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// SPDX-License-Identifier: GPL-2.0 #include <stdio.h> #include <string.h> #include <inttypes.h> #include "event-parse.h" #include "trace-seq.h" typedef unsigned long sector_t; typedef uint64_t u64; typedef unsigned int u32; /* * SCSI opcodes */ #define TEST_UNIT_READY 0x00 #define REZERO_UNIT 0x01 #define REQUEST_SENSE 0x03 #define FORMAT_UNIT 0x04 #define READ_BLOCK_LIMITS 0x05 #define REASSIGN_BLOCKS 0x07 #define INITIALIZE_ELEMENT_STATUS 0x07 #define READ_6 0x08 #define WRITE_6 0x0a #define SEEK_6 0x0b #define READ_REVERSE 0x0f #define WRITE_FILEMARKS 0x10 #define SPACE 0x11 #define INQUIRY 0x12 #define RECOVER_BUFFERED_DATA 0x14 #define MODE_SELECT 0x15 #define RESERVE 0x16 #define RELEASE 0x17 #define COPY 0x18 #define ERASE 0x19 #define MODE_SENSE 0x1a #define START_STOP 0x1b #define RECEIVE_DIAGNOSTIC 0x1c #define SEND_DIAGNOSTIC 0x1d #define ALLOW_MEDIUM_REMOVAL 0x1e #define READ_FORMAT_CAPACITIES 0x23 #define SET_WINDOW 0x24 #define READ_CAPACITY 0x25 #define READ_10 0x28 #define WRITE_10 0x2a #define SEEK_10 0x2b #define POSITION_TO_ELEMENT 0x2b #define WRITE_VERIFY 0x2e #define VERIFY 0x2f #define SEARCH_HIGH 0x30 #define SEARCH_EQUAL 0x31 #define SEARCH_LOW 0x32 #define SET_LIMITS 0x33 #define PRE_FETCH 0x34 #define READ_POSITION 0x34 #define SYNCHRONIZE_CACHE 0x35 #define LOCK_UNLOCK_CACHE 0x36 #define READ_DEFECT_DATA 0x37 #define MEDIUM_SCAN 0x38 #define COMPARE 0x39 #define COPY_VERIFY 0x3a #define WRITE_BUFFER 0x3b #define READ_BUFFER 0x3c #define UPDATE_BLOCK 0x3d #define READ_LONG 0x3e #define WRITE_LONG 0x3f #define CHANGE_DEFINITION 0x40 #define WRITE_SAME 0x41 #define UNMAP 0x42 #define READ_TOC 0x43 #define READ_HEADER 0x44 #define GET_EVENT_STATUS_NOTIFICATION 0x4a #define LOG_SELECT 0x4c #define LOG_SENSE 0x4d #define XDWRITEREAD_10 0x53 #define MODE_SELECT_10 0x55 #define RESERVE_10 0x56 #define RELEASE_10 0x57 #define MODE_SENSE_10 0x5a #define PERSISTENT_RESERVE_IN 0x5e #define PERSISTENT_RESERVE_OUT 0x5f #define VARIABLE_LENGTH_CMD 0x7f #define REPORT_LUNS 0xa0 #define SECURITY_PROTOCOL_IN 0xa2 #define MAINTENANCE_IN 0xa3 #define MAINTENANCE_OUT 0xa4 #define MOVE_MEDIUM 0xa5 #define EXCHANGE_MEDIUM 0xa6 #define READ_12 0xa8 #define SERVICE_ACTION_OUT_12 0xa9 #define WRITE_12 0xaa #define SERVICE_ACTION_IN_12 0xab #define WRITE_VERIFY_12 0xae #define VERIFY_12 0xaf #define SEARCH_HIGH_12 0xb0 #define SEARCH_EQUAL_12 0xb1 #define SEARCH_LOW_12 0xb2 #define SECURITY_PROTOCOL_OUT 0xb5 #define READ_ELEMENT_STATUS 0xb8 #define SEND_VOLUME_TAG 0xb6 #define WRITE_LONG_2 0xea #define EXTENDED_COPY 0x83 #define RECEIVE_COPY_RESULTS 0x84 #define ACCESS_CONTROL_IN 0x86 #define ACCESS_CONTROL_OUT 0x87 #define READ_16 0x88 #define WRITE_16 0x8a #define READ_ATTRIBUTE 0x8c #define WRITE_ATTRIBUTE 0x8d #define VERIFY_16 0x8f #define SYNCHRONIZE_CACHE_16 0x91 #define WRITE_SAME_16 0x93 #define SERVICE_ACTION_BIDIRECTIONAL 0x9d #define SERVICE_ACTION_IN_16 0x9e #define SERVICE_ACTION_OUT_16 0x9f /* values for service action in */ #define SAI_READ_CAPACITY_16 0x10 #define SAI_GET_LBA_STATUS 0x12 /* values for VARIABLE_LENGTH_CMD service action codes * see spc4r17 Section D.3.5, table D.7 and D.8 */ #define VLC_SA_RECEIVE_CREDENTIAL 0x1800 /* values for maintenance in */ #define MI_REPORT_IDENTIFYING_INFORMATION 0x05 #define MI_REPORT_TARGET_PGS 0x0a #define MI_REPORT_ALIASES 0x0b #define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c #define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d #define MI_REPORT_PRIORITY 0x0e #define MI_REPORT_TIMESTAMP 0x0f #define MI_MANAGEMENT_PROTOCOL_IN 0x10 /* value for MI_REPORT_TARGET_PGS ext header */ #define MI_EXT_HDR_PARAM_FMT 0x20 /* values for maintenance out */ #define MO_SET_IDENTIFYING_INFORMATION 0x06 #define MO_SET_TARGET_PGS 0x0a #define MO_CHANGE_ALIASES 0x0b #define MO_SET_PRIORITY 0x0e #define MO_SET_TIMESTAMP 0x0f #define MO_MANAGEMENT_PROTOCOL_OUT 0x10 /* values for variable length command */ #define XDREAD_32 0x03 #define XDWRITE_32 0x04 #define XPWRITE_32 0x06 #define XDWRITEREAD_32 0x07 #define READ_32 0x09 #define VERIFY_32 0x0a #define WRITE_32 0x0b #define WRITE_SAME_32 0x0d #define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f) #define SERVICE_ACTION32(cdb) ((cdb[8] << 8) | cdb[9]) static const char * scsi_trace_misc(struct trace_seq *, unsigned char *, int); static const char * scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len; sector_t lba = 0, txlen = 0; lba |= ((cdb[1] & 0x1F) << 16); lba |= (cdb[2] << 8); lba |= cdb[3]; txlen = cdb[4]; trace_seq_printf(p, "lba=%llu txlen=%llu", (unsigned long long)lba, (unsigned long long)txlen); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len; sector_t lba = 0, txlen = 0; lba |= (cdb[2] << 24); lba |= (cdb[3] << 16); lba |= (cdb[4] << 8); lba |= cdb[5]; txlen |= (cdb[7] << 8); txlen |= cdb[8]; trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u", (unsigned long long)lba, (unsigned long long)txlen, cdb[1] >> 5); if (cdb[0] == WRITE_SAME) trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len; sector_t lba = 0, txlen = 0; lba |= (cdb[2] << 24); lba |= (cdb[3] << 16); lba |= (cdb[4] << 8); lba |= cdb[5]; txlen |= (cdb[6] << 24); txlen |= (cdb[7] << 16); txlen |= (cdb[8] << 8); txlen |= cdb[9]; trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u", (unsigned long long)lba, (unsigned long long)txlen, cdb[1] >> 5); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len; sector_t lba = 0, txlen = 0; lba |= ((u64)cdb[2] << 56); lba |= ((u64)cdb[3] << 48); lba |= ((u64)cdb[4] << 40); lba |= ((u64)cdb[5] << 32); lba |= (cdb[6] << 24); lba |= (cdb[7] << 16); lba |= (cdb[8] << 8); lba |= cdb[9]; txlen |= (cdb[10] << 24); txlen |= (cdb[11] << 16); txlen |= (cdb[12] << 8); txlen |= cdb[13]; trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u", (unsigned long long)lba, (unsigned long long)txlen, cdb[1] >> 5); if (cdb[0] == WRITE_SAME_16) trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len, *cmd; sector_t lba = 0, txlen = 0; u32 ei_lbrt = 0; switch (SERVICE_ACTION32(cdb)) { case READ_32: cmd = "READ"; break; case VERIFY_32: cmd = "VERIFY"; break; case WRITE_32: cmd = "WRITE"; break; case WRITE_SAME_32: cmd = "WRITE_SAME"; break; default: trace_seq_printf(p, "UNKNOWN"); goto out; } lba |= ((u64)cdb[12] << 56); lba |= ((u64)cdb[13] << 48); lba |= ((u64)cdb[14] << 40); lba |= ((u64)cdb[15] << 32); lba |= (cdb[16] << 24); lba |= (cdb[17] << 16); lba |= (cdb[18] << 8); lba |= cdb[19]; ei_lbrt |= (cdb[20] << 24); ei_lbrt |= (cdb[21] << 16); ei_lbrt |= (cdb[22] << 8); ei_lbrt |= cdb[23]; txlen |= (cdb[28] << 24); txlen |= (cdb[29] << 16); txlen |= (cdb[30] << 8); txlen |= cdb[31]; trace_seq_printf(p, "%s_32 lba=%llu txlen=%llu protect=%u ei_lbrt=%u", cmd, (unsigned long long)lba, (unsigned long long)txlen, cdb[10] >> 5, ei_lbrt); if (SERVICE_ACTION32(cdb) == WRITE_SAME_32) trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1); out: trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len; unsigned int regions = cdb[7] << 8 | cdb[8]; trace_seq_printf(p, "regions=%u", (regions - 8) / 16); trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len, *cmd; sector_t lba = 0; u32 alloc_len = 0; switch (SERVICE_ACTION16(cdb)) { case SAI_READ_CAPACITY_16: cmd = "READ_CAPACITY_16"; break; case SAI_GET_LBA_STATUS: cmd = "GET_LBA_STATUS"; break; default: trace_seq_printf(p, "UNKNOWN"); goto out; } lba |= ((u64)cdb[2] << 56); lba |= ((u64)cdb[3] << 48); lba |= ((u64)cdb[4] << 40); lba |= ((u64)cdb[5] << 32); lba |= (cdb[6] << 24); lba |= (cdb[7] << 16); lba |= (cdb[8] << 8); lba |= cdb[9]; alloc_len |= (cdb[10] << 24); alloc_len |= (cdb[11] << 16); alloc_len |= (cdb[12] << 8); alloc_len |= cdb[13]; trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd, (unsigned long long)lba, alloc_len); out: trace_seq_putc(p, 0); return ret; } static const char * scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len) { switch (SERVICE_ACTION32(cdb)) { case READ_32: case VERIFY_32: case WRITE_32: case WRITE_SAME_32: return scsi_trace_rw32(p, cdb, len); default: return scsi_trace_misc(p, cdb, len); } } static const char * scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len) { const char *ret = p->buffer + p->len; trace_seq_printf(p, "-"); trace_seq_putc(p, 0); return ret; } const char * scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len) { switch (cdb[0]) { case READ_6: case WRITE_6: return scsi_trace_rw6(p, cdb, len); case READ_10: case VERIFY: case WRITE_10: case WRITE_SAME: return scsi_trace_rw10(p, cdb, len); case READ_12: case VERIFY_12: case WRITE_12: return scsi_trace_rw12(p, cdb, len); case READ_16: case VERIFY_16: case WRITE_16: case WRITE_SAME_16: return scsi_trace_rw16(p, cdb, len); case UNMAP: return scsi_trace_unmap(p, cdb, len); case SERVICE_ACTION_IN_16: return scsi_trace_service_action_in(p, cdb, len); case VARIABLE_LENGTH_CMD: return scsi_trace_varlen(p, cdb, len); default: return scsi_trace_misc(p, cdb, len); } } unsigned long long process_scsi_trace_parse_cdb(struct trace_seq *s, unsigned long long *args) { scsi_trace_parse_cdb(s, (unsigned char *) (unsigned long) args[1], args[2]); return 0; } int TEP_PLUGIN_LOADER(struct tep_handle *pevent) { tep_register_print_function(pevent, process_scsi_trace_parse_cdb, TEP_FUNC_ARG_STRING, "scsi_trace_parse_cdb", TEP_FUNC_ARG_PTR, TEP_FUNC_ARG_PTR, TEP_FUNC_ARG_INT, TEP_FUNC_ARG_VOID); return 0; } void TEP_PLUGIN_UNLOADER(struct tep_handle *pevent) { tep_unregister_print_function(pevent, process_scsi_trace_parse_cdb, "scsi_trace_parse_cdb"); }
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