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net/sfc: support per-queue Rx RSS hash offload for EF100

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Riverhead allows to choose Rx prefix (which contains RSS hash value
and valid flag) per queue.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
This commit is contained in:
Andrew Rybchenko 2020-10-13 14:45:49 +01:00 committed by Ferruh Yigit
parent c6845644cc
commit 6ce88e5043
1 changed files with 24 additions and 3 deletions
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27
drivers/net/sfc/sfc_ef100_rx.c
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@ -56,6 +56,7 @@ struct sfc_ef100_rxq {
#define SFC_EF100_RXQ_STARTED 0x1
#define SFC_EF100_RXQ_NOT_RUNNING 0x2
#define SFC_EF100_RXQ_EXCEPTION 0x4
#define SFC_EF100_RXQ_RSS_HASH 0x10
unsigned int ptr_mask;
unsigned int evq_phase_bit_shift;
unsigned int ready_pkts;
@ -349,14 +350,17 @@ static const efx_rx_prefix_layout_t sfc_ef100_rx_prefix_layout = {
EFX_RX_PREFIX_FIELD(_name, ESF_GZ_RX_PREFIX_ ## _name, _big_endian)
SFC_EF100_RX_PREFIX_FIELD(LENGTH, B_FALSE),
SFC_EF100_RX_PREFIX_FIELD(RSS_HASH_VALID, B_FALSE),
SFC_EF100_RX_PREFIX_FIELD(CLASS, B_FALSE),
SFC_EF100_RX_PREFIX_FIELD(RSS_HASH, B_FALSE),
#undef SFC_EF100_RX_PREFIX_FIELD
}
};
static bool
sfc_ef100_rx_prefix_to_offloads(const efx_oword_t *rx_prefix,
sfc_ef100_rx_prefix_to_offloads(const struct sfc_ef100_rxq *rxq,
const efx_oword_t *rx_prefix,
struct rte_mbuf *m)
{
const efx_word_t *class;
@ -375,6 +379,15 @@ sfc_ef100_rx_prefix_to_offloads(const efx_oword_t *rx_prefix,
m->packet_type = sfc_ef100_rx_class_decode(*class, &ol_flags);
if ((rxq->flags & SFC_EF100_RXQ_RSS_HASH) &&
EFX_TEST_OWORD_BIT(rx_prefix[0],
ESF_GZ_RX_PREFIX_RSS_HASH_VALID_LBN)) {
ol_flags |= PKT_RX_RSS_HASH;
/* EFX_OWORD_FIELD converts little-endian to CPU */
m->hash.rss = EFX_OWORD_FIELD(rx_prefix[0],
ESF_GZ_RX_PREFIX_RSS_HASH);
}
m->ol_flags = ol_flags;
return true;
}
@ -461,7 +474,7 @@ sfc_ef100_rx_process_ready_pkts(struct sfc_ef100_rxq *rxq,
seg_len = RTE_MIN(pkt_len, rxq->buf_size - rxq->prefix_size);
rte_pktmbuf_data_len(pkt) = seg_len;
deliver = sfc_ef100_rx_prefix_to_offloads(rx_prefix, pkt);
deliver = sfc_ef100_rx_prefix_to_offloads(rxq, rx_prefix, pkt);
lastseg = pkt;
while ((pkt_len -= seg_len) > 0) {
@ -740,6 +753,13 @@ sfc_ef100_rx_qstart(struct sfc_dp_rxq *dp_rxq, unsigned int evq_read_ptr,
(1U << EFX_RX_PREFIX_FIELD_CLASS))) != 0)
return ENOTSUP;
if ((unsup_rx_prefix_fields &
((1U << EFX_RX_PREFIX_FIELD_RSS_HASH_VALID) |
(1U << EFX_RX_PREFIX_FIELD_RSS_HASH))) == 0)
rxq->flags |= SFC_EF100_RXQ_RSS_HASH;
else
rxq->flags &= ~SFC_EF100_RXQ_RSS_HASH;
rxq->prefix_size = pinfo->erpl_length;
rxq->rearm_data = sfc_ef100_mk_mbuf_rearm_data(rxq->dp.dpq.port_id,
rxq->prefix_size);
@ -812,7 +832,8 @@ struct sfc_dp_rx sfc_ef100_rx = {
.queue_offload_capa = DEV_RX_OFFLOAD_CHECKSUM |
DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM |
DEV_RX_OFFLOAD_OUTER_UDP_CKSUM |
DEV_RX_OFFLOAD_SCATTER,
DEV_RX_OFFLOAD_SCATTER |
DEV_RX_OFFLOAD_RSS_HASH,
.get_dev_info = sfc_ef100_rx_get_dev_info,
.qsize_up_rings = sfc_ef100_rx_qsize_up_rings,
.qcreate = sfc_ef100_rx_qcreate,