As a preparatory patch to introduce PRP protocol support in the
driver, refactor the skb init code to a separate function.
Signed-off-by: Murali Karicheri <[email protected]>
---
net/hsr/hsr_device.c | 41 ++++++++++++++++++++++++++++-------------
1 file changed, 28 insertions(+), 13 deletions(-)
diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c
index 40ac45123a62..bfe2d1449dbd 100644
--- a/net/hsr/hsr_device.c
+++ b/net/hsr/hsr_device.c
@@ -230,15 +230,11 @@ static const struct header_ops hsr_header_ops = {
.parse = eth_header_parse,
};
-static void send_hsr_supervision_frame(struct hsr_port *master,
- u8 type, u8 hsr_ver)
+static struct sk_buff *hsr_init_skb(struct hsr_port *master, u8 hsr_ver)
{
+ struct hsr_priv *hsr = master->hsr;
struct sk_buff *skb;
int hlen, tlen;
- struct hsr_tag *hsr_tag;
- struct hsr_sup_tag *hsr_stag;
- struct hsr_sup_payload *hsr_sp;
- unsigned long irqflags;
hlen = LL_RESERVED_SPACE(master->dev);
tlen = master->dev->needed_tailroom;
@@ -247,22 +243,44 @@ static void send_hsr_supervision_frame(struct hsr_port *master,
sizeof(struct hsr_sup_payload) + hlen + tlen);
if (!skb)
- return;
+ return skb;
skb_reserve(skb, hlen);
-
skb->dev = master->dev;
skb->protocol = htons(hsr_ver ? ETH_P_HSR : ETH_P_PRP);
skb->priority = TC_PRIO_CONTROL;
if (dev_hard_header(skb, skb->dev, (hsr_ver ? ETH_P_HSR : ETH_P_PRP),
- master->hsr->sup_multicast_addr,
+ hsr->sup_multicast_addr,
skb->dev->dev_addr, skb->len) <= 0)
goto out;
+
skb_reset_mac_header(skb);
skb_reset_network_header(skb);
skb_reset_transport_header(skb);
+ return skb;
+out:
+ kfree_skb(skb);
+
+ return NULL;
+}
+
+static void send_hsr_supervision_frame(struct hsr_port *master,
+ u8 type, u8 hsr_ver)
+{
+ struct hsr_sup_payload *hsr_sp;
+ struct hsr_sup_tag *hsr_stag;
+ struct hsr_tag *hsr_tag;
+ unsigned long irqflags;
+ struct sk_buff *skb;
+
+ skb = hsr_init_skb(master, hsr_ver);
+ if (!skb) {
+ WARN_ONCE(1, "HSR: Could not send supervision frame\n");
+ return;
+ }
+
if (hsr_ver > 0) {
hsr_tag = skb_put(skb, sizeof(struct hsr_tag));
hsr_tag->encap_proto = htons(ETH_P_PRP);
@@ -299,11 +317,8 @@ static void send_hsr_supervision_frame(struct hsr_port *master,
return;
hsr_forward_skb(skb, master);
- return;
-out:
- WARN_ONCE(1, "HSR: Could not send supervision frame\n");
- kfree_skb(skb);
+ return;
}
/* Announce (supervision frame) timer function
--
2.17.1