dc8596d303
Allow a vport specific string to be appended to the port symbolic name. The new symbolic name is sent to the name server after it is set. This currently messes with libhbalinux, which is looking for the fcoe "fcoe <ver> over <ethX>" string and expects whatever comes after the "over" to be a network interface name only. Adds an EXPORT_SYMBOL to libfc for fc_frame_alloc_fill, which is needed to allow fcoe to allocate a frame of variable length for the RSPN request. Signed-off-by: Chris Leech <christopher.leech@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/*
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* Copyright(c) 2007 Intel Corporation. All rights reserved.
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*
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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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*
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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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*
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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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*
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* Maintained at www.Open-FCoE.org
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*/
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/*
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* Frame allocation.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/skbuff.h>
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#include <linux/crc32.h>
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#include <scsi/fc_frame.h>
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/*
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* Check the CRC in a frame.
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*/
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u32 fc_frame_crc_check(struct fc_frame *fp)
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{
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u32 crc;
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u32 error;
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const u8 *bp;
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unsigned int len;
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WARN_ON(!fc_frame_is_linear(fp));
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fr_flags(fp) &= ~FCPHF_CRC_UNCHECKED;
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len = (fr_len(fp) + 3) & ~3; /* round up length to include fill */
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bp = (const u8 *) fr_hdr(fp);
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crc = ~crc32(~0, bp, len);
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error = crc ^ fr_crc(fp);
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return error;
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}
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EXPORT_SYMBOL(fc_frame_crc_check);
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/*
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* Allocate a frame intended to be sent via fcoe_xmit.
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* Get an sk_buff for the frame and set the length.
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*/
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struct fc_frame *__fc_frame_alloc(size_t len)
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{
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struct fc_frame *fp;
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struct sk_buff *skb;
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WARN_ON((len % sizeof(u32)) != 0);
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len += sizeof(struct fc_frame_header);
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skb = dev_alloc_skb(len + FC_FRAME_HEADROOM + FC_FRAME_TAILROOM);
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if (!skb)
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return NULL;
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fp = (struct fc_frame *) skb;
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fc_frame_init(fp);
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skb_reserve(skb, FC_FRAME_HEADROOM);
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skb_put(skb, len);
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return fp;
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}
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EXPORT_SYMBOL(__fc_frame_alloc);
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struct fc_frame *fc_frame_alloc_fill(struct fc_lport *lp, size_t payload_len)
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{
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struct fc_frame *fp;
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size_t fill;
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fill = payload_len % 4;
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if (fill != 0)
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fill = 4 - fill;
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fp = __fc_frame_alloc(payload_len + fill);
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if (fp) {
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memset((char *) fr_hdr(fp) + payload_len, 0, fill);
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/* trim is OK, we just allocated it so there are no fragments */
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skb_trim(fp_skb(fp),
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payload_len + sizeof(struct fc_frame_header));
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}
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return fp;
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}
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EXPORT_SYMBOL(fc_frame_alloc_fill);
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