/*
 * Copyright (c) 2016 HGST, a Western Digital Company.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 */
#ifndef _RDMA_RW_H
#define _RDMA_RW_H

#include <linux/dma-mapping.h>
#include <linux/scatterlist.h>
#include <rdma/ib_verbs.h>
#include <rdma/rdma_cm.h>
#include <rdma/mr_pool.h>

struct rdma_rw_ctx {
	/* number of RDMA READ/WRITE WRs (not counting MR WRs) */
	u32			nr_ops;

	/* tag for the union below: */
	u8			type;

	union {
		/* for mapping a single SGE: */
		struct {
			struct ib_sge		sge;
			struct ib_rdma_wr	wr;
		} single;

		/* for mapping of multiple SGEs: */
		struct {
			struct ib_sge		*sges;
			struct ib_rdma_wr	*wrs;
		} map;

		/* for registering multiple WRs: */
		struct rdma_rw_reg_ctx {
			struct ib_sge		sge;
			struct ib_rdma_wr	wr;
			struct ib_reg_wr	reg_wr;
			struct ib_send_wr	inv_wr;
			struct ib_mr		*mr;
		} *reg;

		struct {
			struct rdma_rw_reg_ctx	data;
			struct rdma_rw_reg_ctx	prot;
			struct ib_send_wr	sig_inv_wr;
			struct ib_mr		*sig_mr;
			struct ib_sge		sig_sge;
			struct ib_sig_handover_wr sig_wr;
		} *sig;
	};
};

int rdma_rw_ctx_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u8 port_num,
		struct scatterlist *sg, u32 sg_cnt, u32 sg_offset,
		u64 remote_addr, u32 rkey, enum dma_data_direction dir);
void rdma_rw_ctx_destroy(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u8 port_num,
		struct scatterlist *sg, u32 sg_cnt,
		enum dma_data_direction dir);

int rdma_rw_ctx_signature_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
		u8 port_num, struct scatterlist *sg, u32 sg_cnt,
		struct scatterlist *prot_sg, u32 prot_sg_cnt,
		struct ib_sig_attrs *sig_attrs, u64 remote_addr, u32 rkey,
		enum dma_data_direction dir);
void rdma_rw_ctx_destroy_signature(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
		u8 port_num, struct scatterlist *sg, u32 sg_cnt,
		struct scatterlist *prot_sg, u32 prot_sg_cnt,
		enum dma_data_direction dir);

struct ib_send_wr *rdma_rw_ctx_wrs(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
		u8 port_num, struct ib_cqe *cqe, struct ib_send_wr *chain_wr);
int rdma_rw_ctx_post(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u8 port_num,
		struct ib_cqe *cqe, struct ib_send_wr *chain_wr);

void rdma_rw_init_qp(struct ib_device *dev, struct ib_qp_init_attr *attr);
int rdma_rw_init_mrs(struct ib_qp *qp, struct ib_qp_init_attr *attr);
void rdma_rw_cleanup_mrs(struct ib_qp *qp);

#endif /* _RDMA_RW_H */
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/diff/?id=9ce12d8be12c94334634dd57050444910415e45f&amp;id2=e2b6535d47ce223e327de053b804d2e572a98bbc'>root</a>/<a href='/cgit.cgi/linux/net-next.git/diff/include?id=9ce12d8be12c94334634dd57050444910415e45f&amp;id2=e2b6535d47ce223e327de053b804d2e572a98bbc'>include</a>/<a href='/cgit.cgi/linux/net-next.git/diff/include/xen?id=9ce12d8be12c94334634dd57050444910415e45f&amp;id2=e2b6535d47ce223e327de053b804d2e572a98bbc'>xen</a>/<a href='/cgit.cgi/linux/net-next.git/diff/include/xen/interface?id=9ce12d8be12c94334634dd57050444910415e45f&amp;id2=e2b6535d47ce223e327de053b804d2e572a98bbc'>interface</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='9ce12d8be12c94334634dd57050444910415e45f'/><input type='hidden' name='id2' value='e2b6535d47ce223e327de053b804d2e572a98bbc'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=9ce12d8be12c94334634dd57050444910415e45f&amp;id2=e2b6535d47ce223e327de053b804d2e572a98bbc'>Diffstat</a> (limited to 'include/xen/interface')</div><table summary='diffstat' class='diffstat'>/tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>c7ad49d05da0535170c8e7710cd44ae1cecc271f</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/sound/emu10k1_synth.h?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>include/sound/emu10k1_synth.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/sound/emu10k1_synth.h?id=2d4b21e0a2913612274a69a3ba1bfee4cffc6e77'>2d4b21e0a2913612274a69a3ba1bfee4cffc6e77</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/sound/emu10k1_synth.h?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934&amp;id2=2d4b21e0a2913612274a69a3ba1bfee4cffc6e77'>diff</a>)</td></tr></table>
<div class='commit-subject'>RDMA/cma: Fix unknown symbol when CONFIG_IPV6 is not enabled</div><div class='commit-msg'>If IPV6 has not been enabled in the underlying kernel, we must avoid
calling IPV6 procedures in rdma_cm.ko.

This requires using "IS_ENABLED(CONFIG_IPV6)" in "if" statements
surrounding any code which calls external IPV6 procedures.

In the instance fixed here, procedure cma_bind_addr() called
ipv6_addr_type() -- which resulted in calling external procedure
__ipv6_addr_type().

Fixes: 6c26a77124ff ("RDMA/cma: fix IPv6 address resolution")
Cc: &lt;stable@vger.kernel.org&gt; # v4.2+
Cc: Spencer Baugh &lt;sbaugh@catern.com&gt;
Signed-off-by: Jack Morgenstein &lt;jackm@dev.mellanox.co.il&gt;
Reviewed-by: Moni Shoua &lt;monis@mellanox.com&gt;
Signed-off-by: Leon Romanovsky &lt;leon@kernel.org&gt;
Signed-off-by: Doug Ledford &lt;dledford@redhat.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=b4cfe3971f6eab542dd7ecc398bfa1aeec889934'>Diffstat</a> (limited to 'include/sound/emu10k1_synth.h')</div><table summary='diffstat' class='diffstat'> nvme target code

   - A revert of patch from this merge window, causing a regression with
     WRITE_SAME on iSCSI targets at least.

   - A fix for a use-after-free in the new O_DIRECT bdev code.

   - Two fixes for the xen-blkfront driver"

* 'for-linus' of git://git.kernel.dk/linux-block:
  Revert "sd: remove __data_len hack for WRITE SAME"
  nvme-fc: use blk_rq_nr_phys_segments
  nvmet-rdma: Fix missing dma sync to nvme data structures
  nvmet: Call fatal_error from keep-alive timout expiration
  nvmet: cancel fatal error and flush async work before free controller
  nvmet: delete controllers deletion upon subsystem release
  nvmet_fc: correct logic in disconnect queue LS handling
  block: fix use after free in __blkdev_direct_IO
  xen-blkfront: correct maximum segment accounting
  xen-blkfront: feature flags handling adjustments
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=2fb78e89405f4321b86274a0c24b30896dd50529'>Diffstat</a> (limited to 'include/dt-bindings/clock/microchip,pic32-clock.h')</div><table summary='diffstat' class='diffstat'>