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usb: gadget: rndis: Add new rndis parameters

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Add pkt_alignment_factor rndis parameter. This
parameter along with max_pkt_per_xfer allow rndis
function driver to aggregate more than one IP packets
per transfer. This is done by calling newly added API
rndis_set_pkt_alignment_factor().

Change-Id: Ic9c543c388f872452e708a3a26be4ae82b54c082
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
Signed-off-by: Jack Pham <jackp@codeaurora.org>
This commit is contained in:
Hemant Kumar 2016-02-01 18:54:16 -08:00 • committed by Jack Pham
commit f645ecc002
2 changed files with 17 additions and 1 deletions
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15
drivers/usb/gadget/function/rndis.c
View file

@ -579,7 +579,7 @@ static int rndis_init_response(struct rndis_params *params,
+ sizeof(struct ethhdr)
+ sizeof(struct rndis_packet_msg_type)
+ 22));
resp->PacketAlignmentFactor = cpu_to_le32(0);
resp->PacketAlignmentFactor = cpu_to_le32(params->pkt_alignment_factor);
resp->AFListOffset = cpu_to_le32(0);
resp->AFListSize = cpu_to_le32(0);
@ -1179,6 +1179,19 @@ int rndis_rm_hdr(struct gether *port,
}
EXPORT_SYMBOL_GPL(rndis_rm_hdr);
void rndis_set_pkt_alignment_factor(struct rndis_params *params,
u8 pkt_alignment_factor)
{
pr_debug("%s:\n", __func__);
if (!params) {
pr_err("%s: failed, params NULL\n", __func__);
return;
}
params->pkt_alignment_factor = pkt_alignment_factor;
}
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
static int rndis_proc_show(struct seq_file *m, void *v)

3
drivers/usb/gadget/function/rndis.h
View file

@ -172,6 +172,7 @@ typedef struct rndis_params {
u32 vendorID;
u8 max_pkt_per_xfer;
const char *vendorDescr;
u8 pkt_alignment_factor;
void (*resp_avail)(void *v);
void (*flow_ctrl_enable)(bool enable,
struct rndis_params *params);
@ -204,5 +205,7 @@ int rndis_signal_disconnect(struct rndis_params *params);
int rndis_state(struct rndis_params *params);
extern void rndis_set_host_mac(struct rndis_params *params, const u8 *addr);
void rndis_flow_control(struct rndis_params *params, bool enable_flow_control);
void rndis_set_pkt_alignment_factor(struct rndis_params *params,
u8 pkt_alignment_factor);
#endif /* _LINUX_RNDIS_H */