tg3: Assign rx ret producer indexes by vector
When RSS is enabled, the status block format changes slightly. The
"rx_jumbo_consumer", "reserved", and "rx_mini_consumer" members get
mapped to the other three rx return ring producer indexes. This patch
introduces a new per-interrupt member which identifies which location
in the status block a particular vector should look for return ring
updates.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 5782511..f71ea46 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -667,7 +667,7 @@
}
/* check for RX/TX work to do */
if (sblk->idx[0].tx_consumer != tnapi->tx_cons ||
- sblk->idx[0].rx_producer != tnapi->rx_rcb_ptr)
+ *(tnapi->rx_rcb_prod_idx) != tnapi->rx_rcb_ptr)
work_exists = 1;
return work_exists;
@@ -4518,7 +4518,7 @@
int received;
struct tg3_rx_prodring_set *tpr = &tp->prodring[0];
- hw_idx = tnapi->hw_status->idx[0].rx_producer;
+ hw_idx = *(tnapi->rx_rcb_prod_idx);
/*
* We need to order the read of hw_idx and the read of
* the opaque cookie.
@@ -4649,7 +4649,7 @@
/* Refresh hw_idx to see if there is new work */
if (sw_idx == hw_idx) {
- hw_idx = tnapi->hw_status->idx[0].rx_producer;
+ hw_idx = *(tnapi->rx_rcb_prod_idx);
rmb();
}
}
@@ -4711,7 +4711,7 @@
* All RX "locking" is done by ensuring outside
* code synchronizes with tg3->napi.poll()
*/
- if (sblk->idx[0].rx_producer != tnapi->rx_rcb_ptr)
+ if (*(tnapi->rx_rcb_prod_idx) != tnapi->rx_rcb_ptr)
work_done += tg3_rx(tnapi, budget - work_done);
return work_done;
@@ -5896,6 +5896,7 @@
for (i = 0; i < tp->irq_cnt; i++) {
struct tg3_napi *tnapi = &tp->napi[i];
+ struct tg3_hw_status *sblk;
tnapi->hw_status = pci_alloc_consistent(tp->pdev,
TG3_HW_STATUS_SIZE,
@@ -5904,6 +5905,28 @@
goto err_out;
memset(tnapi->hw_status, 0, TG3_HW_STATUS_SIZE);
+ sblk = tnapi->hw_status;
+
+ /*
+ * When RSS is enabled, the status block format changes
+ * slightly. The "rx_jumbo_consumer", "reserved",
+ * and "rx_mini_consumer" members get mapped to the
+ * other three rx return ring producer indexes.
+ */
+ switch (i) {
+ default:
+ tnapi->rx_rcb_prod_idx = &sblk->idx[0].rx_producer;
+ break;
+ case 2:
+ tnapi->rx_rcb_prod_idx = &sblk->rx_jumbo_consumer;
+ break;
+ case 3:
+ tnapi->rx_rcb_prod_idx = &sblk->reserved;
+ break;
+ case 4:
+ tnapi->rx_rcb_prod_idx = &sblk->rx_mini_consumer;
+ break;
+ }
/*
* If multivector RSS is enabled, vector 0 does not handle