1 files changed, 284 insertions, 0 deletions
diff --git a/rdma/res-srq.c b/rdma/res-srq.c
new file mode 100644
index 0000000..186ae28
--- /dev/null
+++ b/rdma/res-srq.c
@@ -0,0 +1,284 @@
+// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
+/*
+ * res-srq.c	RDMA tool
+ * Authors:     Neta Ostrovsky <netao@nvidia.com>
+ */
+
+#include "res.h"
+#include <inttypes.h>
+
+#define MAX_QP_STR_LEN 256
+
+static const char *srq_types_to_str(uint8_t idx)
+{
+	static const char *const srq_types_str[] = { "BASIC",
+						     "XRC",
+						     "TM" };
+
+	if (idx < ARRAY_SIZE(srq_types_str))
+		return srq_types_str[idx];
+	return "UNKNOWN";
+}
+
+static void print_type(struct rd *rd, uint32_t val)
+{
+	print_color_string(PRINT_ANY, COLOR_NONE, "type", "type %s ",
+			   srq_types_to_str(val));
+}
+
+static void print_qps(char *qp_str)
+{
+	char *qpn;
+
+	if (!strlen(qp_str))
+		return;
+
+	open_json_array(PRINT_ANY, "lqpn");
+	print_color_string(PRINT_FP, COLOR_NONE, NULL, " ", NULL);
+	qpn = strtok(qp_str, ",");
+	while (qpn) {
+		print_color_string(PRINT_ANY, COLOR_NONE, NULL, "%s", qpn);
+		qpn = strtok(NULL, ",");
+		if (qpn)
+			print_color_string(PRINT_FP, COLOR_NONE, NULL, ",", NULL);
+	}
+	print_color_string(PRINT_FP, COLOR_NONE, NULL, " ", NULL);
+	close_json_array(PRINT_JSON, NULL);
+}
+
+static int filter_srq_range_qps(struct rd *rd, struct nlattr **qp_line,
+				uint32_t min_range, uint32_t max_range,
+				char **delimiter, char *qp_str)
+{
+	uint32_t qpn = 0, tmp_min_range = 0, tmp_max_range = 0;
+	char tmp[16] = {};
+
+	for (qpn = min_range; qpn <= max_range; qpn++) {
+		if (rd_is_filtered_attr(rd, "lqpn", qpn,
+				qp_line[RDMA_NLDEV_ATTR_MIN_RANGE])) {
+			/* The QPs range contains a LQPN that is filtered */
+			if (!tmp_min_range)
+				/* There are no QPs previous to
+				 * the filtered one
+				 */
+				continue;
+			if (!tmp_max_range)
+				snprintf(tmp, sizeof(tmp), "%s%d", *delimiter,
+					 tmp_min_range);
+			else
+				snprintf(tmp, sizeof(tmp), "%s%d-%d",
+					 *delimiter, tmp_min_range,
+					 tmp_max_range);
+
+			strncat(qp_str, tmp,
+				MAX_QP_STR_LEN - strlen(qp_str) - 1);
+
+			memset(tmp, 0, strlen(tmp));
+			*delimiter = ",";
+			tmp_min_range = 0;
+			tmp_max_range = 0;
+			continue;
+		}
+		if (!tmp_min_range)
+			tmp_min_range = qpn;
+		else
+			tmp_max_range = qpn;
+	}
+
+	if (!tmp_min_range)
+		return 0;
+	if (!tmp_max_range)
+		snprintf(tmp, sizeof(tmp), "%s%d", *delimiter, tmp_min_range);
+	else
+		snprintf(tmp, sizeof(tmp), "%s%d-%d", *delimiter,
+			 tmp_min_range, tmp_max_range);
+
+	strncat(qp_str, tmp, MAX_QP_STR_LEN - strlen(qp_str) - 1);
+	*delimiter = ",";
+	return 0;
+}
+
+static int get_srq_qps(struct rd *rd, struct nlattr *qp_table,  char *qp_str)
+{
+	uint32_t qpn = 0, min_range = 0, max_range = 0;
+	struct nlattr *nla_entry;
+	struct filter_entry *fe;
+	char *delimiter = "";
+	char tmp[16] = {};
+
+	if (!qp_table)
+		return MNL_CB_ERROR;
+
+	/* If there are no QPs associated with the SRQ, return */
+	if (!(mnl_attr_get_payload_len(qp_table))) {
+		list_for_each_entry(fe, &rd->filter_list, list) {
+			if (!strcmpx(fe->key, "lqpn"))
+				/* We found the key -
+				 * user requested to filter by LQPN
+				 */
+				return -EINVAL;
+		}
+		return MNL_CB_OK;
+	}
+
+	mnl_attr_for_each_nested(nla_entry, qp_table) {
+		struct nlattr *qp_line[RDMA_NLDEV_ATTR_MAX] = {};
+
+		if (mnl_attr_parse_nested(nla_entry, rd_attr_cb, qp_line) !=
+		    MNL_CB_OK)
+			goto out;
+
+		if (qp_line[RDMA_NLDEV_ATTR_RES_LQPN]) {
+			qpn = mnl_attr_get_u32(qp_line[RDMA_NLDEV_ATTR_RES_LQPN]);
+			if (rd_is_filtered_attr(rd, "lqpn", qpn,
+					qp_line[RDMA_NLDEV_ATTR_RES_LQPN]))
+				continue;
+			snprintf(tmp, sizeof(tmp), "%s%d", delimiter, qpn);
+			strncat(qp_str, tmp,
+				MAX_QP_STR_LEN - strlen(qp_str) - 1);
+			delimiter = ",";
+		} else if (qp_line[RDMA_NLDEV_ATTR_MIN_RANGE] &&
+			   qp_line[RDMA_NLDEV_ATTR_MAX_RANGE]) {
+			min_range = mnl_attr_get_u32(qp_line[RDMA_NLDEV_ATTR_MIN_RANGE]);
+			max_range = mnl_attr_get_u32(qp_line[RDMA_NLDEV_ATTR_MAX_RANGE]);
+
+			if (filter_srq_range_qps(rd, qp_line, min_range,
+						 max_range, &delimiter,
+						 qp_str))
+				goto out;
+		} else {
+			goto out;
+		}
+	}
+
+	if (!strlen(qp_str))
+		/* Check if there are no QPs to display after filter */
+		goto out;
+
+	return MNL_CB_OK;
+
+out:
+	memset(qp_str, 0, strlen(qp_str));
+	return -EINVAL;
+}
+
+static int res_srq_line(struct rd *rd, const char *name, int idx,
+			struct nlattr **nla_line)
+{
+	uint32_t srqn = 0, pid = 0, pdn = 0, cqn = 0;
+	char qp_str[MAX_QP_STR_LEN] = {};
+	char *comm = NULL;
+	uint8_t type = 0;
+
+	if (!nla_line[RDMA_NLDEV_ATTR_RES_SRQN])
+		return MNL_CB_ERROR;
+
+	if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
+		SPRINT_BUF(b);
+
+		pid = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PID]);
+		if (!get_task_name(pid, b, sizeof(b)))
+			comm = b;
+	} else if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]) {
+		/* discard const from mnl_attr_get_str */
+		comm = (char *)mnl_attr_get_str(
+			nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
+	}
+
+	if (rd_is_filtered_attr(rd, "pid", pid,
+				nla_line[RDMA_NLDEV_ATTR_RES_PID]))
+		goto out;
+
+	if (nla_line[RDMA_NLDEV_ATTR_RES_SRQN])
+		srqn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_SRQN]);
+	if (rd_is_filtered_attr(rd, "srqn", srqn,
+				nla_line[RDMA_NLDEV_ATTR_RES_SRQN]))
+		goto out;
+
+	if (nla_line[RDMA_NLDEV_ATTR_RES_TYPE])
+		type = mnl_attr_get_u8(nla_line[RDMA_NLDEV_ATTR_RES_TYPE]);
+	if (rd_is_string_filtered_attr(rd, "type", srq_types_to_str(type),
+				       nla_line[RDMA_NLDEV_ATTR_RES_TYPE]))
+		goto out;
+
+	if (nla_line[RDMA_NLDEV_ATTR_RES_PDN])
+		pdn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
+	if (rd_is_filtered_attr(rd, "pdn", pdn,
+				nla_line[RDMA_NLDEV_ATTR_RES_PDN]))
+		goto out;
+
+	if (nla_line[RDMA_NLDEV_ATTR_RES_CQN])
+		cqn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CQN]);
+	if (rd_is_filtered_attr(rd, "cqn", cqn,
+				nla_line[RDMA_NLDEV_ATTR_RES_CQN]))
+		goto out;
+
+	if (get_srq_qps(rd, nla_line[RDMA_NLDEV_ATTR_RES_QP], qp_str) !=
+			MNL_CB_OK)
+		goto out;
+
+	open_json_object(NULL);
+	print_dev(rd, idx, name);
+	res_print_u32(rd, "srqn", srqn, nla_line[RDMA_NLDEV_ATTR_RES_SRQN]);
+	print_type(rd, type);
+	print_qps(qp_str);
+	res_print_u32(rd, "pdn", pdn, nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
+	res_print_u32(rd, "cqn", cqn, nla_line[RDMA_NLDEV_ATTR_RES_CQN]);
+	res_print_u32(rd, "pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);
+	print_comm(rd, comm, nla_line);
+
+	print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
+	newline(rd);
+
+out:
+	return MNL_CB_OK;
+}
+
+int res_srq_idx_parse_cb(const struct nlmsghdr *nlh, void *data)
+{
+	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
+	struct rd *rd = data;
+	const char *name;
+	uint32_t idx;
+
+	mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
+	if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME])
+		return MNL_CB_ERROR;
+
+	name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
+	idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
+
+	return res_srq_line(rd, name, idx, tb);
+}
+
+int res_srq_parse_cb(const struct nlmsghdr *nlh, void *data)
+{
+	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
+	struct nlattr *nla_table, *nla_entry;
+	struct rd *rd = data;
+	int ret = MNL_CB_OK;
+	const char *name;
+	uint32_t idx;
+
+	mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
+	if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
+	    !tb[RDMA_NLDEV_ATTR_RES_SRQ])
+		return MNL_CB_ERROR;
+
+	name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
+	idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
+	nla_table = tb[RDMA_NLDEV_ATTR_RES_SRQ];
+
+	mnl_attr_for_each_nested(nla_entry, nla_table) {
+		struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
+
+		ret = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
+		if (ret != MNL_CB_OK)
+			break;
+
+		ret = res_srq_line(rd, name, idx, nla_line);
+		if (ret != MNL_CB_OK)
+			break;
+	}
+	return ret;
+}