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D57253.id178638.diff
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diff --git a/sys/dev/qlxge/qls_hw.c b/sys/dev/qlxge/qls_hw.c
--- a/sys/dev/qlxge/qls_hw.c
+++ b/sys/dev/qlxge/qls_hw.c
@@ -988,6 +988,7 @@
int ret = 0;
int i;
uint32_t value;
+ uint32_t rss_qs;
rss_icb = ha->rss_dma.dma_b;
@@ -1000,8 +1001,13 @@
rss_icb->mask = 0x3FF;
+ /*
+ * RSS: modulo over num_rx_rings. Ring count isn't always a power of
+ * two, so an AND mask would starve queues.
+ */
+ rss_qs = ha->num_rx_rings;
for (i = 0; i < Q81_RSS_ICB_NUM_INDTBL_ENTRIES; i++) {
- rss_icb->cq_id[i] = (i & (ha->num_rx_rings - 1));
+ rss_icb->cq_id[i] = (i % rss_qs);
}
memcpy(rss_icb->ipv6_rss_hash_key, q81_hash_key, 40);
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D57253.id178638.diff (657 B)
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D57253: qlxge(4): Distribute RSS over num_rx_rings with a modulo
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