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| author | Giuseppe Cavallaro <peppe.cavallaro@st.com> | 2016-02-29 16:27:38 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-03-02 22:21:33 +0300 |
| commit | 0e80bdc9a72df3b31a9fc2012102a6cc8d664e93 (patch) | |
| tree | c83e948287802fa31a5b298a4b5fc6aec7342670 /drivers/net/ethernet/stmicro/stmmac/common.h | |
| parent | fbc80823a93c57f2310dacfabfea6c76424552b6 (diff) | |
| download | linux-0e80bdc9a72df3b31a9fc2012102a6cc8d664e93.tar.xz | |
stmmac: first frame prep at the end of xmit routine
This patch is to fill the first descriptor just before granting
the DMA engine so at the end of the xmit.
The patch takes care about the algorithm adopted to mitigate the
interrupts, then it fixes the last segment in case of no fragments.
Moreover, this new implementation does not pass any "ter" field when
prepare the descriptors because this is not necessary.
The patch also details the memory barrier in the xmit.
As final results, this patch guarantees the same performances
but fixing a case if small datagram are sent. In fact, this
kind of test is impacted if no coalesce is done.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/common.h')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/common.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h index 7ccb147710fd..f96d257308b0 100644 --- a/drivers/net/ethernet/stmicro/stmmac/common.h +++ b/drivers/net/ethernet/stmicro/stmmac/common.h @@ -100,7 +100,7 @@ struct stmmac_extra_stats { unsigned long napi_poll; unsigned long tx_normal_irq_n; unsigned long tx_clean; - unsigned long tx_reset_ic_bit; + unsigned long tx_set_ic_bit; unsigned long irq_receive_pmt_irq_n; /* MMC info */ unsigned long mmc_tx_irq_n; @@ -347,7 +347,7 @@ struct stmmac_desc_ops { /* Invoked by the xmit function to prepare the tx descriptor */ void (*prepare_tx_desc) (struct dma_desc *p, int is_fs, int len, bool csum_flag, int mode, bool tx_own, - bool ls_ic); + bool ls); /* Set/get the owner of the descriptor */ void (*set_tx_owner) (struct dma_desc *p); int (*get_tx_owner) (struct dma_desc *p); @@ -355,7 +355,7 @@ struct stmmac_desc_ops { void (*release_tx_desc) (struct dma_desc *p, int mode); /* Clear interrupt on tx frame completion. When this bit is * set an interrupt happens as soon as the frame is transmitted */ - void (*clear_tx_ic) (struct dma_desc *p); + void (*set_tx_ic)(struct dma_desc *p); /* Last tx segment reports the transmit status */ int (*get_tx_ls) (struct dma_desc *p); /* Return the transmit status looking at the TDES1 */ |