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