From 34370d2435f9853ac882056faa98f3263c537c36 Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Wed, 8 Jul 2020 07:53:53 -0400 Subject: [PATCH] bnxt_en: Set up the chip specific RSS table size. 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 Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 12 ++++++++---- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 7 +++++++ 2 files changed, 15 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 6a884df..4afc1df 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -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; } diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 78e2fd6..5883b246 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -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; -- 2.7.4