cxgbe(4): validate largest_rx_cluster and safest_rx_cluster.
These tunables can only be set to a valid cluster size (2K, 4K, 9K, or 16K) as documented in the man page. Anything else could lead to a panic on interface up. Reported by: mav@ MFC after: 1 week Sponsored by: Chelsio Communications
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=366354
@ -542,6 +542,28 @@ t4_sge_modload(void)
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tscale = 1;
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}
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if (largest_rx_cluster != MCLBYTES &&
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#if MJUMPAGESIZE != MCLBYTES
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largest_rx_cluster != MJUMPAGESIZE &&
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#endif
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largest_rx_cluster != MJUM9BYTES &&
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largest_rx_cluster != MJUM16BYTES) {
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printf("Invalid hw.cxgbe.largest_rx_cluster value (%d),"
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" using %d instead.\n", largest_rx_cluster, MJUM16BYTES);
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largest_rx_cluster = MJUM16BYTES;
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}
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if (safest_rx_cluster != MCLBYTES &&
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#if MJUMPAGESIZE != MCLBYTES
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safest_rx_cluster != MJUMPAGESIZE &&
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#endif
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safest_rx_cluster != MJUM9BYTES &&
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safest_rx_cluster != MJUM16BYTES) {
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printf("Invalid hw.cxgbe.safest_rx_cluster value (%d),"
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" using %d instead.\n", safest_rx_cluster, MJUMPAGESIZE);
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safest_rx_cluster = MJUMPAGESIZE;
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}
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extfree_refs = counter_u64_alloc(M_WAITOK);
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extfree_rels = counter_u64_alloc(M_WAITOK);
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pullups = counter_u64_alloc(M_WAITOK);
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