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linux/drivers/net/ethernet/cisco/enic/enic_pp.c
Thomas Gleixner e6550b3ee1 treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_168.RULE (part 1) 
Based on the normalized pattern:

    this program is free software you may redistribute it and/or modify it
    under the terms of the gnu general public license as published by the
    free software foundation version 2 of the license  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

extracted by the scancode license scanner the SPDX license identifier

    GPL-2.0-only

has been chosen to replace the boilerplate/reference.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-10 14:51:36 +02:00

353 lines
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// SPDX-License-Identifier: GPL-2.0-only
// Copyright 2011 Cisco Systems, Inc. All rights reserved.
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/rtnetlink.h>
#include <net/ip.h>
#include "vnic_vic.h"
#include "enic_res.h"
#include "enic.h"
#include "enic_dev.h"
#include "enic_pp.h"
/*
* Checks validity of vf index that came in
* port profile request
*/
int enic_is_valid_pp_vf(struct enic *enic, int vf, int *err)
{
if (vf != PORT_SELF_VF) {
#ifdef CONFIG_PCI_IOV
if (enic_sriov_enabled(enic)) {
if (vf < 0 || vf >= enic->num_vfs) {
*err = -EINVAL;
goto err_out;
}
} else {
*err = -EOPNOTSUPP;
goto err_out;
}
#else
*err = -EOPNOTSUPP;
goto err_out;
#endif
}
if (vf == PORT_SELF_VF && !enic_is_dynamic(enic)) {
*err = -EOPNOTSUPP;
goto err_out;
}
*err = 0;
return 1;
err_out:
return 0;
}
static int enic_set_port_profile(struct enic *enic, int vf)
{
struct net_device *netdev = enic->netdev;
struct enic_port_profile *pp;
struct vic_provinfo *vp;
const u8 oui[3] = VIC_PROVINFO_CISCO_OUI;
const __be16 os_type = htons(VIC_GENERIC_PROV_OS_TYPE_LINUX);
const u8 *client_mac;
char uuid_str[38];
char client_mac_str[18];
int err;
ENIC_PP_BY_INDEX(enic, vf, pp, &err);
if (err)
return err;
if (!(pp->set & ENIC_SET_NAME) || !strlen(pp->name))
return -EINVAL;
vp = vic_provinfo_alloc(GFP_KERNEL, oui,
VIC_PROVINFO_GENERIC_TYPE);
if (!vp)
return -ENOMEM;
VIC_PROVINFO_ADD_TLV(vp,
VIC_GENERIC_PROV_TLV_PORT_PROFILE_NAME_STR,
strlen(pp->name) + 1, pp->name);
if (!is_zero_ether_addr(pp->mac_addr)) {
client_mac = pp->mac_addr;
} else if (vf == PORT_SELF_VF) {
client_mac = netdev->dev_addr;
} else {
netdev_err(netdev, "Cannot find pp mac address "
"for VF %d\n", vf);
err = -EINVAL;
goto add_tlv_failure;
}
VIC_PROVINFO_ADD_TLV(vp,
VIC_GENERIC_PROV_TLV_CLIENT_MAC_ADDR,
ETH_ALEN, client_mac);
snprintf(client_mac_str, sizeof(client_mac_str), "%pM", client_mac);
VIC_PROVINFO_ADD_TLV(vp,
VIC_GENERIC_PROV_TLV_CLUSTER_PORT_UUID_STR,
sizeof(client_mac_str), client_mac_str);
if (pp->set & ENIC_SET_INSTANCE) {
sprintf(uuid_str, "%pUB", pp->instance_uuid);
VIC_PROVINFO_ADD_TLV(vp,
VIC_GENERIC_PROV_TLV_CLIENT_UUID_STR,
sizeof(uuid_str), uuid_str);
}
if (pp->set & ENIC_SET_HOST) {
sprintf(uuid_str, "%pUB", pp->host_uuid);
VIC_PROVINFO_ADD_TLV(vp,
VIC_GENERIC_PROV_TLV_HOST_UUID_STR,
sizeof(uuid_str), uuid_str);
}
VIC_PROVINFO_ADD_TLV(vp,
VIC_GENERIC_PROV_TLV_OS_TYPE,
sizeof(os_type), &os_type);
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_init_prov2, (u8 *)vp,
vic_provinfo_size(vp));
err = enic_dev_status_to_errno(err);
add_tlv_failure:
vic_provinfo_free(vp);
return err;
}
static int enic_unset_port_profile(struct enic *enic, int vf)
{
int err;
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_deinit);
if (err)
return enic_dev_status_to_errno(err);
if (vf == PORT_SELF_VF)
enic_reset_addr_lists(enic);
return 0;
}
static int enic_are_pp_different(struct enic_port_profile *pp1,
struct enic_port_profile *pp2)
{
return strcmp(pp1->name, pp2->name) | !!memcmp(pp1->instance_uuid,
pp2->instance_uuid, PORT_UUID_MAX) |
!!memcmp(pp1->host_uuid, pp2->host_uuid, PORT_UUID_MAX) |
!ether_addr_equal(pp1->mac_addr, pp2->mac_addr);
}
static int enic_pp_preassociate(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp);
static int enic_pp_disassociate(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp);
static int enic_pp_preassociate_rr(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp);
static int enic_pp_associate(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp);
static int (*enic_pp_handlers[])(struct enic *enic, int vf,
struct enic_port_profile *prev_state,
int *restore_pp) = {
[PORT_REQUEST_PREASSOCIATE] = enic_pp_preassociate,
[PORT_REQUEST_PREASSOCIATE_RR] = enic_pp_preassociate_rr,
[PORT_REQUEST_ASSOCIATE] = enic_pp_associate,
[PORT_REQUEST_DISASSOCIATE] = enic_pp_disassociate,
};
static const int enic_pp_handlers_count =
ARRAY_SIZE(enic_pp_handlers);
static int enic_pp_preassociate(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp)
{
return -EOPNOTSUPP;
}
static int enic_pp_disassociate(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp)
{
struct net_device *netdev = enic->netdev;
struct enic_port_profile *pp;
int err;
ENIC_PP_BY_INDEX(enic, vf, pp, &err);
if (err)
return err;
/* Deregister mac addresses */
if (!is_zero_ether_addr(pp->mac_addr))
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_del_addr,
pp->mac_addr);
else if (vf == PORT_SELF_VF && !is_zero_ether_addr(netdev->dev_addr))
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_del_addr,
netdev->dev_addr);
return enic_unset_port_profile(enic, vf);
}
static int enic_pp_preassociate_rr(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp)
{
struct enic_port_profile *pp;
int err;
int active = 0;
ENIC_PP_BY_INDEX(enic, vf, pp, &err);
if (err)
return err;
if (pp->request != PORT_REQUEST_ASSOCIATE) {
/* If pre-associate is not part of an associate.
We always disassociate first */
err = enic_pp_handlers[PORT_REQUEST_DISASSOCIATE](enic, vf,
prev_pp, restore_pp);
if (err)
return err;
*restore_pp = 0;
}
*restore_pp = 0;
err = enic_set_port_profile(enic, vf);
if (err)
return err;
/* If pre-associate is not part of an associate. */
if (pp->request != PORT_REQUEST_ASSOCIATE) {
/* Enable device as standby */
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_enable2,
active);
err = enic_dev_status_to_errno(err);
}
return err;
}
static int enic_pp_associate(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp)
{
struct net_device *netdev = enic->netdev;
struct enic_port_profile *pp;
int err;
int active = 1;
ENIC_PP_BY_INDEX(enic, vf, pp, &err);
if (err)
return err;
/* Check if a pre-associate was called before */
if (prev_pp->request != PORT_REQUEST_PREASSOCIATE_RR ||
(prev_pp->request == PORT_REQUEST_PREASSOCIATE_RR &&
enic_are_pp_different(prev_pp, pp))) {
err = enic_pp_handlers[PORT_REQUEST_DISASSOCIATE](
enic, vf, prev_pp, restore_pp);
if (err)
return err;
*restore_pp = 0;
}
err = enic_pp_handlers[PORT_REQUEST_PREASSOCIATE_RR](
enic, vf, prev_pp, restore_pp);
if (err)
return err;
*restore_pp = 0;
/* Enable device as active */
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_enable2, active);
err = enic_dev_status_to_errno(err);
if (err)
return err;
/* Register mac address */
if (!is_zero_ether_addr(pp->mac_addr))
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_add_addr,
pp->mac_addr);
else if (vf == PORT_SELF_VF && !is_zero_ether_addr(netdev->dev_addr))
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_add_addr,
netdev->dev_addr);
return 0;
}
int enic_process_set_pp_request(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp)
{
struct enic_port_profile *pp;
int err;
ENIC_PP_BY_INDEX(enic, vf, pp, &err);
if (err)
return err;
if (pp->request >= enic_pp_handlers_count
|| !enic_pp_handlers[pp->request])
return -EOPNOTSUPP;
return enic_pp_handlers[pp->request](enic, vf, prev_pp, restore_pp);
}
int enic_process_get_pp_request(struct enic *enic, int vf,
int request, u16 *response)
{
int err, status = ERR_SUCCESS;
switch (request) {
case PORT_REQUEST_PREASSOCIATE_RR:
case PORT_REQUEST_ASSOCIATE:
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic,
vnic_dev_enable2_done, &status);
break;
case PORT_REQUEST_DISASSOCIATE:
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic,
vnic_dev_deinit_done, &status);
break;
default:
return -EINVAL;
}
if (err)
status = err;
switch (status) {
case ERR_SUCCESS:
*response = PORT_PROFILE_RESPONSE_SUCCESS;
break;
case ERR_EINVAL:
*response = PORT_PROFILE_RESPONSE_INVALID;
break;
case ERR_EBADSTATE:
*response = PORT_PROFILE_RESPONSE_BADSTATE;
break;
case ERR_ENOMEM:
*response = PORT_PROFILE_RESPONSE_INSUFFICIENT_RESOURCES;
break;
case ERR_EINPROGRESS:
*response = PORT_PROFILE_RESPONSE_INPROGRESS;
break;
default:
*response = PORT_PROFILE_RESPONSE_ERROR;
break;
}
return 0;
}
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