forked from Minki/linux
4d9b604353
Currently if the firmware reports DCB capability the driver enables I40E_FLAG_DCB_ENABLED flag. When this flag is enabled the driver inserts a tag when transmitting a packet from the port even if there are no DCB traffic classes configured at the port. This patch adds a new flag I40E_FLAG_DCB_CAPABLE that will be set when the DCB capability is present and the existing flag I40E_FLAG_DCB_ENABLED will be set only if there are more than one traffic classes configured at the port. Change-ID: I24ccbf53ef293db2eba80c8a9772acf729795bd5 Signed-off-by: Neerav Parikh <neerav.parikh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
317 lines
8.4 KiB
C
317 lines
8.4 KiB
C
/*******************************************************************************
|
|
*
|
|
* Intel Ethernet Controller XL710 Family Linux 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
|
|
*
|
|
******************************************************************************/
|
|
|
|
#ifdef CONFIG_I40E_DCB
|
|
#include "i40e.h"
|
|
#include <net/dcbnl.h>
|
|
|
|
/**
|
|
* i40e_get_pfc_delay - retrieve PFC Link Delay
|
|
* @hw: pointer to hardware struct
|
|
* @delay: holds the PFC Link delay value
|
|
*
|
|
* Returns PFC Link Delay from the PRTDCB_GENC.PFCLDA
|
|
**/
|
|
static void i40e_get_pfc_delay(struct i40e_hw *hw, u16 *delay)
|
|
{
|
|
u32 val;
|
|
|
|
val = rd32(hw, I40E_PRTDCB_GENC);
|
|
*delay = (u16)(val & I40E_PRTDCB_GENC_PFCLDA_MASK >>
|
|
I40E_PRTDCB_GENC_PFCLDA_SHIFT);
|
|
}
|
|
|
|
/**
|
|
* i40e_dcbnl_ieee_getets - retrieve local IEEE ETS configuration
|
|
* @netdev: the corresponding netdev
|
|
* @ets: structure to hold the ETS information
|
|
*
|
|
* Returns local IEEE ETS configuration
|
|
**/
|
|
static int i40e_dcbnl_ieee_getets(struct net_device *dev,
|
|
struct ieee_ets *ets)
|
|
{
|
|
struct i40e_pf *pf = i40e_netdev_to_pf(dev);
|
|
struct i40e_dcbx_config *dcbxcfg;
|
|
struct i40e_hw *hw = &pf->hw;
|
|
|
|
if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
|
|
return -EINVAL;
|
|
|
|
dcbxcfg = &hw->local_dcbx_config;
|
|
ets->willing = dcbxcfg->etscfg.willing;
|
|
ets->ets_cap = dcbxcfg->etscfg.maxtcs;
|
|
ets->cbs = dcbxcfg->etscfg.cbs;
|
|
memcpy(ets->tc_tx_bw, dcbxcfg->etscfg.tcbwtable,
|
|
sizeof(ets->tc_tx_bw));
|
|
memcpy(ets->tc_rx_bw, dcbxcfg->etscfg.tcbwtable,
|
|
sizeof(ets->tc_rx_bw));
|
|
memcpy(ets->tc_tsa, dcbxcfg->etscfg.tsatable,
|
|
sizeof(ets->tc_tsa));
|
|
memcpy(ets->prio_tc, dcbxcfg->etscfg.prioritytable,
|
|
sizeof(ets->prio_tc));
|
|
memcpy(ets->tc_reco_bw, dcbxcfg->etsrec.tcbwtable,
|
|
sizeof(ets->tc_reco_bw));
|
|
memcpy(ets->tc_reco_tsa, dcbxcfg->etsrec.tsatable,
|
|
sizeof(ets->tc_reco_tsa));
|
|
memcpy(ets->reco_prio_tc, dcbxcfg->etscfg.prioritytable,
|
|
sizeof(ets->reco_prio_tc));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* i40e_dcbnl_ieee_getpfc - retrieve local IEEE PFC configuration
|
|
* @netdev: the corresponding netdev
|
|
* @ets: structure to hold the PFC information
|
|
*
|
|
* Returns local IEEE PFC configuration
|
|
**/
|
|
static int i40e_dcbnl_ieee_getpfc(struct net_device *dev,
|
|
struct ieee_pfc *pfc)
|
|
{
|
|
struct i40e_pf *pf = i40e_netdev_to_pf(dev);
|
|
struct i40e_dcbx_config *dcbxcfg;
|
|
struct i40e_hw *hw = &pf->hw;
|
|
int i;
|
|
|
|
if (!(pf->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
|
|
return -EINVAL;
|
|
|
|
dcbxcfg = &hw->local_dcbx_config;
|
|
pfc->pfc_cap = dcbxcfg->pfc.pfccap;
|
|
pfc->pfc_en = dcbxcfg->pfc.pfcenable;
|
|
pfc->mbc = dcbxcfg->pfc.mbc;
|
|
i40e_get_pfc_delay(hw, &pfc->delay);
|
|
|
|
/* Get Requests/Indicatiosn */
|
|
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
|
|
pfc->requests[i] = pf->stats.priority_xoff_tx[i];
|
|
pfc->indications[i] = pf->stats.priority_xoff_rx[i];
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* i40e_dcbnl_getdcbx - retrieve current DCBx capability
|
|
* @netdev: the corresponding netdev
|
|
*
|
|
* Returns DCBx capability features
|
|
**/
|
|
static u8 i40e_dcbnl_getdcbx(struct net_device *dev)
|
|
{
|
|
struct i40e_pf *pf = i40e_netdev_to_pf(dev);
|
|
|
|
return pf->dcbx_cap;
|
|
}
|
|
|
|
/**
|
|
* i40e_dcbnl_get_perm_hw_addr - MAC address used by DCBx
|
|
* @netdev: the corresponding netdev
|
|
*
|
|
* Returns the SAN MAC address used for LLDP exchange
|
|
**/
|
|
static void i40e_dcbnl_get_perm_hw_addr(struct net_device *dev,
|
|
u8 *perm_addr)
|
|
{
|
|
struct i40e_pf *pf = i40e_netdev_to_pf(dev);
|
|
int i, j;
|
|
|
|
memset(perm_addr, 0xff, MAX_ADDR_LEN);
|
|
|
|
for (i = 0; i < dev->addr_len; i++)
|
|
perm_addr[i] = pf->hw.mac.perm_addr[i];
|
|
|
|
for (j = 0; j < dev->addr_len; j++, i++)
|
|
perm_addr[i] = pf->hw.mac.san_addr[j];
|
|
}
|
|
|
|
static const struct dcbnl_rtnl_ops dcbnl_ops = {
|
|
.ieee_getets = i40e_dcbnl_ieee_getets,
|
|
.ieee_getpfc = i40e_dcbnl_ieee_getpfc,
|
|
.getdcbx = i40e_dcbnl_getdcbx,
|
|
.getpermhwaddr = i40e_dcbnl_get_perm_hw_addr,
|
|
};
|
|
|
|
/**
|
|
* i40e_dcbnl_set_all - set all the apps and ieee data from DCBx config
|
|
* @vsi: the corresponding vsi
|
|
*
|
|
* Set up all the IEEE APPs in the DCBNL App Table and generate event for
|
|
* other settings
|
|
**/
|
|
void i40e_dcbnl_set_all(struct i40e_vsi *vsi)
|
|
{
|
|
struct net_device *dev = vsi->netdev;
|
|
struct i40e_pf *pf = i40e_netdev_to_pf(dev);
|
|
struct i40e_dcbx_config *dcbxcfg;
|
|
struct i40e_hw *hw = &pf->hw;
|
|
struct dcb_app sapp;
|
|
u8 prio, tc_map;
|
|
int i;
|
|
|
|
/* DCB not enabled */
|
|
if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
|
|
return;
|
|
|
|
dcbxcfg = &hw->local_dcbx_config;
|
|
|
|
/* Set up all the App TLVs if DCBx is negotiated */
|
|
for (i = 0; i < dcbxcfg->numapps; i++) {
|
|
prio = dcbxcfg->app[i].priority;
|
|
tc_map = (1 << dcbxcfg->etscfg.prioritytable[prio]);
|
|
|
|
/* Add APP only if the TC is enabled for this VSI */
|
|
if (tc_map & vsi->tc_config.enabled_tc) {
|
|
sapp.selector = dcbxcfg->app[i].selector;
|
|
sapp.protocol = dcbxcfg->app[i].protocolid;
|
|
sapp.priority = prio;
|
|
dcb_ieee_setapp(dev, &sapp);
|
|
}
|
|
}
|
|
|
|
/* Notify user-space of the changes */
|
|
dcbnl_ieee_notify(dev, RTM_SETDCB, DCB_CMD_IEEE_SET, 0, 0);
|
|
}
|
|
|
|
/**
|
|
* i40e_dcbnl_vsi_del_app - Delete APP for given VSI
|
|
* @vsi: the corresponding vsi
|
|
* @app: APP to delete
|
|
*
|
|
* Delete given APP from the DCBNL APP table for given
|
|
* VSI
|
|
**/
|
|
static int i40e_dcbnl_vsi_del_app(struct i40e_vsi *vsi,
|
|
struct i40e_ieee_app_priority_table *app)
|
|
{
|
|
struct net_device *dev = vsi->netdev;
|
|
struct dcb_app sapp;
|
|
|
|
if (!dev)
|
|
return -EINVAL;
|
|
|
|
sapp.selector = app->selector;
|
|
sapp.protocol = app->protocolid;
|
|
sapp.priority = app->priority;
|
|
return dcb_ieee_delapp(dev, &sapp);
|
|
}
|
|
|
|
/**
|
|
* i40e_dcbnl_del_app - Delete APP on all VSIs
|
|
* @pf: the corresponding pf
|
|
* @app: APP to delete
|
|
*
|
|
* Delete given APP from all the VSIs for given PF
|
|
**/
|
|
static void i40e_dcbnl_del_app(struct i40e_pf *pf,
|
|
struct i40e_ieee_app_priority_table *app)
|
|
{
|
|
int v, err;
|
|
for (v = 0; v < pf->num_alloc_vsi; v++) {
|
|
if (pf->vsi[v] && pf->vsi[v]->netdev) {
|
|
err = i40e_dcbnl_vsi_del_app(pf->vsi[v], app);
|
|
if (err)
|
|
dev_info(&pf->pdev->dev, "%s: Failed deleting app for VSI seid=%d err=%d sel=%d proto=0x%x prio=%d\n",
|
|
__func__, pf->vsi[v]->seid,
|
|
err, app->selector,
|
|
app->protocolid, app->priority);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40e_dcbnl_find_app - Search APP in given DCB config
|
|
* @cfg: DCBX configuration data
|
|
* @app: APP to search for
|
|
*
|
|
* Find given APP in the DCB configuration
|
|
**/
|
|
static bool i40e_dcbnl_find_app(struct i40e_dcbx_config *cfg,
|
|
struct i40e_ieee_app_priority_table *app)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < cfg->numapps; i++) {
|
|
if (app->selector == cfg->app[i].selector &&
|
|
app->protocolid == cfg->app[i].protocolid &&
|
|
app->priority == cfg->app[i].priority)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* i40e_dcbnl_flush_apps - Delete all removed APPs
|
|
* @pf: the corresponding pf
|
|
* @new_cfg: new DCBX configuration data
|
|
*
|
|
* Find and delete all APPs that are not present in the passed
|
|
* DCB configuration
|
|
**/
|
|
void i40e_dcbnl_flush_apps(struct i40e_pf *pf,
|
|
struct i40e_dcbx_config *new_cfg)
|
|
{
|
|
struct i40e_ieee_app_priority_table app;
|
|
struct i40e_dcbx_config *dcbxcfg;
|
|
struct i40e_hw *hw = &pf->hw;
|
|
int i;
|
|
|
|
dcbxcfg = &hw->local_dcbx_config;
|
|
for (i = 0; i < dcbxcfg->numapps; i++) {
|
|
app = dcbxcfg->app[i];
|
|
/* The APP is not available anymore delete it */
|
|
if (!i40e_dcbnl_find_app(new_cfg, &app))
|
|
i40e_dcbnl_del_app(pf, &app);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i40e_dcbnl_setup - DCBNL setup
|
|
* @vsi: the corresponding vsi
|
|
*
|
|
* Set up DCBNL ops and initial APP TLVs
|
|
**/
|
|
void i40e_dcbnl_setup(struct i40e_vsi *vsi)
|
|
{
|
|
struct net_device *dev = vsi->netdev;
|
|
struct i40e_pf *pf = i40e_netdev_to_pf(dev);
|
|
|
|
/* Not DCB capable */
|
|
if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
|
|
return;
|
|
|
|
/* Do not setup DCB NL ops for MFP mode */
|
|
if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
|
|
dev->dcbnl_ops = &dcbnl_ops;
|
|
|
|
/* Set initial IEEE DCB settings */
|
|
i40e_dcbnl_set_all(vsi);
|
|
}
|
|
#endif /* CONFIG_I40E_DCB */
|