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Date: Fri, 12 May 2023 11:22:05 -0700
From: Stanislav Fomichev <sdf@...gle.com>
To: Larysa Zaremba <larysa.zaremba@...el.com>
Cc: bpf@...r.kernel.org, Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>, Andrii Nakryiko <andrii@...nel.org>,
Jakub Kicinski <kuba@...nel.org>, Martin KaFai Lau <martin.lau@...ux.dev>, Song Liu <song@...nel.org>,
Yonghong Song <yhs@...com>, John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>,
Jiri Olsa <jolsa@...nel.org>, Jesse Brandeburg <jesse.brandeburg@...el.com>,
Tony Nguyen <anthony.l.nguyen@...el.com>, Anatoly Burakov <anatoly.burakov@...el.com>,
Jesper Dangaard Brouer <brouer@...hat.com>, Alexander Lobakin <alexandr.lobakin@...el.com>,
Magnus Karlsson <magnus.karlsson@...il.com>, Maryam Tahhan <mtahhan@...hat.com>,
xdp-hints@...-project.net, netdev@...r.kernel.org,
intel-wired-lan@...ts.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND bpf-next 07/15] ice: Support RX hash XDP hint
On 05/12, Larysa Zaremba wrote:
> RX hash XDP hint requests both hash value and type.
> Type is XDP-specific, so we need a separate way to map
> these values to the hardware ptypes, so create a lookup table.
>
> Instead of creating a new long list, reuse contents
> of ice_decode_rx_desc_ptype[] through preprocessor.
>
> Current hash type enum does not contain ICMP packet type,
> but ice devices support it, so also add a new type into core code.
>
> Then use previously refactored code and create a function
> that allows XDP code to read RX hash.
>
> Signed-off-by: Larysa Zaremba <larysa.zaremba@...el.com>
> ---
> .../net/ethernet/intel/ice/ice_lan_tx_rx.h | 412 +++++++++---------
> drivers/net/ethernet/intel/ice/ice_txrx_lib.c | 72 +++
> include/net/xdp.h | 3 +
> 3 files changed, 283 insertions(+), 204 deletions(-)
>
> diff --git a/drivers/net/ethernet/intel/ice/ice_lan_tx_rx.h b/drivers/net/ethernet/intel/ice/ice_lan_tx_rx.h
> index 89f986a75cc8..d384ddfcb83e 100644
> --- a/drivers/net/ethernet/intel/ice/ice_lan_tx_rx.h
> +++ b/drivers/net/ethernet/intel/ice/ice_lan_tx_rx.h
> @@ -673,6 +673,212 @@ struct ice_tlan_ctx {
> * Use the enum ice_rx_l2_ptype to decode the packet type
> * ENDIF
> */
> +#define ICE_PTYPES \
> + /* L2 Packet types */ \
> + ICE_PTT_UNUSED_ENTRY(0), \
> + ICE_PTT(1, L2, NONE, NOF, NONE, NONE, NOF, NONE, PAY2), \
> + ICE_PTT_UNUSED_ENTRY(2), \
> + ICE_PTT_UNUSED_ENTRY(3), \
> + ICE_PTT_UNUSED_ENTRY(4), \
> + ICE_PTT_UNUSED_ENTRY(5), \
> + ICE_PTT(6, L2, NONE, NOF, NONE, NONE, NOF, NONE, NONE), \
> + ICE_PTT(7, L2, NONE, NOF, NONE, NONE, NOF, NONE, NONE), \
> + ICE_PTT_UNUSED_ENTRY(8), \
> + ICE_PTT_UNUSED_ENTRY(9), \
> + ICE_PTT(10, L2, NONE, NOF, NONE, NONE, NOF, NONE, NONE), \
> + ICE_PTT(11, L2, NONE, NOF, NONE, NONE, NOF, NONE, NONE), \
> + ICE_PTT_UNUSED_ENTRY(12), \
> + ICE_PTT_UNUSED_ENTRY(13), \
> + ICE_PTT_UNUSED_ENTRY(14), \
> + ICE_PTT_UNUSED_ENTRY(15), \
> + ICE_PTT_UNUSED_ENTRY(16), \
> + ICE_PTT_UNUSED_ENTRY(17), \
> + ICE_PTT_UNUSED_ENTRY(18), \
> + ICE_PTT_UNUSED_ENTRY(19), \
> + ICE_PTT_UNUSED_ENTRY(20), \
> + ICE_PTT_UNUSED_ENTRY(21), \
> + \
> + /* Non Tunneled IPv4 */ \
> + ICE_PTT(22, IP, IPV4, FRG, NONE, NONE, NOF, NONE, PAY3), \
> + ICE_PTT(23, IP, IPV4, NOF, NONE, NONE, NOF, NONE, PAY3), \
> + ICE_PTT(24, IP, IPV4, NOF, NONE, NONE, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(25), \
> + ICE_PTT(26, IP, IPV4, NOF, NONE, NONE, NOF, TCP, PAY4), \
> + ICE_PTT(27, IP, IPV4, NOF, NONE, NONE, NOF, SCTP, PAY4), \
> + ICE_PTT(28, IP, IPV4, NOF, NONE, NONE, NOF, ICMP, PAY4), \
> + \
> + /* IPv4 --> IPv4 */ \
> + ICE_PTT(29, IP, IPV4, NOF, IP_IP, IPV4, FRG, NONE, PAY3), \
> + ICE_PTT(30, IP, IPV4, NOF, IP_IP, IPV4, NOF, NONE, PAY3), \
> + ICE_PTT(31, IP, IPV4, NOF, IP_IP, IPV4, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(32), \
> + ICE_PTT(33, IP, IPV4, NOF, IP_IP, IPV4, NOF, TCP, PAY4), \
> + ICE_PTT(34, IP, IPV4, NOF, IP_IP, IPV4, NOF, SCTP, PAY4), \
> + ICE_PTT(35, IP, IPV4, NOF, IP_IP, IPV4, NOF, ICMP, PAY4), \
> + \
> + /* IPv4 --> IPv6 */ \
> + ICE_PTT(36, IP, IPV4, NOF, IP_IP, IPV6, FRG, NONE, PAY3), \
> + ICE_PTT(37, IP, IPV4, NOF, IP_IP, IPV6, NOF, NONE, PAY3), \
> + ICE_PTT(38, IP, IPV4, NOF, IP_IP, IPV6, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(39), \
> + ICE_PTT(40, IP, IPV4, NOF, IP_IP, IPV6, NOF, TCP, PAY4), \
> + ICE_PTT(41, IP, IPV4, NOF, IP_IP, IPV6, NOF, SCTP, PAY4), \
> + ICE_PTT(42, IP, IPV4, NOF, IP_IP, IPV6, NOF, ICMP, PAY4), \
> + \
> + /* IPv4 --> GRE/NAT */ \
> + ICE_PTT(43, IP, IPV4, NOF, IP_GRENAT, NONE, NOF, NONE, PAY3), \
> + \
> + /* IPv4 --> GRE/NAT --> IPv4 */ \
> + ICE_PTT(44, IP, IPV4, NOF, IP_GRENAT, IPV4, FRG, NONE, PAY3), \
> + ICE_PTT(45, IP, IPV4, NOF, IP_GRENAT, IPV4, NOF, NONE, PAY3), \
> + ICE_PTT(46, IP, IPV4, NOF, IP_GRENAT, IPV4, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(47), \
> + ICE_PTT(48, IP, IPV4, NOF, IP_GRENAT, IPV4, NOF, TCP, PAY4), \
> + ICE_PTT(49, IP, IPV4, NOF, IP_GRENAT, IPV4, NOF, SCTP, PAY4), \
> + ICE_PTT(50, IP, IPV4, NOF, IP_GRENAT, IPV4, NOF, ICMP, PAY4), \
> + \
> + /* IPv4 --> GRE/NAT --> IPv6 */ \
> + ICE_PTT(51, IP, IPV4, NOF, IP_GRENAT, IPV6, FRG, NONE, PAY3), \
> + ICE_PTT(52, IP, IPV4, NOF, IP_GRENAT, IPV6, NOF, NONE, PAY3), \
> + ICE_PTT(53, IP, IPV4, NOF, IP_GRENAT, IPV6, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(54), \
> + ICE_PTT(55, IP, IPV4, NOF, IP_GRENAT, IPV6, NOF, TCP, PAY4), \
> + ICE_PTT(56, IP, IPV4, NOF, IP_GRENAT, IPV6, NOF, SCTP, PAY4), \
> + ICE_PTT(57, IP, IPV4, NOF, IP_GRENAT, IPV6, NOF, ICMP, PAY4), \
> + \
> + /* IPv4 --> GRE/NAT --> MAC */ \
> + ICE_PTT(58, IP, IPV4, NOF, IP_GRENAT_MAC, NONE, NOF, NONE, PAY3), \
> + \
> + /* IPv4 --> GRE/NAT --> MAC --> IPv4 */ \
> + ICE_PTT(59, IP, IPV4, NOF, IP_GRENAT_MAC, IPV4, FRG, NONE, PAY3), \
> + ICE_PTT(60, IP, IPV4, NOF, IP_GRENAT_MAC, IPV4, NOF, NONE, PAY3), \
> + ICE_PTT(61, IP, IPV4, NOF, IP_GRENAT_MAC, IPV4, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(62), \
> + ICE_PTT(63, IP, IPV4, NOF, IP_GRENAT_MAC, IPV4, NOF, TCP, PAY4), \
> + ICE_PTT(64, IP, IPV4, NOF, IP_GRENAT_MAC, IPV4, NOF, SCTP, PAY4), \
> + ICE_PTT(65, IP, IPV4, NOF, IP_GRENAT_MAC, IPV4, NOF, ICMP, PAY4), \
> + \
> + /* IPv4 --> GRE/NAT -> MAC --> IPv6 */ \
> + ICE_PTT(66, IP, IPV4, NOF, IP_GRENAT_MAC, IPV6, FRG, NONE, PAY3), \
> + ICE_PTT(67, IP, IPV4, NOF, IP_GRENAT_MAC, IPV6, NOF, NONE, PAY3), \
> + ICE_PTT(68, IP, IPV4, NOF, IP_GRENAT_MAC, IPV6, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(69), \
> + ICE_PTT(70, IP, IPV4, NOF, IP_GRENAT_MAC, IPV6, NOF, TCP, PAY4), \
> + ICE_PTT(71, IP, IPV4, NOF, IP_GRENAT_MAC, IPV6, NOF, SCTP, PAY4), \
> + ICE_PTT(72, IP, IPV4, NOF, IP_GRENAT_MAC, IPV6, NOF, ICMP, PAY4), \
> + \
> + /* IPv4 --> GRE/NAT --> MAC/VLAN */ \
> + ICE_PTT(73, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, NONE, NOF, NONE, PAY3), \
> + \
> + /* IPv4 ---> GRE/NAT -> MAC/VLAN --> IPv4 */ \
> + ICE_PTT(74, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV4, FRG, NONE, PAY3), \
> + ICE_PTT(75, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, NONE, PAY3), \
> + ICE_PTT(76, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(77), \
> + ICE_PTT(78, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, TCP, PAY4), \
> + ICE_PTT(79, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, SCTP, PAY4), \
> + ICE_PTT(80, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, ICMP, PAY4), \
> + \
> + /* IPv4 -> GRE/NAT -> MAC/VLAN --> IPv6 */ \
> + ICE_PTT(81, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV6, FRG, NONE, PAY3), \
> + ICE_PTT(82, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, NONE, PAY3), \
> + ICE_PTT(83, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(84), \
> + ICE_PTT(85, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, TCP, PAY4), \
> + ICE_PTT(86, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, SCTP, PAY4), \
> + ICE_PTT(87, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, ICMP, PAY4), \
> + \
> + /* Non Tunneled IPv6 */ \
> + ICE_PTT(88, IP, IPV6, FRG, NONE, NONE, NOF, NONE, PAY3), \
> + ICE_PTT(89, IP, IPV6, NOF, NONE, NONE, NOF, NONE, PAY3), \
> + ICE_PTT(90, IP, IPV6, NOF, NONE, NONE, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(91), \
> + ICE_PTT(92, IP, IPV6, NOF, NONE, NONE, NOF, TCP, PAY4), \
> + ICE_PTT(93, IP, IPV6, NOF, NONE, NONE, NOF, SCTP, PAY4), \
> + ICE_PTT(94, IP, IPV6, NOF, NONE, NONE, NOF, ICMP, PAY4), \
> + \
> + /* IPv6 --> IPv4 */ \
> + ICE_PTT(95, IP, IPV6, NOF, IP_IP, IPV4, FRG, NONE, PAY3), \
> + ICE_PTT(96, IP, IPV6, NOF, IP_IP, IPV4, NOF, NONE, PAY3), \
> + ICE_PTT(97, IP, IPV6, NOF, IP_IP, IPV4, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(98), \
> + ICE_PTT(99, IP, IPV6, NOF, IP_IP, IPV4, NOF, TCP, PAY4), \
> + ICE_PTT(100, IP, IPV6, NOF, IP_IP, IPV4, NOF, SCTP, PAY4), \
> + ICE_PTT(101, IP, IPV6, NOF, IP_IP, IPV4, NOF, ICMP, PAY4), \
> + \
> + /* IPv6 --> IPv6 */ \
> + ICE_PTT(102, IP, IPV6, NOF, IP_IP, IPV6, FRG, NONE, PAY3), \
> + ICE_PTT(103, IP, IPV6, NOF, IP_IP, IPV6, NOF, NONE, PAY3), \
> + ICE_PTT(104, IP, IPV6, NOF, IP_IP, IPV6, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(105), \
> + ICE_PTT(106, IP, IPV6, NOF, IP_IP, IPV6, NOF, TCP, PAY4), \
> + ICE_PTT(107, IP, IPV6, NOF, IP_IP, IPV6, NOF, SCTP, PAY4), \
> + ICE_PTT(108, IP, IPV6, NOF, IP_IP, IPV6, NOF, ICMP, PAY4), \
> + \
> + /* IPv6 --> GRE/NAT */ \
> + ICE_PTT(109, IP, IPV6, NOF, IP_GRENAT, NONE, NOF, NONE, PAY3), \
> + \
> + /* IPv6 --> GRE/NAT -> IPv4 */ \
> + ICE_PTT(110, IP, IPV6, NOF, IP_GRENAT, IPV4, FRG, NONE, PAY3), \
> + ICE_PTT(111, IP, IPV6, NOF, IP_GRENAT, IPV4, NOF, NONE, PAY3), \
> + ICE_PTT(112, IP, IPV6, NOF, IP_GRENAT, IPV4, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(113), \
> + ICE_PTT(114, IP, IPV6, NOF, IP_GRENAT, IPV4, NOF, TCP, PAY4), \
> + ICE_PTT(115, IP, IPV6, NOF, IP_GRENAT, IPV4, NOF, SCTP, PAY4), \
> + ICE_PTT(116, IP, IPV6, NOF, IP_GRENAT, IPV4, NOF, ICMP, PAY4), \
> + \
> + /* IPv6 --> GRE/NAT -> IPv6 */ \
> + ICE_PTT(117, IP, IPV6, NOF, IP_GRENAT, IPV6, FRG, NONE, PAY3), \
> + ICE_PTT(118, IP, IPV6, NOF, IP_GRENAT, IPV6, NOF, NONE, PAY3), \
> + ICE_PTT(119, IP, IPV6, NOF, IP_GRENAT, IPV6, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(120), \
> + ICE_PTT(121, IP, IPV6, NOF, IP_GRENAT, IPV6, NOF, TCP, PAY4), \
> + ICE_PTT(122, IP, IPV6, NOF, IP_GRENAT, IPV6, NOF, SCTP, PAY4), \
> + ICE_PTT(123, IP, IPV6, NOF, IP_GRENAT, IPV6, NOF, ICMP, PAY4), \
> + \
> + /* IPv6 --> GRE/NAT -> MAC */ \
> + ICE_PTT(124, IP, IPV6, NOF, IP_GRENAT_MAC, NONE, NOF, NONE, PAY3), \
> + \
> + /* IPv6 --> GRE/NAT -> MAC -> IPv4 */ \
> + ICE_PTT(125, IP, IPV6, NOF, IP_GRENAT_MAC, IPV4, FRG, NONE, PAY3), \
> + ICE_PTT(126, IP, IPV6, NOF, IP_GRENAT_MAC, IPV4, NOF, NONE, PAY3), \
> + ICE_PTT(127, IP, IPV6, NOF, IP_GRENAT_MAC, IPV4, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(128), \
> + ICE_PTT(129, IP, IPV6, NOF, IP_GRENAT_MAC, IPV4, NOF, TCP, PAY4), \
> + ICE_PTT(130, IP, IPV6, NOF, IP_GRENAT_MAC, IPV4, NOF, SCTP, PAY4), \
> + ICE_PTT(131, IP, IPV6, NOF, IP_GRENAT_MAC, IPV4, NOF, ICMP, PAY4), \
> + \
> + /* IPv6 --> GRE/NAT -> MAC -> IPv6 */ \
> + ICE_PTT(132, IP, IPV6, NOF, IP_GRENAT_MAC, IPV6, FRG, NONE, PAY3), \
> + ICE_PTT(133, IP, IPV6, NOF, IP_GRENAT_MAC, IPV6, NOF, NONE, PAY3), \
> + ICE_PTT(134, IP, IPV6, NOF, IP_GRENAT_MAC, IPV6, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(135), \
> + ICE_PTT(136, IP, IPV6, NOF, IP_GRENAT_MAC, IPV6, NOF, TCP, PAY4), \
> + ICE_PTT(137, IP, IPV6, NOF, IP_GRENAT_MAC, IPV6, NOF, SCTP, PAY4), \
> + ICE_PTT(138, IP, IPV6, NOF, IP_GRENAT_MAC, IPV6, NOF, ICMP, PAY4), \
> + \
> + /* IPv6 --> GRE/NAT -> MAC/VLAN */ \
> + ICE_PTT(139, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, NONE, NOF, NONE, PAY3), \
> + \
> + /* IPv6 --> GRE/NAT -> MAC/VLAN --> IPv4 */ \
> + ICE_PTT(140, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV4, FRG, NONE, PAY3), \
> + ICE_PTT(141, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, NONE, PAY3), \
> + ICE_PTT(142, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(143), \
> + ICE_PTT(144, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, TCP, PAY4), \
> + ICE_PTT(145, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, SCTP, PAY4), \
> + ICE_PTT(146, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, ICMP, PAY4), \
> + \
> + /* IPv6 --> GRE/NAT -> MAC/VLAN --> IPv6 */ \
> + ICE_PTT(147, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV6, FRG, NONE, PAY3), \
> + ICE_PTT(148, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, NONE, PAY3), \
> + ICE_PTT(149, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, UDP, PAY4), \
> + ICE_PTT_UNUSED_ENTRY(150), \
> + ICE_PTT(151, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, TCP, PAY4), \
> + ICE_PTT(152, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, SCTP, PAY4), \
> + ICE_PTT(153, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, ICMP, PAY4),
> +
> +#define ICE_NUM_DEFINED_PTYPES 154
>
> /* macro to make the table lines short, use explicit indexing with [PTYPE] */
> #define ICE_PTT(PTYPE, OUTER_IP, OUTER_IP_VER, OUTER_FRAG, T, TE, TEF, I, PL)\
> @@ -695,212 +901,10 @@ struct ice_tlan_ctx {
>
> /* Lookup table mapping in the 10-bit HW PTYPE to the bit field for decoding */
> static const struct ice_rx_ptype_decoded ice_ptype_lkup[BIT(10)] = {
> - /* L2 Packet types */
> - ICE_PTT_UNUSED_ENTRY(0),
> - ICE_PTT(1, L2, NONE, NOF, NONE, NONE, NOF, NONE, PAY2),
> - ICE_PTT_UNUSED_ENTRY(2),
> - ICE_PTT_UNUSED_ENTRY(3),
> - ICE_PTT_UNUSED_ENTRY(4),
> - ICE_PTT_UNUSED_ENTRY(5),
> - ICE_PTT(6, L2, NONE, NOF, NONE, NONE, NOF, NONE, NONE),
> - ICE_PTT(7, L2, NONE, NOF, NONE, NONE, NOF, NONE, NONE),
> - ICE_PTT_UNUSED_ENTRY(8),
> - ICE_PTT_UNUSED_ENTRY(9),
> - ICE_PTT(10, L2, NONE, NOF, NONE, NONE, NOF, NONE, NONE),
> - ICE_PTT(11, L2, NONE, NOF, NONE, NONE, NOF, NONE, NONE),
> - ICE_PTT_UNUSED_ENTRY(12),
> - ICE_PTT_UNUSED_ENTRY(13),
> - ICE_PTT_UNUSED_ENTRY(14),
> - ICE_PTT_UNUSED_ENTRY(15),
> - ICE_PTT_UNUSED_ENTRY(16),
> - ICE_PTT_UNUSED_ENTRY(17),
> - ICE_PTT_UNUSED_ENTRY(18),
> - ICE_PTT_UNUSED_ENTRY(19),
> - ICE_PTT_UNUSED_ENTRY(20),
> - ICE_PTT_UNUSED_ENTRY(21),
> -
> - /* Non Tunneled IPv4 */
> - ICE_PTT(22, IP, IPV4, FRG, NONE, NONE, NOF, NONE, PAY3),
> - ICE_PTT(23, IP, IPV4, NOF, NONE, NONE, NOF, NONE, PAY3),
> - ICE_PTT(24, IP, IPV4, NOF, NONE, NONE, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(25),
> - ICE_PTT(26, IP, IPV4, NOF, NONE, NONE, NOF, TCP, PAY4),
> - ICE_PTT(27, IP, IPV4, NOF, NONE, NONE, NOF, SCTP, PAY4),
> - ICE_PTT(28, IP, IPV4, NOF, NONE, NONE, NOF, ICMP, PAY4),
> -
> - /* IPv4 --> IPv4 */
> - ICE_PTT(29, IP, IPV4, NOF, IP_IP, IPV4, FRG, NONE, PAY3),
> - ICE_PTT(30, IP, IPV4, NOF, IP_IP, IPV4, NOF, NONE, PAY3),
> - ICE_PTT(31, IP, IPV4, NOF, IP_IP, IPV4, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(32),
> - ICE_PTT(33, IP, IPV4, NOF, IP_IP, IPV4, NOF, TCP, PAY4),
> - ICE_PTT(34, IP, IPV4, NOF, IP_IP, IPV4, NOF, SCTP, PAY4),
> - ICE_PTT(35, IP, IPV4, NOF, IP_IP, IPV4, NOF, ICMP, PAY4),
> -
> - /* IPv4 --> IPv6 */
> - ICE_PTT(36, IP, IPV4, NOF, IP_IP, IPV6, FRG, NONE, PAY3),
> - ICE_PTT(37, IP, IPV4, NOF, IP_IP, IPV6, NOF, NONE, PAY3),
> - ICE_PTT(38, IP, IPV4, NOF, IP_IP, IPV6, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(39),
> - ICE_PTT(40, IP, IPV4, NOF, IP_IP, IPV6, NOF, TCP, PAY4),
> - ICE_PTT(41, IP, IPV4, NOF, IP_IP, IPV6, NOF, SCTP, PAY4),
> - ICE_PTT(42, IP, IPV4, NOF, IP_IP, IPV6, NOF, ICMP, PAY4),
> -
> - /* IPv4 --> GRE/NAT */
> - ICE_PTT(43, IP, IPV4, NOF, IP_GRENAT, NONE, NOF, NONE, PAY3),
> -
> - /* IPv4 --> GRE/NAT --> IPv4 */
> - ICE_PTT(44, IP, IPV4, NOF, IP_GRENAT, IPV4, FRG, NONE, PAY3),
> - ICE_PTT(45, IP, IPV4, NOF, IP_GRENAT, IPV4, NOF, NONE, PAY3),
> - ICE_PTT(46, IP, IPV4, NOF, IP_GRENAT, IPV4, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(47),
> - ICE_PTT(48, IP, IPV4, NOF, IP_GRENAT, IPV4, NOF, TCP, PAY4),
> - ICE_PTT(49, IP, IPV4, NOF, IP_GRENAT, IPV4, NOF, SCTP, PAY4),
> - ICE_PTT(50, IP, IPV4, NOF, IP_GRENAT, IPV4, NOF, ICMP, PAY4),
> -
> - /* IPv4 --> GRE/NAT --> IPv6 */
> - ICE_PTT(51, IP, IPV4, NOF, IP_GRENAT, IPV6, FRG, NONE, PAY3),
> - ICE_PTT(52, IP, IPV4, NOF, IP_GRENAT, IPV6, NOF, NONE, PAY3),
> - ICE_PTT(53, IP, IPV4, NOF, IP_GRENAT, IPV6, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(54),
> - ICE_PTT(55, IP, IPV4, NOF, IP_GRENAT, IPV6, NOF, TCP, PAY4),
> - ICE_PTT(56, IP, IPV4, NOF, IP_GRENAT, IPV6, NOF, SCTP, PAY4),
> - ICE_PTT(57, IP, IPV4, NOF, IP_GRENAT, IPV6, NOF, ICMP, PAY4),
> -
> - /* IPv4 --> GRE/NAT --> MAC */
> - ICE_PTT(58, IP, IPV4, NOF, IP_GRENAT_MAC, NONE, NOF, NONE, PAY3),
> -
> - /* IPv4 --> GRE/NAT --> MAC --> IPv4 */
> - ICE_PTT(59, IP, IPV4, NOF, IP_GRENAT_MAC, IPV4, FRG, NONE, PAY3),
> - ICE_PTT(60, IP, IPV4, NOF, IP_GRENAT_MAC, IPV4, NOF, NONE, PAY3),
> - ICE_PTT(61, IP, IPV4, NOF, IP_GRENAT_MAC, IPV4, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(62),
> - ICE_PTT(63, IP, IPV4, NOF, IP_GRENAT_MAC, IPV4, NOF, TCP, PAY4),
> - ICE_PTT(64, IP, IPV4, NOF, IP_GRENAT_MAC, IPV4, NOF, SCTP, PAY4),
> - ICE_PTT(65, IP, IPV4, NOF, IP_GRENAT_MAC, IPV4, NOF, ICMP, PAY4),
> -
> - /* IPv4 --> GRE/NAT -> MAC --> IPv6 */
> - ICE_PTT(66, IP, IPV4, NOF, IP_GRENAT_MAC, IPV6, FRG, NONE, PAY3),
> - ICE_PTT(67, IP, IPV4, NOF, IP_GRENAT_MAC, IPV6, NOF, NONE, PAY3),
> - ICE_PTT(68, IP, IPV4, NOF, IP_GRENAT_MAC, IPV6, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(69),
> - ICE_PTT(70, IP, IPV4, NOF, IP_GRENAT_MAC, IPV6, NOF, TCP, PAY4),
> - ICE_PTT(71, IP, IPV4, NOF, IP_GRENAT_MAC, IPV6, NOF, SCTP, PAY4),
> - ICE_PTT(72, IP, IPV4, NOF, IP_GRENAT_MAC, IPV6, NOF, ICMP, PAY4),
> -
> - /* IPv4 --> GRE/NAT --> MAC/VLAN */
> - ICE_PTT(73, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, NONE, NOF, NONE, PAY3),
> -
> - /* IPv4 ---> GRE/NAT -> MAC/VLAN --> IPv4 */
> - ICE_PTT(74, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV4, FRG, NONE, PAY3),
> - ICE_PTT(75, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, NONE, PAY3),
> - ICE_PTT(76, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(77),
> - ICE_PTT(78, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, TCP, PAY4),
> - ICE_PTT(79, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, SCTP, PAY4),
> - ICE_PTT(80, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, ICMP, PAY4),
> -
> - /* IPv4 -> GRE/NAT -> MAC/VLAN --> IPv6 */
> - ICE_PTT(81, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV6, FRG, NONE, PAY3),
> - ICE_PTT(82, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, NONE, PAY3),
> - ICE_PTT(83, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(84),
> - ICE_PTT(85, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, TCP, PAY4),
> - ICE_PTT(86, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, SCTP, PAY4),
> - ICE_PTT(87, IP, IPV4, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, ICMP, PAY4),
> -
> - /* Non Tunneled IPv6 */
> - ICE_PTT(88, IP, IPV6, FRG, NONE, NONE, NOF, NONE, PAY3),
> - ICE_PTT(89, IP, IPV6, NOF, NONE, NONE, NOF, NONE, PAY3),
> - ICE_PTT(90, IP, IPV6, NOF, NONE, NONE, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(91),
> - ICE_PTT(92, IP, IPV6, NOF, NONE, NONE, NOF, TCP, PAY4),
> - ICE_PTT(93, IP, IPV6, NOF, NONE, NONE, NOF, SCTP, PAY4),
> - ICE_PTT(94, IP, IPV6, NOF, NONE, NONE, NOF, ICMP, PAY4),
> -
> - /* IPv6 --> IPv4 */
> - ICE_PTT(95, IP, IPV6, NOF, IP_IP, IPV4, FRG, NONE, PAY3),
> - ICE_PTT(96, IP, IPV6, NOF, IP_IP, IPV4, NOF, NONE, PAY3),
> - ICE_PTT(97, IP, IPV6, NOF, IP_IP, IPV4, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(98),
> - ICE_PTT(99, IP, IPV6, NOF, IP_IP, IPV4, NOF, TCP, PAY4),
> - ICE_PTT(100, IP, IPV6, NOF, IP_IP, IPV4, NOF, SCTP, PAY4),
> - ICE_PTT(101, IP, IPV6, NOF, IP_IP, IPV4, NOF, ICMP, PAY4),
> -
> - /* IPv6 --> IPv6 */
> - ICE_PTT(102, IP, IPV6, NOF, IP_IP, IPV6, FRG, NONE, PAY3),
> - ICE_PTT(103, IP, IPV6, NOF, IP_IP, IPV6, NOF, NONE, PAY3),
> - ICE_PTT(104, IP, IPV6, NOF, IP_IP, IPV6, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(105),
> - ICE_PTT(106, IP, IPV6, NOF, IP_IP, IPV6, NOF, TCP, PAY4),
> - ICE_PTT(107, IP, IPV6, NOF, IP_IP, IPV6, NOF, SCTP, PAY4),
> - ICE_PTT(108, IP, IPV6, NOF, IP_IP, IPV6, NOF, ICMP, PAY4),
> -
> - /* IPv6 --> GRE/NAT */
> - ICE_PTT(109, IP, IPV6, NOF, IP_GRENAT, NONE, NOF, NONE, PAY3),
> -
> - /* IPv6 --> GRE/NAT -> IPv4 */
> - ICE_PTT(110, IP, IPV6, NOF, IP_GRENAT, IPV4, FRG, NONE, PAY3),
> - ICE_PTT(111, IP, IPV6, NOF, IP_GRENAT, IPV4, NOF, NONE, PAY3),
> - ICE_PTT(112, IP, IPV6, NOF, IP_GRENAT, IPV4, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(113),
> - ICE_PTT(114, IP, IPV6, NOF, IP_GRENAT, IPV4, NOF, TCP, PAY4),
> - ICE_PTT(115, IP, IPV6, NOF, IP_GRENAT, IPV4, NOF, SCTP, PAY4),
> - ICE_PTT(116, IP, IPV6, NOF, IP_GRENAT, IPV4, NOF, ICMP, PAY4),
> -
> - /* IPv6 --> GRE/NAT -> IPv6 */
> - ICE_PTT(117, IP, IPV6, NOF, IP_GRENAT, IPV6, FRG, NONE, PAY3),
> - ICE_PTT(118, IP, IPV6, NOF, IP_GRENAT, IPV6, NOF, NONE, PAY3),
> - ICE_PTT(119, IP, IPV6, NOF, IP_GRENAT, IPV6, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(120),
> - ICE_PTT(121, IP, IPV6, NOF, IP_GRENAT, IPV6, NOF, TCP, PAY4),
> - ICE_PTT(122, IP, IPV6, NOF, IP_GRENAT, IPV6, NOF, SCTP, PAY4),
> - ICE_PTT(123, IP, IPV6, NOF, IP_GRENAT, IPV6, NOF, ICMP, PAY4),
> -
> - /* IPv6 --> GRE/NAT -> MAC */
> - ICE_PTT(124, IP, IPV6, NOF, IP_GRENAT_MAC, NONE, NOF, NONE, PAY3),
> -
> - /* IPv6 --> GRE/NAT -> MAC -> IPv4 */
> - ICE_PTT(125, IP, IPV6, NOF, IP_GRENAT_MAC, IPV4, FRG, NONE, PAY3),
> - ICE_PTT(126, IP, IPV6, NOF, IP_GRENAT_MAC, IPV4, NOF, NONE, PAY3),
> - ICE_PTT(127, IP, IPV6, NOF, IP_GRENAT_MAC, IPV4, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(128),
> - ICE_PTT(129, IP, IPV6, NOF, IP_GRENAT_MAC, IPV4, NOF, TCP, PAY4),
> - ICE_PTT(130, IP, IPV6, NOF, IP_GRENAT_MAC, IPV4, NOF, SCTP, PAY4),
> - ICE_PTT(131, IP, IPV6, NOF, IP_GRENAT_MAC, IPV4, NOF, ICMP, PAY4),
> -
> - /* IPv6 --> GRE/NAT -> MAC -> IPv6 */
> - ICE_PTT(132, IP, IPV6, NOF, IP_GRENAT_MAC, IPV6, FRG, NONE, PAY3),
> - ICE_PTT(133, IP, IPV6, NOF, IP_GRENAT_MAC, IPV6, NOF, NONE, PAY3),
> - ICE_PTT(134, IP, IPV6, NOF, IP_GRENAT_MAC, IPV6, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(135),
> - ICE_PTT(136, IP, IPV6, NOF, IP_GRENAT_MAC, IPV6, NOF, TCP, PAY4),
> - ICE_PTT(137, IP, IPV6, NOF, IP_GRENAT_MAC, IPV6, NOF, SCTP, PAY4),
> - ICE_PTT(138, IP, IPV6, NOF, IP_GRENAT_MAC, IPV6, NOF, ICMP, PAY4),
> -
> - /* IPv6 --> GRE/NAT -> MAC/VLAN */
> - ICE_PTT(139, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, NONE, NOF, NONE, PAY3),
> -
> - /* IPv6 --> GRE/NAT -> MAC/VLAN --> IPv4 */
> - ICE_PTT(140, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV4, FRG, NONE, PAY3),
> - ICE_PTT(141, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, NONE, PAY3),
> - ICE_PTT(142, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(143),
> - ICE_PTT(144, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, TCP, PAY4),
> - ICE_PTT(145, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, SCTP, PAY4),
> - ICE_PTT(146, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV4, NOF, ICMP, PAY4),
> -
> - /* IPv6 --> GRE/NAT -> MAC/VLAN --> IPv6 */
> - ICE_PTT(147, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV6, FRG, NONE, PAY3),
> - ICE_PTT(148, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, NONE, PAY3),
> - ICE_PTT(149, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, UDP, PAY4),
> - ICE_PTT_UNUSED_ENTRY(150),
> - ICE_PTT(151, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, TCP, PAY4),
> - ICE_PTT(152, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, SCTP, PAY4),
> - ICE_PTT(153, IP, IPV6, NOF, IP_GRENAT_MAC_VLAN, IPV6, NOF, ICMP, PAY4),
> + ICE_PTYPES
>
> /* unused entries */
> - [154 ... 1023] = { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
> + [ICE_NUM_DEFINED_PTYPES ... 1023] = { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
> };
>
> static inline struct ice_rx_ptype_decoded ice_decode_rx_desc_ptype(u16 ptype)
> diff --git a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
> index e9589cadf811..1caa73644e7b 100644
> --- a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
> +++ b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
> @@ -556,6 +556,78 @@ static int ice_xdp_rx_hw_ts(const struct xdp_md *ctx, u64 *ts_ns)
> return 0;
> }
>
> +/* Define a ptype index -> XDP hash type lookup table.
> + * It uses the same ptype definitions as ice_decode_rx_desc_ptype[],
> + * avoiding possible copy-paste errors.
> + */
> +#undef ICE_PTT
> +#undef ICE_PTT_UNUSED_ENTRY
> +
> +#define ICE_PTT(PTYPE, OUTER_IP, OUTER_IP_VER, OUTER_FRAG, T, TE, TEF, I, PL)\
> + [PTYPE] = XDP_RSS_L3_##OUTER_IP_VER | XDP_RSS_L4_##I | XDP_RSS_TYPE_##PL
> +
> +#define ICE_PTT_UNUSED_ENTRY(PTYPE) [PTYPE] = 0
> +
> +/* A few supplementary definitions for when XDP hash types do not coincide
> + * with what can be generated from ptype definitions
> + * by means of preprocessor concatenation.
> + */
> +#define XDP_RSS_L3_NONE XDP_RSS_TYPE_NONE
> +#define XDP_RSS_L4_NONE XDP_RSS_TYPE_NONE
> +#define XDP_RSS_TYPE_PAY2 XDP_RSS_TYPE_L2
> +#define XDP_RSS_TYPE_PAY3 XDP_RSS_TYPE_NONE
> +#define XDP_RSS_TYPE_PAY4 XDP_RSS_L4
> +
> +static const enum xdp_rss_hash_type
> +ice_ptype_to_xdp_hash[ICE_NUM_DEFINED_PTYPES] = {
> + ICE_PTYPES
> +};
> +
> +#undef XDP_RSS_L3_NONE
> +#undef XDP_RSS_L4_NONE
> +#undef XDP_RSS_TYPE_PAY2
> +#undef XDP_RSS_TYPE_PAY3
> +#undef XDP_RSS_TYPE_PAY4
> +
> +#undef ICE_PTT
> +#undef ICE_PTT_UNUSED_ENTRY
> +
> +/**
> + * ice_xdp_rx_hash_type - Get XDP-specific hash type from the RX descriptor
> + * @eop_desc: End of Packet descriptor
> + */
> +static enum xdp_rss_hash_type
> +ice_xdp_rx_hash_type(union ice_32b_rx_flex_desc *eop_desc)
> +{
> + u16 ptype = ice_get_ptype(eop_desc);
> +
> + if (unlikely(ptype >= ICE_NUM_DEFINED_PTYPES))
> + return 0;
> +
> + return ice_ptype_to_xdp_hash[ptype];
> +}
> +
> +/**
> + * ice_xdp_rx_hash - RX hash XDP hint handler
> + * @ctx: XDP buff pointer
> + * @hash: hash destination address
> + * @rss_type: XDP hash type destination address
> + *
> + * Copy RX hash (if available) and its type to the destination address.
> + */
> +static int ice_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash,
> + enum xdp_rss_hash_type *rss_type)
> +{
> + const struct ice_xdp_buff *xdp_ext = (void *)ctx;
> +
> + *rss_type = ice_xdp_rx_hash_type(xdp_ext->eop_desc);
> + if (!ice_copy_rx_hash_from_desc(xdp_ext->eop_desc, hash))
> + return -EOPNOTSUPP;
Same here? See the following for the context:
https://lore.kernel.org/bpf/167940675120.2718408.8176058626864184420.stgit@firesoul/
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