caif: Use link layer MTU instead of fixed MTU
Previously CAIF supported maximum transfer size of ~4050.
The transfer size is now calculated dynamically based on the
link layers mtu size.
Signed-off-by: Sjur Braendeland@stericsson.com
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/caif/caif_dev.h b/include/net/caif/caif_dev.h
index 318ab94..6da573c 100644
--- a/include/net/caif/caif_dev.h
+++ b/include/net/caif/caif_dev.h
@@ -50,6 +50,9 @@
* @client_layer: User implementation of client layer. This layer
* MUST have receive and control callback functions
* implemented.
+ * @ifindex: Link layer interface index used for this connection.
+ * @headroom: Head room needed by CAIF protocol.
+ * @tailroom: Tail room needed by CAIF protocol.
*
* This function connects a CAIF channel. The Client must implement
* the struct cflayer. This layer represents the Client layer and holds
@@ -59,8 +62,9 @@
* E.g. CAIF Socket will call this function for each socket it connects
* and have one client_layer instance for each socket.
*/
-int caif_connect_client(struct caif_connect_request *config,
- struct cflayer *client_layer);
+int caif_connect_client(struct caif_connect_request *conn_req,
+ struct cflayer *client_layer, int *ifindex,
+ int *headroom, int *tailroom);
/**
* caif_disconnect_client - Disconnects a client from the CAIF stack.
diff --git a/include/net/caif/caif_layer.h b/include/net/caif/caif_layer.h
index 25c472f..c8b07a9 100644
--- a/include/net/caif/caif_layer.h
+++ b/include/net/caif/caif_layer.h
@@ -15,14 +15,8 @@
struct caif_payload_info;
struct caif_packet_funcs;
-#define CAIF_MAX_FRAMESIZE 4096
-#define CAIF_MAX_PAYLOAD_SIZE (4096 - 64)
-#define CAIF_NEEDED_HEADROOM (10)
-#define CAIF_NEEDED_TAILROOM (2)
#define CAIF_LAYER_NAME_SZ 16
-#define CAIF_SUCCESS 1
-#define CAIF_FAILURE 0
/**
* caif_assert() - Assert function for CAIF.
diff --git a/include/net/caif/cfcnfg.h b/include/net/caif/cfcnfg.h
index 9fc2fc2..bd646fa 100644
--- a/include/net/caif/cfcnfg.h
+++ b/include/net/caif/cfcnfg.h
@@ -7,6 +7,7 @@
#ifndef CFCNFG_H_
#define CFCNFG_H_
#include <linux/spinlock.h>
+#include <linux/netdevice.h>
#include <net/caif/caif_layer.h>
#include <net/caif/cfctrl.h>
@@ -73,8 +74,8 @@
void
cfcnfg_add_phy_layer(struct cfcnfg *cnfg, enum cfcnfg_phy_type phy_type,
- void *dev, struct cflayer *phy_layer, u16 *phyid,
- enum cfcnfg_phy_preference pref,
+ struct net_device *dev, struct cflayer *phy_layer,
+ u16 *phyid, enum cfcnfg_phy_preference pref,
bool fcs, bool stx);
/**
@@ -114,11 +115,18 @@
* @param: Link setup parameters.
* @adap_layer: Specify the adaptation layer; the receive and
* flow-control functions MUST be set in the structure.
- *
+ * @ifindex: Link layer interface index used for this connection.
+ * @proto_head: Protocol head-space needed by CAIF protocol,
+ * excluding link layer.
+ * @proto_tail: Protocol tail-space needed by CAIF protocol,
+ * excluding link layer.
*/
int cfcnfg_add_adaptation_layer(struct cfcnfg *cnfg,
struct cfctrl_link_param *param,
- struct cflayer *adap_layer);
+ struct cflayer *adap_layer,
+ int *ifindex,
+ int *proto_head,
+ int *proto_tail);
/**
* cfcnfg_get_phyid() - Get physical ID, given type.