net: add the comment for skb->l4_rxhash

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index f902c331217b..ea0b37463860 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -322,6 +322,8 @@ typedef unsigned char *sk_buff_data_t;
  *      @queue_mapping: Queue mapping for multiqueue devices
  *      @ndisc_nodetype: router type (from link layer)
  *      @ooo_okay: allow the mapping of a socket to a queue to be changed
+ *      @l4_rxhash: indicate rxhash is a canonical 4-tuple hash over transport
+ *              ports.
  *      @dma_cookie: a cookie to one of several possible DMA operations
  *              done by skb DMA functions
  *      @secmark: security marking