static void
dissect_ancp_port_up_dn_mgmt(tvbuff_t *tvb, proto_tree *ancp_tree, gint offset)
{
proto_item *sti = NULL;
proto_tree *tlv_tree = NULL, *dsl_tree = NULL;
guint8 tech_type;
guint16 tlen, ttype, stlvtype, stlvlen;
gint16 num_tlvs, num_stlvs;
gint val;
proto_tree_add_item(ancp_tree, hf_ancp_port, tvb, offset, 4,
ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(ancp_tree, hf_ancp_port_sess_num, tvb, offset, 4,
ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(ancp_tree, hf_ancp_evt_seq_num, tvb, offset, 4,
ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(ancp_tree, hf_ancp_label, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* Start of the Extension Block */
proto_tree_add_item(ancp_tree, hf_ancp_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/*
* We have already displayed the message type in the common header dissect
* need not display this again here - skip it
*/
offset += 1; /* Message type in Ext Blk */
proto_tree_add_item(ancp_tree, hf_ancp_tech_type, tvb, offset, 1, ENC_BIG_ENDIAN);
tech_type = tvb_get_guint8(tvb, offset);
offset += 1;
proto_tree_add_item(ancp_tree, hf_ancp_blk_len, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
if (tech_type == TECH_TYPE_DSL) {
proto_tree_add_item(ancp_tree, hf_ancp_num_ext_tlvs, tvb,
offset, 2, ENC_BIG_ENDIAN);
num_tlvs = tvb_get_ntohs(tvb, offset);
offset += 2;
sti = proto_tree_add_item(ancp_tree, hf_ancp_len, tvb,
offset, 2, ENC_BIG_ENDIAN);
proto_item_append_text(sti, " (Extension Block)");
offset += 2;
/* Create a TLV sub tree */
tlv_tree = proto_item_add_subtree(sti, ett_ancp_len);
for( ;num_tlvs; num_tlvs--) {
proto_tree_add_item(tlv_tree, hf_ancp_ext_tlv_type, tvb,
offset, 2, ENC_BIG_ENDIAN);
ttype = tvb_get_ntohs(tvb, offset);
offset += 2;
sti = proto_tree_add_item(tlv_tree, hf_ancp_len, tvb,
offset, 2, ENC_BIG_ENDIAN);
tlen = tvb_get_ntohs(tvb, offset);
offset += 2;
/*
* Extension Block is common for event message and port
* management message, but the TLVs that can appear
* are different
*/
switch (ttype) {
case TLV_DSL_LINE_ATTRIBUTES:
/* Create a DSL Attribute SubTree */
dsl_tree = proto_item_add_subtree(sti,
ett_ancp_ext_tlv_type);
num_stlvs = tlen / 8; /* TODO - better way? */
for ( ;num_stlvs; num_stlvs--) {
proto_tree_add_item(dsl_tree,
hf_ancp_dsl_line_stlv_type, tvb, offset,
2, ENC_BIG_ENDIAN);
stlvtype = tvb_get_ntohs(tvb, offset);
offset += 2;
/* Skip sub-tlv-len display for now */
stlvlen = tvb_get_ntohs(tvb, offset);
offset += 2; /* Sub TLV Length */
sti = proto_tree_add_item(dsl_tree,
hf_ancp_dsl_line_stlv_value, tvb, offset,
stlvlen, ENC_BIG_ENDIAN);
val = tvb_get_ntohl(tvb, offset);
offset += stlvlen; /* Except loop-encap, rest are 4B */
switch (stlvtype) {
case TLV_DSL_LINE_STATE:
proto_item_append_text(sti, " (%s)",
val_to_str(val, dsl_line_state_names,
"Unknown (0x%02x)"));
break;
case TLV_DSL_TYPE:
proto_item_append_text(sti, " (%s)",
val_to_str(val, dsl_line_type_names,
"Unknown (0x%02x)"));
break;
default:
/* Add Unit */
proto_item_append_text(sti, " %s",
val_to_str(stlvtype,
dsl_line_attr_units,
"Unknown (0x%02x)"));
break;
}
SKIPPADDING(offset, stlvlen);
}
break;
case TLV_PING_OPAQUE_DATA:
/* 2 32b values*/
proto_tree_add_item(tlv_tree, hf_ancp_oam_opaque,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(tlv_tree, hf_ancp_oam_opaque,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
break;
case TLV_PING_PARAMS:
/* Count (1B) Timeout (1B), 2B empty */
proto_tree_add_item(tlv_tree,
hf_ancp_oam_loopb_cnt, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(tlv_tree,
hf_ancp_oam_timeout, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* Lets not bother about 2B until IETF WG figures out */
offset += 2;
break;
default:
/* Assume TLV value is string - covers ALCID, OAM resp */
proto_tree_add_item(tlv_tree, hf_ancp_ext_tlv_value_str,
tvb, offset, tlen, ENC_ASCII|ENC_NA);
offset += tlen;
SKIPPADDING(offset, tlen);
break;
} /* end switch {ttype} */
} /* end for {numtlvs} */
} /* end if {DSL} */
}
static gint
dissect_ancp_tlv(tvbuff_t *tvb, proto_tree *tlv_tree, gint offset)
{
guint16 tlen, ttype;
gint16 num_stlvs;
proto_item *tti;
proto_tree_add_item(tlv_tree, hf_ancp_ext_tlv_type, tvb, offset, 2, ENC_BIG_ENDIAN);
ttype = tvb_get_ntohs(tvb, offset);
offset += 2;
tti = proto_tree_add_item(tlv_tree, hf_ancp_ext_tlv_len, tvb, offset, 2, ENC_BIG_ENDIAN);
tlen = tvb_get_ntohs(tvb, offset);
offset += 2;
/*
* Extension Block is common for event message and port
* management message, but the TLVs that can appear
* are different
*/
switch (ttype) {
case TLV_DSL_LINE_ATTRIBUTES:
{
proto_tree *dsl_tree;
guint16 stlvtype, stlvlen;
gint val;
/* Create a DSL Attribute SubTree */
dsl_tree = proto_item_add_subtree(tti, ett_ancp_ext_tlv_type);
num_stlvs = tlen / 8; /* TODO - better way? */
for ( ;num_stlvs; num_stlvs--) {
proto_tree_add_item(dsl_tree,
hf_ancp_dsl_line_stlv_type, tvb, offset,
2, ENC_BIG_ENDIAN);
stlvtype = tvb_get_ntohs(tvb, offset);
offset += 2;
proto_tree_add_item(dsl_tree,
hf_ancp_dsl_line_stlv_len, tvb, offset,
2, ENC_BIG_ENDIAN);
stlvlen = tvb_get_ntohs(tvb, offset);
offset += 2; /* Sub TLV Length */
tti = proto_tree_add_item(dsl_tree,
hf_ancp_dsl_line_stlv_value, tvb, offset,
stlvlen, ENC_BIG_ENDIAN);
val = tvb_get_ntohl(tvb, offset);
offset += stlvlen; /* Except loop-encap, rest are 4B */
switch (stlvtype) {
case TLV_DSL_LINE_STATE:
proto_item_append_text(tti, " (%s)",
val_to_str(val, dsl_line_state_names,
"Unknown (0x%02x)"));
break;
case TLV_DSL_TYPE:
proto_item_append_text(tti, " (%s)",
val_to_str(val, dsl_line_type_names,
"Unknown (0x%02x)"));
break;
default:
/* Add Unit */
proto_item_append_text(tti, " %s",
val_to_str(stlvtype,
dsl_line_attr_units,
"Unknown (0x%02x)"));
break;
}
SKIPPADDING(offset, stlvlen);
}
break;
}
case TLV_PING_OPAQUE_DATA:
/* 2 32b values*/
proto_tree_add_item(tlv_tree, hf_ancp_oam_opaque,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(tlv_tree, hf_ancp_oam_opaque,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
break;
case TLV_PING_PARAMS:
/* Count (1B) Timeout (1B), 2B empty */
proto_tree_add_item(tlv_tree,
hf_ancp_oam_loopb_cnt, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(tlv_tree,
hf_ancp_oam_timeout, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* Lets not bother about 2B until IETF WG figures out */
offset += 2;
break;
default:
/* Assume TLV value is string - covers ALCID, OAM resp */
proto_tree_add_item(tlv_tree, hf_ancp_ext_tlv_value_str,
tvb, offset, tlen, ENC_ASCII|ENC_NA);
offset += tlen;
SKIPPADDING(offset, tlen);
break;
} /* end switch {ttype} */
return offset;
}
