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common/sfc_efx/base: add API to get Rx prefix information

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Define default Siena, EF10 default, packed stream, equal-stride
superbuffer and Riverhead default prefixes in order to make an API
to get Rx prefix layout information generic and usable on all NICs.

Riverhead supports many Rx prefixes. Riverhead FW supports MCDI to
choose Rx prefix based on required Rx prefix fields and allows to
query the prefix layout using MCDI. The patch prepares to introduce
the support in libefx and provides fallback for NICs and FW which
lacks the support.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>
This commit is contained in:
Andrew Rybchenko 2020-09-24 13:12:15 +01:00 committed by Ferruh Yigit
parent d354c5e776
commit 6bba823fb6
7 changed files with 201 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

80
drivers/common/sfc_efx/base/ef10_rx.c
View File

@ -549,8 +549,8 @@ fail1:
#if EFX_OPTS_EF10()
/*
* EF10 RX pseudo-header
* ---------------------
* EF10 RX pseudo-header (aka Rx prefix)
* -------------------------------------
*
* Receive packets are prefixed by an (optional) 14 byte pseudo-header:
*
@ -566,7 +566,77 @@ fail1:
* (32bit little-endian)
*
* See "The RX Pseudo-header" in SF-109306-TC.
*
* EF10 does not support Rx prefix choice using MC_CMD_GET_RX_PREFIX_ID
* and query its layout using MC_CMD_QUERY_RX_PREFIX_ID.
*/
static const efx_rx_prefix_layout_t ef10_default_rx_prefix_layout = {
.erpl_id = 0,
.erpl_length = 14,
.erpl_fields = {
[EFX_RX_PREFIX_FIELD_RSS_HASH] =
{ 0, 32, B_FALSE },
[EFX_RX_PREFIX_FIELD_VLAN_STRIP_TCI] =
{ 32, 16, B_TRUE },
[EFX_RX_PREFIX_FIELD_INNER_VLAN_STRIP_TCI] =
{ 48, 16, B_TRUE },
[EFX_RX_PREFIX_FIELD_LENGTH] =
{ 64, 16, B_FALSE },
[EFX_RX_PREFIX_FIELD_PARTIAL_TSTAMP] =
{ 80, 32, B_FALSE },
}
};
#if EFSYS_OPT_RX_PACKED_STREAM
/*
* EF10 packed stream Rx prefix layout.
*
* See SF-112241-TC Full speed capture for Huntington and Medford section 4.5.
*/
static const efx_rx_prefix_layout_t ef10_packed_stream_rx_prefix_layout = {
.erpl_id = 0,
.erpl_length = 8,
.erpl_fields = {
#define EF10_PS_RX_PREFIX_FIELD(_efx, _ef10) \
EFX_RX_PREFIX_FIELD(_efx, ES_DZ_PS_RX_PREFIX_ ## _ef10, B_FALSE)
EF10_PS_RX_PREFIX_FIELD(PARTIAL_TSTAMP, TSTAMP),
EF10_PS_RX_PREFIX_FIELD(LENGTH, CAP_LEN),
EF10_PS_RX_PREFIX_FIELD(ORIG_LENGTH, ORIG_LEN),
#undef EF10_PS_RX_PREFIX_FIELD
}
};
#endif /* EFSYS_OPT_RX_PACKED_STREAM */
#if EFSYS_OPT_RX_ES_SUPER_BUFFER
/*
* EF10 equal stride super-buffer Rx prefix layout.
*
* See SF-119419-TC DPDK Firmware Driver Interface section 3.4.
*/
static const efx_rx_prefix_layout_t ef10_essb_rx_prefix_layout = {
.erpl_id = 0,
.erpl_length = ES_EZ_ESSB_RX_PREFIX_LEN,
.erpl_fields = {
#define EF10_ESSB_RX_PREFIX_FIELD(_efx, _ef10) \
EFX_RX_PREFIX_FIELD(_efx, ES_EZ_ESSB_RX_PREFIX_ ## _ef10, B_FALSE)
EF10_ESSB_RX_PREFIX_FIELD(LENGTH, DATA_LEN),
EF10_ESSB_RX_PREFIX_FIELD(USER_MARK, MARK),
EF10_ESSB_RX_PREFIX_FIELD(RSS_HASH_VALID, HASH_VALID),
EF10_ESSB_RX_PREFIX_FIELD(USER_MARK_VALID, MARK_VALID),
EF10_ESSB_RX_PREFIX_FIELD(USER_FLAG, MATCH_FLAG),
EF10_ESSB_RX_PREFIX_FIELD(RSS_HASH, HASH),
#undef EF10_ESSB_RX_PREFIX_FIELD
}
};
#endif /* EFSYS_OPT_RX_ES_SUPER_BUFFER */
__checkReturn efx_rc_t
ef10_rx_prefix_pktlen(
@ -836,6 +906,7 @@ ef10_rx_qcreate(
__in efx_rxq_t *erp)
{
efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
const efx_rx_prefix_layout_t *erpl;
efx_rc_t rc;
boolean_t disable_scatter;
boolean_t want_inner_classes;
@ -852,6 +923,7 @@ ef10_rx_qcreate(
switch (type) {
case EFX_RXQ_TYPE_DEFAULT:
erpl = &ef10_default_rx_prefix_layout;
if (type_data == NULL) {
rc = EINVAL;
goto fail1;
@ -861,6 +933,7 @@ ef10_rx_qcreate(
break;
#if EFSYS_OPT_RX_PACKED_STREAM
case EFX_RXQ_TYPE_PACKED_STREAM:
erpl = &ef10_packed_stream_rx_prefix_layout;
if (type_data == NULL) {
rc = EINVAL;
goto fail2;
@ -890,6 +963,7 @@ ef10_rx_qcreate(
#endif /* EFSYS_OPT_RX_PACKED_STREAM */
#if EFSYS_OPT_RX_ES_SUPER_BUFFER
case EFX_RXQ_TYPE_ES_SUPER_BUFFER:
erpl = &ef10_essb_rx_prefix_layout;
if (type_data == NULL) {
rc = EINVAL;
goto fail4;
@ -973,6 +1047,8 @@ ef10_rx_qcreate(
erp->er_ev_qstate = &erp->er_eep->ee_rxq_state[label];
erp->er_prefix_layout = *erpl;
return (0);
fail11:

61
drivers/common/sfc_efx/base/efx.h
View File

@ -1396,6 +1396,7 @@ typedef struct efx_nic_cfg_s {
uint32_t enc_ev_desc_size;
uint32_t enc_rx_desc_size;
uint32_t enc_tx_desc_size;
/* Maximum Rx prefix size if many Rx prefixes are supported */
uint32_t enc_rx_prefix_size;
uint32_t enc_rx_buf_align_start;
uint32_t enc_rx_buf_align_end;
@ -2760,6 +2761,66 @@ efx_rxq_nbufs(
#define EFX_RXQ_LIMIT(_ndescs) ((_ndescs) - 16)
/*
* libefx representation of the Rx prefix layout information.
*
* The information may be used inside libefx to implement Rx prefix fields
* accessors and by drivers which process Rx prefix itself.
*/
/*
* All known Rx prefix fields.
*
* An Rx prefix may have a subset of these fields.
*/
typedef enum efx_rx_prefix_field_e {
EFX_RX_PREFIX_FIELD_LENGTH = 0,
EFX_RX_PREFIX_FIELD_ORIG_LENGTH,
EFX_RX_PREFIX_FIELD_CLASS,
EFX_RX_PREFIX_FIELD_RSS_HASH,
EFX_RX_PREFIX_FIELD_RSS_HASH_VALID,
EFX_RX_PREFIX_FIELD_PARTIAL_TSTAMP,
EFX_RX_PREFIX_FIELD_VLAN_STRIP_TCI,
EFX_RX_PREFIX_FIELD_INNER_VLAN_STRIP_TCI,
EFX_RX_PREFIX_FIELD_USER_FLAG,
EFX_RX_PREFIX_FIELD_USER_MARK,
EFX_RX_PREFIX_FIELD_USER_MARK_VALID,
EFX_RX_PREFIX_FIELD_CSUM_FRAME,
EFX_RX_PREFIX_FIELD_INGRESS_VPORT,
EFX_RX_PREFIX_NFIELDS
} efx_rx_prefix_field_t;
/*
* Location and endianness of a field in Rx prefix.
*
* If width is zero, the field is not present.
*/
typedef struct efx_rx_prefix_field_info_s {
uint16_t erpfi_offset_bits;
uint8_t erpfi_width_bits;
boolean_t erpfi_big_endian;
} efx_rx_prefix_field_info_t;
/* Helper macro to define Rx prefix fields */
#define EFX_RX_PREFIX_FIELD(_efx, _field, _big_endian) \
[EFX_RX_PREFIX_FIELD_ ## _efx] = { \
.erpfi_offset_bits = EFX_LOW_BIT(_field), \
.erpfi_width_bits = EFX_WIDTH(_field), \
.erpfi_big_endian = (_big_endian), \
}
typedef struct efx_rx_prefix_layout_s {
uint32_t erpl_id;
uint8_t erpl_length;
efx_rx_prefix_field_info_t erpl_fields[EFX_RX_PREFIX_NFIELDS];
} efx_rx_prefix_layout_t;
LIBEFX_API
extern __checkReturn efx_rc_t
efx_rx_prefix_get_layout(
__in const efx_rxq_t *erp,
__out efx_rx_prefix_layout_t *erplp);
typedef enum efx_rxq_type_e {
EFX_RXQ_TYPE_DEFAULT,
EFX_RXQ_TYPE_PACKED_STREAM,

1
drivers/common/sfc_efx/base/efx_impl.h
View File

@ -944,6 +944,7 @@ struct efx_rxq_s {
size_t er_buf_size;
efsys_mem_t *er_esmp;
efx_evq_rxq_state_t *er_ev_qstate;
efx_rx_prefix_layout_t er_prefix_layout;
};
#define EFX_RXQ_MAGIC 0x15022005

29
drivers/common/sfc_efx/base/efx_rx.c
View File

@ -1059,6 +1059,18 @@ efx_pseudo_hdr_hash_get(
}
#endif /* EFSYS_OPT_RX_SCALE */
__checkReturn efx_rc_t
efx_rx_prefix_get_layout(
__in const efx_rxq_t *erp,
__out efx_rx_prefix_layout_t *erplp)
{
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
*erplp = erp->er_prefix_layout;
return (0);
}
#if EFSYS_OPT_SIENA
static __checkReturn efx_rc_t
@ -1477,6 +1489,21 @@ fail1:
* LL.LL LFSR hash (16-bit big-endian)
*/
/*
* Provide Rx prefix layout with Toeplitz hash only since LSFR is
* used by no supported drivers.
*
* Siena does not support Rx prefix choice via MC_CMD_GET_RX_PREFIX_ID
* and query its layout using MC_CMD_QUERY_RX_PREFIX_ID.
*/
static const efx_rx_prefix_layout_t siena_toeplitz_rx_prefix_layout = {
.erpl_id = 0,
.erpl_length = 16,
.erpl_fields = {
[EFX_RX_PREFIX_FIELD_RSS_HASH] = { 12 * 8, 32, B_TRUE },
}
};
#if EFSYS_OPT_RX_SCALE
static __checkReturn uint32_t
siena_rx_prefix_hash(
@ -1719,6 +1746,8 @@ siena_rx_qcreate(
EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
erp->er_index, &oword, B_TRUE);
erp->er_prefix_layout = siena_toeplitz_rx_prefix_layout;
return (0);
#if !EFSYS_OPT_RX_SCATTER

1
drivers/common/sfc_efx/base/efx_types.h
View File

@ -1628,6 +1628,7 @@ extern int fix_lint;
#define EFX_AND_QWORD EFX_AND_QWORD32
#endif
#ifdef __cplusplus
}
#endif

30
drivers/common/sfc_efx/base/rhead_rx.c
View File

@ -10,6 +10,35 @@
#if EFSYS_OPT_RIVERHEAD
/*
* Default Rx prefix layout on Riverhead if FW does not support Rx
* prefix choice using MC_CMD_GET_RX_PREFIX_ID and query its layout
* using MC_CMD_QUERY_RX_PREFIX_ID.
*
* See SF-119689-TC Riverhead Host Interface section 6.4.
*/
static const efx_rx_prefix_layout_t rhead_default_rx_prefix_layout = {
.erpl_id = 0,
.erpl_length = ESE_GZ_RX_PKT_PREFIX_LEN,
.erpl_fields = {
#define RHEAD_RX_PREFIX_FIELD(_name, _big_endian) \
EFX_RX_PREFIX_FIELD(_name, ESF_GZ_RX_PREFIX_ ## _name, _big_endian)
RHEAD_RX_PREFIX_FIELD(LENGTH, B_FALSE),
RHEAD_RX_PREFIX_FIELD(RSS_HASH_VALID, B_FALSE),
RHEAD_RX_PREFIX_FIELD(USER_FLAG, B_FALSE),
RHEAD_RX_PREFIX_FIELD(CLASS, B_FALSE),
RHEAD_RX_PREFIX_FIELD(PARTIAL_TSTAMP, B_FALSE),
RHEAD_RX_PREFIX_FIELD(RSS_HASH, B_FALSE),
RHEAD_RX_PREFIX_FIELD(USER_MARK, B_FALSE),
RHEAD_RX_PREFIX_FIELD(INGRESS_VPORT, B_FALSE),
RHEAD_RX_PREFIX_FIELD(CSUM_FRAME, B_TRUE),
RHEAD_RX_PREFIX_FIELD(VLAN_STRIP_TCI, B_TRUE),
#undef RHEAD_RX_PREFIX_FIELD
}
};
__checkReturn efx_rc_t
rhead_rx_init(
__in efx_nic_t *enp)
@ -292,6 +321,7 @@ rhead_rx_qcreate(
erp->er_eep = eep;
erp->er_label = label;
erp->er_prefix_layout = rhead_default_rx_prefix_layout;
return (0);

1
drivers/common/sfc_efx/rte_common_sfc_efx_version.map
View File

@ -130,6 +130,7 @@ INTERNAL {
efx_rx_fini;
efx_rx_hash_default_support_get;
efx_rx_init;
efx_rx_prefix_get_layout;
efx_rx_qcreate;
efx_rx_qcreate_es_super_buffer;
efx_rx_qdestroy;