nvmet: add tracing of zns commands

Add nvme_cmd_zone_append, nvme_cmd_zone_mgmt_send and
nvme_cmd_zone_mgmt_recv parse to nvme target tracing.

Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Keith Busch <kbusch@kernel.org>

diff --git a/drivers/nvme/target/trace.c b/drivers/nvme/target/trace.c
index ca537fae37300047f30069143426ce1c65ed22ea..8d1806a828879a28b8ef1ba25e0437d695c0f56b 100644 (file)
--- a/drivers/nvme/target/trace.c
+++ b/drivers/nvme/target/trace.c
@@ -119,6 +119,67 @@ const char *nvmet_trace_parse_admin_cmd(struct trace_seq *p,
        }
 }
 
+static const char *nvmet_trace_zone_mgmt_send(struct trace_seq *p, u8 *cdw10)
+{
+       static const char * const zsa_strs[] = {
+               [0x01] = "close zone",
+               [0x02] = "finish zone",
+               [0x03] = "open zone",
+               [0x04] = "reset zone",
+               [0x05] = "offline zone",
+               [0x10] = "set zone descriptor extension"
+       };
+       const char *ret = trace_seq_buffer_ptr(p);
+       u64 slba = get_unaligned_le64(cdw10);
+       const char *zsa_str;
+       u8 zsa = cdw10[12];
+       u8 all = cdw10[13];
+
+       if (zsa < ARRAY_SIZE(zsa_strs) && zsa_strs[zsa])
+               zsa_str = zsa_strs[zsa];
+       else
+               zsa_str = "reserved";
+
+       trace_seq_printf(p, "slba=%llu, zsa=%u:%s, all=%u",
+               slba, zsa, zsa_str, all);
+       trace_seq_putc(p, 0);
+
+       return ret;
+}
+
+static const char *nvmet_trace_zone_mgmt_recv(struct trace_seq *p, u8 *cdw10)
+{
+       static const char * const zrasf_strs[] = {
+               [0x00] = "list all zones",
+               [0x01] = "list the zones in the ZSE: Empty state",
+               [0x02] = "list the zones in the ZSIO: Implicitly Opened state",
+               [0x03] = "list the zones in the ZSEO: Explicitly Opened state",
+               [0x04] = "list the zones in the ZSC: Closed state",
+               [0x05] = "list the zones in the ZSF: Full state",
+               [0x06] = "list the zones in the ZSRO: Read Only state",
+               [0x07] = "list the zones in the ZSO: Offline state",
+               [0x09] = "list the zones that have the zone attribute"
+       };
+       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];
+       const char *zrasf_str;
+       u8 pr = cdw10[14];
+
+       if (zrasf < ARRAY_SIZE(zrasf_strs) && zrasf_strs[zrasf])
+               zrasf_str = zrasf_strs[zrasf];
+       else
+               zrasf_str = "reserved";
+
+       trace_seq_printf(p, "slba=%llu, numd=%u, zra=%u, zrasf=%u:%s, pr=%u",
+               slba, numd, zra, zrasf, zrasf_str, pr);
+       trace_seq_putc(p, 0);
+
+       return ret;
+}
+
 const char *nvmet_trace_parse_nvm_cmd(struct trace_seq *p,
                u8 opcode, u8 *cdw10)
 {
@@ -126,9 +187,14 @@ const char *nvmet_trace_parse_nvm_cmd(struct trace_seq *p,
        case nvme_cmd_read:
        case nvme_cmd_write:
        case nvme_cmd_write_zeroes:
+       case nvme_cmd_zone_append:
                return nvmet_trace_read_write(p, cdw10);
        case nvme_cmd_dsm:
                return nvmet_trace_dsm(p, cdw10);
+       case nvme_cmd_zone_mgmt_send:
+               return nvmet_trace_zone_mgmt_send(p, cdw10);
+       case nvme_cmd_zone_mgmt_recv:
+               return nvmet_trace_zone_mgmt_recv(p, cdw10);
        default:
                return nvmet_trace_common(p, cdw10);
        }