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zebra: Extend rt_netlink.c to parse SRv6 flavors

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Extend the `parse_encap_seg6local` function to parse SRv6 flavors
information contained in the Netlink message.

Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
This commit is contained in:
Carmine Scarpitta 2023-03-20 21:35:04 +01:00
parent f26becb27a
commit f4d2d9ba0a
1 changed files with 35 additions and 0 deletions
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35
zebra/rt_netlink.c
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@ -407,6 +407,36 @@ static int parse_encap_mpls(struct rtattr *tb, mpls_label_t *labels)
return num_labels;
}
/**
* @parse_encap_seg6local_flavors() - Parses encapsulated SRv6 flavors
* attributes
* @tb: Pointer to rtattr to look for nested items in.
* @flv: Pointer to store SRv6 flavors info in.
*
* Return: 0 on success, non-zero on error
*/
static int parse_encap_seg6local_flavors(struct rtattr *tb,
struct seg6local_flavors_info *flv)
{
struct rtattr *tb_encap[SEG6_LOCAL_FLV_MAX + 1] = {};
netlink_parse_rtattr_nested(tb_encap, SEG6_LOCAL_FLV_MAX, tb);
if (tb_encap[SEG6_LOCAL_FLV_OPERATION])
flv->flv_ops = *(uint32_t *)RTA_DATA(
tb_encap[SEG6_LOCAL_FLV_OPERATION]);
if (tb_encap[SEG6_LOCAL_FLV_LCBLOCK_BITS])
flv->lcblock_len = *(uint8_t *)RTA_DATA(
tb_encap[SEG6_LOCAL_FLV_LCBLOCK_BITS]);
if (tb_encap[SEG6_LOCAL_FLV_LCNODE_FN_BITS])
flv->lcnode_func_len = *(uint8_t *)RTA_DATA(
tb_encap[SEG6_LOCAL_FLV_LCNODE_FN_BITS]);
return 0;
}
static enum seg6local_action_t
parse_encap_seg6local(struct rtattr *tb,
struct seg6local_context *ctx)
@ -434,6 +464,11 @@ parse_encap_seg6local(struct rtattr *tb,
ctx->table =
*(uint32_t *)RTA_DATA(tb_encap[SEG6_LOCAL_VRFTABLE]);
if (tb_encap[SEG6_LOCAL_FLAVORS]) {
parse_encap_seg6local_flavors(tb_encap[SEG6_LOCAL_FLAVORS],
&ctx->flv);
}
return act;
}