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RDMA/nldev: provide detailed CQ information
Implement the RDMA nldev netlink interface for dumping detailed CQ information. Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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2 changed files with 60 additions and 0 deletions
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@ -80,6 +80,11 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
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.len = sizeof(struct __kernel_sockaddr_storage) },
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[RDMA_NLDEV_ATTR_RES_DST_ADDR] = {
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.len = sizeof(struct __kernel_sockaddr_storage) },
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[RDMA_NLDEV_ATTR_RES_CQ] = { .type = NLA_NESTED },
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[RDMA_NLDEV_ATTR_RES_CQ_ENTRY] = { .type = NLA_NESTED },
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[RDMA_NLDEV_ATTR_RES_CQE] = { .type = NLA_U32 },
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[RDMA_NLDEV_ATTR_RES_USECNT] = { .type = NLA_U64 },
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[RDMA_NLDEV_ATTR_RES_POLL_CTX] = { .type = NLA_U8 },
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};
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static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device)
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@ -359,6 +364,39 @@ static int fill_res_cm_id_entry(struct sk_buff *msg,
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return -EMSGSIZE;
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}
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static int fill_res_cq_entry(struct sk_buff *msg, struct netlink_callback *cb,
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struct rdma_restrack_entry *res, uint32_t port)
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{
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struct ib_cq *cq = container_of(res, struct ib_cq, res);
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struct nlattr *entry_attr;
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entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_CQ_ENTRY);
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if (!entry_attr)
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goto out;
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if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQE, cq->cqe))
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goto err;
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if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
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atomic_read(&cq->usecnt), 0))
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goto err;
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/* Poll context is only valid for kernel CQs */
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if (rdma_is_kernel_res(res) &&
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nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_POLL_CTX, cq->poll_ctx))
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goto err;
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if (fill_res_name_pid(msg, res))
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goto err;
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nla_nest_end(msg, entry_attr);
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return 0;
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err:
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nla_nest_cancel(msg, entry_attr);
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out:
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return -EMSGSIZE;
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}
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static int nldev_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
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struct netlink_ext_ack *extack)
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{
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@ -651,6 +689,11 @@ static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
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.nldev_cmd = RDMA_NLDEV_CMD_RES_CM_ID_GET,
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.nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID,
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},
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[RDMA_RESTRACK_CQ] = {
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.fill_res_func = fill_res_cq_entry,
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.nldev_cmd = RDMA_NLDEV_CMD_RES_CQ_GET,
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.nldev_attr = RDMA_NLDEV_ATTR_RES_CQ,
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},
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};
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static int res_get_common_dumpit(struct sk_buff *skb,
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@ -799,6 +842,12 @@ static int nldev_res_get_cm_id_dumpit(struct sk_buff *skb,
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return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_CM_ID);
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}
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static int nldev_res_get_cq_dumpit(struct sk_buff *skb,
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struct netlink_callback *cb)
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{
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return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_CQ);
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}
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static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
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[RDMA_NLDEV_CMD_GET] = {
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.doit = nldev_get_doit,
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@ -828,6 +877,9 @@ static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
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[RDMA_NLDEV_CMD_RES_CM_ID_GET] = {
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.dump = nldev_res_get_cm_id_dumpit,
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},
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[RDMA_NLDEV_CMD_RES_CQ_GET] = {
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.dump = nldev_res_get_cq_dumpit,
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},
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};
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void __init nldev_init(void)
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@ -240,6 +240,8 @@ enum rdma_nldev_command {
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RDMA_NLDEV_CMD_RES_CM_ID_GET, /* can dump */
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RDMA_NLDEV_CMD_RES_CQ_GET, /* can dump */
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RDMA_NLDEV_NUM_OPS
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};
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@ -364,6 +366,12 @@ enum rdma_nldev_attr {
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RDMA_NLDEV_ATTR_RES_SRC_ADDR, /* __kernel_sockaddr_storage */
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RDMA_NLDEV_ATTR_RES_DST_ADDR, /* __kernel_sockaddr_storage */
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RDMA_NLDEV_ATTR_RES_CQ, /* nested table */
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RDMA_NLDEV_ATTR_RES_CQ_ENTRY, /* nested table */
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RDMA_NLDEV_ATTR_RES_CQE, /* u32 */
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RDMA_NLDEV_ATTR_RES_USECNT, /* u64 */
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RDMA_NLDEV_ATTR_RES_POLL_CTX, /* u8 */
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RDMA_NLDEV_ATTR_MAX
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};
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#endif /* _UAPI_RDMA_NETLINK_H */
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