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| author | Michael Brown | 2015-03-16 06:39:41 +0100 |
|---|---|---|
| committer | Michael Brown | 2015-03-16 16:40:54 +0100 |
| commit | 74f57016dcec849315f7af52cdc429c676748267 (patch) | |
| tree | 34d12144758483c009ee065b09de47fa739f8991 | |
| parent | [usb] Add the concept of a USB bus maximum transfer size (diff) | |
| download | ipxe-74f57016dcec849315f7af52cdc429c676748267.tar.gz ipxe-74f57016dcec849315f7af52cdc429c676748267.tar.xz ipxe-74f57016dcec849315f7af52cdc429c676748267.zip | |
[ncm] Respect maximum transfer size of the bus
Signed-off-by: Michael Brown <mcb30@ipxe.org>
| -rw-r--r-- | src/drivers/net/ncm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/drivers/net/ncm.c b/src/drivers/net/ncm.c index 8620985b..10728d2a 100644 --- a/src/drivers/net/ncm.c +++ b/src/drivers/net/ncm.c @@ -157,6 +157,7 @@ static struct usb_endpoint_driver_operations ncm_intr_operations = { * @ret rc Return status code */ static int ncm_in_prefill ( struct ncm_device *ncm ) { + struct usb_bus *bus = ncm->bus; size_t mtu; unsigned int count; int rc; @@ -178,6 +179,8 @@ static int ncm_in_prefill ( struct ncm_device *ncm ) { /* Attempt allocation at this MTU */ if ( mtu > NCM_MAX_NTB_INPUT_SIZE ) continue; + if ( mtu > bus->mtu ) + continue; count = ( NCM_IN_MIN_SIZE / mtu ); if ( count < NCM_IN_MIN_COUNT ) count = NCM_IN_MIN_COUNT; |