/* packet-fcp.c * Routines for Fibre Channel Protocol for SCSI (FCP) * Copyright 2001, Dinesh G Dutt * * $Id$ * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "config.h" #include #include #include #include #include #include "packet-scsi.h" #include "packet-fc.h" #include "packet-fcp.h" #include "packet-fcels.h" /* Initialize the protocol and registered fields */ static int proto_fcp = -1; static int hf_fcp_multilun = -1; static int hf_fcp_singlelun = -1; static int hf_fcp_crn = -1; static int hf_fcp_taskattr = -1; static int hf_fcp_taskmgmt = -1; static int hf_fcp_addlcdblen = -1; static int hf_fcp_rddata = -1; static int hf_fcp_wrdata = -1; static int hf_fcp_dl = -1; static int hf_fcp_bidir_dl = -1; static int hf_fcp_data_ro = -1; static int hf_fcp_burstlen = -1; static int hf_fcp_rspflags = -1; static int hf_fcp_retry_delay_timer = -1; static int hf_fcp_resid = -1; static int hf_fcp_bidir_resid = -1; static int hf_fcp_snslen = -1; static int hf_fcp_rsplen = -1; static int hf_fcp_rspcode = -1; static int hf_fcp_scsistatus = -1; static int hf_fcp_type = -1; static int hf_fcp_mgmt_flags_obsolete = -1; static int hf_fcp_mgmt_flags_clear_aca = -1; static int hf_fcp_mgmt_flags_target_reset = -1; static int hf_fcp_mgmt_flags_lu_reset = -1; static int hf_fcp_mgmt_flags_rsvd = -1; static int hf_fcp_mgmt_flags_clear_task_set = -1; static int hf_fcp_mgmt_flags_abort_task_set = -1; static int hf_fcp_rsp_flags_bidi = -1; static int hf_fcp_rsp_flags_bidi_rru = -1; static int hf_fcp_rsp_flags_bidi_rro = -1; static int hf_fcp_rsp_flags_conf_req = -1; static int hf_fcp_rsp_flags_resid_under = -1; static int hf_fcp_rsp_flags_resid_over = -1; static int hf_fcp_rsp_flags_sns_vld = -1; static int hf_fcp_rsp_flags_res_vld = -1; static int hf_fcp_request_in = -1; static int hf_fcp_response_in = -1; static int hf_fcp_time = -1; static int hf_fcp_srr_op = -1; static int hf_fcp_srr_ox_id = -1; static int hf_fcp_srr_rx_id = -1; static int hf_fcp_srr_r_ctl = -1; /* Initialize the subtree pointers */ static gint ett_fcp = -1; static gint ett_fcp_taskmgmt = -1; static gint ett_fcp_rsp_flags = -1; typedef struct _fcp_conv_data_t { emem_tree_t *luns; } fcp_conv_data_t; static dissector_table_t fcp_dissector; static dissector_handle_t data_handle; /* Information Categories based on lower 4 bits of R_CTL */ #define FCP_IU_DATA 0x1 #define FCP_IU_UNSOL_CTL 0x2 #define FCP_IU_SOL_CTL 0x3 #define FCP_IU_CONFIRM 0x3 #define FCP_IU_XFER_RDY 0x5 #define FCP_IU_CMD 0x6 #define FCP_IU_RSP 0x7 static const value_string fcp_iu_val[] = { {FCP_IU_DATA , "FCP_DATA"}, {FCP_IU_UNSOL_CTL , "Control"}, {FCP_IU_CONFIRM , "Confirm"}, {FCP_IU_XFER_RDY , "XFER_RDY"}, {FCP_IU_CMD , "FCP_CMND"}, {FCP_IU_RSP , "FCP_RSP"}, {0, NULL}, }; /* Task Attribute Values */ static const value_string fcp_task_attr_val[] = { {0, "Simple"}, {1, "Head of Queue"}, {2, "Ordered"}, {4, "ACA"}, {5, "Untagged"}, {0, NULL}, }; /* RSP Code Definitions (from FCP_RSP_INFO) */ static const value_string fcp_rsp_code_val[] = { {0, "Task Management Function Complete"}, {1, "FCP_DATA length Different from FCP_BURST_LEN"}, {2, "FCP_CMND Fields Invalid"}, {3, "FCP_DATA Parameter Mismatch With FCP_DATA_RO"}, {4, "Task Management Function Rejected"}, {5, "Task Management Function Failed"}, {9, "Task Management Function Incorrect LUN"}, {0, NULL}, }; static const true_false_string fcp_mgmt_flags_obsolete_tfs = { "OBSOLETE BIT is SET", "OBSOLETE BIT is NOT set", }; static const true_false_string fcp_mgmt_flags_clear_aca_tfs = { "CLEAR ACA is SET", "Clear aca is NOT set", }; static const true_false_string fcp_mgmt_flags_target_reset_tfs = { "TARGET RESET is SET", "Target reset is NOT set", }; static const true_false_string fcp_mgmt_flags_lu_reset_tfs = { "LU RESET is SET", "Lu reset is NOT set", }; static const true_false_string fcp_mgmt_flags_rsvd_tfs = { "RSVD is SET", "Rsvd is NOT set", }; static const true_false_string fcp_mgmt_flags_clear_task_set_tfs = { "CLEAR TASK SET is SET", "Clear task set is NOT set", }; static const true_false_string fcp_mgmt_flags_abort_task_set_tfs = { "ABORT TASK SET is SET", "Abort task set is NOT set", }; static void dissect_task_mgmt_flags(packet_info *pinfo, proto_tree *parent_tree, tvbuff_t *tvb, int offset) { proto_item *item = NULL; proto_tree *tree = NULL; guint8 flags; if (parent_tree) { item = proto_tree_add_item(parent_tree, hf_fcp_taskmgmt, tvb, offset, 1, ENC_LITTLE_ENDIAN); tree = proto_item_add_subtree(item, ett_fcp_taskmgmt); } flags = tvb_get_guint8(tvb, offset); if (!flags) proto_item_append_text(item, " (No values set)"); proto_tree_add_boolean(tree, hf_fcp_mgmt_flags_obsolete, tvb, offset, 1, flags); if (flags & 0x80) { proto_item_append_text(item, " OBSOLETE"); col_prepend_fence_fstr(pinfo->cinfo, COL_INFO, "[FCP OBSOLETE] "); } flags &= (~( 0x80 )); proto_tree_add_boolean(tree, hf_fcp_mgmt_flags_clear_aca, tvb, offset, 1, flags); if (flags & 0x40) { proto_item_append_text(item, " CLEAR ACA"); col_prepend_fence_fstr(pinfo->cinfo, COL_INFO, "[FCP CLEAR_ACA] "); } flags &= (~( 0x40 )); proto_tree_add_boolean(tree, hf_fcp_mgmt_flags_target_reset, tvb, offset, 1, flags); if (flags & 0x20) { proto_item_append_text(item, " TARGET RESET"); col_prepend_fence_fstr(pinfo->cinfo, COL_INFO, "[FCP TARGET_RESET] "); } flags &= (~( 0x20 )); proto_tree_add_boolean(tree, hf_fcp_mgmt_flags_lu_reset, tvb, offset, 1, flags); if (flags & 0x10) { proto_item_append_text(item, " LU RESET"); col_prepend_fence_fstr(pinfo->cinfo, COL_INFO, "[FCP LU_RESET] "); } flags &= (~( 0x10 )); proto_tree_add_boolean(tree, hf_fcp_mgmt_flags_rsvd, tvb, offset, 1, flags); if (flags & 0x08) { proto_item_append_text(item, " RSVD"); col_prepend_fence_fstr(pinfo->cinfo, COL_INFO, "[FCP RSVD] "); } flags &= (~( 0x08 )); proto_tree_add_boolean(tree, hf_fcp_mgmt_flags_clear_task_set, tvb, offset, 1, flags); if (flags & 0x04) { proto_item_append_text(item, " CLEAR TASK SET"); col_prepend_fence_fstr(pinfo->cinfo, COL_INFO, "[FCP CLEAR_TASK_SET] "); } flags &= (~( 0x04 )); proto_tree_add_boolean(tree, hf_fcp_mgmt_flags_abort_task_set, tvb, offset, 1, flags); if (flags & 0x02) { proto_item_append_text(item, " ABORT TASK SET"); col_prepend_fence_fstr(pinfo->cinfo, COL_INFO, "[FCP ABORT_TASK_SET] "); } flags &= (~( 0x02 )); if (flags) { proto_item_append_text(item, " Unknown bitmap value 0x%x", flags); } } static const true_false_string fcp_rsp_flags_bidi_tfs = { "Bidirectional residual fields are PRESENT", "Bidirectional residual fields are NOT present", }; static const true_false_string fcp_rsp_flags_bidi_rru_tfs = { "Bidirectional residual underflow is PRESENT", "Bidirectional residual underflow is NOT present", }; static const true_false_string fcp_rsp_flags_bidi_rro_tfs = { "Bidirectional residual overflow is PRESENT", "Bidirectional residual overflow is NOT present", }; static const true_false_string fcp_rsp_flags_conf_req_tfs = { "CONF REQ is SET", "Conf req set is NOT set", }; static const true_false_string fcp_rsp_flags_resid_under_tfs = { "RESID UNDER is SET", "Resid under is NOT set", }; static const true_false_string fcp_rsp_flags_resid_over_tfs = { "RESID OVER is SET", "Resid over is NOT set", }; static const true_false_string fcp_rsp_flags_sns_vld_tfs = { "SNS VLD is SET", "Sns vld is NOT set", }; static const true_false_string fcp_rsp_flags_res_vld_tfs = { "RES VLD is SET", "Res vld is NOT set", }; static void dissect_rsp_flags(proto_tree *parent_tree, tvbuff_t *tvb, int offset) { proto_item *item = NULL; proto_tree *tree = NULL; gboolean bidi_resid_present = FALSE; guint8 flags; if (parent_tree) { item = proto_tree_add_item(parent_tree, hf_fcp_rspflags, tvb, offset, 1, ENC_LITTLE_ENDIAN); tree = proto_item_add_subtree(item, ett_fcp_rsp_flags); } flags = tvb_get_guint8(tvb, offset); if (!flags) proto_item_append_text(item, " (No values set)"); /* BIDI RSP */ proto_tree_add_boolean(tree, hf_fcp_rsp_flags_bidi, tvb, offset, 1, flags); if (flags & 0x80) { bidi_resid_present = TRUE; proto_item_append_text(item, " BIDI_RSP"); if (flags & (~( 0x80 ))) proto_item_append_text(item, ","); } flags &= (~( 0x80 )); /* these two bits are only defined if the bidi bit is set */ if (bidi_resid_present) { /* BIDI READ RESID UNDER */ proto_tree_add_boolean(tree, hf_fcp_rsp_flags_bidi_rru, tvb, offset, 1, flags); if (flags & 0x40) { proto_item_append_text(item, " BIDI_RRU"); if (flags & (~( 0x40 ))) proto_item_append_text(item, ","); } flags &= (~( 0x40 )); /* BIDI READ RESID OVER */ proto_tree_add_boolean(tree, hf_fcp_rsp_flags_bidi_rro, tvb, offset, 1, flags); if (flags & 0x20) { proto_item_append_text(item, " BIDI_RRO"); if (flags & (~( 0x20 ))) proto_item_append_text(item, ","); } flags &= (~( 0x20 )); } /* Conf Req */ proto_tree_add_boolean(tree, hf_fcp_rsp_flags_conf_req, tvb, offset, 1, flags); if (flags & 0x10) { proto_item_append_text(item, " CONF REQ"); if (flags & (~( 0x10 ))) proto_item_append_text(item, ","); } flags &= (~( 0x10 )); /* Resid Under */ proto_tree_add_boolean(tree, hf_fcp_rsp_flags_resid_under, tvb, offset, 1, flags); if (flags & 0x08) { proto_item_append_text(item, " RESID UNDER"); if (flags & (~( 0x08 ))) proto_item_append_text(item, ","); } flags &= (~( 0x08 )); /* Resid Over */ proto_tree_add_boolean(tree, hf_fcp_rsp_flags_resid_over, tvb, offset, 1, flags); if (flags & 0x04) { proto_item_append_text(item, " RESID OVER"); if (flags & (~( 0x04 ))) proto_item_append_text(item, ","); } flags &= (~( 0x04 )); /* SNS len valid */ proto_tree_add_boolean(tree, hf_fcp_rsp_flags_sns_vld, tvb, offset, 1, flags); if (flags & 0x02) { proto_item_append_text(item, " SNS VLD"); if (flags & (~( 0x02 ))) proto_item_append_text(item, ","); } flags &= (~( 0x02 )); /* rsp len valid */ proto_tree_add_boolean(tree, hf_fcp_rsp_flags_res_vld, tvb, offset, 1, flags); if (flags & 0x01) { proto_item_append_text(item, " RES VLD"); if (flags & (~( 0x01 ))) proto_item_append_text(item, ","); } flags &= (~( 0x01 )); if (flags) { proto_item_append_text(item, " Unknown bitmap value 0x%x", flags); } } static void dissect_fcp_cmnd(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, proto_tree *tree, conversation_t *conversation, fc_hdr *fchdr, fcp_conv_data_t *fcp_conv_data) { int offset = 0; int add_len = 0; guint8 flags, rwflags, lun0; guint16 lun = 0xffff; tvbuff_t *cdb_tvb; int tvb_len, tvb_rlen; itl_nexus_t *itl = NULL; proto_item *hidden_item; /* Determine the length of the FCP part of the packet */ flags = tvb_get_guint8(tvb, offset+10); if (flags) { add_len = tvb_get_guint8(tvb, offset+11) & 0x7C; add_len = add_len >> 2; } hidden_item = proto_tree_add_uint(tree, hf_fcp_type, tvb, offset, 0, 0); PROTO_ITEM_SET_HIDDEN(hidden_item); lun0 = tvb_get_guint8(tvb, offset); /* Display single-level LUNs in decimal for clarity */ /* I'm taking a shortcut here by assuming that if the first byte of the * LUN field is 0, it is a single-level LUN. This is not true. For a * real single-level LUN, all 8 bytes except byte 1 must be 0. */ if (lun0) { proto_tree_add_item(tree, hf_fcp_multilun, tvb, offset, 8, ENC_NA); lun = tvb_get_guint8(tvb, offset) & 0x3f; lun <<= 8; lun |= tvb_get_guint8(tvb, offset+1); } else { proto_tree_add_item(tree, hf_fcp_singlelun, tvb, offset+1, 1, ENC_BIG_ENDIAN); lun = tvb_get_guint8(tvb, offset+1); } if (fchdr->itlq) fchdr->itlq->lun = lun; itl = (itl_nexus_t *)se_tree_lookup32(fcp_conv_data->luns, lun); if (!itl) { itl = se_alloc(sizeof(itl_nexus_t)); itl->cmdset = 0xff; itl->conversation = conversation; se_tree_insert32(fcp_conv_data->luns, lun, itl); } proto_tree_add_item(tree, hf_fcp_crn, tvb, offset+8, 1, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_fcp_taskattr, tvb, offset+9, 1, ENC_BIG_ENDIAN); dissect_task_mgmt_flags(pinfo, tree, tvb, offset+10); proto_tree_add_item(tree, hf_fcp_addlcdblen, tvb, offset+11, 1, ENC_BIG_ENDIAN); rwflags = tvb_get_guint8(tvb, offset+11); if (fchdr->itlq) { if (rwflags & 0x02) { fchdr->itlq->task_flags |= SCSI_DATA_READ; } if (rwflags & 0x01) { fchdr->itlq->task_flags |= SCSI_DATA_WRITE; } } proto_tree_add_item(tree, hf_fcp_rddata, tvb, offset+11, 1, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_fcp_wrdata, tvb, offset+11, 1, ENC_BIG_ENDIAN); tvb_len = tvb_length_remaining(tvb, offset+12); if (tvb_len > (16 + add_len)) tvb_len = 16 + add_len; tvb_rlen = tvb_reported_length_remaining(tvb, offset+12); if (tvb_rlen > (16 + add_len)) tvb_rlen = 16 + add_len; cdb_tvb = tvb_new_subset(tvb, offset+12, tvb_len, tvb_rlen); dissect_scsi_cdb(cdb_tvb, pinfo, parent_tree, SCSI_DEV_UNKNOWN, fchdr->itlq, itl); proto_tree_add_item(tree, hf_fcp_dl, tvb, offset+12+16+add_len, 4, ENC_BIG_ENDIAN); if (fchdr->itlq) { fchdr->itlq->data_length = tvb_get_ntohl(tvb, offset+12+16+add_len); } if ( ((rwflags & 0x03) == 0x03) && tvb_length_remaining(tvb, offset+12+16+add_len+4) >= 4) { proto_tree_add_item(tree, hf_fcp_bidir_dl, tvb, offset+12+16+add_len+4, 4, ENC_BIG_ENDIAN); if (fchdr->itlq) { fchdr->itlq->bidir_data_length = tvb_get_ntohl(tvb, offset+12+16+add_len+4); } } } static void dissect_fcp_data(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, conversation_t *conversation _U_, fc_hdr *fchdr, itl_nexus_t *itl) { dissect_scsi_payload(tvb, pinfo, parent_tree, FALSE, fchdr->itlq, itl, fchdr->relative_offset); } /* fcp-3 9.5 table 24 */ static void dissect_fcp_rspinfo(tvbuff_t *tvb, proto_tree *tree, int offset) { /* 3 reserved bytes */ offset += 3; /* rsp code */ proto_tree_add_item(tree, hf_fcp_rspcode, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; /* 4 reserved bytes */ offset += 4; } static void dissect_fcp_rsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, proto_tree *tree, conversation_t *conversation _U_, fc_hdr *fchdr, itl_nexus_t *itl) { guint32 offset = 0; gint32 snslen = 0; gint32 rsplen = 0; guint8 flags; guint8 status; proto_item *hidden_item; status = tvb_get_guint8(tvb, offset+11); if (check_col(pinfo->cinfo, COL_INFO)) { col_append_fstr(pinfo->cinfo, COL_INFO, ":%s", val_to_str(status, scsi_status_val, "0x%x")); } hidden_item = proto_tree_add_uint(tree, hf_fcp_type, tvb, offset, 0, 0); PROTO_ITEM_SET_HIDDEN(hidden_item); /* 8 reserved bytes */ offset += 8; /* retry delay timer */ proto_tree_add_item(tree, hf_fcp_retry_delay_timer, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; /* flags */ flags = tvb_get_guint8(tvb, offset); dissect_rsp_flags(tree, tvb, offset); offset += 1; /* scsi status code */ proto_tree_add_item(tree, hf_fcp_scsistatus, tvb, offset, 1, ENC_BIG_ENDIAN); dissect_scsi_rsp(tvb, pinfo, parent_tree, fchdr->itlq, itl, tvb_get_guint8(tvb, offset)); offset += 1; /* residual count */ if (flags & 0x0e) { proto_tree_add_item(tree, hf_fcp_resid, tvb, offset, 4, ENC_BIG_ENDIAN); } offset += 4; /* sense length */ if (flags & 0x2) { snslen = tvb_get_ntohl(tvb, offset); proto_tree_add_uint(tree, hf_fcp_snslen, tvb, offset, 4, snslen); } offset += 4; /* response length */ if (flags & 0x1) { rsplen = tvb_get_ntohl(tvb, offset); proto_tree_add_uint(tree, hf_fcp_rsplen, tvb, offset, 4, rsplen); } offset += 4; /* rsp_info */ if (rsplen) { tvbuff_t *rspinfo_tvb; rspinfo_tvb = tvb_new_subset(tvb, offset, MIN(rsplen, tvb_length_remaining(tvb, offset)), rsplen); dissect_fcp_rspinfo(rspinfo_tvb, tree, 0); offset += rsplen; } /* sense info */ if (snslen) { tvbuff_t *sns_tvb; sns_tvb = tvb_new_subset(tvb, offset, MIN(snslen, tvb_length_remaining(tvb, offset)), snslen); dissect_scsi_snsinfo(sns_tvb, pinfo, parent_tree, 0, snslen, fchdr->itlq, itl); offset += snslen; } /* bidir read resid (only present for bidirectional responses) */ if (flags & 0x80) { if (flags & 0x60) { proto_tree_add_item(tree, hf_fcp_bidir_resid, tvb, offset, 4, ENC_BIG_ENDIAN); } offset += 4; } } static void dissect_fcp_xfer_rdy(tvbuff_t *tvb, proto_tree *tree) { int offset = 0; proto_item *hidden_item; hidden_item = proto_tree_add_uint(tree, hf_fcp_type, tvb, offset, 0, 0); PROTO_ITEM_SET_HIDDEN(hidden_item); proto_tree_add_item(tree, hf_fcp_data_ro, tvb, offset, 4, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_fcp_burstlen, tvb, offset+4, 4, ENC_BIG_ENDIAN); } static void dissect_fcp_srr(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { guint8 r_ctl; r_ctl = pinfo->r_ctl & 0xf; if (r_ctl == FCP_IU_UNSOL_CTL) { /* request */ proto_tree_add_item(tree, hf_fcp_srr_ox_id, tvb, 4, 2, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_fcp_srr_rx_id, tvb, 6, 2, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_fcp_data_ro, tvb, 8, 4, ENC_BIG_ENDIAN); r_ctl = tvb_get_guint8(tvb, 12); proto_tree_add_text(tree, tvb, 12, 1, "R_CTL: %s", val_to_str(r_ctl, fcp_iu_val, "0x%02x")); } } static const value_string fcp_els_iu_val[] = { {FCP_IU_UNSOL_CTL , "FCP ELS Request"}, {FCP_IU_SOL_CTL , "FCP ELS Response"}, {0, NULL}, }; /* * Dissect FC-4 ELS for FCP. */ static void dissect_fcp_els(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { guint8 op; op = tvb_get_guint8(tvb, 0); col_add_str(pinfo->cinfo, COL_INFO, val_to_str(op, fc_els_proto_val, "0x%x")); proto_tree_add_text(tree, tvb, 0, 1, "Opcode: %s", val_to_str(op, fc_els_proto_val, "ELS 0x%02x")); switch (op) { /* XXX should switch based on conv for LS_ACC */ case FC_ELS_SRR: dissect_fcp_srr(tvb, pinfo, tree); break; default: call_dissector(data_handle, tvb, pinfo, tree); break; } } static void dissect_fcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { proto_item *ti = NULL; proto_tree *fcp_tree = NULL; fc_hdr *fchdr; guint8 r_ctl; fcp_conv_data_t *fcp_conv_data; itl_nexus_t *itl = NULL; gboolean els; fchdr = (fc_hdr *)pinfo->private_data; /* Make entries in Protocol column and Info column on summary display */ col_set_str(pinfo->cinfo, COL_PROTOCOL, "FCP"); r_ctl = pinfo->r_ctl; els = (r_ctl & 0xf0) == FC_RCTL_LINK_DATA; r_ctl &= 0xF; if (check_col(pinfo->cinfo, COL_INFO)) { col_add_str(pinfo->cinfo, COL_INFO, val_to_str(r_ctl, els ? fcp_els_iu_val : fcp_iu_val, "0x%x")); } if (tree) { ti = proto_tree_add_protocol_format(tree, proto_fcp, tvb, 0, -1, "FCP: %s", val_to_str(r_ctl, els ? fcp_els_iu_val : fcp_iu_val, "Unknown 0x%02x")); fcp_tree = proto_item_add_subtree(ti, ett_fcp); } fcp_conv_data = conversation_get_proto_data(fchdr->conversation, proto_fcp); if (!fcp_conv_data) { fcp_conv_data = se_alloc(sizeof(fcp_conv_data_t)); fcp_conv_data->luns = se_tree_create_non_persistent(EMEM_TREE_TYPE_RED_BLACK, "FCP Luns"); conversation_add_proto_data(fchdr->conversation, proto_fcp, fcp_conv_data); } if ((r_ctl != FCP_IU_CMD) && (r_ctl != FCP_IU_UNSOL_CTL)) { itl = (itl_nexus_t *)se_tree_lookup32(fcp_conv_data->luns, fchdr->itlq->lun); } /* put a request_in in all frames except the command frame */ if ((r_ctl != FCP_IU_CMD) && (r_ctl != FCP_IU_UNSOL_CTL) && (fchdr->itlq->first_exchange_frame)) { proto_item *it; it = proto_tree_add_uint(fcp_tree, hf_fcp_singlelun, tvb, 0, 0, fchdr->itlq->lun); PROTO_ITEM_SET_GENERATED(it); it = proto_tree_add_uint(fcp_tree, hf_fcp_request_in, tvb, 0, 0, fchdr->itlq->first_exchange_frame); PROTO_ITEM_SET_GENERATED(it); /* only put the response time in the actual response frame */ if (r_ctl == FCP_IU_RSP) { nstime_t delta_ts; nstime_delta(&delta_ts, &pinfo->fd->abs_ts, &fchdr->itlq->fc_time); it = proto_tree_add_time(ti, hf_fcp_time, tvb, 0, 0, &delta_ts); PROTO_ITEM_SET_GENERATED(it); } } /* put a response_in in all frames except the response frame */ if ((r_ctl != FCP_IU_RSP) && (r_ctl != FCP_IU_SOL_CTL) && (fchdr->itlq->last_exchange_frame)) { proto_item *it; it = proto_tree_add_uint(fcp_tree, hf_fcp_response_in, tvb, 0, 0, fchdr->itlq->last_exchange_frame); PROTO_ITEM_SET_GENERATED(it); } if (els) { dissect_fcp_els(tvb, pinfo, fcp_tree); return; } switch (r_ctl) { case FCP_IU_DATA: dissect_fcp_data(tvb, pinfo, tree, fchdr->conversation, fchdr, itl); break; case FCP_IU_CONFIRM: /* Nothing to be done here */ break; case FCP_IU_XFER_RDY: dissect_fcp_xfer_rdy(tvb, fcp_tree); break; case FCP_IU_CMD: dissect_fcp_cmnd(tvb, pinfo, tree, fcp_tree, fchdr->conversation, fchdr, fcp_conv_data); break; case FCP_IU_RSP: dissect_fcp_rsp(tvb, pinfo, tree, fcp_tree, fchdr->conversation, fchdr, itl); break; default: call_dissector(data_handle, tvb, pinfo, tree); break; } /*xxx once the subdissectors return bytes consumed: proto_item_set_end(ti, tvb, offset);*/ } /* Register the protocol with Wireshark */ void proto_register_fcp(void) { /* Setup list of header fields See Section 1.6.1 for details*/ static hf_register_info hf[] = { { &hf_fcp_type, {"Field to branch off to SCSI", "fcp.type", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_multilun, {"Multi-Level LUN", "fcp.multilun", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_singlelun, {"LUN", "fcp.lun", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_crn, {"Command Ref Num", "fcp.crn", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_taskattr, {"Task Attribute", "fcp.taskattr", FT_UINT8, BASE_HEX, VALS(fcp_task_attr_val), 0x7, NULL, HFILL}}, { &hf_fcp_taskmgmt, {"Task Management Flags", "fcp.taskmgmt", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_addlcdblen, {"Additional CDB Length", "fcp.addlcdblen", FT_UINT8, BASE_DEC, NULL, 0xFC, NULL, HFILL}}, { &hf_fcp_rddata, {"RDDATA", "fcp.rddata", FT_BOOLEAN, 8, NULL, 0x02, NULL, HFILL}}, { &hf_fcp_wrdata, {"WRDATA", "fcp.wrdata", FT_BOOLEAN, 8, NULL, 0x01, NULL, HFILL}}, { &hf_fcp_dl, {"FCP_DL", "fcp.dl", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_bidir_dl, {"FCP_BIDIRECTIONAL_READ_DL", "fcp.bidir_dl", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_data_ro, {"FCP_DATA_RO", "fcp.data_ro", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_burstlen, {"Burst Length", "fcp.burstlen", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_retry_delay_timer, {"Retry Delay Timer", "fcp.rsp.retry_delay_timer", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_rspflags, {"FCP_RSP Flags", "fcp.rspflags", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_resid, {"FCP_RESID", "fcp.resid", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_bidir_resid, {"Bidirectional Read Resid", "fcp.bidir_resid", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_snslen, {"FCP_SNS_LEN", "fcp.snslen", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_rsplen, {"FCP_RSP_LEN", "fcp.rsplen", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_rspcode, {"RSP_CODE", "fcp.rspcode", FT_UINT8, BASE_HEX, VALS(fcp_rsp_code_val), 0x0, NULL, HFILL}}, { &hf_fcp_scsistatus, {"SCSI Status", "fcp.status", FT_UINT8, BASE_HEX, VALS(scsi_status_val), 0x0, NULL, HFILL}}, { &hf_fcp_mgmt_flags_obsolete, { "Obsolete", "fcp.mgmt.flags.obsolete", FT_BOOLEAN, 8, TFS(&fcp_mgmt_flags_obsolete_tfs), 0x80, NULL, HFILL }}, { &hf_fcp_mgmt_flags_clear_aca, { "Clear ACA", "fcp.mgmt.flags.clear_aca", FT_BOOLEAN, 8, TFS(&fcp_mgmt_flags_clear_aca_tfs), 0x40, NULL, HFILL }}, { &hf_fcp_mgmt_flags_target_reset, { "Target Reset", "fcp.mgmt.flags.target_reset", FT_BOOLEAN, 8, TFS(&fcp_mgmt_flags_target_reset_tfs), 0x20, NULL, HFILL }}, { &hf_fcp_mgmt_flags_lu_reset, { "LU Reset", "fcp.mgmt.flags.lu_reset", FT_BOOLEAN, 8, TFS(&fcp_mgmt_flags_lu_reset_tfs), 0x10, NULL, HFILL }}, { &hf_fcp_mgmt_flags_rsvd, { "Rsvd", "fcp.mgmt.flags.rsvd", FT_BOOLEAN, 8, TFS(&fcp_mgmt_flags_rsvd_tfs), 0x08, NULL, HFILL }}, { &hf_fcp_mgmt_flags_clear_task_set, { "Clear Task Set", "fcp.mgmt.flags.clear_task_set", FT_BOOLEAN, 8, TFS(&fcp_mgmt_flags_clear_task_set_tfs), 0x04, NULL, HFILL }}, { &hf_fcp_mgmt_flags_abort_task_set, { "Abort Task Set", "fcp.mgmt.flags.abort_task_set", FT_BOOLEAN, 8, TFS(&fcp_mgmt_flags_abort_task_set_tfs), 0x02, NULL, HFILL }}, { &hf_fcp_rsp_flags_bidi, { "Bidi Rsp", "fcp.rsp.flags.bidi", FT_BOOLEAN, 8, TFS(&fcp_rsp_flags_bidi_tfs), 0x80, NULL, HFILL }}, { &hf_fcp_rsp_flags_bidi_rru, { "Bidi Read Resid Under", "fcp.rsp.flags.bidi_rru", FT_BOOLEAN, 8, TFS(&fcp_rsp_flags_bidi_rru_tfs), 0x40, NULL, HFILL }}, { &hf_fcp_rsp_flags_bidi_rro, { "Bidi Read Resid Over", "fcp.rsp.flags.bidi_rro", FT_BOOLEAN, 8, TFS(&fcp_rsp_flags_bidi_rro_tfs), 0x20, NULL, HFILL }}, { &hf_fcp_rsp_flags_conf_req, { "Conf Req", "fcp.rsp.flags.conf_req", FT_BOOLEAN, 8, TFS(&fcp_rsp_flags_conf_req_tfs), 0x10, NULL, HFILL }}, { &hf_fcp_rsp_flags_resid_under, { "Resid Under", "fcp.rsp.flags.resid_under", FT_BOOLEAN, 8, TFS(&fcp_rsp_flags_resid_under_tfs), 0x08, NULL, HFILL }}, { &hf_fcp_rsp_flags_resid_over, { "Resid Over", "fcp.rsp.flags.resid_over", FT_BOOLEAN, 8, TFS(&fcp_rsp_flags_resid_over_tfs), 0x04, NULL, HFILL }}, { &hf_fcp_rsp_flags_sns_vld, { "SNS Vld", "fcp.rsp.flags.sns_vld", FT_BOOLEAN, 8, TFS(&fcp_rsp_flags_sns_vld_tfs), 0x02, NULL, HFILL }}, { &hf_fcp_rsp_flags_res_vld, { "RES Vld", "fcp.rsp.flags.res_vld", FT_BOOLEAN, 8, TFS(&fcp_rsp_flags_res_vld_tfs), 0x01, NULL, HFILL }}, { &hf_fcp_request_in, { "Request In", "fcp.request_in", FT_FRAMENUM, BASE_NONE, NULL, 0, "The frame number for the request", HFILL }}, { &hf_fcp_response_in, { "Response In", "fcp.response_in", FT_FRAMENUM, BASE_NONE, NULL, 0, "The frame number of the response", HFILL }}, { &hf_fcp_time, { "Time from FCP_CMND", "fcp.time", FT_RELATIVE_TIME, BASE_NONE, NULL, 0, "Time since the FCP_CMND frame", HFILL }}, { &hf_fcp_srr_op, {"Opcode", "fcp.els.op", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_srr_ox_id, {"OX_ID", "fcp.els.srr.ox_id", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_srr_rx_id, {"RX_ID", "fcp.els.srr.rx_id", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL}}, { &hf_fcp_srr_r_ctl, {"R_CTL", "fcp.els.srr.r_ctl", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}}, }; /* Setup protocol subtree array */ static gint *ett[] = { &ett_fcp, &ett_fcp_taskmgmt, &ett_fcp_rsp_flags, }; /* Register the protocol name and description */ proto_fcp = proto_register_protocol("Fibre Channel Protocol for SCSI", "FCP", "fcp"); /* Required function calls to register the header fields and subtrees used */ proto_register_field_array(proto_fcp, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); fcp_dissector = register_dissector_table("fcp.type", "FCP Type", FT_UINT8, BASE_HEX); } void proto_reg_handoff_fcp(void) { dissector_handle_t fcp_handle; fcp_handle = create_dissector_handle(dissect_fcp, proto_fcp); dissector_add_uint("fc.ftype", FC_FTYPE_SCSI, fcp_handle); data_handle = find_dissector("data"); }