diff options
Diffstat (limited to 'drivers/net/ethernet/cadence')
| -rw-r--r-- | drivers/net/ethernet/cadence/macb.c | 36 | ||||
| -rw-r--r-- | drivers/net/ethernet/cadence/macb.h | 19 |
2 files changed, 51 insertions, 4 deletions
diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index cc36269474a6..6836f88dbdc6 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -765,6 +765,10 @@ static int gem_rx(struct macb *bp, int budget) skb->protocol = eth_type_trans(skb, bp->dev); skb_checksum_none_assert(skb); + if (bp->dev->features & NETIF_F_RXCSUM && + !(bp->dev->flags & IFF_PROMISC) && + GEM_BFEXT(RX_CSUM, ctrl) & GEM_RX_CSUM_CHECKED_MASK) + skb->ip_summed = CHECKSUM_UNNECESSARY; bp->stats.rx_packets++; bp->stats.rx_bytes += skb->len; @@ -1549,6 +1553,8 @@ static void macb_init_hw(struct macb *bp) config |= MACB_BIT(BIG); /* Receive oversized frames */ if (bp->dev->flags & IFF_PROMISC) config |= MACB_BIT(CAF); /* Copy All Frames */ + else if (macb_is_gem(bp) && bp->dev->features & NETIF_F_RXCSUM) + config |= GEM_BIT(RXCOEN); if (!(bp->dev->flags & IFF_BROADCAST)) config |= MACB_BIT(NBC); /* No BroadCast */ config |= macb_dbw(bp); @@ -1662,13 +1668,22 @@ void macb_set_rx_mode(struct net_device *dev) cfg = macb_readl(bp, NCFGR); - if (dev->flags & IFF_PROMISC) + if (dev->flags & IFF_PROMISC) { /* Enable promiscuous mode */ cfg |= MACB_BIT(CAF); - else if (dev->flags & (~IFF_PROMISC)) - /* Disable promiscuous mode */ + + /* Disable RX checksum offload */ + if (macb_is_gem(bp)) + cfg &= ~GEM_BIT(RXCOEN); + } else { + /* Disable promiscuous mode */ cfg &= ~MACB_BIT(CAF); + /* Enable RX checksum offload only if requested */ + if (macb_is_gem(bp) && dev->features & NETIF_F_RXCSUM) + cfg |= GEM_BIT(RXCOEN); + } + if (dev->flags & IFF_ALLMULTI) { /* Enable all multicast mode */ macb_or_gem_writel(bp, HRB, -1); @@ -1947,6 +1962,19 @@ static int macb_set_features(struct net_device *netdev, gem_writel(bp, DMACFG, dmacfg); } + /* RX checksum offload */ + if ((changed & NETIF_F_RXCSUM) && macb_is_gem(bp)) { + u32 netcfg; + + netcfg = gem_readl(bp, NCFGR); + if (features & NETIF_F_RXCSUM && + !(netdev->flags & IFF_PROMISC)) + netcfg |= GEM_BIT(RXCOEN); + else + netcfg &= ~GEM_BIT(RXCOEN); + gem_writel(bp, NCFGR, netcfg); + } + return 0; } @@ -2150,7 +2178,7 @@ static int __init macb_probe(struct platform_device *pdev) dev->hw_features = NETIF_F_SG; /* Checksum offload is only available on gem with packet buffer */ if (macb_is_gem(bp) && !(bp->caps & MACB_CAPS_FIFO_MODE)) - dev->hw_features |= NETIF_F_HW_CSUM; + dev->hw_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM; if (bp->caps & MACB_CAPS_SG_DISABLED) dev->hw_features &= ~NETIF_F_SG; dev->features = dev->hw_features; diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h index 7bf82856043e..517c09d72c4a 100644 --- a/drivers/net/ethernet/cadence/macb.h +++ b/drivers/net/ethernet/cadence/macb.h @@ -164,6 +164,8 @@ #define GEM_CLK_SIZE 3 #define GEM_DBW_OFFSET 21 #define GEM_DBW_SIZE 2 +#define GEM_RXCOEN_OFFSET 24 +#define GEM_RXCOEN_SIZE 1 /* Constants for data bus width. */ #define GEM_DBW32 0 @@ -452,6 +454,14 @@ struct macb_dma_desc { #define MACB_RX_BROADCAST_OFFSET 31 #define MACB_RX_BROADCAST_SIZE 1 +/* RX checksum offload disabled: bit 24 clear in NCFGR */ +#define GEM_RX_TYPEID_MATCH_OFFSET 22 +#define GEM_RX_TYPEID_MATCH_SIZE 2 + +/* RX checksum offload enabled: bit 24 set in NCFGR */ +#define GEM_RX_CSUM_OFFSET 22 +#define GEM_RX_CSUM_SIZE 2 + #define MACB_TX_FRMLEN_OFFSET 0 #define MACB_TX_FRMLEN_SIZE 11 #define MACB_TX_LAST_OFFSET 15 @@ -472,6 +482,15 @@ struct macb_dma_desc { #define GEM_TX_FRMLEN_OFFSET 0 #define GEM_TX_FRMLEN_SIZE 14 +/* Buffer descriptor constants */ +#define GEM_RX_CSUM_NONE 0 +#define GEM_RX_CSUM_IP_ONLY 1 +#define GEM_RX_CSUM_IP_TCP 2 +#define GEM_RX_CSUM_IP_UDP 3 + +/* limit RX checksum offload to TCP and UDP packets */ +#define GEM_RX_CSUM_CHECKED_MASK 2 + /** * struct macb_tx_skb - data about an skb which is being transmitted * @skb: skb currently being transmitted, only set for the last buffer |