diff options
| author | Chirag Shah <chirag@nvidia.com> | 2022-01-25 10:25:38 -0800 |
|---|---|---|
| committer | Donald Sharp <sharpd@nvidia.com> | 2022-06-24 07:33:34 -0400 |
| commit | acc8e68720ecc320b6d008ebb21c921f404762b0 (patch) | |
| tree | 7d66433769cf90ca0365eee21dbce1348d9c5b6a /zebra/if_netlink.c | |
| parent | c315b87c4f71c79508eb61e2f6cbd27b8df2ec87 (diff) | |
zebra: netlink rtm tunnel msg parsing
'bridge vni add vni <id> dev <vxlan device>'
generates new RTM_NEWTUNNEL and RTM_DELTUNNEL
to add or remove vni to l3vxlan device.
Register new RTNLGRP_TUNNEL group to receive
new netlink notification.
Callback for the new RTM_xxxTUNNEL.
kernel patches:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/
linux.git/commit/?h=v5.18-rc7&id=7b8135f4df98b155b23754b6065c157861e268f1
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/
linux.git/commit/?h=v5.18-rc7&id=f9c4bb0b245cee35ef66f75bf409c9573d934cf9
Ticket:#3073812
Testing Done:
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Signed-off-by: Chirag Shah <chirag@nvidia.com>
Diffstat (limited to 'zebra/if_netlink.c')
| -rw-r--r-- | zebra/if_netlink.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/zebra/if_netlink.c b/zebra/if_netlink.c index ffd52da8d8..7a4e1304bd 100644 --- a/zebra/if_netlink.c +++ b/zebra/if_netlink.c @@ -1182,6 +1182,14 @@ int interface_lookup_netlink(struct zebra_ns *zns) if (ret < 0) return ret; + ret = netlink_tunneldump_read(zns); + if (ret < 0) + return ret; + ret = netlink_parse_info(netlink_interface, netlink_cmd, &dp_info, 0, + true); + if (ret < 0) + return ret; + /* fixup linkages */ zebra_if_update_all_links(zns); return 0; @@ -2274,4 +2282,62 @@ uint8_t if_netlink_get_frr_protodown_r_bit(void) return frr_protodown_r_bit; } +/** + * netlink_request_tunneldump() - Request all tunnels from the linux kernel + * + * @zns: Zebra namespace + * @family: AF_* netlink family + * @type: RTM_* (RTM_GETTUNNEL) route type + * + * Return: Result status + */ +static int netlink_request_tunneldump(struct zebra_ns *zns, int family, + int ifindex) +{ + struct { + struct nlmsghdr n; + struct tunnel_msg tmsg; + char buf[256]; + } req; + + /* Form the request */ + memset(&req, 0, sizeof(req)); + req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tunnel_msg)); + req.n.nlmsg_type = RTM_GETTUNNEL; + req.n.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST; + req.tmsg.family = family; + req.tmsg.ifindex = ifindex; + + return netlink_request(&zns->netlink_cmd, &req); +} + +/* + * Currently we only ask for vxlan l3svd vni information. + * In the future this can be expanded. + */ +int netlink_tunneldump_read(struct zebra_ns *zns) +{ + int ret = 0; + struct zebra_dplane_info dp_info; + struct route_node *rn; + struct interface *tmp_if = NULL; + struct zebra_if *zif; + + zebra_dplane_info_from_zns(&dp_info, zns, true /*is_cmd*/); + + for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) { + tmp_if = (struct interface *)rn->info; + if (!tmp_if) + continue; + zif = tmp_if->info; + if (!zif || zif->zif_type != ZEBRA_IF_VXLAN) + continue; + + ret = netlink_request_tunneldump(zns, PF_BRIDGE, + tmp_if->ifindex); + if (ret < 0) + return ret; + } + return 0; +} #endif /* GNU_LINUX */ |