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This adds infrastructure code for FCoE Rx side offload feature to 82599, which provides large receive offload for FCoE by Direct Data Placement (DDP). The ixgbe_fcoe_ddp_get() and ixgbe_fcoe_ddp_put() pair corresponds to the netdev support to FCoE by the function pointers provided in net_device_ops as ndo_fcoe_ddp_setup and ndo_fcoe_ddp_done. The implementation of these in ixgbe is shown in the next patch. Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Chris Leech <christopher.leech@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
/*******************************************************************************
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Intel 10 Gigabit PCI Express Linux driver
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Copyright(c) 1999 - 2009 Intel Corporation.
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Contact Information:
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e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*******************************************************************************/
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#ifndef _IXGBE_FCOE_H
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#define _IXGBE_FCOE_H
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#include <scsi/fc/fc_fcoe.h>
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/* shift bits within STAT fo FCSTAT */
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#define IXGBE_RXDADV_FCSTAT_SHIFT 4
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/* ddp user buffer */
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#define IXGBE_BUFFCNT_MAX 256 /* 8 bits bufcnt */
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#define IXGBE_FCPTR_ALIGN 16
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#define IXGBE_FCPTR_MAX (IXGBE_BUFFCNT_MAX * sizeof(dma_addr_t))
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#define IXGBE_FCBUFF_4KB 0x0
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#define IXGBE_FCBUFF_8KB 0x1
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#define IXGBE_FCBUFF_16KB 0x2
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#define IXGBE_FCBUFF_64KB 0x3
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#define IXGBE_FCBUFF_MAX 65536 /* 64KB max */
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#define IXGBE_FCBUFF_MIN 4096 /* 4KB min */
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#define IXGBE_FCOE_DDP_MAX 512 /* 9 bits xid */
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/* fcerr */
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#define IXGBE_FCERR_BADCRC 0x00100000
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struct ixgbe_fcoe_ddp {
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int len;
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u32 err;
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unsigned int sgc;
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struct scatterlist *sgl;
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dma_addr_t udp;
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u64 *udl;
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};
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struct ixgbe_fcoe {
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spinlock_t lock;
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struct pci_pool *pool;
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struct ixgbe_fcoe_ddp ddp[IXGBE_FCOE_DDP_MAX];
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};
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#endif /* _IXGBE_FCOE_H */
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