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Date: Tue, 17 Aug 2021 06:28:18 -0700
From: bongsu.jeon2@...il.com
To: shuah@...nel.org, krzysztof.kozlowski@...onical.com
Cc: netdev@...r.kernel.org, linux-nfc@...ts.01.org,
linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
Bongsu Jeon <bongsu.jeon@...sung.com>
Subject: [PATCH v2 net-next 8/8] selftests: nci: Add the NCI testcase reading T4T Tag
From: Bongsu Jeon <bongsu.jeon@...sung.com>
Add the NCI testcase reading T4T Tag that has NFC TEST in plain text.
the virtual device application acts as T4T Tag in this testcase.
Signed-off-by: Bongsu Jeon <bongsu.jeon@...sung.com>
---
tools/testing/selftests/nci/nci_dev.c | 292 +++++++++++++++++++++++++-
1 file changed, 287 insertions(+), 5 deletions(-)
diff --git a/tools/testing/selftests/nci/nci_dev.c b/tools/testing/selftests/nci/nci_dev.c
index a68b14642c20..e1bf55dabdf6 100644
--- a/tools/testing/selftests/nci/nci_dev.c
+++ b/tools/testing/selftests/nci/nci_dev.c
@@ -57,6 +57,29 @@ const __u8 nci_init_rsp_v2[] = {0x40, 0x01, 0x1c, 0x00, 0x1a, 0x7e, 0x06,
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};
+const __u8 nci_rf_deact_ntf[] = {0x61, 0x06, 0x02, 0x00, 0x00};
+const __u8 nci_rf_activate_ntf[] = {0x61, 0x05, 0x1D, 0x01, 0x02, 0x04, 0x00,
+ 0xFF, 0xFF, 0x0C, 0x44, 0x03, 0x07, 0x04,
+ 0x62, 0x26, 0x11, 0x80, 0x1D, 0x80, 0x01,
+ 0x20, 0x00, 0x00, 0x00, 0x06, 0x05, 0x75,
+ 0x77, 0x81, 0x02, 0x80};
+const __u8 nci_t4t_select_cmd[] = {0x00, 0x00, 0x0C, 0x00, 0xA4, 0x04, 0x00,
+ 0x07, 0xD2, 0x76, 0x00, 0x00, 0x85, 0x01, 0x01};
+const __u8 nci_t4t_select_cmd2[] = {0x00, 0x00, 0x07, 0x00, 0xA4, 0x00, 0x0C, 0x02,
+ 0xE1, 0x03};
+const __u8 nci_t4t_select_cmd3[] = {0x00, 0x00, 0x07, 0x00, 0xA4, 0x00, 0x0C, 0x02,
+ 0xE1, 0x04};
+const __u8 nci_t4t_read_cmd[] = {0x00, 0x00, 0x05, 0x00, 0xB0, 0x00, 0x00, 0x0F};
+const __u8 nci_t4t_read_rsp[] = {0x00, 0x00, 0x11, 0x00, 0x0F, 0x20, 0x00, 0x3B,
+ 0x00, 0x34, 0x04, 0x06, 0xE1, 0x04, 0x08, 0x00,
+ 0x00, 0x00, 0x90, 0x00};
+const __u8 nci_t4t_read_cmd2[] = {0x00, 0x00, 0x05, 0x00, 0xB0, 0x00, 0x00, 0x02};
+const __u8 nci_t4t_read_rsp2[] = {0x00, 0x00, 0x04, 0x00, 0x0F, 0x90, 0x00};
+const __u8 nci_t4t_read_cmd3[] = {0x00, 0x00, 0x05, 0x00, 0xB0, 0x00, 0x02, 0x0F};
+const __u8 nci_t4t_read_rsp3[] = {0x00, 0x00, 0x11, 0xD1, 0x01, 0x0B, 0x54, 0x02,
+ 0x65, 0x6E, 0x4E, 0x46, 0x43, 0x20, 0x54, 0x45,
+ 0x53, 0x54, 0x90, 0x00};
+const __u8 nci_t4t_rsp_ok[] = {0x00, 0x00, 0x02, 0x90, 0x00};
struct msgtemplate {
struct nlmsghdr n;
@@ -150,7 +173,7 @@ static int send_get_nfc_family(int sd, __u32 pid)
&nla_get_family_len, NLM_F_REQUEST);
}
-static int get_family_id(int sd, __u32 pid)
+static int get_family_id(int sd, __u32 pid, __u32 *event_group)
{
struct {
struct nlmsghdr n;
@@ -160,6 +183,7 @@ static int get_family_id(int sd, __u32 pid)
struct nlattr *na;
int resp_len;
__u16 id;
+ int len;
int rc;
rc = send_get_nfc_family(sd, pid);
@@ -173,11 +197,43 @@ static int get_family_id(int sd, __u32 pid)
!NLMSG_OK(&ans.n, resp_len))
return 0;
+ len = 0;
+ resp_len = GENLMSG_PAYLOAD(&ans.n);
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);
+ while (len < resp_len) {
+ len += NLA_ALIGN(na->nla_len);
+ if (na->nla_type == CTRL_ATTR_FAMILY_ID) {
+ id = *(__u16 *)NLA_DATA(na);
+ } else if (na->nla_type == CTRL_ATTR_MCAST_GROUPS) {
+ struct nlattr *nested_na;
+ struct nlattr *group_na;
+ int group_attr_len;
+ int group_attr;
+
+ nested_na = (struct nlattr *)((char *)na + NLA_HDRLEN);
+ group_na = (struct nlattr *)((char *)nested_na + NLA_HDRLEN);
+ group_attr_len = 0;
+
+ for (group_attr = CTRL_ATTR_MCAST_GRP_UNSPEC;
+ group_attr < CTRL_ATTR_MCAST_GRP_MAX; group_attr++) {
+ if (group_na->nla_type == CTRL_ATTR_MCAST_GRP_ID) {
+ *event_group = *(__u32 *)((char *)group_na +
+ NLA_HDRLEN);
+ break;
+ }
+
+ group_attr_len += NLA_ALIGN(group_na->nla_len) +
+ NLA_HDRLEN;
+ if (group_attr_len >= nested_na->nla_len)
+ break;
+
+ group_na = (struct nlattr *)((char *)group_na +
+ NLA_ALIGN(group_na->nla_len));
+ }
+ }
+ na = (struct nlattr *)(GENLMSG_DATA(&ans) + len);
+ }
return id;
}
@@ -347,6 +403,7 @@ FIXTURE_SETUP(NCI)
{
struct msgtemplate msg;
pthread_t thread_t;
+ __u32 event_group;
int status;
int rc;
@@ -358,12 +415,16 @@ FIXTURE_SETUP(NCI)
ASSERT_NE(self->sd, -1);
self->pid = getpid();
- self->fid = get_family_id(self->sd, self->pid);
+ self->fid = get_family_id(self->sd, self->pid, &event_group);
ASSERT_NE(self->fid, -1);
self->virtual_nci_fd = open("/dev/virtual_nci", O_RDWR);
ASSERT_GT(self->virtual_nci_fd, -1);
+ rc = setsockopt(self->sd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &event_group,
+ sizeof(event_group));
+ ASSERT_NE(rc, -1);
+
rc = ioctl(self->virtual_nci_fd, IOCTL_GET_NCIDEV_IDX, &self->dev_idex);
ASSERT_EQ(rc, 0);
@@ -574,6 +635,227 @@ TEST_F(NCI, start_poll)
EXPECT_EQ(status, 0);
}
+int get_taginfo(int dev_idx, int sd, int fid, int pid)
+{
+ struct {
+ struct nlmsghdr n;
+ struct genlmsghdr g;
+ char buf[512];
+ } ans;
+
+ struct nlattr *na;
+ __u32 protocol;
+ int targetidx;
+ __u8 sel_res;
+ int resp_len;
+ int len;
+
+ __u16 tagid_type;
+ void *tagid_type_data;
+ int tagid_len;
+
+ tagid_type = NFC_ATTR_DEVICE_INDEX;
+ tagid_type_data = &dev_idx;
+ tagid_len = 4;
+
+ send_cmd_mt_nla(sd, fid, pid, NFC_CMD_GET_TARGET, 1, &tagid_type,
+ &tagid_type_data, &tagid_len, NLM_F_REQUEST | NLM_F_DUMP);
+ resp_len = recv(sd, &ans, sizeof(ans), 0);
+ if (ans.n.nlmsg_type == NLMSG_ERROR || resp_len < 0 ||
+ !NLMSG_OK(&ans.n, resp_len))
+ return -1;
+
+ resp_len = GENLMSG_PAYLOAD(&ans.n);
+ na = (struct nlattr *)GENLMSG_DATA(&ans);
+
+ len = 0;
+ targetidx = -1;
+ protocol = -1;
+ sel_res = -1;
+
+ while (len < resp_len) {
+ len += NLA_ALIGN(na->nla_len);
+
+ if (na->nla_type == NFC_ATTR_TARGET_INDEX)
+ targetidx = *(int *)((char *)na + NLA_HDRLEN);
+ else if (na->nla_type == NFC_ATTR_TARGET_SEL_RES)
+ sel_res = *(__u8 *)((char *)na + NLA_HDRLEN);
+ else if (na->nla_type == NFC_ATTR_PROTOCOLS)
+ protocol = *(__u32 *)((char *)na + NLA_HDRLEN);
+
+ na = (struct nlattr *)(GENLMSG_DATA(&ans) + len);
+ }
+
+ if (targetidx == -1 || sel_res != 0x20 || protocol != NFC_PROTO_ISO14443_MASK)
+ return -1;
+
+ return targetidx;
+}
+
+int connect_socket(int dev_idx, int target_idx)
+{
+ struct sockaddr_nfc addr;
+ int sock;
+ int err = 0;
+
+ sock = socket(AF_NFC, SOCK_SEQPACKET, NFC_SOCKPROTO_RAW);
+ if (sock == -1)
+ return -1;
+
+ addr.sa_family = AF_NFC;
+ addr.dev_idx = dev_idx;
+ addr.target_idx = target_idx;
+ addr.nfc_protocol = NFC_PROTO_ISO14443;
+
+ err = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
+ if (err) {
+ close(sock);
+ return -1;
+ }
+
+ return sock;
+}
+
+int connect_tag(int dev_idx, int virtual_fd, int sd, int fid, int pid)
+{
+ struct genlmsghdr *genlhdr;
+ struct nlattr *na;
+ char evt_data[255];
+ int target_idx;
+ int resp_len;
+ int evt_dev;
+
+ write(virtual_fd, nci_rf_activate_ntf, sizeof(nci_rf_activate_ntf));
+ resp_len = recv(sd, evt_data, sizeof(evt_data), 0);
+ if (resp_len < 0)
+ return -1;
+
+ genlhdr = (struct genlmsghdr *)((struct nlmsghdr *)evt_data + 1);
+ na = (struct nlattr *)(genlhdr + 1);
+ evt_dev = *(int *)((char *)na + NLA_HDRLEN);
+ if (dev_idx != evt_dev)
+ return -1;
+
+ target_idx = get_taginfo(dev_idx, sd, fid, pid);
+ if (target_idx == -1)
+ return -1;
+ return connect_socket(dev_idx, target_idx);
+}
+
+int read_write_nci_cmd(int nfc_sock, int virtual_fd, const __u8 *cmd, __u32 cmd_len,
+ const __u8 *rsp, __u32 rsp_len)
+{
+ char buf[256];
+ unsigned int len;
+
+ send(nfc_sock, &cmd[3], cmd_len - 3, 0);
+ len = read(virtual_fd, buf, cmd_len);
+ if (len < 0 || memcmp(buf, cmd, cmd_len))
+ return -1;
+
+ write(virtual_fd, rsp, rsp_len);
+ len = recv(nfc_sock, buf, rsp_len - 2, 0);
+ if (len < 0 || memcmp(&buf[1], &rsp[3], rsp_len - 3))
+ return -1;
+
+ return 0;
+}
+
+int read_tag(int nfc_sock, int virtual_fd)
+{
+ if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_select_cmd,
+ sizeof(nci_t4t_select_cmd), nci_t4t_rsp_ok,
+ sizeof(nci_t4t_rsp_ok)))
+ return -1;
+
+ if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_select_cmd2,
+ sizeof(nci_t4t_select_cmd2), nci_t4t_rsp_ok,
+ sizeof(nci_t4t_rsp_ok)))
+ return -1;
+
+ if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_read_cmd,
+ sizeof(nci_t4t_read_cmd), nci_t4t_read_rsp,
+ sizeof(nci_t4t_read_rsp)))
+ return -1;
+
+ if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_select_cmd3,
+ sizeof(nci_t4t_select_cmd3), nci_t4t_rsp_ok,
+ sizeof(nci_t4t_rsp_ok)))
+ return -1;
+
+ if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_read_cmd2,
+ sizeof(nci_t4t_read_cmd2), nci_t4t_read_rsp2,
+ sizeof(nci_t4t_read_rsp2)))
+ return -1;
+
+ return read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_read_cmd3,
+ sizeof(nci_t4t_read_cmd3), nci_t4t_read_rsp3,
+ sizeof(nci_t4t_read_rsp3));
+}
+
+static void *virtual_deactivate_proc(void *data)
+{
+ int virtual_fd;
+ char buf[256];
+ int deactcmd_len;
+ int len;
+
+ virtual_fd = *(int *)data;
+ deactcmd_len = sizeof(nci_rf_deact_cmd);
+ len = read(virtual_fd, buf, deactcmd_len);
+ if (len != deactcmd_len || memcmp(buf, nci_rf_deact_cmd, deactcmd_len))
+ return (void *)-1;
+
+ write(virtual_fd, nci_rf_deact_rsp, sizeof(nci_rf_deact_rsp));
+ write(virtual_fd, nci_rf_deact_ntf, sizeof(nci_rf_deact_ntf));
+
+ return (void *)0;
+}
+
+int disconnect_tag(int nfc_sock, int virtual_fd)
+{
+ pthread_t thread_t;
+ char buf[256];
+ int status;
+ int len;
+
+ send(nfc_sock, &nci_t4t_select_cmd3[3], sizeof(nci_t4t_select_cmd3) - 3, 0);
+ len = read(virtual_fd, buf, sizeof(nci_t4t_select_cmd3));
+ if (len < 0 || memcmp(buf, nci_t4t_select_cmd3, sizeof(nci_t4t_select_cmd3)))
+ return -1;
+
+ len = recv(nfc_sock, buf, sizeof(nci_t4t_rsp_ok), 0);
+ if (len != -1)
+ return -1;
+
+ status = pthread_create(&thread_t, NULL, virtual_deactivate_proc,
+ (void *)&virtual_fd);
+
+ close(nfc_sock);
+ pthread_join(thread_t, (void **)&status);
+ return status;
+}
+
+TEST_F(NCI, t4t_tag_read)
+{
+ int nfc_sock;
+ int status;
+
+ status = start_polling(self->dev_idex, self->proto, self->virtual_nci_fd,
+ self->sd, self->fid, self->pid);
+ EXPECT_EQ(status, 0);
+
+ nfc_sock = connect_tag(self->dev_idex, self->virtual_nci_fd, self->sd,
+ self->fid, self->pid);
+ ASSERT_GT(nfc_sock, -1);
+
+ status = read_tag(nfc_sock, self->virtual_nci_fd);
+ ASSERT_EQ(status, 0);
+
+ status = disconnect_tag(nfc_sock, self->virtual_nci_fd);
+ EXPECT_EQ(status, 0);
+}
+
TEST_F(NCI, deinit)
{
struct msgtemplate msg;
--
2.32.0
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