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linux/drivers/nvme/host/trace.c
Hannes Reinecke f50fff73d6 nvme: implement In-Band authentication 
Implement NVMe-oF In-Band authentication according to NVMe TPAR 8006.
This patch adds two new fabric options 'dhchap_secret' to specify the
pre-shared key (in ASCII respresentation according to NVMe 2.0 section
8.13.5.8 'Secret representation') and 'dhchap_ctrl_secret' to specify
the pre-shared controller key for bi-directional authentication of both
the host and the controller.
Re-authentication can be triggered by writing the PSK into the new
controller sysfs attribute 'dhchap_secret' or 'dhchap_ctrl_secret'.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
[axboe: fold in clang build fix]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-08-02 17:14:49 -06:00

358 lines
9.0 KiB
C
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// SPDX-License-Identifier: GPL-2.0
/*
* NVM Express device driver tracepoints
* Copyright (c) 2018 Johannes Thumshirn, SUSE Linux GmbH
*/
#include <asm/unaligned.h>
#include "trace.h"
static const char *nvme_trace_delete_sq(struct trace_seq *p, u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
u16 sqid = get_unaligned_le16(cdw10);
trace_seq_printf(p, "sqid=%u", sqid);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_create_sq(struct trace_seq *p, u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
u16 sqid = get_unaligned_le16(cdw10);
u16 qsize = get_unaligned_le16(cdw10 + 2);
u16 sq_flags = get_unaligned_le16(cdw10 + 4);
u16 cqid = get_unaligned_le16(cdw10 + 6);
trace_seq_printf(p, "sqid=%u, qsize=%u, sq_flags=0x%x, cqid=%u",
sqid, qsize, sq_flags, cqid);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_delete_cq(struct trace_seq *p, u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
u16 cqid = get_unaligned_le16(cdw10);
trace_seq_printf(p, "cqid=%u", cqid);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_create_cq(struct trace_seq *p, u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
u16 cqid = get_unaligned_le16(cdw10);
u16 qsize = get_unaligned_le16(cdw10 + 2);
u16 cq_flags = get_unaligned_le16(cdw10 + 4);
u16 irq_vector = get_unaligned_le16(cdw10 + 6);
trace_seq_printf(p, "cqid=%u, qsize=%u, cq_flags=0x%x, irq_vector=%u",
cqid, qsize, cq_flags, irq_vector);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_admin_identify(struct trace_seq *p, u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
u8 cns = cdw10[0];
u16 ctrlid = get_unaligned_le16(cdw10 + 2);
trace_seq_printf(p, "cns=%u, ctrlid=%u", cns, ctrlid);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_admin_set_features(struct trace_seq *p,
u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
u8 fid = cdw10[0];
u8 sv = cdw10[3] & 0x8;
u32 cdw11 = get_unaligned_le32(cdw10 + 4);
trace_seq_printf(p, "fid=0x%x, sv=0x%x, cdw11=0x%x", fid, sv, cdw11);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_admin_get_features(struct trace_seq *p,
u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
u8 fid = cdw10[0];
u8 sel = cdw10[1] & 0x7;
u32 cdw11 = get_unaligned_le32(cdw10 + 4);
trace_seq_printf(p, "fid=0x%x, sel=0x%x, cdw11=0x%x", fid, sel, cdw11);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_get_lba_status(struct trace_seq *p,
u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
u64 slba = get_unaligned_le64(cdw10);
u32 mndw = get_unaligned_le32(cdw10 + 8);
u16 rl = get_unaligned_le16(cdw10 + 12);
u8 atype = cdw10[15];
trace_seq_printf(p, "slba=0x%llx, mndw=0x%x, rl=0x%x, atype=%u",
slba, mndw, rl, atype);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_admin_format_nvm(struct trace_seq *p, u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
u8 lbaf = cdw10[0] & 0xF;
u8 mset = (cdw10[0] >> 4) & 0x1;
u8 pi = (cdw10[0] >> 5) & 0x7;
u8 pil = cdw10[1] & 0x1;
u8 ses = (cdw10[1] >> 1) & 0x7;
trace_seq_printf(p, "lbaf=%u, mset=%u, pi=%u, pil=%u, ses=%u",
lbaf, mset, pi, pil, ses);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_read_write(struct trace_seq *p, u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
u64 slba = get_unaligned_le64(cdw10);
u16 length = get_unaligned_le16(cdw10 + 8);
u16 control = get_unaligned_le16(cdw10 + 10);
u32 dsmgmt = get_unaligned_le32(cdw10 + 12);
u32 reftag = get_unaligned_le32(cdw10 + 16);
trace_seq_printf(p,
"slba=%llu, len=%u, ctrl=0x%x, dsmgmt=%u, reftag=%u",
slba, length, control, dsmgmt, reftag);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_dsm(struct trace_seq *p, u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
trace_seq_printf(p, "nr=%u, attributes=%u",
get_unaligned_le32(cdw10),
get_unaligned_le32(cdw10 + 4));
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_zone_mgmt_send(struct trace_seq *p, u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
u64 slba = get_unaligned_le64(cdw10);
u8 zsa = cdw10[12];
u8 all = cdw10[13];
trace_seq_printf(p, "slba=%llu, zsa=%u, all=%u", slba, zsa, all);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_zone_mgmt_recv(struct trace_seq *p, u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
u64 slba = get_unaligned_le64(cdw10);
u32 numd = get_unaligned_le32(cdw10 + 8);
u8 zra = cdw10[12];
u8 zrasf = cdw10[13];
u8 pr = cdw10[14];
trace_seq_printf(p, "slba=%llu, numd=%u, zra=%u, zrasf=%u, pr=%u",
slba, numd, zra, zrasf, pr);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_common(struct trace_seq *p, u8 *cdw10)
{
const char *ret = trace_seq_buffer_ptr(p);
trace_seq_printf(p, "cdw10=%*ph", 24, cdw10);
trace_seq_putc(p, 0);
return ret;
}
const char *nvme_trace_parse_admin_cmd(struct trace_seq *p,
u8 opcode, u8 *cdw10)
{
switch (opcode) {
case nvme_admin_delete_sq:
return nvme_trace_delete_sq(p, cdw10);
case nvme_admin_create_sq:
return nvme_trace_create_sq(p, cdw10);
case nvme_admin_delete_cq:
return nvme_trace_delete_cq(p, cdw10);
case nvme_admin_create_cq:
return nvme_trace_create_cq(p, cdw10);
case nvme_admin_identify:
return nvme_trace_admin_identify(p, cdw10);
case nvme_admin_set_features:
return nvme_trace_admin_set_features(p, cdw10);
case nvme_admin_get_features:
return nvme_trace_admin_get_features(p, cdw10);
case nvme_admin_get_lba_status:
return nvme_trace_get_lba_status(p, cdw10);
case nvme_admin_format_nvm:
return nvme_trace_admin_format_nvm(p, cdw10);
default:
return nvme_trace_common(p, cdw10);
}
}
const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p,
u8 opcode, u8 *cdw10)
{
switch (opcode) {
case nvme_cmd_read:
case nvme_cmd_write:
case nvme_cmd_write_zeroes:
case nvme_cmd_zone_append:
return nvme_trace_read_write(p, cdw10);
case nvme_cmd_dsm:
return nvme_trace_dsm(p, cdw10);
case nvme_cmd_zone_mgmt_send:
return nvme_trace_zone_mgmt_send(p, cdw10);
case nvme_cmd_zone_mgmt_recv:
return nvme_trace_zone_mgmt_recv(p, cdw10);
default:
return nvme_trace_common(p, cdw10);
}
}
static const char *nvme_trace_fabrics_property_set(struct trace_seq *p, u8 *spc)
{
const char *ret = trace_seq_buffer_ptr(p);
u8 attrib = spc[0];
u32 ofst = get_unaligned_le32(spc + 4);
u64 value = get_unaligned_le64(spc + 8);
trace_seq_printf(p, "attrib=%u, ofst=0x%x, value=0x%llx",
attrib, ofst, value);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_fabrics_connect(struct trace_seq *p, u8 *spc)
{
const char *ret = trace_seq_buffer_ptr(p);
u16 recfmt = get_unaligned_le16(spc);
u16 qid = get_unaligned_le16(spc + 2);
u16 sqsize = get_unaligned_le16(spc + 4);
u8 cattr = spc[6];
u32 kato = get_unaligned_le32(spc + 8);
trace_seq_printf(p, "recfmt=%u, qid=%u, sqsize=%u, cattr=%u, kato=%u",
recfmt, qid, sqsize, cattr, kato);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_fabrics_property_get(struct trace_seq *p, u8 *spc)
{
const char *ret = trace_seq_buffer_ptr(p);
u8 attrib = spc[0];
u32 ofst = get_unaligned_le32(spc + 4);
trace_seq_printf(p, "attrib=%u, ofst=0x%x", attrib, ofst);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_fabrics_auth_send(struct trace_seq *p, u8 *spc)
{
const char *ret = trace_seq_buffer_ptr(p);
u8 spsp0 = spc[1];
u8 spsp1 = spc[2];
u8 secp = spc[3];
u32 tl = get_unaligned_le32(spc + 4);
trace_seq_printf(p, "spsp0=%02x, spsp1=%02x, secp=%02x, tl=%u",
spsp0, spsp1, secp, tl);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_fabrics_auth_receive(struct trace_seq *p, u8 *spc)
{
const char *ret = trace_seq_buffer_ptr(p);
u8 spsp0 = spc[1];
u8 spsp1 = spc[2];
u8 secp = spc[3];
u32 al = get_unaligned_le32(spc + 4);
trace_seq_printf(p, "spsp0=%02x, spsp1=%02x, secp=%02x, al=%u",
spsp0, spsp1, secp, al);
trace_seq_putc(p, 0);
return ret;
}
static const char *nvme_trace_fabrics_common(struct trace_seq *p, u8 *spc)
{
const char *ret = trace_seq_buffer_ptr(p);
trace_seq_printf(p, "specific=%*ph", 24, spc);
trace_seq_putc(p, 0);
return ret;
}
const char *nvme_trace_parse_fabrics_cmd(struct trace_seq *p,
u8 fctype, u8 *spc)
{
switch (fctype) {
case nvme_fabrics_type_property_set:
return nvme_trace_fabrics_property_set(p, spc);
case nvme_fabrics_type_connect:
return nvme_trace_fabrics_connect(p, spc);
case nvme_fabrics_type_property_get:
return nvme_trace_fabrics_property_get(p, spc);
case nvme_fabrics_type_auth_send:
return nvme_trace_fabrics_auth_send(p, spc);
case nvme_fabrics_type_auth_receive:
return nvme_trace_fabrics_auth_receive(p, spc);
default:
return nvme_trace_fabrics_common(p, spc);
}
}
const char *nvme_trace_disk_name(struct trace_seq *p, char *name)
{
const char *ret = trace_seq_buffer_ptr(p);
if (*name)
trace_seq_printf(p, "disk=%s, ", name);
trace_seq_putc(p, 0);
return ret;
}
EXPORT_TRACEPOINT_SYMBOL_GPL(nvme_sq);
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