UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

brcmfmac: increase required skbuff headroom for firmware signalling 

In preparation of firmware signalling feature additional headroom is
needed to accommodate signalling protocol data between host and
firmware.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Arend van Spriel 2013-03-03 12:45:26 +01:00 committed by John W. Linville
parent dc7bdbf1ae
commit bee1b84887
1 changed files with 15 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/net/wireless/brcm80211/brcmfmac/dhd_cdc.c
View File

@ -71,13 +71,26 @@ struct brcmf_proto_cdc_dcmd {
((hdr)->flags2 = (((hdr)->flags2 & ~BDC_FLAG2_IF_MASK) | \
((idx) << BDC_FLAG2_IF_SHIFT)))
/**
* struct brcmf_proto_bdc_header - BDC header format
*
* @flags: flags contain protocol and checksum info.
* @priority: 802.1d priority and USB flow control info (bit 4:7).
* @flags2: additional flags containing dongle interface index.
* @data_offset: start of packet data. header is following by firmware signals.
*/
struct brcmf_proto_bdc_header {
u8 flags;
u8 priority; /* 802.1d Priority, 4:7 flow control info for usb */
u8 priority;
u8 flags2;
u8 data_offset;
};
/*
* maximum length of firmware signal data between
* the BDC header and packet data in the tx path.
*/
#define BRCMF_PROT_FW_SIGNAL_MAX_TXBYTES 12
#define RETRIES 2 /* # of retries to retrieve matching dcmd response */
#define BUS_HEADER_LEN (16+64) /* Must be atleast SDPCM_RESERVE
@ -350,7 +363,7 @@ int brcmf_proto_attach(struct brcmf_pub *drvr)
}
drvr->prot = cdc;
drvr->hdrlen += BDC_HEADER_LEN;
drvr->hdrlen += BDC_HEADER_LEN + BRCMF_PROT_FW_SIGNAL_MAX_TXBYTES;
drvr->bus_if->maxctl = BRCMF_DCMD_MAXLEN +
sizeof(struct brcmf_proto_cdc_dcmd) + ROUND_UP_MARGIN;
return 0;