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|
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
*/
/*
* This file contains code imported from the OFED rds source file ib_rdma.c
* Oracle elects to have and use the contents of ib_rdma.c under and governed
* by the OpenIB.org BSD license (see below for full license text). However,
* the following notice accompanied the original version of this file:
*/
/*
* Copyright (c) 2006 Oracle. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <sys/rds.h>
#include <netinet/in.h>
#include <sys/ib/clients/rdsv3/rdsv3.h>
#include <sys/ib/clients/rdsv3/rdma.h>
#include <sys/ib/clients/rdsv3/ib.h>
#include <sys/ib/clients/rdsv3/rdsv3_debug.h>
/*
* This is stored as mr->r_trans_private.
*/
struct rdsv3_ib_mr {
list_node_t m_obj; /* list obj of rdsv3_fmr_pool list */
struct rdsv3_ib_device *m_device;
struct rdsv3_fmr_pool *m_pool; /* hca fmr pool */
unsigned int m_inval:1;
struct rdsv3_scatterlist *sg;
unsigned int sg_len;
uint64_t *dma;
int sg_dma_len;
/* DDI pinned memory */
ddi_umem_cookie_t umem_cookie;
/* IBTF type definitions */
ibt_hca_hdl_t rc_hca_hdl;
ibt_fmr_pool_hdl_t fmr_pool_hdl;
ibt_ma_hdl_t rc_ma_hdl;
ibt_mr_hdl_t rc_fmr_hdl;
ibt_pmr_desc_t rc_mem_desc;
};
/*
* delayed freed fmr's
*/
struct rdsv3_fmr_pool {
list_t f_list; /* list of freed mr */
kmutex_t f_lock; /* lock of fmr pool */
int32_t f_listcnt;
};
static int rdsv3_ib_flush_mr_pool(struct rdsv3_ib_device *rds_ibdev,
ibt_fmr_pool_hdl_t pool_hdl, int free_all);
static void rdsv3_ib_teardown_mr(struct rdsv3_ib_mr *ibmr);
static void rdsv3_ib_mr_pool_flush_worker(struct rdsv3_work_s *work);
static struct rdsv3_ib_mr *rdsv3_ib_alloc_fmr(struct rdsv3_ib_device
*rds_ibdev);
static int rdsv3_ib_map_fmr(struct rdsv3_ib_device *rds_ibdev,
struct rdsv3_ib_mr *ibmr, struct buf *bp, unsigned int nents);
static struct rdsv3_ib_device *
rdsv3_ib_get_device(uint32_be_t ipaddr)
{
struct rdsv3_ib_device *rds_ibdev;
struct rdsv3_ib_ipaddr *i_ipaddr;
RDSV3_DPRINTF4("rdsv3_ib_get_device", "Enter: ipaddr: 0x%x", ipaddr);
RDSV3_FOR_EACH_LIST_NODE(rds_ibdev, &rdsv3_ib_devices, list) {
rw_enter(&rds_ibdev->rwlock, RW_READER);
RDSV3_FOR_EACH_LIST_NODE(i_ipaddr, &rds_ibdev->ipaddr_list,
list) {
if (i_ipaddr->ipaddr == ipaddr) {
rw_exit(&rds_ibdev->rwlock);
return (rds_ibdev);
}
}
rw_exit(&rds_ibdev->rwlock);
}
RDSV3_DPRINTF4("rdsv3_ib_get_device", "Return: ipaddr: 0x%x", ipaddr);
return (NULL);
}
static int
rdsv3_ib_add_ipaddr(struct rdsv3_ib_device *rds_ibdev, uint32_be_t ipaddr)
{
struct rdsv3_ib_ipaddr *i_ipaddr;
RDSV3_DPRINTF4("rdsv3_ib_add_ipaddr", "rds_ibdev: %p ipaddr: %x",
rds_ibdev, ipaddr);
i_ipaddr = kmem_alloc(sizeof (*i_ipaddr), KM_NOSLEEP);
if (!i_ipaddr)
return (-ENOMEM);
i_ipaddr->ipaddr = ipaddr;
rw_enter(&rds_ibdev->rwlock, RW_WRITER);
list_insert_tail(&rds_ibdev->ipaddr_list, i_ipaddr);
rw_exit(&rds_ibdev->rwlock);
return (0);
}
static void
rdsv3_ib_remove_ipaddr(struct rdsv3_ib_device *rds_ibdev, uint32_be_t ipaddr)
{
struct rdsv3_ib_ipaddr *i_ipaddr, *next;
struct rdsv3_ib_ipaddr *to_free = NULL;
RDSV3_DPRINTF4("rdsv3_ib_remove_ipaddr", "rds_ibdev: %p, ipaddr: %x",
rds_ibdev, ipaddr);
rw_enter(&rds_ibdev->rwlock, RW_WRITER);
RDSV3_FOR_EACH_LIST_NODE_SAFE(i_ipaddr, next, &rds_ibdev->ipaddr_list,
list) {
if (i_ipaddr->ipaddr == ipaddr) {
list_remove_node(&i_ipaddr->list);
to_free = i_ipaddr;
break;
}
}
rw_exit(&rds_ibdev->rwlock);
if (to_free) {
kmem_free(i_ipaddr, sizeof (*i_ipaddr));
}
RDSV3_DPRINTF4("rdsv3_ib_remove_ipaddr",
"Return: rds_ibdev: %p, ipaddr: %x", rds_ibdev, ipaddr);
}
int
rdsv3_ib_update_ipaddr(struct rdsv3_ib_device *rds_ibdev, uint32_be_t ipaddr)
{
struct rdsv3_ib_device *rds_ibdev_old;
RDSV3_DPRINTF4("rdsv3_ib_update_ipaddr", "rds_ibdev: %p, ipaddr: %x",
rds_ibdev, ipaddr);
rds_ibdev_old = rdsv3_ib_get_device(ipaddr);
if (rds_ibdev_old)
rdsv3_ib_remove_ipaddr(rds_ibdev_old, ipaddr);
return (rdsv3_ib_add_ipaddr(rds_ibdev, ipaddr));
}
void
rdsv3_ib_add_conn(struct rdsv3_ib_device *rds_ibdev,
struct rdsv3_connection *conn)
{
struct rdsv3_ib_connection *ic = conn->c_transport_data;
RDSV3_DPRINTF4("rdsv3_ib_add_conn", "rds_ibdev: %p, conn: %p",
rds_ibdev, conn);
/* conn was previously on the nodev_conns_list */
mutex_enter(&ib_nodev_conns_lock);
ASSERT(!list_is_empty(&ib_nodev_conns));
ASSERT(list_link_active(&ic->ib_node));
list_remove_node(&ic->ib_node);
mutex_enter(&rds_ibdev->spinlock);
list_insert_tail(&rds_ibdev->conn_list, ic);
ic->i_on_dev_list = B_TRUE;
mutex_exit(&rds_ibdev->spinlock);
mutex_exit(&ib_nodev_conns_lock);
}
void
rdsv3_ib_remove_conn(struct rdsv3_ib_device *rds_ibdev,
struct rdsv3_connection *conn)
{
struct rdsv3_ib_connection *ic = conn->c_transport_data;
RDSV3_DPRINTF4("rdsv3_ib_remove_conn", "rds_ibdev: %p, conn: %p",
rds_ibdev, conn);
/* place conn on nodev_conns_list */
mutex_enter(&ib_nodev_conns_lock);
mutex_enter(&rds_ibdev->spinlock);
ASSERT(list_link_active(&ic->ib_node));
list_remove_node(&ic->ib_node);
ic->i_on_dev_list = B_FALSE;
mutex_exit(&rds_ibdev->spinlock);
list_insert_tail(&ib_nodev_conns, ic);
mutex_exit(&ib_nodev_conns_lock);
RDSV3_DPRINTF4("rdsv3_ib_remove_conn",
"Return: rds_ibdev: %p, conn: %p", rds_ibdev, conn);
}
void
__rdsv3_ib_destroy_conns(struct list *list, kmutex_t *list_lock)
{
struct rdsv3_ib_connection *ic, *_ic;
list_t tmp_list;
RDSV3_DPRINTF4("__rdsv3_ib_destroy_conns", "Enter: list: %p", list);
/* avoid calling conn_destroy with irqs off */
mutex_enter(list_lock);
list_splice(list, &tmp_list);
mutex_exit(list_lock);
RDSV3_FOR_EACH_LIST_NODE_SAFE(ic, _ic, &tmp_list, ib_node) {
rdsv3_conn_destroy(ic->conn);
}
RDSV3_DPRINTF4("__rdsv3_ib_destroy_conns", "Return: list: %p", list);
}
void
rdsv3_ib_destroy_mr_pool(struct rdsv3_ib_device *rds_ibdev)
{
struct rdsv3_fmr_pool *pool = rds_ibdev->fmr_pool;
RDSV3_DPRINTF4("rdsv3_ib_destroy_mr_pool", "Enter: ibdev: %p",
rds_ibdev);
if (rds_ibdev->fmr_pool_hdl == NULL)
return;
if (pool) {
list_destroy(&pool->f_list);
kmem_free((void *) pool, sizeof (*pool));
}
(void) rdsv3_ib_flush_mr_pool(rds_ibdev, rds_ibdev->fmr_pool_hdl, 1);
(void) ibt_destroy_fmr_pool(ib_get_ibt_hca_hdl(rds_ibdev->dev),
rds_ibdev->fmr_pool_hdl);
}
#define IB_FMR_MAX_BUF_SIZE 0x1000000 /* 16MB max buf */
int
rdsv3_ib_create_mr_pool(struct rdsv3_ib_device *rds_ibdev)
{
uint_t h_page_sz;
ibt_fmr_pool_attr_t fmr_attr;
ibt_status_t ibt_status;
struct rdsv3_fmr_pool *pool;
RDSV3_DPRINTF4("rdsv3_ib_create_mr_pool",
"Enter: ibdev: %p", rds_ibdev);
pool = (struct rdsv3_fmr_pool *)kmem_zalloc(sizeof (*pool), KM_NOSLEEP);
if (pool == NULL) {
return (-ENOMEM);
}
/* setup FMR pool attributes */
h_page_sz = rds_ibdev->hca_attr.hca_page_sz * 1024;
fmr_attr.fmr_max_pages_per_fmr = (IB_FMR_MAX_BUF_SIZE / h_page_sz) + 2;
fmr_attr.fmr_pool_size = RDSV3_FMR_POOL_SIZE;
fmr_attr.fmr_dirty_watermark = 128;
fmr_attr.fmr_cache = B_FALSE;
fmr_attr.fmr_flags = IBT_MR_NOSLEEP | IBT_MR_ENABLE_LOCAL_WRITE |
IBT_MR_ENABLE_REMOTE_WRITE | IBT_MR_ENABLE_REMOTE_READ;
fmr_attr.fmr_page_sz = h_page_sz;
fmr_attr.fmr_func_hdlr = NULL;
fmr_attr.fmr_func_arg = (void *) NULL;
/* create the FMR pool */
ibt_status = ibt_create_fmr_pool(rds_ibdev->ibt_hca_hdl,
rds_ibdev->pd->ibt_pd, &fmr_attr, &rds_ibdev->fmr_pool_hdl);
if (ibt_status != IBT_SUCCESS) {
kmem_free((void *) pool, sizeof (*pool));
rds_ibdev->fmr_pool = NULL;
return (-ENOMEM);
}
list_create(&pool->f_list, sizeof (struct rdsv3_ib_mr),
offsetof(struct rdsv3_ib_mr, m_obj));
mutex_init(&pool->f_lock, NULL, MUTEX_DRIVER, NULL);
rds_ibdev->fmr_pool = pool;
rds_ibdev->max_fmrs = fmr_attr.fmr_pool_size;
rds_ibdev->fmr_message_size = fmr_attr.fmr_max_pages_per_fmr;
RDSV3_DPRINTF2("rdsv3_ib_create_mr_pool",
"Exit: ibdev: %p fmr_pool: %p", rds_ibdev, pool);
return (0);
}
void
rdsv3_ib_get_mr_info(struct rdsv3_ib_device *rds_ibdev,
struct rds_info_rdma_connection *iinfo)
{
iinfo->rdma_mr_max = rds_ibdev->max_fmrs;
iinfo->rdma_mr_size = rds_ibdev->fmr_message_size;
}
void *
rdsv3_ib_get_mr(struct rds_iovec *args, unsigned long nents,
struct rdsv3_sock *rs, uint32_t *key_ret)
{
struct rdsv3_ib_device *rds_ibdev;
struct rdsv3_ib_mr *ibmr = NULL;
ddi_umem_cookie_t umem_cookie;
size_t umem_len;
caddr_t umem_addr;
int ret;
struct buf *bp;
RDSV3_DPRINTF4("rdsv3_ib_get_mr", "Enter: args.addr: %p", args->addr);
rds_ibdev = rdsv3_ib_get_device(rs->rs_bound_addr);
if (rds_ibdev == NULL)
return (void *)(PTR_ERR(-EFAULT));
ibmr = rdsv3_ib_alloc_fmr(rds_ibdev);
if (IS_ERR(ibmr))
return (ibmr);
/* pin user memory pages */
umem_len = ptob(btopr(args->bytes +
((uintptr_t)args->addr & PAGEOFFSET)));
umem_addr = (caddr_t)((uintptr_t)args->addr & ~PAGEOFFSET);
ret = umem_lockmemory(umem_addr, umem_len,
DDI_UMEMLOCK_WRITE | DDI_UMEMLOCK_READ,
&umem_cookie, NULL, NULL);
if (ret != 0) {
kmem_free((void *) ibmr, sizeof (*ibmr));
ibmr = ERR_PTR(-ret);
return (ibmr);
}
/* transpose umem_cookie to buf structure for rdsv3_ib_map_fmr() */
bp = ddi_umem_iosetup(umem_cookie, 0, umem_len,
B_WRITE, 0, 0, NULL, DDI_UMEM_SLEEP);
ret = rdsv3_ib_map_fmr(rds_ibdev, ibmr, bp, nents);
freerbuf(bp); /* free bp */
if (ret == 0) {
ibmr->umem_cookie = umem_cookie;
*key_ret = (uint32_t)ibmr->rc_mem_desc.pmd_rkey;
ibmr->m_device = rds_ibdev;
ibmr->m_pool = rds_ibdev->fmr_pool;
RDSV3_DPRINTF4("rdsv3_ib_get_mr",
"Return: ibmr: %p umem_cookie %p", ibmr, ibmr->umem_cookie);
return (ibmr);
} else { /* error return */
RDSV3_DPRINTF2("rdsv3_ib_get_mr", "map_fmr failed (errno=%d)\n",
ret);
ddi_umem_unlock(umem_cookie);
kmem_free((void *)ibmr, sizeof (*ibmr));
return (ERR_PTR(ret));
}
}
static struct rdsv3_ib_mr *
rdsv3_ib_alloc_fmr(struct rdsv3_ib_device *rds_ibdev)
{
struct rdsv3_ib_mr *ibmr;
RDSV3_DPRINTF4("rdsv3_ib_alloc_fmr", "Enter: ibdev: %p", rds_ibdev);
if (rds_ibdev->fmr_pool_hdl) {
ibmr = (struct rdsv3_ib_mr *)kmem_zalloc(sizeof (*ibmr),
KM_SLEEP);
ibmr->rc_hca_hdl = ib_get_ibt_hca_hdl(rds_ibdev->dev);
ibmr->fmr_pool_hdl = rds_ibdev->fmr_pool_hdl;
return (ibmr);
}
return (struct rdsv3_ib_mr *)(PTR_ERR(-ENOMEM));
}
static int
rdsv3_ib_map_fmr(struct rdsv3_ib_device *rds_ibdev, struct rdsv3_ib_mr *ibmr,
struct buf *bp, unsigned int nents)
{
ibt_va_attr_t va_attr;
ibt_reg_req_t reg_req;
uint_t paddr_list_len;
uint_t page_sz;
ibt_status_t ibt_status;
/* LINTED E_FUNC_SET_NOT_USED */
unsigned int l_nents = nents;
RDSV3_DPRINTF4("rdsv3_ib_map_fmr", "Enter: ibmr: %p", ibmr);
RDSV3_DPRINTF4("rdsv3_ib_map_fmr", "buf addr: %p", bp->b_un.b_addr);
/* setup ibt_map_mem_area attributes */
bzero(&va_attr, sizeof (ibt_va_attr_t));
va_attr.va_buf = bp;
va_attr.va_flags = IBT_VA_FMR | IBT_VA_BUF;
page_sz = rds_ibdev->hca_attr.hca_page_sz * 1024; /* in kbytes */
paddr_list_len = (bp->b_bcount / page_sz) + 2; /* start + end pg */
/* map user buffer to HCA address */
ibt_status = ibt_map_mem_area(ibmr->rc_hca_hdl,
&va_attr, paddr_list_len, ®_req, &ibmr->rc_ma_hdl);
if (ibt_status != IBT_SUCCESS) {
return (-ENOMEM);
}
/* use a free entry from FMR pool to register the specified memory */
ibt_status = ibt_register_physical_fmr(ibmr->rc_hca_hdl,
ibmr->fmr_pool_hdl,
®_req.fn_arg, &ibmr->rc_fmr_hdl, &ibmr->rc_mem_desc);
if (ibt_status != IBT_SUCCESS) {
RDSV3_DPRINTF2("rdsv3_ib_map_fmr", "reg_phy_fmr failed %d",
ibt_status);
(void) ibt_unmap_mem_area(ibmr->rc_hca_hdl,
ibmr->rc_ma_hdl);
if (ibt_status == IBT_INSUFF_RESOURCE) {
return (-ENOBUFS);
}
return (-EINVAL);
}
RDSV3_DPRINTF4("rdsv3_ib_map_fmr", "Return: ibmr: %p rkey: 0x%x",
ibmr, (uint32_t)ibmr->rc_mem_desc.pmd_rkey);
return (0);
}
void
rdsv3_ib_sync_mr(void *trans_private, int direction)
{
/* LINTED E_FUNC_SET_NOT_USED */
void *l_trans_private = trans_private;
/* LINTED E_FUNC_SET_NOT_USED */
int l_direction = direction;
/* FMR Sync not needed in Solaris on PCI-ex systems */
RDSV3_DPRINTF4("rdsv3_ib_sync_mr", "Enter:");
}
void
rdsv3_ib_flush_mrs(void)
{
struct rdsv3_ib_device *rds_ibdev;
RDSV3_DPRINTF4("rdsv3_ib_flush_mrs", "Enter:");
RDSV3_FOR_EACH_LIST_NODE(rds_ibdev, &rdsv3_ib_devices, list) {
if (rds_ibdev->fmr_pool_hdl) {
(void) rdsv3_ib_flush_mr_pool(rds_ibdev,
rds_ibdev->fmr_pool_hdl, 0);
}
}
}
static void
rdsv3_ib_drop_mr(struct rdsv3_ib_mr *ibmr)
{
/* return the fmr to the IBTF pool */
(void) ibt_deregister_fmr(ibmr->rc_hca_hdl, ibmr->rc_fmr_hdl);
(void) ibt_unmap_mem_area(ibmr->rc_hca_hdl, ibmr->rc_ma_hdl);
(void) ddi_umem_unlock(ibmr->umem_cookie);
kmem_free((void *) ibmr, sizeof (*ibmr));
}
void
rdsv3_ib_drain_mrlist_fn(void *data)
{
struct rdsv3_fmr_pool *pool = (struct rdsv3_fmr_pool *)data;
ibt_hca_hdl_t hca_hdl;
ibt_fmr_pool_hdl_t fmr_pool_hdl;
unsigned int inval;
struct rdsv3_ib_mr *ibmr;
list_t *listp = &pool->f_list;
kmutex_t *lockp = &pool->f_lock;
int i;
inval = 0;
i = 0;
for (;;) {
mutex_enter(lockp);
ibmr = (struct rdsv3_ib_mr *)list_remove_head(listp);
if (ibmr)
pool->f_listcnt--;
mutex_exit(lockp);
if (!ibmr)
break;
if ((inval == 0) && ibmr->m_inval) {
inval = 1;
hca_hdl = ibmr->rc_hca_hdl;
fmr_pool_hdl = ibmr->fmr_pool_hdl;
}
i++;
rdsv3_ib_drop_mr(ibmr);
}
if (inval)
(void) ibt_flush_fmr_pool(hca_hdl, fmr_pool_hdl);
}
void
rdsv3_ib_free_mr(void *trans_private, int invalidate)
{
struct rdsv3_ib_mr *ibmr = trans_private;
rdsv3_af_thr_t *af_thr;
RDSV3_DPRINTF4("rdsv3_ib_free_mr", "Enter: ibmr: %p inv: %d",
ibmr, invalidate);
/* save af_thr at local as ibmr might be freed at mutex_exit */
af_thr = ibmr->m_device->fmr_soft_cq;
ibmr->m_inval = (unsigned int) invalidate;
mutex_enter(&ibmr->m_pool->f_lock);
list_insert_tail(&ibmr->m_pool->f_list, ibmr);
ibmr->m_pool->f_listcnt++;
mutex_exit(&ibmr->m_pool->f_lock);
rdsv3_af_thr_fire(af_thr);
}
static int
rdsv3_ib_flush_mr_pool(struct rdsv3_ib_device *rds_ibdev,
ibt_fmr_pool_hdl_t pool_hdl, int free_all)
{
/* LINTED E_FUNC_SET_NOT_USED */
int l_free_all = free_all;
RDSV3_DPRINTF4("rdsv3_ib_flush_mr_pool", "Enter: pool: %p", pool_hdl);
rdsv3_ib_stats_inc(s_ib_rdma_mr_pool_flush);
(void) ibt_flush_fmr_pool(ib_get_ibt_hca_hdl(rds_ibdev->dev),
pool_hdl);
return (0);
}
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