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authorDavid Ahern <dsahern@gmail.com>2019-04-02 14:11:55 -0700
committerDavid S. Miller <davem@davemloft.net>2019-04-03 21:50:20 -0700
commiteba618abacade71669eb67c3360eecfee810cc88 (patch)
treecfc98d4a5fefbcc07d586bcec602a9853bae2aa0 /net/ipv4/fib_trie.c
parentipv4: Update fib_table_lookup tracepoint to take common nexthop (diff)
downloadlinux-dev-eba618abacade71669eb67c3360eecfee810cc88.tar.xz
linux-dev-eba618abacade71669eb67c3360eecfee810cc88.zip
ipv4: Add fib_nh_common to fib_result
Most of the ipv4 code only needs data from fib_nh_common. Add fib_nh_common selection to fib_result and update users to use it. Right now, fib_nh_common in fib_result will point to a fib_nh struct that is embedded within a fib_info: fib_info --> fib_nh fib_nh ... fib_nh ^ fib_result->nhc ----+ Later, nhc can point to a fib_nh within a nexthop struct: fib_info --> nexthop --> fib_nh ^ fib_result->nhc ---------------+ or for a nexthop group: fib_info --> nexthop --> nexthop --> fib_nh nexthop --> fib_nh ... nexthop --> fib_nh ^ fib_result->nhc ---------------------------+ In all cases nhsel within fib_result will point to which leg in the multipath route is used. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/fib_trie.c')
-rw-r--r--net/ipv4/fib_trie.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 13b3327206f9..334f723bdf80 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1470,17 +1470,17 @@ found:
if (fi->fib_flags & RTNH_F_DEAD)
continue;
for (nhsel = 0; nhsel < fi->fib_nhs; nhsel++) {
- const struct fib_nh *nh = &fi->fib_nh[nhsel];
+ struct fib_nh_common *nhc = fib_info_nhc(fi, nhsel);
- if (nh->fib_nh_flags & RTNH_F_DEAD)
+ if (nhc->nhc_flags & RTNH_F_DEAD)
continue;
- if (ip_ignore_linkdown(nh->fib_nh_dev) &&
- nh->fib_nh_flags & RTNH_F_LINKDOWN &&
+ if (ip_ignore_linkdown(nhc->nhc_dev) &&
+ nhc->nhc_flags & RTNH_F_LINKDOWN &&
!(fib_flags & FIB_LOOKUP_IGNORE_LINKSTATE))
continue;
if (!(flp->flowi4_flags & FLOWI_FLAG_SKIP_NH_OIF)) {
if (flp->flowi4_oif &&
- flp->flowi4_oif != nh->fib_nh_oif)
+ flp->flowi4_oif != nhc->nhc_oif)
continue;
}
@@ -1490,6 +1490,7 @@ found:
res->prefix = htonl(n->key);
res->prefixlen = KEYLENGTH - fa->fa_slen;
res->nh_sel = nhsel;
+ res->nhc = nhc;
res->type = fa->fa_type;
res->scope = fi->fib_scope;
res->fi = fi;
@@ -1498,7 +1499,7 @@ found:
#ifdef CONFIG_IP_FIB_TRIE_STATS
this_cpu_inc(stats->semantic_match_passed);
#endif
- trace_fib_table_lookup(tb->tb_id, flp, &nh->nh_common, err);
+ trace_fib_table_lookup(tb->tb_id, flp, nhc, err);
return err;
}