static int xgene_enet_tx_completion(struct xgene_enet_desc_ring *cp_ring,
struct xgene_enet_raw_desc *raw_desc)
{
struct sk_buff *skb;
struct device *dev;
u16 skb_index;
u8 status;
int ret = 0;
skb_index = GET_VAL(USERINFO, le64_to_cpu(raw_desc->m0));
skb = cp_ring->cp_skb[skb_index];
dev = ndev_to_dev(cp_ring->ndev);
dma_unmap_single(dev, GET_VAL(DATAADDR, le64_to_cpu(raw_desc->m1)),
GET_VAL(BUFDATALEN, le64_to_cpu(raw_desc->m1)),
DMA_TO_DEVICE);
/* Checking for error */
status = GET_VAL(LERR, le64_to_cpu(raw_desc->m0));
if (unlikely(status > 2)) {
xgene_enet_parse_error(cp_ring, netdev_priv(cp_ring->ndev),
status);
ret = -EIO;
}
if (likely(skb)) {
dev_kfree_skb_any(skb);
} else {
netdev_err(cp_ring->ndev, "completion skb is NULL\n");
ret = -EIO;
}
return ret;
}
static int xgene_enet_tx_completion(struct xgene_enet_desc_ring *cp_ring,
struct xgene_enet_raw_desc *raw_desc)
{
struct sk_buff *skb;
struct device *dev;
skb_frag_t *frag;
dma_addr_t *frag_dma_addr;
u16 skb_index;
u8 status;
int i, ret = 0;
skb_index = GET_VAL(USERINFO, le64_to_cpu(raw_desc->m0));
skb = cp_ring->cp_skb[skb_index];
frag_dma_addr = &cp_ring->frag_dma_addr[skb_index * MAX_SKB_FRAGS];
dev = ndev_to_dev(cp_ring->ndev);
dma_unmap_single(dev, GET_VAL(DATAADDR, le64_to_cpu(raw_desc->m1)),
skb_headlen(skb),
DMA_TO_DEVICE);
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
frag = &skb_shinfo(skb)->frags[i];
dma_unmap_page(dev, frag_dma_addr[i], skb_frag_size(frag),
DMA_TO_DEVICE);
}
/* Checking for error */
status = GET_VAL(LERR, le64_to_cpu(raw_desc->m0));
if (unlikely(status > 2)) {
xgene_enet_parse_error(cp_ring, netdev_priv(cp_ring->ndev),
status);
ret = -EIO;
}
if (likely(skb)) {
dev_kfree_skb_any(skb);
} else {
netdev_err(cp_ring->ndev, "completion skb is NULL\n");
ret = -EIO;
}
return ret;
}
