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common/sfc_efx/base: support encap header provisioning

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Let the client allocate / free encap. headers.

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 2021-03-12 14:07:40 +03:00 committed by Ferruh Yigit
parent 43af98e687
commit 308331681c
3 changed files with 178 additions and 0 deletions
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21
drivers/common/sfc_efx/base/efx.h
View File

@ -4070,6 +4070,7 @@ typedef struct efx_mae_limits_s {
uint32_t eml_max_n_action_prios;
uint32_t eml_max_n_outer_prios;
uint32_t eml_encap_types_supported;
uint32_t eml_encap_header_size_limit;
} efx_mae_limits_t;
LIBEFX_API
@ -4324,6 +4325,26 @@ efx_mae_match_spec_outer_rule_id_set(
__in efx_mae_match_spec_t *spec,
__in const efx_mae_rule_id_t *or_idp);
/* Encap. header ID */
typedef struct efx_mae_eh_id_s {
uint32_t id;
} efx_mae_eh_id_t;
LIBEFX_API
extern __checkReturn efx_rc_t
efx_mae_encap_header_alloc(
__in efx_nic_t *enp,
__in efx_tunnel_protocol_t encap_type,
__in_bcount(header_size) uint8_t *header_data,
__in size_t header_size,
__out efx_mae_eh_id_t *eh_idp);
LIBEFX_API
extern __checkReturn efx_rc_t
efx_mae_encap_header_free(
__in efx_nic_t *enp,
__in const efx_mae_eh_id_t *eh_idp);
/* Action set ID */
typedef struct efx_mae_aset_id_s {
uint32_t id;

155
drivers/common/sfc_efx/base/efx_mae.c
View File

@ -352,6 +352,8 @@ efx_mae_get_limits(
emlp->eml_max_n_outer_prios = maep->em_max_n_outer_prios;
emlp->eml_max_n_action_prios = maep->em_max_n_action_prios;
emlp->eml_encap_types_supported = maep->em_encap_types_supported;
emlp->eml_encap_header_size_limit =
MC_CMD_MAE_ENCAP_HEADER_ALLOC_IN_HDR_DATA_MAXNUM_MCDI2;
return (0);
@ -1690,6 +1692,159 @@ efx_mae_match_spec_outer_rule_id_set(
return (0);
fail3:
EFSYS_PROBE(fail3);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);
return (rc);
}
__checkReturn efx_rc_t
efx_mae_encap_header_alloc(
__in efx_nic_t *enp,
__in efx_tunnel_protocol_t encap_type,
__in_bcount(header_size) uint8_t *header_data,
__in size_t header_size,
__out efx_mae_eh_id_t *eh_idp)
{
const efx_nic_cfg_t *encp = efx_nic_cfg_get(enp);
efx_mcdi_req_t req;
EFX_MCDI_DECLARE_BUF(payload,
MC_CMD_MAE_ENCAP_HEADER_ALLOC_IN_LENMAX_MCDI2,
MC_CMD_MAE_ENCAP_HEADER_ALLOC_OUT_LEN);
uint32_t encap_type_mcdi;
efx_mae_eh_id_t eh_id;
efx_rc_t rc;
EFX_STATIC_ASSERT(sizeof (eh_idp->id) ==
MC_CMD_MAE_ENCAP_HEADER_ALLOC_OUT_ENCAP_HEADER_ID_LEN);
EFX_STATIC_ASSERT(EFX_MAE_RSRC_ID_INVALID ==
MC_CMD_MAE_ENCAP_HEADER_ALLOC_OUT_ENCAP_HEADER_ID_NULL);
if (encp->enc_mae_supported == B_FALSE) {
rc = ENOTSUP;
goto fail1;
}
switch (encap_type) {
case EFX_TUNNEL_PROTOCOL_NONE:
encap_type_mcdi = MAE_MCDI_ENCAP_TYPE_NONE;
break;
case EFX_TUNNEL_PROTOCOL_VXLAN:
encap_type_mcdi = MAE_MCDI_ENCAP_TYPE_VXLAN;
break;
case EFX_TUNNEL_PROTOCOL_GENEVE:
encap_type_mcdi = MAE_MCDI_ENCAP_TYPE_GENEVE;
break;
case EFX_TUNNEL_PROTOCOL_NVGRE:
encap_type_mcdi = MAE_MCDI_ENCAP_TYPE_NVGRE;
break;
default:
rc = ENOTSUP;
goto fail2;
}
if (header_size >
MC_CMD_MAE_ENCAP_HEADER_ALLOC_IN_HDR_DATA_MAXNUM_MCDI2) {
rc = EINVAL;
goto fail3;
}
req.emr_cmd = MC_CMD_MAE_ENCAP_HEADER_ALLOC;
req.emr_in_buf = payload;
req.emr_in_length = MC_CMD_MAE_ENCAP_HEADER_ALLOC_IN_LEN(header_size);
req.emr_out_buf = payload;
req.emr_out_length = MC_CMD_MAE_ENCAP_HEADER_ALLOC_OUT_LEN;
MCDI_IN_SET_DWORD(req,
MAE_ENCAP_HEADER_ALLOC_IN_ENCAP_TYPE, encap_type_mcdi);
memcpy(payload + MC_CMD_MAE_ENCAP_HEADER_ALLOC_IN_HDR_DATA_OFST,
header_data, header_size);
efx_mcdi_execute(enp, &req);
if (req.emr_rc != 0) {
rc = req.emr_rc;
goto fail4;
}
if (req.emr_out_length_used < MC_CMD_MAE_ENCAP_HEADER_ALLOC_OUT_LEN) {
rc = EMSGSIZE;
goto fail5;
}
eh_id.id = MCDI_OUT_DWORD(req,
MAE_ENCAP_HEADER_ALLOC_OUT_ENCAP_HEADER_ID);
if (eh_id.id == EFX_MAE_RSRC_ID_INVALID) {
rc = ENOENT;
goto fail6;
}
eh_idp->id = eh_id.id;
return (0);
fail6:
EFSYS_PROBE(fail6);
fail5:
EFSYS_PROBE(fail5);
fail4:
EFSYS_PROBE(fail4);
fail3:
EFSYS_PROBE(fail3);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);
return (rc);
}
__checkReturn efx_rc_t
efx_mae_encap_header_free(
__in efx_nic_t *enp,
__in const efx_mae_eh_id_t *eh_idp)
{
const efx_nic_cfg_t *encp = efx_nic_cfg_get(enp);
efx_mcdi_req_t req;
EFX_MCDI_DECLARE_BUF(payload,
MC_CMD_MAE_ENCAP_HEADER_FREE_IN_LEN(1),
MC_CMD_MAE_ENCAP_HEADER_FREE_OUT_LEN(1));
efx_rc_t rc;
if (encp->enc_mae_supported == B_FALSE) {
rc = ENOTSUP;
goto fail1;
}
req.emr_cmd = MC_CMD_MAE_ENCAP_HEADER_FREE;
req.emr_in_buf = payload;
req.emr_in_length = MC_CMD_MAE_ENCAP_HEADER_FREE_IN_LEN(1);
req.emr_out_buf = payload;
req.emr_out_length = MC_CMD_MAE_ENCAP_HEADER_FREE_OUT_LEN(1);
MCDI_IN_SET_DWORD(req, MAE_ENCAP_HEADER_FREE_IN_EH_ID, eh_idp->id);
efx_mcdi_execute(enp, &req);
if (req.emr_rc != 0) {
rc = req.emr_rc;
goto fail2;
}
if (MCDI_OUT_DWORD(req, MAE_ENCAP_HEADER_FREE_OUT_FREED_EH_ID) !=
eh_idp->id) {
/* Firmware failed to remove the encap. header. */
rc = EAGAIN;
goto fail3;
}
return (0);
fail3:
EFSYS_PROBE(fail3);
fail2:

2
drivers/common/sfc_efx/version.map
View File

@ -98,6 +98,8 @@ INTERNAL {
efx_mae_action_set_spec_fini;
efx_mae_action_set_spec_init;
efx_mae_action_set_specs_equal;
efx_mae_encap_header_alloc;
efx_mae_encap_header_free;
efx_mae_fini;
efx_mae_get_limits;
efx_mae_init;