diff options
Diffstat (limited to 'target/linux/rb532/patches-2.6.28/010-korina_rework_korina_rx.patch')
| -rw-r--r-- | target/linux/rb532/patches-2.6.28/010-korina_rework_korina_rx.patch | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/target/linux/rb532/patches-2.6.28/010-korina_rework_korina_rx.patch b/target/linux/rb532/patches-2.6.28/010-korina_rework_korina_rx.patch deleted file mode 100644 index bfb91a91a..000000000 --- a/target/linux/rb532/patches-2.6.28/010-korina_rework_korina_rx.patch +++ /dev/null @@ -1,138 +0,0 @@ -This function needs an early exit condition to function properly, or -else caller assumes napi workload wasn't enough to handle all received -packets and korina_rx is called again (and again and again and ...). - -Signed-off-by: Phil Sutter <n0-1@freewrt.org> ---- ---- a/drivers/net/korina.c -+++ b/drivers/net/korina.c -@@ -353,15 +353,20 @@ static int korina_rx(struct net_device * - struct dma_desc *rd = &lp->rd_ring[lp->rx_next_done]; - struct sk_buff *skb, *skb_new; - u8 *pkt_buf; -- u32 devcs, pkt_len, dmas, rx_free_desc; -+ u32 devcs, pkt_len, dmas; - int count; - - dma_cache_inv((u32)rd, sizeof(*rd)); - - for (count = 0; count < limit; count++) { -+ skb = lp->rx_skb[lp->rx_next_done]; -+ skb_new = NULL; - - devcs = rd->devcs; - -+ if ((KORINA_RBSIZE - (u32)DMA_COUNT(rd->control)) == 0) -+ break; -+ - /* Update statistics counters */ - if (devcs & ETH_RX_CRC) - dev->stats.rx_crc_errors++; -@@ -384,64 +389,53 @@ static int korina_rx(struct net_device * - * in Rc32434 (errata ref #077) */ - dev->stats.rx_errors++; - dev->stats.rx_dropped++; -- } -- -- while ((rx_free_desc = KORINA_RBSIZE - (u32)DMA_COUNT(rd->control)) != 0) { -- /* init the var. used for the later -- * operations within the while loop */ -- skb_new = NULL; -+ } else if ((devcs & ETH_RX_ROK)) { - pkt_len = RCVPKT_LENGTH(devcs); -- skb = lp->rx_skb[lp->rx_next_done]; -+ /* must be the (first and) last -+ * descriptor then */ -+ pkt_buf = (u8 *)lp->rx_skb[lp->rx_next_done]->data; -+ -+ /* invalidate the cache */ -+ dma_cache_inv((unsigned long)pkt_buf, pkt_len - 4); -+ -+ /* Malloc up new buffer. */ -+ skb_new = netdev_alloc_skb(dev, KORINA_RBSIZE + 2); -+ -+ if (!skb_new) -+ break; -+ /* Do not count the CRC */ -+ skb_put(skb, pkt_len - 4); -+ skb->protocol = eth_type_trans(skb, dev); -+ -+ /* Pass the packet to upper layers */ -+ netif_receive_skb(skb); -+ dev->stats.rx_packets++; -+ dev->stats.rx_bytes += pkt_len; -+ -+ /* Update the mcast stats */ -+ if (devcs & ETH_RX_MP) -+ dev->stats.multicast++; - -- if ((devcs & ETH_RX_ROK)) { -- /* must be the (first and) last -- * descriptor then */ -- pkt_buf = (u8 *)lp->rx_skb[lp->rx_next_done]->data; -- -- /* invalidate the cache */ -- dma_cache_inv((unsigned long)pkt_buf, pkt_len - 4); -- -- /* Malloc up new buffer. */ -- skb_new = netdev_alloc_skb(dev, KORINA_RBSIZE + 2); -- -- if (!skb_new) -- break; -- /* Do not count the CRC */ -- skb_put(skb, pkt_len - 4); -- skb->protocol = eth_type_trans(skb, dev); -- -- /* Pass the packet to upper layers */ -- netif_receive_skb(skb); -- dev->last_rx = jiffies; -- dev->stats.rx_packets++; -- dev->stats.rx_bytes += pkt_len; -- -- /* Update the mcast stats */ -- if (devcs & ETH_RX_MP) -- dev->stats.multicast++; -- -- lp->rx_skb[lp->rx_next_done] = skb_new; -- } -- -- rd->devcs = 0; -- -- /* Restore descriptor's curr_addr */ -- if (skb_new) -- rd->ca = CPHYSADDR(skb_new->data); -- else -- rd->ca = CPHYSADDR(skb->data); -+ lp->rx_skb[lp->rx_next_done] = skb_new; -+ } -+ rd->devcs = 0; -+ -+ /* Restore descriptor's curr_addr */ -+ if (skb_new) -+ rd->ca = CPHYSADDR(skb_new->data); -+ else -+ rd->ca = CPHYSADDR(skb->data); - -- rd->control = DMA_COUNT(KORINA_RBSIZE) | -+ rd->control = DMA_COUNT(KORINA_RBSIZE) | - DMA_DESC_COD | DMA_DESC_IOD; -- lp->rd_ring[(lp->rx_next_done - 1) & -- KORINA_RDS_MASK].control &= -- ~DMA_DESC_COD; -- -- lp->rx_next_done = (lp->rx_next_done + 1) & KORINA_RDS_MASK; -- dma_cache_wback((u32)rd, sizeof(*rd)); -- rd = &lp->rd_ring[lp->rx_next_done]; -- writel(~DMA_STAT_DONE, &lp->rx_dma_regs->dmas); -- } -+ lp->rd_ring[(lp->rx_next_done - 1) & -+ KORINA_RDS_MASK].control &= -+ ~DMA_DESC_COD; -+ -+ lp->rx_next_done = (lp->rx_next_done + 1) & KORINA_RDS_MASK; -+ dma_cache_wback((u32)rd, sizeof(*rd)); -+ rd = &lp->rd_ring[lp->rx_next_done]; -+ writel(~DMA_STAT_DONE, &lp->rx_dma_regs->dmas); - } - - dmas = readl(&lp->rx_dma_regs->dmas); |