diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2009-03-04 10:01:57 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-03-04 17:40:25 -0800 |
| commit | 2c3c3d02f28801d7ad2da4952b2c7ca6621ef221 (patch) | |
| tree | b733d0bbcd79e59235f47f6f9bf3b981e26683f0 /drivers/net/sfc/falcon.c | |
| parent | 4720bc6cfe70b606cf62a244c7a5391e59923e45 (diff) | |
sfc: Improve NIC internal error recovery
Make the error count a per-NIC variable.
Reset this the count after an hour if it has not reached the critical value.
Set the critical value back to 5.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/sfc/falcon.c')
| -rw-r--r-- | drivers/net/sfc/falcon.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c index 82c10f4de1b..2ae51fd6f9c 100644 --- a/drivers/net/sfc/falcon.c +++ b/drivers/net/sfc/falcon.c @@ -39,11 +39,16 @@ * @next_buffer_table: First available buffer table id * @pci_dev2: The secondary PCI device if present * @i2c_data: Operations and state for I2C bit-bashing algorithm + * @int_error_count: Number of internal errors seen recently + * @int_error_expire: Time at which error count will be expired */ struct falcon_nic_data { unsigned next_buffer_table; struct pci_dev *pci_dev2; struct i2c_algo_bit_data i2c_data; + + unsigned int_error_count; + unsigned long int_error_expire; }; /************************************************************************** @@ -119,8 +124,12 @@ MODULE_PARM_DESC(rx_xon_thresh_bytes, "RX fifo XON threshold"); #define FALCON_EVQ_SIZE 4096 #define FALCON_EVQ_MASK (FALCON_EVQ_SIZE - 1) -/* Max number of internal errors. After this resets will not be performed */ -#define FALCON_MAX_INT_ERRORS 4 +/* If FALCON_MAX_INT_ERRORS internal errors occur within + * FALCON_INT_ERROR_EXPIRE seconds, we consider the NIC broken and + * disable it. + */ +#define FALCON_INT_ERROR_EXPIRE 3600 +#define FALCON_MAX_INT_ERRORS 5 /* We poll for events every FLUSH_INTERVAL ms, and check FLUSH_POLL_COUNT times */ @@ -1374,7 +1383,6 @@ static irqreturn_t falcon_fatal_interrupt(struct efx_nic *efx) efx_oword_t *int_ker = efx->irq_status.addr; efx_oword_t fatal_intr; int error, mem_perr; - static int n_int_errors; falcon_read(efx, &fatal_intr, FATAL_INTR_REG_KER); error = EFX_OWORD_FIELD(fatal_intr, INT_KER_ERROR); @@ -1401,7 +1409,14 @@ static irqreturn_t falcon_fatal_interrupt(struct efx_nic *efx) pci_clear_master(nic_data->pci_dev2); falcon_disable_interrupts(efx); - if (++n_int_errors < FALCON_MAX_INT_ERRORS) { + /* Count errors and reset or disable the NIC accordingly */ + if (nic_data->int_error_count == 0 || + time_after(jiffies, nic_data->int_error_expire)) { + nic_data->int_error_count = 0; + nic_data->int_error_expire = + jiffies + FALCON_INT_ERROR_EXPIRE * HZ; + } + if (++nic_data->int_error_count < FALCON_MAX_INT_ERRORS) { EFX_ERR(efx, "SYSTEM ERROR - reset scheduled\n"); efx_schedule_reset(efx, RESET_TYPE_INT_ERROR); } else { |