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| author | Ameya Dharkar <adharkar@vmware.com> | 2019-05-16 17:29:08 -0700 |
|---|---|---|
| committer | Ameya Dharkar <adharkar@vmware.com> | 2019-06-17 12:05:38 -0700 |
| commit | 9da60d0a19b1a838865e37e6554481dc851c1bcb (patch) | |
| tree | 4d5560f35499c1396839040fa4dead6da3c82d26 /zebra/zebra_fpm.c | |
| parent | fbe748e59fdff41a0ae8a07c42041bcfecb39f92 (diff) | |
Zebra: Build nelink message for RMAC updates
- Function "zfpm_netlink_encode_mac()" builds a netlink message for RMAC updates.
- To build a netlink message for RMAC updates, we use "ndmsg" in rtlink.
- FPM Message structure is:
FPM header -> nlmsg header -> ndmsg fields -> ndmsg attributes
- Netlink message will look like:
{'ndm_type': 0, 'family': 7, '__pad': (), 'header': {'flags': 1281,
'length':64, 'type': 28, 'pid': 0, 'sequence_number': 0}, 'state': 2,
'flags': 22, 'attrs': [('NDA_LLADDR', 'b2:66:eb:b9:5b:d3'),
('NDA_DST', '10.100.0.2'), ('NDA_MASTER', 11), ('NDA_VNI', 1000)],
'ifindex': 18}
- Message details:
nlmsghdr.nlmsg_type = RTM_NEWNEIGH(28) or RTM_DELNEIGH(29)
nlmsghdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE for "add" ,
"NLM_F_REQUEST" for delete.
ndmsg.ndm_family = AF_BRIDGE
ndmsg.ndm_ifindex = vxlan_if (ifindex)
ndmsg.ndm_state = NUD_REACHABLE
ndmsg.ndm_flags |= NTF_SELF | NTF_MASTER | NTF_EXT_LEARNED
Attribute "NDA_LLADDR" for MAC address
Attribute "NDA_DST" for remote vtep ip
Attribute "NDA_MASTER" for bridge interface ifindex.
Attribute "NDA_VNI" for VNI id.
Signed-off-by: Ameya Dharkar <adharkar@vmware.com>
Diffstat (limited to 'zebra/zebra_fpm.c')
| -rw-r--r-- | zebra/zebra_fpm.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/zebra/zebra_fpm.c b/zebra/zebra_fpm.c index 83d0dba61f..3e74db8111 100644 --- a/zebra/zebra_fpm.c +++ b/zebra/zebra_fpm.c @@ -1052,6 +1052,11 @@ static inline int zfpm_encode_mac(struct fpm_mac_info_t *mac, char *in_buf, case ZFPM_MSG_FORMAT_NONE: break; case ZFPM_MSG_FORMAT_NETLINK: +#ifdef HAVE_NETLINK + len = zfpm_netlink_encode_mac(mac, in_buf, in_buf_len); + assert(fpm_msg_align(len) == len); + *msg_type = FPM_MSG_TYPE_NETLINK; +#endif /* HAVE_NETLINK */ break; case ZFPM_MSG_FORMAT_PROTOBUF: break; @@ -1100,7 +1105,7 @@ static int zfpm_build_mac_updates(void) data = fpm_msg_data(hdr); data_len = zfpm_encode_mac(mac, (char *)data, buf_end - data, &msg_type); - /* assert(data_len); */ + assert(data_len); hdr->msg_type = msg_type; msg_len = fpm_data_len_to_msg_len(data_len); |