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nfp: introduce nfp_port 

Encapsulate port information into struct nfp_port.  nfp_port will
soon be extended to contain devlink_port information.  It also makes
it easier to reuse port-related code between vNICs and representors.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2017-05-22 10:59:28 -07:00 committed by David S. Miller
parent d88b0a233f
commit eb488c26d7
7 changed files with 275 additions and 63 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/ethernet/netronome/nfp/Makefile
View File

@ -20,7 +20,8 @@ nfp-objs := \
nfp_net_ethtool.o \
nfp_net_offload.o \
nfp_net_main.o \
nfp_netvf_main.o
nfp_netvf_main.o \
nfp_port.o
ifeq ($(CONFIG_BPF_SYSCALL),y)
nfp-objs += \

14
drivers/net/ethernet/netronome/nfp/nfp_net.h
View File

@ -116,6 +116,7 @@ struct nfp_cpp;
struct nfp_eth_table_port;
struct nfp_net;
struct nfp_net_r_vector;
struct nfp_port;
/* Convenience macro for wrapping descriptor index on ring size */
#define D_IDX(ring, idx) ((idx) & ((ring)->cnt - 1))
@ -558,7 +559,7 @@ struct nfp_net_dp {
* @vnic_list: Entry on device vNIC list
* @pdev: Backpointer to PCI device
* @app: APP handle if available
* @eth_port: Translated ETH Table port entry
* @port: Pointer to nfp_port structure if vNIC is a port
*/
struct nfp_net {
struct nfp_net_dp dp;
@ -630,7 +631,7 @@ struct nfp_net {
struct pci_dev *pdev;
struct nfp_app *app;
struct nfp_eth_table_port *eth_port;
struct nfp_port *port;
};
/* Functions to read/write from/to a BAR
@ -802,6 +803,13 @@ static inline u32 nfp_qcp_wr_ptr_read(u8 __iomem *q)
/* Globals */
extern const char nfp_driver_version[];
extern const struct net_device_ops nfp_net_netdev_ops;
static inline bool nfp_netdev_is_nfp_net(struct net_device *netdev)
{
return netdev->netdev_ops == &nfp_net_netdev_ops;
}
/* Prototypes */
void nfp_net_get_fw_version(struct nfp_net_fw_version *fw_ver,
void __iomem *ctrl_bar);
@ -835,8 +843,6 @@ int nfp_net_ring_reconfig(struct nfp_net *nn, struct nfp_net_dp *new,
struct netlink_ext_ack *extack);
bool nfp_net_link_changed_read_clear(struct nfp_net *nn);
int nfp_net_refresh_eth_port(struct nfp_net *nn);
void nfp_net_refresh_port_table(struct nfp_net *nn);
#ifdef CONFIG_NFP_DEBUG
void nfp_net_debugfs_create(void);

25
drivers/net/ethernet/netronome/nfp/nfp_net_common.c
View File

@ -70,6 +70,7 @@
#include "nfpcore/nfp_nsp.h"
#include "nfp_net_ctrl.h"
#include "nfp_net.h"
#include "nfp_port.h"
/**
* nfp_net_get_fw_version() - Read and parse the FW version
@ -2846,26 +2847,6 @@ nfp_net_features_check(struct sk_buff *skb, struct net_device *dev,
return features;
}
static int
nfp_net_get_phys_port_name(struct net_device *netdev, char *name, size_t len)
{
struct nfp_net *nn = netdev_priv(netdev);
int err;
if (!nn->eth_port)
return -EOPNOTSUPP;
if (!nn->eth_port->is_split)
err = snprintf(name, len, "p%d", nn->eth_port->label_port);
else
err = snprintf(name, len, "p%ds%d", nn->eth_port->label_port,
nn->eth_port->label_subport);
if (err >= len)
return -EINVAL;
return 0;
}
/**
* nfp_net_set_vxlan_port() - set vxlan port in SW and reconfigure HW
* @nn: NFP Net device to reconfigure
@ -3028,7 +3009,7 @@ static int nfp_net_xdp(struct net_device *netdev, struct netdev_xdp *xdp)
}
}
static const struct net_device_ops nfp_net_netdev_ops = {
const struct net_device_ops nfp_net_netdev_ops = {
.ndo_open = nfp_net_netdev_open,
.ndo_stop = nfp_net_netdev_close,
.ndo_start_xmit = nfp_net_tx,
@ -3040,7 +3021,7 @@ static const struct net_device_ops nfp_net_netdev_ops = {
.ndo_set_mac_address = eth_mac_addr,
.ndo_set_features = nfp_net_set_features,
.ndo_features_check = nfp_net_features_check,
.ndo_get_phys_port_name = nfp_net_get_phys_port_name,
.ndo_get_phys_port_name = nfp_port_get_phys_port_name,
.ndo_udp_tunnel_add = nfp_net_add_vxlan_port,
.ndo_udp_tunnel_del = nfp_net_del_vxlan_port,
.ndo_xdp = nfp_net_xdp,

39
drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
View File

@ -53,6 +53,7 @@
#include "nfp_app.h"
#include "nfp_net_ctrl.h"
#include "nfp_net.h"
#include "nfp_port.h"
enum nfp_dump_diag {
NFP_DUMP_NSP_DIAG = 0,
@ -196,33 +197,42 @@ nfp_net_get_link_ksettings(struct net_device *netdev,
[NFP_NET_CFG_STS_LINK_RATE_50G] = SPEED_50000,
[NFP_NET_CFG_STS_LINK_RATE_100G] = SPEED_100000,
};
struct nfp_net *nn = netdev_priv(netdev);
struct nfp_eth_table_port *eth_port;
struct nfp_port *port;
struct nfp_net *nn;
u32 sts, ls;
/* Init to unknowns */
ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
cmd->base.port = PORT_OTHER;
cmd->base.speed = SPEED_UNKNOWN;
cmd->base.duplex = DUPLEX_UNKNOWN;
if (nn->eth_port)
cmd->base.autoneg = nn->eth_port->aneg != NFP_ANEG_DISABLED ?
port = nfp_port_from_netdev(netdev);
eth_port = __nfp_port_get_eth_port(port);
if (eth_port)
cmd->base.autoneg = eth_port->aneg != NFP_ANEG_DISABLED ?
AUTONEG_ENABLE : AUTONEG_DISABLE;
if (!netif_carrier_ok(netdev))
return 0;
if (!nfp_netdev_is_nfp_net(netdev))
return -EOPNOTSUPP;
nn = netdev_priv(netdev);
/* Use link speed from ETH table if available, otherwise try the BAR */
if (nn->eth_port) {
if (eth_port) {
int err;
if (nfp_net_link_changed_read_clear(nn)) {
err = nfp_net_refresh_eth_port(nn);
err = nfp_net_refresh_eth_port(port);
if (err)
return err;
}
cmd->base.port = nn->eth_port->port_type;
cmd->base.speed = nn->eth_port->speed;
cmd->base.port = eth_port->port_type;
cmd->base.speed = eth_port->speed;
cmd->base.duplex = DUPLEX_FULL;
return 0;
}
@ -247,19 +257,22 @@ static int
nfp_net_set_link_ksettings(struct net_device *netdev,
const struct ethtool_link_ksettings *cmd)
{
struct nfp_net *nn = netdev_priv(netdev);
struct nfp_eth_table_port *eth_port;
struct nfp_port *port;
struct nfp_nsp *nsp;
int err;
if (!nn->eth_port)
port = nfp_port_from_netdev(netdev);
eth_port = __nfp_port_get_eth_port(port);
if (!eth_port)
return -EOPNOTSUPP;
if (netif_running(netdev)) {
nn_warn(nn, "Changing settings not allowed on an active interface. It may cause the port to be disabled until reboot.\n");
netdev_warn(netdev, "Changing settings not allowed on an active interface. It may cause the port to be disabled until reboot.\n");
return -EBUSY;
}
nsp = nfp_eth_config_start(nn->app->cpp, nn->eth_port->index);
nsp = nfp_eth_config_start(port->app->cpp, eth_port->index);
if (IS_ERR(nsp))
return PTR_ERR(nsp);
@ -268,7 +281,7 @@ nfp_net_set_link_ksettings(struct net_device *netdev,
if (err)
goto err_bad_set;
if (cmd->base.speed != SPEED_UNKNOWN) {
u32 speed = cmd->base.speed / nn->eth_port->lanes;
u32 speed = cmd->base.speed / eth_port->lanes;
err = __nfp_eth_set_speed(nsp, speed);
if (err)
@ -279,7 +292,7 @@ nfp_net_set_link_ksettings(struct net_device *netdev,
if (err > 0)
return 0; /* no change */
nfp_net_refresh_port_table(nn);
nfp_net_refresh_port_table(port);
return err;

68
drivers/net/ethernet/netronome/nfp/nfp_net_main.c
View File

@ -58,6 +58,7 @@
#include "nfp_net_ctrl.h"
#include "nfp_net.h"
#include "nfp_main.h"
#include "nfp_port.h"
#define NFP_PF_CSR_SLICE_SIZE (32 * 1024)
@ -142,14 +143,16 @@ err_area:
static void
nfp_net_get_mac_addr(struct nfp_net *nn, struct nfp_cpp *cpp, unsigned int id)
{
struct nfp_eth_table_port *eth_port;
struct nfp_net_dp *dp = &nn->dp;
u8 mac_addr[ETH_ALEN];
const char *mac_str;
char name[32];
if (nn->eth_port) {
ether_addr_copy(dp->netdev->dev_addr, nn->eth_port->mac_addr);
ether_addr_copy(dp->netdev->perm_addr, nn->eth_port->mac_addr);
eth_port = __nfp_port_get_eth_port(nn->port);
if (eth_port) {
ether_addr_copy(dp->netdev->dev_addr, eth_port->mac_addr);
ether_addr_copy(dp->netdev->perm_addr, eth_port->mac_addr);
return;
}
@ -270,6 +273,7 @@ static u8 __iomem *nfp_net_pf_map_ctrl_bar(struct nfp_pf *pf)
static void nfp_net_pf_free_vnic(struct nfp_pf *pf, struct nfp_net *nn)
{
nfp_port_free(nn->port);
list_del(&nn->vnic_list);
pf->num_vnics--;
nfp_net_free(nn);
@ -291,6 +295,7 @@ nfp_net_pf_alloc_vnic(struct nfp_pf *pf, void __iomem *ctrl_bar,
int stride, struct nfp_net_fw_version *fw_ver,
unsigned int eth_id)
{
struct nfp_eth_table_port *eth_port;
u32 n_tx_rings, n_rx_rings;
struct nfp_net *nn;
@ -310,7 +315,18 @@ nfp_net_pf_alloc_vnic(struct nfp_pf *pf, void __iomem *ctrl_bar,
nn->dp.is_vf = 0;
nn->stride_rx = stride;
nn->stride_tx = stride;
nn->eth_port = nfp_net_find_port(pf->eth_tbl, eth_id);
eth_port = nfp_net_find_port(pf->eth_tbl, eth_id);
if (eth_port) {
nn->port = nfp_port_alloc(pf->app, NFP_PORT_PHYS_PORT,
nn->dp.netdev);
if (IS_ERR(nn->port)) {
nfp_net_free(nn);
return ERR_CAST(nn->port);
}
nn->port->eth_id = eth_id;
nn->port->eth_port = eth_port;
}
pf->num_vnics++;
list_add_tail(&nn->vnic_list, &pf->vnics);
@ -380,12 +396,12 @@ nfp_net_pf_alloc_vnics(struct nfp_pf *pf, void __iomem *ctrl_bar,
ctrl_bar += NFP_PF_CSR_SLICE_SIZE;
/* Check if vNIC has external port associated and cfg is OK */
if (pf->eth_tbl && !nn->eth_port) {
if (pf->eth_tbl && !nn->port) {
nfp_err(pf->cpp, "NSP port entries don't match vNICs (no entry for port #%d)\n", i);
err = -EINVAL;
goto err_free_prev;
}
if (nn->eth_port && nn->eth_port->override_changed) {
if (nn->port && nn->port->eth_port->override_changed) {
nfp_warn(pf->cpp, "Config changed for port #%d, reboot required before port will be operational\n", i);
nfp_net_pf_free_vnic(pf, nn);
continue;
@ -526,13 +542,20 @@ static void nfp_net_refresh_vnics(struct work_struct *work)
rtnl_lock();
list_for_each_entry(nn, &pf->vnics, vnic_list) {
if (!nn->eth_port)
if (!__nfp_port_get_eth_port(nn->port))
continue;
nn->eth_port = nfp_net_find_port(eth_table,
nn->eth_port->eth_index);
if (!nn->eth_port)
nfp_err(pf->cpp,
"Warning: port disappeared after reconfig\n");
nn->port->eth_port = nfp_net_find_port(eth_table,
nn->port->eth_id);
if (!nn->port->eth_port) {
nfp_warn(pf->cpp, "Warning: port #%d not present after reconfig\n",
nn->port->eth_id);
continue;
}
if (nn->port->eth_port->override_changed) {
nfp_warn(pf->cpp, "Port config changed, unregistering. Reboot required before port will be operational again.\n");
nn->port->type = NFP_PORT_INVALID;
continue;
}
}
rtnl_unlock();
@ -540,11 +563,9 @@ static void nfp_net_refresh_vnics(struct work_struct *work)
pf->eth_tbl = eth_table;
list_for_each_entry_safe(nn, next, &pf->vnics, vnic_list) {
if (nn->eth_port && !nn->eth_port->override_changed)
if (!nn->port || nn->port->type != NFP_PORT_INVALID)
continue;
nn_warn(nn, "Port config changed, unregistering. Reboot required before port will be operational again.\n");
nfp_net_debugfs_dir_clean(&nn->debugfs_dir);
nfp_net_clean(nn);
@ -557,32 +578,33 @@ out:
mutex_unlock(&pf->lock);
}
void nfp_net_refresh_port_table(struct nfp_net *nn)
void nfp_net_refresh_port_table(struct nfp_port *port)
{
struct nfp_pf *pf = pci_get_drvdata(nn->pdev);
struct nfp_pf *pf = port->app->pf;
schedule_work(&pf->port_refresh_work);
}
int nfp_net_refresh_eth_port(struct nfp_net *nn)
int nfp_net_refresh_eth_port(struct nfp_port *port)
{
struct nfp_cpp *cpp = port->app->cpp;
struct nfp_eth_table_port *eth_port;
struct nfp_eth_table *eth_table;
eth_table = nfp_eth_read_ports(nn->app->cpp);
eth_table = nfp_eth_read_ports(cpp);
if (!eth_table) {
nn_err(nn, "Error refreshing port state table!\n");
nfp_err(cpp, "Error refreshing port state table!\n");
return -EIO;
}
eth_port = nfp_net_find_port(eth_table, nn->eth_port->eth_index);
eth_port = nfp_net_find_port(eth_table, port->eth_id);
if (!eth_port) {
nn_err(nn, "Error finding state of the port!\n");
nfp_err(cpp, "Error finding state of the port!\n");
kfree(eth_table);
return -EIO;
}
memcpy(nn->eth_port, eth_port, sizeof(*eth_port));
memcpy(port->eth_port, eth_port, sizeof(*eth_port));
kfree(eth_table);

104
drivers/net/ethernet/netronome/nfp/nfp_port.c Normal file
View File

@ -0,0 +1,104 @@
/*
* Copyright (C) 2017 Netronome Systems, Inc.
*
* This software is dual licensed under the GNU General License Version 2,
* June 1991 as shown in the file COPYING in the top-level directory of this
* source tree or the BSD 2-Clause License provided below. You have the
* option to license this software under the complete terms of either license.
*
* The BSD 2-Clause License:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "nfpcore/nfp_nsp.h"
#include "nfp_app.h"
#include "nfp_main.h"
#include "nfp_net.h"
#include "nfp_port.h"
struct nfp_port *nfp_port_from_netdev(struct net_device *netdev)
{
struct nfp_net *nn;
if (WARN_ON(!nfp_netdev_is_nfp_net(netdev)))
return NULL;
nn = netdev_priv(netdev);
return nn->port;
}
struct nfp_eth_table_port *__nfp_port_get_eth_port(struct nfp_port *port)
{
if (!port)
return NULL;
if (port->type != NFP_PORT_PHYS_PORT)
return NULL;
return port->eth_port;
}
int
nfp_port_get_phys_port_name(struct net_device *netdev, char *name, size_t len)
{
struct nfp_eth_table_port *eth_port;
struct nfp_port *port;
int n;
port = nfp_port_from_netdev(netdev);
eth_port = __nfp_port_get_eth_port(port);
if (!eth_port)
return -EOPNOTSUPP;
if (!eth_port->is_split)
n = snprintf(name, len, "p%d", eth_port->label_port);
else
n = snprintf(name, len, "p%ds%d", eth_port->label_port,
eth_port->label_subport);
if (n >= len)
return -EINVAL;
return 0;
}
struct nfp_port *
nfp_port_alloc(struct nfp_app *app, enum nfp_port_type type,
struct net_device *netdev)
{
struct nfp_port *port;
port = kzalloc(sizeof(*port), GFP_KERNEL);
if (!port)
return ERR_PTR(-ENOMEM);
port->netdev = netdev;
port->type = type;
port->app = app;
return port;
}
void nfp_port_free(struct nfp_port *port)
{
kfree(port);
}

85
drivers/net/ethernet/netronome/nfp/nfp_port.h Normal file
View File

@ -0,0 +1,85 @@
/*
* Copyright (C) 2017 Netronome Systems, Inc.
*
* This software is dual licensed under the GNU General License Version 2,
* June 1991 as shown in the file COPYING in the top-level directory of this
* source tree or the BSD 2-Clause License provided below. You have the
* option to license this software under the complete terms of either license.
*
* The BSD 2-Clause License:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _NFP_PORT_H_
#define _NFP_PORT_H_
struct net_device;
struct nfp_app;
struct nfp_port;
/**
* enum nfp_port_type - type of port NFP can switch traffic to
* @NFP_PORT_INVALID: port is invalid, %NFP_PORT_PHYS_PORT transitions to this
* state when port disappears because of FW fault or config
* change
* @NFP_PORT_PHYS_PORT: external NIC port
*/
enum nfp_port_type {
NFP_PORT_INVALID,
NFP_PORT_PHYS_PORT,
};
/**
* struct nfp_port - structure representing NFP port
* @netdev: backpointer to associated netdev
* @type: what port type does the entity represent
* @app: backpointer to the app structure
* @eth_id: for %NFP_PORT_PHYS_PORT port ID in NFP enumeration scheme
* @eth_port: for %NFP_PORT_PHYS_PORT translated ETH Table port entry
*/
struct nfp_port {
struct net_device *netdev;
enum nfp_port_type type;
struct nfp_app *app;
unsigned int eth_id;
struct nfp_eth_table_port *eth_port;
};
struct nfp_port *nfp_port_from_netdev(struct net_device *netdev);
struct nfp_eth_table_port *__nfp_port_get_eth_port(struct nfp_port *port);
int
nfp_port_get_phys_port_name(struct net_device *netdev, char *name, size_t len);
struct nfp_port *
nfp_port_alloc(struct nfp_app *app, enum nfp_port_type type,
struct net_device *netdev);
void nfp_port_free(struct nfp_port *port);
int nfp_net_refresh_eth_port(struct nfp_port *port);
void nfp_net_refresh_port_table(struct nfp_port *port);
#endif