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linux/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c

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/*******************************************************************************
*
* Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
* Copyright(c) 2013 - 2014 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Contact Information:
* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
******************************************************************************/
#include "i40evf.h"
#include "i40e_prototype.h"
/* busy wait delay in msec */
#define I40EVF_BUSY_WAIT_DELAY 10
#define I40EVF_BUSY_WAIT_COUNT 50
/**
* i40evf_send_pf_msg
* @adapter: adapter structure
* @op: virtual channel opcode
* @msg: pointer to message buffer
* @len: message length
*
* Send message to PF and print status if failure.
**/
static int i40evf_send_pf_msg(struct i40evf_adapter *adapter,
enum i40e_virtchnl_ops op, u8 *msg, u16 len)
{
struct i40e_hw *hw = &adapter->hw;
i40e_status err;
if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED)
return 0; /* nothing to see here, move along */
err = i40e_aq_send_msg_to_pf(hw, op, 0, msg, len, NULL);
if (err)
dev_err(&adapter->pdev->dev, "Unable to send opcode %d to PF, error %d, aq status %d\n",
op, err, hw->aq.asq_last_status);
return err;
}
/**
* i40evf_send_api_ver
* @adapter: adapter structure
*
* Send API version admin queue message to the PF. The reply is not checked
* in this function. Returns 0 if the message was successfully
* sent, or one of the I40E_ADMIN_QUEUE_ERROR_ statuses if not.
**/
int i40evf_send_api_ver(struct i40evf_adapter *adapter)
{
struct i40e_virtchnl_version_info vvi;
vvi.major = I40E_VIRTCHNL_VERSION_MAJOR;
vvi.minor = I40E_VIRTCHNL_VERSION_MINOR;
return i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_VERSION, (u8 *)&vvi,
sizeof(vvi));
}
/**
* i40evf_verify_api_ver
* @adapter: adapter structure
*
* Compare API versions with the PF. Must be called after admin queue is
* initialized. Returns 0 if API versions match, -EIO if they do not,
* I40E_ERR_ADMIN_QUEUE_NO_WORK if the admin queue is empty, and any errors
* from the firmware are propagated.
**/
int i40evf_verify_api_ver(struct i40evf_adapter *adapter)
{
struct i40e_virtchnl_version_info *pf_vvi;
struct i40e_hw *hw = &adapter->hw;
struct i40e_arq_event_info event;
enum i40e_virtchnl_ops op;
i40e_status err;
event.msg_size = I40EVF_MAX_AQ_BUF_SIZE;
event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
if (!event.msg_buf) {
err = -ENOMEM;
goto out;
}
while (1) {
err = i40evf_clean_arq_element(hw, &event, NULL);
/* When the AQ is empty, i40evf_clean_arq_element will return
* nonzero and this loop will terminate.
*/
if (err)
goto out_alloc;
op =
(enum i40e_virtchnl_ops)le32_to_cpu(event.desc.cookie_high);
if (op == I40E_VIRTCHNL_OP_VERSION)
break;
}
err = (i40e_status)le32_to_cpu(event.desc.cookie_low);
if (err)
goto out_alloc;
if (op != I40E_VIRTCHNL_OP_VERSION) {
dev_info(&adapter->pdev->dev, "Invalid reply type %d from PF\n",
op);
err = -EIO;
goto out_alloc;
}
pf_vvi = (struct i40e_virtchnl_version_info *)event.msg_buf;
if ((pf_vvi->major != I40E_VIRTCHNL_VERSION_MAJOR) ||
(pf_vvi->minor != I40E_VIRTCHNL_VERSION_MINOR))
err = -EIO;
out_alloc:
kfree(event.msg_buf);
out:
return err;
}
/**
* i40evf_send_vf_config_msg
* @adapter: adapter structure
*
* Send VF configuration request admin queue message to the PF. The reply
* is not checked in this function. Returns 0 if the message was
* successfully sent, or one of the I40E_ADMIN_QUEUE_ERROR_ statuses if not.
**/
int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter)
{
return i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
NULL, 0);
}
/**
* i40evf_get_vf_config
* @hw: pointer to the hardware structure
* @len: length of buffer
*
* Get VF configuration from PF and populate hw structure. Must be called after
* admin queue is initialized. Busy waits until response is received from PF,
* with maximum timeout. Response from PF is returned in the buffer for further
* processing by the caller.
**/
int i40evf_get_vf_config(struct i40evf_adapter *adapter)
{
struct i40e_hw *hw = &adapter->hw;
struct i40e_arq_event_info event;
enum i40e_virtchnl_ops op;
i40e_status err;
u16 len;
len = sizeof(struct i40e_virtchnl_vf_resource) +
I40E_MAX_VF_VSI * sizeof(struct i40e_virtchnl_vsi_resource);
event.msg_size = len;
event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
if (!event.msg_buf) {
err = -ENOMEM;
goto out;
}
while (1) {
event.msg_size = len;
/* When the AQ is empty, i40evf_clean_arq_element will return
* nonzero and this loop will terminate.
*/
err = i40evf_clean_arq_element(hw, &event, NULL);
if (err)
goto out_alloc;
op =
(enum i40e_virtchnl_ops)le32_to_cpu(event.desc.cookie_high);
if (op == I40E_VIRTCHNL_OP_GET_VF_RESOURCES)
break;
}
err = (i40e_status)le32_to_cpu(event.desc.cookie_low);
memcpy(adapter->vf_res, event.msg_buf, min(event.msg_size, len));
i40e_vf_parse_hw_config(hw, adapter->vf_res);
out_alloc:
kfree(event.msg_buf);
out:
return err;
}
/**
* i40evf_configure_queues
* @adapter: adapter structure
*
* Request that the PF set up our (previously allocated) queues.
**/
void i40evf_configure_queues(struct i40evf_adapter *adapter)
{
struct i40e_virtchnl_vsi_queue_config_info *vqci;
struct i40e_virtchnl_queue_pair_info *vqpi;
int pairs = adapter->num_active_queues;
int i, len;
if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
/* bail because we already have a command pending */
dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
__func__, adapter->current_op);
return;
}
adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES;
len = sizeof(struct i40e_virtchnl_vsi_queue_config_info) +
(sizeof(struct i40e_virtchnl_queue_pair_info) * pairs);
vqci = kzalloc(len, GFP_ATOMIC);
if (!vqci)
return;
vqci->vsi_id = adapter->vsi_res->vsi_id;
vqci->num_queue_pairs = pairs;
vqpi = vqci->qpair;
/* Size check is not needed here - HW max is 16 queue pairs, and we
* can fit info for 31 of them into the AQ buffer before it overflows.
*/
for (i = 0; i < pairs; i++) {
vqpi->txq.vsi_id = vqci->vsi_id;
vqpi->txq.queue_id = i;
vqpi->txq.ring_len = adapter->tx_rings[i]->count;
vqpi->txq.dma_ring_addr = adapter->tx_rings[i]->dma;
vqpi->txq.headwb_enabled = 1;
vqpi->txq.dma_headwb_addr = vqpi->txq.dma_ring_addr +
(vqpi->txq.ring_len * sizeof(struct i40e_tx_desc));
vqpi->rxq.vsi_id = vqci->vsi_id;
vqpi->rxq.queue_id = i;
vqpi->rxq.ring_len = adapter->rx_rings[i]->count;
vqpi->rxq.dma_ring_addr = adapter->rx_rings[i]->dma;
vqpi->rxq.max_pkt_size = adapter->netdev->mtu
+ ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
vqpi->rxq.databuffer_size = adapter->rx_rings[i]->rx_buf_len;
vqpi++;
}
adapter->aq_pending |= I40EVF_FLAG_AQ_CONFIGURE_QUEUES;
adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_QUEUES;
i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES,
(u8 *)vqci, len);
kfree(vqci);
}
/**
* i40evf_enable_queues
* @adapter: adapter structure
*
* Request that the PF enable all of our queues.
**/
void i40evf_enable_queues(struct i40evf_adapter *adapter)
{
struct i40e_virtchnl_queue_select vqs;
if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
/* bail because we already have a command pending */
dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
__func__, adapter->current_op);
return;
}
adapter->current_op = I40E_VIRTCHNL_OP_ENABLE_QUEUES;
vqs.vsi_id = adapter->vsi_res->vsi_id;
vqs.tx_queues = (1 << adapter->num_active_queues) - 1;
vqs.rx_queues = vqs.tx_queues;
adapter->aq_pending |= I40EVF_FLAG_AQ_ENABLE_QUEUES;
adapter->aq_required &= ~I40EVF_FLAG_AQ_ENABLE_QUEUES;
i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ENABLE_QUEUES,
(u8 *)&vqs, sizeof(vqs));
}
/**
* i40evf_disable_queues
* @adapter: adapter structure
*
* Request that the PF disable all of our queues.
**/
void i40evf_disable_queues(struct i40evf_adapter *adapter)
{
struct i40e_virtchnl_queue_select vqs;
if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
/* bail because we already have a command pending */
dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
__func__, adapter->current_op);
return;
}
adapter->current_op = I40E_VIRTCHNL_OP_DISABLE_QUEUES;
vqs.vsi_id = adapter->vsi_res->vsi_id;
vqs.tx_queues = (1 << adapter->num_active_queues) - 1;
vqs.rx_queues = vqs.tx_queues;
adapter->aq_pending |= I40EVF_FLAG_AQ_DISABLE_QUEUES;
adapter->aq_required &= ~I40EVF_FLAG_AQ_DISABLE_QUEUES;
i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DISABLE_QUEUES,
(u8 *)&vqs, sizeof(vqs));
}
/**
* i40evf_map_queues
* @adapter: adapter structure
*
* Request that the PF map queues to interrupt vectors. Misc causes, including
* admin queue, are always mapped to vector 0.
**/
void i40evf_map_queues(struct i40evf_adapter *adapter)
{
struct i40e_virtchnl_irq_map_info *vimi;
int v_idx, q_vectors, len;
struct i40e_q_vector *q_vector;
if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
/* bail because we already have a command pending */
dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
__func__, adapter->current_op);
return;
}
adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP;
q_vectors = adapter->num_msix_vectors - NONQ_VECS;
len = sizeof(struct i40e_virtchnl_irq_map_info) +
(adapter->num_msix_vectors *
sizeof(struct i40e_virtchnl_vector_map));
vimi = kzalloc(len, GFP_ATOMIC);
if (!vimi)
return;
vimi->num_vectors = adapter->num_msix_vectors;
/* Queue vectors first */
for (v_idx = 0; v_idx < q_vectors; v_idx++) {
q_vector = adapter->q_vector[v_idx];
vimi->vecmap[v_idx].vsi_id = adapter->vsi_res->vsi_id;
vimi->vecmap[v_idx].vector_id = v_idx + NONQ_VECS;
vimi->vecmap[v_idx].txq_map = q_vector->ring_mask;
vimi->vecmap[v_idx].rxq_map = q_vector->ring_mask;
}
/* Misc vector last - this is only for AdminQ messages */
vimi->vecmap[v_idx].vsi_id = adapter->vsi_res->vsi_id;
vimi->vecmap[v_idx].vector_id = 0;
vimi->vecmap[v_idx].txq_map = 0;
vimi->vecmap[v_idx].rxq_map = 0;
adapter->aq_pending |= I40EVF_FLAG_AQ_MAP_VECTORS;
adapter->aq_required &= ~I40EVF_FLAG_AQ_MAP_VECTORS;
i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP,
(u8 *)vimi, len);
kfree(vimi);
}
/**
* i40evf_add_ether_addrs
* @adapter: adapter structure
* @addrs: the MAC address filters to add (contiguous)
* @count: number of filters
*
* Request that the PF add one or more addresses to our filters.
**/
void i40evf_add_ether_addrs(struct i40evf_adapter *adapter)
{
struct i40e_virtchnl_ether_addr_list *veal;
int len, i = 0, count = 0;
struct i40evf_mac_filter *f;
if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
/* bail because we already have a command pending */
dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
__func__, adapter->current_op);
return;
}
list_for_each_entry(f, &adapter->mac_filter_list, list) {
if (f->add)
count++;
}
if (!count) {
adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_MAC_FILTER;
return;
}
adapter->current_op = I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS;
len = sizeof(struct i40e_virtchnl_ether_addr_list) +
(count * sizeof(struct i40e_virtchnl_ether_addr));
if (len > I40EVF_MAX_AQ_BUF_SIZE) {
dev_warn(&adapter->pdev->dev, "%s: Too many MAC address changes in one request\n",
__func__);
count = (I40EVF_MAX_AQ_BUF_SIZE -
sizeof(struct i40e_virtchnl_ether_addr_list)) /
sizeof(struct i40e_virtchnl_ether_addr);
len = I40EVF_MAX_AQ_BUF_SIZE;
}
veal = kzalloc(len, GFP_ATOMIC);
if (!veal)
return;
veal->vsi_id = adapter->vsi_res->vsi_id;
veal->num_elements = count;
list_for_each_entry(f, &adapter->mac_filter_list, list) {
if (f->add) {
ether_addr_copy(veal->list[i].addr, f->macaddr);
i++;
f->add = false;
}
}
adapter->aq_pending |= I40EVF_FLAG_AQ_ADD_MAC_FILTER;
adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_MAC_FILTER;
i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS,
(u8 *)veal, len);
kfree(veal);
}
/**
* i40evf_del_ether_addrs
* @adapter: adapter structure
* @addrs: the MAC address filters to remove (contiguous)
* @count: number of filtes
*
* Request that the PF remove one or more addresses from our filters.
**/
void i40evf_del_ether_addrs(struct i40evf_adapter *adapter)
{
struct i40e_virtchnl_ether_addr_list *veal;
struct i40evf_mac_filter *f, *ftmp;
int len, i = 0, count = 0;
if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
/* bail because we already have a command pending */
dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
__func__, adapter->current_op);
return;
}
list_for_each_entry(f, &adapter->mac_filter_list, list) {
if (f->remove)
count++;
}
if (!count) {
adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_MAC_FILTER;
return;
}
adapter->current_op = I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS;
len = sizeof(struct i40e_virtchnl_ether_addr_list) +
(count * sizeof(struct i40e_virtchnl_ether_addr));
if (len > I40EVF_MAX_AQ_BUF_SIZE) {
dev_warn(&adapter->pdev->dev, "%s: Too many MAC address changes in one request\n",
__func__);
count = (I40EVF_MAX_AQ_BUF_SIZE -
sizeof(struct i40e_virtchnl_ether_addr_list)) /
sizeof(struct i40e_virtchnl_ether_addr);
len = I40EVF_MAX_AQ_BUF_SIZE;
}
veal = kzalloc(len, GFP_ATOMIC);
if (!veal)
return;
veal->vsi_id = adapter->vsi_res->vsi_id;
veal->num_elements = count;
list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
if (f->remove) {
ether_addr_copy(veal->list[i].addr, f->macaddr);
i++;
list_del(&f->list);
kfree(f);
}
}
adapter->aq_pending |= I40EVF_FLAG_AQ_DEL_MAC_FILTER;
adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_MAC_FILTER;
i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS,
(u8 *)veal, len);
kfree(veal);
}
/**
* i40evf_add_vlans
* @adapter: adapter structure
* @vlans: the VLANs to add
* @count: number of VLANs
*
* Request that the PF add one or more VLAN filters to our VSI.
**/
void i40evf_add_vlans(struct i40evf_adapter *adapter)
{
struct i40e_virtchnl_vlan_filter_list *vvfl;
int len, i = 0, count = 0;
struct i40evf_vlan_filter *f;
if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
/* bail because we already have a command pending */
dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
__func__, adapter->current_op);
return;
}
list_for_each_entry(f, &adapter->vlan_filter_list, list) {
if (f->add)
count++;
}
if (!count) {
adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
return;
}
adapter->current_op = I40E_VIRTCHNL_OP_ADD_VLAN;
len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
(count * sizeof(u16));
if (len > I40EVF_MAX_AQ_BUF_SIZE) {
dev_warn(&adapter->pdev->dev, "%s: Too many VLAN changes in one request\n",
__func__);
count = (I40EVF_MAX_AQ_BUF_SIZE -
sizeof(struct i40e_virtchnl_vlan_filter_list)) /
sizeof(u16);
len = I40EVF_MAX_AQ_BUF_SIZE;
}
vvfl = kzalloc(len, GFP_ATOMIC);
if (!vvfl)
return;
vvfl->vsi_id = adapter->vsi_res->vsi_id;
vvfl->num_elements = count;
list_for_each_entry(f, &adapter->vlan_filter_list, list) {
if (f->add) {
vvfl->vlan_id[i] = f->vlan;
i++;
f->add = false;
}
}
adapter->aq_pending |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
adapter->aq_required &= ~I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_ADD_VLAN, (u8 *)vvfl, len);
kfree(vvfl);
}
/**
* i40evf_del_vlans
* @adapter: adapter structure
* @vlans: the VLANs to remove
* @count: number of VLANs
*
* Request that the PF remove one or more VLAN filters from our VSI.
**/
void i40evf_del_vlans(struct i40evf_adapter *adapter)
{
struct i40e_virtchnl_vlan_filter_list *vvfl;
struct i40evf_vlan_filter *f, *ftmp;
int len, i = 0, count = 0;
if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
/* bail because we already have a command pending */
dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
__func__, adapter->current_op);
return;
}
list_for_each_entry(f, &adapter->vlan_filter_list, list) {
if (f->remove)
count++;
}
if (!count) {
adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
return;
}
adapter->current_op = I40E_VIRTCHNL_OP_DEL_VLAN;
len = sizeof(struct i40e_virtchnl_vlan_filter_list) +
(count * sizeof(u16));
if (len > I40EVF_MAX_AQ_BUF_SIZE) {
dev_warn(&adapter->pdev->dev, "%s: Too many VLAN changes in one request\n",
__func__);
count = (I40EVF_MAX_AQ_BUF_SIZE -
sizeof(struct i40e_virtchnl_vlan_filter_list)) /
sizeof(u16);
len = I40EVF_MAX_AQ_BUF_SIZE;
}
vvfl = kzalloc(len, GFP_ATOMIC);
if (!vvfl)
return;
vvfl->vsi_id = adapter->vsi_res->vsi_id;
vvfl->num_elements = count;
list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
if (f->remove) {
vvfl->vlan_id[i] = f->vlan;
i++;
list_del(&f->list);
kfree(f);
}
}
adapter->aq_pending |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
adapter->aq_required &= ~I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_DEL_VLAN, (u8 *)vvfl, len);
kfree(vvfl);
}
/**
* i40evf_set_promiscuous
* @adapter: adapter structure
* @flags: bitmask to control unicast/multicast promiscuous.
*
* Request that the PF enable promiscuous mode for our VSI.
**/
void i40evf_set_promiscuous(struct i40evf_adapter *adapter, int flags)
{
struct i40e_virtchnl_promisc_info vpi;
if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
/* bail because we already have a command pending */
dev_err(&adapter->pdev->dev, "%s: command %d pending\n",
__func__, adapter->current_op);
return;
}
adapter->current_op = I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE;
vpi.vsi_id = adapter->vsi_res->vsi_id;
vpi.flags = flags;
i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
(u8 *)&vpi, sizeof(vpi));
}
/**
* i40evf_request_stats
* @adapter: adapter structure
*
* Request VSI statistics from PF.
**/
void i40evf_request_stats(struct i40evf_adapter *adapter)
{
struct i40e_virtchnl_queue_select vqs;
if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
/* no error message, this isn't crucial */
return;
}
adapter->current_op = I40E_VIRTCHNL_OP_GET_STATS;
vqs.vsi_id = adapter->vsi_res->vsi_id;
/* queue maps are ignored for this message - only the vsi is used */
if (i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_GET_STATS,
(u8 *)&vqs, sizeof(vqs)))
/* if the request failed, don't lock out others */
adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
}
/**
* i40evf_request_reset
* @adapter: adapter structure
*
* Request that the PF reset this VF. No response is expected.
**/
void i40evf_request_reset(struct i40evf_adapter *adapter)
{
/* Don't check CURRENT_OP - this is always higher priority */
i40evf_send_pf_msg(adapter, I40E_VIRTCHNL_OP_RESET_VF, NULL, 0);
adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
}
/**
* i40evf_virtchnl_completion
* @adapter: adapter structure
* @v_opcode: opcode sent by PF
* @v_retval: retval sent by PF
* @msg: message sent by PF
* @msglen: message length
*
* Asynchronous completion function for admin queue messages. Rather than busy
* wait, we fire off our requests and assume that no errors will be returned.
* This function handles the reply messages.
**/
void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
enum i40e_virtchnl_ops v_opcode,
i40e_status v_retval,
u8 *msg, u16 msglen)
{
struct net_device *netdev = adapter->netdev;
if (v_opcode == I40E_VIRTCHNL_OP_EVENT) {
struct i40e_virtchnl_pf_event *vpe =
(struct i40e_virtchnl_pf_event *)msg;
switch (vpe->event) {
case I40E_VIRTCHNL_EVENT_LINK_CHANGE:
adapter->link_up =
vpe->event_data.link_event.link_status;
if (adapter->link_up && !netif_carrier_ok(netdev)) {
dev_info(&adapter->pdev->dev, "NIC Link is Up\n");
netif_carrier_on(netdev);
netif_tx_wake_all_queues(netdev);
} else if (!adapter->link_up) {
dev_info(&adapter->pdev->dev, "NIC Link is Down\n");
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
}
break;
case I40E_VIRTCHNL_EVENT_RESET_IMPENDING:
dev_info(&adapter->pdev->dev, "PF reset warning received\n");
if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING)) {
adapter->flags |= I40EVF_FLAG_RESET_PENDING;
dev_info(&adapter->pdev->dev, "Scheduling reset task\n");
schedule_work(&adapter->reset_task);
}
break;
default:
dev_err(&adapter->pdev->dev,
"%s: Unknown event %d from pf\n",
__func__, vpe->event);
break;
}
return;
}
if (v_opcode != adapter->current_op) {
dev_err(&adapter->pdev->dev, "%s: Pending op is %d, received %d\n",
__func__, adapter->current_op, v_opcode);
/* We're probably completely screwed at this point, but clear
* the current op and try to carry on....
*/
adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
return;
}
if (v_retval) {
dev_err(&adapter->pdev->dev, "%s: PF returned error %d to our request %d\n",
__func__, v_retval, v_opcode);
}
switch (v_opcode) {
case I40E_VIRTCHNL_OP_GET_STATS: {
struct i40e_eth_stats *stats =
(struct i40e_eth_stats *)msg;
adapter->net_stats.rx_packets = stats->rx_unicast +
stats->rx_multicast +
stats->rx_broadcast;
adapter->net_stats.tx_packets = stats->tx_unicast +
stats->tx_multicast +
stats->tx_broadcast;
adapter->net_stats.rx_bytes = stats->rx_bytes;
adapter->net_stats.tx_bytes = stats->tx_bytes;
adapter->net_stats.tx_errors = stats->tx_errors;
adapter->net_stats.rx_dropped = stats->rx_discards;
adapter->net_stats.tx_dropped = stats->tx_discards;
adapter->current_stats = *stats;
}
break;
case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
adapter->aq_pending &= ~(I40EVF_FLAG_AQ_ADD_MAC_FILTER);
break;
case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
adapter->aq_pending &= ~(I40EVF_FLAG_AQ_DEL_MAC_FILTER);
break;
case I40E_VIRTCHNL_OP_ADD_VLAN:
adapter->aq_pending &= ~(I40EVF_FLAG_AQ_ADD_VLAN_FILTER);
break;
case I40E_VIRTCHNL_OP_DEL_VLAN:
adapter->aq_pending &= ~(I40EVF_FLAG_AQ_DEL_VLAN_FILTER);
break;
case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
adapter->aq_pending &= ~(I40EVF_FLAG_AQ_ENABLE_QUEUES);
/* enable transmits */
i40evf_irq_enable(adapter, true);
netif_tx_start_all_queues(adapter->netdev);
netif_carrier_on(adapter->netdev);
break;
case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
adapter->aq_pending &= ~(I40EVF_FLAG_AQ_DISABLE_QUEUES);
break;
case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
adapter->aq_pending &= ~(I40EVF_FLAG_AQ_CONFIGURE_QUEUES);
break;
case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
adapter->aq_pending &= ~(I40EVF_FLAG_AQ_MAP_VECTORS);
break;
default:
dev_warn(&adapter->pdev->dev, "%s: Received unexpected message %d from PF\n",
__func__, v_opcode);
break;
} /* switch v_opcode */
adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
}
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