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IB/usnic: Add UDP support in usnic_ib_qp_grp.[hc] 

UDP support for qp_grps/qps.

Signed-off-by: Upinder Malhi <umalhi@cisco.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Upinder Malhi 2014-01-09 14:48:18 -08:00 committed by Roland Dreier
parent c7845bcafe
commit e45e614e40
2 changed files with 99 additions and 0 deletions
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88
drivers/infiniband/hw/usnic/usnic_ib_qp_grp.c
View File

@ -245,6 +245,80 @@ static void release_roce_custom_flow(struct usnic_ib_qp_grp_flow *qp_flow)
kfree(qp_flow);
}
static struct usnic_ib_qp_grp_flow*
create_udp_flow(struct usnic_ib_qp_grp *qp_grp,
struct usnic_transport_spec *trans_spec)
{
struct socket *sock;
int sock_fd;
int err;
struct filter filter;
struct usnic_filter_action uaction;
struct usnic_ib_qp_grp_flow *qp_flow;
struct usnic_fwd_flow *flow;
enum usnic_transport_type trans_type;
uint32_t addr;
uint16_t port_num;
int proto;
trans_type = trans_spec->trans_type;
sock_fd = trans_spec->udp.sock_fd;
/* Get and check socket */
sock = usnic_transport_get_socket(sock_fd);
if (IS_ERR_OR_NULL(sock))
return ERR_CAST(sock);
err = usnic_transport_sock_get_addr(sock, &proto, &addr, &port_num);
if (err)
goto out_put_sock;
if (proto != IPPROTO_UDP) {
usnic_err("Protocol for fd %d is not UDP", sock_fd);
err = -EPERM;
goto out_put_sock;
}
/* Create flow */
usnic_fwd_init_udp_filter(&filter, addr, port_num);
err = init_filter_action(qp_grp, &uaction);
if (err)
goto out_put_sock;
flow = usnic_fwd_alloc_flow(qp_grp->ufdev, &filter, &uaction);
if (IS_ERR_OR_NULL(flow)) {
usnic_err("Unable to alloc flow failed with err %ld\n",
PTR_ERR(flow));
err = (flow) ? PTR_ERR(flow) : -EFAULT;
goto out_put_sock;
}
/* Create qp_flow */
qp_flow = kzalloc(sizeof(*qp_flow), GFP_ATOMIC);
if (IS_ERR_OR_NULL(qp_flow)) {
err = (qp_flow) ? PTR_ERR(qp_flow) : -ENOMEM;
goto out_dealloc_flow;
}
qp_flow->flow = flow;
qp_flow->trans_type = trans_type;
qp_flow->udp.sock = sock;
qp_flow->qp_grp = qp_grp;
return qp_flow;
out_dealloc_flow:
usnic_fwd_dealloc_flow(flow);
out_put_sock:
usnic_transport_put_socket(sock);
return ERR_PTR(err);
}
static void release_udp_flow(struct usnic_ib_qp_grp_flow *qp_flow)
{
usnic_fwd_dealloc_flow(qp_flow->flow);
usnic_transport_put_socket(qp_flow->udp.sock);
kfree(qp_flow);
}
static struct usnic_ib_qp_grp_flow*
create_and_add_flow(struct usnic_ib_qp_grp *qp_grp,
struct usnic_transport_spec *trans_spec)
@ -257,6 +331,9 @@ create_and_add_flow(struct usnic_ib_qp_grp *qp_grp,
case USNIC_TRANSPORT_ROCE_CUSTOM:
qp_flow = create_roce_custom_flow(qp_grp, trans_spec);
break;
case USNIC_TRANSPORT_IPV4_UDP:
qp_flow = create_udp_flow(qp_grp, trans_spec);
break;
default:
usnic_err("Unsupported transport %u\n",
trans_spec->trans_type);
@ -278,6 +355,9 @@ static void release_and_remove_flow(struct usnic_ib_qp_grp_flow *qp_flow)
case USNIC_TRANSPORT_ROCE_CUSTOM:
release_roce_custom_flow(qp_flow);
break;
case USNIC_TRANSPORT_IPV4_UDP:
release_udp_flow(qp_flow);
break;
default:
WARN(1, "Unsupported transport %u\n",
qp_flow->trans_type);
@ -544,11 +624,19 @@ static int qp_grp_id_from_flow(struct usnic_ib_qp_grp_flow *qp_flow,
uint32_t *id)
{
enum usnic_transport_type trans_type = qp_flow->trans_type;
int err;
switch (trans_type) {
case USNIC_TRANSPORT_ROCE_CUSTOM:
*id = qp_flow->usnic_roce.port_num;
break;
case USNIC_TRANSPORT_IPV4_UDP:
err = usnic_transport_sock_get_addr(qp_flow->udp.sock,
NULL, NULL,
(uint16_t *) id);
if (err)
return err;
break;
default:
usnic_err("Unsupported transport %u\n", trans_type);
return -EINVAL;

11
drivers/infiniband/hw/usnic/usnic_ib_qp_grp.h
View File

@ -56,6 +56,9 @@ struct usnic_ib_qp_grp_flow {
struct {
uint16_t port_num;
} usnic_roce;
struct {
struct socket *sock;
} udp;
};
struct usnic_ib_qp_grp *qp_grp;
struct list_head link;
@ -76,6 +79,14 @@ usnic_vnic_res_spec min_transport_spec[USNIC_TRANSPORT_MAX] = {
{.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,},
},
},
{ /*USNIC_TRANSPORT_IPV4_UDP*/
.resources = {
{.type = USNIC_VNIC_RES_TYPE_WQ, .cnt = 1,},
{.type = USNIC_VNIC_RES_TYPE_RQ, .cnt = 1,},
{.type = USNIC_VNIC_RES_TYPE_CQ, .cnt = 1,},
{.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,},
},
},
};
const char *usnic_ib_qp_grp_state_to_string(enum ib_qp_state state);