continue;
}
- /* Compute the amount of buffer space consumed by the
- * packet, including the status element. If the hardware
- * is configured to pad packet data to an aligned boundary,
- * account for that. And if checksum offload is is enabled
- * a trailer containing computed checksum information will
- * be appended.
+ /* Compute the amount of buffer space consumed by the packet,
+ * including the status element. If the hardware is configured
+ * to pad packet data to an aligned boundary, account for that.
+ * And if checksum offload is enabled a trailer containing
+ * computed checksum information will be appended.
*/
align = endpoint->data->rx.pad_align ? : 1;
len = le16_to_cpu(status->pkt_len);
if (endpoint->data->checksum)
len += sizeof(struct rmnet_map_dl_csum_trailer);
- /* Charge the new packet with a proportional fraction of
- * the unused space in the original receive buffer.
- * XXX Charge a proportion of the *whole* receive buffer?
- */
if (!ipa_status_drop_packet(status)) {
- u32 extra = unused * len / total_len;
- void *data2 = data + sizeof(*status);
- u32 len2 = le16_to_cpu(status->pkt_len);
+ void *data2;
+ u32 extra;
+ u32 len2;
/* Client receives only packet data (no status) */
+ data2 = data + sizeof(*status);
+ len2 = le16_to_cpu(status->pkt_len);
+
+ /* Have the true size reflect the extra unused space in
+ * the original receive buffer. Distribute the "cost"
+ * proportionately across all aggregated packets in the
+ * buffer.
+ */
+ extra = DIV_ROUND_CLOSEST(unused * len, total_len);
ipa_endpoint_skb_copy(endpoint, data2, len2, extra);
}