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From: Oleksij Rempel <o.rempel@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Subject: [PATCH v5 01/14] net: add RX preprocessor support
Date: Wed, 13 Apr 2022 10:21:52 +0200	[thread overview]
Message-ID: <20220413082205.429509-2-o.rempel@pengutronix.de> (raw)
In-Reply-To: <20220413082205.429509-1-o.rempel@pengutronix.de>

Add callback for optional rx_preprocessor. This is needed to add DSA
switch support and demultiplex traffic received from different switch ports.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
 include/net.h |  3 +++
 net/net.c     | 11 +++++++++++
 2 files changed, 14 insertions(+)

diff --git a/include/net.h b/include/net.h
index aad28e4f4c..ca9b6cd61e 100644
--- a/include/net.h
+++ b/include/net.h
@@ -44,9 +44,12 @@ struct eth_device {
 	void (*halt) (struct eth_device*);
 	int  (*get_ethaddr) (struct eth_device*, u8 adr[6]);
 	int  (*set_ethaddr) (struct eth_device*, const unsigned char *adr);
+	int  (*rx_preprocessor) (struct eth_device*, unsigned char **packet,
+				 int *length);
 
 	struct eth_device *next;
 	void *priv;
+	void *rx_preprocessor_priv;
 
 	/* phy device may attach itself for hardware timestamping */
 	struct phy_device *phydev;
diff --git a/net/net.c b/net/net.c
index fdb9ab826c..0b8e4caa0e 100644
--- a/net/net.c
+++ b/net/net.c
@@ -708,6 +708,17 @@ int net_receive(struct eth_device *edev, unsigned char *pkt, int len)
 		goto out;
 	}
 
+	if (edev->rx_preprocessor) {
+		ret = edev->rx_preprocessor(edev, &pkt, &len);
+		if (ret == -ENOMSG)
+			return 0;
+		if (ret) {
+			pr_debug("%s: rx_preprocessor failed %pe\n", __func__,
+				 ERR_PTR(ret));
+			return ret;
+		}
+	}
+
 	switch (et_protlen) {
 	case PROT_ARP:
 		ret = net_handle_arp(edev, pkt, len);
-- 
2.30.2


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  reply	other threads:[~2022-04-13  8:24 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-13  8:21 [PATCH v5 00/14] provide DSA support Oleksij Rempel
2022-04-13  8:21 ` Oleksij Rempel [this message]
2022-04-13  8:21 ` [PATCH v5 02/14] net: add of_find_eth_device_by_node() function Oleksij Rempel
2022-04-13  8:21 ` [PATCH v5 03/14] net: phy: export of_phy_register_fixed_link() function Oleksij Rempel
2022-04-13  8:21 ` [PATCH v5 04/14] net: add DSA framework to support basic switch functionality Oleksij Rempel
2022-04-13  8:21 ` [PATCH v5 05/14] driver: add dev_get_priv() helper Oleksij Rempel
2022-04-13  8:21 ` [PATCH v5 06/14] net: port part of if_vlan header from kernel v5.17 Oleksij Rempel
2022-04-13  8:21 ` [PATCH v5 07/14] spi: port spi_sync_transfer() function " Oleksij Rempel
2022-04-13  8:21 ` [PATCH v5 08/14] net: mdio: add MDIO_DEVAD_NONE define Oleksij Rempel
2022-04-13  8:22 ` [PATCH v5 09/14] net: phy: make sure MDIO bus is probed if we search for the PHY Oleksij Rempel
2022-04-13  8:22 ` [PATCH v5 10/14] of_net: add rev-rmii support Oleksij Rempel
2022-04-13  8:22 ` [PATCH v5 11/14] net: dsa: add support for SJA11xx switches Oleksij Rempel
2022-04-13  8:22 ` [PATCH v5 12/14] net: dsa: add KSZ9477 switch SPI driver Oleksij Rempel
2022-07-30  9:10   ` Ahmad Fatoum
2022-07-30 11:27     ` Oleksij Rempel
2022-04-13  8:22 ` [PATCH v5 13/14] hexdump: provide support for dev_print_hex_dump() Oleksij Rempel
2022-04-13  8:22 ` [PATCH v5 14/14] add ethlog command Oleksij Rempel
2022-04-14  7:42 ` [PATCH v5 00/14] provide DSA support Sascha Hauer

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