From 285ba06b0edb21af8c7702c5771c06392011020d Mon Sep 17 00:00:00 2001 From: Boris Sukholitko Date: Tue, 19 Apr 2022 11:14:30 +0300 Subject: [PATCH] net/sched: flower: Helper function for vlan ethtype checks There are somewhat repetitive ethertype checks in fl_set_key. Refactor them into is_vlan_key helper function. To make the changes clearer, avoid touching identation levels. This is the job for the next patch in the series. Signed-off-by: Boris Sukholitko Signed-off-by: David S. Miller --- net/sched/cls_flower.c | 32 +++++++++++++++++--------------- 1 file changed, 17 insertions(+), 15 deletions(-) diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c index 222b0b8fac7a..c88d69ebe2c8 100644 --- a/net/sched/cls_flower.c +++ b/net/sched/cls_flower.c @@ -1579,6 +1579,21 @@ static int fl_set_key_ct(struct nlattr **tb, return 0; } +static bool is_vlan_key(struct nlattr *tb, __be16 *ethertype, + struct fl_flow_key *key, struct fl_flow_key *mask) +{ + if (!tb) + return false; + + *ethertype = nla_get_be16(tb); + if (eth_type_vlan(*ethertype)) + return true; + + key->basic.n_proto = *ethertype; + mask->basic.n_proto = cpu_to_be16(~0); + return false; +} + static int fl_set_key(struct net *net, struct nlattr **tb, struct fl_flow_key *key, struct fl_flow_key *mask, struct netlink_ext_ack *extack) @@ -1601,18 +1616,13 @@ static int fl_set_key(struct net *net, struct nlattr **tb, mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK, sizeof(key->eth.src)); - if (tb[TCA_FLOWER_KEY_ETH_TYPE]) { - ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]); - - if (eth_type_vlan(ethertype)) { + if (is_vlan_key(tb[TCA_FLOWER_KEY_ETH_TYPE], ðertype, key, mask)) { fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_VLAN_ID, TCA_FLOWER_KEY_VLAN_PRIO, TCA_FLOWER_KEY_VLAN_ETH_TYPE, &key->vlan, &mask->vlan); - if (tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]) { - ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE]); - if (eth_type_vlan(ethertype)) { + if (is_vlan_key(tb[TCA_FLOWER_KEY_VLAN_ETH_TYPE], ðertype, key, mask)) { fl_set_key_vlan(tb, ethertype, TCA_FLOWER_KEY_CVLAN_ID, TCA_FLOWER_KEY_CVLAN_PRIO, @@ -1623,15 +1633,7 @@ static int fl_set_key(struct net *net, struct nlattr **tb, &mask->basic.n_proto, TCA_FLOWER_UNSPEC, sizeof(key->basic.n_proto)); - } else { - key->basic.n_proto = ethertype; - mask->basic.n_proto = cpu_to_be16(~0); - } } - } else { - key->basic.n_proto = ethertype; - mask->basic.n_proto = cpu_to_be16(~0); - } } if (key->basic.n_proto == htons(ETH_P_IP) || -- 2.34.1