[ovs-dev] [PATCH 4/4] netdev-dpdk: Remove unused MAX_NB_MBUF.

Ilya Maximets i.maximets at samsung.com
Mon Oct 30 12:52:41 UTC 2017


CC: Robert Wojciechowicz <robertx.wojciechowicz at intel.com>
Fixes: d555d9bded5f ("netdev-dpdk: Create separate memory pool for each port.")
Signed-off-by: Ilya Maximets <i.maximets at samsung.com>
---
 lib/netdev-dpdk.c | 18 ++++--------------
 1 file changed, 4 insertions(+), 14 deletions(-)

diff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c
index cdb3244..0b40966 100644
--- a/lib/netdev-dpdk.c
+++ b/lib/netdev-dpdk.c
@@ -89,23 +89,13 @@ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
 #define NETDEV_DPDK_MBUF_ALIGN      1024
 #define NETDEV_DPDK_MAX_PKT_LEN     9728
 
-/* Max and min number of packets in the mempool.  OVS tries to allocate a
- * mempool with MAX_NB_MBUF: if this fails (because the system doesn't have
- * enough hugepages) we keep halving the number until the allocation succeeds
- * or we reach MIN_NB_MBUF */
-
-#define MAX_NB_MBUF          (4096 * 64)
+/* Min number of packets in the mempool.  OVS tries to allocate a mempool with
+ * roughly estimated number of mbufs: if this fails (because the system doesn't
+ * have enough hugepages) we keep halving the number until the allocation
+ * succeeds or we reach MIN_NB_MBUF */
 #define MIN_NB_MBUF          (4096 * 4)
 #define MP_CACHE_SZ          RTE_MEMPOOL_CACHE_MAX_SIZE
 
-/* MAX_NB_MBUF can be divided by 2 many times, until MIN_NB_MBUF */
-BUILD_ASSERT_DECL(MAX_NB_MBUF % ROUND_DOWN_POW2(MAX_NB_MBUF/MIN_NB_MBUF) == 0);
-
-/* The smallest possible NB_MBUF that we're going to try should be a multiple
- * of MP_CACHE_SZ. This is advised by DPDK documentation. */
-BUILD_ASSERT_DECL((MAX_NB_MBUF / ROUND_DOWN_POW2(MAX_NB_MBUF/MIN_NB_MBUF))
-                  % MP_CACHE_SZ == 0);
-
 /*
  * DPDK XSTATS Counter names definition
  */
-- 
2.7.4



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