diff options
author | Louis Peens <louis.peens@corigine.com> | 2021-06-02 14:59:46 +0300 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2021-06-03 00:04:41 +0300 |
commit | c8b034fbeba55847be999595d63ad7d04f06c141 (patch) | |
tree | 82c9ce2c01b2d8bc5e767b4420728f68fdc71799 /drivers | |
parent | 2bda0a5e3bf8924cc6dc5955df610defa10d70e7 (diff) | |
download | linux-c8b034fbeba55847be999595d63ad7d04f06c141.tar.xz |
nfp: flower-ct: add pre and post ct checks
Add checks to see if a flow is a conntrack flow we can potentially
handle. Just stub out the handling the different conntrack flows.
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Yinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
4 files changed, 102 insertions, 1 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/Makefile b/drivers/net/ethernet/netronome/nfp/Makefile index d31772ae511d..9cff3d48acbc 100644 --- a/drivers/net/ethernet/netronome/nfp/Makefile +++ b/drivers/net/ethernet/netronome/nfp/Makefile @@ -51,7 +51,8 @@ nfp-objs += \ flower/metadata.o \ flower/offload.o \ flower/tunnel_conf.o \ - flower/qos_conf.o + flower/qos_conf.o \ + flower/conntrack.o endif ifeq ($(CONFIG_BPF_SYSCALL),y) diff --git a/drivers/net/ethernet/netronome/nfp/flower/conntrack.c b/drivers/net/ethernet/netronome/nfp/flower/conntrack.c new file mode 100644 index 000000000000..aeea37a0135e --- /dev/null +++ b/drivers/net/ethernet/netronome/nfp/flower/conntrack.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +/* Copyright (C) 2021 Corigine, Inc. */ + +#include "conntrack.h" + +bool is_pre_ct_flow(struct flow_cls_offload *flow) +{ + struct flow_action_entry *act; + int i; + + flow_action_for_each(i, act, &flow->rule->action) { + if (act->id == FLOW_ACTION_CT && !act->ct.action) + return true; + } + return false; +} + +bool is_post_ct_flow(struct flow_cls_offload *flow) +{ + struct flow_rule *rule = flow_cls_offload_flow_rule(flow); + struct flow_dissector *dissector = rule->match.dissector; + struct flow_match_ct ct; + + if (dissector->used_keys & BIT(FLOW_DISSECTOR_KEY_CT)) { + flow_rule_match_ct(rule, &ct); + if (ct.key->ct_state & TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED) + return true; + } + return false; +} + +int nfp_fl_ct_handle_pre_ct(struct nfp_flower_priv *priv, + struct net_device *netdev, + struct flow_cls_offload *flow, + struct netlink_ext_ack *extack) +{ + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: Conntrack action not supported"); + return -EOPNOTSUPP; +} + +int nfp_fl_ct_handle_post_ct(struct nfp_flower_priv *priv, + struct net_device *netdev, + struct flow_cls_offload *flow, + struct netlink_ext_ack *extack) +{ + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: Conntrack match not supported"); + return -EOPNOTSUPP; +} diff --git a/drivers/net/ethernet/netronome/nfp/flower/conntrack.h b/drivers/net/ethernet/netronome/nfp/flower/conntrack.h new file mode 100644 index 000000000000..e8d034bb9807 --- /dev/null +++ b/drivers/net/ethernet/netronome/nfp/flower/conntrack.h @@ -0,0 +1,45 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* Copyright (C) 2021 Corigine, Inc. */ + +#ifndef __NFP_FLOWER_CONNTRACK_H__ +#define __NFP_FLOWER_CONNTRACK_H__ 1 + +#include "main.h" + +bool is_pre_ct_flow(struct flow_cls_offload *flow); +bool is_post_ct_flow(struct flow_cls_offload *flow); + +/** + * nfp_fl_ct_handle_pre_ct() - Handles -trk conntrack rules + * @priv: Pointer to app priv + * @netdev: netdev structure. + * @flow: TC flower classifier offload structure. + * @extack: Extack pointer for errors + * + * Adds a new entry to the relevant zone table and tries to + * merge with other +trk+est entries and offload if possible. + * + * Return: negative value on error, 0 if configured successfully. + */ +int nfp_fl_ct_handle_pre_ct(struct nfp_flower_priv *priv, + struct net_device *netdev, + struct flow_cls_offload *flow, + struct netlink_ext_ack *extack); +/** + * nfp_fl_ct_handle_post_ct() - Handles +trk+est conntrack rules + * @priv: Pointer to app priv + * @netdev: netdev structure. + * @flow: TC flower classifier offload structure. + * @extack: Extack pointer for errors + * + * Adds a new entry to the relevant zone table and tries to + * merge with other -trk entries and offload if possible. + * + * Return: negative value on error, 0 if configured successfully. + */ +int nfp_fl_ct_handle_post_ct(struct nfp_flower_priv *priv, + struct net_device *netdev, + struct flow_cls_offload *flow, + struct netlink_ext_ack *extack); + +#endif diff --git a/drivers/net/ethernet/netronome/nfp/flower/offload.c b/drivers/net/ethernet/netronome/nfp/flower/offload.c index 16ef960a150d..7e4ad5d58859 100644 --- a/drivers/net/ethernet/netronome/nfp/flower/offload.c +++ b/drivers/net/ethernet/netronome/nfp/flower/offload.c @@ -7,6 +7,7 @@ #include "cmsg.h" #include "main.h" +#include "conntrack.h" #include "../nfpcore/nfp_cpp.h" #include "../nfpcore/nfp_nsp.h" #include "../nfp_app.h" @@ -1316,6 +1317,12 @@ nfp_flower_add_offload(struct nfp_app *app, struct net_device *netdev, if (nfp_netdev_is_nfp_repr(netdev)) port = nfp_port_from_netdev(netdev); + if (is_pre_ct_flow(flow)) + return nfp_fl_ct_handle_pre_ct(priv, netdev, flow, extack); + + if (is_post_ct_flow(flow)) + return nfp_fl_ct_handle_post_ct(priv, netdev, flow, extack); + if (!offload_pre_check(flow)) return -EOPNOTSUPP; |