[PATCH 8/8] tests: check decoding of NETLINK_SOCK_DIAG AF_SMC messages
JingPiao Chen
chenjingpiao at gmail.com
Tue Jun 13 14:13:25 UTC 2017
* tests/netlink_sock_diag.c: Include <linux/smc.h>
and <linux/smc_diag.h>.
(test_smc_diag_req, test_smc_diag_msg): New functions.
(main): Use them.
---
tests/netlink_sock_diag.c | 266 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 266 insertions(+)
diff --git a/tests/netlink_sock_diag.c b/tests/netlink_sock_diag.c
index 8171e2e..50ef507 100644
--- a/tests/netlink_sock_diag.c
+++ b/tests/netlink_sock_diag.c
@@ -40,6 +40,10 @@
#include <linux/netlink.h>
#include <linux/netlink_diag.h>
#include <linux/packet_diag.h>
+#ifdef AF_SMC
+# include <linux/smc.h>
+# include <linux/smc_diag.h>
+#endif
#include <linux/sock_diag.h>
#include <linux/unix_diag.h>
@@ -1186,6 +1190,264 @@ test_inet_diag_msg(const int fd)
sprintrc(rc));
}
+#ifdef AF_SMC
+static void
+test_smc_diag_req(const int fd)
+{
+ const char address[] = "8.8.8.8";
+ struct nlmsghdr *nlh;
+ struct smc_diag_req *req;
+ uint8_t *family;
+ void *const nlh0 = tail_alloc(NLMSG_HDRLEN);
+ long rc;
+
+ /* print family only */
+ nlh = nlh0 - sizeof(*family);
+ *nlh = (struct nlmsghdr) {
+ .nlmsg_len = NLMSG_HDRLEN + sizeof(*family),
+ .nlmsg_type = SOCK_DIAG_BY_FAMILY,
+ .nlmsg_flags = NLM_F_REQUEST,
+ };
+
+ family = NLMSG_DATA(nlh);
+ *family = AF_SMC;
+
+ rc = sendto(fd, nlh, NLMSG_HDRLEN + sizeof(*family), MSG_DONTWAIT,
+ NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_REQUEST, seq=0, pid=0}, {family=AF_SMC}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, NLMSG_HDRLEN + (unsigned int) sizeof(*family),
+ NLMSG_HDRLEN + (unsigned int) sizeof(*family),
+ sprintrc(rc));
+
+ /* print unknown family */
+ *family = 0xff;
+
+ rc = sendto(fd, nlh, NLMSG_HDRLEN + sizeof(*family), MSG_DONTWAIT,
+ NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_REQUEST, seq=0, pid=0}, {family=0xff /* AF_??? */}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, NLMSG_HDRLEN + (unsigned int) sizeof(*family),
+ NLMSG_HDRLEN + (unsigned int) sizeof(*family),
+ sprintrc(rc));
+
+ /* short read of family */
+ memmove(nlh0, nlh, NLMSG_HDRLEN);
+ nlh = nlh0;
+
+ rc = sendto(fd, nlh, NLMSG_HDRLEN + sizeof(*family), MSG_DONTWAIT,
+ NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_REQUEST, seq=0, pid=0}, %p}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, NLMSG_HDRLEN + (unsigned int) sizeof(*family),
+ NLMSG_DATA(nlh),
+ NLMSG_HDRLEN + (unsigned int) sizeof(*family),
+ sprintrc(rc));
+
+ /* print family and string */
+ nlh = nlh0 - sizeof(*family) - 4;
+ *nlh = (struct nlmsghdr) {
+ .nlmsg_len = NLMSG_HDRLEN + sizeof(*family) + 4,
+ .nlmsg_type = SOCK_DIAG_BY_FAMILY,
+ .nlmsg_flags = NLM_F_REQUEST,
+ };
+
+ family = NLMSG_DATA(nlh);
+ *family = AF_SMC;
+ memcpy(family + 1, "1234", 4);
+
+ rc = sendto(fd, nlh, NLMSG_HDRLEN + sizeof(*family) + 4, MSG_DONTWAIT,
+ NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_REQUEST, seq=0, pid=0}"
+ ", {family=AF_SMC, \"1234\"}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, NLMSG_HDRLEN + (unsigned int) sizeof(*family) + 4,
+ NLMSG_HDRLEN + (unsigned int) sizeof(*family) + 4,
+ sprintrc(rc));
+
+ /* print smc_diag_req */
+ nlh = nlh0 - sizeof(*req);
+ *nlh = (struct nlmsghdr) {
+ .nlmsg_len = NLMSG_HDRLEN + sizeof(*req),
+ .nlmsg_type = SOCK_DIAG_BY_FAMILY,
+ .nlmsg_flags = NLM_F_REQUEST,
+ };
+
+ req = NLMSG_DATA(nlh);
+ *req = (struct smc_diag_req) {
+ .diag_family = AF_SMC,
+ .diag_ext = 1 << (SMC_DIAG_CONNINFO - 1),
+ };
+
+ if (!inet_pton(AF_INET, address, req->id.idiag_src))
+ perror_msg_and_skip("sendto");
+ if (!inet_pton(AF_INET, address, req->id.idiag_dst))
+ perror_msg_and_skip("sendto");
+
+ rc = sendto(fd, nlh, nlh->nlmsg_len, MSG_DONTWAIT, NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_REQUEST, seq=0, pid=0}, {diag_family=AF_SMC"
+ ", diag_ext=(1<<(SMC_DIAG_CONNINFO-1)), id={idiag_sport=htons(0)"
+ ", idiag_dport=htons(0), inet_pton(AF_INET, \"%s\", idiag_src)"
+ ", inet_pton(AF_INET, \"%s\", idiag_dst), idiag_if=0"
+ ", idiag_cookie=[0, 0]}}}, %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, nlh->nlmsg_len, address, address,
+ nlh->nlmsg_len, sprintrc(rc));
+
+ /* short read of smc_diag_req */
+ nlh = nlh0 - sizeof(*family);
+ memmove(nlh, nlh0 - sizeof(*req), NLMSG_HDRLEN + sizeof(*family));
+
+ rc = sendto(fd, nlh, NLMSG_HDRLEN + sizeof(*req), MSG_DONTWAIT,
+ NULL, 0);
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_REQUEST, seq=0, pid=0}, {family=AF_SMC, %p}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, NLMSG_HDRLEN + (unsigned int) sizeof(*req),
+ NLMSG_DATA(nlh) + 1,
+ NLMSG_HDRLEN + (unsigned int) sizeof(*req),
+ sprintrc(rc));
+}
+
+static void
+test_smc_diag_msg(const int fd)
+{
+ const char address[] = "8.8.8.8";
+ struct nlmsghdr *nlh;
+ struct smc_diag_msg *msg;
+ uint8_t *family;
+ void *const nlh0 = tail_alloc(NLMSG_HDRLEN);
+ long rc;
+
+ /* print family only */
+ nlh = nlh0 - sizeof(*family);
+ *nlh = (struct nlmsghdr) {
+ .nlmsg_len = NLMSG_HDRLEN + sizeof(*family),
+ .nlmsg_type = SOCK_DIAG_BY_FAMILY,
+ .nlmsg_flags = NLM_F_DUMP,
+ };
+
+ family = NLMSG_DATA(nlh);
+ *family = AF_SMC;
+
+ rc = sendto(fd, nlh, NLMSG_HDRLEN + sizeof(*family), MSG_DONTWAIT,
+ NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {family=AF_SMC}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, NLMSG_HDRLEN + (unsigned int) sizeof(*family),
+ NLMSG_HDRLEN + (unsigned int) sizeof(*family),
+ sprintrc(rc));
+
+ /* print unknown family */
+ *family = 0xff;
+
+ rc = sendto(fd, nlh, NLMSG_HDRLEN + sizeof(*family), MSG_DONTWAIT,
+ NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {family=0xff /* AF_??? */}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, NLMSG_HDRLEN + (unsigned int) sizeof(*family),
+ NLMSG_HDRLEN + (unsigned int) sizeof(*family),
+ sprintrc(rc));
+
+ /* short read of family */
+ memmove(nlh0, nlh, NLMSG_HDRLEN);
+ nlh = nlh0;
+
+ rc = sendto(fd, nlh, NLMSG_HDRLEN + sizeof(*family), MSG_DONTWAIT,
+ NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, %p}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, NLMSG_HDRLEN + (unsigned int) sizeof(*family),
+ NLMSG_DATA(nlh),
+ NLMSG_HDRLEN + (unsigned int) sizeof(*family),
+ sprintrc(rc));
+
+ /* print family and string */
+ nlh = nlh0 - sizeof(*family) - 4;
+ *nlh = (struct nlmsghdr) {
+ .nlmsg_len = NLMSG_HDRLEN + sizeof(*family) + 4,
+ .nlmsg_type = SOCK_DIAG_BY_FAMILY,
+ .nlmsg_flags = NLM_F_DUMP,
+ };
+
+ family = NLMSG_DATA(nlh);
+ *family = AF_SMC;
+ memcpy(family + 1, "1234", 4);
+
+ rc = sendto(fd, nlh, NLMSG_HDRLEN + sizeof(*family) + 4, MSG_DONTWAIT,
+ NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}"
+ ", {family=AF_SMC, \"1234\"}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, NLMSG_HDRLEN + (unsigned int) sizeof(*family) + 4,
+ NLMSG_HDRLEN + (unsigned int) sizeof(*family) + 4,
+ sprintrc(rc));
+
+ /* print smc_diag_msg */
+ nlh = nlh0 - sizeof(*msg);
+ *nlh = (struct nlmsghdr) {
+ .nlmsg_len = NLMSG_HDRLEN + sizeof(*msg),
+ .nlmsg_type = SOCK_DIAG_BY_FAMILY,
+ .nlmsg_flags = NLM_F_DUMP,
+ };
+
+ msg = NLMSG_DATA(nlh);
+ *msg = (struct smc_diag_msg) {
+ .diag_family = AF_SMC,
+ .diag_state = SMC_ACTIVE,
+ };
+
+ if (!inet_pton(AF_INET, address, msg->id.idiag_src))
+ perror_msg_and_skip("sendto");
+ if (!inet_pton(AF_INET, address, msg->id.idiag_dst))
+ perror_msg_and_skip("sendto");
+
+ rc = sendto(fd, nlh, nlh->nlmsg_len, MSG_DONTWAIT, NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {diag_family=AF_SMC"
+ ", diag_state=SMC_ACTIVE, diag_fallback=0, diag_shutdown=0"
+ ", id={idiag_sport=htons(0), idiag_dport=htons(0)"
+ ", inet_pton(AF_INET, \"%s\", idiag_src)"
+ ", inet_pton(AF_INET, \"%s\", idiag_dst), idiag_if=0"
+ ", idiag_cookie=[0, 0]}, diag_uid=0, diag_inode=0}}, %u"
+ ", MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, nlh->nlmsg_len, address, address,
+ nlh->nlmsg_len, sprintrc(rc));
+
+ /* short read of smc_diag_msg */
+ nlh = nlh0 - sizeof(*family);
+ memmove(nlh, nlh0 - sizeof(*msg), NLMSG_HDRLEN + sizeof(*family));
+
+ rc = sendto(fd, nlh, NLMSG_HDRLEN + sizeof(*msg), MSG_DONTWAIT,
+ NULL, 0);
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {family=AF_SMC, %p}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, NLMSG_HDRLEN + (unsigned int) sizeof(*msg),
+ NLMSG_DATA(nlh) + 1,
+ NLMSG_HDRLEN + (unsigned int) sizeof(*msg),
+ sprintrc(rc));
+}
+#endif
+
int main(void)
{
skip_if_unavailable("/proc/self/fd/");
@@ -1203,6 +1465,10 @@ int main(void)
test_inet_diag_req(fd);
test_inet_diag_req_v2(fd);
test_inet_diag_msg(fd);
+#ifdef AF_SMC
+ test_smc_diag_req(fd);
+ test_smc_diag_msg(fd);
+#endif
printf("+++ exited with 0 +++\n");
--
2.7.4
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