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authorPim van Pelt <pim@ipng.nl>2021-09-09 17:53:09 +0000
committerMatthew Smith <mgsmith@netgate.com>2022-01-11 19:31:25 +0000
commit1705a6baefe205bb6792b547c7376eee3f328a71 (patch)
treee524c5abb4cc39b735fa55a643475482206b49b9 /src/plugins/linux-cp/lcp.c
parent0cef5f5d7171e05389beee0e6b4250b366b2b28e (diff)
linux-cp: Add VPP->Linux synchronization
Part 1 -- notes in https://ipng.ch/s/articles/2021/08/13/vpp-2.html Add the ability for VPP to copy out (sync) its state from the dataplane to Linux Interface Pairs, when they exist. Gated by a configuration flag (linux-cp { lcp-sync }), and by a CLI option to toggle on/off, synchronize the following events: - Interface state changes - Interface MTU changes - Interface IPv4/IPv6 address add/deletion In VPP, subints can have any link state and MTU, orthogonal to their phy. In Linux, setting admin-down on a phy forces its children to be down as well. Also, in Linux, MTU of children must not exceed that of the phy. Add a state synchronizer which walks over phy+subints to ensure Linux and VPP end up in the same consistent state. Part 2 -- notes in https://ipng.ch/s/articles/2021/08/15/vpp-3.html Add the ability for VPP to autocreate sub-interfaces of existing Linux Interface pairs. Gated by a configuration flag (linux-cp { lcp-auto-subint }), and by a CLI option to toggle on/off, synchronize the following event: - Sub-interface creation (dot1q, dot1ad, QinQ and QinAD) A few other changes: - Add two functions into netlink.[ch] to delete ip4 and ip6 addresses. - Remove a spurious logline (printing MTU) in netlink.c. - Resolve a TODO around vnet_sw_interface_supports_addressing() Type: improvement Signed-off-by: Pim van Pelt <pim@ipng.nl> Change-Id: I34fc070e80af4013be58d7a8cbf64296cc760e4e Signed-off-by: Pim van Pelt <pim@ipng.nl>
Diffstat (limited to 'src/plugins/linux-cp/lcp.c')
-rw-r--r--src/plugins/linux-cp/lcp.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/src/plugins/linux-cp/lcp.c b/src/plugins/linux-cp/lcp.c
index a4d3faf081a..69a7a6e42ba 100644
--- a/src/plugins/linux-cp/lcp.c
+++ b/src/plugins/linux-cp/lcp.c
@@ -20,6 +20,7 @@
#include <net/if.h>
#include <plugins/linux-cp/lcp.h>
+#include <plugins/linux-cp/lcp_interface.h>
lcp_main_t lcp_main;
@@ -76,6 +77,42 @@ lcp_set_default_ns (u8 *ns)
return 0;
}
+void
+lcp_set_sync (u8 is_auto)
+{
+ lcp_main_t *lcpm = &lcp_main;
+
+ lcpm->lcp_sync = (is_auto != 0);
+
+ // If we set to 'on', do a one-off sync of LCP interfaces
+ if (is_auto)
+ lcp_itf_pair_sync_state_all ();
+}
+
+int
+lcp_sync (void)
+{
+ lcp_main_t *lcpm = &lcp_main;
+
+ return lcpm->lcp_sync;
+}
+
+void
+lcp_set_auto_subint (u8 is_auto)
+{
+ lcp_main_t *lcpm = &lcp_main;
+
+ lcpm->lcp_auto_subint = (is_auto != 0);
+}
+
+int
+lcp_auto_subint (void)
+{
+ lcp_main_t *lcpm = &lcp_main;
+
+ return lcpm->lcp_auto_subint;
+}
+
/*
* fd.io coding-style-patch-verification: ON
*