diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/e1000e/netdev.c | 62 |
1 files changed, 39 insertions, 23 deletions
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c index 1b72749979c..abd492b7336 100644 --- a/drivers/net/e1000e/netdev.c +++ b/drivers/net/e1000e/netdev.c @@ -3749,34 +3749,50 @@ static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb) struct e1000_buffer *buffer_info; unsigned int i; u8 css; + u32 cmd_len = E1000_TXD_CMD_DEXT; - if (skb->ip_summed == CHECKSUM_PARTIAL) { - css = skb_transport_offset(skb); - - i = tx_ring->next_to_use; - buffer_info = &tx_ring->buffer_info[i]; - context_desc = E1000_CONTEXT_DESC(*tx_ring, i); - - context_desc->lower_setup.ip_config = 0; - context_desc->upper_setup.tcp_fields.tucss = css; - context_desc->upper_setup.tcp_fields.tucso = - css + skb->csum_offset; - context_desc->upper_setup.tcp_fields.tucse = 0; - context_desc->tcp_seg_setup.data = 0; - context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); + if (skb->ip_summed != CHECKSUM_PARTIAL) + return 0; - buffer_info->time_stamp = jiffies; - buffer_info->next_to_watch = i; + switch (skb->protocol) { + case __constant_htons(ETH_P_IP): + if (ip_hdr(skb)->protocol == IPPROTO_TCP) + cmd_len |= E1000_TXD_CMD_TCP; + break; + case __constant_htons(ETH_P_IPV6): + /* XXX not handling all IPV6 headers */ + if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) + cmd_len |= E1000_TXD_CMD_TCP; + break; + default: + if (unlikely(net_ratelimit())) + e_warn("checksum_partial proto=%x!\n", skb->protocol); + break; + } - i++; - if (i == tx_ring->count) - i = 0; - tx_ring->next_to_use = i; + css = skb_transport_offset(skb); - return 1; - } + i = tx_ring->next_to_use; + buffer_info = &tx_ring->buffer_info[i]; + context_desc = E1000_CONTEXT_DESC(*tx_ring, i); + + context_desc->lower_setup.ip_config = 0; + context_desc->upper_setup.tcp_fields.tucss = css; + context_desc->upper_setup.tcp_fields.tucso = + css + skb->csum_offset; + context_desc->upper_setup.tcp_fields.tucse = 0; + context_desc->tcp_seg_setup.data = 0; + context_desc->cmd_and_length = cpu_to_le32(cmd_len); + + buffer_info->time_stamp = jiffies; + buffer_info->next_to_watch = i; + + i++; + if (i == tx_ring->count) + i = 0; + tx_ring->next_to_use = i; - return 0; + return 1; } #define E1000_MAX_PER_TXD 8192 |