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ID: 3608765 - ipmi_ekanalyzer.c - fix reading amc channel and link descriptors

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Due to a bug in gcc where unaligned bit fields were not packed correctly
before gcc 4.4, we changed the fru_picmgext_amc_channel_desc_record
and fru_picmgext_amc_link_desc_record structures to use
larger types to be packed correctly. This then requires
us to use the FRU_PICMGEXT_AMC_CHANNEL_DESC_RECORD_SIZE and
FRU_PICMGEXT_AMC_LINK_DESC_RECORD_SIZE defines instead of sizeof for
these structures.

Updated ipmi_ek_create_amc_p2p_record() and
ipmi_ek_display_amc_p2p_record() to read data in the correct byte order
on both big and little endian machines.

Commit for Dan Gora
This commit is contained in:
Zdenek Styblik 2013-04-22 09:50:53 +00:00
parent 2abad0e504
commit 3b77db9a86
1 changed files with 55 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

72
ipmitool/lib/ipmi_ekanalyzer.c
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@ -2240,8 +2240,8 @@ ipmi_ek_create_amc_p2p_record( struct ipmi_ek_multi_header * record,
/*Calculate link descriptor count*/
amc_record->link_desc_count = ( (record->header.len) - 8 -
(SIZE_OF_GUID*amc_record->guid_count) -
( sizeof(struct fru_picmgext_amc_channel_desc_record)*
amc_record->ch_count )
(FRU_PICMGEXT_AMC_CHANNEL_DESC_RECORD_SIZE *
amc_record->ch_count)
)/5 ;
}
else{
@ -2249,8 +2249,8 @@ ipmi_ek_create_amc_p2p_record( struct ipmi_ek_multi_header * record,
amc_record->ch_count = record->data[index_data++];
/*Calculate link descriptor count see spec AMC.0 for detail*/
amc_record->link_desc_count = ( (record->header.len) - 8 -
( sizeof(struct fru_picmgext_amc_channel_desc_record)*
amc_record->ch_count )
(FRU_PICMGEXT_AMC_CHANNEL_DESC_RECORD_SIZE *
amc_record->ch_count )
) / 5;
}
@ -2259,10 +2259,20 @@ ipmi_ek_create_amc_p2p_record( struct ipmi_ek_multi_header * record,
amc_record->ch_desc = malloc ( (amc_record->ch_count) * \
sizeof(struct fru_picmgext_amc_channel_desc_record));
for (ch_index = 0; ch_index < amc_record->ch_count; ch_index++){
memcpy(&amc_record->ch_desc[ch_index], &record->data[index_data],
sizeof(struct fru_picmgext_amc_channel_desc_record) );
unsigned int data;
struct fru_picmgext_amc_channel_desc_record *src, *dst;
data = record->data[index_data] |
(record->data[index_data + 1] << 8) |
(record->data[index_data + 2] << 16);
index_data += sizeof(struct fru_picmgext_amc_channel_desc_record) ;
src = (struct fru_picmgext_amc_channel_desc_record *) &data;
dst = (struct fru_picmgext_amc_channel_desc_record *)
&amc_record->ch_desc[ch_index];
dst->lane0port = src->lane0port;
dst->lane1port = src->lane1port;
dst->lane2port = src->lane2port;
dst->lane3port = src->lane3port;
index_data += FRU_PICMGEXT_AMC_CHANNEL_DESC_RECORD_SIZE;
}
}
if (amc_record->link_desc_count > 0){
@ -2270,9 +2280,27 @@ ipmi_ek_create_amc_p2p_record( struct ipmi_ek_multi_header * record,
amc_record->link_desc = malloc ( amc_record->link_desc_count *
sizeof(struct fru_picmgext_amc_link_desc_record) );
for (i = 0; i< amc_record->link_desc_count; i++ ){
memcpy (&amc_record->link_desc[i], &record->data[index_data],
sizeof(struct fru_picmgext_amc_link_desc_record) );
index_data += sizeof (struct fru_picmgext_amc_link_desc_record);
unsigned int data[2];
struct fru_picmgext_amc_link_desc_record *src, *dst;
data[0] = record->data[index_data] |
(record->data[index_data + 1] << 8) |
(record->data[index_data + 2] << 16) |
(record->data[index_data + 3] << 24);
data[1] = record->data[index_data + 4];
src = (struct fru_picmgext_amc_link_desc_record*) &data;
dst = (struct fru_picmgext_amc_link_desc_record*)
&amc_record->link_desc[i];
dst->channel_id = src->channel_id;
dst->port_flag_0 = src->port_flag_0;
dst->port_flag_1 = src->port_flag_1;
dst->port_flag_2 = src->port_flag_2;
dst->port_flag_3 = src->port_flag_3;
dst->type = src->type;
dst->type_ext = src->type_ext;
dst->group_id = src->group_id;
dst->asym_match = src->asym_match;
index_data += FRU_PICMGEXT_AMC_LINK_DESC_RECORD_SIZE;
}
}
else{
@ -3616,31 +3644,41 @@ ipmi_ek_display_amc_p2p_record( struct ipmi_ek_multi_header * record )
if ( ch_count > 0 ){
for ( index = 0; index < ch_count; index++ ){
unsigned int data;
struct fru_picmgext_amc_channel_desc_record * ch_desc;
printf(" AMC Channel Descriptor {%02x%02x%02x}\n",
record->data[index_data+2], record->data[index_data+1],
record->data[index_data]
);
data = record->data[index_data] |
(record->data[index_data + 1] << 8) |
(record->data[index_data + 2] << 16);
/*Warning: For gcc version between 4.0 and 4.3 this code doesnt work*/
ch_desc = ( struct fru_picmgext_amc_channel_desc_record * )\
&record->data[index_data];
ch_desc = ( struct fru_picmgext_amc_channel_desc_record * ) &data;
printf(" Lane 0 Port: 0x%02x\n", ch_desc->lane0port);
printf(" Lane 1 Port: 0x%02x\n", ch_desc->lane1port);
printf(" Lane 2 Port: 0x%02x\n", ch_desc->lane2port);
printf(" Lane 3 Port: 0x%02x\n\n", ch_desc->lane3port);
index_data += sizeof (struct fru_picmgext_amc_channel_desc_record) ;
index_data += FRU_PICMGEXT_AMC_CHANNEL_DESC_RECORD_SIZE;
}
}
while ( index_data < record->header.len ){
/*Warning: For gcc version between 4.0 and 4.3 this code doesnt work*/
struct fru_picmgext_amc_link_desc_record * link_desc =
(struct fru_picmgext_amc_link_desc_record *)&record->data[index_data];
unsigned int data[2];
struct fru_picmgext_amc_link_desc_record *link_desc;
data[0] = record->data[index_data] |
(record->data[index_data + 1] << 8) |
(record->data[index_data + 2] << 16) |
(record->data[index_data + 3] << 24);
data[1] = record->data[index_data + 4];
link_desc = (struct fru_picmgext_amc_link_desc_record *) &data[0];
printf(" AMC Link Descriptor:\n" );
printf("\t- Link Type: %s \n",
val2str (link_desc->type, ipmi_ekanalyzer_link_type));
switch ( link_desc->type ){
switch ( link_desc->type ) {
case FRU_PICMGEXT_AMC_LINK_TYPE_PCIE:
case FRU_PICMGEXT_AMC_LINK_TYPE_PCIE_AS1:
case FRU_PICMGEXT_AMC_LINK_TYPE_PCIE_AS2:
@ -3678,7 +3716,7 @@ ipmi_ek_display_amc_p2p_record( struct ipmi_ek_multi_header * record )
printf("\t\t Lane 1: %s\n", (link_desc->port_flag_1)?"enable":"disable");
printf("\t\t Lane 2: %s\n", (link_desc->port_flag_2)?"enable":"disable");
printf("\t\t Lane 3: %s\n", (link_desc->port_flag_3)?"enable":"disable");
index_data += sizeof (struct fru_picmgext_amc_link_desc_record);
index_data += FRU_PICMGEXT_AMC_LINK_DESC_RECORD_SIZE;
}
}