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common/sfc_efx/base: query RSS queue span limit on Riverhead

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On Riverhead boards, clients can query the limit on how many
queues an RSS context may address. Put the capability to use.

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>
This commit is contained in:
Ivan Malov 2022-02-01 11:49:56 +03:00 committed by Ferruh Yigit
parent 6da67e706d
commit 777da15056
4 changed files with 23 additions and 3 deletions
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14
drivers/common/sfc_efx/base/ef10_nic.c
View File

@ -1051,14 +1051,14 @@ ef10_get_datapath_caps(
efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
efx_mcdi_req_t req;
EFX_MCDI_DECLARE_BUF(payload, MC_CMD_GET_CAPABILITIES_IN_LEN,
MC_CMD_GET_CAPABILITIES_V7_OUT_LEN);
MC_CMD_GET_CAPABILITIES_V9_OUT_LEN);
efx_rc_t rc;
req.emr_cmd = MC_CMD_GET_CAPABILITIES;
req.emr_in_buf = payload;
req.emr_in_length = MC_CMD_GET_CAPABILITIES_IN_LEN;
req.emr_out_buf = payload;
req.emr_out_length = MC_CMD_GET_CAPABILITIES_V7_OUT_LEN;
req.emr_out_length = MC_CMD_GET_CAPABILITIES_V9_OUT_LEN;
efx_mcdi_execute_quiet(enp, &req);
@ -1466,6 +1466,16 @@ ef10_get_datapath_caps(
encp->enc_mae_admin = B_FALSE;
#endif /* EFSYS_OPT_MAE */
#if EFSYS_OPT_RX_SCALE
if (req.emr_out_length_used >= MC_CMD_GET_CAPABILITIES_V9_OUT_LEN) {
encp->enc_rx_scale_indirection_max_nqueues =
MCDI_OUT_DWORD(req,
GET_CAPABILITIES_V9_OUT_RSS_MAX_INDIRECTION_QUEUES);
} else {
encp->enc_rx_scale_indirection_max_nqueues = EFX_MAXRSS;
}
#endif /* EFSYS_OPT_RX_SCALE */
#undef CAP_FLAGS1
#undef CAP_FLAGS2
#undef CAP_FLAGS3

3
drivers/common/sfc_efx/base/ef10_rx.c
View File

@ -18,6 +18,7 @@ efx_mcdi_rss_context_alloc(
__in uint32_t num_queues,
__out uint32_t *rss_contextp)
{
const efx_nic_cfg_t *encp = efx_nic_cfg_get(enp);
efx_mcdi_req_t req;
EFX_MCDI_DECLARE_BUF(payload, MC_CMD_RSS_CONTEXT_ALLOC_IN_LEN,
MC_CMD_RSS_CONTEXT_ALLOC_OUT_LEN);
@ -25,7 +26,7 @@ efx_mcdi_rss_context_alloc(
uint32_t context_type;
efx_rc_t rc;
if (num_queues > EFX_MAXRSS) {
if (num_queues > encp->enc_rx_scale_indirection_max_nqueues) {
rc = EINVAL;
goto fail1;
}

7
drivers/common/sfc_efx/base/efx.h
View File

@ -1495,6 +1495,13 @@ typedef struct efx_nic_cfg_s {
uint32_t enc_rx_buf_align_start;
uint32_t enc_rx_buf_align_end;
#if EFSYS_OPT_RX_SCALE
/*
* The limit on how many queues an RSS indirection table can address.
*
* Indirection table entries are offsets relative to a base queue ID.
* This means that the maximum offset has to be less than this value.
*/
uint32_t enc_rx_scale_indirection_max_nqueues;
uint32_t enc_rx_scale_max_exclusive_contexts;
/*
* Mask of supported hash algorithms.

2
drivers/common/sfc_efx/base/siena_nic.c
View File

@ -119,6 +119,8 @@ siena_board_cfg(
encp->enc_rx_push_align = 1;
#if EFSYS_OPT_RX_SCALE
encp->enc_rx_scale_indirection_max_nqueues = EFX_MAXRSS;
/* There is one RSS context per function */
encp->enc_rx_scale_max_exclusive_contexts = 1;