From e2fe097424fb169dfe01421ff17b8ccd0c26b4a6 Mon Sep 17 00:00:00 2001
From: Neale Ranns <neale.ranns@cisco.com>
Date: Thu, 26 Nov 2020 08:37:27 +0000
Subject: fib: Source Address Selection

Type: feature

Use the FIB to provide SAS (in so far as it is today)
 - Use the glean adjacency as the record of the connected prefixes
 = there's a glean per-{interface, protocol, connected-prefix}
 - Keep the glean up to date with whatever the recieve host prefix is
(since it can change)

Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
Change-Id: I0f3dd1edb1f3fc965af1c7c586709028eb9cdeac
---
 src/plugins/ping/ping.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

(limited to 'src/plugins/ping/ping.c')

diff --git a/src/plugins/ping/ping.c b/src/plugins/ping/ping.c
index 0ce4f9698f0..98add533407 100644
--- a/src/plugins/ping/ping.c
+++ b/src/plugins/ping/ping.c
@@ -18,7 +18,7 @@
 #include <vlib/vlib.h>
 #include <vnet/fib/ip6_fib.h>
 #include <vnet/fib/ip4_fib.h>
-#include <vnet/fib/fib_entry.h>
+#include <vnet/fib/fib_sas.h>
 #include <vnet/ip/ip6_link.h>
 #include <vnet/plugin/plugin.h>
 #include <vpp/app/version.h>
@@ -725,24 +725,22 @@ ip46_fill_l3_header (ip46_address_t * pa46, vlib_buffer_t * b0, int is_ip6)
     }
 }
 
-static int
+static bool
 ip46_set_src_address (u32 sw_if_index, vlib_buffer_t * b0, int is_ip6)
 {
-  int res;
+  bool res = false;
+
   if (is_ip6)
     {
       ip6_header_t *ip6 = vlib_buffer_get_current (b0);
-      res = ip6_src_address_for_packet (sw_if_index,
-					&ip6->dst_address, &ip6->src_address);
+
+      res = fib_sas6_get (sw_if_index, &ip6->dst_address, &ip6->src_address);
     }
   else
     {
-      ip4_main_t *im = &ip4_main;
       ip4_header_t *ip4 = vlib_buffer_get_current (b0);
-      res = ip4_src_address_for_packet (&im->lookup_main,
-					sw_if_index, &ip4->src_address);
-      /* IP4 and IP6 paths have the inverse logic. Harmonize. */
-      res = !res;
+
+      res = fib_sas4_get (sw_if_index, &ip4->dst_address, &ip4->src_address);
     }
   return res;
 }
-- 
cgit 1.2.3-korg