Commit f595cf12 authored by Bongsu Jeon's avatar Bongsu Jeon Committed by Jakub Kicinski
Browse files

selftests: Add nci suite 



This is the NCI test suite. It tests the NFC/NCI module using virtual NCI
device. Test cases consist of making the virtual NCI device on/off and
controlling the device's polling for NCI1.0 and NCI2.0 version.

Signed-off-by: default avatarBongsu Jeon <bongsu.jeon@samsung.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent e624e6c3

MAINTAINERS

+8 −0
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@@ -12540,6 +12540,14 @@ F: include/net/nfc/ 
F:	include/uapi/linux/nfc.h

F:	net/nfc/









NFC VIRTUAL NCI DEVICE DRIVER









M:	Bongsu Jeon <bongsu.jeon@samsung.com>









L:	netdev@vger.kernel.org









L:	linux-nfc@lists.01.org (moderated for non-subscribers)









S:	Supported









F:	drivers/nfc/virtual_ncidev.c









F:	tools/testing/selftests/nci/

















NFS, SUNRPC, AND LOCKD CLIENTS









M:	Trond Myklebust <trond.myklebust@hammerspace.com>









M:	Anna Schumaker <anna.schumaker@netapp.com>
































tools/testing/selftests/Makefile



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@@ -34,6 +34,7 @@ TARGETS += memory-hotplug







TARGETS += mincore









TARGETS += mount









TARGETS += mqueue









TARGETS += nci









TARGETS += net









TARGETS += net/forwarding









TARGETS += net/mptcp
































tools/testing/selftests/nci/Makefile
0 → 100644



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# SPDX-License-Identifier: GPL-2.0









CFLAGS += -Wl,-no-as-needed -Wall









LDFLAGS += -lpthread



















TEST_GEN_PROGS := nci_dev









include ../lib.mk
























tools/testing/selftests/nci/config
0 → 100644



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CONFIG_NFC=y









CONFIG_NFC_NCI=y









CONFIG_NFC_VIRTUAL_NCI=y
























tools/testing/selftests/nci/nci_dev.c
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// SPDX-License-Identifier: GPL-2.0-only









/*









 * Copyright (C) 2021 Samsung Electrnoics









 * Bongsu Jeon <bongsu.jeon@samsung.com>









 *









 * Test code for nci









 */



















#include <stdlib.h>









#include <errno.h>









#include <string.h>









#include <sys/ioctl.h>









#include <fcntl.h>









#include <pthread.h>









#include <linux/genetlink.h>









#include <sys/socket.h>









#include <linux/nfc.h>



















#include "../kselftest_harness.h"



















#define GENLMSG_DATA(glh)	((void *)(NLMSG_DATA(glh) + GENL_HDRLEN))









#define GENLMSG_PAYLOAD(glh)	(NLMSG_PAYLOAD(glh, 0) - GENL_HDRLEN)









#define NLA_DATA(na)		((void *)((char *)(na) + NLA_HDRLEN))









#define NLA_PAYLOAD(len)	((len) - NLA_HDRLEN)



















#define MAX_MSG_SIZE	1024



















#define IOCTL_GET_NCIDEV_IDX	0









#define VIRTUAL_NFC_PROTOCOLS	(NFC_PROTO_JEWEL_MASK | \









				 NFC_PROTO_MIFARE_MASK | \









				 NFC_PROTO_FELICA_MASK | \









				 NFC_PROTO_ISO14443_MASK | \









				 NFC_PROTO_ISO14443_B_MASK | \









				 NFC_PROTO_ISO15693_MASK)



















const __u8 nci_reset_cmd[] = {0x20, 0x00, 0x01, 0x01};









const __u8 nci_init_cmd[] = {0x20, 0x01, 0x00};









const __u8 nci_rf_discovery_cmd[] = {0x21, 0x03, 0x09, 0x04, 0x00, 0x01,









				      0x01, 0x01, 0x02, 0x01, 0x06, 0x01};









const __u8 nci_init_cmd_v2[] = {0x20, 0x01, 0x02, 0x00, 0x00};









const __u8 nci_rf_disc_map_cmd[] = {0x21, 0x00, 0x07, 0x02, 0x04, 0x03,









				     0x02, 0x05, 0x03, 0x03};









const __u8 nci_rf_deact_cmd[] = {0x21, 0x06, 0x01, 0x00};









const __u8 nci_reset_rsp[] = {0x40, 0x00, 0x03, 0x00, 0x10, 0x01};









const __u8 nci_reset_rsp_v2[] = {0x40, 0x00, 0x01, 0x00};









const __u8 nci_reset_ntf[] = {0x60, 0x00, 0x09, 0x02, 0x01, 0x20, 0x0e,









			       0x04, 0x61, 0x00, 0x04, 0x02};









const __u8 nci_init_rsp[] = {0x40, 0x01, 0x14, 0x00, 0x02, 0x0e, 0x02,









			      0x00, 0x03, 0x01, 0x02, 0x03, 0x02, 0xc8,









			      0x00, 0xff, 0x10, 0x00, 0x0e, 0x12, 0x00,









			      0x00, 0x04};









const __u8 nci_init_rsp_v2[] = {0x40, 0x01, 0x1c, 0x00, 0x1a, 0x7e, 0x06,









				 0x00, 0x02, 0x92, 0x04, 0xff, 0xff, 0x01,









				 0x00, 0x40, 0x06, 0x00, 0x00, 0x01, 0x01,









				 0x00, 0x02, 0x00, 0x03, 0x01, 0x01, 0x06,









				 0x00, 0x80, 0x00};









const __u8 nci_rf_disc_map_rsp[] = {0x41, 0x00, 0x01, 0x00};









const __u8 nci_rf_disc_rsp[] = {0x41, 0x03, 0x01, 0x00};









const __u8 nci_rf_deact_rsp[] = {0x41, 0x06, 0x01, 0x00};



















struct msgtemplate {









	struct nlmsghdr n;









	struct genlmsghdr g;









	char buf[MAX_MSG_SIZE];









};



















static int create_nl_socket(void)









{









	int fd;









	struct sockaddr_nl local;



















	fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);









	if (fd < 0)









		return -1;



















	memset(&local, 0, sizeof(local));









	local.nl_family = AF_NETLINK;



















	if (bind(fd, (struct sockaddr *)&local, sizeof(local)) < 0)









		goto error;



















	return fd;









error:









	close(fd);









	return -1;









}



















static int send_cmd_mt_nla(int sd, __u16 nlmsg_type, __u32 nlmsg_pid,









			   __u8 genl_cmd, int nla_num, __u16 nla_type[],









			   void *nla_data[], int nla_len[])









{









	struct sockaddr_nl nladdr;









	struct msgtemplate msg;









	struct nlattr *na;









	int cnt, prv_len;









	int r, buflen;









	char *buf;



















	msg.n.nlmsg_len = NLMSG_LENGTH(GENL_HDRLEN);









	msg.n.nlmsg_type = nlmsg_type;









	msg.n.nlmsg_flags = NLM_F_REQUEST;









	msg.n.nlmsg_seq = 0;









	msg.n.nlmsg_pid = nlmsg_pid;









	msg.g.cmd = genl_cmd;









	msg.g.version = 0x1;



















	prv_len = 0;









	for (cnt = 0; cnt < nla_num; cnt++) {









		na = (struct nlattr *)(GENLMSG_DATA(&msg) + prv_len);









		na->nla_type = nla_type[cnt];









		na->nla_len = nla_len[cnt] + NLA_HDRLEN;



















		if (nla_len > 0)









			memcpy(NLA_DATA(na), nla_data[cnt], nla_len[cnt]);



















		msg.n.nlmsg_len += NLMSG_ALIGN(na->nla_len);









		prv_len = na->nla_len;









	}



















	buf = (char *)&msg;









	buflen = msg.n.nlmsg_len;









	memset(&nladdr, 0, sizeof(nladdr));









	nladdr.nl_family = AF_NETLINK;



















	while ((r = sendto(sd, buf, buflen, 0, (struct sockaddr *)&nladdr,









			   sizeof(nladdr))) < buflen) {









		if (r > 0) {









			buf += r;









			buflen -= r;









		} else if (errno != EAGAIN) {









			return -1;









		}









	}









	return 0;









}



















static int send_get_nfc_family(int sd, __u32 pid)









{









	__u16 nla_get_family_type = CTRL_ATTR_FAMILY_NAME;









	void *nla_get_family_data;









	int nla_get_family_len;









	char family_name[100];



















	nla_get_family_len = strlen(NFC_GENL_NAME) + 1;









	strcpy(family_name, NFC_GENL_NAME);









	nla_get_family_data = family_name;



















	return send_cmd_mt_nla(sd, GENL_ID_CTRL, pid, CTRL_CMD_GETFAMILY,









				1, &nla_get_family_type,









				&nla_get_family_data, &nla_get_family_len);









}



















static int get_family_id(int sd, __u32 pid)









{









	struct {









		struct nlmsghdr n;









		struct genlmsghdr g;









		char buf[512];









	} ans;









	struct nlattr *na;









	int rep_len;









	__u16 id;









	int rc;



















	rc = send_get_nfc_family(sd, pid);



















	if (rc < 0)









		return 0;



















	rep_len = recv(sd, &ans, sizeof(ans), 0);



















	if (ans.n.nlmsg_type == NLMSG_ERROR || rep_len < 0 ||









	    !NLMSG_OK(&ans.n, rep_len))









		return 0;



















	na = (struct nlattr *)GENLMSG_DATA(&ans);









	na = (struct nlattr *)((char *)na + NLA_ALIGN(na->nla_len));









	if (na->nla_type == CTRL_ATTR_FAMILY_ID)









		id = *(__u16 *)NLA_DATA(na);



















	return id;









}



















static int send_cmd_with_idx(int sd, __u16 nlmsg_type, __u32 nlmsg_pid,









			     __u8 genl_cmd, int dev_id)









{









	__u16 nla_type = NFC_ATTR_DEVICE_INDEX;









	void *nla_data = &dev_id;









	int nla_len = 4;



















	return send_cmd_mt_nla(sd, nlmsg_type, nlmsg_pid, genl_cmd, 1,









				&nla_type, &nla_data, &nla_len);









}



















static int get_nci_devid(int sd, __u16 fid, __u32 pid, int dev_id, struct msgtemplate *msg)









{









	int rc, rep_len;



















	rc = send_cmd_with_idx(sd, fid, pid, NFC_CMD_GET_DEVICE, dev_id);









	if (rc < 0) {









		rc = -1;









		goto error;









	}



















	rep_len = recv(sd, msg, sizeof(*msg), 0);









	if (rep_len < 0) {









		rc = -2;









		goto error;









	}



















	if (msg->n.nlmsg_type == NLMSG_ERROR ||









	    !NLMSG_OK(&msg->n, rep_len)) {









		rc = -3;









		goto error;









	}



















	return 0;









error:









	return rc;









}



















static __u8 get_dev_enable_state(struct msgtemplate *msg)









{









	struct nlattr *na;









	int rep_len;









	int len;



















	rep_len = GENLMSG_PAYLOAD(&msg->n);









	na = (struct nlattr *)GENLMSG_DATA(msg);









	len = 0;



















	while (len < rep_len) {









		len += NLA_ALIGN(na->nla_len);









		if (na->nla_type == NFC_ATTR_DEVICE_POWERED)









			return *(char *)NLA_DATA(na);









		na = (struct nlattr *)(GENLMSG_DATA(msg) + len);









	}



















	return rep_len;









}



















FIXTURE(NCI) {









	int virtual_nci_fd;









	bool open_state;









	int dev_idex;









	bool isNCI2;









	int proto;









	__u32 pid;









	__u16 fid;









	int sd;









};



















FIXTURE_VARIANT(NCI) {









	bool isNCI2;









};



















FIXTURE_VARIANT_ADD(NCI, NCI1_0) {









	.isNCI2 = false,









};



















FIXTURE_VARIANT_ADD(NCI, NCI2_0) {









	.isNCI2 = true,









};



















static void *virtual_dev_open(void *data)









{









	char buf[258];









	int dev_fd;









	int len;



















	dev_fd = *(int *)data;



















	while ((len = read(dev_fd, buf, 258)) == 0)









		;









	if (len <= 0)









		goto error;









	if (len != sizeof(nci_reset_cmd))









		goto error;









	if (memcmp(nci_reset_cmd, buf, len))









		goto error;









	write(dev_fd, nci_reset_rsp, sizeof(nci_reset_rsp));



















	while ((len = read(dev_fd, buf, 258)) == 0)









		;









	if (len <= 0)









		goto error;









	if (len != sizeof(nci_init_cmd))









		goto error;









	if (memcmp(nci_init_cmd, buf, len))









		goto error;









	write(dev_fd, nci_init_rsp, sizeof(nci_init_rsp));



















	while ((len = read(dev_fd, buf, 258)) == 0)









		;









	if (len <= 0)









		goto error;









	if (len != sizeof(nci_rf_disc_map_cmd))









		goto error;









	if (memcmp(nci_rf_disc_map_cmd, buf, len))









		goto error;









	write(dev_fd, nci_rf_disc_map_rsp, sizeof(nci_rf_disc_map_rsp));



















	return (void *)0;









error:









	return (void *)-1;









}



















static void *virtual_dev_open_v2(void *data)









{









	char buf[258];









	int dev_fd;









	int len;



















	dev_fd = *(int *)data;



















	while ((len = read(dev_fd, buf, 258)) == 0)









		;









	if (len <= 0)









		goto error;









	if (len != sizeof(nci_reset_cmd))









		goto error;









	if (memcmp(nci_reset_cmd, buf, len))









		goto error;









	write(dev_fd, nci_reset_rsp_v2, sizeof(nci_reset_rsp_v2));









	write(dev_fd, nci_reset_ntf, sizeof(nci_reset_ntf));



















	while ((len = read(dev_fd, buf, 258)) == 0)









		;









	if (len <= 0)









		goto error;









	if (len != sizeof(nci_init_cmd_v2))









		goto error;









	if (memcmp(nci_init_cmd_v2, buf, len))









		goto error;









	write(dev_fd, nci_init_rsp_v2, sizeof(nci_init_rsp_v2));



















	while ((len = read(dev_fd, buf, 258)) == 0)









		;









	if (len <= 0)









		goto error;









	if (len != sizeof(nci_rf_disc_map_cmd))









		goto error;









	if (memcmp(nci_rf_disc_map_cmd, buf, len))









		goto error;









	write(dev_fd, nci_rf_disc_map_rsp, sizeof(nci_rf_disc_map_rsp));



















	return (void *)0;









error:









	return (void *)-1;









}



















FIXTURE_SETUP(NCI)









{









	struct msgtemplate msg;









	pthread_t thread_t;









	int status;









	int rc;



















	self->open_state = false;









	self->proto = VIRTUAL_NFC_PROTOCOLS;









	self->isNCI2 = variant->isNCI2;



















	self->sd = create_nl_socket();









	ASSERT_NE(self->sd, -1);



















	self->pid = getpid();









	self->fid = get_family_id(self->sd, self->pid);









	ASSERT_NE(self->fid, -1);



















	self->virtual_nci_fd = open("/dev/virtual_nci", O_RDWR);









	ASSERT_GT(self->virtual_nci_fd, -1);



















	rc = ioctl(self->virtual_nci_fd, IOCTL_GET_NCIDEV_IDX, &self->dev_idex);









	ASSERT_EQ(rc, 0);



















	rc = get_nci_devid(self->sd, self->fid, self->pid, self->dev_idex, &msg);









	ASSERT_EQ(rc, 0);









	EXPECT_EQ(get_dev_enable_state(&msg), 0);



















	if (self->isNCI2)









		rc = pthread_create(&thread_t, NULL, virtual_dev_open_v2,









				    (void *)&self->virtual_nci_fd);









	else









		rc = pthread_create(&thread_t, NULL, virtual_dev_open,









				    (void *)&self->virtual_nci_fd);









	ASSERT_GT(rc, -1);



















	rc = send_cmd_with_idx(self->sd, self->fid, self->pid,









			       NFC_CMD_DEV_UP, self->dev_idex);









	EXPECT_EQ(rc, 0);



















	pthread_join(thread_t, (void **)&status);









	ASSERT_EQ(status, 0);









	self->open_state = true;









}



















static void *virtual_deinit(void *data)









{









	char buf[258];









	int dev_fd;









	int len;



















	dev_fd = *(int *)data;



















	while ((len = read(dev_fd, buf, 258)) == 0)









		;









	if (len <= 0)









		goto error;









	if (len != sizeof(nci_reset_cmd))









		goto error;









	if (memcmp(nci_reset_cmd, buf, len))









		goto error;









	write(dev_fd, nci_reset_rsp, sizeof(nci_reset_rsp));



















	return (void *)0;









error:









	return (void *)-1;









}



















static void *virtual_deinit_v2(void *data)









{









	char buf[258];









	int dev_fd;









	int len;



















	dev_fd = *(int *)data;



















	while ((len = read(dev_fd, buf, 258)) == 0)









		;









	if (len <= 0)









		goto error;









	if (len != sizeof(nci_reset_cmd))









		goto error;









	if (memcmp(nci_reset_cmd, buf, len))









		goto error;









	write(dev_fd, nci_reset_rsp_v2, sizeof(nci_reset_rsp_v2));









	write(dev_fd, nci_reset_ntf, sizeof(nci_reset_ntf));



















	return (void *)0;









error:









	return (void *)-1;









}



















FIXTURE_TEARDOWN(NCI)









{









	pthread_t thread_t;









	int status;









	int rc;



















	if (self->open_state) {









		if (self->isNCI2)









			rc = pthread_create(&thread_t, NULL,









					    virtual_deinit_v2,









					    (void *)&self->virtual_nci_fd);









		else









			rc = pthread_create(&thread_t, NULL, virtual_deinit,









					    (void *)&self->virtual_nci_fd);



















		ASSERT_GT(rc, -1);









		rc = send_cmd_with_idx(self->sd, self->fid, self->pid,









				       NFC_CMD_DEV_DOWN, self->dev_idex);









		EXPECT_EQ(rc, 0);



















		pthread_join(thread_t, (void **)&status);









		ASSERT_EQ(status, 0);









	}



















	close(self->sd);









	close(self->virtual_nci_fd);









	self->open_state = false;









}



















TEST_F(NCI, init)









{









	struct msgtemplate msg;









	int rc;



















	rc = get_nci_devid(self->sd, self->fid, self->pid, self->dev_idex,









			   &msg);









	ASSERT_EQ(rc, 0);









	EXPECT_EQ(get_dev_enable_state(&msg), 1);









}



















static void *virtual_poll_start(void *data)









{









	char buf[258];









	int dev_fd;









	int len;



















	dev_fd = *(int *)data;



















	while ((len = read(dev_fd, buf, 258)) == 0)









		;









	if (len <= 0)









		goto error;









	if (len != sizeof(nci_rf_discovery_cmd))









		goto error;









	if (memcmp(nci_rf_discovery_cmd, buf, len))









		goto error;









	write(dev_fd, nci_rf_disc_rsp, sizeof(nci_rf_disc_rsp))









		;



















	return (void *)0;









error:









	return (void *)-1;









}



















static void *virtual_poll_stop(void *data)









{









	char buf[258];









	int dev_fd;









	int len;



















	dev_fd = *(int *)data;



















	while ((len = read(dev_fd, buf, 258)) == 0)









		;









	if (len <= 0)









		goto error;









	if (len != sizeof(nci_rf_deact_cmd))









		goto error;









	if (memcmp(nci_rf_deact_cmd, buf, len))









		goto error;









	write(dev_fd, nci_rf_deact_rsp, sizeof(nci_rf_deact_rsp));



















	return (void *)0;









error:









	return (void *)-1;









}



















TEST_F(NCI, start_poll)









{









	__u16 nla_start_poll_type[2] = {NFC_ATTR_DEVICE_INDEX,









					 NFC_ATTR_PROTOCOLS};









	void *nla_start_poll_data[2] = {&self->dev_idex, &self->proto};









	int nla_start_poll_len[2] = {4, 4};









	pthread_t thread_t;









	int status;









	int rc;



















	rc = pthread_create(&thread_t, NULL, virtual_poll_start,









			    (void *)&self->virtual_nci_fd);









	ASSERT_GT(rc, -1);



















	rc = send_cmd_mt_nla(self->sd, self->fid, self->pid,









			     NFC_CMD_START_POLL, 2, nla_start_poll_type,









			     nla_start_poll_data, nla_start_poll_len);









	EXPECT_EQ(rc, 0);



















	pthread_join(thread_t, (void **)&status);









	ASSERT_EQ(status, 0);



















	rc = pthread_create(&thread_t, NULL, virtual_poll_stop,









			    (void *)&self->virtual_nci_fd);









	ASSERT_GT(rc, -1);



















	rc = send_cmd_with_idx(self->sd, self->fid, self->pid,









			       NFC_CMD_STOP_POLL, self->dev_idex);









	EXPECT_EQ(rc, 0);



















	pthread_join(thread_t, (void **)&status);









	ASSERT_EQ(status, 0);









}



















TEST_F(NCI, deinit)









{









	struct msgtemplate msg;









	pthread_t thread_t;









	int status;









	int rc;



















	rc = get_nci_devid(self->sd, self->fid, self->pid, self->dev_idex,









			   &msg);









	ASSERT_EQ(rc, 0);









	EXPECT_EQ(get_dev_enable_state(&msg), 1);



















	if (self->isNCI2)









		rc = pthread_create(&thread_t, NULL, virtual_deinit_v2,









				    (void *)&self->virtual_nci_fd);









	else









		rc = pthread_create(&thread_t, NULL, virtual_deinit,









				    (void *)&self->virtual_nci_fd);









	ASSERT_GT(rc, -1);



















	rc = send_cmd_with_idx(self->sd, self->fid, self->pid,









			       NFC_CMD_DEV_DOWN, self->dev_idex);









	EXPECT_EQ(rc, 0);



















	pthread_join(thread_t, (void **)&status);









	self->open_state = 0;









	ASSERT_EQ(status, 0);



















	rc = get_nci_devid(self->sd, self->fid, self->pid, self->dev_idex,









			   &msg);









	ASSERT_EQ(rc, 0);









	EXPECT_EQ(get_dev_enable_state(&msg), 0);









}



















TEST_HARNESS_MAIN