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author | Edward Cree <ecree.xilinx@gmail.com> | 2022-07-28 19:57:49 +0100 |
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committer | Jakub Kicinski <kuba@kernel.org> | 2022-07-29 21:22:06 -0700 |
commit | 67ab160ed08f5bb55aff55aa41e6bde56cb83661 (patch) | |
tree | 611feea2a240f51fa9948d70dff15b1887d90f61 /drivers/net/ethernet/sfc/tc.h | |
parent | sfc: receive packets from EF100 VFs into representors (diff) | |
download | wireguard-linux-67ab160ed08f5bb55aff55aa41e6bde56cb83661.tar.xz wireguard-linux-67ab160ed08f5bb55aff55aa41e6bde56cb83661.zip |
sfc: insert default MAE rules to connect VFs to representors
Default rules are low-priority switching rules which the hardware uses
in the absence of higher-priority rules. Each representor requires a
corresponding rule matching traffic from its representee VF and
delivering to the PF (where a check on INGRESS_MPORT in
__ef100_rx_packet() will direct it to the representor). No rule is
required in the reverse direction, because representor TX uses a TX
override descriptor to bypass the MAE and deliver directly to the VF.
Since inserting any rule into the MAE disables the firmware's own
default rules, also insert a pair of rules to connect the PF to the
physical network port and vice-versa.
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to '')
-rw-r--r-- | drivers/net/ethernet/sfc/tc.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/tc.h b/drivers/net/ethernet/sfc/tc.h new file mode 100644 index 000000000000..46c5101eaa8d --- /dev/null +++ b/drivers/net/ethernet/sfc/tc.h @@ -0,0 +1,76 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/**************************************************************************** + * Driver for Solarflare network controllers and boards + * Copyright 2019 Solarflare Communications Inc. + * Copyright 2020-2022 Xilinx Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation, incorporated herein by reference. + */ + +#ifndef EFX_TC_H +#define EFX_TC_H +#include "net_driver.h" + +struct efx_tc_action_set { + u16 deliver:1; + u32 dest_mport; + u32 fw_id; /* index of this entry in firmware actions table */ + struct list_head list; +}; + +struct efx_tc_match_fields { + /* L1 */ + u32 ingress_port; +}; + +struct efx_tc_match { + struct efx_tc_match_fields value; + struct efx_tc_match_fields mask; +}; + +struct efx_tc_action_set_list { + struct list_head list; + u32 fw_id; +}; + +struct efx_tc_flow_rule { + struct efx_tc_match match; + struct efx_tc_action_set_list acts; + u32 fw_id; +}; + +enum efx_tc_rule_prios { + EFX_TC_PRIO_DFLT, /* Default switch rule; one of efx_tc_default_rules */ + EFX_TC_PRIO__NUM +}; + +/** + * struct efx_tc_state - control plane data for TC offload + * + * @dflt: Match-action rules for default switching; at priority + * %EFX_TC_PRIO_DFLT. Named by *ingress* port + * @dflt.pf: rule for traffic ingressing from PF (egresses to wire) + * @dflt.wire: rule for traffic ingressing from wire (egresses to PF) + */ +struct efx_tc_state { + struct { + struct efx_tc_flow_rule pf; + struct efx_tc_flow_rule wire; + } dflt; +}; + +struct efx_rep; + +int efx_tc_configure_default_rule_rep(struct efx_rep *efv); +void efx_tc_deconfigure_default_rule(struct efx_nic *efx, + struct efx_tc_flow_rule *rule); + +int efx_init_tc(struct efx_nic *efx); +void efx_fini_tc(struct efx_nic *efx); + +int efx_init_struct_tc(struct efx_nic *efx); +void efx_fini_struct_tc(struct efx_nic *efx); + +#endif /* EFX_TC_H */ |