[openib-general] [PATCH v2 7/11] Handling of various configurable parameters of the driver
Ramachandra K
ramachandra.kuchimanchi at qlogic.com
Tue Nov 14 06:57:21 PST 2006
Adds the files that handle various configurable parameters of the VNIC
driver ---- configuration of virtual NIC, control, data connections
to the VEx and general IB connection parameters.
Signed-off-by: Ramachandra K <ramachandra.kuchimanchi at qlogic.com>
---
drivers/infiniband/ulp/vnic/vnic_config.c | 348 +++++++++++++++++++++++++++++
drivers/infiniband/ulp/vnic/vnic_config.h | 213 ++++++++++++++++++
2 files changed, 561 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/ulp/vnic/vnic_config.c b/drivers/infiniband/ulp/vnic/vnic_config.c
new file mode 100644
index 0000000..4cca951
--- /dev/null
+++ b/drivers/infiniband/ulp/vnic/vnic_config.c
@@ -0,0 +1,348 @@
+/*
+ * Copyright (c) 2006 QLogic, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - 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 <linux/netdevice.h>
+#include <linux/string.h>
+#include <linux/utsname.h>
+#include <linux/if_vlan.h>
+
+#include <rdma/ib_cache.h>
+
+#include "vnic_util.h"
+#include "vnic_config.h"
+#include "vnic_trailer.h"
+
+#define SST_AGN 0x10ULL
+#define SST_OUI 0x00066AULL
+
+enum {
+ CONTROL_PATH_ID = 0x0,
+ DATA_PATH_ID = 0x1
+};
+
+#define IOC_NUMBER(GUID) (((GUID) >> 32) & 0xFF)
+
+static u16 max_mtu = MAX_MTU;
+
+static u32 default_no_path_timeout = DEFAULT_NO_PATH_TIMEOUT;
+static u32 sa_path_rec_get_timeout = SA_PATH_REC_GET_TIMEOUT;
+
+static u32 default_primary_reconnect_timeout =
+ DEFAULT_PRIMARY_RECONNECT_TIMEOUT;
+static u32 default_primary_switch_timeout = DEFAULT_PRIMARY_SWITCH_TIMEOUT;
+static int default_prefer_primary = DEFAULT_PREFER_PRIMARY;
+
+static int use_rx_csum = VNIC_USE_RX_CSUM;
+static int use_tx_csum = VNIC_USE_TX_CSUM;
+
+module_param(max_mtu, ushort, 0444);
+MODULE_PARM_DESC(max_mtu, "Maximum MTU size (1500-9500). Default is 9500");
+
+module_param(default_prefer_primary, bool, 0444);
+MODULE_PARM_DESC(default_prefer_primary, "Determines if primary path is"
+ " preferred (1) or not (0). Defaults to 0");
+module_param(use_rx_csum, bool, 0444);
+MODULE_PARM_DESC(use_rx_csum, "Determines if RX checksum is done on VEx (1)"
+ " or not (0). Defaults to 1");
+module_param(use_tx_csum, bool, 0444);
+MODULE_PARM_DESC(use_tx_csum, "Determines if TX checksum is done on VEx (1)"
+ " or not (0). Defaults to 1");
+module_param(default_no_path_timeout, uint, 0444);
+MODULE_PARM_DESC(default_no_path_timeout, "Time to wait in milliseconds"
+ " before reconnecting to VEx after connection loss");
+module_param(default_primary_reconnect_timeout, uint, 0444);
+MODULE_PARM_DESC(default_primary_reconnect_timeout, "Time to wait in"
+ " milliseconds before reconnecting the"
+ " primary path to VEx");
+module_param(default_primary_switch_timeout, uint, 0444);
+MODULE_PARM_DESC(default_primary_switch_timeout, "Time to wait before"
+ " switching back to primary path if"
+ " primary path is preferred");
+module_param(sa_path_rec_get_timeout, uint, 0444);
+MODULE_PARM_DESC(sa_path_rec_get_timeout, "Time out value in milliseconds"
+ " for SA path record get queries");
+
+static void config_control_defaults(struct control_config *control_config,
+ struct path_param *params)
+{
+ int len;
+ char *dot;
+ u64 sid;
+
+ sid = (SST_AGN << 56) | (SST_OUI << 32) | (CONTROL_PATH_ID << 8)
+ | IOC_NUMBER(be64_to_cpu(params->ioc_guid));
+
+ control_config->ib_config.service_id = cpu_to_be64(sid);
+ control_config->ib_config.conn_data.path_id = 0;
+ control_config->ib_config.conn_data.vnic_instance = params->instance;
+ control_config->ib_config.conn_data.path_num = 0;
+ dot = strchr(init_utsname()->nodename, '.');
+
+ if (dot)
+ len = dot - init_utsname()->nodename;
+ else
+ len = strlen(init_utsname()->nodename);
+
+ if (len > VNIC_MAX_NODENAME_LEN)
+ len = VNIC_MAX_NODENAME_LEN;
+
+ memcpy(control_config->ib_config.conn_data.nodename,
+ init_utsname()->nodename, len);
+
+ control_config->ib_config.retry_count = RETRY_COUNT;
+ control_config->ib_config.rnr_retry_count = RETRY_COUNT;
+ control_config->ib_config.min_rnr_timer = MIN_RNR_TIMER;
+
+ /* These values are not configurable*/
+ control_config->ib_config.num_recvs = 5;
+ control_config->ib_config.num_sends = 1;
+ control_config->ib_config.recv_scatter = 1;
+ control_config->ib_config.send_gather = 1;
+
+ control_config->num_recvs = control_config->ib_config.num_recvs;
+
+ control_config->vnic_instance = params->instance;
+ control_config->max_address_entries = MAX_ADDRESS_ENTRIES;
+ control_config->min_address_entries = MIN_ADDRESS_ENTRIES;
+ control_config->req_retry_count = CONTROL_REQ_RETRY_COUNT;
+ control_config->rsp_timeout = msecs_to_jiffies(CONTROL_RSP_TIMEOUT);
+}
+
+static void config_data_defaults(struct data_config *data_config,
+ struct path_param *params)
+{
+ u64 sid;
+
+ sid = (SST_AGN << 56) | (SST_OUI << 32) | (DATA_PATH_ID << 8)
+ | IOC_NUMBER(be64_to_cpu(params->ioc_guid));
+
+ data_config->ib_config.service_id = cpu_to_be64(sid);
+ data_config->ib_config.conn_data.path_id = jiffies; /* random */
+ data_config->ib_config.conn_data.vnic_instance = params->instance;
+ data_config->ib_config.conn_data.path_num = 0;
+
+ data_config->ib_config.retry_count = RETRY_COUNT;
+ data_config->ib_config.rnr_retry_count = RETRY_COUNT;
+ data_config->ib_config.min_rnr_timer = MIN_RNR_TIMER;
+
+ /*
+ * NOTE: the num_recvs size assumes that the EIOC could
+ * RDMA enough packets to fill all of the host recv
+ * pool entries, plus send a kick message after each
+ * packet, plus RDMA new buffers for the size of
+ * the EIOC recv buffer pool, plus send kick messages
+ * after each min_host_update_sz of new buffers all
+ * before the host can even pull off the first completed
+ * receive off the completion queue, and repost the
+ * receive. NOT LIKELY!
+ */
+ data_config->ib_config.num_recvs = HOST_RECV_POOL_ENTRIES +
+ (MAX_EIOC_POOL_SZ / MIN_HOST_UPDATE_SZ);
+
+ data_config->ib_config.num_sends = (2 * NOTIFY_BUNDLE_SZ) +
+ (HOST_RECV_POOL_ENTRIES / MIN_EIOC_UPDATE_SZ) + 1;
+
+ data_config->ib_config.recv_scatter = 1; /* not configurable */
+ data_config->ib_config.send_gather = 2; /* not configurable */
+
+ data_config->num_recvs = data_config->ib_config.num_recvs;
+ data_config->path_id = data_config->ib_config.conn_data.path_id;
+
+
+ data_config->host_recv_pool_entries = HOST_RECV_POOL_ENTRIES;
+
+ data_config->host_min.size_recv_pool_entry =
+ cpu_to_be32(BUFFER_SIZE(VLAN_ETH_HLEN + MIN_MTU));
+ data_config->host_max.size_recv_pool_entry =
+ cpu_to_be32(BUFFER_SIZE(VLAN_ETH_HLEN + max_mtu));
+ data_config->eioc_min.size_recv_pool_entry =
+ cpu_to_be32(BUFFER_SIZE(VLAN_ETH_HLEN + MIN_MTU));
+ data_config->eioc_max.size_recv_pool_entry =
+ __constant_cpu_to_be32(MAX_PARAM_VALUE);
+
+ data_config->host_min.num_recv_pool_entries =
+ __constant_cpu_to_be32(MIN_HOST_POOL_SZ);
+ data_config->host_max.num_recv_pool_entries =
+ __constant_cpu_to_be32(MAX_PARAM_VALUE);
+ data_config->eioc_min.num_recv_pool_entries =
+ __constant_cpu_to_be32(MIN_EIOC_POOL_SZ);
+ data_config->eioc_max.num_recv_pool_entries =
+ __constant_cpu_to_be32(MAX_EIOC_POOL_SZ);
+
+ data_config->host_min.timeout_before_kick =
+ __constant_cpu_to_be32(MIN_HOST_KICK_TIMEOUT);
+ data_config->host_max.timeout_before_kick =
+ __constant_cpu_to_be32(MAX_HOST_KICK_TIMEOUT);
+ data_config->eioc_min.timeout_before_kick = 0;
+ data_config->eioc_max.timeout_before_kick =
+ __constant_cpu_to_be32(MAX_PARAM_VALUE);
+
+ data_config->host_min.num_recv_pool_entries_before_kick =
+ __constant_cpu_to_be32(MIN_HOST_KICK_ENTRIES);
+ data_config->host_max.num_recv_pool_entries_before_kick =
+ __constant_cpu_to_be32(MAX_HOST_KICK_ENTRIES);
+ data_config->eioc_min.num_recv_pool_entries_before_kick = 0;
+ data_config->eioc_max.num_recv_pool_entries_before_kick =
+ __constant_cpu_to_be32(MAX_PARAM_VALUE);
+
+ data_config->host_min.num_recv_pool_bytes_before_kick =
+ __constant_cpu_to_be32(MIN_HOST_KICK_BYTES);
+ data_config->host_max.num_recv_pool_bytes_before_kick =
+ __constant_cpu_to_be32(MAX_HOST_KICK_BYTES);
+ data_config->eioc_min.num_recv_pool_bytes_before_kick = 0;
+ data_config->eioc_max.num_recv_pool_bytes_before_kick =
+ __constant_cpu_to_be32(MAX_PARAM_VALUE);
+
+ data_config->host_min.free_recv_pool_entries_per_update =
+ __constant_cpu_to_be32(MIN_HOST_UPDATE_SZ);
+ data_config->host_max.free_recv_pool_entries_per_update =
+ __constant_cpu_to_be32(MAX_HOST_UPDATE_SZ);
+ data_config->eioc_min.free_recv_pool_entries_per_update =
+ __constant_cpu_to_be32(MIN_EIOC_UPDATE_SZ);
+ data_config->eioc_max.free_recv_pool_entries_per_update =
+ __constant_cpu_to_be32(MAX_EIOC_UPDATE_SZ);
+
+ data_config->notify_bundle = NOTIFY_BUNDLE_SZ;
+}
+
+static void config_path_info_defaults(struct viport_config *config,
+ struct path_param *params)
+{
+ int i;
+ ib_get_cached_gid(config->ibdev, config->port, 0,
+ &config->path_info.path.sgid);
+ for (i = 0; i < 16; i++) {
+ config->path_info.path.dgid.raw[i] = params->dgid[i];
+ }
+ config->path_info.path.pkey = params->pkey;
+ config->path_info.path.numb_path = 1;
+ config->sa_path_rec_get_timeout = sa_path_rec_get_timeout;
+
+}
+
+static void config_viport_defaults(struct viport_config *config,
+ struct path_param *params)
+{
+ config->ibdev = params->ibdev;
+ config->port = params->port;
+ config->ioc_guid = params->ioc_guid;
+ config->stats_interval = msecs_to_jiffies(VIPORT_STATS_INTERVAL);
+ config->hb_interval = msecs_to_jiffies(VIPORT_HEARTBEAT_INTERVAL);
+ config->hb_timeout = VIPORT_HEARTBEAT_TIMEOUT * 1000;
+ /*hb_timeout needs to be in usec*/
+ config_path_info_defaults(config, params);
+
+ config_control_defaults(&config->control_config, params);
+ config_data_defaults(&config->data_config, params);
+}
+
+static void config_vnic_defaults(struct vnic_config *config)
+{
+ config->no_path_timeout = msecs_to_jiffies(default_no_path_timeout);
+ config->primary_connect_timeout =
+ msecs_to_jiffies(DEFAULT_PRIMARY_CONNECT_TIMEOUT);
+ config->primary_reconnect_timeout =
+ msecs_to_jiffies(default_primary_reconnect_timeout);
+ config->primary_switch_timeout =
+ msecs_to_jiffies(default_primary_switch_timeout);
+ config->prefer_primary = default_prefer_primary;
+ config->use_rx_csum = use_rx_csum;
+ config->use_tx_csum = use_tx_csum;
+}
+
+struct viport_config *config_alloc_viport(struct path_param *params)
+{
+ struct viport_config *config;
+
+ config = kzalloc(sizeof *config, GFP_KERNEL);
+ if (!config) {
+ CONFIG_ERROR("could not allocate memory for"
+ " struct viport_config\n");
+ return NULL;
+ }
+
+ config_viport_defaults(config, params);
+
+ return config;
+}
+
+struct vnic_config *config_alloc_vnic(void)
+{
+ struct vnic_config *config;
+
+ config = kzalloc(sizeof *config, GFP_KERNEL);
+ if (!config) {
+ CONFIG_ERROR("couldn't allocate memory for"
+ " struct vnic_config\n");
+
+ return NULL;
+ }
+
+ config_vnic_defaults(config);
+ return config;
+}
+
+char *config_viport_name(struct viport_config *config)
+{
+ /* function only called by one thread, can return a static string */
+ static char str[64];
+
+ sprintf(str, "GUID %llx instance %d",
+ be64_to_cpu(config->ioc_guid),
+ config->control_config.vnic_instance);
+ return str;
+}
+
+int config_start(void)
+{
+ max_mtu = min_t(u16, max_mtu, MAX_MTU);
+ max_mtu = max_t(u16, max_mtu, MIN_MTU);
+
+ sa_path_rec_get_timeout = min_t(u32, sa_path_rec_get_timeout,
+ MAX_SA_TIMEOUT);
+ sa_path_rec_get_timeout = max_t(u32, sa_path_rec_get_timeout,
+ MIN_SA_TIMEOUT);
+
+ if (!default_no_path_timeout)
+ default_no_path_timeout = DEFAULT_NO_PATH_TIMEOUT;
+
+ if (!default_primary_reconnect_timeout)
+ default_primary_reconnect_timeout =
+ DEFAULT_PRIMARY_RECONNECT_TIMEOUT;
+
+ if (!default_primary_switch_timeout)
+ default_primary_switch_timeout =
+ DEFAULT_PRIMARY_SWITCH_TIMEOUT;
+
+ return 0;
+
+}
diff --git a/drivers/infiniband/ulp/vnic/vnic_config.h b/drivers/infiniband/ulp/vnic/vnic_config.h
new file mode 100644
index 0000000..c5e63a7
--- /dev/null
+++ b/drivers/infiniband/ulp/vnic/vnic_config.h
@@ -0,0 +1,213 @@
+/*
+ * Copyright (c) 2006 QLogic, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - 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 VNIC_CONFIG_H_INCLUDED
+#define VNIC_CONFIG_H_INCLUDED
+
+#include <rdma/ib_verbs.h>
+#include <linux/types.h>
+#include <linux/if.h>
+
+#include "vnic_control.h"
+#include "vnic_ib.h"
+
+enum {
+ VNIC_CLASS_SUBCLASS = 0x2000066A,
+ VNIC_PROTOCOL = 0,
+ VNIC_PROT_VERSION = 1
+};
+
+enum {
+ MIN_MTU = 1500, /* minimum negotiated MTU size */
+ MAX_MTU = 9500 /* jumbo frame */
+};
+
+/*
+ * TODO: tune the pool parameter values
+ */
+enum {
+ MIN_ADDRESS_ENTRIES = 16,
+ MAX_ADDRESS_ENTRIES = 64
+};
+
+enum {
+ HOST_RECV_POOL_ENTRIES = 512,
+ MIN_HOST_POOL_SZ = 64,
+ MIN_EIOC_POOL_SZ = 64,
+ MAX_EIOC_POOL_SZ = 256,
+ MIN_HOST_UPDATE_SZ = 8,
+ MAX_HOST_UPDATE_SZ = 32,
+ MIN_EIOC_UPDATE_SZ = 8,
+ MAX_EIOC_UPDATE_SZ = 32,
+ NOTIFY_BUNDLE_SZ = 32
+};
+
+enum {
+ MIN_HOST_KICK_TIMEOUT = 10, /* in usec */
+ MAX_HOST_KICK_TIMEOUT = 100 /* in usec */
+};
+
+enum {
+ MIN_HOST_KICK_ENTRIES = 1,
+ MAX_HOST_KICK_ENTRIES = 128
+};
+
+enum {
+ MIN_HOST_KICK_BYTES = 0,
+ MAX_HOST_KICK_BYTES = 5000
+};
+
+enum {
+ DEFAULT_NO_PATH_TIMEOUT = 10000,
+ DEFAULT_PRIMARY_CONNECT_TIMEOUT = 10000,
+ DEFAULT_PRIMARY_RECONNECT_TIMEOUT = 10000,
+ DEFAULT_PRIMARY_SWITCH_TIMEOUT = 10000
+};
+
+enum {
+ VIPORT_STATS_INTERVAL = 500, /* .5 sec */
+ VIPORT_HEARTBEAT_INTERVAL = 1000, /* 1 second */
+ VIPORT_HEARTBEAT_TIMEOUT = 64000 /* 64 sec */
+};
+
+enum {
+ CONTROL_RSP_TIMEOUT = 1000 /* 1 sec */
+};
+
+/* infiniband connection parameters */
+enum {
+ RETRY_COUNT = 3,
+ MIN_RNR_TIMER = 22, /* 20 ms */
+ DEFAULT_PKEY = 0 /* pkey table index */
+};
+
+enum {
+ SA_PATH_REC_GET_TIMEOUT = 1000, /* 1000 ms */
+ MIN_SA_TIMEOUT = 100, /* 100 ms */
+ MAX_SA_TIMEOUT = 20000 /* 20s */
+};
+
+#define MAX_PARAM_VALUE 0x40000000
+#define VNIC_USE_RX_CSUM 1
+#define VNIC_USE_TX_CSUM 1
+#define DEFAULT_PREFER_PRIMARY 0
+#define CONTROL_REQ_RETRY_COUNT 4
+
+struct path_param {
+ __be64 ioc_guid;
+ u8 port;
+ u8 instance;
+ struct ib_device *ibdev;
+ struct vnic_ib_port *ibport;
+ char name[IFNAMSIZ];
+ u8 dgid[16];
+ __be16 pkey;
+ int rx_csum;
+ int tx_csum;
+ int heartbeat;
+};
+
+struct vnic_ib_config {
+ __be64 service_id;
+ struct vnic_connection_data conn_data;
+ u32 retry_count;
+ u32 rnr_retry_count;
+ u8 min_rnr_timer;
+ u32 num_sends;
+ u32 num_recvs;
+ u32 recv_scatter; /* 1 */
+ u32 send_gather; /* 1 or 2 */
+};
+
+struct control_config {
+ struct vnic_ib_config ib_config;
+ u32 num_recvs;
+ u8 vnic_instance;
+ u16 max_address_entries;
+ u16 min_address_entries;
+ u32 rsp_timeout;
+ u8 req_retry_count;
+};
+
+struct data_config {
+ struct vnic_ib_config ib_config;
+ u64 path_id;
+ u32 num_recvs;
+ u32 host_recv_pool_entries;
+ struct vnic_recv_pool_config host_min;
+ struct vnic_recv_pool_config host_max;
+ struct vnic_recv_pool_config eioc_min;
+ struct vnic_recv_pool_config eioc_max;
+ u32 notify_bundle;
+};
+
+struct viport_config {
+ struct viport *viport;
+ struct control_config control_config;
+ struct data_config data_config;
+ struct vnic_ib_path_info path_info;
+ u32 sa_path_rec_get_timeout;
+ struct ib_device *ibdev;
+ u32 port;
+ u32 stats_interval;
+ u32 hb_interval;
+ u32 hb_timeout;
+ __be64 ioc_guid;
+ size_t path_idx;
+};
+
+/*
+ * primary_connect_timeout - if the secondary connects first,
+ * how long do we give the primary?
+ * primary_reconnect_timeout - same as above, but used when recovering
+ * from the case where both paths fail
+ * primary_switch_timeout - how long do we wait before switching to the
+ * primary when it comes back?
+ */
+struct vnic_config {
+ struct vnic *vnic;
+ char name[IFNAMSIZ];
+ u32 no_path_timeout;
+ u32 primary_connect_timeout;
+ u32 primary_reconnect_timeout;
+ u32 primary_switch_timeout;
+ int prefer_primary;
+ int use_rx_csum;
+ int use_tx_csum;
+};
+
+int config_start(void);
+struct viport_config *config_alloc_viport(struct path_param *params);
+struct vnic_config *config_alloc_vnic(void);
+char *config_viport_name(struct viport_config *config);
+
+#endif /* VNIC_CONFIG_H_INCLUDED */
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