niansa-misc/linux
1
0
Fork 0
mirror of synced 2025-03-06 20:59:54 +01:00
Code Issues Projects Releases Packages Wiki Activity
linux/drivers/net/ethernet/intel/iavf/iavf_common.c
Alexander Lobakin 306ec721d0 net: intel: introduce {, Intel} Ethernet common library 
Not a secret there's a ton of code duplication between two and more Intel
ethernet modules.

Before introducing new changes, which would need to be copied over again,
start decoupling the already existing duplicate functionality into a new
module, which will be shared between several Intel Ethernet drivers.
Add the lookup table which converts 8/10-bit hardware packet type into
a parsed bitfield structure for easy checking packet format parameters,
such as payload level, IP version, etc. This is currently used by i40e,
ice and iavf and it's all the same in all three drivers.
The only difference introduced in this implementation is that instead of
defining a 256 (or 1024 in case of ice) element array, add unlikely()
condition to limit the input to 154 (current maximum non-reserved packet
type). There's no reason to waste 600 (or even 3600) bytes only to not
hurt very unlikely exception packets.
The hash computation function now takes payload level directly as a
pkt_hash_type. There's a couple cases when non-IP ptypes are marked as
L3 payload and in the previous versions their hash level would be 2, not
3. But skb_set_hash() only sees difference between L4 and non-L4, thus
this won't change anything at all.
The module is behind the hidden Kconfig symbol, which the drivers will
select when needed. The exports are behind 'LIBIE' namespace to limit
the scope of the functions.

Not that non-HW-specific symbols will live in yet another module,
libeth. This is done to easily distinguish pretty generic code ready
for reusing by any other vendor and/or for moving the layer up from
the code useful in Intel's 1-100G drivers only.

Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2024-04-24 11:06:25 -07:00

510 lines
15 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2013 - 2018 Intel Corporation. */
#include <linux/avf/virtchnl.h>
#include <linux/bitfield.h>
#include "iavf_type.h"
#include "iavf_adminq.h"
#include "iavf_prototype.h"
/**
* iavf_aq_str - convert AQ err code to a string
* @hw: pointer to the HW structure
* @aq_err: the AQ error code to convert
**/
const char *iavf_aq_str(struct iavf_hw *hw, enum iavf_admin_queue_err aq_err)
{
switch (aq_err) {
case IAVF_AQ_RC_OK:
return "OK";
case IAVF_AQ_RC_EPERM:
return "IAVF_AQ_RC_EPERM";
case IAVF_AQ_RC_ENOENT:
return "IAVF_AQ_RC_ENOENT";
case IAVF_AQ_RC_ESRCH:
return "IAVF_AQ_RC_ESRCH";
case IAVF_AQ_RC_EINTR:
return "IAVF_AQ_RC_EINTR";
case IAVF_AQ_RC_EIO:
return "IAVF_AQ_RC_EIO";
case IAVF_AQ_RC_ENXIO:
return "IAVF_AQ_RC_ENXIO";
case IAVF_AQ_RC_E2BIG:
return "IAVF_AQ_RC_E2BIG";
case IAVF_AQ_RC_EAGAIN:
return "IAVF_AQ_RC_EAGAIN";
case IAVF_AQ_RC_ENOMEM:
return "IAVF_AQ_RC_ENOMEM";
case IAVF_AQ_RC_EACCES:
return "IAVF_AQ_RC_EACCES";
case IAVF_AQ_RC_EFAULT:
return "IAVF_AQ_RC_EFAULT";
case IAVF_AQ_RC_EBUSY:
return "IAVF_AQ_RC_EBUSY";
case IAVF_AQ_RC_EEXIST:
return "IAVF_AQ_RC_EEXIST";
case IAVF_AQ_RC_EINVAL:
return "IAVF_AQ_RC_EINVAL";
case IAVF_AQ_RC_ENOTTY:
return "IAVF_AQ_RC_ENOTTY";
case IAVF_AQ_RC_ENOSPC:
return "IAVF_AQ_RC_ENOSPC";
case IAVF_AQ_RC_ENOSYS:
return "IAVF_AQ_RC_ENOSYS";
case IAVF_AQ_RC_ERANGE:
return "IAVF_AQ_RC_ERANGE";
case IAVF_AQ_RC_EFLUSHED:
return "IAVF_AQ_RC_EFLUSHED";
case IAVF_AQ_RC_BAD_ADDR:
return "IAVF_AQ_RC_BAD_ADDR";
case IAVF_AQ_RC_EMODE:
return "IAVF_AQ_RC_EMODE";
case IAVF_AQ_RC_EFBIG:
return "IAVF_AQ_RC_EFBIG";
}
snprintf(hw->err_str, sizeof(hw->err_str), "%d", aq_err);
return hw->err_str;
}
/**
* iavf_stat_str - convert status err code to a string
* @hw: pointer to the HW structure
* @stat_err: the status error code to convert
**/
const char *iavf_stat_str(struct iavf_hw *hw, enum iavf_status stat_err)
{
switch (stat_err) {
case 0:
return "OK";
case IAVF_ERR_NVM:
return "IAVF_ERR_NVM";
case IAVF_ERR_NVM_CHECKSUM:
return "IAVF_ERR_NVM_CHECKSUM";
case IAVF_ERR_PHY:
return "IAVF_ERR_PHY";
case IAVF_ERR_CONFIG:
return "IAVF_ERR_CONFIG";
case IAVF_ERR_PARAM:
return "IAVF_ERR_PARAM";
case IAVF_ERR_MAC_TYPE:
return "IAVF_ERR_MAC_TYPE";
case IAVF_ERR_UNKNOWN_PHY:
return "IAVF_ERR_UNKNOWN_PHY";
case IAVF_ERR_LINK_SETUP:
return "IAVF_ERR_LINK_SETUP";
case IAVF_ERR_ADAPTER_STOPPED:
return "IAVF_ERR_ADAPTER_STOPPED";
case IAVF_ERR_INVALID_MAC_ADDR:
return "IAVF_ERR_INVALID_MAC_ADDR";
case IAVF_ERR_DEVICE_NOT_SUPPORTED:
return "IAVF_ERR_DEVICE_NOT_SUPPORTED";
case IAVF_ERR_PRIMARY_REQUESTS_PENDING:
return "IAVF_ERR_PRIMARY_REQUESTS_PENDING";
case IAVF_ERR_INVALID_LINK_SETTINGS:
return "IAVF_ERR_INVALID_LINK_SETTINGS";
case IAVF_ERR_AUTONEG_NOT_COMPLETE:
return "IAVF_ERR_AUTONEG_NOT_COMPLETE";
case IAVF_ERR_RESET_FAILED:
return "IAVF_ERR_RESET_FAILED";
case IAVF_ERR_SWFW_SYNC:
return "IAVF_ERR_SWFW_SYNC";
case IAVF_ERR_NO_AVAILABLE_VSI:
return "IAVF_ERR_NO_AVAILABLE_VSI";
case IAVF_ERR_NO_MEMORY:
return "IAVF_ERR_NO_MEMORY";
case IAVF_ERR_BAD_PTR:
return "IAVF_ERR_BAD_PTR";
case IAVF_ERR_RING_FULL:
return "IAVF_ERR_RING_FULL";
case IAVF_ERR_INVALID_PD_ID:
return "IAVF_ERR_INVALID_PD_ID";
case IAVF_ERR_INVALID_QP_ID:
return "IAVF_ERR_INVALID_QP_ID";
case IAVF_ERR_INVALID_CQ_ID:
return "IAVF_ERR_INVALID_CQ_ID";
case IAVF_ERR_INVALID_CEQ_ID:
return "IAVF_ERR_INVALID_CEQ_ID";
case IAVF_ERR_INVALID_AEQ_ID:
return "IAVF_ERR_INVALID_AEQ_ID";
case IAVF_ERR_INVALID_SIZE:
return "IAVF_ERR_INVALID_SIZE";
case IAVF_ERR_INVALID_ARP_INDEX:
return "IAVF_ERR_INVALID_ARP_INDEX";
case IAVF_ERR_INVALID_FPM_FUNC_ID:
return "IAVF_ERR_INVALID_FPM_FUNC_ID";
case IAVF_ERR_QP_INVALID_MSG_SIZE:
return "IAVF_ERR_QP_INVALID_MSG_SIZE";
case IAVF_ERR_QP_TOOMANY_WRS_POSTED:
return "IAVF_ERR_QP_TOOMANY_WRS_POSTED";
case IAVF_ERR_INVALID_FRAG_COUNT:
return "IAVF_ERR_INVALID_FRAG_COUNT";
case IAVF_ERR_QUEUE_EMPTY:
return "IAVF_ERR_QUEUE_EMPTY";
case IAVF_ERR_INVALID_ALIGNMENT:
return "IAVF_ERR_INVALID_ALIGNMENT";
case IAVF_ERR_FLUSHED_QUEUE:
return "IAVF_ERR_FLUSHED_QUEUE";
case IAVF_ERR_INVALID_PUSH_PAGE_INDEX:
return "IAVF_ERR_INVALID_PUSH_PAGE_INDEX";
case IAVF_ERR_INVALID_IMM_DATA_SIZE:
return "IAVF_ERR_INVALID_IMM_DATA_SIZE";
case IAVF_ERR_TIMEOUT:
return "IAVF_ERR_TIMEOUT";
case IAVF_ERR_OPCODE_MISMATCH:
return "IAVF_ERR_OPCODE_MISMATCH";
case IAVF_ERR_CQP_COMPL_ERROR:
return "IAVF_ERR_CQP_COMPL_ERROR";
case IAVF_ERR_INVALID_VF_ID:
return "IAVF_ERR_INVALID_VF_ID";
case IAVF_ERR_INVALID_HMCFN_ID:
return "IAVF_ERR_INVALID_HMCFN_ID";
case IAVF_ERR_BACKING_PAGE_ERROR:
return "IAVF_ERR_BACKING_PAGE_ERROR";
case IAVF_ERR_NO_PBLCHUNKS_AVAILABLE:
return "IAVF_ERR_NO_PBLCHUNKS_AVAILABLE";
case IAVF_ERR_INVALID_PBLE_INDEX:
return "IAVF_ERR_INVALID_PBLE_INDEX";
case IAVF_ERR_INVALID_SD_INDEX:
return "IAVF_ERR_INVALID_SD_INDEX";
case IAVF_ERR_INVALID_PAGE_DESC_INDEX:
return "IAVF_ERR_INVALID_PAGE_DESC_INDEX";
case IAVF_ERR_INVALID_SD_TYPE:
return "IAVF_ERR_INVALID_SD_TYPE";
case IAVF_ERR_MEMCPY_FAILED:
return "IAVF_ERR_MEMCPY_FAILED";
case IAVF_ERR_INVALID_HMC_OBJ_INDEX:
return "IAVF_ERR_INVALID_HMC_OBJ_INDEX";
case IAVF_ERR_INVALID_HMC_OBJ_COUNT:
return "IAVF_ERR_INVALID_HMC_OBJ_COUNT";
case IAVF_ERR_INVALID_SRQ_ARM_LIMIT:
return "IAVF_ERR_INVALID_SRQ_ARM_LIMIT";
case IAVF_ERR_SRQ_ENABLED:
return "IAVF_ERR_SRQ_ENABLED";
case IAVF_ERR_ADMIN_QUEUE_ERROR:
return "IAVF_ERR_ADMIN_QUEUE_ERROR";
case IAVF_ERR_ADMIN_QUEUE_TIMEOUT:
return "IAVF_ERR_ADMIN_QUEUE_TIMEOUT";
case IAVF_ERR_BUF_TOO_SHORT:
return "IAVF_ERR_BUF_TOO_SHORT";
case IAVF_ERR_ADMIN_QUEUE_FULL:
return "IAVF_ERR_ADMIN_QUEUE_FULL";
case IAVF_ERR_ADMIN_QUEUE_NO_WORK:
return "IAVF_ERR_ADMIN_QUEUE_NO_WORK";
case IAVF_ERR_BAD_RDMA_CQE:
return "IAVF_ERR_BAD_RDMA_CQE";
case IAVF_ERR_NVM_BLANK_MODE:
return "IAVF_ERR_NVM_BLANK_MODE";
case IAVF_ERR_NOT_IMPLEMENTED:
return "IAVF_ERR_NOT_IMPLEMENTED";
case IAVF_ERR_PE_DOORBELL_NOT_ENABLED:
return "IAVF_ERR_PE_DOORBELL_NOT_ENABLED";
case IAVF_ERR_DIAG_TEST_FAILED:
return "IAVF_ERR_DIAG_TEST_FAILED";
case IAVF_ERR_NOT_READY:
return "IAVF_ERR_NOT_READY";
case IAVF_NOT_SUPPORTED:
return "IAVF_NOT_SUPPORTED";
case IAVF_ERR_FIRMWARE_API_VERSION:
return "IAVF_ERR_FIRMWARE_API_VERSION";
case IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR:
return "IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR";
}
snprintf(hw->err_str, sizeof(hw->err_str), "%d", stat_err);
return hw->err_str;
}
/**
* iavf_debug_aq
* @hw: debug mask related to admin queue
* @mask: debug mask
* @desc: pointer to admin queue descriptor
* @buffer: pointer to command buffer
* @buf_len: max length of buffer
*
* Dumps debug log about adminq command with descriptor contents.
**/
void iavf_debug_aq(struct iavf_hw *hw, enum iavf_debug_mask mask, void *desc,
void *buffer, u16 buf_len)
{
struct iavf_aq_desc *aq_desc = (struct iavf_aq_desc *)desc;
u8 *buf = (u8 *)buffer;
if ((!(mask & hw->debug_mask)) || !desc)
return;
iavf_debug(hw, mask,
"AQ CMD: opcode 0x%04X, flags 0x%04X, datalen 0x%04X, retval 0x%04X\n",
le16_to_cpu(aq_desc->opcode),
le16_to_cpu(aq_desc->flags),
le16_to_cpu(aq_desc->datalen),
le16_to_cpu(aq_desc->retval));
iavf_debug(hw, mask, "\tcookie (h,l) 0x%08X 0x%08X\n",
le32_to_cpu(aq_desc->cookie_high),
le32_to_cpu(aq_desc->cookie_low));
iavf_debug(hw, mask, "\tparam (0,1) 0x%08X 0x%08X\n",
le32_to_cpu(aq_desc->params.internal.param0),
le32_to_cpu(aq_desc->params.internal.param1));
iavf_debug(hw, mask, "\taddr (h,l) 0x%08X 0x%08X\n",
le32_to_cpu(aq_desc->params.external.addr_high),
le32_to_cpu(aq_desc->params.external.addr_low));
if (buffer && aq_desc->datalen) {
u16 len = le16_to_cpu(aq_desc->datalen);
iavf_debug(hw, mask, "AQ CMD Buffer:\n");
if (buf_len < len)
len = buf_len;
/* write the full 16-byte chunks */
if (hw->debug_mask & mask) {
char prefix[27];
snprintf(prefix, sizeof(prefix),
"iavf %02x:%02x.%x: \t0x",
hw->bus.bus_id,
hw->bus.device,
hw->bus.func);
print_hex_dump(KERN_INFO, prefix, DUMP_PREFIX_OFFSET,
16, 1, buf, len, false);
}
}
}
/**
* iavf_check_asq_alive
* @hw: pointer to the hw struct
*
* Returns true if Queue is enabled else false.
**/
bool iavf_check_asq_alive(struct iavf_hw *hw)
{
/* Check if the queue is initialized */
if (!hw->aq.asq.count)
return false;
return !!(rd32(hw, IAVF_VF_ATQLEN1) & IAVF_VF_ATQLEN1_ATQENABLE_MASK);
}
/**
* iavf_aq_queue_shutdown
* @hw: pointer to the hw struct
* @unloading: is the driver unloading itself
*
* Tell the Firmware that we're shutting down the AdminQ and whether
* or not the driver is unloading as well.
**/
enum iavf_status iavf_aq_queue_shutdown(struct iavf_hw *hw, bool unloading)
{
struct iavf_aq_desc desc;
struct iavf_aqc_queue_shutdown *cmd =
(struct iavf_aqc_queue_shutdown *)&desc.params.raw;
enum iavf_status status;
iavf_fill_default_direct_cmd_desc(&desc, iavf_aqc_opc_queue_shutdown);
if (unloading)
cmd->driver_unloading = cpu_to_le32(IAVF_AQ_DRIVER_UNLOADING);
status = iavf_asq_send_command(hw, &desc, NULL, 0, NULL);
return status;
}
/**
* iavf_aq_get_set_rss_lut
* @hw: pointer to the hardware structure
* @vsi_id: vsi fw index
* @pf_lut: for PF table set true, for VSI table set false
* @lut: pointer to the lut buffer provided by the caller
* @lut_size: size of the lut buffer
* @set: set true to set the table, false to get the table
*
* Internal function to get or set RSS look up table
**/
static enum iavf_status iavf_aq_get_set_rss_lut(struct iavf_hw *hw,
u16 vsi_id, bool pf_lut,
u8 *lut, u16 lut_size,
bool set)
{
enum iavf_status status;
struct iavf_aq_desc desc;
struct iavf_aqc_get_set_rss_lut *cmd_resp =
(struct iavf_aqc_get_set_rss_lut *)&desc.params.raw;
u16 flags;
if (set)
iavf_fill_default_direct_cmd_desc(&desc,
iavf_aqc_opc_set_rss_lut);
else
iavf_fill_default_direct_cmd_desc(&desc,
iavf_aqc_opc_get_rss_lut);
/* Indirect command */
desc.flags |= cpu_to_le16((u16)IAVF_AQ_FLAG_BUF);
desc.flags |= cpu_to_le16((u16)IAVF_AQ_FLAG_RD);
vsi_id = FIELD_PREP(IAVF_AQC_SET_RSS_LUT_VSI_ID_MASK, vsi_id) |
FIELD_PREP(IAVF_AQC_SET_RSS_LUT_VSI_VALID, 1);
cmd_resp->vsi_id = cpu_to_le16(vsi_id);
if (pf_lut)
flags = FIELD_PREP(IAVF_AQC_SET_RSS_LUT_TABLE_TYPE_MASK,
IAVF_AQC_SET_RSS_LUT_TABLE_TYPE_PF);
else
flags = FIELD_PREP(IAVF_AQC_SET_RSS_LUT_TABLE_TYPE_MASK,
IAVF_AQC_SET_RSS_LUT_TABLE_TYPE_VSI);
cmd_resp->flags = cpu_to_le16(flags);
status = iavf_asq_send_command(hw, &desc, lut, lut_size, NULL);
return status;
}
/**
* iavf_aq_set_rss_lut
* @hw: pointer to the hardware structure
* @vsi_id: vsi fw index
* @pf_lut: for PF table set true, for VSI table set false
* @lut: pointer to the lut buffer provided by the caller
* @lut_size: size of the lut buffer
*
* set the RSS lookup table, PF or VSI type
**/
enum iavf_status iavf_aq_set_rss_lut(struct iavf_hw *hw, u16 vsi_id,
bool pf_lut, u8 *lut, u16 lut_size)
{
return iavf_aq_get_set_rss_lut(hw, vsi_id, pf_lut, lut, lut_size, true);
}
/**
* iavf_aq_get_set_rss_key
* @hw: pointer to the hw struct
* @vsi_id: vsi fw index
* @key: pointer to key info struct
* @set: set true to set the key, false to get the key
*
* get the RSS key per VSI
**/
static enum
iavf_status iavf_aq_get_set_rss_key(struct iavf_hw *hw, u16 vsi_id,
struct iavf_aqc_get_set_rss_key_data *key,
bool set)
{
enum iavf_status status;
struct iavf_aq_desc desc;
struct iavf_aqc_get_set_rss_key *cmd_resp =
(struct iavf_aqc_get_set_rss_key *)&desc.params.raw;
u16 key_size = sizeof(struct iavf_aqc_get_set_rss_key_data);
if (set)
iavf_fill_default_direct_cmd_desc(&desc,
iavf_aqc_opc_set_rss_key);
else
iavf_fill_default_direct_cmd_desc(&desc,
iavf_aqc_opc_get_rss_key);
/* Indirect command */
desc.flags |= cpu_to_le16((u16)IAVF_AQ_FLAG_BUF);
desc.flags |= cpu_to_le16((u16)IAVF_AQ_FLAG_RD);
vsi_id = FIELD_PREP(IAVF_AQC_SET_RSS_KEY_VSI_ID_MASK, vsi_id) |
FIELD_PREP(IAVF_AQC_SET_RSS_KEY_VSI_VALID, 1);
cmd_resp->vsi_id = cpu_to_le16(vsi_id);
status = iavf_asq_send_command(hw, &desc, key, key_size, NULL);
return status;
}
/**
* iavf_aq_set_rss_key
* @hw: pointer to the hw struct
* @vsi_id: vsi fw index
* @key: pointer to key info struct
*
* set the RSS key per VSI
**/
enum iavf_status iavf_aq_set_rss_key(struct iavf_hw *hw, u16 vsi_id,
struct iavf_aqc_get_set_rss_key_data *key)
{
return iavf_aq_get_set_rss_key(hw, vsi_id, key, true);
}
/**
* iavf_aq_send_msg_to_pf
* @hw: pointer to the hardware structure
* @v_opcode: opcodes for VF-PF communication
* @v_retval: return error code
* @msg: pointer to the msg buffer
* @msglen: msg length
* @cmd_details: pointer to command details
*
* Send message to PF driver using admin queue. By default, this message
* is sent asynchronously, i.e. iavf_asq_send_command() does not wait for
* completion before returning.
**/
enum iavf_status iavf_aq_send_msg_to_pf(struct iavf_hw *hw,
enum virtchnl_ops v_opcode,
enum iavf_status v_retval,
u8 *msg, u16 msglen,
struct iavf_asq_cmd_details *cmd_details)
{
struct iavf_asq_cmd_details details;
struct iavf_aq_desc desc;
enum iavf_status status;
iavf_fill_default_direct_cmd_desc(&desc, iavf_aqc_opc_send_msg_to_pf);
desc.flags |= cpu_to_le16((u16)IAVF_AQ_FLAG_SI);
desc.cookie_high = cpu_to_le32(v_opcode);
desc.cookie_low = cpu_to_le32(v_retval);
if (msglen) {
desc.flags |= cpu_to_le16((u16)(IAVF_AQ_FLAG_BUF
| IAVF_AQ_FLAG_RD));
if (msglen > IAVF_AQ_LARGE_BUF)
desc.flags |= cpu_to_le16((u16)IAVF_AQ_FLAG_LB);
desc.datalen = cpu_to_le16(msglen);
}
if (!cmd_details) {
memset(&details, 0, sizeof(details));
details.async = true;
cmd_details = &details;
}
status = iavf_asq_send_command(hw, &desc, msg, msglen, cmd_details);
return status;
}
/**
* iavf_vf_parse_hw_config
* @hw: pointer to the hardware structure
* @msg: pointer to the virtual channel VF resource structure
*
* Given a VF resource message from the PF, populate the hw struct
* with appropriate information.
**/
void iavf_vf_parse_hw_config(struct iavf_hw *hw,
struct virtchnl_vf_resource *msg)
{
struct virtchnl_vsi_resource *vsi_res;
int i;
vsi_res = &msg->vsi_res[0];
hw->dev_caps.num_vsis = msg->num_vsis;
hw->dev_caps.num_rx_qp = msg->num_queue_pairs;
hw->dev_caps.num_tx_qp = msg->num_queue_pairs;
hw->dev_caps.num_msix_vectors_vf = msg->max_vectors;
hw->dev_caps.dcb = msg->vf_cap_flags &
VIRTCHNL_VF_OFFLOAD_L2;
hw->dev_caps.fcoe = 0;
for (i = 0; i < msg->num_vsis; i++) {
if (vsi_res->vsi_type == VIRTCHNL_VSI_SRIOV) {
ether_addr_copy(hw->mac.perm_addr,
vsi_res->default_mac_addr);
ether_addr_copy(hw->mac.addr,
vsi_res->default_mac_addr);
}
vsi_res++;
}
}
Reference in a new issue View git blame Copy permalink