diff options
author | Kamal Heib <kamalheib1@gmail.com> | 2020-07-21 12:16:18 +0200 |
---|---|---|
committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-07-31 21:17:56 +0200 |
commit | 76251e15ea73898b62ed0da3210189e50e1fe3c9 (patch) | |
tree | feafb95183f04bc25074b574a535888ed0ab7e42 /drivers/infiniband | |
parent | RDMA/umem: Add a schedule point in ib_umem_get() (diff) | |
download | linux-76251e15ea73898b62ed0da3210189e50e1fe3c9.tar.xz linux-76251e15ea73898b62ed0da3210189e50e1fe3c9.zip |
RDMA/rxe: Remove pkey table
The RoCE spec requires RoCE devices to support only the default pkey.
However the rxe driver maintains a 64 enties pkey table and uses only the
first entry. Remove the pkey table and hard code a table of length one
hard wired with the default pkey. Replace all checks of the pkey_table
with a comparison to the default_pkey instead.
Link: https://lore.kernel.org/r/20200721101618.686110-1-kamalheib1@gmail.com
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r-- | drivers/infiniband/sw/rxe/rxe.c | 34 | ||||
-rw-r--r-- | drivers/infiniband/sw/rxe/rxe_param.h | 4 | ||||
-rw-r--r-- | drivers/infiniband/sw/rxe/rxe_recv.c | 29 | ||||
-rw-r--r-- | drivers/infiniband/sw/rxe/rxe_req.c | 5 | ||||
-rw-r--r-- | drivers/infiniband/sw/rxe/rxe_verbs.c | 17 | ||||
-rw-r--r-- | drivers/infiniband/sw/rxe/rxe_verbs.h | 1 |
6 files changed, 13 insertions, 77 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe.c b/drivers/infiniband/sw/rxe/rxe.c index efcb72c92be6..907203afbd99 100644 --- a/drivers/infiniband/sw/rxe/rxe.c +++ b/drivers/infiniband/sw/rxe/rxe.c @@ -40,14 +40,6 @@ MODULE_AUTHOR("Bob Pearson, Frank Zago, John Groves, Kamal Heib"); MODULE_DESCRIPTION("Soft RDMA transport"); MODULE_LICENSE("Dual BSD/GPL"); -/* free resources for all ports on a device */ -static void rxe_cleanup_ports(struct rxe_dev *rxe) -{ - kfree(rxe->port.pkey_tbl); - rxe->port.pkey_tbl = NULL; - -} - /* free resources for a rxe device all objects created for this device must * have been destroyed */ @@ -66,8 +58,6 @@ void rxe_dealloc(struct ib_device *ib_dev) rxe_pool_cleanup(&rxe->mc_grp_pool); rxe_pool_cleanup(&rxe->mc_elem_pool); - rxe_cleanup_ports(rxe); - if (rxe->tfm) crypto_free_shash(rxe->tfm); } @@ -139,25 +129,14 @@ static void rxe_init_port_param(struct rxe_port *port) /* initialize port state, note IB convention that HCA ports are always * numbered from 1 */ -static int rxe_init_ports(struct rxe_dev *rxe) +static void rxe_init_ports(struct rxe_dev *rxe) { struct rxe_port *port = &rxe->port; rxe_init_port_param(port); - - port->pkey_tbl = kcalloc(port->attr.pkey_tbl_len, - sizeof(*port->pkey_tbl), GFP_KERNEL); - - if (!port->pkey_tbl) - return -ENOMEM; - - port->pkey_tbl[0] = 0xffff; addrconf_addr_eui48((unsigned char *)&port->port_guid, rxe->ndev->dev_addr); - spin_lock_init(&port->port_lock); - - return 0; } /* init pools of managed objects */ @@ -247,13 +226,11 @@ static int rxe_init(struct rxe_dev *rxe) /* init default device parameters */ rxe_init_device_param(rxe); - err = rxe_init_ports(rxe); - if (err) - goto err1; + rxe_init_ports(rxe); err = rxe_init_pools(rxe); if (err) - goto err2; + return err; /* init pending mmap list */ spin_lock_init(&rxe->mmap_offset_lock); @@ -263,11 +240,6 @@ static int rxe_init(struct rxe_dev *rxe) mutex_init(&rxe->usdev_lock); return 0; - -err2: - rxe_cleanup_ports(rxe); -err1: - return err; } void rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu) diff --git a/drivers/infiniband/sw/rxe/rxe_param.h b/drivers/infiniband/sw/rxe/rxe_param.h index 99e9d8ba9767..2f381aeafcb5 100644 --- a/drivers/infiniband/sw/rxe/rxe_param.h +++ b/drivers/infiniband/sw/rxe/rxe_param.h @@ -100,7 +100,7 @@ enum rxe_device_param { RXE_MAX_SRQ_SGE = 27, RXE_MIN_SRQ_SGE = 1, RXE_MAX_FMR_PAGE_LIST_LEN = 512, - RXE_MAX_PKEYS = 64, + RXE_MAX_PKEYS = 1, RXE_LOCAL_CA_ACK_DELAY = 15, RXE_MAX_UCONTEXT = 512, @@ -148,7 +148,7 @@ enum rxe_port_param { RXE_PORT_INIT_TYPE_REPLY = 0, RXE_PORT_ACTIVE_WIDTH = IB_WIDTH_1X, RXE_PORT_ACTIVE_SPEED = 1, - RXE_PORT_PKEY_TBL_LEN = 64, + RXE_PORT_PKEY_TBL_LEN = 1, RXE_PORT_PHYS_STATE = IB_PORT_PHYS_STATE_POLLING, RXE_PORT_SUBNET_PREFIX = 0xfe80000000000000ULL, }; diff --git a/drivers/infiniband/sw/rxe/rxe_recv.c b/drivers/infiniband/sw/rxe/rxe_recv.c index 46e111c218fd..7e123d3c4d09 100644 --- a/drivers/infiniband/sw/rxe/rxe_recv.c +++ b/drivers/infiniband/sw/rxe/rxe_recv.c @@ -101,36 +101,15 @@ static void set_qkey_viol_cntr(struct rxe_port *port) static int check_keys(struct rxe_dev *rxe, struct rxe_pkt_info *pkt, u32 qpn, struct rxe_qp *qp) { - int i; - int found_pkey = 0; struct rxe_port *port = &rxe->port; u16 pkey = bth_pkey(pkt); pkt->pkey_index = 0; - if (qpn == 1) { - for (i = 0; i < port->attr.pkey_tbl_len; i++) { - if (pkey_match(pkey, port->pkey_tbl[i])) { - pkt->pkey_index = i; - found_pkey = 1; - break; - } - } - - if (!found_pkey) { - pr_warn_ratelimited("bad pkey = 0x%x\n", pkey); - set_bad_pkey_cntr(port); - goto err1; - } - } else { - if (unlikely(!pkey_match(pkey, - port->pkey_tbl[qp->attr.pkey_index] - ))) { - pr_warn_ratelimited("bad pkey = 0x%0x\n", pkey); - set_bad_pkey_cntr(port); - goto err1; - } - pkt->pkey_index = qp->attr.pkey_index; + if (!pkey_match(pkey, IB_DEFAULT_PKEY_FULL)) { + pr_warn_ratelimited("bad pkey = 0x%x\n", pkey); + set_bad_pkey_cntr(port); + goto err1; } if ((qp_type(qp) == IB_QPT_UD || qp_type(qp) == IB_QPT_GSI) && diff --git a/drivers/infiniband/sw/rxe/rxe_req.c b/drivers/infiniband/sw/rxe/rxe_req.c index e5031172c019..34df2b55e650 100644 --- a/drivers/infiniband/sw/rxe/rxe_req.c +++ b/drivers/infiniband/sw/rxe/rxe_req.c @@ -381,7 +381,6 @@ static struct sk_buff *init_req_packet(struct rxe_qp *qp, struct rxe_pkt_info *pkt) { struct rxe_dev *rxe = to_rdev(qp->ibqp.device); - struct rxe_port *port = &rxe->port; struct sk_buff *skb; struct rxe_send_wr *ibwr = &wqe->wr; struct rxe_av *av; @@ -419,9 +418,7 @@ static struct sk_buff *init_req_packet(struct rxe_qp *qp, (pkt->mask & (RXE_WRITE_MASK | RXE_IMMDT_MASK)) == (RXE_WRITE_MASK | RXE_IMMDT_MASK)); - pkey = (qp_type(qp) == IB_QPT_GSI) ? - port->pkey_tbl[ibwr->wr.ud.pkey_index] : - port->pkey_tbl[qp->attr.pkey_index]; + pkey = IB_DEFAULT_PKEY_FULL; qp_num = (pkt->mask & RXE_DETH_MASK) ? ibwr->wr.ud.remote_qpn : qp->attr.dest_qp_num; diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c index c1649aec8c23..bb61e534e468 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.c +++ b/drivers/infiniband/sw/rxe/rxe_verbs.c @@ -83,22 +83,11 @@ static int rxe_query_port(struct ib_device *dev, static int rxe_query_pkey(struct ib_device *device, u8 port_num, u16 index, u16 *pkey) { - struct rxe_dev *rxe = to_rdev(device); - struct rxe_port *port; - - port = &rxe->port; - - if (unlikely(index >= port->attr.pkey_tbl_len)) { - dev_warn(device->dev.parent, "invalid index = %d\n", - index); - goto err1; - } + if (index > 0) + return -EINVAL; - *pkey = port->pkey_tbl[index]; + *pkey = IB_DEFAULT_PKEY_FULL; return 0; - -err1: - return -EINVAL; } static int rxe_modify_device(struct ib_device *dev, diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.h b/drivers/infiniband/sw/rxe/rxe_verbs.h index 92de39c4a7c1..c664c7f36ab5 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.h +++ b/drivers/infiniband/sw/rxe/rxe_verbs.h @@ -371,7 +371,6 @@ struct rxe_mc_elem { struct rxe_port { struct ib_port_attr attr; - u16 *pkey_tbl; __be64 port_guid; __be64 subnet_prefix; spinlock_t port_lock; /* guard port */ |