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brcm80211: util: move brcmu_pktfrombuf() function to brcmfmac 

The function brcmu_pktfrombuf was only used in the brcmfmac source
and has been moved there. It has been refactored to match its use.

Reported-by: Johannes Berg <johannes@sipsolutions.net>
Reviewed-by: Roland Vossen <rvossen@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@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 2011-10-18 14:03:09 +02:00 committed by John W. Linville
parent 1433c59bcc
commit 20e5ca1639
3 changed files with 24 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
View File

@ -1222,6 +1222,28 @@ static void brcmf_sdbrcm_rxfail(struct brcmf_bus *bus, bool abort, bool rtx)
bus->drvr->busstate = BRCMF_BUS_DOWN;
}
/* copy a buffer into a pkt buffer chain */
static uint brcmf_sdbrcm_glom_from_buf(struct brcmf_bus *bus, uint len)
{
uint n, ret = 0;
struct sk_buff *p;
u8 *buf;
p = bus->glom;
buf = bus->dataptr;
/* copy the data */
for (; p && len; p = p->next) {
n = min_t(uint, p->len, len);
memcpy(p->data, buf, n);
buf += n;
len -= n;
ret += n;
}
return ret;
}
static u8 brcmf_sdbrcm_rxglom(struct brcmf_bus *bus, u8 rxseq)
{
u16 dlen, totlen;
@ -1354,8 +1376,7 @@ static u8 brcmf_sdbrcm_rxglom(struct brcmf_bus *bus, u8 rxseq)
SDIO_FUNC_2,
F2SYNC, bus->dataptr, dlen,
NULL);
sublen = (u16) brcmu_pktfrombuf(pfirst, 0, dlen,
bus->dataptr);
sublen = (u16) brcmf_sdbrcm_glom_from_buf(bus, dlen);
if (sublen != dlen) {
brcmf_dbg(ERROR, "FAILED TO COPY, dlen %d sublen %d\n",
dlen, sublen);

31
drivers/net/wireless/brcm80211/brcmutil/utils.c
View File

@ -16,6 +16,7 @@
#include <linux/netdevice.h>
#include <linux/module.h>
#include <brcmu_utils.h>
MODULE_AUTHOR("Broadcom Corporation");
@ -66,36 +67,6 @@ void brcmu_pkt_buf_free_skb(struct sk_buff *skb)
EXPORT_SYMBOL(brcmu_pkt_buf_free_skb);
/* copy a buffer into a pkt buffer chain */
uint brcmu_pktfrombuf(struct sk_buff *p, uint offset, int len,
unsigned char *buf)
{
uint n, ret = 0;
/* skip 'offset' bytes */
for (; p && offset; p = p->next) {
if (offset < (uint) (p->len))
break;
offset -= p->len;
}
if (!p)
return 0;
/* copy the data */
for (; p && len; p = p->next) {
n = min((uint) (p->len) - offset, (uint) len);
memcpy(p->data + offset, buf, n);
buf += n;
len -= n;
ret += n;
offset = 0;
}
return ret;
}
EXPORT_SYMBOL(brcmu_pktfrombuf);
/* return total length of buffer chain */
uint brcmu_pkttotlen(struct sk_buff *p)
{

2
drivers/net/wireless/brcm80211/include/brcmu_utils.h
View File

@ -173,8 +173,6 @@ extern void brcmu_pktq_flush(struct pktq *pq, bool dir,
/* externs */
/* packet */
extern uint brcmu_pktfrombuf(struct sk_buff *p,
uint offset, int len, unsigned char *buf);
extern uint brcmu_pkttotlen(struct sk_buff *p);
/* ip address */