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authormlelstv <mlelstv@NetBSD.org>2022-12-11 08:09:20 +0000
committermlelstv <mlelstv@NetBSD.org>2022-12-11 08:09:20 +0000
commitf52ef5db799faf7d3137b8a3fdbf1d00db30b53f (patch)
treed7d7d6dc0181bddddba34487f74d879aedd59b60 /sys/netinet
parent756d6476271759b62d4f53e1372b79f43c97ac24 (diff)
Need larger fat pointers for 128bit cache lines.
Diffstat (limited to 'sys/netinet')
-rw-r--r--sys/netinet/tcp_vtw.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/sys/netinet/tcp_vtw.h b/sys/netinet/tcp_vtw.h
index 50d12573b8f..9c0e3d2fdc4 100644
--- a/sys/netinet/tcp_vtw.h
+++ b/sys/netinet/tcp_vtw.h
@@ -1,4 +1,4 @@
-/* $NetBSD: tcp_vtw.h,v 1.9 2018/04/19 21:21:44 christos Exp $ */
+/* $NetBSD: tcp_vtw.h,v 1.10 2022/12/11 08:09:20 mlelstv Exp $ */
/*
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
@@ -151,7 +151,11 @@
*/
struct fatp_mi;
+#if CACHE_LINE_SIZE == 128
+typedef uint64_t fatp_word_t;
+#else
typedef uint32_t fatp_word_t;
+#endif
typedef struct fatp_mi fatp_t;
@@ -161,7 +165,7 @@ typedef struct fatp_mi fatp_t;
#define FATP_NTAGS (CACHE_LINE_SIZE / sizeof(fatp_word_t) - 1)
#define FATP_NXT_WIDTH (sizeof(fatp_word_t) * NBBY - FATP_NTAGS)
-#define FATP_MAX (1 << FATP_NXT_WIDTH)
+#define FATP_MAX (1 << (FATP_NXT_WIDTH < 31 ? FATP_NXT_WIDTH : 31))
/* Worked example: ULP32 with 64-byte cacheline (32-bit x86):
* 15 tags per cacheline. At most 2^17 fat pointers per fatp_ctl_t.