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net: prp: add supervision frame generation utility function

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Add support for generation of PRP supervision frames. For PRP,
supervision frame format is similar to HSR version 0, but have
a PRP Redundancy Control Trailer (RCT) added and uses a different
message type, PRP_TLV_LIFE_CHECK_DD. Also update
is_supervision_frame() to include the new message type used for
PRP supervision frame.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Murali Karicheri
2020-07-22 10:40:19 -04:00
committed by David S. Miller
parent 28e458e097
commit c643ff0383
3 changed files with 88 additions and 2 deletions
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4
net/hsr/hsr_forward.c
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@@ -76,7 +76,9 @@ static bool is_supervision_frame(struct hsr_priv *hsr, struct sk_buff *skb)
}
if (hsr_sup_tag->HSR_TLV_type != HSR_TLV_ANNOUNCE &&
hsr_sup_tag->HSR_TLV_type != HSR_TLV_LIFE_CHECK)
hsr_sup_tag->HSR_TLV_type != HSR_TLV_LIFE_CHECK &&
hsr_sup_tag->HSR_TLV_type != PRP_TLV_LIFE_CHECK_DD &&
hsr_sup_tag->HSR_TLV_type != PRP_TLV_LIFE_CHECK_DA)
return false;
if (hsr_sup_tag->HSR_TLV_length != 12 &&
hsr_sup_tag->HSR_TLV_length != sizeof(struct hsr_sup_payload))