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| author | Michael Chan <michael.chan@broadcom.com> | 2016-04-25 09:30:51 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-04-27 23:18:45 +0300 |
| commit | 89d0a06c516339c0a2b3d02677f5d6310b3319fb (patch) | |
| tree | 09e48f1ba0bfe519bc81483acf0f6cc48adeba44 /drivers/net/ethernet/broadcom/bnxt/bnxt.h | |
| parent | 2839f28bd5bf8fd2ab4a1ea3a5589c8f94364cbb (diff) | |
| download | linux-89d0a06c516339c0a2b3d02677f5d6310b3319fb.tar.xz | |
bnxt_en: Divide a page into 32K buffers for the aggregation ring if necessary.
If PAGE_SIZE is bigger than BNXT_RX_PAGE_SIZE, that means the native CPU
page is bigger than the maximum length of the RX BD. Divide the page
into multiple 32K buffers for the aggregation ring.
Add an offset field in the bnxt_sw_rx_agg_bd struct to keep track of the
page offset of each buffer. Since each page can be referenced by multiple
buffer entries, call get_page() as needed to get the proper reference
count.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt.h')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 0cf1e2a73179..8b823ff558ff 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -515,6 +515,7 @@ struct bnxt_sw_rx_bd { struct bnxt_sw_rx_agg_bd { struct page *page; + unsigned int offset; dma_addr_t mapping; }; @@ -595,6 +596,9 @@ struct bnxt_rx_ring_info { unsigned long *rx_agg_bmap; u16 rx_agg_bmap_size; + struct page *rx_page; + unsigned int rx_page_offset; + dma_addr_t rx_desc_mapping[MAX_RX_PAGES]; dma_addr_t rx_agg_desc_mapping[MAX_RX_AGG_PAGES]; |