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![Jakub Kicinski](/assets/img/avatar_default.png)
Add app callback for reporting eswitch mode. Non-SRIOV apps should not implement this callback, nfp_app code will then respond with -EOPNOTSUPP. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
199 lines
4.7 KiB
C
199 lines
4.7 KiB
C
/*
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* Copyright (C) 2017 Netronome Systems, Inc.
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*
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* This software is dual licensed under the GNU General License Version 2,
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* June 1991 as shown in the file COPYING in the top-level directory of this
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* source tree or the BSD 2-Clause License provided below. You have the
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* option to license this software under the complete terms of either license.
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*
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* The BSD 2-Clause License:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/rtnetlink.h>
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#include <net/devlink.h>
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#include "nfpcore/nfp_nsp.h"
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#include "nfp_app.h"
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#include "nfp_main.h"
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#include "nfp_port.h"
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static int
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nfp_devlink_fill_eth_port(struct nfp_port *port,
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struct nfp_eth_table_port *copy)
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{
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struct nfp_eth_table_port *eth_port;
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eth_port = __nfp_port_get_eth_port(port);
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if (!eth_port)
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return -EINVAL;
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memcpy(copy, eth_port, sizeof(*eth_port));
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return 0;
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}
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static int
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nfp_devlink_fill_eth_port_from_id(struct nfp_pf *pf, unsigned int port_index,
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struct nfp_eth_table_port *copy)
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{
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struct nfp_port *port;
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port = nfp_port_from_id(pf, NFP_PORT_PHYS_PORT, port_index);
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return nfp_devlink_fill_eth_port(port, copy);
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}
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static int
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nfp_devlink_set_lanes(struct nfp_pf *pf, unsigned int idx, unsigned int lanes)
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{
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struct nfp_nsp *nsp;
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int ret;
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nsp = nfp_eth_config_start(pf->cpp, idx);
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if (IS_ERR(nsp))
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return PTR_ERR(nsp);
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ret = __nfp_eth_set_split(nsp, lanes);
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if (ret) {
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nfp_eth_config_cleanup_end(nsp);
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return ret;
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}
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ret = nfp_eth_config_commit_end(nsp);
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if (ret < 0)
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return ret;
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if (ret) /* no change */
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return 0;
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return nfp_net_refresh_port_table_sync(pf);
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}
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static int
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nfp_devlink_port_split(struct devlink *devlink, unsigned int port_index,
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unsigned int count)
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{
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struct nfp_pf *pf = devlink_priv(devlink);
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struct nfp_eth_table_port eth_port;
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int ret;
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if (count < 2)
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return -EINVAL;
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mutex_lock(&pf->lock);
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rtnl_lock();
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ret = nfp_devlink_fill_eth_port_from_id(pf, port_index, ð_port);
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rtnl_unlock();
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if (ret)
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goto out;
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if (eth_port.is_split || eth_port.port_lanes % count) {
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ret = -EINVAL;
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goto out;
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}
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ret = nfp_devlink_set_lanes(pf, eth_port.index,
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eth_port.port_lanes / count);
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out:
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mutex_unlock(&pf->lock);
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return ret;
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}
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static int
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nfp_devlink_port_unsplit(struct devlink *devlink, unsigned int port_index)
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{
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struct nfp_pf *pf = devlink_priv(devlink);
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struct nfp_eth_table_port eth_port;
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int ret;
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mutex_lock(&pf->lock);
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rtnl_lock();
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ret = nfp_devlink_fill_eth_port_from_id(pf, port_index, ð_port);
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rtnl_unlock();
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if (ret)
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goto out;
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if (!eth_port.is_split) {
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ret = -EINVAL;
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goto out;
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}
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ret = nfp_devlink_set_lanes(pf, eth_port.index, eth_port.port_lanes);
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out:
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mutex_unlock(&pf->lock);
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return ret;
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}
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static int nfp_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
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{
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struct nfp_pf *pf = devlink_priv(devlink);
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int ret;
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mutex_lock(&pf->lock);
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if (!pf->app) {
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ret = -EBUSY;
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goto out;
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}
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ret = nfp_app_eswitch_mode_get(pf->app, mode);
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out:
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mutex_unlock(&pf->lock);
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return ret;
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}
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const struct devlink_ops nfp_devlink_ops = {
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.port_split = nfp_devlink_port_split,
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.port_unsplit = nfp_devlink_port_unsplit,
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.eswitch_mode_get = nfp_devlink_eswitch_mode_get,
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};
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int nfp_devlink_port_register(struct nfp_app *app, struct nfp_port *port)
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{
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struct nfp_eth_table_port eth_port;
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struct devlink *devlink;
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int ret;
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rtnl_lock();
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ret = nfp_devlink_fill_eth_port(port, ð_port);
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rtnl_unlock();
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if (ret)
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return ret;
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devlink_port_type_eth_set(&port->dl_port, port->netdev);
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if (eth_port.is_split)
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devlink_port_split_set(&port->dl_port, eth_port.label_port);
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devlink = priv_to_devlink(app->pf);
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return devlink_port_register(devlink, &port->dl_port, port->eth_id);
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}
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void nfp_devlink_port_unregister(struct nfp_port *port)
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{
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devlink_port_unregister(&port->dl_port);
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}
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