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sfxge(4): allow to request inner classes for Rx packets

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If HW/FW supports tunnel encapsulations, Rx event may contain
either inner or outer packet classes. By default outer classes
are requested. Make it possible to request inner classes to
have more information about packet type and allow to interpret
inner frame checksum validation results correctly.

Sponsored by:   Solarflare Communications, Inc.
Differential Revision:  https://reviews.freebsd.org/D18133
This commit is contained in:
Andrew Rybchenko 2018-11-24 18:13:34 +00:00
parent 074cfb5c75
commit 4ed151b893
2 changed files with 20 additions and 2 deletions
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13
sys/dev/sfxge/common/ef10_rx.c
View File

@ -47,6 +47,7 @@ efx_mcdi_init_rxq(
__in uint32_t instance,
__in efsys_mem_t *esmp,
__in boolean_t disable_scatter,
__in boolean_t want_inner_classes,
__in uint32_t ps_bufsize)
{
efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
@ -68,7 +69,8 @@ efx_mcdi_init_rxq(
else
dma_mode = MC_CMD_INIT_RXQ_EXT_IN_SINGLE_PACKET;
if (encp->enc_tunnel_encapsulations_supported != 0) {
if (encp->enc_tunnel_encapsulations_supported != 0 &&
!want_inner_classes) {
/*
* WANT_OUTER_CLASSES can only be specified on hardware which
* supports tunnel encapsulation offloads, even though it is
@ -962,6 +964,7 @@ ef10_rx_qcreate(
efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
efx_rc_t rc;
boolean_t disable_scatter;
boolean_t want_inner_classes;
unsigned int ps_buf_size;
_NOTE(ARGUNUSED(id, erp, type_data))
@ -1040,8 +1043,14 @@ ef10_rx_qcreate(
else
disable_scatter = encp->enc_rx_disable_scatter_supported;
if (flags & EFX_RXQ_FLAG_INNER_CLASSES)
want_inner_classes = B_TRUE;
else
want_inner_classes = B_FALSE;
if ((rc = efx_mcdi_init_rxq(enp, ndescs, eep->ee_index, label, index,
esmp, disable_scatter, ps_buf_size)) != 0)
esmp, disable_scatter, want_inner_classes,
ps_buf_size)) != 0)
goto fail7;
erp->er_eep = eep;

9
sys/dev/sfxge/common/efx.h
View File

@ -2016,6 +2016,15 @@ typedef enum efx_rxq_type_e {
*/
#define EFX_RXQ_FLAG_NONE 0x0
#define EFX_RXQ_FLAG_SCATTER 0x1
/*
* If tunnels are supported and Rx event can provide information about
* either outer or inner packet classes (e.g. SFN8xxx adapters with
* full-feature firmware variant running), outer classes are requested by
* default. However, if the driver supports tunnels, the flag allows to
* request inner classes which are required to be able to interpret inner
* Rx checksum offload results.
*/
#define EFX_RXQ_FLAG_INNER_CLASSES 0x2
extern __checkReturn efx_rc_t
efx_rx_qcreate(