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net/i40e: support PF respond VF request more queues

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This patch respond the VIRTCHNL_OP_REQUEST_QUEUES msg from VF, and
process to allocated more queues for the requested VF. If successful,
PF will notify VF to reset. If unsuccessful, PF will send message to
inform VF.

Signed-off-by: Zhirun Yan <zhirun.yan@intel.com>
Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
This commit is contained in:
Zhirun Yan 2018-12-20 11:01:29 +00:00 committed by Ferruh Yigit
parent c48eb308ed
commit 03d478e960
1 changed files with 68 additions and 0 deletions
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68
drivers/net/i40e/i40e_pf.c
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@ -1218,6 +1218,69 @@ i40e_notify_vf_link_status(struct rte_eth_dev *dev, struct i40e_pf_vf *vf)
I40E_SUCCESS, (uint8_t *)&event, sizeof(event));
}
/**
* i40e_vc_notify_vf_reset
* @vf: pointer to the VF structure
*
* indicate a pending reset to the given VF
**/
static void
i40e_vc_notify_vf_reset(struct i40e_pf_vf *vf)
{
struct i40e_hw *hw = I40E_PF_TO_HW(vf->pf);
struct virtchnl_pf_event pfe;
int abs_vf_id;
uint16_t vf_id = vf->vf_idx;
abs_vf_id = vf_id + hw->func_caps.vf_base_id;
pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT, 0, (u8 *)&pfe,
sizeof(struct virtchnl_pf_event), NULL);
}
static int
i40e_pf_host_process_cmd_request_queues(struct i40e_pf_vf *vf, uint8_t *msg)
{
struct virtchnl_vf_res_request *vfres =
(struct virtchnl_vf_res_request *)msg;
struct i40e_pf *pf;
uint32_t req_pairs = vfres->num_queue_pairs;
uint32_t cur_pairs = vf->vsi->nb_used_qps;
pf = vf->pf;
if (req_pairs <= 0) {
PMD_DRV_LOG(ERR,
"VF %d tried to request %d queues. Ignoring.\n",
vf->vf_idx,
I40E_MAX_QP_NUM_PER_VF);
} else if (req_pairs > I40E_MAX_QP_NUM_PER_VF) {
PMD_DRV_LOG(ERR,
"VF %d tried to request more than %d queues.\n",
vf->vf_idx,
I40E_MAX_QP_NUM_PER_VF);
vfres->num_queue_pairs = I40E_MAX_QP_NUM_PER_VF;
} else if (req_pairs > cur_pairs + pf->qp_pool.num_free) {
PMD_DRV_LOG(ERR,
"VF %d requested %d more queues, but noly %d left\n",
vf->vf_idx,
req_pairs - cur_pairs,
pf->qp_pool.num_free);
vfres->num_queue_pairs = pf->qp_pool.num_free + cur_pairs;
} else {
i40e_vc_notify_vf_reset(vf);
vf->vsi->nb_qps = req_pairs;
pf->vf_nb_qps = req_pairs;
i40e_pf_host_process_cmd_reset_vf(vf);
return 0;
}
return i40e_pf_host_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, 0,
(u8 *)vfres, sizeof(*vfres));
}
void
i40e_pf_host_handle_vf_msg(struct rte_eth_dev *dev,
uint16_t abs_vf_id, uint32_t opcode,
@ -1351,6 +1414,11 @@ i40e_pf_host_handle_vf_msg(struct rte_eth_dev *dev,
PMD_DRV_LOG(INFO, "OP_CONFIG_RSS_KEY received");
i40e_pf_host_process_cmd_set_rss_key(vf, msg, msglen, b_op);
break;
case VIRTCHNL_OP_REQUEST_QUEUES:
PMD_DRV_LOG(INFO, "OP_REQUEST_QUEUES received");
i40e_pf_host_process_cmd_request_queues(vf, msg);
break;
/* Don't add command supported below, which will
* return an error code.
*/