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| author | Murali Karicheri <m-karicheri2@ti.com> | 2020-07-22 10:40:17 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-27 12:20:40 -0700 |
| commit | 121c33b07b3127f501b366bc23d2a590e2f2b8ef (patch) | |
| tree | 8ad0fbaa12f5ae6f7f6052535f552287e7b54385 /net/hsr | |
| parent | 8f4c0e01789c18674acdf17cae3822b3dc3db715 (diff) | |
| download | linux-121c33b07b3127f501b366bc23d2a590e2f2b8ef.tar.gz linux-121c33b07b3127f501b366bc23d2a590e2f2b8ef.tar.bz2 linux-121c33b07b3127f501b366bc23d2a590e2f2b8ef.zip | |
net: hsr: introduce common code for skb initialization
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 <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/hsr')
| -rw-r--r-- | net/hsr/hsr_device.c | 41 |
1 files 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 |