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![Julian Wiedmann](/assets/img/avatar_default.png)
Error propagation from cmd callbacks currently works in a way where
qeth_send_control_data_cb() picks the raw HW code from the response,
and the cmd's originator later translates this into an errno.
The callback itself only returns 0 ("done") or 1 ("expect more data").
This is
1. limiting, as the only means for the callback to report an internal
error is to invent pseudo HW codes (such as IPA_RC_ENOMEM), that
the originator then needs to understand. For non-IPA callbacks, we
even provide a separate field in the IO buffer metadata (iob->rc) so
the callback can pass back a return value.
2. fragile, as the originator must take care to not translate any errno
that is returned by qeth's own IO code paths (eg -ENOMEM). Also, any
originator that forgets to translate the HW codes potentially passes
garbage back to its caller. For instance, see
commit 2aa4867198
("s390/qeth: translate SETVLAN/DELVLAN errors").
Introduce a new model where all HW error translation is done within the
callback, and the callback returns
> 0, if it expects more data (as before)
== 0, on success
< 0, with an errno
Start off with converting all callbacks to the new model that either
a) pass back pseudo HW codes, or b) have a dependency on a specific
HW error code. Also convert c) the one callback that uses iob->rc, and
d) qeth_setadpparms_change_macaddr_cb() so that it can pass back an
error back to qeth_l2_request_initial_mac() even when the cmd itself
was successful.
The old model remains supported: if the callback returns 0, we still
propagate the response's HW error code back to the originator.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
264 lines
9.8 KiB
C
264 lines
9.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright IBM Corp. 2007
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* Author(s): Frank Pavlic <fpavlic@de.ibm.com>,
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* Thomas Spatzier <tspat@de.ibm.com>,
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* Frank Blaschka <frank.blaschka@de.ibm.com>
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*/
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#include <linux/module.h>
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#include <asm/cio.h>
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#include "qeth_core_mpc.h"
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unsigned char IDX_ACTIVATE_READ[] = {
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0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x19, 0x01, 0x01, 0x80, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc8, 0xc1,
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0xd3, 0xd3, 0xd6, 0xd3, 0xc5, 0x40, 0x00, 0x00,
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0x00, 0x00
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};
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unsigned char IDX_ACTIVATE_WRITE[] = {
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0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x15, 0x01, 0x01, 0x80, 0x00, 0x00, 0x00, 0x00,
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0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xc8, 0xc1,
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0xd3, 0xd3, 0xd6, 0xd3, 0xc5, 0x40, 0x00, 0x00,
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0x00, 0x00
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};
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unsigned char CM_ENABLE[] = {
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0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x63,
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0x10, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00,
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0x81, 0x7e, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x00, 0x23,
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0x00, 0x00, 0x23, 0x05, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x01, 0x00, 0x00, 0x23, 0x00, 0x00, 0x00, 0x40,
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0x00, 0x0c, 0x41, 0x02, 0x00, 0x17, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x0b, 0x04, 0x01,
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0x7e, 0x04, 0x05, 0x00, 0x01, 0x01, 0x0f,
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0x00,
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0x0c, 0x04, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff
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};
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unsigned char CM_SETUP[] = {
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0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x64,
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0x10, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00,
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0x81, 0x7e, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x00, 0x24,
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0x00, 0x00, 0x24, 0x05, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x01, 0x00, 0x00, 0x24, 0x00, 0x00, 0x00, 0x40,
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0x00, 0x0c, 0x41, 0x04, 0x00, 0x18, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x09, 0x04, 0x04,
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0x05, 0x00, 0x01, 0x01, 0x11,
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0x00, 0x09, 0x04,
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0x05, 0x05, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x06,
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0x04, 0x06, 0xc8, 0x00
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};
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unsigned char ULP_ENABLE[] = {
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0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03,
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0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x6b,
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0x10, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00,
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0x41, 0x7e, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x00, 0x2b,
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0x00, 0x00, 0x2b, 0x05, 0x20, 0x01, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x01, 0x00, 0x00, 0x2b, 0x00, 0x00, 0x00, 0x40,
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0x00, 0x0c, 0x41, 0x02, 0x00, 0x1f, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x0b, 0x04, 0x01,
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0x03, 0x04, 0x05, 0x00, 0x01, 0x01, 0x12,
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0x00,
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0x14, 0x04, 0x0a, 0x00, 0x20, 0x00, 0x00, 0xff,
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0xff, 0x00, 0x08, 0xc8, 0xe8, 0xc4, 0xf1, 0xc7,
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0xf1, 0x00, 0x00
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};
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unsigned char ULP_SETUP[] = {
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0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04,
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0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x6c,
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0x10, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00,
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0x41, 0x7e, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x01, 0x00, 0x24, 0x00, 0x2c,
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0x00, 0x00, 0x2c, 0x05, 0x20, 0x01, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x01, 0x00, 0x00, 0x2c, 0x00, 0x00, 0x00, 0x40,
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0x00, 0x0c, 0x41, 0x04, 0x00, 0x20, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x09, 0x04, 0x04,
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0x05, 0x00, 0x01, 0x01, 0x14,
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0x00, 0x09, 0x04,
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0x05, 0x05, 0x30, 0x01, 0x00, 0x00,
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0x00, 0x06,
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0x04, 0x06, 0x40, 0x00,
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0x00, 0x08, 0x04, 0x0b,
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0x00, 0x00, 0x00, 0x00
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};
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unsigned char DM_ACT[] = {
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0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05,
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0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x55,
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0x10, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00,
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0x41, 0x7e, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03,
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0x00, 0x00, 0x00, 0x02, 0x00, 0x24, 0x00, 0x15,
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0x00, 0x00, 0x2c, 0x05, 0x20, 0x01, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x01, 0x00, 0x00, 0x15, 0x00, 0x00, 0x00, 0x40,
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0x00, 0x0c, 0x43, 0x60, 0x00, 0x09, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x09, 0x04, 0x04,
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0x05, 0x40, 0x01, 0x01, 0x00
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};
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unsigned char IPA_PDU_HEADER[] = {
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0x00, 0xe0, 0x00, 0x00, 0x77, 0x77, 0x77, 0x77,
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0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00,
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0x10, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
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0xc1, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x05, 0x77, 0x77, 0x77, 0x77,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40,
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};
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struct ipa_rc_msg {
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enum qeth_ipa_return_codes rc;
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const char *msg;
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};
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static const struct ipa_rc_msg qeth_ipa_rc_msg[] = {
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{IPA_RC_SUCCESS, "success"},
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{IPA_RC_NOTSUPP, "Command not supported"},
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{IPA_RC_IP_TABLE_FULL, "Add Addr IP Table Full - ipv6"},
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{IPA_RC_UNKNOWN_ERROR, "IPA command failed - reason unknown"},
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{IPA_RC_UNSUPPORTED_COMMAND, "Command not supported"},
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{IPA_RC_VNICC_OOSEQ, "Command issued out of sequence"},
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{IPA_RC_INVALID_FORMAT, "invalid format or length"},
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{IPA_RC_DUP_IPV6_REMOTE, "ipv6 address already registered remote"},
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{IPA_RC_SBP_IQD_NOT_CONFIGURED, "Not configured for bridgeport"},
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{IPA_RC_DUP_IPV6_HOME, "ipv6 address already registered"},
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{IPA_RC_UNREGISTERED_ADDR, "Address not registered"},
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{IPA_RC_NO_ID_AVAILABLE, "No identifiers available"},
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{IPA_RC_ID_NOT_FOUND, "Identifier not found"},
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{IPA_RC_SBP_IQD_ANO_DEV_PRIMARY, "Primary bridgeport exists already"},
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{IPA_RC_SBP_IQD_CURRENT_SECOND, "Bridgeport is currently secondary"},
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{IPA_RC_SBP_IQD_LIMIT_SECOND, "Limit of secondary bridgeports reached"},
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{IPA_RC_INVALID_IP_VERSION, "IP version incorrect"},
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{IPA_RC_SBP_IQD_CURRENT_PRIMARY, "Bridgeport is currently primary"},
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{IPA_RC_LAN_FRAME_MISMATCH, "LAN and frame mismatch"},
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{IPA_RC_SBP_IQD_NO_QDIO_QUEUES, "QDIO queues not established"},
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{IPA_RC_L2_UNSUPPORTED_CMD, "Unsupported layer 2 command"},
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{IPA_RC_L2_DUP_MAC, "Duplicate MAC address"},
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{IPA_RC_L2_ADDR_TABLE_FULL, "Layer2 address table full"},
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{IPA_RC_L2_DUP_LAYER3_MAC, "Duplicate with layer 3 MAC"},
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{IPA_RC_L2_GMAC_NOT_FOUND, "GMAC not found"},
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{IPA_RC_L2_MAC_NOT_AUTH_BY_HYP, "L2 mac not authorized by hypervisor"},
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{IPA_RC_L2_MAC_NOT_AUTH_BY_ADP, "L2 mac not authorized by adapter"},
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{IPA_RC_L2_MAC_NOT_FOUND, "L2 mac address not found"},
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{IPA_RC_L2_INVALID_VLAN_ID, "L2 invalid vlan id"},
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{IPA_RC_L2_DUP_VLAN_ID, "L2 duplicate vlan id"},
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{IPA_RC_L2_VLAN_ID_NOT_FOUND, "L2 vlan id not found"},
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{IPA_RC_VNICC_VNICBP, "VNIC is BridgePort"},
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{IPA_RC_SBP_OSA_NOT_CONFIGURED, "Not configured for bridgeport"},
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{IPA_RC_SBP_OSA_OS_MISMATCH, "OS mismatch"},
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{IPA_RC_SBP_OSA_ANO_DEV_PRIMARY, "Primary bridgeport exists already"},
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{IPA_RC_SBP_OSA_CURRENT_SECOND, "Bridgeport is currently secondary"},
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{IPA_RC_SBP_OSA_LIMIT_SECOND, "Limit of secondary bridgeports reached"},
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{IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN, "Not authorized by zManager"},
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{IPA_RC_SBP_OSA_CURRENT_PRIMARY, "Bridgeport is currently primary"},
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{IPA_RC_SBP_OSA_NO_QDIO_QUEUES, "QDIO queues not established"},
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{IPA_RC_DATA_MISMATCH, "Data field mismatch (v4/v6 mixed)"},
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{IPA_RC_INVALID_MTU_SIZE, "Invalid MTU size"},
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{IPA_RC_INVALID_LANTYPE, "Invalid LAN type"},
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{IPA_RC_INVALID_LANNUM, "Invalid LAN num"},
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{IPA_RC_DUPLICATE_IP_ADDRESS, "Address already registered"},
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{IPA_RC_IP_ADDR_TABLE_FULL, "IP address table full"},
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{IPA_RC_LAN_PORT_STATE_ERROR, "LAN port state error"},
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{IPA_RC_SETIP_NO_STARTLAN, "Setip no startlan received"},
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{IPA_RC_SETIP_ALREADY_RECEIVED, "Setip already received"},
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{IPA_RC_IP_ADDR_ALREADY_USED, "IP address already in use on LAN"},
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{IPA_RC_MC_ADDR_NOT_FOUND, "Multicast address not found"},
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{IPA_RC_SETIP_INVALID_VERSION, "SETIP invalid IP version"},
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{IPA_RC_UNSUPPORTED_SUBCMD, "Unsupported assist subcommand"},
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{IPA_RC_ARP_ASSIST_NO_ENABLE, "Only partial success, no enable"},
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{IPA_RC_PRIMARY_ALREADY_DEFINED, "Primary already defined"},
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{IPA_RC_SECOND_ALREADY_DEFINED, "Secondary already defined"},
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{IPA_RC_INVALID_SETRTG_INDICATOR, "Invalid SETRTG indicator"},
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{IPA_RC_MC_ADDR_ALREADY_DEFINED, "Multicast address already defined"},
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{IPA_RC_LAN_OFFLINE, "STRTLAN_LAN_DISABLED - LAN offline"},
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{IPA_RC_VEPA_TO_VEB_TRANSITION, "Adj. switch disabled port mode RR"},
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{IPA_RC_INVALID_IP_VERSION2, "Invalid IP version"},
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/* default for qeth_get_ipa_msg(): */
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{IPA_RC_FFFF, "Unknown Error"}
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};
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const char *qeth_get_ipa_msg(enum qeth_ipa_return_codes rc)
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{
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int x;
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for (x = 0; x < ARRAY_SIZE(qeth_ipa_rc_msg) - 1; x++)
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if (qeth_ipa_rc_msg[x].rc == rc)
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return qeth_ipa_rc_msg[x].msg;
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return qeth_ipa_rc_msg[x].msg;
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}
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struct ipa_cmd_names {
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enum qeth_ipa_cmds cmd;
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const char *name;
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};
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static const struct ipa_cmd_names qeth_ipa_cmd_names[] = {
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{IPA_CMD_STARTLAN, "startlan"},
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{IPA_CMD_STOPLAN, "stoplan"},
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{IPA_CMD_SETVMAC, "setvmac"},
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{IPA_CMD_DELVMAC, "delvmac"},
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{IPA_CMD_SETGMAC, "setgmac"},
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{IPA_CMD_DELGMAC, "delgmac"},
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{IPA_CMD_SETVLAN, "setvlan"},
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{IPA_CMD_DELVLAN, "delvlan"},
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{IPA_CMD_VNICC, "vnic_characteristics"},
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{IPA_CMD_SETBRIDGEPORT_OSA, "set_bridge_port(osa)"},
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{IPA_CMD_SETCCID, "setccid"},
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{IPA_CMD_DELCCID, "delccid"},
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{IPA_CMD_MODCCID, "modccid"},
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{IPA_CMD_SETIP, "setip"},
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{IPA_CMD_QIPASSIST, "qipassist"},
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{IPA_CMD_SETASSPARMS, "setassparms"},
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{IPA_CMD_SETIPM, "setipm"},
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{IPA_CMD_DELIPM, "delipm"},
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{IPA_CMD_SETRTG, "setrtg"},
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{IPA_CMD_DELIP, "delip"},
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{IPA_CMD_SETADAPTERPARMS, "setadapterparms"},
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{IPA_CMD_SET_DIAG_ASS, "set_diag_ass"},
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{IPA_CMD_SETBRIDGEPORT_IQD, "set_bridge_port(hs)"},
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{IPA_CMD_CREATE_ADDR, "create_addr"},
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{IPA_CMD_DESTROY_ADDR, "destroy_addr"},
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{IPA_CMD_REGISTER_LOCAL_ADDR, "register_local_addr"},
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{IPA_CMD_UNREGISTER_LOCAL_ADDR, "unregister_local_addr"},
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{IPA_CMD_ADDRESS_CHANGE_NOTIF, "address_change_notification"},
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{IPA_CMD_UNKNOWN, "unknown"},
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};
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const char *qeth_get_ipa_cmd_name(enum qeth_ipa_cmds cmd)
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{
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int x;
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for (x = 0; x < ARRAY_SIZE(qeth_ipa_cmd_names) - 1; x++)
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if (qeth_ipa_cmd_names[x].cmd == cmd)
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return qeth_ipa_cmd_names[x].name;
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return qeth_ipa_cmd_names[x].name;
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}
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