From: Julian Wiedmann <jwi@linux.ibm.com>
Subject: s390/qeth: remove duplicated device matching
Patch-mainline: v4.15-rc1
Git-commit: ed2e93efc3b8d34ba36b0f7b581f3828916a1da7
References: FATE#326350, LTC#169511, bsc#1113509
Summary: qeth: performance improvements
Description: This adds recent functional and performance improvements for the
qeth network driver.
Primarily this brings Scatter-Gather support for HiperSockets,
reduced CPU consumption in the L3 IPv4 transmit path for OSA,
improved Promiscuous Mode performance due to IFF_UNICAST_FLT,
support for Scatter-Gather on z/VM virtual NICs, and
support for delayed GRO flushing.
For sanity & stability reasons, this effectively constitutes a
backport of the qeth device driver from 4.19 mainline.
Upstream-Description:
s390/qeth: remove duplicated device matching
With commit "s390/ccwgroup: tie a ccwgroup driver to its ccw driver",
the ccwgroup core now ensures that a qeth group device only consists of
ccw devices which are supported by qeth. Therefore remove qeth's
internal device matching, and use .driver_info to determine the card
type.
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/s390/net/qeth_core.h | 14 -------------
drivers/s390/net/qeth_core_main.c | 40 +++++++-------------------------------
drivers/s390/net/qeth_core_mpc.h | 1
drivers/s390/net/qeth_core_sys.c | 4 ---
4 files changed, 9 insertions(+), 50 deletions(-)
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -231,20 +231,6 @@ static inline int qeth_is_ipa_enabled(st
#define QETH_IDX_FUNC_LEVEL_OSD 0x0101
#define QETH_IDX_FUNC_LEVEL_IQD 0x4108
-#define QETH_MODELLIST_ARRAY \
- {{0x1731, 0x01, 0x1732, QETH_CARD_TYPE_OSD, QETH_MAX_QUEUES, 0}, \
- {0x1731, 0x05, 0x1732, QETH_CARD_TYPE_IQD, QETH_MAX_QUEUES, 0x103}, \
- {0x1731, 0x06, 0x1732, QETH_CARD_TYPE_OSN, QETH_MAX_QUEUES, 0}, \
- {0x1731, 0x02, 0x1732, QETH_CARD_TYPE_OSM, QETH_MAX_QUEUES, 0}, \
- {0x1731, 0x02, 0x1732, QETH_CARD_TYPE_OSX, QETH_MAX_QUEUES, 0}, \
- {0, 0, 0, 0, 0, 0} }
-#define QETH_CU_TYPE_IND 0
-#define QETH_CU_MODEL_IND 1
-#define QETH_DEV_TYPE_IND 2
-#define QETH_DEV_MODEL_IND 3
-#define QETH_QUEUE_NO_IND 4
-#define QETH_MULTICAST_IND 5
-
#define QETH_REAL_CARD 1
#define QETH_VLAN_CARD 2
#define QETH_BUFSIZE 4096
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -58,7 +58,6 @@ EXPORT_SYMBOL_GPL(qeth_core_header_cache
static struct kmem_cache *qeth_qdio_outbuf_cache;
static struct device *qeth_core_root_dev;
-static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
static struct lock_class_key qdio_out_skb_queue_key;
static struct mutex qeth_mod_mutex;
@@ -1409,6 +1408,7 @@ static void qeth_init_qdio_info(struct q
QETH_DBF_TEXT(SETUP, 4, "intqdinf");
atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
/* inbound */
+ card->qdio.no_in_queues = 1;
card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
if (card->info.type == QETH_CARD_TYPE_IQD)
card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
@@ -1542,34 +1542,17 @@ out:
return NULL;
}
-static int qeth_determine_card_type(struct qeth_card *card)
+static void qeth_determine_card_type(struct qeth_card *card)
{
- int i = 0;
-
QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
- while (known_devices[i][QETH_DEV_MODEL_IND]) {
- if ((CARD_RDEV(card)->id.dev_type ==
- known_devices[i][QETH_DEV_TYPE_IND]) &&
- (CARD_RDEV(card)->id.dev_model ==
- known_devices[i][QETH_DEV_MODEL_IND])) {
- card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
- card->qdio.no_out_queues =
- known_devices[i][QETH_QUEUE_NO_IND];
- card->qdio.no_in_queues = 1;
- card->info.is_multicast_different =
- known_devices[i][QETH_MULTICAST_IND];
- qeth_update_from_chp_desc(card);
- return 0;
- }
- i++;
- }
- card->info.type = QETH_CARD_TYPE_UNKNOWN;
- dev_err(&card->gdev->dev, "The adapter hardware is of an "
- "unknown type\n");
- return -ENOENT;
+ card->info.type = CARD_RDEV(card)->id.driver_info;
+ card->qdio.no_out_queues = QETH_MAX_QUEUES;
+ if (card->info.type == QETH_CARD_TYPE_IQD)
+ card->info.is_multicast_different = 0x0103;
+ qeth_update_from_chp_desc(card);
}
static int qeth_clear_channel(struct qeth_channel *channel)
@@ -2257,8 +2240,6 @@ static int qeth_cm_setup(struct qeth_car
static int qeth_get_initial_mtu_for_card(struct qeth_card *card)
{
switch (card->info.type) {
- case QETH_CARD_TYPE_UNKNOWN:
- return 1500;
case QETH_CARD_TYPE_IQD:
return card->info.max_mtu;
case QETH_CARD_TYPE_OSD:
@@ -2303,7 +2284,6 @@ static int qeth_mtu_is_valid(struct qeth
return ((mtu >= 576) &&
(mtu <= card->info.max_mtu));
case QETH_CARD_TYPE_OSN:
- case QETH_CARD_TYPE_UNKNOWN:
default:
return 1;
}
@@ -5748,11 +5728,7 @@ static int qeth_core_probe_device(struct
gdev->cdev[1]->handler = qeth_irq;
gdev->cdev[2]->handler = qeth_irq;
- rc = qeth_determine_card_type(card);
- if (rc) {
- QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
- goto err_card;
- }
+ qeth_determine_card_type(card);
rc = qeth_setup_card(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
--- a/drivers/s390/net/qeth_core_mpc.h
+++ b/drivers/s390/net/qeth_core_mpc.h
@@ -44,7 +44,6 @@ extern unsigned char IPA_PDU_HEADER[];
#define IPA_CMD_PRIM_VERSION_NO 0x01
enum qeth_card_types {
- QETH_CARD_TYPE_UNKNOWN = 0,
QETH_CARD_TYPE_OSD = 1,
QETH_CARD_TYPE_IQD = 5,
QETH_CARD_TYPE_OSN = 6,
--- a/drivers/s390/net/qeth_core_sys.c
+++ b/drivers/s390/net/qeth_core_sys.c
@@ -475,10 +475,8 @@ static ssize_t qeth_dev_isolation_store(
return -EINVAL;
mutex_lock(&card->conf_mutex);
- /* check for unknown, too, in case we do not yet know who we are */
if (card->info.type != QETH_CARD_TYPE_OSD &&
- card->info.type != QETH_CARD_TYPE_OSX &&
- card->info.type != QETH_CARD_TYPE_UNKNOWN) {
+ card->info.type != QETH_CARD_TYPE_OSX) {
rc = -EOPNOTSUPP;
dev_err(&card->gdev->dev, "Adapter does not "
"support QDIO data connection isolation\n");