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From: Jesper Dangaard Brouer <brouer@redhat.com>
To: bpf@vger.kernel.org
Cc: Jesper Dangaard Brouer <brouer@redhat.com>,
	netdev@vger.kernel.org, xdp-hints@xdp-project.net,
	larysa.zaremba@intel.com, memxor@gmail.com,
	Lorenzo Bianconi <lorenzo@kernel.org>,
	mtahhan@redhat.com,
	Alexei Starovoitov <alexei.starovoitov@gmail.com>,
	Daniel Borkmann <borkmann@iogearbox.net>,
	Andrii Nakryiko <andrii.nakryiko@gmail.com>,
	dave@dtucker.co.uk, Magnus Karlsson <magnus.karlsson@intel.com>,
	bjorn@kernel.org
Subject: [xdp-hints] [PATCH RFCv2 bpf-next 08/18] i40e: refactor i40e_rx_checksum with helper
Date: Wed, 07 Sep 2022 17:45:41 +0200	[thread overview]
Message-ID: <166256554106.1434226.11099369196515014657.stgit@firesoul> (raw)
In-Reply-To: <166256538687.1434226.15760041133601409770.stgit@firesoul>

No functional change, this is in preparation for later patches.

The helper function does not depend on skb, which will be used in later
patches.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
---
 drivers/net/ethernet/intel/i40e/i40e_txrx.c |   66 ++++++++++++++++-----------
 1 file changed, 40 insertions(+), 26 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index f6ba97a0166e..a7a896321880 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -1751,45 +1751,38 @@ bool i40e_alloc_rx_buffers(struct i40e_ring *rx_ring, u16 cleaned_count)
 	return true;
 }
 
-/**
- * i40e_rx_checksum - Indicate in skb if hw indicated a good cksum
- * @vsi: the VSI we care about
- * @skb: skb currently being received and modified
- * @rx_desc: the receive descriptor
- **/
-static inline void i40e_rx_checksum(struct i40e_vsi *vsi,
-				    struct sk_buff *skb,
-				    union i40e_rx_desc *rx_desc)
+struct i40e_rx_checksum_ret {
+	u16 ip_summed;
+	u16 csum_level;
+};
+
+static inline struct i40e_rx_checksum_ret
+_i40e_rx_checksum(struct i40e_vsi *vsi,
+		  u64 qword,
+		  struct i40e_rx_ptype_decoded decoded)
 {
-	struct i40e_rx_ptype_decoded decoded;
+	struct i40e_rx_checksum_ret ret = {};
 	u32 rx_error, rx_status;
 	bool ipv4, ipv6;
-	u8 ptype;
-	u64 qword;
 
-	qword = le64_to_cpu(rx_desc->wb.qword1.status_error_len);
-	ptype = (qword & I40E_RXD_QW1_PTYPE_MASK) >> I40E_RXD_QW1_PTYPE_SHIFT;
 	rx_error = (qword & I40E_RXD_QW1_ERROR_MASK) >>
 		   I40E_RXD_QW1_ERROR_SHIFT;
 	rx_status = (qword & I40E_RXD_QW1_STATUS_MASK) >>
 		    I40E_RXD_QW1_STATUS_SHIFT;
-	decoded = decode_rx_desc_ptype(ptype);
 
-	skb->ip_summed = CHECKSUM_NONE;
-
-	skb_checksum_none_assert(skb);
+	ret.ip_summed = CHECKSUM_NONE;
 
 	/* Rx csum enabled and ip headers found? */
 	if (!(vsi->netdev->features & NETIF_F_RXCSUM))
-		return;
+		return ret;
 
 	/* did the hardware decode the packet and checksum? */
 	if (!(rx_status & BIT(I40E_RX_DESC_STATUS_L3L4P_SHIFT)))
-		return;
+		return ret;
 
 	/* both known and outer_ip must be set for the below code to work */
 	if (!(decoded.known && decoded.outer_ip))
-		return;
+		return ret;
 
 	ipv4 = (decoded.outer_ip == I40E_RX_PTYPE_OUTER_IP) &&
 	       (decoded.outer_ip_ver == I40E_RX_PTYPE_OUTER_IPV4);
@@ -1805,7 +1798,7 @@ static inline void i40e_rx_checksum(struct i40e_vsi *vsi,
 	if (ipv6 &&
 	    rx_status & BIT(I40E_RX_DESC_STATUS_IPV6EXADD_SHIFT))
 		/* don't increment checksum err here, non-fatal err */
-		return;
+		return ret;
 
 	/* there was some L4 error, count error and punt packet to the stack */
 	if (rx_error & BIT(I40E_RX_DESC_ERROR_L4E_SHIFT))
@@ -1816,30 +1809,51 @@ static inline void i40e_rx_checksum(struct i40e_vsi *vsi,
 	 * the csum.
 	 */
 	if (rx_error & BIT(I40E_RX_DESC_ERROR_PPRS_SHIFT))
-		return;
+		return ret;
 
 	/* If there is an outer header present that might contain a checksum
 	 * we need to bump the checksum level by 1 to reflect the fact that
 	 * we are indicating we validated the inner checksum.
 	 */
 	if (decoded.tunnel_type >= I40E_RX_PTYPE_TUNNEL_IP_GRENAT)
-		skb->csum_level = 1;
+		ret.csum_level = 1;
 
 	/* Only report checksum unnecessary for TCP, UDP, or SCTP */
 	switch (decoded.inner_prot) {
 	case I40E_RX_PTYPE_INNER_PROT_TCP:
 	case I40E_RX_PTYPE_INNER_PROT_UDP:
 	case I40E_RX_PTYPE_INNER_PROT_SCTP:
-		skb->ip_summed = CHECKSUM_UNNECESSARY;
+		ret.ip_summed = CHECKSUM_UNNECESSARY;
 		fallthrough;
 	default:
 		break;
 	}
 
-	return;
+	return ret;
 
 checksum_fail:
 	vsi->back->hw_csum_rx_error++;
+	return ret;
+}
+
+/**
+ * i40e_rx_checksum - Indicate in skb if hw indicated a good cksum
+ * @vsi: the VSI we care about
+ * @skb: skb currently being received and modified
+ * @rx_desc: the receive descriptor
+ **/
+static inline void i40e_rx_checksum(struct i40e_vsi *vsi,
+				    struct sk_buff *skb,
+				    union i40e_rx_desc *rx_desc)
+{
+	struct i40e_rx_checksum_ret ret;
+	u64 qword = le64_to_cpu(rx_desc->wb.qword1.status_error_len);
+	u8 ptype = (qword & I40E_RXD_QW1_PTYPE_MASK) >> I40E_RXD_QW1_PTYPE_SHIFT;
+	struct i40e_rx_ptype_decoded decoded = decode_rx_desc_ptype(ptype);
+
+	ret = _i40e_rx_checksum(vsi, qword, decoded);
+	skb->ip_summed  = ret.ip_summed;
+	skb->csum_level = ret.csum_level;
 }
 
 /**



  parent reply	other threads:[~2022-09-07 15:45 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-07 15:45 [xdp-hints] [PATCH RFCv2 bpf-next 00/18] XDP-hints: XDP gaining access to HW offload hints via BTF Jesper Dangaard Brouer
2022-09-07 15:45 ` [xdp-hints] [PATCH RFCv2 bpf-next 01/18] libbpf: factor out BTF loading from load_module_btfs() Jesper Dangaard Brouer
2022-09-07 15:45 ` [xdp-hints] [PATCH RFCv2 bpf-next 02/18] libbpf: try to load vmlinux BTF from the kernel first Jesper Dangaard Brouer
2022-09-07 15:45 ` [xdp-hints] [PATCH RFCv2 bpf-next 03/18] libbpf: patch module BTF obj+type ID into BPF insns Jesper Dangaard Brouer
2022-09-07 15:45 ` [xdp-hints] [PATCH RFCv2 bpf-next 04/18] net: create xdp_hints_common and set functions Jesper Dangaard Brouer
2022-09-09 10:49   ` [xdp-hints] " Burakov, Anatoly
2022-09-09 14:13     ` Jesper Dangaard Brouer
2022-09-07 15:45 ` [xdp-hints] [PATCH RFCv2 bpf-next 05/18] net: add net_device feature flag for XDP-hints Jesper Dangaard Brouer
2022-09-07 15:45 ` [xdp-hints] [PATCH RFCv2 bpf-next 06/18] xdp: controlling XDP-hints from BPF-prog via helper Jesper Dangaard Brouer
2022-09-07 15:45 ` [xdp-hints] [PATCH RFCv2 bpf-next 07/18] i40e: Refactor i40e_ptp_rx_hwtstamp Jesper Dangaard Brouer
2022-09-07 15:45 ` Jesper Dangaard Brouer [this message]
2022-09-07 15:45 ` [xdp-hints] [PATCH RFCv2 bpf-next 09/18] bpf: export btf functions for modules Jesper Dangaard Brouer
2022-09-07 15:45 ` [xdp-hints] [PATCH RFCv2 bpf-next 10/18] btf: Add helper for kernel modules to lookup full BTF ID Jesper Dangaard Brouer
2022-09-07 15:45 ` [xdp-hints] [PATCH RFCv2 bpf-next 11/18] i40e: add XDP-hints handling Jesper Dangaard Brouer
2022-09-07 15:46 ` [xdp-hints] [PATCH RFCv2 bpf-next 12/18] net: use XDP-hints in xdp_frame to SKB conversion Jesper Dangaard Brouer
2022-09-07 15:46 ` [xdp-hints] [PATCH RFCv2 bpf-next 13/18] mvneta: add XDP-hints support Jesper Dangaard Brouer
2022-09-07 15:46 ` [xdp-hints] [PATCH RFCv2 bpf-next 14/18] i40e: Add xdp_hints_union Jesper Dangaard Brouer
2022-09-07 15:46 ` [xdp-hints] [PATCH RFCv2 bpf-next 15/18] ixgbe: enable xdp-hints Jesper Dangaard Brouer
2022-09-07 15:46 ` [xdp-hints] [PATCH RFCv2 bpf-next 16/18] ixgbe: add rx timestamp xdp hints support Jesper Dangaard Brouer
2022-09-07 15:46 ` [xdp-hints] [PATCH RFCv2 bpf-next 17/18] xsk: AF_XDP xdp-hints support in desc options Jesper Dangaard Brouer
2022-09-08  8:06   ` [xdp-hints] " Magnus Karlsson
2022-09-08 10:10     ` Maryam Tahhan
2022-09-08 15:04       ` Jesper Dangaard Brouer
2022-09-09  6:43         ` Magnus Karlsson
2022-09-09  8:12           ` Maryam Tahhan
2022-09-09  9:42             ` Jesper Dangaard Brouer
2022-09-09 10:14               ` Magnus Karlsson
2022-09-09 12:35                 ` Jesper Dangaard Brouer
2022-09-09 12:44                   ` Magnus Karlsson
2022-09-07 15:46 ` [xdp-hints] [PATCH RFCv2 bpf-next 18/18] ixgbe: AF_XDP xdp-hints processing in ixgbe_clean_rx_irq_zc Jesper Dangaard Brouer
2022-09-08  9:30 ` [xdp-hints] Re: [PATCH RFCv2 bpf-next 00/18] XDP-hints: XDP gaining access to HW offload hints via BTF Alexander Lobakin
2022-09-09 13:48   ` Jesper Dangaard Brouer
2022-10-03 23:55 ` sdf
2022-10-04  9:29   ` Jesper Dangaard Brouer
2022-10-04 18:26     ` Stanislav Fomichev
2022-10-05  0:25       ` Martin KaFai Lau
2022-10-05  0:59         ` Jakub Kicinski
2022-10-05  1:02           ` Stanislav Fomichev
2022-10-05  1:24             ` Jakub Kicinski
2022-10-05  2:15               ` Stanislav Fomichev
2022-10-05 19:26                 ` Martin KaFai Lau
2022-10-06  9:14                   ` Magnus Karlsson
2022-10-06 15:29                     ` Jesper Dangaard Brouer
2022-10-11  6:29                       ` Martin KaFai Lau
2022-10-11 11:57                         ` Jesper Dangaard Brouer
2022-10-05 10:06             ` Toke Høiland-Jørgensen
2022-10-05 18:47               ` sdf
2022-10-06  8:19                 ` Maryam Tahhan
2022-10-06 17:22                   ` sdf
2022-10-05 14:19             ` Jesper Dangaard Brouer
2022-10-06 14:59               ` Jakub Kicinski
2022-10-05 13:43         ` Jesper Dangaard Brouer
2022-10-05 16:29       ` Jesper Dangaard Brouer
2022-10-05 18:43         ` sdf
2022-10-06 17:47           ` Jesper Dangaard Brouer
2022-10-07 15:05             ` David Ahern
2022-10-05 13:14     ` Burakov, Anatoly

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