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sfxge(4): use MCDIv2 for requests with too long response

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Use MCDIv2 for requests with a response size too long for MCDIv1.

Required for MC_CMD_MAC_STATS to reports the stats without using DMA.

Submitted by:   Mark Spender <mspender at solarflare.com>
Sponsored by:   Solarflare Communications, Inc.
Differential Revision:  https://reviews.freebsd.org/D18103
This commit is contained in:
Andrew Rybchenko 2018-11-23 15:59:37 +00:00
parent 63cbe8d1d9
commit 641c3370f4
1 changed files with 2 additions and 1 deletions
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3
sys/dev/sfxge/common/efx_mcdi.c
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@ -295,7 +295,8 @@ efx_mcdi_request_start(
*/
if ((max_version >= 2) &&
((emrp->emr_cmd > MC_CMD_CMD_SPACE_ESCAPE_7) ||
(emrp->emr_in_length > MCDI_CTL_SDU_LEN_MAX_V1))) {
(emrp->emr_in_length > MCDI_CTL_SDU_LEN_MAX_V1) ||
(emrp->emr_out_length > MCDI_CTL_SDU_LEN_MAX_V1))) {
/* Construct MCDI v2 header */
hdr_len = sizeof (hdr);
EFX_POPULATE_DWORD_8(hdr[0],