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platform: consider RTNH_F_ONLINK onlink flag for IPv4 routes

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The "onlink" flag for IPv4 routes is part of the route ID.
Consider it in nm_platform_ip4_route_cmp().

Also, allow configuring the flag when adding a route.

Note that for IPv6, the onlink flag is still ignored.
Pretty much like kernel does.
This commit is contained in:
Thomas Haller
2017-11-07 16:26:58 +01:00
parent 81778f59f2
commit 88a40f960c
3 changed files with 11 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/platform/nm-linux-platform.c
View File

@@ -2690,7 +2690,9 @@ _nl_msg_new_route (int nlmsg_type,
? nm_platform_route_scope_inv (obj->ip4_route.scope_inv)
: RT_SCOPE_NOWHERE,
.rtm_type = RTN_UNICAST,
.rtm_flags = 0,
.rtm_flags = obj->ip_route.r_rtm_flags & (is_v4
? (unsigned) (RTNH_F_ONLINK)
: (unsigned) 0),
.rtm_dst_len = obj->ip_route.plen,
.rtm_src_len = is_v4
? 0

9
src/platform/nm-platform.c
View File

@@ -5574,6 +5574,7 @@ nm_platform_ip4_route_hash_update (const NMPlatformIP4Route *obj, NMPlatformIPRo
obj->initcwnd,
obj->initrwnd,
obj->mtu,
obj->r_rtm_flags & RTNH_F_ONLINK,
NM_HASH_COMBINE_BOOLS (guint8,
obj->lock_window,
obj->lock_cwnd,
@@ -5599,7 +5600,7 @@ nm_platform_ip4_route_hash_update (const NMPlatformIP4Route *obj, NMPlatformIPRo
obj->initcwnd,
obj->initrwnd,
obj->mtu,
obj->r_rtm_flags & RTM_F_CLONED,
obj->r_rtm_flags & (RTM_F_CLONED | RTNH_F_ONLINK),
NM_HASH_COMBINE_BOOLS (guint8,
obj->lock_window,
obj->lock_cwnd,
@@ -5663,6 +5664,8 @@ nm_platform_ip4_route_cmp (const NMPlatformIP4Route *a, const NMPlatformIP4Route
NM_CMP_FIELD (a, b, initcwnd);
NM_CMP_FIELD (a, b, initrwnd);
NM_CMP_FIELD (a, b, mtu);
NM_CMP_DIRECT (a->r_rtm_flags & RTNH_F_ONLINK,
b->r_rtm_flags & RTNH_F_ONLINK);
NM_CMP_FIELD_UNSAFE (a, b, lock_window);
NM_CMP_FIELD_UNSAFE (a, b, lock_cwnd);
NM_CMP_FIELD_UNSAFE (a, b, lock_initcwnd);
@@ -5697,8 +5700,8 @@ nm_platform_ip4_route_cmp (const NMPlatformIP4Route *a, const NMPlatformIP4Route
NM_CMP_FIELD (a, b, mss);
NM_CMP_FIELD (a, b, pref_src);
if (cmp_type == NM_PLATFORM_IP_ROUTE_CMP_TYPE_SEMANTICALLY) {
NM_CMP_DIRECT (a->r_rtm_flags & RTM_F_CLONED,
b->r_rtm_flags & RTM_F_CLONED);
NM_CMP_DIRECT (a->r_rtm_flags & (RTM_F_CLONED | RTNH_F_ONLINK),
b->r_rtm_flags & (RTM_F_CLONED | RTNH_F_ONLINK));
} else
NM_CMP_FIELD (a, b, r_rtm_flags);
NM_CMP_FIELD (a, b, tos);

3
src/platform/nm-platform.h
View File

@@ -400,7 +400,8 @@ typedef union {
* do not exist from the point-of-view of platform users.
* Such a route is not alive, according to nmp_object_is_alive().
*
* XXX: currently we ignore all flags except RTM_F_CLONED.
* XXX: currently we ignore all flags except RTM_F_CLONED
* and RTNH_F_ONLINK for IPv4.
* We also may not properly consider the flags as part of the ID
* in route-cmp. */ \
unsigned r_rtm_flags; \