diff options
| author | Jose Abreu <Jose.Abreu@synopsys.com> | 2019-07-09 10:03:00 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-07-09 12:20:08 -0700 |
| commit | 2af6106ae949651d529c8c3f0734c3a7babd0d4b (patch) | |
| tree | da32c00b9208e27b5f109d917e4c0a0ab9a9d8dd /drivers/net/ethernet/stmicro/stmmac/stmmac.h | |
| parent | 06a80a7d09cc3fbecbd44e225e825a37fb806836 (diff) | |
net: stmmac: Introducing support for Page Pool
Mapping and unmapping DMA region is an high bottleneck in stmmac driver,
specially in the RX path.
This commit introduces support for Page Pool API and uses it in all RX
queues. With this change, we get more stable troughput and some increase
of banwidth with iperf:
- MAC1000 - 950 Mbps
- XGMAC: 9.22 Gbps
Changes from v3:
- Use page_pool_destroy() (Ilias)
Changes from v2:
- Uncoditionally call page_pool_free() (Jesper)
Changes from v1:
- Use page_pool_get_dma_addr() (Jesper)
- Add a comment (Jesper)
- Add page_pool_free() call (Jesper)
- Reintroduce sync_single_for_device (Arnd / Ilias)
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac.h')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h index 513f4e2df5f6..5cd966c154f3 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h @@ -20,6 +20,7 @@ #include <linux/ptp_clock_kernel.h> #include <linux/net_tstamp.h> #include <linux/reset.h> +#include <net/page_pool.h> struct stmmac_resources { void __iomem *addr; @@ -54,14 +55,19 @@ struct stmmac_tx_queue { u32 mss; }; +struct stmmac_rx_buffer { + struct page *page; + dma_addr_t addr; +}; + struct stmmac_rx_queue { u32 rx_count_frames; u32 queue_index; + struct page_pool *page_pool; + struct stmmac_rx_buffer *buf_pool; struct stmmac_priv *priv_data; struct dma_extended_desc *dma_erx; struct dma_desc *dma_rx ____cacheline_aligned_in_smp; - struct sk_buff **rx_skbuff; - dma_addr_t *rx_skbuff_dma; unsigned int cur_rx; unsigned int dirty_rx; u32 rx_zeroc_thresh; |