diff options
Diffstat (limited to 'drivers/net/ipa/ipa_endpoint.h')
| -rw-r--r-- | drivers/net/ipa/ipa_endpoint.h | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/net/ipa/ipa_endpoint.h b/drivers/net/ipa/ipa_endpoint.h index 39a12c249f66..01790c60bee8 100644 --- a/drivers/net/ipa/ipa_endpoint.h +++ b/drivers/net/ipa/ipa_endpoint.h @@ -59,7 +59,13 @@ struct ipa_endpoint_tx { * struct ipa_endpoint_rx - Endpoint configuration for RX endpoints * @buffer_size: requested receive buffer size (bytes) * @pad_align: power-of-2 boundary to which packet payload is aligned + * @aggr_time_limit: time before aggregation closes (microseconds) + * @aggr_hard_limit: whether aggregation closes before or after boundary * @aggr_close_eof: whether aggregation closes on end-of-frame + * @holb_drop: whether to drop packets to avoid head-of-line blocking + * + * The actual size of the receive buffer is rounded up if necessary + * to be a power-of-2 number of pages. * * With each packet it transfers, the IPA hardware can perform certain * transformations of its packet data. One of these is adding pad bytes @@ -67,13 +73,26 @@ struct ipa_endpoint_tx { * * It is also able to aggregate multiple packets into a single receive buffer. * Aggregation is "open" while a buffer is being filled, and "closes" when - * certain criteria are met. One of those criteria is the sender indicating - * a "frame" consisting of several transfers has ended. + * certain criteria are met. + * + * A time limit can be specified to close aggregation. Aggregation will be + * closed if this period passes after data is first written into a receive + * buffer. If not specified, no time limit is imposed. + * + * Insufficient space available in the receive buffer can close aggregation. + * The aggregation byte limit defines the point (in units of 1024 bytes) in + * the buffer where aggregation closes. With a "soft" aggregation limit, + * aggregation closes when a packet written to the buffer *crosses* that + * aggregation limit. With a "hard" aggregation limit, aggregation will + * close *before* writing a packet that would cross that boundary. */ struct ipa_endpoint_rx { u32 buffer_size; u32 pad_align; + u32 aggr_time_limit; + bool aggr_hard_limit; bool aggr_close_eof; + bool holb_drop; }; /** |