caif: Bugfix - RFM must support segmentation.

CAIF Remote File Manager may send or receive more than 4050 bytes. Due to this The CAIF RFM service have to support segmentation. Signed-off-by: Sjur [email protected] Signed-off-by: David S. Miller <[email protected]>
josf · Jun 21, 2010 · a7da1f5 · a7da1f5
1 parent b1c7424
commit a7da1f5
Show file tree

Hide file tree

Showing 6 changed files with 278 additions and 67 deletions.
diff --git a/include/net/caif/cfsrvl.h b/include/net/caif/cfsrvl.h
@@ -17,6 +17,7 @@ struct cfsrvl {
 	bool phy_flow_on;
 	bool modem_flow_on;
 	bool supports_flowctrl;
+	void (*release)(struct kref *);
 	struct dev_info dev_info;
 	struct kref ref;
 };
@@ -26,7 +27,8 @@ struct cflayer *cfvei_create(u8 linkid, struct dev_info *dev_info);
 struct cflayer *cfdgml_create(u8 linkid, struct dev_info *dev_info);
 struct cflayer *cfutill_create(u8 linkid, struct dev_info *dev_info);
 struct cflayer *cfvidl_create(u8 linkid, struct dev_info *dev_info);
-struct cflayer *cfrfml_create(u8 linkid, struct dev_info *dev_info);
+struct cflayer *cfrfml_create(u8 linkid, struct dev_info *dev_info,
+				int mtu_size);
 struct cflayer *cfdbgl_create(u8 linkid, struct dev_info *dev_info);
 bool cfsrvl_phyid_match(struct cflayer *layer, int phyid);
 void cfservl_destroy(struct cflayer *layer);
@@ -52,7 +54,10 @@ static inline void cfsrvl_put(struct cflayer *layr)
 	if (layr == NULL)
 		return;
 	s = container_of(layr, struct cfsrvl, layer);
-	kref_put(&s->ref, cfsrvl_release);
+
+	WARN_ON(!s->release);
+	if (s->release)
+		kref_put(&s->ref, s->release);
 }
 
 #endif				/* CFSRVL_H_ */
diff --git a/net/caif/caif_socket.c b/net/caif/caif_socket.c
@@ -596,10 +596,6 @@ static int caif_seqpkt_sendmsg(struct kiocb *kiocb, struct socket *sock,
 
 	buffer_size = len + CAIF_NEEDED_HEADROOM + CAIF_NEEDED_TAILROOM;
 
-	ret = -EMSGSIZE;
-	if (buffer_size > CAIF_MAX_PAYLOAD_SIZE)
-		goto err;
-
 	timeo = sock_sndtimeo(sk, noblock);
 	timeo = caif_wait_for_flow_on(container_of(sk, struct caifsock, sk),
 				1, timeo, &ret);

diff --git a/net/caif/cfcnfg.c b/net/caif/cfcnfg.c
@@ -22,6 +22,7 @@
 #define PHY_NAME_LEN 20
 
 #define container_obj(layr) container_of(layr, struct cfcnfg, layer)
+#define RFM_FRAGMENT_SIZE 4030
 
 /* Information about CAIF physical interfaces held by Config Module in order
  * to manage physical interfaces
@@ -328,7 +329,8 @@ cfcnfg_linkup_rsp(struct cflayer *layer, u8 channel_id, enum cfctrl_srv serv,
 		servicel = cfdgml_create(channel_id, &phyinfo->dev_info);
 		break;
 	case CFCTRL_SRV_RFM:
-		servicel = cfrfml_create(channel_id, &phyinfo->dev_info);
+		servicel = cfrfml_create(channel_id, &phyinfo->dev_info,
+						RFM_FRAGMENT_SIZE);
 		break;
 	case CFCTRL_SRV_UTIL:
 		servicel = cfutill_create(channel_id, &phyinfo->dev_info);

diff --git a/net/caif/cfpkt_skbuff.c b/net/caif/cfpkt_skbuff.c
@@ -338,7 +338,6 @@ struct cfpkt *cfpkt_append(struct cfpkt *dstpkt,
 	u16 dstlen;
 	u16 createlen;
 	if (unlikely(is_erronous(dstpkt) || is_erronous(addpkt))) {
-		cfpkt_destroy(addpkt);
 		return dstpkt;
 	}
 	if (expectlen > addlen)