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net/smc: Pass on DMBE bit mask in IRQ handler

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Make the DMBE bits, which are passed on individually in ism_move() as
parameter idx, available to the receiver.

Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Signed-off-by: Wenjia Zhang < wenjia@linux.ibm.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefan Raspl 2022-07-25 16:09:59 +02:00 committed by David S. Miller
parent 0a2f4f9893
commit 8b2fed8e27
3 changed files with 7 additions and 5 deletions
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4
drivers/s390/net/ism_drv.c
View File

@ -443,6 +443,7 @@ static irqreturn_t ism_handle_irq(int irq, void *data)
struct ism_dev *ism = data;
unsigned long bit, end;
unsigned long *bv;
u16 dmbemask;
bv = (void *) &ism->sba->dmb_bits[ISM_DMB_WORD_OFFSET];
end = sizeof(ism->sba->dmb_bits) * BITS_PER_BYTE - ISM_DMB_BIT_OFFSET;
@ -456,9 +457,10 @@ static irqreturn_t ism_handle_irq(int irq, void *data)
break;
clear_bit_inv(bit, bv);
dmbemask = ism->sba->dmbe_mask[bit + ISM_DMB_BIT_OFFSET];
ism->sba->dmbe_mask[bit + ISM_DMB_BIT_OFFSET] = 0;
barrier();
smcd_handle_irq(ism->smcd, bit + ISM_DMB_BIT_OFFSET);
smcd_handle_irq(ism->smcd, bit + ISM_DMB_BIT_OFFSET, dmbemask);
}
if (ism->sba->e) {

2
include/net/smc.h
View File

@ -101,5 +101,5 @@ int smcd_register_dev(struct smcd_dev *smcd);
void smcd_unregister_dev(struct smcd_dev *smcd);
void smcd_free_dev(struct smcd_dev *smcd);
void smcd_handle_event(struct smcd_dev *dev, struct smcd_event *event);
void smcd_handle_irq(struct smcd_dev *dev, unsigned int bit);
void smcd_handle_irq(struct smcd_dev *dev, unsigned int bit, u16 dmbemask);
#endif /* _SMC_H */

6
net/smc/smc_ism.c
View File

@ -508,13 +508,13 @@ void smcd_handle_event(struct smcd_dev *smcd, struct smcd_event *event)
EXPORT_SYMBOL_GPL(smcd_handle_event);
/* SMCD Device interrupt handler. Called from ISM device interrupt handler.
* Parameters are smcd device pointer and DMB number. Find the connection and
* schedule the tasklet for this connection.
* Parameters are smcd device pointer, DMB number, and the DMBE bitmask.
* Find the connection and schedule the tasklet for this connection.
*
* Context:
* - Function called in IRQ context from ISM device driver IRQ handler.
*/
void smcd_handle_irq(struct smcd_dev *smcd, unsigned int dmbno)
void smcd_handle_irq(struct smcd_dev *smcd, unsigned int dmbno, u16 dmbemask)
{
struct smc_connection *conn = NULL;
unsigned long flags;