diff options
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmsmac/dma.c')
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmsmac/dma.c | 39 |
1 files changed, 23 insertions, 16 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/dma.c b/drivers/net/wireless/brcm80211/brcmsmac/dma.c index 6ebec8f42846..e286fb4d4813 100644 --- a/drivers/net/wireless/brcm80211/brcmsmac/dma.c +++ b/drivers/net/wireless/brcm80211/brcmsmac/dma.c @@ -14,7 +14,6 @@ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <linux/slab.h> -#include <linux/skbuff.h> #include <linux/delay.h> #include <linux/pci.h> @@ -22,6 +21,7 @@ #include <aiutils.h> #include "types.h" #include "dma.h" +#include "soc.h" /* * DMA hardware requires each descriptor ring to be 8kB aligned, and fit within @@ -901,7 +901,7 @@ static struct sk_buff *_dma_getnextrxp(struct dma_info *di, bool forceall) /* * !! rx entry routine - * returns a pointer to the next frame received, or NULL if there are no more + * returns the number packages in the next frame, or 0 if there are no more * if DMA_CTRL_RXMULTI is defined, DMA scattering(multiple buffers) is * supported with pkts chain * otherwise, it's treated as giant pkt and will be tossed. @@ -909,38 +909,40 @@ static struct sk_buff *_dma_getnextrxp(struct dma_info *di, bool forceall) * buffer data. After it reaches the max size of buffer, the data continues * in next DMA descriptor buffer WITHOUT DMA header */ -struct sk_buff *dma_rx(struct dma_pub *pub) +int dma_rx(struct dma_pub *pub, struct sk_buff_head *skb_list) { struct dma_info *di = (struct dma_info *)pub; - struct sk_buff *p, *head, *tail; + struct sk_buff_head dma_frames; + struct sk_buff *p, *next; uint len; uint pkt_len; int resid = 0; + int pktcnt = 1; + skb_queue_head_init(&dma_frames); next_frame: - head = _dma_getnextrxp(di, false); - if (head == NULL) - return NULL; + p = _dma_getnextrxp(di, false); + if (p == NULL) + return 0; - len = le16_to_cpu(*(__le16 *) (head->data)); + len = le16_to_cpu(*(__le16 *) (p->data)); DMA_TRACE(("%s: dma_rx len %d\n", di->name, len)); - dma_spin_for_len(len, head); + dma_spin_for_len(len, p); /* set actual length */ pkt_len = min((di->rxoffset + len), di->rxbufsize); - __skb_trim(head, pkt_len); + __skb_trim(p, pkt_len); + skb_queue_tail(&dma_frames, p); resid = len - (di->rxbufsize - di->rxoffset); /* check for single or multi-buffer rx */ if (resid > 0) { - tail = head; while ((resid > 0) && (p = _dma_getnextrxp(di, false))) { - tail->next = p; pkt_len = min_t(uint, resid, di->rxbufsize); __skb_trim(p, pkt_len); - - tail = p; + skb_queue_tail(&dma_frames, p); resid -= di->rxbufsize; + pktcnt++; } #ifdef BCMDBG @@ -959,13 +961,18 @@ struct sk_buff *dma_rx(struct dma_pub *pub) if ((di->dma.dmactrlflags & DMA_CTRL_RXMULTI) == 0) { DMA_ERROR(("%s: dma_rx: bad frame length (%d)\n", di->name, len)); - brcmu_pkt_buf_free_skb(head); + skb_queue_walk_safe(&dma_frames, p, next) { + skb_unlink(p, &dma_frames); + brcmu_pkt_buf_free_skb(p); + } di->dma.rxgiants++; + pktcnt = 1; goto next_frame; } } - return head; + skb_queue_splice_tail(&dma_frames, skb_list); + return pktcnt; } static bool dma64_rxidle(struct dma_info *di) |