[PATCH net-next 3/8] netconsole: move push_ipv6() from netpoll

[Breno Leitao]

push_ipv6() builds the IPv6 header for netconsole's UDP packets.
Its only caller, netpoll_send_udp(), now lives in netconsole, so
the helper can move there as a file-static function. Drop its
EXPORT_SYMBOL_GPL and remove the prototype from
include/linux/netpoll.h.

Signed-off-by: Breno Leitao <leitao@xxxxxxxxxx>
---
 drivers/net/netconsole.c | 23 +++++++++++++++++++++++
 include/linux/netpoll.h  |  1 -
 net/core/netpoll.c       | 24 ------------------------
 3 files changed, 23 insertions(+), 25 deletions(-)

diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index 56f310041ebda..f805ae95ce7b1 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -1651,6 +1651,29 @@ static struct notifier_block netconsole_netdev_notifier = {
 	.notifier_call  = netconsole_netdev_event,
 };
 
+static void push_ipv6(struct netpoll *np, struct sk_buff *skb, int len)
+{
+	struct ipv6hdr *ip6h;
+
+	skb_push(skb, sizeof(struct ipv6hdr));
+	skb_reset_network_header(skb);
+	ip6h = ipv6_hdr(skb);
+
+	/* ip6h->version = 6; ip6h->priority = 0; */
+	*(unsigned char *)ip6h = 0x60;
+	ip6h->flow_lbl[0] = 0;
+	ip6h->flow_lbl[1] = 0;
+	ip6h->flow_lbl[2] = 0;
+
+	ip6h->payload_len = htons(sizeof(struct udphdr) + len);
+	ip6h->nexthdr = IPPROTO_UDP;
+	ip6h->hop_limit = 32;
+	ip6h->saddr = np->local_ip.in6;
+	ip6h->daddr = np->remote_ip.in6;
+
+	skb->protocol = htons(ETH_P_IPV6);
+}
+
 static int netpoll_send_udp(struct netpoll *np, const char *msg, int len)
 {
 	int total_len, ip_len, udp_len;
diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h
index 57be72bb82dc9..7f57bd0eac66d 100644
--- a/include/linux/netpoll.h
+++ b/include/linux/netpoll.h
@@ -75,7 +75,6 @@ void do_netpoll_cleanup(struct netpoll *np);
 netdev_tx_t netpoll_send_skb(struct netpoll *np, struct sk_buff *skb);
 struct sk_buff *find_skb(struct netpoll *np, int len, int reserve);
 void netpoll_udp_checksum(struct netpoll *np, struct sk_buff *skb, int len);
-void push_ipv6(struct netpoll *np, struct sk_buff *skb, int len);
 void push_ipv4(struct netpoll *np, struct sk_buff *skb, int len);
 void push_udp(struct netpoll *np, struct sk_buff *skb, int len);
 void push_eth(struct netpoll *np, struct sk_buff *skb);
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 39209308efad0..6a10ca5eaa093 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -413,30 +413,6 @@ netdev_tx_t netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
 }
 EXPORT_SYMBOL(netpoll_send_skb);
 
-void push_ipv6(struct netpoll *np, struct sk_buff *skb, int len)
-{
-	struct ipv6hdr *ip6h;
-
-	skb_push(skb, sizeof(struct ipv6hdr));
-	skb_reset_network_header(skb);
-	ip6h = ipv6_hdr(skb);
-
-	/* ip6h->version = 6; ip6h->priority = 0; */
-	*(unsigned char *)ip6h = 0x60;
-	ip6h->flow_lbl[0] = 0;
-	ip6h->flow_lbl[1] = 0;
-	ip6h->flow_lbl[2] = 0;
-
-	ip6h->payload_len = htons(sizeof(struct udphdr) + len);
-	ip6h->nexthdr = IPPROTO_UDP;
-	ip6h->hop_limit = 32;
-	ip6h->saddr = np->local_ip.in6;
-	ip6h->daddr = np->remote_ip.in6;
-
-	skb->protocol = htons(ETH_P_IPV6);
-}
-EXPORT_SYMBOL_GPL(push_ipv6);
-
 void push_ipv4(struct netpoll *np, struct sk_buff *skb, int len)
 {
 	static atomic_t ip_ident;

-- 
2.53.0-Meta