From mboxrd@z Thu Jan 1 00:00:00 1970 From: Leon Romanovsky Subject: [PATCH rdma-next V1 17/19] RDMA/netlink: Add nldev port dumpit implementation Date: Thu, 22 Jun 2017 16:24:32 +0300 Message-ID: <20170622132434.1327-18-leon@kernel.org> References: <20170622132434.1327-1-leon@kernel.org> Return-path: In-Reply-To: <20170622132434.1327-1-leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Doug Ledford Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Chien Tin Tung , Steve Wise , Stephen Hemminger , Jason Gunthorpe , Jiri Pirko , Ariel Almog , Linux Netdev , Leon Romanovsky List-Id: linux-rdma@vger.kernel.org From: Leon Romanovsky This patch implements the query interface to get all ports data for the specific device. Signed-off-by: Leon Romanovsky Reviewed-by: Steve Wise --- drivers/infiniband/core/nldev.c | 61 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c index 666940f2b49a..4413eda8c435 100644 --- a/drivers/infiniband/core/nldev.c +++ b/drivers/infiniband/core/nldev.c @@ -53,6 +53,18 @@ static int fill_dev_info(struct sk_buff *msg, struct ib_device *device) return 0; } +static int fill_port_info(struct sk_buff *msg, + struct ib_device *device, u32 port) +{ + if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DEV_INDEX, device->index)) + return -EMSGSIZE; + if (nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_NAME, device->name)) + return -EMSGSIZE; + if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) + return -EMSGSIZE; + return 0; +} + static int nldev_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, struct netlink_ext_ack *extack) { @@ -129,11 +141,60 @@ static int nldev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) return ib_enum_all_devs(_nldev_get_dumpit, skb, cb); } +static int nldev_port_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb) +{ + struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; + struct ib_device *device; + int start = cb->args[0]; + struct nlmsghdr *nlh; + u32 idx = 0; + u32 ifindex; + int err; + u32 p; + + err = nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, + nldev_policy, NULL); + if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) + return -EINVAL; + + ifindex = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); + device = __ib_device_get_by_index(ifindex); + if (!device) + return -EINVAL; + + for (p = rdma_start_port(device); p <= rdma_end_port(device); ++p) { + if (idx < start) { + idx++; + continue; + } + + nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, + RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, + RDMA_NLDEV_CMD_PORT_GET), + 0, NLM_F_MULTI); + + if (fill_port_info(skb, device, p)) { + nlmsg_cancel(skb, nlh); + goto out; + } + idx++; + nlmsg_end(skb, nlh); + } + +out: cb->args[0] = idx; + return skb->len; +} + static const struct rdma_nl_cbs nldev_cb_table[] = { [RDMA_NLDEV_CMD_GET] = { .doit = nldev_get_doit, .dump = nldev_get_dumpit, }, + [RDMA_NLDEV_CMD_PORT_GET] = { + .dump = nldev_port_get_dumpit, + }, }; void __init nldev_init(void) -- 2.13.1 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html