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s390/qeth: clarify parameter for simple assist cmds

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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>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann
2019-06-27 17:01:23 +02:00
committed by David S. Miller
parent a59d121da2
commit 1c696c896f
4 changed files with 26 additions and 23 deletions
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2
drivers/s390/net/qeth_core_mpc.h
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@@ -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 {