rtl8211F_led_control

hc

2024-05-11 297b60346df8beafee954a0fd7c2d64f33f3b9bc

 kernel/drivers/net/ethernet/chelsio/cxgb4/smt.c
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@@ -47,8 +47,7 @@
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 	smt_size = SMT_SIZE;
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-	s = kvzalloc(sizeof(*s) + smt_size * sizeof(struct smt_entry),
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-		     GFP_KERNEL);
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+	s = kvzalloc(struct_size(s, smtab, smt_size), GFP_KERNEL);
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 	if (!s)
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 		return NULL;
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 	s->smt_size = smt_size;
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@@ -56,9 +55,9 @@
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 	for (i = 0; i < s->smt_size; ++i) {
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 		s->smtab[i].idx = i;
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 		s->smtab[i].state = SMT_STATE_UNUSED;
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-		memset(&s->smtab[i].src_mac, 0, ETH_ALEN);
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+		eth_zero_addr(s->smtab[i].src_mac);
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 		spin_lock_init(&s->smtab[i].lock);
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-		atomic_set(&s->smtab[i].refcnt, 0);
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+		s->smtab[i].refcnt = 0;
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 	}
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 	return s;
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 }
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@@ -69,7 +68,7 @@
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 	struct smt_entry *e, *end;
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 	for (e = &s->smtab[0], end = &s->smtab[s->smt_size]; e != end; ++e) {
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-		if (atomic_read(&e->refcnt) == 0) {
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+		if (e->refcnt == 0) {
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 			if (!first_free)
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 				first_free = e;
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 		} else {
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@@ -98,12 +97,13 @@
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 static void t4_smte_free(struct smt_entry *e)
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 {
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-	if (atomic_read(&e->refcnt) == 0) {  /* hasn't been recycled */
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+	if (e->refcnt == 0) {  /* hasn't been recycled */
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 		e->state = SMT_STATE_UNUSED;
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 	}
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 }
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 /**
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+ * cxgb4_smt_release - Release SMT entry
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  * @e: smt entry to release
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  *
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  * Releases ref count and frees up an smt entry from SMT table
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@@ -111,7 +111,7 @@
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 void cxgb4_smt_release(struct smt_entry *e)
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 {
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 	spin_lock_bh(&e->lock);
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-	if (atomic_dec_and_test(&e->refcnt))
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+	if ((--e->refcnt) == 0)
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 		t4_smte_free(e);
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 	spin_unlock_bh(&e->lock);
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 }
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@@ -216,14 +216,14 @@
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 	e = find_or_alloc_smte(s, smac);
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 	if (e) {
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 		spin_lock(&e->lock);
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-		if (!atomic_read(&e->refcnt)) {
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-			atomic_set(&e->refcnt, 1);
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+		if (!e->refcnt) {
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+			e->refcnt = 1;
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 			e->state = SMT_STATE_SWITCHING;
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 			e->pfvf = pfvf;
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 			memcpy(e->src_mac, smac, ETH_ALEN);
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 			write_smt_entry(adap, e);
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 		} else {
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-			atomic_inc(&e->refcnt);
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+			++e->refcnt;
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 		}
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 		spin_unlock(&e->lock);
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 	}
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@@ -232,6 +232,7 @@
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 }
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 /**
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+ * cxgb4_smt_alloc_switching - Allocates an SMT entry for switch filters.
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  * @dev: net_device pointer
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  * @smac: MAC address to add to SMT
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  * Returns pointer to the SMT entry created