The lowpan_fetch_skb function is used to fetch the first byte, which also increments the data pointer in skb structure, making subsequent array lookup of byte 0 actually being byte 1. To decompress the first byte of the Flow Label when the TF flag is set to 0x01, the second half of the first byte is needed. The patch fixes the extraction of the Flow Label field. Signed-off-by: Lukasz Duda <lukasz.duda@xxxxxxxxxxxxx> Signed-off-by: Glenn Ruben Bakke <glenn.ruben.bakke@xxxxxxxxxxxxx> --- net/6lowpan/iphc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/6lowpan/iphc.c b/net/6lowpan/iphc.c index 9055d7b..74e56d7 100644 --- a/net/6lowpan/iphc.c +++ b/net/6lowpan/iphc.c @@ -284,7 +284,7 @@ lowpan_header_decompress(struct sk_buff *skb, struct net_device *dev, if (lowpan_fetch_skb(skb, &tmp, sizeof(tmp))) return -EINVAL; - hdr.flow_lbl[0] = (skb->data[0] & 0x0F) | ((tmp >> 2) & 0x30); + hdr.flow_lbl[0] = (tmp & 0x0F) | ((tmp >> 2) & 0x30); memcpy(&hdr.flow_lbl[1], &skb->data[0], 2); skb_pull(skb, 2); break; -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
