7bf5ca80ec
BAM_DMUX does not put any restriction on the number of packets in flight over the underlying BAM transport. This causes the bandwidth to be not shared fairly among the clients. So introduce the concept of watermarking in each client's transmit queue so that the clients share the transport fairly and efficiently under high throughput uplink scenarios Change-Id: Ibf7e12b4cf13e826e7f83a41821f435cb7aa2cb0 Signed-off-by: Karthikeyan Ramasubramanian <kramasub@codeaurora.org>
99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
/* Copyright (c) 2011, Code Aurora Forum. 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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#include <linux/types.h>
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#include <linux/skbuff.h>
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#ifndef _BAM_DMUX_H
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#define _BAM_DMUX_H
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#define BAM_DMUX_CH_NAME_MAX_LEN 20
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enum {
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BAM_DMUX_DATA_RMNET_0,
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BAM_DMUX_DATA_RMNET_1,
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BAM_DMUX_DATA_RMNET_2,
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BAM_DMUX_DATA_RMNET_3,
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BAM_DMUX_DATA_RMNET_4,
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BAM_DMUX_DATA_RMNET_5,
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BAM_DMUX_DATA_RMNET_6,
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BAM_DMUX_DATA_RMNET_7,
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BAM_DMUX_USB_RMNET_0,
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BAM_DMUX_NUM_CHANNELS
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};
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/* event type enum */
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enum {
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BAM_DMUX_RECEIVE, /* data is struct sk_buff */
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BAM_DMUX_WRITE_DONE, /* data is struct sk_buff */
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BAM_DMUX_UL_CONNECTED, /* data is null */
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BAM_DMUX_UL_DISCONNECTED, /*data is null */
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};
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/*
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* Open a bam_dmux logical channel
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* id - the logical channel to open
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* priv - private data pointer to be passed to the notify callback
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* notify - event callback function
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* priv - private data pointer passed to msm_bam_dmux_open()
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* event_type - type of event
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* data - data relevant to event. May not be valid. See event_type
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* enum for valid cases.
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*/
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#ifdef CONFIG_MSM_BAM_DMUX
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int msm_bam_dmux_open(uint32_t id, void *priv,
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void (*notify)(void *priv, int event_type,
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unsigned long data));
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int msm_bam_dmux_close(uint32_t id);
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int msm_bam_dmux_write(uint32_t id, struct sk_buff *skb);
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void msm_bam_dmux_kickoff_ul_wakeup(void);
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int msm_bam_dmux_is_ch_full(uint32_t id);
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int msm_bam_dmux_is_ch_low(uint32_t id);
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#else
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int msm_bam_dmux_open(uint32_t id, void *priv,
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void (*notify)(void *priv, int event_type,
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unsigned long data))
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{
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return -ENODEV;
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}
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int msm_bam_dmux_close(uint32_t id)
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{
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return -ENODEV;
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}
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int msm_bam_dmux_write(uint32_t id, struct sk_buff *skb)
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{
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return -ENODEV;
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}
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void msm_bam_dmux_kickoff_ul_wakeup(void)
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{
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}
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int msm_bam_dmux_is_ch_full(uint32_t id)
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{
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return -ENODEV;
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}
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int msm_bam_dmux_is_ch_low(uint32_t id)
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{
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return -ENODEV;
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}
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#endif
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#endif /* _BAM_DMUX_H */
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