diff options
Diffstat (limited to 'drivers/net/ixgbe')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_main.c | 78 |
1 files changed, 47 insertions, 31 deletions
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index 1aa9f6a5adf..c407bd9de0d 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -1970,6 +1970,50 @@ static u32 ixgbe_setup_mrqc(struct ixgbe_adapter *adapter) } /** + * ixgbe_configure_rscctl - enable RSC for the indicated ring + * @adapter: address of board private structure + * @index: index of ring to set + * @rx_buf_len: rx buffer length + **/ +static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter, int index, + int rx_buf_len) +{ + struct ixgbe_ring *rx_ring; + struct ixgbe_hw *hw = &adapter->hw; + int j; + u32 rscctrl; + + rx_ring = &adapter->rx_ring[index]; + j = rx_ring->reg_idx; + rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(j)); + rscctrl |= IXGBE_RSCCTL_RSCEN; + /* + * we must limit the number of descriptors so that the + * total size of max desc * buf_len is not greater + * than 65535 + */ + if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) { +#if (MAX_SKB_FRAGS > 16) + rscctrl |= IXGBE_RSCCTL_MAXDESC_16; +#elif (MAX_SKB_FRAGS > 8) + rscctrl |= IXGBE_RSCCTL_MAXDESC_8; +#elif (MAX_SKB_FRAGS > 4) + rscctrl |= IXGBE_RSCCTL_MAXDESC_4; +#else + rscctrl |= IXGBE_RSCCTL_MAXDESC_1; +#endif + } else { + if (rx_buf_len < IXGBE_RXBUFFER_4096) + rscctrl |= IXGBE_RSCCTL_MAXDESC_16; + else if (rx_buf_len < IXGBE_RXBUFFER_8192) + rscctrl |= IXGBE_RSCCTL_MAXDESC_8; + else + rscctrl |= IXGBE_RSCCTL_MAXDESC_4; + } + IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(j), rscctrl); +} + +/** * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset * @adapter: board private structure * @@ -1990,7 +2034,6 @@ static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) u32 fctrl, hlreg0; u32 reta = 0, mrqc = 0; u32 rdrxctl; - u32 rscctrl; int rx_buf_len; /* Decide whether to use packet split mode or not */ @@ -2148,36 +2191,9 @@ static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) { /* Enable 82599 HW-RSC */ - for (i = 0; i < adapter->num_rx_queues; i++) { - rx_ring = &adapter->rx_ring[i]; - j = rx_ring->reg_idx; - rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(j)); - rscctrl |= IXGBE_RSCCTL_RSCEN; - /* - * we must limit the number of descriptors so that the - * total size of max desc * buf_len is not greater - * than 65535 - */ - if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) { -#if (MAX_SKB_FRAGS > 16) - rscctrl |= IXGBE_RSCCTL_MAXDESC_16; -#elif (MAX_SKB_FRAGS > 8) - rscctrl |= IXGBE_RSCCTL_MAXDESC_8; -#elif (MAX_SKB_FRAGS > 4) - rscctrl |= IXGBE_RSCCTL_MAXDESC_4; -#else - rscctrl |= IXGBE_RSCCTL_MAXDESC_1; -#endif - } else { - if (rx_buf_len < IXGBE_RXBUFFER_4096) - rscctrl |= IXGBE_RSCCTL_MAXDESC_16; - else if (rx_buf_len < IXGBE_RXBUFFER_8192) - rscctrl |= IXGBE_RSCCTL_MAXDESC_8; - else - rscctrl |= IXGBE_RSCCTL_MAXDESC_4; - } - IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(j), rscctrl); - } + for (i = 0; i < adapter->num_rx_queues; i++) + ixgbe_configure_rscctl(adapter, i, rx_buf_len); + /* Disable RSC for ACK packets */ IXGBE_WRITE_REG(hw, IXGBE_RSCDBU, (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU))); |