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path: root/drivers/net/ethernet/cisco/enic/enic_pp.c
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Diffstat (limited to 'drivers/net/ethernet/cisco/enic/enic_pp.c')
-rw-r--r--drivers/net/ethernet/cisco/enic/enic_pp.c368
1 files changed, 368 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cisco/enic/enic_pp.c b/drivers/net/ethernet/cisco/enic/enic_pp.c
new file mode 100644
index 000000000..e6a83198c
--- /dev/null
+++ b/drivers/net/ethernet/cisco/enic/enic_pp.c
@@ -0,0 +1,368 @@
+/*
+ * Copyright 2011 Cisco Systems, Inc. All rights reserved.
+ *
+ * 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.
+ *
+ */
+
+#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);
+ char uuid_str[38];
+ char client_mac_str[18];
+ u8 *client_mac;
+ 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;
+}