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author | Nikolay Aleksandrov <nikolay@cumulusnetworks.com> | 2019-10-29 13:45:57 +0200 |
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committer | David S. Miller <davem@davemloft.net> | 2019-10-29 18:12:49 -0700 |
commit | b5cd9f7c42480ede119a390607a9dbe6263f6795 (patch) | |
tree | 31771d35330324fefd0edcf910e36df59a447885 | |
parent | ac3ca6af443aa495c7907e5010ac77fbd2450eaa (diff) | |
download | linux-stable-b5cd9f7c42480ede119a390607a9dbe6263f6795.tar.gz linux-stable-b5cd9f7c42480ede119a390607a9dbe6263f6795.tar.bz2 linux-stable-b5cd9f7c42480ede119a390607a9dbe6263f6795.zip |
net: bridge: fdb: convert added_by_external_learn to use bitops
Convert the added_by_external_learn field to a flag and use bitops.
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r-- | net/bridge/br_fdb.c | 19 | ||||
-rw-r--r-- | net/bridge/br_private.h | 4 |
2 files changed, 11 insertions, 12 deletions
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index 6f00cca4afc8..83d6be3f87f1 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -76,7 +76,7 @@ static inline int has_expired(const struct net_bridge *br, const struct net_bridge_fdb_entry *fdb) { return !test_bit(BR_FDB_STATIC, &fdb->flags) && - !fdb->added_by_external_learn && + !test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags) && time_before_eq(fdb->updated + hold_time(br), jiffies); } @@ -352,7 +352,7 @@ void br_fdb_cleanup(struct work_struct *work) unsigned long this_timer; if (test_bit(BR_FDB_STATIC, &f->flags) || - f->added_by_external_learn) + test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &f->flags)) continue; this_timer = f->updated + delay; if (time_after(this_timer, now)) { @@ -506,7 +506,6 @@ static struct net_bridge_fdb_entry *fdb_create(struct net_bridge *br, set_bit(BR_FDB_LOCAL, &fdb->flags); if (is_static) set_bit(BR_FDB_STATIC, &fdb->flags); - fdb->added_by_external_learn = 0; fdb->offloaded = 0; fdb->updated = fdb->used = jiffies; if (rhashtable_lookup_insert_fast(&br->fdb_hash_tbl, @@ -593,8 +592,8 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source, fdb->dst = source; fdb_modified = true; /* Take over HW learned entry */ - if (unlikely(fdb->added_by_external_learn)) - fdb->added_by_external_learn = 0; + test_and_clear_bit(BR_FDB_ADDED_BY_EXT_LEARN, + &fdb->flags); } if (now != fdb->updated) fdb->updated = now; @@ -659,7 +658,7 @@ static int fdb_fill_info(struct sk_buff *skb, const struct net_bridge *br, if (fdb->offloaded) ndm->ndm_flags |= NTF_OFFLOADED; - if (fdb->added_by_external_learn) + if (test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags)) ndm->ndm_flags |= NTF_EXT_LEARNED; if (test_bit(BR_FDB_STICKY, &fdb->flags)) ndm->ndm_flags |= NTF_STICKY; @@ -1129,7 +1128,7 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, } if (swdev_notify) set_bit(BR_FDB_ADDED_BY_USER, &fdb->flags); - fdb->added_by_external_learn = 1; + set_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags); fdb_notify(br, fdb, RTM_NEWNEIGH, swdev_notify); } else { fdb->updated = jiffies; @@ -1139,12 +1138,12 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, modified = true; } - if (fdb->added_by_external_learn) { + if (test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags)) { /* Refresh entry */ fdb->used = jiffies; } else if (!test_bit(BR_FDB_ADDED_BY_USER, &fdb->flags)) { /* Take over SW learned entry */ - fdb->added_by_external_learn = 1; + set_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags); modified = true; } @@ -1171,7 +1170,7 @@ int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, spin_lock_bh(&br->hash_lock); fdb = br_fdb_find(br, addr, vid); - if (fdb && fdb->added_by_external_learn) + if (fdb && test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags)) fdb_delete(br, fdb, swdev_notify); else err = -ENOENT; diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index bf4a4d1cc3bb..cf325177a34e 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -178,6 +178,7 @@ enum { BR_FDB_STATIC, BR_FDB_STICKY, BR_FDB_ADDED_BY_USER, + BR_FDB_ADDED_BY_EXT_LEARN, }; struct net_bridge_fdb_key { @@ -192,8 +193,7 @@ struct net_bridge_fdb_entry { struct net_bridge_fdb_key key; struct hlist_node fdb_node; unsigned long flags; - unsigned char added_by_external_learn:1, - offloaded:1; + unsigned char offloaded:1; /* write-heavy members should not affect lookups */ unsigned long updated ____cacheline_aligned_in_smp; |