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net: sparx5: use a few FDMA helpers in the rx path

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The library provides helpers for a number of DCB and DB operations. Use
these in the rx path.

Signed-off-by: Daniel Machon <daniel.machon@microchip.com>
Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com>
Reviewed-by: Jens Emil Schulz Østergaard <jensemil.schulzostergaard@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Machon 2024-09-02 16:54:12 +02:00 committed by David S. Miller
parent 6647f2fd8d
commit 4ff58c3947
1 changed files with 7 additions and 10 deletions
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17
drivers/net/ethernet/microchip/sparx5/sparx5_fdma.c
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@ -162,19 +162,17 @@ static void sparx5_fdma_tx_reload(struct sparx5 *sparx5, struct sparx5_tx *tx)
static bool sparx5_fdma_rx_get_frame(struct sparx5 *sparx5, struct sparx5_rx *rx)
{
struct fdma *fdma = &rx->fdma;
unsigned int packet_size;
struct sparx5_port *port;
struct fdma_db *db_hw;
struct frame_info fi;
struct sk_buff *skb;
/* Check if the DCB is done */
db_hw = &fdma->dcbs[fdma->dcb_index].db[fdma->db_index];
if (unlikely(!(db_hw->status & FDMA_DCB_STATUS_DONE)))
db_hw = fdma_db_next_get(fdma);
if (unlikely(!fdma_db_is_done(db_hw)))
return false;
skb = rx->skb[fdma->dcb_index][fdma->db_index];
packet_size = FDMA_DCB_STATUS_BLOCKL(db_hw->status);
skb_put(skb, packet_size);
skb_put(skb, fdma_db_len_get(db_hw));
/* Now do the normal processing of the skb */
sparx5_ifh_parse((u32 *)skb->data, &fi);
/* Map to port netdev */
@ -211,17 +209,16 @@ static int sparx5_fdma_napi_callback(struct napi_struct *napi, int weight)
int counter = 0;
while (counter < weight && sparx5_fdma_rx_get_frame(sparx5, rx)) {
fdma->db_index++;
fdma_db_advance(fdma);
counter++;
/* Check if the DCB can be reused */
if (fdma->db_index != fdma->n_dbs)
if (fdma_dcb_is_reusable(fdma))
continue;
fdma_dcb_add(fdma, fdma->dcb_index,
FDMA_DCB_INFO_DATAL(fdma->db_size),
FDMA_DCB_STATUS_INTR);
fdma->db_index = 0;
fdma->dcb_index++;
fdma->dcb_index &= fdma->n_dcbs - 1;
fdma_db_reset(fdma);
fdma_dcb_advance(fdma);
}
if (counter < weight) {
napi_complete_done(&rx->napi, counter);