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caif-hsi: robust frame aggregation for HSI

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Implement aggregation algorithm, combining more data into a single
HSI transfer. 4 different traffic categories are supported:
 1. TC_PRIO_CONTROL .. TC_PRIO_MAX (CTL)
 2. TC_PRIO_INTERACTIVE            (VO)
 3. TC_PRIO_INTERACTIVE_BULK       (VI)
 4. TC_PRIO_BESTEFFORT, TC_PRIO_BULK, TC_PRIO_FILLER (BEBK)

Signed-off-by: Dmitry Tarnyagin <dmitry.tarnyagin@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dmitry Tarnyagin 2012-04-12 08:27:25 +00:00 • committed by David S. Miller
parent 447648128e
commit ece367d53a
2 changed files with 205 additions and 57 deletions
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19
include/net/caif/caif_hsi.h
View file

@ -123,12 +123,21 @@ struct cfhsi_rx_state {
bool piggy_desc;
};
/* Priority mapping */
enum {
CFHSI_PRIO_CTL = 0,
CFHSI_PRIO_VI,
CFHSI_PRIO_VO,
CFHSI_PRIO_BEBK,
CFHSI_PRIO_LAST,
};
/* Structure implemented by CAIF HSI drivers. */
struct cfhsi {
struct caif_dev_common cfdev;
struct net_device *ndev;
struct platform_device *pdev;
struct sk_buff_head qhead;
struct sk_buff_head qhead[CFHSI_PRIO_LAST];
struct cfhsi_drv drv;
struct cfhsi_dev *dev;
int tx_state;
@ -151,8 +160,14 @@ struct cfhsi {
wait_queue_head_t wake_up_wait;
wait_queue_head_t wake_down_wait;
wait_queue_head_t flush_fifo_wait;
struct timer_list timer;
struct timer_list inactivity_timer;
struct timer_list rx_slowpath_timer;
/* TX aggregation */
unsigned long aggregation_timeout;
int aggregation_len;
struct timer_list aggregation_timer;
unsigned long bits;
};