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net: ipa: make endpoint HOLB drop configurable

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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: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alex Elder 2022-05-21 19:32:15 -05:00 committed by David S. Miller
parent 60f243ad14
commit 153213f055
2 changed files with 8 additions and 2 deletions
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8
drivers/net/ipa/ipa_endpoint.c
View File

@ -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)
ipa_endpoint_init_hol_block_disable(endpoint);
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);

2
drivers/net/ipa/ipa_endpoint.h
View File

@ -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;
};
/**