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caif: Use link layer MTU instead of fixed MTU

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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>
This commit is contained in:
Sjur Braendeland
2010-06-17 06:55:40 +00:00
committed by David S. Miller
parent a7da1f55a8
commit 2aa40aef9d
15 changed files with 173 additions and 69 deletions
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7
net/caif/cfserl.c
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@@ -14,7 +14,8 @@
#define container_obj(layr) ((struct cfserl *) layr)
#define CFSERL_STX 0x02
#define CAIF_MINIUM_PACKET_SIZE 4
#define SERIAL_MINIUM_PACKET_SIZE 4
#define SERIAL_MAX_FRAMESIZE 4096
struct cfserl {
struct cflayer layer;
struct cfpkt *incomplete_frm;
@@ -119,8 +120,8 @@ static int cfserl_receive(struct cflayer *l, struct cfpkt *newpkt)
/*
* Frame error handling
*/
if (expectlen < CAIF_MINIUM_PACKET_SIZE
|| expectlen > CAIF_MAX_FRAMESIZE) {
if (expectlen < SERIAL_MINIUM_PACKET_SIZE
|| expectlen > SERIAL_MAX_FRAMESIZE) {
if (!layr->usestx) {
if (pkt != NULL)
cfpkt_destroy(pkt);