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sfc: make TSO version a per-queue parameter

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The Solarflare 8000 series NIC will use a new TSO scheme. The current
driver refuses to load if the current TSO scheme is not found. Remove
that check and instead make the TSO version a per-queue parameter.

Signed-off-by: Bert Kenward <bkenward@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Bert Kenward 2015-11-30 09:05:35 +00:00 committed by David S. Miller
parent 02fff96a79
commit 93171b14a5
3 changed files with 14 additions and 9 deletions
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13
drivers/net/ethernet/sfc/ef10.c
View File

@ -180,13 +180,6 @@ static int efx_ef10_init_datapath_caps(struct efx_nic *efx)
nic_data->tx_dpcpu_fw_id =
MCDI_WORD(outbuf, GET_CAPABILITIES_OUT_TX_DPCPU_FW_ID);
if (!(nic_data->datapath_caps &
(1 << MC_CMD_GET_CAPABILITIES_OUT_TX_TSO_LBN))) {
netif_err(efx, drv, efx->net_dev,
"current firmware does not support TSO\n");
return -ENODEV;
}
if (!(nic_data->datapath_caps &
(1 << MC_CMD_GET_CAPABILITIES_OUT_RX_PREFIX_LEN_14_LBN))) {
netif_err(efx, probe, efx->net_dev,
@ -1797,6 +1790,12 @@ static void efx_ef10_tx_init(struct efx_tx_queue *tx_queue)
ESF_DZ_TX_OPTION_UDP_TCP_CSUM, csum_offload,
ESF_DZ_TX_OPTION_IP_CSUM, csum_offload);
tx_queue->write_count = 1;
if (nic_data->datapath_caps &
(1 << MC_CMD_GET_CAPABILITIES_OUT_TX_TSO_LBN)) {
tx_queue->tso_version = 1;
}
wmb();
efx_ef10_push_tx_desc(tx_queue, txd);

2
drivers/net/ethernet/sfc/net_driver.h
View File

@ -182,6 +182,7 @@ struct efx_tx_buffer {
*
* @efx: The associated Efx NIC
* @queue: DMA queue number
* @tso_version: Version of TSO in use for this queue.
* @channel: The associated channel
* @core_txq: The networking core TX queue structure
* @buffer: The software buffer ring
@ -228,6 +229,7 @@ struct efx_tx_queue {
/* Members which don't change on the fast path */
struct efx_nic *efx ____cacheline_aligned_in_smp;
unsigned queue;
unsigned int tso_version;
struct efx_channel *channel;
struct netdev_queue *core_txq;
struct efx_tx_buffer *buffer;

8
drivers/net/ethernet/sfc/tx.c
View File

@ -1010,13 +1010,17 @@ static void efx_enqueue_unwind(struct efx_tx_queue *tx_queue,
/* Parse the SKB header and initialise state. */
static int tso_start(struct tso_state *st, struct efx_nic *efx,
struct efx_tx_queue *tx_queue,
const struct sk_buff *skb)
{
bool use_opt_desc = efx_nic_rev(efx) >= EFX_REV_HUNT_A0;
struct device *dma_dev = &efx->pci_dev->dev;
unsigned int header_len, in_len;
bool use_opt_desc = false;
dma_addr_t dma_addr;
if (tx_queue->tso_version == 1)
use_opt_desc = true;
st->ip_off = skb_network_header(skb) - skb->data;
st->tcp_off = skb_transport_header(skb) - skb->data;
header_len = st->tcp_off + (tcp_hdr(skb)->doff << 2u);
@ -1271,7 +1275,7 @@ static int efx_enqueue_skb_tso(struct efx_tx_queue *tx_queue,
/* Find the packet protocol and sanity-check it */
state.protocol = efx_tso_check_protocol(skb);
rc = tso_start(&state, efx, skb);
rc = tso_start(&state, efx, tx_queue, skb);
if (rc)
goto mem_err;