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List: linux-s390
Subject: [PATCH net-next 02/12] s390/qeth: clarify parameter for simple assist cmds
From: Julian Wiedmann <jwi () linux ! ibm ! com>
Date: 2019-06-27 15:01:23
Message-ID: 20190627150133.58746-3-jwi () linux ! ibm ! com
[Download RAW message or body]
For code that uses qeth_send_simple_setassparms_prot(), we currently
can't differentiate whether the cmd should contain (1) no parameter, or
(2) a 4-byte parameter with value 0.
At the moment this doesn't cause any trouble. But when using dynamically
allocated cmds, we need to know whether to allocate & transmit an
additional 4 bytes of zeroes.
So instead of the raw parameter value, pass a parameter pointer
(or NULL) to qeth_send_simple_setassparms_prot().
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
---
drivers/s390/net/qeth_core.h | 6 +++---
drivers/s390/net/qeth_core_main.c | 15 +++++++--------
drivers/s390/net/qeth_core_mpc.h | 2 ++
drivers/s390/net/qeth_l3_main.c | 26 ++++++++++++++------------
4 files changed, 26 insertions(+), 23 deletions(-)
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index 42aa4a21a4c2..35d7b43f6580 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -940,12 +940,12 @@ static inline int qeth_is_diagass_supported(struct qeth_card *card,
int qeth_send_simple_setassparms_prot(struct qeth_card *card,
enum qeth_ipa_funcs ipa_func,
- u16 cmd_code, long data,
+ u16 cmd_code, u32 *data,
enum qeth_prot_versions prot);
/* IPv4 variant */
static inline int qeth_send_simple_setassparms(struct qeth_card *card,
enum qeth_ipa_funcs ipa_func,
- u16 cmd_code, long data)
+ u16 cmd_code, u32 *data)
{
return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
data, QETH_PROT_IPV4);
@@ -953,7 +953,7 @@ static inline int qeth_send_simple_setassparms(struct qeth_card *card,
static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card,
enum qeth_ipa_funcs ipa_func,
- u16 cmd_code, long data)
+ u16 cmd_code, u32 *data)
{
return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
data, QETH_PROT_IPV6);
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 84ed772bbfbd..3ba91b1c1315 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -5355,20 +5355,19 @@ EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
int qeth_send_simple_setassparms_prot(struct qeth_card *card,
enum qeth_ipa_funcs ipa_func,
- u16 cmd_code, long data,
+ u16 cmd_code, u32 *data,
enum qeth_prot_versions prot)
{
- int length = 0;
+ unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
struct qeth_cmd_buffer *iob;
QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
- if (data)
- length = sizeof(__u32);
iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
if (!iob)
return -ENOMEM;
- __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (__u32) data;
+ if (data)
+ __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
}
EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
@@ -5885,8 +5884,8 @@ static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
enum qeth_prot_versions prot)
{
- return qeth_send_simple_setassparms_prot(card, cstype,
- IPA_CMD_ASS_STOP, 0, prot);
+ return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
+ NULL, prot);
}
static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
@@ -5974,7 +5973,7 @@ static int qeth_set_tso_off(struct qeth_card *card,
enum qeth_prot_versions prot)
{
return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
- IPA_CMD_ASS_STOP, 0, prot);
+ IPA_CMD_ASS_STOP, NULL, prot);
}
static int qeth_set_tso_on(struct qeth_card *card,
diff --git a/drivers/s390/net/qeth_core_mpc.h b/drivers/s390/net/qeth_core_mpc.h
index e84249f8803e..61fc4005dd53 100644
--- a/drivers/s390/net/qeth_core_mpc.h
+++ b/drivers/s390/net/qeth_core_mpc.h
@@ -437,6 +437,8 @@ struct qeth_ipacmd_setassparms {
} data;
} __attribute__ ((packed));
+#define SETASS_DATA_SIZEOF(field) FIELD_SIZEOF(struct qeth_ipacmd_setassparms,\
+ data.field)
/* SETRTG IPA Command: ****************************************************/
struct qeth_set_routing {
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 81312be8a36b..3de71ed54e92 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -770,7 +770,7 @@ static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
return 0;
}
rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
- IPA_CMD_ASS_START, 0);
+ IPA_CMD_ASS_START, NULL);
if (rc) {
dev_warn(&card->gdev->dev,
"Starting ARP processing support for %s failed\n",
@@ -793,7 +793,7 @@ static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
}
rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
- IPA_CMD_ASS_START, 0);
+ IPA_CMD_ASS_START, NULL);
if (rc)
dev_warn(&card->gdev->dev,
"Starting source MAC-address support for %s failed\n",
@@ -814,7 +814,7 @@ static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
}
rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
- IPA_CMD_ASS_START, 0);
+ IPA_CMD_ASS_START, NULL);
if (rc) {
dev_warn(&card->gdev->dev,
"Starting VLAN support for %s failed\n",
@@ -839,7 +839,7 @@ static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
}
rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
- IPA_CMD_ASS_START, 0);
+ IPA_CMD_ASS_START, NULL);
if (rc) {
dev_warn(&card->gdev->dev,
"Starting multicast support for %s failed\n",
@@ -853,6 +853,7 @@ static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
{
+ u32 ipv6_data = 3;
int rc;
QETH_CARD_TEXT(card, 3, "softipv6");
@@ -860,16 +861,16 @@ static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
if (IS_IQD(card))
goto out;
- rc = qeth_send_simple_setassparms(card, IPA_IPV6,
- IPA_CMD_ASS_START, 3);
+ rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START,
+ &ipv6_data);
if (rc) {
dev_err(&card->gdev->dev,
"Activating IPv6 support for %s failed\n",
QETH_CARD_IFNAME(card));
return rc;
}
- rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6,
- IPA_CMD_ASS_START, 0);
+ rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START,
+ NULL);
if (rc) {
dev_err(&card->gdev->dev,
"Activating IPv6 support for %s failed\n",
@@ -877,7 +878,7 @@ static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
return rc;
}
rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
- IPA_CMD_ASS_START, 0);
+ IPA_CMD_ASS_START, NULL);
if (rc) {
dev_warn(&card->gdev->dev,
"Enabling the passthrough mode for %s failed\n",
@@ -903,6 +904,7 @@ static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
{
+ u32 filter_data = 1;
int rc;
QETH_CARD_TEXT(card, 3, "stbrdcst");
@@ -915,7 +917,7 @@ static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
goto out;
}
rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
- IPA_CMD_ASS_START, 0);
+ IPA_CMD_ASS_START, NULL);
if (rc) {
dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
"%s failed\n", QETH_CARD_IFNAME(card));
@@ -923,7 +925,7 @@ static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
}
rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
- IPA_CMD_ASS_CONFIGURE, 1);
+ IPA_CMD_ASS_CONFIGURE, &filter_data);
if (rc) {
dev_warn(&card->gdev->dev,
"Setting up broadcast filtering for %s failed\n",
@@ -933,7 +935,7 @@ static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
dev_info(&card->gdev->dev, "Broadcast enabled\n");
rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
- IPA_CMD_ASS_ENABLE, 1);
+ IPA_CMD_ASS_ENABLE, &filter_data);
if (rc) {
dev_warn(&card->gdev->dev, "Setting up broadcast echo "
"filtering for %s failed\n", QETH_CARD_IFNAME(card));
--
2.17.1
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