admin/libiscsi
1
0
Fork 0
Code Issues Pull Requests Actions 2 Packages Projects Releases Wiki Activity

pdu: move update of maxcmdsn, expcmdsn & statsn to iscsi_process_pdu

Browse Source 
Signed-off-by: Peter Lieven <pl@kamp.de>
This commit is contained in:
Peter Lieven
2015-04-20 14:46:44 +02:00
parent 1f6d901324
commit b3ad565783
6 changed files with 24 additions and 59 deletions
Download Patch File Download Diff File Expand all files Collapse all files

57
lib/pdu.c
View File

@@ -69,31 +69,6 @@ iscsi_itt_post_increment(struct iscsi_context *iscsi) {
return old_itt;
}
void iscsi_adjust_statsn(struct iscsi_context *iscsi, struct iscsi_in_pdu *in) {
uint32_t statsn = scsi_get_uint32(&in->hdr[24]);
uint32_t itt = scsi_get_uint32(&in->hdr[16]);
if (itt == 0xffffffff) {
/* target will not increase statsn if itt == 0xffffffff */
statsn--;
}
if (iscsi_serial32_compare(statsn, iscsi->statsn) > 0) {
iscsi->statsn = statsn;
}
}
void iscsi_adjust_maxexpcmdsn(struct iscsi_context *iscsi, struct iscsi_in_pdu *in) {
uint32_t maxcmdsn = scsi_get_uint32(&in->hdr[32]);
if (iscsi_serial32_compare(maxcmdsn, iscsi->maxcmdsn) > 0) {
iscsi->maxcmdsn = maxcmdsn;
}
uint32_t expcmdsn = scsi_get_uint32(&in->hdr[28]);
if (iscsi_serial32_compare(expcmdsn, iscsi->expcmdsn) > 0) {
iscsi->expcmdsn = expcmdsn;
}
}
void iscsi_dump_pdu_header(struct iscsi_context *iscsi, unsigned char *data) {
char dump[ISCSI_RAW_HEADER_SIZE*3+1]={0};
int i;
@@ -323,9 +298,6 @@ int iscsi_process_target_nop_in(struct iscsi_context *iscsi,
uint32_t itt = scsi_get_uint32(&in->hdr[16]);
uint32_t lun = scsi_get_uint16(&in->hdr[8]);
iscsi_adjust_statsn(iscsi, in);
iscsi_adjust_maxexpcmdsn(iscsi, in);
ISCSI_LOG(iscsi, (iscsi->nops_in_flight > 1) ? 1 : 6,
"NOP-In received (pdu->itt %08x, pdu->ttt %08x, pdu->lun %8x, iscsi->maxcmdsn %08x, iscsi->expcmdsn %08x, iscsi->statsn %08x)",
itt, ttt, lun, iscsi->maxcmdsn, iscsi->expcmdsn, iscsi->statsn);
@@ -407,20 +379,35 @@ int iscsi_process_reject(struct iscsi_context *iscsi,
int
iscsi_process_pdu(struct iscsi_context *iscsi, struct iscsi_in_pdu *in)
{
uint32_t itt;
enum iscsi_opcode opcode;
uint32_t itt = scsi_get_uint32(&in->hdr[16]);
uint32_t statsn = scsi_get_uint32(&in->hdr[24]);
uint32_t maxcmdsn = scsi_get_uint32(&in->hdr[32]);
uint32_t expcmdsn = scsi_get_uint32(&in->hdr[28]);
enum iscsi_opcode opcode = in->hdr[0] & 0x3f;
uint8_t ahslen = in->hdr[4];
struct iscsi_pdu *pdu;
uint8_t ahslen;
opcode = in->hdr[0] & 0x3f;
ahslen = in->hdr[4];
itt = scsi_get_uint32(&in->hdr[16]);
if (ahslen != 0) {
iscsi_set_error(iscsi, "cant handle expanded headers yet");
return -1;
}
/* All target PDUs expect update the serials */
if (itt == 0xffffffff) {
/* target will not increase statsn if itt == 0xffffffff */
statsn--;
}
if (iscsi_serial32_compare(statsn, iscsi->statsn) > 0) {
iscsi->statsn = statsn;
}
if (iscsi_serial32_compare(maxcmdsn, iscsi->maxcmdsn) > 0) {
iscsi->maxcmdsn = maxcmdsn;
}
if (iscsi_serial32_compare(expcmdsn, iscsi->expcmdsn) > 0) {
iscsi->expcmdsn = expcmdsn;
}
if (opcode == ISCSI_PDU_ASYNC_MSG) {
uint8_t event = in->hdr[36];
uint16_t param1 = scsi_get_uint16(&in->hdr[38]);