From: Alex Elder Date: Sun, 22 May 2022 00:32:15 +0000 (-0500) Subject: net: ipa: make endpoint HOLB drop configurable X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=153213f0554d5053d5f9385ae6b4f116c4dc1fb8;p=linux.git 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: Alex Elder Signed-off-by: David S. Miller --- diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c index 0f489723689c5..3ad97fbf6884e 100644 --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -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); diff --git a/drivers/net/ipa/ipa_endpoint.h b/drivers/net/ipa/ipa_endpoint.h index 39a12c249f66d..3ab62fb892ec6 100644 --- a/drivers/net/ipa/ipa_endpoint.h +++ b/drivers/net/ipa/ipa_endpoint.h @@ -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; }; /**