Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Several cases of overlapping changes, as well as one instance
(vxlan) of a bug fix in 'net' overlapping with code movement
in 'net-next'.

Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 30 insertions, 4 deletions

diff --git a/net/core/filter.c b/net/core/filter.c
index 5e2a3b5e5196..69f4ffc0a282 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -1811,7 +1811,7 @@ static u64 bpf_skb_set_tunnel_key(u64 r1, u64 r2, u64 size, u64 flags, u64 r5)
 	u8 compat[sizeof(struct bpf_tunnel_key)];
 	struct ip_tunnel_info *info;
 
-	if (unlikely(flags & ~(BPF_F_TUNINFO_IPV6)))
+	if (unlikely(flags & ~(BPF_F_TUNINFO_IPV6 | BPF_F_ZERO_CSUM_TX)))
 		return -EINVAL;
 	if (unlikely(size != sizeof(struct bpf_tunnel_key))) {
 		switch (size) {
@@ -1835,7 +1835,7 @@ static u64 bpf_skb_set_tunnel_key(u64 r1, u64 r2, u64 size, u64 flags, u64 r5)
 	info = &md->u.tun_info;
 	info->mode = IP_TUNNEL_INFO_TX;
 
-	info->key.tun_flags = TUNNEL_KEY;
+	info->key.tun_flags = TUNNEL_KEY | TUNNEL_CSUM;
 	info->key.tun_id = cpu_to_be64(from->tunnel_id);
 	info->key.tos = from->tunnel_tos;
 	info->key.ttl = from->tunnel_ttl;
@@ -1846,6 +1846,8 @@ static u64 bpf_skb_set_tunnel_key(u64 r1, u64 r2, u64 size, u64 flags, u64 r5)
 		       sizeof(from->remote_ipv6));
 	} else {
 		info->key.u.ipv4.dst = cpu_to_be32(from->remote_ipv4);
+		if (flags & BPF_F_ZERO_CSUM_TX)
+			info->key.tun_flags &= ~TUNNEL_CSUM;
 	}
 
 	return 0;
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 6128aac01b11..d2d9e5ebf58e 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2970,6 +2970,7 @@ int ndo_dflt_fdb_dump(struct sk_buff *skb,
 	nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->mc);
 out:
 	netif_addr_unlock_bh(dev);
+	cb->args[1] = err;
 	return idx;
 }
 EXPORT_SYMBOL(ndo_dflt_fdb_dump);
@@ -3003,6 +3004,7 @@ static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
 		ops = br_dev->netdev_ops;
 	}
 
+	cb->args[1] = 0;
 	for_each_netdev(net, dev) {
 		if (brport_idx && (dev->ifindex != brport_idx))
 			continue;
@@ -3030,12 +3032,16 @@ static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
 				idx = cops->ndo_fdb_dump(skb, cb, br_dev, dev,
 							 idx);
 		}
+		if (cb->args[1] == -EMSGSIZE)
+			break;
 
 		if (dev->netdev_ops->ndo_fdb_dump)
 			idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, NULL,
 							    idx);
 		else
 			idx = ndo_dflt_fdb_dump(skb, cb, dev, NULL, idx);
+		if (cb->args[1] == -EMSGSIZE)
+			break;
 
 		cops = NULL;
 	}
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 7af7ec635d90..9d7be61e5e6b 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -3023,6 +3023,24 @@ int skb_append_pagefrags(struct sk_buff *skb, struct page *page,
 EXPORT_SYMBOL_GPL(skb_append_pagefrags);
 
 /**
+ *	skb_push_rcsum - push skb and update receive checksum
+ *	@skb: buffer to update
+ *	@len: length of data pulled
+ *
+ *	This function performs an skb_push on the packet and updates
+ *	the CHECKSUM_COMPLETE checksum.  It should be used on
+ *	receive path processing instead of skb_push unless you know
+ *	that the checksum difference is zero (e.g., a valid IP header)
+ *	or you are setting ip_summed to CHECKSUM_NONE.
+ */
+static unsigned char *skb_push_rcsum(struct sk_buff *skb, unsigned len)
+{
+	skb_push(skb, len);
+	skb_postpush_rcsum(skb, skb->data, len);
+	return skb->data;
+}
+
+/**
  *	skb_pull_rcsum - pull skb and update receive checksum
  *	@skb: buffer to update
  *	@len: length of data pulled
@@ -4167,9 +4185,9 @@ struct sk_buff *skb_checksum_trimmed(struct sk_buff *skb,
 	if (!pskb_may_pull(skb_chk, offset))
 		goto err;
 
-	__skb_pull(skb_chk, offset);
+	skb_pull_rcsum(skb_chk, offset);
 	ret = skb_chkf(skb_chk);
-	__skb_push(skb_chk, offset);
+	skb_push_rcsum(skb_chk, offset);
 
 	if (ret)
 		goto err;