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119 lines
3.5 KiB
119 lines
3.5 KiB
/* Copyright (c) 2014, 2016 The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*
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* RMNET Data statistics
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/export.h>
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#include <linux/skbuff.h>
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#include <linux/spinlock.h>
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#include <linux/netdevice.h>
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#include <net/rmnet_config.h>
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#include "rmnet_data_private.h"
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#include "rmnet_data_stats.h"
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#include "rmnet_data_config.h"
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#include "rmnet_map.h"
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enum rmnet_deagg_e {
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RMNET_STATS_AGG_BUFF,
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RMNET_STATS_AGG_PKT,
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RMNET_STATS_AGG_MAX
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};
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static DEFINE_SPINLOCK(rmnet_skb_free_lock);
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unsigned long int skb_free[RMNET_STATS_SKBFREE_MAX];
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module_param_array(skb_free, ulong, 0, 0444);
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MODULE_PARM_DESC(skb_free, "SKBs dropped or freed");
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static DEFINE_SPINLOCK(rmnet_queue_xmit_lock);
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unsigned long int queue_xmit[RMNET_STATS_QUEUE_XMIT_MAX * 2];
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module_param_array(queue_xmit, ulong, 0, 0444);
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MODULE_PARM_DESC(queue_xmit, "SKBs queued for transmit");
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static DEFINE_SPINLOCK(rmnet_agg_count);
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unsigned long int agg_count[RMNET_STATS_AGG_MAX];
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module_param_array(agg_count, ulong, 0, 0444);
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MODULE_PARM_DESC(agg_count, "SKBs Aggregated");
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static DEFINE_SPINLOCK(rmnet_checksum_dl_stats);
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unsigned long int checksum_dl_stats[RMNET_MAP_CHECKSUM_ENUM_LENGTH];
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module_param_array(checksum_dl_stats, ulong, 0, 0444);
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MODULE_PARM_DESC(checksum_dl_stats, "Downlink Checksum Statistics");
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static DEFINE_SPINLOCK(rmnet_checksum_ul_stats);
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unsigned long int checksum_ul_stats[RMNET_MAP_CHECKSUM_ENUM_LENGTH];
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module_param_array(checksum_ul_stats, ulong, 0, 0444);
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MODULE_PARM_DESC(checksum_ul_stats, "Uplink Checksum Statistics");
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void rmnet_kfree_skb(struct sk_buff *skb, unsigned int reason)
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{
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unsigned long flags;
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if (reason >= RMNET_STATS_SKBFREE_MAX)
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reason = RMNET_STATS_SKBFREE_UNKNOWN;
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spin_lock_irqsave(&rmnet_skb_free_lock, flags);
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skb_free[reason]++;
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spin_unlock_irqrestore(&rmnet_skb_free_lock, flags);
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kfree_skb(skb);
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}
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void rmnet_stats_queue_xmit(int rc, unsigned int reason)
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{
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unsigned long flags;
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if (rc != 0)
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reason += RMNET_STATS_QUEUE_XMIT_MAX;
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if (reason >= RMNET_STATS_QUEUE_XMIT_MAX * 2)
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reason = RMNET_STATS_SKBFREE_UNKNOWN;
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spin_lock_irqsave(&rmnet_queue_xmit_lock, flags);
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queue_xmit[reason]++;
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spin_unlock_irqrestore(&rmnet_queue_xmit_lock, flags);
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}
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void rmnet_stats_agg_pkts(int aggcount)
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{
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unsigned long flags;
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spin_lock_irqsave(&rmnet_agg_count, flags);
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agg_count[RMNET_STATS_AGG_BUFF]++;
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agg_count[RMNET_STATS_AGG_PKT] += aggcount;
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spin_unlock_irqrestore(&rmnet_agg_count, flags);
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}
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void rmnet_stats_dl_checksum(unsigned int rc)
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{
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unsigned long flags;
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if (rc >= RMNET_MAP_CHECKSUM_ENUM_LENGTH)
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rc = RMNET_MAP_CHECKSUM_ERR_UNKNOWN;
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spin_lock_irqsave(&rmnet_checksum_dl_stats, flags);
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checksum_dl_stats[rc]++;
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spin_unlock_irqrestore(&rmnet_checksum_dl_stats, flags);
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}
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void rmnet_stats_ul_checksum(unsigned int rc)
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{
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unsigned long flags;
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if (rc >= RMNET_MAP_CHECKSUM_ENUM_LENGTH)
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rc = RMNET_MAP_CHECKSUM_ERR_UNKNOWN;
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spin_lock_irqsave(&rmnet_checksum_ul_stats, flags);
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checksum_ul_stats[rc]++;
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spin_unlock_irqrestore(&rmnet_checksum_ul_stats, flags);
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}
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