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net/mlx5e: Allow partial data mask for tunnel options 

We use mapping to save and restore the tunnel options.
Save also the tunnel options mask.

Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Roi Dayan 2020-03-25 11:32:56 +02:00 committed by Saeed Mahameed
parent 82fe299641
commit d7a42ad062
1 changed files with 22 additions and 10 deletions
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32
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
View File

@ -171,6 +171,11 @@ struct tunnel_match_key {
int filter_ifindex;
};
struct tunnel_match_enc_opts {
struct flow_dissector_key_enc_opts key;
struct flow_dissector_key_enc_opts mask;
};
/* Tunnel_id mapping is TUNNEL_INFO_BITS + ENC_OPTS_BITS.
* Upper TUNNEL_INFO_BITS for general tunnel info.
* Lower ENC_OPTS_BITS bits for enc_opts.
@ -1824,9 +1829,7 @@ enc_opts_is_dont_care_or_full_match(struct mlx5e_priv *priv,
*dont_care = false;
if (opt->opt_class != U16_MAX ||
opt->type != U8_MAX ||
memchr_inv(opt->opt_data, 0xFF,
opt->length * 4)) {
opt->type != U8_MAX) {
NL_SET_ERR_MSG(extack,
"Partial match of tunnel options in chain > 0 isn't supported");
netdev_warn(priv->netdev,
@ -1863,6 +1866,7 @@ static int mlx5e_get_flow_tunnel_id(struct mlx5e_priv *priv,
struct mlx5_esw_flow_attr *attr = flow->esw_attr;
struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts;
struct flow_match_enc_opts enc_opts_match;
struct tunnel_match_enc_opts tun_enc_opts;
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5e_rep_priv *uplink_rpriv;
struct tunnel_match_key tunnel_key;
@ -1905,8 +1909,14 @@ static int mlx5e_get_flow_tunnel_id(struct mlx5e_priv *priv,
goto err_enc_opts;
if (!enc_opts_is_dont_care) {
memset(&tun_enc_opts, 0, sizeof(tun_enc_opts));
memcpy(&tun_enc_opts.key, enc_opts_match.key,
sizeof(*enc_opts_match.key));
memcpy(&tun_enc_opts.mask, enc_opts_match.mask,
sizeof(*enc_opts_match.mask));
err = mapping_add(uplink_priv->tunnel_enc_opts_mapping,
enc_opts_match.key, &enc_opts_id);
&tun_enc_opts, &enc_opts_id);
if (err)
goto err_enc_opts;
}
@ -4707,7 +4717,7 @@ void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv)
int mlx5e_tc_esw_init(struct rhashtable *tc_ht)
{
const size_t sz_enc_opts = sizeof(struct flow_dissector_key_enc_opts);
const size_t sz_enc_opts = sizeof(struct tunnel_match_enc_opts);
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5e_rep_priv *priv;
struct mapping_ctx *mapping;
@ -4802,7 +4812,7 @@ static bool mlx5e_restore_tunnel(struct mlx5e_priv *priv, struct sk_buff *skb,
u32 tunnel_id)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct flow_dissector_key_enc_opts enc_opts = {};
struct tunnel_match_enc_opts enc_opts = {};
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5e_rep_priv *uplink_rpriv;
struct metadata_dst *tun_dst;
@ -4840,7 +4850,7 @@ static bool mlx5e_restore_tunnel(struct mlx5e_priv *priv, struct sk_buff *skb,
}
}
tun_dst = tun_rx_dst(enc_opts.len);
tun_dst = tun_rx_dst(enc_opts.key.len);
if (!tun_dst) {
WARN_ON_ONCE(true);
return false;
@ -4854,9 +4864,11 @@ static bool mlx5e_restore_tunnel(struct mlx5e_priv *priv, struct sk_buff *skb,
key32_to_tunnel_id(key.enc_key_id.keyid),
TUNNEL_KEY);
if (enc_opts.len)
ip_tunnel_info_opts_set(&tun_dst->u.tun_info, enc_opts.data,
enc_opts.len, enc_opts.dst_opt_type);
if (enc_opts.key.len)
ip_tunnel_info_opts_set(&tun_dst->u.tun_info,
enc_opts.key.data,
enc_opts.key.len,
enc_opts.key.dst_opt_type);
skb_dst_set(skb, (struct dst_entry *)tun_dst);
dev = dev_get_by_index(&init_net, key.filter_ifindex);