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brcm80211: smac: use sk_buff list for handling frames in receive path

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In the receive path the frames are obtained from the dma using
multiple sk_buff that were linked using the skb next pointer.
This has been changed and it now used sk_buff lists and skb_queue
functions instead.

Reported-by: Johannes Berg <johannes@sipsolutions.net>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Alwin Beukers <alwin@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 2011-10-21 16:16:31 +02:00 • committed by John W. Linville
commit 3fd172d30b
3 changed files with 32 additions and 30 deletions
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21
drivers/net/wireless/brcm80211/brcmsmac/main.c
View file

@ -8115,21 +8115,17 @@ static bool
brcms_b_recv(struct brcms_hardware *wlc_hw, uint fifo, bool bound)
{
struct sk_buff *p;
struct sk_buff *head = NULL;
struct sk_buff *tail = NULL;
struct sk_buff *next = NULL;
struct sk_buff_head recv_frames;
uint n = 0;
uint bound_limit = bound ? RXBND : -1;
BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
/* gather received frames */
while ((p = dma_rx(wlc_hw->di[fifo]))) {
skb_queue_head_init(&recv_frames);
if (!tail)
head = tail = p;
else {
tail->prev = p;
tail = p;
}
/* gather received frames */
while (dma_rx(wlc_hw->di[fifo], &recv_frames)) {
/* !give others some time to run! */
if (++n >= bound_limit)
@ -8140,12 +8136,11 @@ brcms_b_recv(struct brcms_hardware *wlc_hw, uint fifo, bool bound)
dma_rxfill(wlc_hw->di[fifo]);
/* process each frame */
while ((p = head) != NULL) {
skb_queue_walk_safe(&recv_frames, p, next) {
struct d11rxhdr_le *rxh_le;
struct d11rxhdr *rxh;
head = head->prev;
p->prev = NULL;
skb_unlink(p, &recv_frames);
rxh_le = (struct d11rxhdr_le *)p->data;
rxh = (struct d11rxhdr *)p->data;