper layer */
-	ev->flag     = LLC_DATA_PRIM + 1;
-	ev->ind_prim = (void *)1;
+	ev->ind_prim = LLC_DATA_PRIM;
 }
 
 /**
@@ -355,12 +363,14 @@ void llc_conn_free_ev(struct sk_buff *skb)
 		/* free the frame that is bound to this event */
 		struct llc_pdu_sn *pdu = llc_pdu_sn_hdr(skb);
 
-		if (LLC_PDU_TYPE_IS_I(pdu) || !ev->flag || !ev->ind_prim)
+		if (LLC_PDU_TYPE_IS_I(pdu) || !ev->ind_prim)
 			kfree_skb(skb);
 	} else if (ev->type == LLC_CONN_EV_TYPE_PRIM &&
-		   ev->data.prim.prim != LLC_DATA_PRIM)
+		   ev->prim != LLC_DATA_PRIM)
 		kfree_skb(skb);
-	else if (ev->type == LLC_CONN_EV_TYPE_P_TMR)
+	else if (ev->type == LLC_CONN_EV_TYPE_P_TMR ||
+		 ev->type == LLC_CONN_EV_TYPE_BUSY_TMR ||
+		 ev->type == LLC_CONN_EV_TYPE_REJ_TMR)
 		kfree_skb(skb);
 }
 
@@ -483,27 +493,21 @@ static int llc_exec_conn_trans_actions(struct sock *sk,
 struct sock *llc_lookup_established(struct llc_sap *sap, struct llc_addr *daddr,
 				    struct llc_addr *laddr)
 {
-	struct sock *rc = NULL;
-	struct list_head *entry;
+	struct sock *rc;
 
-	spin_lock_bh(&sap->sk_list.lock);
-	if (list_empty(&sap->sk_list.list))
-		goto out;
-	list_for_each(entry, &sap->sk_list.list) {
-		struct llc_opt *llc = list_entry(entry, struct llc_opt, node);
+	read_lock_bh(&sap->sk_list.lock);
+	for (rc = sap->sk_list.list; rc; rc = rc->next) {
+		struct llc_opt *llc = llc_sk(rc);
 
 		if (llc->laddr.lsap == laddr->lsap &&
 		    llc->daddr.lsap == daddr->lsap &&
 		    llc_mac_match(llc->laddr.mac, laddr->mac) &&
-		    llc_mac_match(llc->daddr.mac, daddr->mac)) {
-			rc = llc->sk;
+		    llc_mac_match(llc->daddr.mac, daddr->mac))
 			break;
-		}
 	}
 	if (rc)
 		sock_hold(rc);
-out:
-	spin_unlock_bh(&sap->sk_list.lock);
+	read_unlock_bh(&sap->sk_list.lock);
 	return rc;
 }
 
@@ -518,28 +522,49 @@ struct sock *llc_lookup_established(struct llc_sap *sap, struct llc_addr *daddr,
  */
 struct sock *llc_lookup_listener(struct llc_sap *sap, struct llc_addr *laddr)
 {
-	struct sock *rc = NULL;
-	struct list_head *entry;
+	struct sock *rc;
 
-	spin_lock_bh(&sap->sk_list.lock);
-	if (list_empty(&sap->sk_list.list))
-		goto out;
-	list_for_each(entry, &sap->sk_list.list) {
-		struct llc_opt *llc = list_entry(entry, struct llc_opt, node);
-
-		if (llc->sk->type != SOCK_STREAM || llc->sk->state != TCP_LISTEN ||
-		    llc->laddr.lsap != laddr->lsap ||
-		    !llc_mac_match(llc->laddr.mac, laddr->mac))
-			continue;
-		rc = llc->sk;
+	read_lock_bh(&sap->sk_list.lock);
+	for (rc = sap->sk_list.list; rc; rc = rc->next) {
+		struct llc_opt *llc = llc_sk(rc);
+
+		if (rc->type == SOCK_STREAM && rc->state == TCP_LISTEN &&
+		    llc->laddr.lsap == laddr->lsap &&
+		    llc_mac_match(llc->laddr.mac, laddr->mac))
+			break;
 	}
 	if (rc)
 		sock_hold(rc);
-out:
-	spin_unlock_bh(&sap->sk_list.lock);
+	read_unlock_bh(&sap->sk_list.lock);
 	return rc;
 }
 
+/**
+ *	llc_lookup_dgram - Finds dgram socket for the local sap/mac
+ *	@sap: SAP
+ *	@laddr: address of local LLC (MAC + SAP)
+ *
+ *	Search socket list of the SAP and finds connection using the local
+ *	mac, and local sap. Returns pointer for socket found, %NULL otherwise.
+ */
+struct sock *llc_lookup_dgram(struct llc_sap *sap, struct llc_addr *laddr)
+{
+	struct sock *rc;
+
+	read_lock_bh(&sap->sk_list.lock);
+	for (rc = sap->sk_list.list; rc; rc = rc->next) {
+		struct llc_opt *llc = llc_sk(rc);
+
+		if (rc->type == SOCK_DGRAM &&
+		    llc->laddr.lsap == laddr->lsap &&
+		    llc_mac_match(llc->laddr.mac, laddr->mac))
+			break;
+	}
+	if (rc)
+		sock_hold(rc);
+	read_unlock_bh(&sap->sk_list.lock);
+	return rc;
+}
 /**
  *	llc_data_accept_state - designates if in this state data can be sent.
  *	@state: state of connection.

net/llc/llc_evnt.c

@@ -29,7 +29,7 @@ int llc_stat_ev_enable_with_dup_addr_check(struct llc_station *station,
 	struct llc_station_state_ev *ev = llc_station_ev(skb);	
 	
 	return ev->type == LLC_STATION_EV_TYPE_SIMPLE &&
-	       ev->data.a.ev ==
+	       ev->prim_type ==
 	       		      LLC_STATION_EV_ENABLE_WITH_DUP_ADDR_CHECK ? 0 : 1;
 }
 
@@ -39,7 +39,7 @@ int llc_stat_ev_enable_without_dup_addr_check(struct llc_station *station,
 	struct llc_station_state_ev *ev = llc_station_ev(skb);	
 	
 	return ev->type == LLC_STATION_EV_TYPE_SIMPLE &&
-	       ev->data.a.ev ==
+	       ev->prim_type ==
 			LLC_STATION_EV_ENABLE_WITHOUT_DUP_ADDR_CHECK ? 0 : 1;
 }
 
@@ -120,6 +120,6 @@ int llc_stat_ev_disable_req(struct llc_station *station, struct sk_buff *skb)
 	struct llc_station_state_ev *ev = llc_station_ev(skb);
 
 	return ev->type == LLC_STATION_EV_TYPE_PRIM &&
-	       ev->data.prim.prim == LLC_DISABLE_PRIM &&
-	       ev->data.prim.type == LLC_PRIM_TYPE_REQ ? 0 : 1;
+	       ev->prim == LLC_DISABLE_PRIM &&
+	       ev->prim_type == LLC_PRIM_TYPE_REQ ? 0 : 1;
 }

net/llc/llc_if.c

@@ -30,17 +30,16 @@
 
 /**
  *	llc_sap_open - open interface to the upper layers.
- *	@nw_indicate: pointer to indicate function of upper layer.
- *	@nw_confirm: pointer to confirm function of upper layer.
  *	@lsap: SAP number.
- *	@sap: pointer to allocated SAP (output argument).
+ *	@func: rcv func for datalink protos
  *
  *	Interface function to upper layer. Each one who wants to get a SAP
  *	(for example NetBEUI) should call this function. Returns the opened
  *	SAP for success, NULL for failure.
  */
-struct llc_sap *llc_sap_open(llc_prim_call_t nw_indicate,
-			     llc_prim_call_t nw_confirm, u8 lsap)
+struct llc_sap *llc_sap_open(u8 lsap, int (*func)(struct sk_buff *skb,
+						  struct net_device *dev,
+						  struct packet_type *pt))
 {
 	/* verify this SAP is not already open; if so, return error */
 	struct llc_sap *sap;
@@ -57,9 +56,8 @@ struct llc_sap *llc_sap_open(llc_prim_call_t nw_indicate,
 		goto err;
 	/* allocated a SAP; initialize it and clear out its memory pool */
 	sap->laddr.lsap = lsap;
-	sap->ind = nw_indicate;
-	sap->conf = nw_confirm;
-	sap->parent_station = llc_station_get();
+	sap->rcv_func	= func;
+	sap->station	= llc_station_get();
 	/* initialized SAP; add it to list of SAPs this station manages */
 	llc_sap_save(sap);
 out:
@@ -99,24 +97,16 @@ void llc_sap_close(struct llc_sap *sap)
 void llc_build_and_send_ui_pkt(struct llc_sap *sap, struct sk_buff *skb,
 			       u8 *dmac, u8 dsap)
 {
-	union llc_u_prim_data prim_data;
-	struct llc_prim_if_block prim;
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
 
-	prim.data = &prim_data;
-	prim.sap  = sap;
-	prim.prim = LLC_DATAUNIT_PRIM;
+	ev->saddr.lsap = sap->laddr.lsap;
+	ev->daddr.lsap = dsap;
+	memcpy(ev->saddr.mac, skb->dev->dev_addr, IFHWADDRLEN);
+	memcpy(ev->daddr.mac, dmac, IFHWADDRLEN);
 
-	prim_data.udata.skb        = skb;
-	prim_data.udata.saddr.lsap = sap->laddr.lsap;
-	prim_data.udata.daddr.lsap = dsap;
-	memcpy(prim_data.udata.saddr.mac, skb->dev->dev_addr, IFHWADDRLEN);
-	memcpy(prim_data.udata.daddr.mac, dmac, IFHWADDRLEN);
-
-	ev->type	   = LLC_SAP_EV_TYPE_PRIM;
-	ev->data.prim.prim = LLC_DATAUNIT_PRIM;
-	ev->data.prim.type = LLC_PRIM_TYPE_REQ;
-	ev->data.prim.data = &prim;
+	ev->type      = LLC_SAP_EV_TYPE_PRIM;
+	ev->prim      = LLC_DATAUNIT_PRIM;
+	ev->prim_type = LLC_PRIM_TYPE_REQ;
 	llc_sap_state_process(sap, skb);
 }
 
@@ -130,27 +120,19 @@ void llc_build_and_send_ui_pkt(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, struct sk_buff *skb,
-				 u8 *dmac, u8 dsap)
+void llc_build_and_send_test_pkt(struct llc_sap *sap, 
+				 struct sk_buff *skb, u8 *dmac, u8 dsap)
 {
-	union llc_u_prim_data prim_data;
-	struct llc_prim_if_block prim;
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
 
-	prim.data = &prim_data;
-	prim.sap  = sap;
-	prim.prim = LLC_TEST_PRIM;
-
-	prim_data.test.skb        = skb;
-	prim_data.test.saddr.lsap = sap->laddr.lsap;
-	prim_data.test.daddr.lsap = dsap;
-	memcpy(prim_data.test.saddr.mac, skb->dev->dev_addr, IFHWADDRLEN);
-	memcpy(prim_data.test.daddr.mac, dmac, IFHWADDRLEN);
+	ev->saddr.lsap = sap->laddr.lsap;
+	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->data.prim.prim = LLC_TEST_PRIM;
-	ev->data.prim.type = LLC_PRIM_TYPE_REQ;
-	ev->data.prim.data = &prim;
+	ev->type      = LLC_SAP_EV_TYPE_PRIM;
+	ev->prim      = LLC_TEST_PRIM;
+	ev->prim_type = LLC_PRIM_TYPE_REQ;
 	llc_sap_state_process(sap, skb);
 }
 
@@ -167,24 +149,16 @@ void llc_build_and_send_test_pkt(struct llc_sap *sap, struct sk_buff *skb,
 void llc_build_and_send_xid_pkt(struct llc_sap *sap, struct sk_buff *skb,
 				u8 *dmac, u8 dsap)
 {
-	union llc_u_prim_data prim_data;
-	struct llc_prim_if_block prim;
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
 
-	prim.data = &prim_data;
-	prim.sap  = sap;
-	prim.prim = LLC_XID_PRIM;
-
-	prim_data.xid.skb        = skb;
-	prim_data.xid.saddr.lsap = sap->laddr.lsap;
-	prim_data.xid.daddr.lsap = dsap;
-	memcpy(prim_data.xid.saddr.mac, skb->dev->dev_addr, IFHWADDRLEN);
-	memcpy(prim_data.xid.daddr.mac, dmac, IFHWADDRLEN);
+	ev->saddr.lsap = sap->laddr.lsap;
+	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->data.prim.prim = LLC_XID_PRIM;
-	ev->data.prim.type = LLC_PRIM_TYPE_REQ;
-	ev->data.prim.data = &prim;
+	ev->type      = LLC_SAP_EV_TYPE_PRIM;
+	ev->prim      = LLC_XID_PRIM;
+	ev->prim_type = LLC_PRIM_TYPE_REQ;
 	llc_sap_state_process(sap, skb);
 }
 
@@ -219,11 +193,10 @@ int llc_build_and_send_pkt(struct sock *sk, struct sk_buff *skb)
 		goto out;
 	}
 	ev = llc_conn_ev(skb);
-	ev->type	    = LLC_CONN_EV_TYPE_PRIM;
-	ev->data.prim.prim  = LLC_DATA_PRIM;
-	ev->data.prim.type  = LLC_PRIM_TYPE_REQ;
-	ev->data.prim.data  = NULL;
-	skb->dev	    = llc->dev;
+	ev->type      = LLC_CONN_EV_TYPE_PRIM;
+	ev->prim      = LLC_DATA_PRIM;
+	ev->prim_type = LLC_PRIM_TYPE_REQ;
+	skb->dev      = llc->dev;
 	rc = llc_conn_state_process(sk, skb);
 out:
 	return rc;
@@ -268,10 +241,9 @@ int llc_establish_connection(struct sock *sk, u8 *lmac, u8 *dmac, u8 dsap)
 	if (skb) {
 		struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
-		ev->type	   = LLC_CONN_EV_TYPE_PRIM;
-		ev->data.prim.prim = LLC_CONN_PRIM;
-		ev->data.prim.type = LLC_PRIM_TYPE_REQ;
-		ev->data.prim.data = NULL;
+		ev->type      = LLC_CONN_EV_TYPE_PRIM;
+		ev->prim      = LLC_CONN_PRIM;
+		ev->prim_type = LLC_PRIM_TYPE_REQ;
 		rc = llc_conn_state_process(sk, skb);
 	}
 out_put:
@@ -306,12 +278,11 @@ int llc_send_disc(struct sock *sk)
 	skb = alloc_skb(0, GFP_ATOMIC);
 	if (!skb)
 		goto out;
-	sk->state	   = TCP_CLOSING;
-	ev		   = llc_conn_ev(skb);
-	ev->type	   = LLC_CONN_EV_TYPE_PRIM;
-	ev->data.prim.prim = LLC_DISC_PRIM;
-	ev->data.prim.type = LLC_PRIM_TYPE_REQ;
-	ev->data.prim.data = NULL;
+	sk->state     = TCP_CLOSING;
+	ev	      = llc_conn_ev(skb);
+	ev->type      = LLC_CONN_EV_TYPE_PRIM;
+	ev->prim      = LLC_DISC_PRIM;
+	ev->prim_type = LLC_PRIM_TYPE_REQ;
 	rc = llc_conn_state_process(sk, skb);
 out:
 	sock_put(sk);
@@ -327,8 +298,7 @@ int llc_send_disc(struct sock *sk)
  *	it to connection component state machine. Returns 0 for success, 1
  *	otherwise.
  */
-int llc_build_and_send_reset_pkt(struct sock *sk,
-				 struct llc_prim_if_block *prim)
+int llc_build_and_send_reset_pkt(struct sock *sk)
 {
 	int rc = 1;
 	struct sk_buff *skb = alloc_skb(0, GFP_ATOMIC);
@@ -336,10 +306,9 @@ int llc_build_and_send_reset_pkt(struct sock *sk,
 	if (skb) {
 		struct llc_conn_state_ev *ev = llc_conn_ev(skb);
 
-		ev->type = LLC_CONN_EV_TYPE_PRIM;
-		ev->data.prim.prim = LLC_RESET_PRIM;
-		ev->data.prim.type = LLC_PRIM_TYPE_REQ;
-		ev->data.prim.data = prim;
+		ev->type      = LLC_CONN_EV_TYPE_PRIM;
+		ev->prim      = LLC_RESET_PRIM;
+		ev->prim_type = LLC_PRIM_TYPE_REQ;
 		rc = llc_conn_state_process(sk, skb);
 	}
 	return rc;

net/llc/llc_mac.c

@@ -82,7 +82,7 @@ int mac_send_pdu(struct sk_buff *skb)
  *	data now), it queues this frame in the connection's backlog.
  */
 int llc_rcv(struct sk_buff *skb, struct net_device *dev,
-		 struct packet_type *pt)
+	    struct packet_type *pt)
 {
 	struct llc_sap *sap;
 	struct llc_pdu_sn *pdu;
@@ -113,8 +113,22 @@ int llc_rcv(struct sk_buff *skb, struct net_device *dev,
 	}
 	llc_decode_pdu_type(skb, &dest);
 	if (dest == LLC_DEST_SAP) { /* type 1 services */
-		dprintk("%s: calling llc_sap_rcv!\n", __FUNCTION__);
-		llc_sap_rcv(sap, skb);
+		if (sap->rcv_func)
+			sap->rcv_func(skb, dev, pt);
+		else {
+			struct llc_addr laddr;
+			struct sock *sk;
+
+			llc_pdu_decode_da(skb, laddr.mac);
+			llc_pdu_decode_dsap(skb, &laddr.lsap);
+
+			sk = llc_lookup_dgram(sap, &laddr);
+			if (!sk)
+				goto drop;
+			skb->sk = sk;
+			llc_sap_rcv(sap, skb);
+			sock_put(sk);
+		}
 	} else if (dest == LLC_DEST_CONN) {
 		struct llc_addr saddr, daddr;
 		struct sock *sk;

net/llc/llc_main.c

@@ -71,10 +71,6 @@ struct llc_sap *llc_sap_alloc(void)
 		sap->state = LLC_SAP_STATE_ACTIVE;
 		memcpy(sap->laddr.mac, llc_main_station.mac_sa, ETH_ALEN);
 		spin_lock_init(&sap->sk_list.lock);
-		INIT_LIST_HEAD(&sap->sk_list.list);
-		skb_queue_head_init(&sap->mac_pdu_q);
-		sap->llc_ind_prim.data = &sap->llc_ind_data_prim;
-		sap->llc_cfm_prim.data = &sap->llc_cfm_data_prim;
 	}
 	return sap;
 }
@@ -88,12 +84,10 @@ struct llc_sap *llc_sap_alloc(void)
  */
 void llc_free_sap(struct llc_sap *sap)
 {
-	struct llc_station *station = sap->parent_station;
-
 	llc_rtn_all_conns(sap);
-	spin_lock_bh(&station->sap_list.lock);
+	write_lock_bh(&sap->station->sap_list.lock);
 	list_del(&sap->node);
-	spin_unlock_bh(&station->sap_list.lock);
+	write_unlock_bh(&sap->station->sap_list.lock);
 	kfree(sap);
 }
 
@@ -105,9 +99,9 @@ void llc_free_sap(struct llc_sap *sap)
  */
 void llc_sap_save(struct llc_sap *sap)
 {
-	spin_lock_bh(&llc_main_station.sap_list.lock);
+	write_lock_bh(&llc_main_station.sap_list.lock);
 	list_add_tail(&sap->node, &llc_main_station.sap_list.list);
-	spin_unlock_bh(&llc_main_station.sap_list.lock);
+	write_unlock_bh(&llc_main_station.sap_list.lock);
 }
 
 /**
@@ -122,7 +116,7 @@ struct llc_sap *llc_sap_find(u8 sap_value)
 	struct llc_sap* sap = NULL;
 	struct list_head *entry;
 
-	spin_lock_bh(&llc_main_station.sap_list.lock);
+	read_lock_bh(&llc_main_station.sap_list.lock);
 	list_for_each(entry, &llc_main_station.sap_list.list) {
 		sap = list_entry(entry, struct llc_sap, node);
 		if (sap->laddr.lsap == sap_value)
@@ -130,7 +124,7 @@ struct llc_sap *llc_sap_find(u8 sap_value)
 	}
 	if (entry == &llc_main_station.sap_list.list) /* not found */
 		sap = NULL;
-	spin_unlock_bh(&llc_main_station.sap_list.lock);
+	read_unlock_bh(&llc_main_station.sap_list.lock);
 	return sap;
 }
 
@@ -328,20 +322,18 @@ void llc_sk_reset(struct sock *sk)
 static int llc_rtn_all_conns(struct llc_sap *sap)
 {
 	int rc = 0;
-	struct list_head *entry, *tmp;
+	struct sock *sk;
 
-	spin_lock_bh(&sap->sk_list.lock);
-	if (list_empty(&sap->sk_list.list))
-		goto out;
-	list_for_each_safe(entry, tmp, &sap->sk_list.list) {
-		struct llc_opt *llc = list_entry(entry, struct llc_opt, node);
+	write_lock_bh(&sap->sk_list.lock);
+
+	for (sk = sap->sk_list.list; sk; sk = sk->next) {
+		llc_sk(sk)->state = LLC_CONN_STATE_TEMP;
 
-		llc->state = LLC_CONN_STATE_TEMP;
-		if (llc_send_disc(llc->sk))
+		if (llc_send_disc(sk))
 			rc = 1;
 	}
-out:
-	spin_unlock_bh(&sap->sk_list.lock);
+
+	write_unlock_bh(&sap->sk_list.lock);
 	return rc;
 }
 
@@ -564,19 +556,19 @@ static char *llc_conn_state_names[] = {
 
 static int llc_proc_get_info(char *bf, char **start, off_t offset, int length)
 {
-	struct llc_opt *llc;
-	struct list_head *sap_entry, *llc_entry;
+	struct list_head *sap_entry;
+	struct sock *sk;
 	off_t begin = 0, pos = 0;
 	int len = 0;
 
-	spin_lock_bh(&llc_main_station.sap_list.lock);
+	read_lock_bh(&llc_main_station.sap_list.lock);
 	list_for_each(sap_entry, &llc_main_station.sap_list.list) {
 		struct llc_sap *sap = list_entry(sap_entry, struct llc_sap,
 						 node);
 
 		len += sprintf(bf + len, "lsap=%02X\n", sap->laddr.lsap);
-		spin_lock_bh(&sap->sk_list.lock);
-		if (list_empty(&sap->sk_list.list)) {
+		read_lock_bh(&sap->sk_list.lock);
+		if (!sap->sk_list.list) {
 			len += sprintf(bf + len, "no connections\n");
 			goto unlock;
 		}
@@ -584,8 +576,9 @@ static int llc_proc_get_info(char *bf, char **start, off_t offset, int length)
 					 "dsap state      retr txw rxw "
 					 "pf ff sf df rs cs "
 					 "tack tpfc trs tbs blog busr\n");
-		list_for_each(llc_entry, &sap->sk_list.list) {
-			llc = list_entry(llc_entry, struct llc_opt, node);
+		for (sk = sap->sk_list.list; sk; sk = sk->next) {
+			struct llc_opt *llc = llc_sk(sk);
+
 			len += sprintf(bf + len, " %02X  %-10s %3d  %3d %3d "
 						 "%2d %2d %2d "
 						 "%2d %2d %2d "
@@ -600,11 +593,10 @@ static int llc_proc_get_info(char *bf, char **start, off_t offset, int length)
 				       timer_pending(&llc->pf_cycle_timer.timer),
 				       timer_pending(&llc->rej_sent_timer.timer),
 				       timer_pending(&llc->busy_state_timer.timer),
-				       !!llc->sk->backlog.tail,
-				       llc->sk->lock.users);
+				       !!sk->backlog.tail, sk->lock.users);
 		}
 unlock:	
-		spin_unlock_bh(&sap->sk_list.lock);
+		read_unlock_bh(&sap->sk_list.lock);
 		pos = begin + len;
 		if (pos < offset) {
 			len = 0; /* Keep dumping into the buffer start */
@@ -613,7 +605,7 @@ static int llc_proc_get_info(char *bf, char **start, off_t offset, int length)
 		if (pos > offset + length) /* We have dumped enough */
 			break;
 	}
-	spin_unlock_bh(&llc_main_station.sap_list.lock);
+	read_unlock_bh(&llc_main_station.sap_list.lock);
 
 	/* The data in question runs from begin to begin + len */
 	*start = bf + (offset - begin); /* Start of wanted data */
@@ -634,8 +626,8 @@ static struct packet_type llc_tr_packet_type = {
 };
 
 static char llc_banner[] __initdata =
-		KERN_INFO "LLC 2.0 by Procom, 1997, Arnaldo C. Melo, 2001\n"
-		KERN_INFO "NET4.0 IEEE 802.2 extended support\n";
+		KERN_INFO "LLC 2.0 by Procom, 1997, Arnaldo C. Melo, 2001, 2002\n"
+		KERN_INFO "NET 4.0 IEEE 802.2 extended support\n";
 static char llc_error_msg[] __initdata =
 		KERN_ERR "LLC install NOT successful.\n";
 
@@ -669,7 +661,7 @@ static int __init llc_init(void)
 	llc_main_station.maximum_retry	= 1;
 	llc_main_station.state		= LLC_STATION_STATE_DOWN;
 	ev->type	= LLC_STATION_EV_TYPE_SIMPLE;
-	ev->data.a.ev	= LLC_STATION_EV_ENABLE_WITHOUT_DUP_ADDR_CHECK;
+	ev->prim_type	= LLC_STATION_EV_ENABLE_WITHOUT_DUP_ADDR_CHECK;
 	rc = llc_station_next_state(&llc_main_station, skb);
 	proc_net_create("802.2", 0, llc_proc_get_info);
 	llc_ui_init();
@@ -695,5 +687,5 @@ module_init(llc_init);
 module_exit(llc_exit);
 
 MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Procom, 1997, Arnaldo C. Melo, Jay Schullist, 2001");
+MODULE_AUTHOR("Procom, 1997, Arnaldo C. Melo, Jay Schullist, 2001, 2002");
 MODULE_DESCRIPTION("LLC 2.0, NET4.0 IEEE 802.2 extended support");

net/llc/llc_s_ac.c

@@ -51,14 +51,12 @@ int llc_sap_action_unitdata_ind(struct llc_sap *sap, struct sk_buff *skb)
 int llc_sap_action_send_ui(struct llc_sap *sap, struct sk_buff *skb)
 {
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
-	struct llc_prim_if_block *prim = ev->data.prim.data;
-	struct llc_prim_unit_data *prim_data = &prim->data->udata;
 	int rc;
 
-	llc_pdu_header_init(skb, LLC_PDU_TYPE_U, prim_data->saddr.lsap,
-			    prim_data->daddr.lsap, LLC_PDU_CMD);
+	llc_pdu_header_init(skb, LLC_PDU_TYPE_U, ev->saddr.lsap,
+			    ev->daddr.lsap, LLC_PDU_CMD);
 	llc_pdu_init_as_ui_cmd(skb);
-	rc = lan_hdrs_init(skb, prim_data->saddr.mac, prim_data->daddr.mac);
+	rc = lan_hdrs_init(skb, ev->saddr.mac, ev->daddr.mac);
 	if (!rc)
 		llc_sap_send_pdu(sap, skb);
 	return rc;
@@ -76,14 +74,12 @@ int llc_sap_action_send_ui(struct llc_sap *sap, struct sk_buff *skb)
 int llc_sap_action_send_xid_c(struct llc_sap *sap, struct sk_buff *skb)
 {
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
-	struct llc_prim_if_block *prim = ev->data.prim.data;
-	struct llc_prim_xid *prim_data = &prim->data->xid;
 	int rc;
 
-	llc_pdu_header_init(skb, LLC_PDU_TYPE_U, prim_data->saddr.lsap,
-			    prim_data->daddr.lsap, LLC_PDU_CMD);
+	llc_pdu_header_init(skb, LLC_PDU_TYPE_U, ev->saddr.lsap,
+			    ev->daddr.lsap, LLC_PDU_CMD);
 	llc_pdu_init_as_xid_cmd(skb, LLC_XID_NULL_CLASS_2, 0);
-	rc = lan_hdrs_init(skb, prim_data->saddr.mac, prim_data->daddr.mac);
+	rc = lan_hdrs_init(skb, ev->saddr.mac, ev->daddr.mac);
 	if (!rc)
 		llc_sap_send_pdu(sap, skb);
 	return rc;
@@ -132,14 +128,12 @@ int llc_sap_action_send_xid_r(struct llc_sap *sap, struct sk_buff *skb)
 int llc_sap_action_send_test_c(struct llc_sap *sap, struct sk_buff *skb)
 {
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
-	struct llc_prim_if_block *prim = ev->data.prim.data;
-	struct llc_prim_test *prim_data = &prim->data->test;
 	int rc;
 
-	llc_pdu_header_init(skb, LLC_PDU_TYPE_U, prim_data->saddr.lsap,
-			    prim_data->daddr.lsap, LLC_PDU_CMD);
+	llc_pdu_header_init(skb, LLC_PDU_TYPE_U, ev->saddr.lsap,
+			    ev->daddr.lsap, LLC_PDU_CMD);
 	llc_pdu_init_as_test_cmd(skb);
-	rc = lan_hdrs_init(skb, prim_data->saddr.mac, prim_data->daddr.mac);
+	rc = lan_hdrs_init(skb, ev->saddr.mac, ev->daddr.mac);
 	if (!rc)
 		llc_sap_send_pdu(sap, skb);
 	return rc;

net/llc/llc_s_ev.c

@@ -25,7 +25,7 @@ int llc_sap_ev_activation_req(struct llc_sap *sap, struct sk_buff *skb)
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
 
 	return ev->type == LLC_SAP_EV_TYPE_SIMPLE &&
-	       ev->data.a.ev == LLC_SAP_EV_ACTIVATION_REQ ? 0 : 1;
+	       ev->prim_type == LLC_SAP_EV_ACTIVATION_REQ ? 0 : 1;
 }
 
 int llc_sap_ev_rx_ui(struct llc_sap *sap, struct sk_buff *skb)
@@ -43,8 +43,8 @@ int llc_sap_ev_unitdata_req(struct llc_sap *sap, struct sk_buff *skb)
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
 
 	return ev->type == LLC_SAP_EV_TYPE_PRIM &&
-	       ev->data.prim.prim == LLC_DATAUNIT_PRIM &&
-	       ev->data.prim.type == LLC_PRIM_TYPE_REQ ? 0 : 1;
+	       ev->prim == LLC_DATAUNIT_PRIM &&
+	       ev->prim_type == LLC_PRIM_TYPE_REQ ? 0 : 1;
 
 }
 
@@ -53,8 +53,8 @@ int llc_sap_ev_xid_req(struct llc_sap *sap, struct sk_buff *skb)
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
 
 	return ev->type == LLC_SAP_EV_TYPE_PRIM &&
-	       ev->data.prim.prim == LLC_XID_PRIM &&
-	       ev->data.prim.type == LLC_PRIM_TYPE_REQ ? 0 : 1;
+	       ev->prim == LLC_XID_PRIM &&
+	       ev->prim_type == LLC_PRIM_TYPE_REQ ? 0 : 1;
 }
 
 int llc_sap_ev_rx_xid_c(struct llc_sap *sap, struct sk_buff *skb)
@@ -82,8 +82,8 @@ int llc_sap_ev_test_req(struct llc_sap *sap, struct sk_buff *skb)
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
 
 	return ev->type == LLC_SAP_EV_TYPE_PRIM &&
-	       ev->data.prim.prim == LLC_TEST_PRIM &&
-	       ev->data.prim.type == LLC_PRIM_TYPE_REQ ? 0 : 1;
+	       ev->prim == LLC_TEST_PRIM &&
+	       ev->prim_type == LLC_PRIM_TYPE_REQ ? 0 : 1;
 }
 
 int llc_sap_ev_rx_test_c(struct llc_sap *sap, struct sk_buff *skb)
@@ -111,5 +111,5 @@ int llc_sap_ev_deactivation_req(struct llc_sap *sap, struct sk_buff *skb)
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
 
 	return ev->type == LLC_SAP_EV_TYPE_SIMPLE &&
-	       ev->data.a.ev == LLC_SAP_EV_DEACTIVATION_REQ ? 0 : 1;
+	       ev->prim_type == LLC_SAP_EV_DEACTIVATION_REQ ? 0 : 1;
 }

net/llc/llc_sap.c

@@ -18,6 +18,7 @@
 #include <net/llc_s_ac.h>
 #include <net/llc_s_st.h>
 #include <net/sock.h>
+#include <linux/tcp.h>
 #include <net/llc_main.h>
 #include <net/llc_mac.h>
 #include <net/llc_pdu.h>
@@ -39,11 +40,15 @@ static struct llc_sap_state_trans *llc_find_sap_trans(struct llc_sap *sap,
  */
 void llc_sap_assign_sock(struct llc_sap *sap, struct sock *sk)
 {
-	spin_lock_bh(&sap->sk_list.lock);
+	write_lock_bh(&sap->sk_list.lock);
 	llc_sk(sk)->sap = sap;
-	list_add_tail(&llc_sk(sk)->node, &sap->sk_list.list);
+	sk->next = sap->sk_list.list;
+	if (sk->next)
+		sap->sk_list.list->pprev = &sk->next;
+	sap->sk_list.list = sk;
+	sk->pprev = &sap->sk_list.list;
 	sock_hold(sk);
-	spin_unlock_bh(&sap->sk_list.lock);
+	write_unlock_bh(&sap->sk_list.lock);
 }
 
 /**
@@ -55,29 +60,54 @@ void llc_sap_assign_sock(struct llc_sap *sap, struct sock *sk)
  */
 void llc_sap_unassign_sock(struct llc_sap *sap, struct sock *sk)
 {
-	spin_lock_bh(&sap->sk_list.lock);
-	list_del(&llc_sk(sk)->node);
-	sock_put(sk);
-	spin_unlock_bh(&sap->sk_list.lock);
+	write_lock_bh(&sap->sk_list.lock);
+	if (sk->pprev) {
+		if (sk->next)
+			sk->next->pprev = sk->pprev;
+		*sk->pprev = sk->next;
+		sk->pprev  = NULL;
+		/*
+		 * This only makes sense if the socket was inserted on the
+		 * list, if sk->pprev is NULL it wasn't
+		 */
+		sock_put(sk);
+	}
+	write_unlock_bh(&sap->sk_list.lock);
 }
 
 /**
  *	llc_sap_state_process - sends event to SAP state machine
- *	@sap: pointer to SAP
+ *	@sap: sap to use
  *	@skb: pointer to occurred event
  *
  *	After executing actions of the event, upper layer will be indicated
- *	if needed(on receiving an UI frame).
+ *	if needed(on receiving an UI frame). sk can be null for the
+ *	datalink_proto case.
  */
 void llc_sap_state_process(struct llc_sap *sap, struct sk_buff *skb)
 {
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
 
+	/*
+	 * We have to hold the skb, because llc_sap_next_state
+	 * will kfree it in the sending path and we need to
+	 * look at the skb->cb, where we encode llc_sap_state_ev.
+	 */
+	skb_get(skb);
+	ev->ind_cfm_flag = 0;
 	llc_sap_next_state(sap, skb);
-	if (ev->ind_cfm_flag == LLC_IND)
-		sap->ind(ev->prim);
-	else if (ev->type == LLC_SAP_EV_TYPE_PDU)
-		kfree_skb(skb);
+	if (ev->ind_cfm_flag == LLC_IND) {
+		if (skb->sk->state == TCP_LISTEN)
+			kfree_skb(skb);
+		else {
+			llc_save_primitive(skb, ev->prim);
+
+			/* queue skb to the user. */
+			if (sock_queue_rcv_skb(skb->sk, skb))
+				kfree_skb(skb);
+		}
+	} 
+	kfree_skb(skb);
 }
 
 /**
@@ -89,43 +119,17 @@ void llc_sap_rtn_pdu(struct llc_sap *sap, struct sk_buff *skb)
 {
 	struct llc_pdu_un *pdu;
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
-	struct llc_prim_if_block *prim = &sap->llc_ind_prim;
-	union llc_u_prim_data *prim_data = prim->data;
-	u8 lfb;
 
-	llc_pdu_decode_sa(skb, prim_data->udata.saddr.mac);
-	llc_pdu_decode_da(skb, prim_data->udata.daddr.mac);
-	llc_pdu_decode_dsap(skb, &prim_data->udata.daddr.lsap);
-	llc_pdu_decode_ssap(skb, &prim_data->udata.saddr.lsap);
-	prim_data->udata.pri = 0;
-	prim_data->udata.skb = skb;
 	pdu = llc_pdu_un_hdr(skb);
 	switch (LLC_U_PDU_RSP(pdu)) {
-		case LLC_1_PDU_CMD_TEST:
-			prim->prim = LLC_TEST_PRIM;
-			break;
-		case LLC_1_PDU_CMD_XID:
-			prim->prim = LLC_XID_PRIM;
-			break;
-		case LLC_1_PDU_CMD_UI:
-			if (skb->protocol == ntohs(ETH_P_TR_802_2)) {
-				if (((struct trh_hdr *)skb->mac.raw)->rcf) {
-					lfb = ntohs(((struct trh_hdr *)
-						    skb->mac.raw)->rcf) &
-						    0x0070;
-					prim_data->udata.lfb = lfb >> 4;
-				} else {
-					lfb = 0xFF;
-					prim_data->udata.lfb = 0xFF;
-				}
-			}
-			prim->prim = LLC_DATAUNIT_PRIM;
-			break;
+	case LLC_1_PDU_CMD_TEST:
+		ev->prim = LLC_TEST_PRIM;	break;
+	case LLC_1_PDU_CMD_XID:
+		ev->prim = LLC_XID_PRIM;	break;
+	case LLC_1_PDU_CMD_UI:
+		ev->prim = LLC_DATAUNIT_PRIM;	break;
 	}
-	prim->data = prim_data;
-	prim->sap = sap;
 	ev->ind_cfm_flag = LLC_IND;
-	ev->prim = prim;
 }
 
 /**