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ehea: error handling improvement 

Reset a port's resources only if they're actually in an error state

Signed-off-by: Thomas Klein <tklein@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Klein 2010-04-20 23:10:55 +00:00 committed by David S. Miller
parent a1aa8822d5
commit ea96ceac80
3 changed files with 62 additions and 26 deletions
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31
drivers/net/ehea/ehea_main.c
View File

@ -791,11 +791,17 @@ static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
cqe_counter++;
rmb();
if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
ehea_error("Send Completion Error: Resetting port");
ehea_error("Bad send completion status=0x%04X",
cqe->status);
if (netif_msg_tx_err(pr->port))
ehea_dump(cqe, sizeof(*cqe), "Send CQE");
ehea_schedule_port_reset(pr->port);
break;
if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
ehea_error("Resetting port");
ehea_schedule_port_reset(pr->port);
break;
}
}
if (netif_msg_tx_done(pr->port))
@ -901,6 +907,8 @@ static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
struct ehea_eqe *eqe;
struct ehea_qp *qp;
u32 qp_token;
u64 resource_type, aer, aerr;
int reset_port = 0;
eqe = ehea_poll_eq(port->qp_eq);
@ -910,11 +918,24 @@ static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
eqe->entry, qp_token);
qp = port->port_res[qp_token].qp;
ehea_error_data(port->adapter, qp->fw_handle);
resource_type = ehea_error_data(port->adapter, qp->fw_handle,
&aer, &aerr);
if (resource_type == EHEA_AER_RESTYPE_QP) {
if ((aer & EHEA_AER_RESET_MASK) ||
(aerr & EHEA_AERR_RESET_MASK))
reset_port = 1;
} else
reset_port = 1; /* Reset in case of CQ or EQ error */
eqe = ehea_poll_eq(port->qp_eq);
}
ehea_schedule_port_reset(port);
if (reset_port) {
ehea_error("Resetting port");
ehea_schedule_port_reset(port);
}
return IRQ_HANDLED;
}

43
drivers/net/ehea/ehea_qmr.c
View File

@ -229,14 +229,14 @@ u64 ehea_destroy_cq_res(struct ehea_cq *cq, u64 force)
int ehea_destroy_cq(struct ehea_cq *cq)
{
u64 hret;
u64 hret, aer, aerr;
if (!cq)
return 0;
hcp_epas_dtor(&cq->epas);
hret = ehea_destroy_cq_res(cq, NORMAL_FREE);
if (hret == H_R_STATE) {
ehea_error_data(cq->adapter, cq->fw_handle);
ehea_error_data(cq->adapter, cq->fw_handle, &aer, &aerr);
hret = ehea_destroy_cq_res(cq, FORCE_FREE);
}
@ -357,7 +357,7 @@ u64 ehea_destroy_eq_res(struct ehea_eq *eq, u64 force)
int ehea_destroy_eq(struct ehea_eq *eq)
{
u64 hret;
u64 hret, aer, aerr;
if (!eq)
return 0;
@ -365,7 +365,7 @@ int ehea_destroy_eq(struct ehea_eq *eq)
hret = ehea_destroy_eq_res(eq, NORMAL_FREE);
if (hret == H_R_STATE) {
ehea_error_data(eq->adapter, eq->fw_handle);
ehea_error_data(eq->adapter, eq->fw_handle, &aer, &aerr);
hret = ehea_destroy_eq_res(eq, FORCE_FREE);
}
@ -540,7 +540,7 @@ u64 ehea_destroy_qp_res(struct ehea_qp *qp, u64 force)
int ehea_destroy_qp(struct ehea_qp *qp)
{
u64 hret;
u64 hret, aer, aerr;
if (!qp)
return 0;
@ -548,7 +548,7 @@ int ehea_destroy_qp(struct ehea_qp *qp)
hret = ehea_destroy_qp_res(qp, NORMAL_FREE);
if (hret == H_R_STATE) {
ehea_error_data(qp->adapter, qp->fw_handle);
ehea_error_data(qp->adapter, qp->fw_handle, &aer, &aerr);
hret = ehea_destroy_qp_res(qp, FORCE_FREE);
}
@ -986,42 +986,45 @@ void print_error_data(u64 *data)
if (length > EHEA_PAGESIZE)
length = EHEA_PAGESIZE;
if (type == 0x8) /* Queue Pair */
if (type == EHEA_AER_RESTYPE_QP)
ehea_error("QP (resource=%llX) state: AER=0x%llX, AERR=0x%llX, "
"port=%llX", resource, data[6], data[12], data[22]);
if (type == 0x4) /* Completion Queue */
else if (type == EHEA_AER_RESTYPE_CQ)
ehea_error("CQ (resource=%llX) state: AER=0x%llX", resource,
data[6]);
if (type == 0x3) /* Event Queue */
else if (type == EHEA_AER_RESTYPE_EQ)
ehea_error("EQ (resource=%llX) state: AER=0x%llX", resource,
data[6]);
ehea_dump(data, length, "error data");
}
void ehea_error_data(struct ehea_adapter *adapter, u64 res_handle)
u64 ehea_error_data(struct ehea_adapter *adapter, u64 res_handle,
u64 *aer, u64 *aerr)
{
unsigned long ret;
u64 *rblock;
u64 type = 0;
rblock = (void *)get_zeroed_page(GFP_KERNEL);
if (!rblock) {
ehea_error("Cannot allocate rblock memory.");
return;
goto out;
}
ret = ehea_h_error_data(adapter->handle,
res_handle,
rblock);
ret = ehea_h_error_data(adapter->handle, res_handle, rblock);
if (ret == H_R_STATE)
ehea_error("No error data is available: %llX.", res_handle);
else if (ret == H_SUCCESS)
if (ret == H_SUCCESS) {
type = EHEA_BMASK_GET(ERROR_DATA_TYPE, rblock[2]);
*aer = rblock[6];
*aerr = rblock[12];
print_error_data(rblock);
else
} else if (ret == H_R_STATE) {
ehea_error("No error data available: %llX.", res_handle);
} else
ehea_error("Error data could not be fetched: %llX", res_handle);
free_page((unsigned long)rblock);
out:
return type;
}

14
drivers/net/ehea/ehea_qmr.h
View File

@ -154,6 +154,9 @@ struct ehea_rwqe {
#define EHEA_CQE_STAT_ERR_IP 0x2000
#define EHEA_CQE_STAT_ERR_CRC 0x1000
/* Defines which bad send cqe stati lead to a port reset */
#define EHEA_CQE_STAT_RESET_MASK 0x0002
struct ehea_cqe {
u64 wr_id; /* work request ID from WQE */
u8 type;
@ -187,6 +190,14 @@ struct ehea_cqe {
#define EHEA_EQE_SM_MECH_NUMBER EHEA_BMASK_IBM(48, 55)
#define EHEA_EQE_SM_PORT_NUMBER EHEA_BMASK_IBM(56, 63)
#define EHEA_AER_RESTYPE_QP 0x8
#define EHEA_AER_RESTYPE_CQ 0x4
#define EHEA_AER_RESTYPE_EQ 0x3
/* Defines which affiliated errors lead to a port reset */
#define EHEA_AER_RESET_MASK 0xFFFFFFFFFEFFFFFFULL
#define EHEA_AERR_RESET_MASK 0xFFFFFFFFFFFFFFFFULL
struct ehea_eqe {
u64 entry;
};
@ -379,7 +390,8 @@ int ehea_gen_smr(struct ehea_adapter *adapter, struct ehea_mr *old_mr,
int ehea_rem_mr(struct ehea_mr *mr);
void ehea_error_data(struct ehea_adapter *adapter, u64 res_handle);
u64 ehea_error_data(struct ehea_adapter *adapter, u64 res_handle,
u64 *aer, u64 *aerr);
int ehea_add_sect_bmap(unsigned long pfn, unsigned long nr_pages);
int ehea_rem_sect_bmap(unsigned long pfn, unsigned long nr_pages);