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| author | Sjur Braendeland <sjur.brandeland@stericsson.com> | 2010-06-17 06:55:40 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-06-20 19:46:06 -0700 |
| commit | 2aa40aef9debc77d55cc87a50d335b6fe97fbeb0 (patch) | |
| tree | 0dccf47cf6cb861c7efa72601fab9511760c7e74 /net/caif/cfdgml.c | |
| parent | a7da1f55a826c621251874e7684c234972fc3216 (diff) | |
| download | linux-2aa40aef9debc77d55cc87a50d335b6fe97fbeb0.tar.gz linux-2aa40aef9debc77d55cc87a50d335b6fe97fbeb0.tar.bz2 linux-2aa40aef9debc77d55cc87a50d335b6fe97fbeb0.zip | |
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>
Diffstat (limited to 'net/caif/cfdgml.c')
| -rw-r--r-- | net/caif/cfdgml.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/caif/cfdgml.c b/net/caif/cfdgml.c index 32d9f0dc8463..ed9d53aff280 100644 --- a/net/caif/cfdgml.c +++ b/net/caif/cfdgml.c @@ -17,6 +17,7 @@ #define DGM_FLOW_OFF 0x81 #define DGM_FLOW_ON 0x80 #define DGM_CTRL_PKT_SIZE 1 +#define DGM_MTU 1500 static int cfdgml_receive(struct cflayer *layr, struct cfpkt *pkt); static int cfdgml_transmit(struct cflayer *layr, struct cfpkt *pkt); @@ -89,6 +90,10 @@ static int cfdgml_transmit(struct cflayer *layr, struct cfpkt *pkt) if (!cfsrvl_ready(service, &ret)) return ret; + /* STE Modem cannot handle more than 1500 bytes datagrams */ + if (cfpkt_getlen(pkt) > DGM_MTU) + return -EMSGSIZE; + cfpkt_add_head(pkt, &zero, 4); /* Add info for MUX-layer to route the packet out. */ |