ipng/lcpng
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Accommodate Netgate's usecase, they create the linux netlink device first, and then call the pair_create; in that case, linux_parent_if_index already exists; simplify the call path here, h/t mgsmith@

Browse Source
This commit is contained in:
Pim van Pelt
2021-09-08 18:41:35 +00:00
parent 36f1ebfdae
commit 3c806d586d
1 changed files with 33 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

57
lcpng_interface.c
View File

@ -790,13 +790,13 @@ lcp_itf_pair_create (u32 phy_sw_if_index, u8 *host_if_name,
/* sub interfaces do not need a tap created */
if (vnet_sw_interface_is_sub (vnm, phy_sw_if_index))
{
const lcp_itf_pair_t *llip;
index_t parent_if_index, linux_parent_if_index;
index_t parent_if_index;
int orig_ns_fd, vif_ns_fd;
clib_error_t *err;
u16 outer_vlan, inner_vlan;
u16 outer_proto, inner_proto;
u16 vlan, proto;
u32 parent_vif_index;
if (sw->type == VNET_SW_INTERFACE_TYPE_SUB && sw->sub.eth.flags.exact_match == 0) {
LCP_ITF_PAIR_ERR ("pair_create: can't create LCP for a sub-interface without exact-match set");
@ -828,6 +828,8 @@ lcp_itf_pair_create (u32 phy_sw_if_index, u8 *host_if_name,
"sub-interface without an LCP on the parent");
return VNET_API_ERROR_INVALID_ARGUMENT;
}
LCP_ITF_PAIR_DBG ("pair_create: parent %U", format_lcp_itf_pair, lip);
parent_vif_index = lip->lip_vif_index;
/*
* Find the parent tap:
@ -835,32 +837,39 @@ lcp_itf_pair_create (u32 phy_sw_if_index, u8 *host_if_name,
* - if this is an inner VLAN, find the pair from the outer sub-int, which must exist.
*/
if (inner_vlan) {
vlan=inner_vlan;
proto=inner_proto;
linux_parent_if_index = lcp_itf_pair_find_by_outer_vlan (
sw->sup_sw_if_index, sw->sub.eth.outer_vlan_id,
sw->sub.eth.flags.dot1ad);
if (INDEX_INVALID == linux_parent_if_index) {
LCP_ITF_PAIR_ERR ("pair_create: can't find LCP for outer vlan %d proto %s on %U",
outer_vlan, outer_proto==ETH_P_8021AD?"dot1ad":"dot1q",
format_vnet_sw_if_index_name, vnet_get_main (), hw->sw_if_index);
return VNET_API_ERROR_INVALID_SW_IF_INDEX;
}
index_t linux_parent_if_index;
const lcp_itf_pair_t *llip;
vlan = inner_vlan;
proto = inner_proto;
linux_parent_if_index = lcp_itf_pair_find_by_outer_vlan (
sw->sup_sw_if_index, sw->sub.eth.outer_vlan_id,
sw->sub.eth.flags.dot1ad);
if (INDEX_INVALID == linux_parent_if_index)
{
LCP_ITF_PAIR_ERR (
"pair_create: can't find LCP for outer vlan %d proto %s on %U",
outer_vlan, outer_proto == ETH_P_8021AD ? "dot1ad" : "dot1q",
format_vnet_sw_if_index_name, vnet_get_main (),
hw->sw_if_index);
return VNET_API_ERROR_INVALID_SW_IF_INDEX;
}
llip = lcp_itf_pair_get (linux_parent_if_index);
if (!llip)
{
LCP_ITF_PAIR_ERR ("pair_create: can't create LCP for a "
"sub-interface without a valid Linux parent");
return VNET_API_ERROR_INVALID_ARGUMENT;
}
LCP_ITF_PAIR_DBG ("pair_create: linux parent %U",
format_lcp_itf_pair, llip);
parent_vif_index = llip->lip_vif_index;
} else {
vlan=outer_vlan;
proto=outer_proto;
linux_parent_if_index = parent_if_index;
}
llip = lcp_itf_pair_get (linux_parent_if_index);
if (!llip) {
LCP_ITF_PAIR_ERR ("pair_create: can't create LCP for a sub-interface without a valid Linux parent");
return VNET_API_ERROR_INVALID_ARGUMENT;
}
LCP_ITF_PAIR_DBG ("pair_create: parent %U", format_lcp_itf_pair, lip);
LCP_ITF_PAIR_DBG ("pair_create: linux parent %U", format_lcp_itf_pair, llip);
/*
* see if the requested host interface has already been created
*/
@ -884,7 +893,7 @@ lcp_itf_pair_create (u32 phy_sw_if_index, u8 *host_if_name,
/*
* no existing host interface, create it now
*/
err = lcp_netlink_add_link_vlan (llip->lip_vif_index, vlan, proto,
err = lcp_netlink_add_link_vlan (parent_vif_index, vlan, proto,
(const char *) host_if_name);
if (err != 0) {
LCP_ITF_PAIR_ERR ("pair_create: cannot create link outer(proto:0x%04x,vlan:%u).inner(proto:0x%04x,vlan:%u) name:'%s'",