[PATCH v2 3/4] kni: fix function parameter from proto_ops pointers

[Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>]

Parameters from sendmsg and recvmsg has been changed in 4.1 kernel.
The function pointers belong to proto_ops structure were updated removing 
the struct kiocb parameter.

Fixes: 1b784140474e ("net: Remove iocb argument from sendmsg and recvmsg")

Signed-off-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
---
 lib/librte_eal/linuxapp/kni/compat.h    |  4 ++++
 lib/librte_eal/linuxapp/kni/kni_vhost.c | 10 ++++++++++
 2 files changed, 14 insertions(+)

diff --git a/lib/librte_eal/linuxapp/kni/compat.h b/lib/librte_eal/linuxapp/kni/compat.h
index 1ad22ba..cf100b6 100644
--- a/lib/librte_eal/linuxapp/kni/compat.h
+++ b/lib/librte_eal/linuxapp/kni/compat.h
@@ -23,3 +23,7 @@
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0)
 #define HAVE_IOV_ITER_MSGHDR
 #endif
+
+#if ( LINUX_VERSION_CODE < KERNEL_VERSION(4,1,0) )
+#define HAVE_KIOCB_MSG_PARAM
+#endif /* < 4.1.0 */
diff --git a/lib/librte_eal/linuxapp/kni/kni_vhost.c b/lib/librte_eal/linuxapp/kni/kni_vhost.c
index e01420a..f21b47e 100644
--- a/lib/librte_eal/linuxapp/kni/kni_vhost.c
+++ b/lib/librte_eal/linuxapp/kni/kni_vhost.c
@@ -353,8 +353,13 @@ except:
 }
 
 static int
+#ifdef HAVE_KIOCB_MSG_PARAM
 kni_sock_sndmsg(struct kiocb *iocb, struct socket *sock,
 	   struct msghdr *m, size_t total_len)
+#else
+kni_sock_sndmsg(struct socket *sock,
+	   struct msghdr *m, size_t total_len)
+#endif /* HAVE_KIOCB_MSG_PARAM */
 {
 	struct kni_vhost_queue *q =
 		container_of(sock->sk, struct kni_vhost_queue, sk);
@@ -387,8 +392,13 @@ kni_sock_sndmsg(struct kiocb *iocb, struct socket *sock,
 }
 
 static int
+#ifdef HAVE_KIOCB_MSG_PARAM
 kni_sock_rcvmsg(struct kiocb *iocb, struct socket *sock,
 	   struct msghdr *m, size_t len, int flags)
+#else
+kni_sock_rcvmsg(struct socket *sock,
+	   struct msghdr *m, size_t len, int flags)
+#endif /* HAVE_KIOCB_MSG_PARAM */
 {
 	int vnet_hdr_len = 0;
 	int pkt_len = 0;
-- 
2.4.4