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ice: virtchnl rss hena support

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Add support for 2 virtchnl msgs:
VIRTCHNL_OP_SET_RSS_HENA
VIRTCHNL_OP_GET_RSS_HENA_CAPS

The first one allows VFs to clear all previously programmed
RSS configuration and customize it. The second one returns
the RSS HENA bits allowed by the hardware.

Introduce ice_err_to_virt_err which converts kernel
specific errors to virtchnl errors.

Signed-off-by: Md Fahad Iqbal Polash <md.fahad.iqbal.polash@intel.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Md Fahad Iqbal Polash
2022-11-10 14:03:53 +01:00
committed by David S. Miller
parent ab00af85d2
commit e384cf35bf
4 changed files with 139 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/net/ethernet/intel/ice/ice_vf_lib.c
View File

@@ -699,6 +699,30 @@ void ice_dis_vf_qs(struct ice_vf *vf)
ice_set_vf_state_qs_dis(vf);
}
/**
* ice_err_to_virt_err - translate errors for VF return code
* @err: error return code
*/
enum virtchnl_status_code ice_err_to_virt_err(int err)
{
switch (err) {
case 0:
return VIRTCHNL_STATUS_SUCCESS;
case -EINVAL:
case -ENODEV:
return VIRTCHNL_STATUS_ERR_PARAM;
case -ENOMEM:
return VIRTCHNL_STATUS_ERR_NO_MEMORY;
case -EALREADY:
case -EBUSY:
case -EIO:
case -ENOSPC:
return VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR;
default:
return VIRTCHNL_STATUS_ERR_NOT_SUPPORTED;
}
}
/**
* ice_check_vf_init - helper to check if VF init complete
* @vf: the pointer to the VF to check

1
drivers/net/ethernet/intel/ice/ice_vf_lib_private.h
View File

@@ -25,6 +25,7 @@
void ice_dis_vf_qs(struct ice_vf *vf);
int ice_check_vf_init(struct ice_vf *vf);
enum virtchnl_status_code ice_err_to_virt_err(int err);
struct ice_port_info *ice_vf_get_port_info(struct ice_vf *vf);
int ice_vsi_apply_spoofchk(struct ice_vsi *vsi, bool enable);
bool ice_is_vf_trusted(struct ice_vf *vf);

112
drivers/net/ethernet/intel/ice/ice_virtchnl.c
View File

@@ -2481,6 +2481,108 @@ static int ice_vc_dis_vlan_stripping(struct ice_vf *vf)
v_ret, NULL, 0);
}
/**
* ice_vc_get_rss_hena - return the RSS HENA bits allowed by the hardware
* @vf: pointer to the VF info
*/
static int ice_vc_get_rss_hena(struct ice_vf *vf)
{
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct virtchnl_rss_hena *vrh = NULL;
int len = 0, ret;
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) {
dev_err(ice_pf_to_dev(vf->pf), "RSS not supported by PF\n");
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
len = sizeof(struct virtchnl_rss_hena);
vrh = kzalloc(len, GFP_KERNEL);
if (!vrh) {
v_ret = VIRTCHNL_STATUS_ERR_NO_MEMORY;
len = 0;
goto err;
}
vrh->hena = ICE_DEFAULT_RSS_HENA;
err:
/* send the response back to the VF */
ret = ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS, v_ret,
(u8 *)vrh, len);
kfree(vrh);
return ret;
}
/**
* ice_vc_set_rss_hena - set RSS HENA bits for the VF
* @vf: pointer to the VF info
* @msg: pointer to the msg buffer
*/
static int ice_vc_set_rss_hena(struct ice_vf *vf, u8 *msg)
{
struct virtchnl_rss_hena *vrh = (struct virtchnl_rss_hena *)msg;
enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
struct ice_pf *pf = vf->pf;
struct ice_vsi *vsi;
struct device *dev;
int status;
dev = ice_pf_to_dev(pf);
if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
if (!test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
dev_err(dev, "RSS not supported by PF\n");
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
vsi = ice_get_vf_vsi(vf);
if (!vsi) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
goto err;
}
/* clear all previously programmed RSS configuration to allow VF drivers
* the ability to customize the RSS configuration and/or completely
* disable RSS
*/
status = ice_rem_vsi_rss_cfg(&pf->hw, vsi->idx);
if (status && !vrh->hena) {
/* only report failure to clear the current RSS configuration if
* that was clearly the VF's intention (i.e. vrh->hena = 0)
*/
v_ret = ice_err_to_virt_err(status);
goto err;
} else if (status) {
/* allow the VF to update the RSS configuration even on failure
* to clear the current RSS confguration in an attempt to keep
* RSS in a working state
*/
dev_warn(dev, "Failed to clear the RSS configuration for VF %u\n",
vf->vf_id);
}
if (vrh->hena) {
status = ice_add_avf_rss_cfg(&pf->hw, vsi->idx, vrh->hena);
v_ret = ice_err_to_virt_err(status);
}
/* send the response to the VF */
err:
return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA, v_ret,
NULL, 0);
}
/**
* ice_vc_query_rxdid - query RXDID supported by DDP package
* @vf: pointer to VF info
@@ -3572,6 +3674,8 @@ static const struct ice_virtchnl_ops ice_virtchnl_dflt_ops = {
.add_vlan_msg = ice_vc_add_vlan_msg,
.remove_vlan_msg = ice_vc_remove_vlan_msg,
.query_rxdid = ice_vc_query_rxdid,
.get_rss_hena = ice_vc_get_rss_hena,
.set_rss_hena_msg = ice_vc_set_rss_hena,
.ena_vlan_stripping = ice_vc_ena_vlan_stripping,
.dis_vlan_stripping = ice_vc_dis_vlan_stripping,
.handle_rss_cfg_msg = ice_vc_handle_rss_cfg,
@@ -3707,6 +3811,8 @@ static const struct ice_virtchnl_ops ice_virtchnl_repr_ops = {
.add_vlan_msg = ice_vc_add_vlan_msg,
.remove_vlan_msg = ice_vc_remove_vlan_msg,
.query_rxdid = ice_vc_query_rxdid,
.get_rss_hena = ice_vc_get_rss_hena,
.set_rss_hena_msg = ice_vc_set_rss_hena,
.ena_vlan_stripping = ice_vc_ena_vlan_stripping,
.dis_vlan_stripping = ice_vc_dis_vlan_stripping,
.handle_rss_cfg_msg = ice_vc_handle_rss_cfg,
@@ -3850,6 +3956,12 @@ void ice_vc_process_vf_msg(struct ice_pf *pf, struct ice_rq_event_info *event)
case VIRTCHNL_OP_GET_SUPPORTED_RXDIDS:
err = ops->query_rxdid(vf);
break;
case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
err = ops->get_rss_hena(vf);
break;
case VIRTCHNL_OP_SET_RSS_HENA:
err = ops->set_rss_hena_msg(vf, msg);
break;
case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
err = ops->ena_vlan_stripping(vf);
break;

2
drivers/net/ethernet/intel/ice/ice_virtchnl.h
View File

@@ -37,6 +37,8 @@ struct ice_virtchnl_ops {
int (*add_vlan_msg)(struct ice_vf *vf, u8 *msg);
int (*remove_vlan_msg)(struct ice_vf *vf, u8 *msg);
int (*query_rxdid)(struct ice_vf *vf);
int (*get_rss_hena)(struct ice_vf *vf);
int (*set_rss_hena_msg)(struct ice_vf *vf, u8 *msg);
int (*ena_vlan_stripping)(struct ice_vf *vf);
int (*dis_vlan_stripping)(struct ice_vf *vf);
int (*handle_rss_cfg_msg)(struct ice_vf *vf, u8 *msg, bool add);