From 8b2fed8e2712e8c23665df3c9e0fbabbb76e466c Mon Sep 17 00:00:00 2001 From: Stefan Raspl Date: Mon, 25 Jul 2022 16:09:59 +0200 Subject: [PATCH] net/smc: Pass on DMBE bit mask in IRQ handler Make the DMBE bits, which are passed on individually in ism_move() as parameter idx, available to the receiver. Signed-off-by: Stefan Raspl Signed-off-by: Wenjia Zhang < wenjia@linux.ibm.com> Reviewed-by: Tony Lu Signed-off-by: David S. Miller --- drivers/s390/net/ism_drv.c | 4 +++- include/net/smc.h | 2 +- net/smc/smc_ism.c | 6 +++--- 3 files changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/s390/net/ism_drv.c b/drivers/s390/net/ism_drv.c index 4665e9a0e048..d34bb6ec1490 100644 --- a/drivers/s390/net/ism_drv.c +++ b/drivers/s390/net/ism_drv.c @@ -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) { diff --git a/include/net/smc.h b/include/net/smc.h index 1868a5014dea..c926d3313e05 100644 --- a/include/net/smc.h +++ b/include/net/smc.h @@ -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 */ diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c index e51c0cdff8e0..911fe08bc54b 100644 --- a/net/smc/smc_ism.c +++ b/net/smc/smc_ism.c @@ -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;