eth: fbnic: Fix debugfs output for BDQ's with page frags

ddaskala · kuba-moo · commit f3567dd428b2 · 2026-03-27T20:30:23.000-07:00
The rings size_mask represents the number of pages, so we need to determine the number of page frags when dumping the descriptors. Fixes: df04373 ("eth fbnic: Add debugfs hooks for tx/rx rings") Signed-off-by: Dimitri Daskalakis <daskald@meta.com> Link: https://patch.msgid.link/20260324195123.3486219-3-dimitri.daskalakis1@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c b/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c
@@ -197,7 +197,7 @@ static int fbnic_dbg_bdq_desc_seq_show(struct seq_file *s, void *v)
 		return 0;
 	}
 
-	for (i = 0; i <= ring->size_mask; i++) {
+	for (i = 0; i < (ring->size_mask + 1) * FBNIC_BD_FRAG_COUNT; i++) {
 		u64 bd = le64_to_cpu(ring->desc[i]);
 
 		seq_printf(s, "%04x %#04llx %#014llx\n", i,

Original file line number	Diff line number	Diff line change
`@@ -197,7 +197,7 @@ static int fbnic_dbg_bdq_desc_seq_show(struct seq_file s, void v)`
`197`	`197`	`return 0;`
`198`	`198`	`}`
`199`	`199`
`200`		`- for (i = 0; i <= ring->size_mask; i++) {`
	`200`	`+ for (i = 0; i < (ring->size_mask + 1) * FBNIC_BD_FRAG_COUNT; i++) {`
`201`	`201`	`u64 bd = le64_to_cpu(ring->desc[i]);`
`202`	`202`
`203`	`203`	`seq_printf(s, "%04x %#04llx %#014llx\n", i,`