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bnxt_en: Set up the chip specific RSS table size.

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Currently, we allocate one page for the hardware DMA RSS indirection
table.  While the size is currently big enough for all chips, future
chip variations may support bigger sizes, so it is better to calculate
and store the chip specific size and allocate accordingly.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2020-07-08 07:53:53 -04:00 committed by David S. Miller
parent e80a07b244
commit 34370d2435
2 changed files with 15 additions and 4 deletions
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12
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -3538,7 +3538,7 @@ static void bnxt_free_vnic_attributes(struct bnxt *bp)
}
if (vnic->rss_table) {
dma_free_coherent(&pdev->dev, PAGE_SIZE,
dma_free_coherent(&pdev->dev, vnic->rss_table_size,
vnic->rss_table,
vnic->rss_table_dma_addr);
vnic->rss_table = NULL;
@ -3603,7 +3603,13 @@ vnic_skip_grps:
continue;
/* Allocate rss table and hash key */
vnic->rss_table = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
size = L1_CACHE_ALIGN(HW_HASH_INDEX_SIZE * sizeof(u16));
if (bp->flags & BNXT_FLAG_CHIP_P5)
size = L1_CACHE_ALIGN(BNXT_MAX_RSS_TABLE_SIZE_P5);
vnic->rss_table_size = size + HW_HASH_KEY_SIZE;
vnic->rss_table = dma_alloc_coherent(&pdev->dev,
vnic->rss_table_size,
&vnic->rss_table_dma_addr,
GFP_KERNEL);
if (!vnic->rss_table) {
@ -3611,8 +3617,6 @@ vnic_skip_grps:
goto out;
}
size = L1_CACHE_ALIGN(HW_HASH_INDEX_SIZE * sizeof(u16));
vnic->rss_hash_key = ((void *)vnic->rss_table) + size;
vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr + size;
}

7
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -1017,6 +1017,13 @@ struct bnxt_vnic_info {
__le16 *rss_table;
dma_addr_t rss_hash_key_dma_addr;
u64 *rss_hash_key;
int rss_table_size;
#define BNXT_RSS_TABLE_ENTRIES_P5 64
#define BNXT_RSS_TABLE_SIZE_P5 (BNXT_RSS_TABLE_ENTRIES_P5 * 4)
#define BNXT_RSS_TABLE_MAX_TBL_P5 8
#define BNXT_MAX_RSS_TABLE_SIZE_P5 \
(BNXT_RSS_TABLE_SIZE_P5 * BNXT_RSS_TABLE_MAX_TBL_P5)
u32 rx_mask;
u8 *mc_list;