Commit 153213f0 authored by Alex Elder's avatar Alex Elder Committed by David S. Miller
Browse files

net: ipa: make endpoint HOLB drop configurable 



Add a new Boolean flag for RX endpoints defining whether HOLB drop
is initially enabled or disabled for the endpoint.  All existing AP
endpoints should have HOLB drop disabled.

Signed-off-by: default avatarAlex Elder <elder@linaro.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 60f243ad

drivers/net/ipa/ipa_endpoint.c

+6 −2
Original line number Diff line number Diff line
@@ -1554,8 +1554,12 @@ static void ipa_endpoint_program(struct ipa_endpoint *endpoint) 
	ipa_endpoint_init_hdr_metadata_mask(endpoint);

	ipa_endpoint_init_mode(endpoint);

	ipa_endpoint_init_aggr(endpoint);

	if (!endpoint->toward_ipa)

	if (!endpoint->toward_ipa) {

		if (endpoint->config.rx.holb_drop)

			ipa_endpoint_init_hol_block_enable(endpoint, 0);

		else

			ipa_endpoint_init_hol_block_disable(endpoint);

	}

	ipa_endpoint_init_deaggr(endpoint);

	ipa_endpoint_init_rsrc_grp(endpoint);

	ipa_endpoint_init_seq(endpoint);

drivers/net/ipa/ipa_endpoint.h

+2 −0
Original line number Diff line number Diff line
@@ -60,6 +60,7 @@ struct ipa_endpoint_tx { 
 * @buffer_size:	requested receive buffer size (bytes)

 * @pad_align:		power-of-2 boundary to which packet payload is aligned

 * @aggr_close_eof:	whether aggregation closes on end-of-frame

 * @holb_drop:		whether to drop packets to avoid head-of-line blocking

 *

 * With each packet it transfers, the IPA hardware can perform certain

 * transformations of its packet data.  One of these is adding pad bytes
@@ -74,6 +75,7 @@ struct ipa_endpoint_rx { 
	u32 buffer_size;

	u32 pad_align;

	bool aggr_close_eof;

	bool holb_drop;

};



/**