[LLC]: station source mac address

kill unnecessary llc_station_mac_sa.

Signed-off-by: Joonwoo Park <joonwpark81@gmail.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 4 insertions, 11 deletions

diff --git a/include/net/llc.h b/include/net/llc.h
index f5024583fc8b..7940da1606e7 100644
--- a/include/net/llc.h
+++ b/include/net/llc.h
@@ -65,7 +65,6 @@ struct llc_sap {
 
 extern struct list_head llc_sap_list;
 extern rwlock_t llc_sap_list_lock;
-extern unsigned char llc_station_mac_sa[ETH_ALEN];
 
 extern int llc_rcv(struct sk_buff *skb, struct net_device *dev,
                    struct packet_type *pt, struct net_device *orig_dev);
diff --git a/net/llc/llc_core.c b/net/llc/llc_core.c
index 248b5903bb13..00de27cef46b 100644
--- a/net/llc/llc_core.c
+++ b/net/llc/llc_core.c
@@ -25,8 +25,6 @@
 LIST_HEAD(llc_sap_list);
 DEFINE_RWLOCK(llc_sap_list_lock);
 
-unsigned char llc_station_mac_sa[ETH_ALEN];
-
 /**
  *      llc_sap_alloc - allocates and initializes sap.
  *
@@ -37,8 +35,8 @@ static struct llc_sap *llc_sap_alloc(void)
         struct llc_sap *sap = kzalloc(sizeof(*sap), GFP_ATOMIC);
 
         if (sap) {
+                /* sap->laddr.mac - leave as a null, it's filled by bind */
                 sap->state = LLC_SAP_STATE_ACTIVE;
-                memcpy(sap->laddr.mac, llc_station_mac_sa, ETH_ALEN);
                 rwlock_init(&sap->sk_list.lock);
                 atomic_set(&sap->refcnt, 1);
         }
@@ -167,10 +165,6 @@ static int __init llc_init(void)
         if (dev != NULL)
                 dev = next_net_device(dev);
 
-        if (dev != NULL)
-                memcpy(llc_station_mac_sa, dev->dev_addr, ETH_ALEN);
-        else
-                memset(llc_station_mac_sa, 0, ETH_ALEN);
         dev_add_pack(&llc_packet_type);
         dev_add_pack(&llc_tr_packet_type);
         return 0;
diff --git a/net/llc/llc_station.c b/net/llc/llc_station.c
index 6f2ea2090322..959e7f31833b 100644
--- a/net/llc/llc_station.c
+++ b/net/llc/llc_station.c
@@ -259,7 +259,7 @@ static int llc_station_ac_send_null_dsap_xid_c(struct sk_buff *skb)
                 goto out;
         llc_pdu_header_init(nskb, LLC_PDU_TYPE_U, 0, 0, LLC_PDU_CMD);
         llc_pdu_init_as_xid_cmd(nskb, LLC_XID_NULL_CLASS_2, 127);
-        rc = llc_mac_hdr_init(nskb, llc_station_mac_sa, llc_station_mac_sa);
+        rc = llc_mac_hdr_init(nskb, skb->dev->dev_addr, skb->dev->dev_addr);
         if (unlikely(rc))
                 goto free;
         llc_station_send_pdu(nskb);
@@ -283,7 +283,7 @@ static int llc_station_ac_send_xid_r(struct sk_buff *skb)
         llc_pdu_decode_ssap(skb, &dsap);
         llc_pdu_header_init(nskb, LLC_PDU_TYPE_U, 0, dsap, LLC_PDU_RSP);
         llc_pdu_init_as_xid_rsp(nskb, LLC_XID_NULL_CLASS_2, 127);
-        rc = llc_mac_hdr_init(nskb, llc_station_mac_sa, mac_da);
+        rc = llc_mac_hdr_init(nskb, skb->dev->dev_addr, mac_da);
         if (unlikely(rc))
                 goto free;
         llc_station_send_pdu(nskb);
@@ -307,7 +307,7 @@ static int llc_station_ac_send_test_r(struct sk_buff *skb)
         llc_pdu_decode_ssap(skb, &dsap);
         llc_pdu_header_init(nskb, LLC_PDU_TYPE_U, 0, dsap, LLC_PDU_RSP);
         llc_pdu_init_as_test_rsp(nskb, skb);
-        rc = llc_mac_hdr_init(nskb, llc_station_mac_sa, mac_da);
+        rc = llc_mac_hdr_init(nskb, skb->dev->dev_addr, mac_da);
         if (unlikely(rc))
                 goto free;
         llc_station_send_pdu(nskb);