Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 97 insertions, 0 deletions

diff --git a/net/atm/lec_arpc.h b/net/atm/lec_arpc.h
new file mode 100644
index 000000000..1205d8792
--- /dev/null
+++ b/net/atm/lec_arpc.h
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Lec arp cache
+ *
+ * Marko Kiiskila <mkiiskila@yahoo.com>
+ */
+#ifndef _LEC_ARP_H_
+#define _LEC_ARP_H_
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/if_ether.h>
+#include <linux/atmlec.h>
+
+struct lec_arp_table {
+	struct hlist_node next;		/* Linked entry list */
+	unsigned char atm_addr[ATM_ESA_LEN];	/* Atm address */
+	unsigned char mac_addr[ETH_ALEN];	/* Mac address */
+	int is_rdesc;			/* Mac address is a route descriptor */
+	struct atm_vcc *vcc;		/* Vcc this entry is attached */
+	struct atm_vcc *recv_vcc;	/* Vcc we receive data from */
+
+	void (*old_push) (struct atm_vcc *vcc, struct sk_buff *skb);
+					/* Push that leads to daemon */
+
+	void (*old_recv_push) (struct atm_vcc *vcc, struct sk_buff *skb);
+					/* Push that leads to daemon */
+
+	unsigned long last_used;	/* For expiry */
+	unsigned long timestamp;	/* Used for various timestamping things:
+					 * 1. FLUSH started
+					 *    (status=ESI_FLUSH_PENDING)
+					 * 2. Counting to
+					 *    max_unknown_frame_time
+					 *    (status=ESI_ARP_PENDING||
+					 *     status=ESI_VC_PENDING)
+					 */
+	unsigned char no_tries;		/* No of times arp retry has been tried */
+	unsigned char status;		/* Status of this entry */
+	unsigned short flags;		/* Flags for this entry */
+	unsigned short packets_flooded;	/* Data packets flooded */
+	unsigned long flush_tran_id;	/* Transaction id in flush protocol */
+	struct timer_list timer;	/* Arping timer */
+	struct lec_priv *priv;		/* Pointer back */
+	u8 *tlvs;
+	u32 sizeoftlvs;			/*
+					 * LANE2: Each MAC address can have TLVs
+					 * associated with it.  sizeoftlvs tells the
+					 * the length of the tlvs array
+					 */
+	struct sk_buff_head tx_wait;	/* wait queue for outgoing packets */
+	refcount_t usage;		/* usage count */
+};
+
+/*
+ * LANE2: Template tlv struct for accessing
+ * the tlvs in the lec_arp_table->tlvs array
+ */
+struct tlv {
+	u32 type;
+	u8 length;
+	u8 value[255];
+};
+
+/* Status fields */
+#define ESI_UNKNOWN 0		/*
+				 * Next packet sent to this mac address
+				 * causes ARP-request to be sent
+				 */
+#define ESI_ARP_PENDING 1	/*
+				 * There is no ATM address associated with this
+				 * 48-bit address.  The LE-ARP protocol is in
+				 * progress.
+				 */
+#define ESI_VC_PENDING 2	/*
+				 * There is a valid ATM address associated with
+				 * this 48-bit address but there is no VC set
+				 * up to that ATM address.  The signaling
+				 * protocol is in process.
+				 */
+#define ESI_FLUSH_PENDING 4	/*
+				 * The LEC has been notified of the FLUSH_START
+				 * status and it is assumed that the flush
+				 * protocol is in process.
+				 */
+#define ESI_FORWARD_DIRECT 5	/*
+				 * Either the Path Switching Delay (C22) has
+				 * elapsed or the LEC has notified the Mapping
+				 * that the flush protocol has completed.  In
+				 * either case, it is safe to forward packets
+				 * to this address via the data direct VC.
+				 */
+
+/* Flag values */
+#define LEC_REMOTE_FLAG      0x0001
+#define LEC_PERMANENT_FLAG   0x0002
+
+#endif /* _LEC_ARP_H_ */