---

yaml
---
r: 224799
b: refs/heads/master
c: 0af55bb
h: refs/heads/master
i:
  224797: c6a32a0
  224795: a2ecbbf
  224791: aa5dfc2
  224783: ac3e211
  224767: 20004d2
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f7fce74e387e0563e5a165704664aa5ee8b2f48b
+refs/heads/master: 0af55bb58f8fa7865004ac48d16affe125ac1b7f

trunk/net/packet/af_packet.c

@@ -224,6 +224,13 @@ struct packet_skb_cb {
 
 #define PACKET_SKB_CB(__skb)	((struct packet_skb_cb *)((__skb)->cb))
 
+static inline struct page *pgv_to_page(void *addr)
+{
+	if (is_vmalloc_addr(addr))
+		return vmalloc_to_page(addr);
+	return virt_to_page(addr);
+}
+
 static void __packet_set_status(struct packet_sock *po, void *frame, int status)
 {
 	union {
@@ -236,11 +243,11 @@ static void __packet_set_status(struct packet_sock *po, void *frame, int status)
 	switch (po->tp_version) {
 	case TPACKET_V1:
 		h.h1->tp_status = status;
-		flush_dcache_page(virt_to_page(&h.h1->tp_status));
+		flush_dcache_page(pgv_to_page(&h.h1->tp_status));
 		break;
 	case TPACKET_V2:
 		h.h2->tp_status = status;
-		flush_dcache_page(virt_to_page(&h.h2->tp_status));
+		flush_dcache_page(pgv_to_page(&h.h2->tp_status));
 		break;
 	default:
 		pr_err("TPACKET version not supported\n");
@@ -263,10 +270,10 @@ static int __packet_get_status(struct packet_sock *po, void *frame)
 	h.raw = frame;
 	switch (po->tp_version) {
 	case TPACKET_V1:
-		flush_dcache_page(virt_to_page(&h.h1->tp_status));
+		flush_dcache_page(pgv_to_page(&h.h1->tp_status));
 		return h.h1->tp_status;
 	case TPACKET_V2:
-		flush_dcache_page(virt_to_page(&h.h2->tp_status));
+		flush_dcache_page(pgv_to_page(&h.h2->tp_status));
 		return h.h2->tp_status;
 	default:
 		pr_err("TPACKET version not supported\n");
@@ -800,15 +807,11 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
 	__packet_set_status(po, h.raw, status);
 	smp_mb();
 	{
-		struct page *p_start, *p_end;
-		u8 *h_end = h.raw + macoff + snaplen - 1;
-
-		p_start = virt_to_page(h.raw);
-		p_end = virt_to_page(h_end);
-		while (p_start <= p_end) {
-			flush_dcache_page(p_start);
-			p_start++;
-		}
+		u8 *start, *end;
+
+		end = (u8 *)PAGE_ALIGN((unsigned long)h.raw + macoff + snaplen);
+		for (start = h.raw; start < end; start += PAGE_SIZE)
+			flush_dcache_page(pgv_to_page(start));
 	}
 
 	sk->sk_data_ready(sk, 0);
@@ -915,7 +918,6 @@ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
 	}
 
 	err = -EFAULT;
-	page = virt_to_page(data);
 	offset = offset_in_page(data);
 	len_max = PAGE_SIZE - offset;
 	len = ((to_write > len_max) ? len_max : to_write);
@@ -934,11 +936,11 @@ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
 			return -EFAULT;
 		}
 
+		page = pgv_to_page(data);
+		data += len;
 		flush_dcache_page(page);
 		get_page(page);
-		skb_fill_page_desc(skb,
-				nr_frags,
-				page++, offset, len);
+		skb_fill_page_desc(skb, nr_frags, page, offset, len);
 		to_write -= len;
 		offset = 0;
 		len_max = PAGE_SIZE;