diff options
Diffstat (limited to 'drivers/net/ethernet/cortina/gemini.c')
| -rw-r--r-- | drivers/net/ethernet/cortina/gemini.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/drivers/net/ethernet/cortina/gemini.c b/drivers/net/ethernet/cortina/gemini.c index f69d974a23a1..5af98fba7480 100644 --- a/drivers/net/ethernet/cortina/gemini.c +++ b/drivers/net/ethernet/cortina/gemini.c @@ -79,8 +79,8 @@ MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); #define GMAC0_IRQ4_8 (GMAC0_MIB_INT_BIT | GMAC0_RX_OVERRUN_INT_BIT) #define GMAC_OFFLOAD_FEATURES (NETIF_F_SG | NETIF_F_IP_CSUM | \ - NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | \ - NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6) + NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | \ + NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6) /** * struct gmac_queue_page - page buffer per-page info @@ -1148,24 +1148,26 @@ static int gmac_map_tx_bufs(struct net_device *netdev, struct sk_buff *skb, struct gmac_txdesc *txd; skb_frag_t *skb_frag; dma_addr_t mapping; - unsigned short mtu; void *buffer; + u16 mss; int ret; - mtu = ETH_HLEN; - mtu += netdev->mtu; - if (skb->protocol == htons(ETH_P_8021Q)) - mtu += VLAN_HLEN; - word1 = skb->len; word3 = SOF_BIT; - if (word1 > mtu) { + mss = skb_shinfo(skb)->gso_size; + if (mss) { + /* This means we are dealing with TCP and skb->len is the + * sum total of all the segments. The TSO will deal with + * chopping this up for us. + */ + /* The accelerator needs the full frame size here */ + mss += skb_tcp_all_headers(skb); + netdev_dbg(netdev, "segment offloading mss = %04x len=%04x\n", + mss, skb->len); word1 |= TSS_MTU_ENABLE_BIT; - word3 |= mtu; - } - - if (skb->len >= ETH_FRAME_LEN) { + word3 |= mss; + } else if (skb->len >= ETH_FRAME_LEN) { /* Hardware offloaded checksumming isn't working on frames * bigger than 1514 bytes. A hypothesis about this is that the * checksum buffer is only 1518 bytes, so when the frames get @@ -1180,7 +1182,9 @@ static int gmac_map_tx_bufs(struct net_device *netdev, struct sk_buff *skb, return ret; } word1 |= TSS_BYPASS_BIT; - } else if (skb->ip_summed == CHECKSUM_PARTIAL) { + } + + if (skb->ip_summed == CHECKSUM_PARTIAL) { int tcp = 0; /* We do not switch off the checksumming on non TCP/UDP |