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2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/arch/sparc/net/bpf_jit_comp_32.c
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@@ -180,19 +180,19 @@
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 #define emit_loadptr(BASE, STRUCT, FIELD, DEST)				\
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 do {	unsigned int _off = offsetof(STRUCT, FIELD);			\
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-	BUILD_BUG_ON(FIELD_SIZEOF(STRUCT, FIELD) != sizeof(void *));	\
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+	BUILD_BUG_ON(sizeof_field(STRUCT, FIELD) != sizeof(void *));	\
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 	*prog++ = LDPTRI | RS1(BASE) | S13(_off) | RD(DEST);		\
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 } while (0)
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 #define emit_load32(BASE, STRUCT, FIELD, DEST)				\
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 do {	unsigned int _off = offsetof(STRUCT, FIELD);			\
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-	BUILD_BUG_ON(FIELD_SIZEOF(STRUCT, FIELD) != sizeof(u32));	\
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+	BUILD_BUG_ON(sizeof_field(STRUCT, FIELD) != sizeof(u32));	\
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 	*prog++ = LD32I | RS1(BASE) | S13(_off) | RD(DEST);		\
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 } while (0)
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 #define emit_load16(BASE, STRUCT, FIELD, DEST)				\
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 do {	unsigned int _off = offsetof(STRUCT, FIELD);			\
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-	BUILD_BUG_ON(FIELD_SIZEOF(STRUCT, FIELD) != sizeof(u16));	\
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+	BUILD_BUG_ON(sizeof_field(STRUCT, FIELD) != sizeof(u16));	\
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 	*prog++ = LD16I | RS1(BASE) | S13(_off) | RD(DEST);		\
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 } while (0)
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@@ -202,7 +202,7 @@
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 } while (0)
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 #define emit_load8(BASE, STRUCT, FIELD, DEST)				\
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-do {	BUILD_BUG_ON(FIELD_SIZEOF(STRUCT, FIELD) != sizeof(u8));	\
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+do {	BUILD_BUG_ON(sizeof_field(STRUCT, FIELD) != sizeof(u8));	\
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 	__emit_load8(BASE, STRUCT, FIELD, DEST);			\
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 } while (0)
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@@ -491,7 +491,7 @@
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 				} else {
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 					emit_loadimm(K, r_A);
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 				}
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-				/* Fallthrough */
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+				fallthrough;
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 			case BPF_RET | BPF_A:
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 				if (seen_or_pass0) {
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 					if (i != flen - 1) {
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@@ -552,15 +552,14 @@
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 				emit_skb_load32(hash, r_A);
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 				break;
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 			case BPF_ANC | SKF_AD_VLAN_TAG:
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-			case BPF_ANC | SKF_AD_VLAN_TAG_PRESENT:
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 				emit_skb_load16(vlan_tci, r_A);
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-				if (code != (BPF_ANC | SKF_AD_VLAN_TAG)) {
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-					emit_alu_K(SRL, 12);
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+				break;
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+			case BPF_ANC | SKF_AD_VLAN_TAG_PRESENT:
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+				__emit_skb_load8(__pkt_vlan_present_offset, r_A);
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+				if (PKT_VLAN_PRESENT_BIT)
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+					emit_alu_K(SRL, PKT_VLAN_PRESENT_BIT);
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+				if (PKT_VLAN_PRESENT_BIT < 7)
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 					emit_andi(r_A, 1, r_A);
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-				} else {
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-					emit_loadimm(~VLAN_TAG_PRESENT, r_TMP);
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-					emit_and(r_A, r_TMP, r_A);
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-				}
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 				break;
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 			case BPF_LD | BPF_W | BPF_LEN:
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 				emit_skb_load32(len, r_A);