diff options
| author | Horatiu Vultur <horatiu.vultur@microchip.com> | 2021-06-26 22:18:04 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-29 00:46:10 +0200 |
| commit | f7458934b0791c39a001e4d902fc3bf697b439b5 (patch) | |
| tree | 4e3b03510b8b2984b5edbda94c6fd202cb8c6355 /net/bridge/br_mrp.c | |
| parent | Merge tag 'for-net-next-2021-06-28' of git://git.kernel.org/pub/scm/linux/ker... (diff) | |
| download | linux-f7458934b0791c39a001e4d902fc3bf697b439b5.tar.xz linux-f7458934b0791c39a001e4d902fc3bf697b439b5.zip | |
net: bridge: mrp: Update the Test frames for MRA
According to the standard IEC 62439-2, in case the node behaves as MRA
and needs to send Test frames on ring ports, then these Test frames need
to have an Option TLV and a Sub-Option TLV which has the type AUTO_MGR.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_mrp.c')
| -rw-r--r-- | net/bridge/br_mrp.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/net/bridge/br_mrp.c b/net/bridge/br_mrp.c index f7012b7d7ce4..fd2de35ffb3c 100644 --- a/net/bridge/br_mrp.c +++ b/net/bridge/br_mrp.c @@ -204,6 +204,33 @@ static struct sk_buff *br_mrp_alloc_test_skb(struct br_mrp *mrp, hdr->timestamp = cpu_to_be32(jiffies_to_msecs(jiffies)); br_mrp_skb_common(skb, mrp); + + /* In case the node behaves as MRA then the Test frame needs to have + * an Option TLV which includes eventually a sub-option TLV that has + * the type AUTO_MGR + */ + if (mrp->ring_role == BR_MRP_RING_ROLE_MRA) { + struct br_mrp_sub_option1_hdr *sub_opt = NULL; + struct br_mrp_tlv_hdr *sub_tlv = NULL; + struct br_mrp_oui_hdr *oui = NULL; + u8 length; + + length = sizeof(*sub_opt) + sizeof(*sub_tlv) + sizeof(oui) + + MRP_OPT_PADDING; + br_mrp_skb_tlv(skb, BR_MRP_TLV_HEADER_OPTION, length); + + oui = skb_put(skb, sizeof(*oui)); + memset(oui, 0x0, sizeof(*oui)); + sub_opt = skb_put(skb, sizeof(*sub_opt)); + memset(sub_opt, 0x0, sizeof(*sub_opt)); + + sub_tlv = skb_put(skb, sizeof(*sub_tlv)); + sub_tlv->type = BR_MRP_SUB_TLV_HEADER_TEST_AUTO_MGR; + + /* 32 bit alligment shall be ensured therefore add 2 bytes */ + skb_put(skb, MRP_OPT_PADDING); + } + br_mrp_skb_tlv(skb, BR_MRP_TLV_HEADER_END, 0x0); return skb; |