net: rmnet_data: Add snapshot of rmnet_data driver
This is a snapshot of the rmnet_data driver taken as of msm-4.4.
commit 5da00923b1544ba ("rmnet_data: Changing format specifier to
%pK").
Additionally, fix some style issues reported by checkpatch.
CRs-Fixed: 1078373
Change-Id: Idb2df22e61803e04a01db64ea5e9d1e93ae92e09
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
diff --git a/net/rmnet_data/rmnet_data_config.h b/net/rmnet_data/rmnet_data_config.h
new file mode 100644
index 0000000..3e356c0
--- /dev/null
+++ b/net/rmnet_data/rmnet_data_config.h
@@ -0,0 +1,128 @@
+/* Copyright (c) 2013-2014, 2016 The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * RMNET Data configuration engine
+ */
+
+#include <linux/types.h>
+#include <linux/time.h>
+#include <linux/spinlock.h>
+#include <net/rmnet_config.h>
+
+#ifndef _RMNET_DATA_CONFIG_H_
+#define _RMNET_DATA_CONFIG_H_
+
+#define RMNET_DATA_MAX_LOGICAL_EP 256
+
+/**
+ * struct rmnet_logical_ep_conf_s - Logical end-point configuration
+ *
+ * @refcount: Reference count for this endpoint. 0 signifies the endpoint is not
+ * configured for use
+ * @rmnet_mode: Specifies how the traffic should be finally delivered. Possible
+ * options are available in enum rmnet_config_endpoint_modes_e
+ * @mux_id: Virtual channel ID used by MAP protocol
+ * @egress_dev: Next device to deliver the packet to. Exact usage of this
+ * parmeter depends on the rmnet_mode
+ */
+struct rmnet_logical_ep_conf_s {
+ u8 refcount;
+ u8 rmnet_mode;
+ u8 mux_id;
+ struct timespec flush_time;
+ struct net_device *egress_dev;
+};
+
+/**
+ * struct rmnet_phys_ep_conf_s - Physical endpoint configuration
+ * One instance of this structure is instantiated for each net_device associated
+ * with rmnet_data.
+ *
+ * @dev: The device which is associated with rmnet_data. Corresponds to this
+ * specific instance of rmnet_phys_ep_conf_s
+ * @local_ep: Default non-muxed endpoint. Used for non-MAP protocols/formats
+ * @muxed_ep: All multiplexed logical endpoints associated with this device
+ * @ingress_data_format: RMNET_INGRESS_FORMAT_* flags from rmnet_data.h
+ * @egress_data_format: RMNET_EGRESS_FORMAT_* flags from rmnet_data.h
+ *
+ * @egress_agg_size: Maximum size (bytes) of data which should be aggregated
+ * @egress_agg_count: Maximum count (packets) of data which should be aggregated
+ * Smaller of the two parameters above are chosen for
+ * aggregation
+ * @tail_spacing: Guaranteed padding (bytes) when de-aggregating ingress frames
+ * @agg_time: Wall clock time when aggregated frame was created
+ * @agg_last: Last time the aggregation routing was invoked
+ */
+struct rmnet_phys_ep_config {
+ struct net_device *dev;
+ struct rmnet_logical_ep_conf_s local_ep;
+ struct rmnet_logical_ep_conf_s muxed_ep[RMNET_DATA_MAX_LOGICAL_EP];
+ u32 ingress_data_format;
+ u32 egress_data_format;
+
+ /* MAP specific */
+ u16 egress_agg_size;
+ u16 egress_agg_count;
+ u8 tail_spacing;
+ /* MAP aggregation state machine
+ * - This is not sctrictly configuration and is updated at runtime
+ * Make sure all of these are protected by the agg_lock
+ */
+ spinlock_t agg_lock;
+ struct sk_buff *agg_skb;
+ u8 agg_state;
+ u8 agg_count;
+ struct timespec agg_time;
+ struct timespec agg_last;
+};
+
+int rmnet_config_init(void);
+void rmnet_config_exit(void);
+
+int rmnet_unassociate_network_device(struct net_device *dev);
+int rmnet_set_ingress_data_format(struct net_device *dev,
+ u32 ingress_data_format,
+ u8 tail_spacing);
+int rmnet_set_egress_data_format(struct net_device *dev,
+ u32 egress_data_format,
+ u16 agg_size,
+ u16 agg_count);
+int rmnet_associate_network_device(struct net_device *dev);
+int _rmnet_set_logical_endpoint_config
+ (struct net_device *dev, int config_id,
+ struct rmnet_logical_ep_conf_s *epconfig);
+int rmnet_set_logical_endpoint_config(struct net_device *dev,
+ int config_id,
+ u8 rmnet_mode,
+ struct net_device *egress_dev);
+int _rmnet_unset_logical_endpoint_config(struct net_device *dev,
+ int config_id);
+int rmnet_unset_logical_endpoint_config(struct net_device *dev,
+ int config_id);
+int _rmnet_get_logical_endpoint_config
+ (struct net_device *dev, int config_id,
+ struct rmnet_logical_ep_conf_s *epconfig);
+int rmnet_get_logical_endpoint_config(struct net_device *dev,
+ int config_id,
+ u8 *rmnet_mode,
+ u8 *egress_dev_name,
+ size_t egress_dev_name_size);
+void rmnet_config_netlink_msg_handler (struct sk_buff *skb);
+int rmnet_config_notify_cb(struct notifier_block *nb,
+ unsigned long event, void *data);
+int rmnet_create_vnd(int id);
+int rmnet_create_vnd_prefix(int id, const char *name);
+int rmnet_free_vnd(int id);
+
+struct rmnet_phys_ep_config *_rmnet_get_phys_ep_config
+ (struct net_device *dev);
+
+#endif /* _RMNET_DATA_CONFIG_H_ */