Change in osmo-e1d[master]: usb: Pass not just the actual transfer length but also the buffer size

[laforge]

laforge has uploaded this change for review. ( 
https://gerrit.osmocom.org/c/osmo-e1d/+/27578 )


Change subject: usb: Pass not just the actual transfer length but also the 
buffer size
......................................................................

usb: Pass not just the actual transfer length but also the buffer size

Change-Id: I5088a5213d2945fdfaf3b242a63e35d0ed511914
---
M src/usb.c
1 file changed, 9 insertions(+), 7 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-e1d refs/changes/78/27578/1

diff --git a/src/usb.c b/src/usb.c
index 40518d8..4d30742 100644
--- a/src/usb.c
+++ b/src/usb.c
@@ -104,7 +104,8 @@
        struct libusb_transfer *xfr;
 };

-typedef int (*xfer_cb_t)(struct e1_usb_flow *flow, uint8_t *buf, int len);
+/* len == actual length, size == underlying size of buffer */
+typedef int (*xfer_cb_t)(struct e1_usb_flow *flow, uint8_t *buf, int len, 
size_t size);

 struct e1_usb_flow {
        struct e1_line *line;
@@ -124,7 +125,7 @@
 // ---------------------------------------------------------------------------

 static int
-e1_usb_xfer_in(struct e1_usb_flow *flow, uint8_t *buf, int len)
+e1_usb_xfer_in(struct e1_usb_flow *flow, uint8_t *buf, int len, size_t size)
 {
        if (len == 0)
                return 0;
@@ -132,7 +133,7 @@
 }

 static int
-e1_usb_xfer_out(struct e1_usb_flow *flow, uint8_t *buf, int len)
+e1_usb_xfer_out(struct e1_usb_flow *flow, uint8_t *buf, int len, size_t size)
 {
        struct e1_line *line = flow->line;
        struct e1_usb_line_data *ld = (struct e1_usb_line_data *) 
line->drv_data;
@@ -161,7 +162,7 @@
 }

 static int
-e1_usb_xfer_fb(struct e1_usb_flow *flow, uint8_t *buf, int len)
+e1_usb_xfer_fb(struct e1_usb_flow *flow, uint8_t *buf, int len, size_t size)
 {
        struct e1_usb_line_data *ld = (struct e1_usb_line_data *) 
flow->line->drv_data;

@@ -216,7 +217,8 @@
                        }
                        flow->cb(flow,
                                libusb_get_iso_packet_buffer_simple(xfr, j),
-                               (iso_pd->status == LIBUSB_TRANSFER_COMPLETED) ? 
 (int)iso_pd->actual_length : -1
+                               (iso_pd->status == LIBUSB_TRANSFER_COMPLETED) ? 
 (int)iso_pd->actual_length : -1,
+                               iso_pd->length
                        );
                        len += (iso_pd->length = flow->size);
                }
@@ -227,7 +229,7 @@
                                LOGPLI(flow->line, DE1D, LOGL_ERROR, "OUT EP 
%02x ISO packet %d failed with status %s\n",
                                        flow->ep, j, 
get_value_string(libusb_status_str, iso_pd->status));
                        }
-                       len += (iso_pd->length = flow->cb(flow, 
&xfr->buffer[len], flow->size));
+                       len += (iso_pd->length = flow->cb(flow, 
&xfr->buffer[len], flow->size, flow->size));
                }
        }

@@ -300,7 +302,7 @@
                                len += (xfr->iso_packet_desc[j].length = 
flow->size);
                } else {
                        for (j = 0; j < flow->ppx; j++)
-                               len += (xfr->iso_packet_desc[j].length = 
flow->cb(flow, &flow->entries[i].buf[len], flow->size));
+                               len += (xfr->iso_packet_desc[j].length = 
flow->cb(flow, &flow->entries[i].buf[len], flow->size, flow->size));
                }

                libusb_fill_iso_transfer(xfr, id->devh, flow->ep,

--
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Gerrit-Project: osmo-e1d
Gerrit-Branch: master
Gerrit-Change-Id: I5088a5213d2945fdfaf3b242a63e35d0ed511914
Gerrit-Change-Number: 27578
Gerrit-PatchSet: 1
Gerrit-Owner: laforge <lafo...@osmocom.org>
Gerrit-MessageType: newchange