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net/sfc: demand Tx fast free offload on EF10 simple datapath

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Enforce this offload as it is immutable on the said datapath.

Fixes: c78d280e88 ("net/sfc: convert to new Tx offload API")
Cc: stable@dpdk.org

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>
This commit is contained in:
Ivan Malov 2022-02-09 02:26:48 +03:00 committed by Ferruh Yigit
parent f67615ea62
commit 24a491bb88
1 changed files with 8 additions and 0 deletions
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8
drivers/net/sfc/sfc_tx.c
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@ -308,6 +308,7 @@ sfc_tx_qinit_info(struct sfc_adapter *sa, sfc_sw_index_t sw_index)
static int
sfc_tx_check_mode(struct sfc_adapter *sa, const struct rte_eth_txmode *txmode)
{
uint64_t dev_tx_offload_cap = sfc_tx_get_dev_offload_caps(sa);
int rc = 0;
switch (txmode->mq_mode) {
@ -319,6 +320,13 @@ sfc_tx_check_mode(struct sfc_adapter *sa, const struct rte_eth_txmode *txmode)
rc = EINVAL;
}
if ((dev_tx_offload_cap & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) != 0 &&
(txmode->offloads & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) == 0) {
sfc_err(sa, "There is no FAST_FREE flag in the attempted Tx mode configuration");
sfc_err(sa, "FAST_FREE is always active as per the current Tx datapath variant");
rc = EINVAL;
}
/*
* These features are claimed to be i40e-specific,
* but it does make sense to double-check their absence