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[net,2/3] net/smc: fix valid DMBE buffer sizes

Message ID 20201014174329.35791-3-kgraul@linux.ibm.com (mailing list archive)
State Not Applicable
Delegated to: Netdev Maintainers
Headers show
Series net/smc: fixes 2020-10-14 | expand

Commit Message

Karsten Graul Oct. 14, 2020, 5:43 p.m. UTC
The SMCD_DMBE_SIZES should include all valid DMBE buffer sizes, so the
correct value is 6 which means 1MB. With 7 the registration of an ISM
buffer would always fail because of the invalid size requested.
Fix that and set the value to 6.

Fixes: c6ba7c9ba43d ("net/smc: add base infrastructure for SMC-D and ISM")
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
---
 net/smc/smc_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index f1dbb5025c0b..5de637472a11 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -1596,7 +1596,7 @@  static int smcr_buf_map_usable_links(struct smc_link_group *lgr,
 	return rc;
 }
 
-#define SMCD_DMBE_SIZES		7 /* 0 -> 16KB, 1 -> 32KB, .. 6 -> 1MB */
+#define SMCD_DMBE_SIZES		6 /* 0 -> 16KB, 1 -> 32KB, .. 6 -> 1MB */
 
 static struct smc_buf_desc *smcd_new_buf_create(struct smc_link_group *lgr,
 						bool is_dmb, int bufsize)