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linux/drivers/net/chelsio/cpl5_cmd.h

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[PATCH] A new 10GB Ethernet Driver by Chelsio Communications A Linux driver for the Chelsio 10Gb Ethernet Network Controller by Chelsio (http://www.chelsio.com). This driver supports the Chelsio N210 NIC and is backward compatible with the Chelsio N110 model 10Gb NICs. It supports AMD64, EM64T and x86 systems. Signed-off-by: Tina Yang <tinay@chelsio.com> Signed-off-by: Scott Bardone <sbardone@chelsio.com> Signed-off-by: Christoph Lameter <christoph@lameter.com> Adrian said: - my3126.c is unused (because t1_my3126_ops isn't used anywhere) - what are the EXTRA_CFLAGS in drivers/net/chelsio/Makefile for? - $(cxgb-y) in drivers/net/chelsio/Makefile seems to be unneeded - completely unused global functions: - espi.c: t1_espi_get_intr_counts - sge.c: t1_sge_get_intr_counts - the following functions can be made static: - sge.c: t1_espi_workaround - sge.c: t1_sge_tx - subr.c: __t1_tpi_read - subr.c: __t1_tpi_write - subr.c: t1_wait_op_done shemminger said: The performance recommendations in cxgb.txt are common to all fast devices, and should be in one file rather than just for this device. I would rather see ip-sysctl.txt updated or a new file on tuning recommendations started. Some of them have consequences that aren't documented well. For example, turning off TCP timestamps risks data corruption from sequence wrap. A new driver shouldn't need so may #ifdef's unless you want to putit on older vendor versions of 2.4 Some accessor and wrapper functions like: t1_pci_read_config_4 adapter_name t1_malloc are just annoying noise. Why have useless dead code like: /* Interrupt handler */ +static int pm3393_interrupt_handler(struct cmac *cmac) +{ + u32 master_intr_status; +/* + 1. Read master interrupt register. + 2. Read BLOCK's interrupt status registers. + 3. Handle BLOCK interrupts. +*/ Jeff said: step 1: kill all the OS wrappers. And do you really need hooks for multiple MACs, when only one MAC is really supported? Typically these hooks are at a higher level anyway -- struct net_device. From: Christoph Lameter <christoph@lameter Driver modified as suggested by Pekka Enberg, Stephen Hemminger and Andrian Bunk. Reduces the size of the driver to ~260k. - clean up tabs - removed my3126.c - removed 85% of suni1x10gexp_regs.h - removed 80% of regs.h - removed various calls, renamed variables/functions. - removed system specific and other wrappers (usleep, msleep) - removed dead code - dropped redundant casts in osdep.h - dropped redundant check of kfree - dropped weird code (MODVERSIONS stuff) - reduced number of #ifdefs - use kcalloc now instead of kmalloc - Add information about known issues with the driver - Add information about authors Signed-off-by: Scott Bardone <sbardone@chelsio.com> Signed-off-by: Christoph Lameter <christoph@lameter.com> Signed-off-by: Andrew Morton <akpm@osdl.org> diff -puN /dev/null Documentation/networking/cxgb.txt
2005-03-30 21:34:31 +00:00
/*****************************************************************************
* *
* File: cpl5_cmd.h *
* $Revision: 1.4 $ *
* $Date: 2005/03/23 07:15:58 $ *
* Description: *
* part of the Chelsio 10Gb Ethernet Driver. *
* *
* 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. *
* *
* You should have received a copy of the GNU General Public License along *
* with this program; if not, write to the Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED *
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF *
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. *
* *
* http://www.chelsio.com *
* *
* Copyright (c) 2003 - 2005 Chelsio Communications, Inc. *
* All rights reserved. *
* *
* Maintainers: maintainers@chelsio.com *
* *
* Authors: Dimitrios Michailidis <dm@chelsio.com> *
* Tina Yang <tainay@chelsio.com> *
* Felix Marti <felix@chelsio.com> *
* Scott Bardone <sbardone@chelsio.com> *
* Kurt Ottaway <kottaway@chelsio.com> *
* Frank DiMambro <frank@chelsio.com> *
* *
* History: *
* *
****************************************************************************/
#ifndef _CPL5_CMD_H
#define _CPL5_CMD_H
#include <asm/byteorder.h>
#if !defined(__LITTLE_ENDIAN_BITFIELD) && !defined(__BIG_ENDIAN_BITFIELD)
#error "Adjust your <asm/byteorder.h> defines"
#endif
enum CPL_opcode {
CPL_RX_PKT = 0xAD,
CPL_TX_PKT = 0xB2,
CPL_TX_PKT_LSO = 0xB6,
};
enum { /* TX_PKT_LSO ethernet types */
CPL_ETH_II,
CPL_ETH_II_VLAN,
CPL_ETH_802_3,
CPL_ETH_802_3_VLAN
};
struct cpl_rx_data {
__u32 rsvd0;
__u32 len;
__u32 seq;
__u16 urg;
__u8 rsvd1;
__u8 status;
};
/*
* We want this header's alignment to be no more stringent than 2-byte aligned.
* All fields are u8 or u16 except for the length. However that field is not
* used so we break it into 2 16-bit parts to easily meet our alignment needs.
*/
struct cpl_tx_pkt {
__u8 opcode;
#if defined(__LITTLE_ENDIAN_BITFIELD)
__u8 iff:4;
__u8 ip_csum_dis:1;
__u8 l4_csum_dis:1;
__u8 vlan_valid:1;
__u8 rsvd:1;
#else
__u8 rsvd:1;
__u8 vlan_valid:1;
__u8 l4_csum_dis:1;
__u8 ip_csum_dis:1;
__u8 iff:4;
#endif
__u16 vlan;
__u16 len_hi;
__u16 len_lo;
};
struct cpl_tx_pkt_lso {
__u8 opcode;
#if defined(__LITTLE_ENDIAN_BITFIELD)
__u8 iff:4;
__u8 ip_csum_dis:1;
__u8 l4_csum_dis:1;
__u8 vlan_valid:1;
__u8 rsvd:1;
#else
__u8 rsvd:1;
__u8 vlan_valid:1;
__u8 l4_csum_dis:1;
__u8 ip_csum_dis:1;
__u8 iff:4;
#endif
__u16 vlan;
__u32 len;
__u32 rsvd2;
__u8 rsvd3;
#if defined(__LITTLE_ENDIAN_BITFIELD)
__u8 tcp_hdr_words:4;
__u8 ip_hdr_words:4;
#else
__u8 ip_hdr_words:4;
__u8 tcp_hdr_words:4;
#endif
__u16 eth_type_mss;
};
struct cpl_rx_pkt {
__u8 opcode;
#if defined(__LITTLE_ENDIAN_BITFIELD)
__u8 iff:4;
__u8 csum_valid:1;
__u8 bad_pkt:1;
__u8 vlan_valid:1;
__u8 rsvd:1;
#else
__u8 rsvd:1;
__u8 vlan_valid:1;
__u8 bad_pkt:1;
__u8 csum_valid:1;
__u8 iff:4;
#endif
__u16 csum;
__u16 vlan;
__u16 len;
};
#endif