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sfc: de-indirect TSO handling

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Remove the tx_queue->handle_tso function pointer, and just use
 tx_queue->tso_version to decide which function to call, thus removing
 an indirect call from the fast path.
Instead of passing a tso_v2 flag to efx_mcdi_tx_init(), set the desired
 tx_queue->tso_version before calling it.
In efx_mcdi_tx_init(), report back failure to obtain a TSOv2 context by
 setting tx_queue->tso_version to 0, which will cause the TX path to
 use the GSO-based fallback.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Edward Cree
2020-09-11 23:40:03 +01:00
committed by David S. Miller
parent fe0c4060c1
commit 1679c72cf4
9 changed files with 46 additions and 37 deletions
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drivers/net/ethernet/sfc/mcdi_functions.h
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@@ -19,7 +19,7 @@ int efx_mcdi_ev_probe(struct efx_channel *channel);
int efx_mcdi_ev_init(struct efx_channel *channel, bool v1_cut_thru, bool v2);
void efx_mcdi_ev_remove(struct efx_channel *channel);
void efx_mcdi_ev_fini(struct efx_channel *channel);
int efx_mcdi_tx_init(struct efx_tx_queue *tx_queue, bool tso_v2);
int efx_mcdi_tx_init(struct efx_tx_queue *tx_queue);
void efx_mcdi_tx_remove(struct efx_tx_queue *tx_queue);
void efx_mcdi_tx_fini(struct efx_tx_queue *tx_queue);
int efx_mcdi_rx_probe(struct efx_rx_queue *rx_queue);