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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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44770e1180
et131x: min_mtu 64, max_mtu 9216 altera_tse: min_mtu 64, max_mtu 1500 amd8111e: min_mtu 60, max_mtu 9000 bnad: min_mtu 46, max_mtu 9000 macb: min_mtu 68, max_mtu 1500 or 10240 depending on hardware capability xgmac: min_mtu 46, max_mtu 9000 cxgb2: min_mtu 68, max_mtu 9582 (pm3393) or 9600 (vsc7326) enic: min_mtu 68, max_mtu 9000 gianfar: min_mtu 50, max_mu 9586 hns_enet: min_mtu 68, max_mtu 9578 (v1) or 9706 (v2) ksz884x: min_mtu 60, max_mtu 1894 myri10ge: min_mtu 68, max_mtu 9000 natsemi: min_mtu 64, max_mtu 2024 nfp: min_mtu 68, max_mtu hardware-specific forcedeth: min_mtu 64, max_mtu 1500 or 9100, depending on hardware pch_gbe: min_mtu 46, max_mtu 10300 pasemi_mac: min_mtu 64, max_mtu 9000 qcaspi: min_mtu 46, max_mtu 1500 - remove qcaspi_netdev_change_mtu as it is now redundant rocker: min_mtu 68, max_mtu 9000 sxgbe: min_mtu 68, max_mtu 9000 stmmac: min_mtu 46, max_mtu depends on hardware tehuti: min_mtu 60, max_mtu 16384 - driver had no max mtu checking, but product docs say 16k jumbo packets are supported by the hardware netcp: min_mtu 68, max_mtu 9486 - remove netcp_ndo_change_mtu as it is now redundant via-velocity: min_mtu 64, max_mtu 9000 octeon: min_mtu 46, max_mtu 65370 CC: netdev@vger.kernel.org CC: Mark Einon <mark.einon@gmail.com> CC: Vince Bridgers <vbridger@opensource.altera.com> CC: Rasesh Mody <rasesh.mody@qlogic.com> CC: Nicolas Ferre <nicolas.ferre@atmel.com> CC: Santosh Raspatur <santosh@chelsio.com> CC: Hariprasad S <hariprasad@chelsio.com> CC: Christian Benvenuti <benve@cisco.com> CC: Sujith Sankar <ssujith@cisco.com> CC: Govindarajulu Varadarajan <_govind@gmx.com> CC: Neel Patel <neepatel@cisco.com> CC: Claudiu Manoil <claudiu.manoil@freescale.com> CC: Yisen Zhuang <yisen.zhuang@huawei.com> CC: Salil Mehta <salil.mehta@huawei.com> CC: Hyong-Youb Kim <hykim@myri.com> CC: Jakub Kicinski <jakub.kicinski@netronome.com> CC: Olof Johansson <olof@lixom.net> CC: Jiri Pirko <jiri@resnulli.us> CC: Byungho An <bh74.an@samsung.com> CC: Girish K S <ks.giri@samsung.com> CC: Vipul Pandya <vipul.pandya@samsung.com> CC: Giuseppe Cavallaro <peppe.cavallaro@st.com> CC: Alexandre Torgue <alexandre.torgue@st.com> CC: Andy Gospodarek <andy@greyhouse.net> CC: Wingman Kwok <w-kwok2@ti.com> CC: Murali Karicheri <m-karicheri2@ti.com> CC: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
135 lines
3.9 KiB
C
135 lines
3.9 KiB
C
/*
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* Copyright (c) 2011, 2012, Atheros Communications Inc.
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* Copyright (c) 2014, I2SE GmbH
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*
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* Permission to use, copy, modify, and/or distribute this software
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* for any purpose with or without fee is hereby granted, provided
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* that the above copyright notice and this permission notice appear
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* in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* Atheros Ethernet framing. Every Ethernet frame is surrounded by an atheros
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* frame while transmitted over a serial channel.
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*/
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#ifndef _QCA_FRAMING_H
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#define _QCA_FRAMING_H
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#include <linux/if_ether.h>
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#include <linux/if_vlan.h>
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#include <linux/types.h>
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/* Frame is currently being received */
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#define QCAFRM_GATHER 0
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/* No header byte while expecting it */
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#define QCAFRM_NOHEAD (QCAFRM_ERR_BASE - 1)
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/* No tailer byte while expecting it */
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#define QCAFRM_NOTAIL (QCAFRM_ERR_BASE - 2)
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/* Frame length is invalid */
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#define QCAFRM_INVLEN (QCAFRM_ERR_BASE - 3)
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/* Frame length is invalid */
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#define QCAFRM_INVFRAME (QCAFRM_ERR_BASE - 4)
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/* Min/Max Ethernet MTU: 46/1500 */
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#define QCAFRM_ETHMINMTU (ETH_ZLEN - ETH_HLEN)
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#define QCAFRM_ETHMAXMTU ETH_DATA_LEN
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/* Min/Max frame lengths */
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#define QCAFRM_ETHMINLEN (QCAFRM_ETHMINMTU + ETH_HLEN)
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#define QCAFRM_ETHMAXLEN (QCAFRM_ETHMAXMTU + VLAN_ETH_HLEN)
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/* QCA7K header len */
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#define QCAFRM_HEADER_LEN 8
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/* QCA7K footer len */
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#define QCAFRM_FOOTER_LEN 2
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/* QCA7K Framing. */
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#define QCAFRM_ERR_BASE -1000
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enum qcafrm_state {
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QCAFRM_HW_LEN0 = 0x8000,
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QCAFRM_HW_LEN1 = QCAFRM_HW_LEN0 - 1,
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QCAFRM_HW_LEN2 = QCAFRM_HW_LEN1 - 1,
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QCAFRM_HW_LEN3 = QCAFRM_HW_LEN2 - 1,
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/* Waiting first 0xAA of header */
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QCAFRM_WAIT_AA1 = QCAFRM_HW_LEN3 - 1,
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/* Waiting second 0xAA of header */
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QCAFRM_WAIT_AA2 = QCAFRM_WAIT_AA1 - 1,
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/* Waiting third 0xAA of header */
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QCAFRM_WAIT_AA3 = QCAFRM_WAIT_AA2 - 1,
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/* Waiting fourth 0xAA of header */
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QCAFRM_WAIT_AA4 = QCAFRM_WAIT_AA3 - 1,
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/* Waiting Byte 0-1 of length (litte endian) */
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QCAFRM_WAIT_LEN_BYTE0 = QCAFRM_WAIT_AA4 - 1,
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QCAFRM_WAIT_LEN_BYTE1 = QCAFRM_WAIT_AA4 - 2,
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/* Reserved bytes */
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QCAFRM_WAIT_RSVD_BYTE1 = QCAFRM_WAIT_AA4 - 3,
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QCAFRM_WAIT_RSVD_BYTE2 = QCAFRM_WAIT_AA4 - 4,
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/* The frame length is used as the state until
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* the end of the Ethernet frame
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* Waiting for first 0x55 of footer
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*/
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QCAFRM_WAIT_551 = 1,
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/* Waiting for second 0x55 of footer */
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QCAFRM_WAIT_552 = QCAFRM_WAIT_551 - 1
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};
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/* Structure to maintain the frame decoding during reception. */
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struct qcafrm_handle {
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/* Current decoding state */
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enum qcafrm_state state;
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/* Offset in buffer (borrowed for length too) */
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s16 offset;
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/* Frame length as kept by this module */
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u16 len;
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};
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u16 qcafrm_create_header(u8 *buf, u16 len);
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u16 qcafrm_create_footer(u8 *buf);
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static inline void qcafrm_fsm_init(struct qcafrm_handle *handle)
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{
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handle->state = QCAFRM_HW_LEN0;
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}
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/* Gather received bytes and try to extract a full Ethernet frame
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* by following a simple state machine.
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*
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* Return: QCAFRM_GATHER No Ethernet frame fully received yet.
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* QCAFRM_NOHEAD Header expected but not found.
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* QCAFRM_INVLEN QCA7K frame length is invalid
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* QCAFRM_NOTAIL Footer expected but not found.
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* > 0 Number of byte in the fully received
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* Ethernet frame
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*/
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s32 qcafrm_fsm_decode(struct qcafrm_handle *handle, u8 *buf, u16 buf_len, u8 recv_byte);
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#endif /* _QCA_FRAMING_H */
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