Subject: [RFC PATCH 4/5] netlink: mmap: update tx type check

From: Ken-ichirou MATSUZAWA <[email-masked]>
Date: Wed, 22 Jul 2015 22:22:30 +0900

We need to accept msg_iter.type 1(WRITE) which is set in sendto/sendmsg.

Signed-off-by: Ken-ichirou MATSUZAWA <[email-masked]>
---
 net/netlink/af_netlink.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index a6fba4c..7e1610e 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2394,7 +2394,7 @@ static int netlink_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
 	 * sendmsg(), but that's what we've got...
 	 */
 	if (netlink_tx_is_mmaped(sk) &&
-	    msg->msg_iter.type == ITER_IOVEC &&
+	    !(msg->msg_iter.type & (ITER_KVEC | ITER_BVEC)) &&
 	    msg->msg_iter.nr_segs == 1 &&
 	    msg->msg_iter.iov->iov_base == NULL) {
 		err = netlink_mmap_sendmsg(sk, msg, dst_portid, dst_group,
-- 
1.7.10.4

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