Re: Is this 32-bit NCM?

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Testing it right now - let you know in a moment.


On Tue, 2 Dec 2014, Bjørn Mork wrote:

==Date: Tue, 2 Dec 2014 12:21:18
==From: Bjørn Mork <bjorn@xxxxxxx>
==To: Enrico Mioso <mrkiko.rs@xxxxxxxxx>
==Cc: Kevin Zhu <Mingying.Zhu@xxxxxxxxxxxxxx>,
==    Eli Britstein <Eli.Britstein@xxxxxxxxxxxxxx>,
==    Alex Strizhevsky <alexxst@xxxxxxxxx>,
==    Midge Shaojun Tan <ShaojunMidge.Tan@xxxxxxxxxxxxxx>,
==    "youtux@xxxxxxxxx" <youtux@xxxxxxxxx>,
==    "linux-usb@xxxxxxxxxxxxxxx" <linux-usb@xxxxxxxxxxxxxxx>,
==    "netdev@xxxxxxxxxxxxxxx" <netdev@xxxxxxxxxxxxxxx>
==Subject: Re: Is this 32-bit NCM?
==
==Enrico Mioso <mrkiko.rs@xxxxxxxxx> writes:
==
==> Kevin - it works! the key seems to be in the tx_fixup function; there is a 
==> special handling for frames effectively.
==> Please ... help me backport those changes to the standard Linux driver - it 
==> will be a gain for us all, and in general you'll have a more probable 
==> maintenance than you would with the driver from huawei.
==
==Very interesting.  The NCM code in the huawei driver has a different
==origin, so it is quite different and not too easy to merge into the
==existing Linux cdc_ncm driver.
==
==But this does pinpoint differences we should explore.  One is the
==placement of the NDP: The Huawei driver puts it at the end.  Another,
==which is much easier to test out quickly, is the sequence numbering: The
==Huawei driver doesn't use it.
==
==So I wonder if this makes any difference:
==
==diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
==index 80a844e0ae03..37f11770acb6 100644
==--- a/drivers/net/usb/cdc_ncm.c
==+++ b/drivers/net/usb/cdc_ncm.c
==@@ -1049,7 +1049,7 @@ cdc_ncm_fill_tx_frame(struct usbnet *dev, struct sk_buff *skb, __le32 sign)
== 		nth16 = (struct usb_cdc_ncm_nth16 *)memset(skb_put(skb_out, sizeof(struct usb_cdc_ncm_nth16)), 0, sizeof(struct usb_cdc_ncm_nth16));
== 		nth16->dwSignature = cpu_to_le32(USB_CDC_NCM_NTH16_SIGN);
== 		nth16->wHeaderLength = cpu_to_le16(sizeof(struct usb_cdc_ncm_nth16));
==-		nth16->wSequence = cpu_to_le16(ctx->tx_seq++);
==+//		nth16->wSequence = cpu_to_le16(ctx->tx_seq++);
== 
== 		/* count total number of frames in this NTB */
== 		ctx->tx_curr_frame_num = 0;
==
==
==
==Bjørn
==

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