diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/ibm/ehea/ehea_main.c | 76 |
1 files changed, 21 insertions, 55 deletions
diff --git a/drivers/net/ethernet/ibm/ehea/ehea_main.c b/drivers/net/ethernet/ibm/ehea/ehea_main.c index 77aafba8272c..0fc0ae8b830f 100644 --- a/drivers/net/ethernet/ibm/ehea/ehea_main.c +++ b/drivers/net/ethernet/ibm/ehea/ehea_main.c @@ -1676,65 +1676,35 @@ static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr) return ret; } -static void write_swqe2_TSO(struct sk_buff *skb, - struct ehea_swqe *swqe, u32 lkey) -{ - struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; - u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; - int skb_data_size = skb_headlen(skb); - int headersize; - - /* Packet is TCP with TSO enabled */ - swqe->tx_control |= EHEA_SWQE_TSO; - swqe->mss = skb_shinfo(skb)->gso_size; - /* copy only eth/ip/tcp headers to immediate data and - * the rest of skb->data to sg1entry - */ - headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb); - - skb_data_size = skb_headlen(skb); - - if (skb_data_size >= headersize) { - /* copy immediate data */ - skb_copy_from_linear_data(skb, imm_data, headersize); - swqe->immediate_data_length = headersize; - - if (skb_data_size > headersize) { - /* set sg1entry data */ - sg1entry->l_key = lkey; - sg1entry->len = skb_data_size - headersize; - sg1entry->vaddr = - ehea_map_vaddr(skb->data + headersize); - swqe->descriptors++; - } - } else - pr_err("cannot handle fragmented headers\n"); -} - -static void write_swqe2_nonTSO(struct sk_buff *skb, - struct ehea_swqe *swqe, u32 lkey) +static void write_swqe2_immediate(struct sk_buff *skb, struct ehea_swqe *swqe, + u32 lkey) { int skb_data_size = skb_headlen(skb); u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0]; struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry; + unsigned int immediate_len = SWQE2_MAX_IMM; + + swqe->descriptors = 0; - /* Packet is any nonTSO type - * - * Copy as much as possible skb->data to immediate data and - * the rest to sg1entry - */ - if (skb_data_size >= SWQE2_MAX_IMM) { - /* copy immediate data */ - skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM); + if (skb_is_gso(skb)) { + swqe->tx_control |= EHEA_SWQE_TSO; + swqe->mss = skb_shinfo(skb)->gso_size; + /* + * For TSO packets we only copy the headers into the + * immediate area. + */ + immediate_len = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb); + } - swqe->immediate_data_length = SWQE2_MAX_IMM; + if (skb_is_gso(skb) || skb_data_size >= SWQE2_MAX_IMM) { + skb_copy_from_linear_data(skb, imm_data, immediate_len); + swqe->immediate_data_length = immediate_len; - if (skb_data_size > SWQE2_MAX_IMM) { - /* copy sg1entry data */ + if (skb_data_size > immediate_len) { sg1entry->l_key = lkey; - sg1entry->len = skb_data_size - SWQE2_MAX_IMM; + sg1entry->len = skb_data_size - immediate_len; sg1entry->vaddr = - ehea_map_vaddr(skb->data + SWQE2_MAX_IMM); + ehea_map_vaddr(skb->data + immediate_len); swqe->descriptors++; } } else { @@ -1753,13 +1723,9 @@ static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev, nfrags = skb_shinfo(skb)->nr_frags; sg1entry = &swqe->u.immdata_desc.sg_entry; sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list; - swqe->descriptors = 0; sg1entry_contains_frag_data = 0; - if (skb_is_gso(skb)) - write_swqe2_TSO(skb, swqe, lkey); - else - write_swqe2_nonTSO(skb, swqe, lkey); + write_swqe2_immediate(skb, swqe, lkey); /* write descriptors */ if (nfrags > 0) { |