Phonet: Pipe End Point for Phonet Pipes protocol

This protocol provides some connection handling and negotiated
congestion control. Nokia cellular modems use it for bulk transfers.
It provides packet boundaries (hence SOCK_SEQPACKET). Congestion
control is per packet rather per byte, so we do not re-use the
generic socket memory accounting.

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/include/linux/phonet.h b/include/linux/phonet.h
index 3a027f588a4a..f92185242078 100644
--- a/include/linux/phonet.h
+++ b/include/linux/phonet.h
@@ -27,7 +27,9 @@
 #define PN_PROTO_TRANSPORT      0
 /* Phonet datagram socket */
 #define PN_PROTO_PHONET         1
-#define PHONET_NPROTO           2
+/* Phonet pipe */
+#define PN_PROTO_PIPE           2
+#define PHONET_NPROTO           3
 
 #define PNADDR_ANY              0
 #define PNPORT_RESOURCE_ROUTING 0