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cls_flower: Add extack support for mpls options

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Pass extack down to fl_set_key_mpls() and set message on error.

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guillaume Nault 2020-03-23 21:48:49 +01:00 committed by David S. Miller
parent e4a58ef3ce
commit 442f730e48
1 changed files with 18 additions and 5 deletions
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23
net/sched/cls_flower.c
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@ -766,7 +766,8 @@ static int fl_set_key_port_range(struct nlattr **tb, struct fl_flow_key *key,
static int fl_set_key_mpls(struct nlattr **tb, static int fl_set_key_mpls(struct nlattr **tb,
struct flow_dissector_key_mpls *key_val, struct flow_dissector_key_mpls *key_val,
struct flow_dissector_key_mpls *key_mask) struct flow_dissector_key_mpls *key_mask,
struct netlink_ext_ack *extack)
{ {
if (tb[TCA_FLOWER_KEY_MPLS_TTL]) { if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
key_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]); key_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
@ -775,24 +776,36 @@ static int fl_set_key_mpls(struct nlattr **tb,
if (tb[TCA_FLOWER_KEY_MPLS_BOS]) { if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]); u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
if (bos & ~MPLS_BOS_MASK) if (bos & ~MPLS_BOS_MASK) {
NL_SET_ERR_MSG_ATTR(extack,
tb[TCA_FLOWER_KEY_MPLS_BOS],
"Bottom Of Stack (BOS) must be 0 or 1");
return -EINVAL; return -EINVAL;
}
key_val->mpls_bos = bos; key_val->mpls_bos = bos;
key_mask->mpls_bos = MPLS_BOS_MASK; key_mask->mpls_bos = MPLS_BOS_MASK;
} }
if (tb[TCA_FLOWER_KEY_MPLS_TC]) { if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]); u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
if (tc & ~MPLS_TC_MASK) if (tc & ~MPLS_TC_MASK) {
NL_SET_ERR_MSG_ATTR(extack,
tb[TCA_FLOWER_KEY_MPLS_TC],
"Traffic Class (TC) must be between 0 and 7");
return -EINVAL; return -EINVAL;
}
key_val->mpls_tc = tc; key_val->mpls_tc = tc;
key_mask->mpls_tc = MPLS_TC_MASK; key_mask->mpls_tc = MPLS_TC_MASK;
} }
if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) { if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]); u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
if (label & ~MPLS_LABEL_MASK) if (label & ~MPLS_LABEL_MASK) {
NL_SET_ERR_MSG_ATTR(extack,
tb[TCA_FLOWER_KEY_MPLS_LABEL],
"Label must be between 0 and 1048575");
return -EINVAL; return -EINVAL;
}
key_val->mpls_label = label; key_val->mpls_label = label;
key_mask->mpls_label = MPLS_LABEL_MASK; key_mask->mpls_label = MPLS_LABEL_MASK;
} }
@ -1364,7 +1377,7 @@ static int fl_set_key(struct net *net, struct nlattr **tb,
sizeof(key->icmp.code)); sizeof(key->icmp.code));
} else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) || } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
key->basic.n_proto == htons(ETH_P_MPLS_MC)) { key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls); ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls, extack);
if (ret) if (ret)
return ret; return ret;
} else if (key->basic.n_proto == htons(ETH_P_ARP) || } else if (key->basic.n_proto == htons(ETH_P_ARP) ||