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net: lan966x: use a few FDMA helpers throughout 

The library provides helpers for a number of DCB and DB operations. Use
these throughout the code and remove the old ones.

Signed-off-by: Daniel Machon <daniel.machon@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Daniel Machon 2024-09-05 10:06:39 +02:00 committed by Paolo Abeni
parent c06fef96c7
commit 9fbc5719f6
1 changed files with 11 additions and 31 deletions
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42
drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c
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@ -126,14 +126,6 @@ static int lan966x_fdma_rx_alloc(struct lan966x_rx *rx)
return 0;
}
static void lan966x_fdma_rx_advance_dcb(struct lan966x_rx *rx)
{
struct fdma *fdma = &rx->fdma;
fdma->dcb_index++;
fdma->dcb_index &= fdma->n_dcbs - 1;
}
static void lan966x_fdma_rx_start(struct lan966x_rx *rx)
{
struct lan966x *lan966x = rx->lan966x;
@ -355,8 +347,8 @@ static void lan966x_fdma_tx_clear_buf(struct lan966x *lan966x, int weight)
if (!dcb_buf->used)
continue;
db = &fdma->dcbs[i].db[0];
if (!(db->status & FDMA_DCB_STATUS_DONE))
db = fdma_db_get(fdma, i, 0);
if (!fdma_db_is_done(db))
continue;
dcb_buf->dev->stats.tx_packets++;
@ -396,19 +388,6 @@ static void lan966x_fdma_tx_clear_buf(struct lan966x *lan966x, int weight)
spin_unlock_irqrestore(&lan966x->tx_lock, flags);
}
static bool lan966x_fdma_rx_more_frames(struct lan966x_rx *rx)
{
struct fdma *fdma = &rx->fdma;
struct fdma_db *db;
/* Check if there is any data */
db = &fdma->dcbs[fdma->dcb_index].db[fdma->db_index];
if (unlikely(!(db->status & FDMA_DCB_STATUS_DONE)))
return false;
return true;
}
static int lan966x_fdma_rx_check_frame(struct lan966x_rx *rx, u64 *src_port)
{
struct lan966x *lan966x = rx->lan966x;
@ -417,7 +396,7 @@ static int lan966x_fdma_rx_check_frame(struct lan966x_rx *rx, u64 *src_port)
struct fdma_db *db;
struct page *page;
db = &fdma->dcbs[fdma->dcb_index].db[fdma->db_index];
db = fdma_db_next_get(fdma);
page = rx->page[fdma->dcb_index][fdma->db_index];
if (unlikely(!page))
return FDMA_ERROR;
@ -450,7 +429,7 @@ static struct sk_buff *lan966x_fdma_rx_get_frame(struct lan966x_rx *rx,
u64 timestamp;
/* Get the received frame and unmap it */
db = &fdma->dcbs[fdma->dcb_index].db[fdma->db_index];
db = fdma_db_next_get(fdma);
page = rx->page[fdma->dcb_index][fdma->db_index];
skb = build_skb(page_address(page), fdma->db_size);
@ -508,7 +487,7 @@ static int lan966x_fdma_napi_poll(struct napi_struct *napi, int weight)
/* Get all received skb */
while (counter < weight) {
if (!lan966x_fdma_rx_more_frames(rx))
if (!fdma_has_frames(fdma))
break;
counter++;
@ -518,22 +497,22 @@ static int lan966x_fdma_napi_poll(struct napi_struct *napi, int weight)
break;
case FDMA_ERROR:
lan966x_fdma_rx_free_page(rx);
lan966x_fdma_rx_advance_dcb(rx);
fdma_dcb_advance(fdma);
goto allocate_new;
case FDMA_REDIRECT:
redirect = true;
fallthrough;
case FDMA_TX:
lan966x_fdma_rx_advance_dcb(rx);
fdma_dcb_advance(fdma);
continue;
case FDMA_DROP:
lan966x_fdma_rx_free_page(rx);
lan966x_fdma_rx_advance_dcb(rx);
fdma_dcb_advance(fdma);
continue;
}
skb = lan966x_fdma_rx_get_frame(rx, src_port);
lan966x_fdma_rx_advance_dcb(rx);
fdma_dcb_advance(fdma);
if (!skb)
goto allocate_new;
@ -597,7 +576,8 @@ static int lan966x_fdma_get_next_dcb(struct lan966x_tx *tx)
for (i = 0; i < fdma->n_dcbs; ++i) {
dcb_buf = &tx->dcbs_buf[i];
if (!dcb_buf->used && &fdma->dcbs[i] != fdma->last_dcb)
if (!dcb_buf->used &&
!fdma_is_last(&tx->fdma, &tx->fdma.dcbs[i]))
return i;
}