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octeontx2-pf: Reconfigure RSS table after enabling AF_XDP zerocopy on rx queue

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RSS table needs to be reconfigured once a rx queue is enabled or
disabled for AF_XDP zerocopy support. After enabling UMEM on a rx queue,
that queue should not be part of RSS queue selection algorithm.
Similarly the queue should be considered again after UMEM is disabled.

Signed-off-by: Suman Ghosh <sumang@marvell.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Suman Ghosh
2025-02-13 11:01:39 +05:30
committed by Paolo Abeni
parent efabce2901
commit 25b07c1a86
3 changed files with 13 additions and 1 deletions
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4
drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
View File

@@ -331,6 +331,10 @@ int otx2_set_rss_table(struct otx2_nic *pfvf, int ctx_id)
rss_ctx = rss->rss_ctx[ctx_id];
/* Get memory to put this msg */
for (idx = 0; idx < rss->rss_size; idx++) {
/* Ignore the queue if AF_XDP zero copy is enabled */
if (test_bit(rss_ctx->ind_tbl[idx], pfvf->af_xdp_zc_qidx))
continue;
aq = otx2_mbox_alloc_msg_nix_aq_enq(mbox);
if (!aq) {
/* The shared memory buffer can be full.

6
drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
View File

@@ -910,8 +910,12 @@ static int otx2_get_rxfh(struct net_device *dev,
return -ENOENT;
if (indir) {
for (idx = 0; idx < rss->rss_size; idx++)
for (idx = 0; idx < rss->rss_size; idx++) {
/* Ignore if the rx queue is AF_XDP zero copy enabled */
if (test_bit(rss_ctx->ind_tbl[idx], pfvf->af_xdp_zc_qidx))
continue;
indir[idx] = rss_ctx->ind_tbl[idx];
}
}
if (rxfh->key)
memcpy(rxfh->key, rss->key, sizeof(rss->key));

4
drivers/net/ethernet/marvell/octeontx2/nic/otx2_xsk.c
View File

@@ -130,6 +130,8 @@ int otx2_xsk_pool_enable(struct otx2_nic *pf, struct xsk_buff_pool *pool, u16 qi
set_bit(qidx, pf->af_xdp_zc_qidx);
otx2_clean_up_rq(pf, qidx);
/* Reconfigure RSS table as 'qidx' cannot be part of RSS now */
otx2_set_rss_table(pf, DEFAULT_RSS_CONTEXT_GROUP);
/* Kick start the NAPI context so that receiving will start */
return otx2_xsk_wakeup(pf->netdev, qidx, XDP_WAKEUP_RX);
}
@@ -146,6 +148,8 @@ int otx2_xsk_pool_disable(struct otx2_nic *pf, u16 qidx)
otx2_clean_up_rq(pf, qidx);
clear_bit(qidx, pf->af_xdp_zc_qidx);
xsk_pool_dma_unmap(pool, DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_WEAK_ORDERING);
/* Reconfigure RSS table as 'qidx' now need to be part of RSS now */
otx2_set_rss_table(pf, DEFAULT_RSS_CONTEXT_GROUP);
return 0;
}