diff options
Diffstat (limited to 'target/linux/generic/patches-3.10/775-bgmac-check-length-of-received-frame.patch')
| -rw-r--r-- | target/linux/generic/patches-3.10/775-bgmac-check-length-of-received-frame.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.10/775-bgmac-check-length-of-received-frame.patch b/target/linux/generic/patches-3.10/775-bgmac-check-length-of-received-frame.patch new file mode 100644 index 0000000000..3b818bec3e --- /dev/null +++ b/target/linux/generic/patches-3.10/775-bgmac-check-length-of-received-frame.patch @@ -0,0 +1,41 @@ +From 2d12a9abf3f81de5b51852e3cfcba8cedac82642 Mon Sep 17 00:00:00 2001 +From: Hauke Mehrtens <hauke@hauke-m.de> +Date: Fri, 6 Dec 2013 01:14:52 +0100 +Subject: [PATCH] bgmac: check length of received frame + +--- + drivers/net/ethernet/broadcom/bgmac.c | 9 ++++++++- + 1 file changed, 8 insertions(+), 1 deletion(-) + +--- a/drivers/net/ethernet/broadcom/bgmac.c ++++ b/drivers/net/ethernet/broadcom/bgmac.c +@@ -347,6 +347,7 @@ static int bgmac_dma_rx_read(struct bgma + struct sk_buff *skb = slot->skb; + struct bgmac_rx_header *rx; + u16 len, flags; ++ int count; + + /* Unmap buffer to make it accessible to the CPU */ + dma_sync_single_for_cpu(dma_dev, slot->dma_addr, +@@ -355,6 +356,12 @@ static int bgmac_dma_rx_read(struct bgma + /* Get info from the header */ + rx = (struct bgmac_rx_header *)skb->data; + len = le16_to_cpu(rx->len); ++ for (count = 0; count < 200; count++) { ++ len = le16_to_cpu(rx->len); ++ if (len) ++ break; ++ udelay(1); ++ } + flags = le16_to_cpu(rx->flags); + + do { +@@ -362,7 +369,7 @@ static int bgmac_dma_rx_read(struct bgma + int err; + + /* Check for poison and drop or pass the packet */ +- if (len == 0xdead && flags == 0xbeef) { ++ if (!len || (len == 0xdead && flags == 0xbeef)) { + bgmac_err(bgmac, "Found poisoned packet at slot %d, DMA issue!\n", + ring->start); + dma_sync_single_for_device(dma_dev, |