diff mbox series

[v6,bpf-next,2/6] selftests: xsk: introduce default Rx pkt stream

Message ID 20220901114813.16275-3-maciej.fijalkowski@intel.com (mailing list archive)
State Accepted
Commit 1adef0643b7df1069a53f6f5b7bc66c8234db899
Delegated to: BPF
Headers show
Series selftests: xsk: real device testing support | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for bpf-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 11 maintainers not CCed: shuah@kernel.org linux-kselftest@vger.kernel.org jolsa@kernel.org jonathan.lemon@gmail.com song@kernel.org yhs@fb.com haoluo@google.com martin.lau@linux.dev mykolal@fb.com kpsingh@kernel.org sdf@google.com
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch warning WARNING: line length of 81 exceeds 80 columns WARNING: line length of 84 exceeds 80 columns WARNING: line length of 93 exceeds 80 columns WARNING: line length of 95 exceeds 80 columns
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
bpf/vmtest-bpf-next-VM_Test-1 success Logs for build for s390x with gcc
bpf/vmtest-bpf-next-VM_Test-7 success Logs for test_maps on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-8 success Logs for test_maps on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-16 success Logs for test_verifier on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-17 success Logs for test_verifier on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-10 success Logs for test_progs on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-11 success Logs for test_progs on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-13 success Logs for test_progs_no_alu32 on x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-14 success Logs for test_progs_no_alu32 on x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-6 success Logs for test_maps on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-12 success Logs for test_progs_no_alu32 on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-15 success Logs for test_verifier on s390x with gcc
bpf/vmtest-bpf-next-PR success PR summary
bpf/vmtest-bpf-next-VM_Test-9 success Logs for test_progs on s390x with gcc
bpf/vmtest-bpf-next-VM_Test-4 success Logs for llvm-toolchain
bpf/vmtest-bpf-next-VM_Test-5 success Logs for set-matrix
bpf/vmtest-bpf-next-VM_Test-2 success Logs for build for x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-3 success Logs for build for x86_64 with llvm-16

Commit Message

Maciej Fijalkowski Sept. 1, 2022, 11:48 a.m. UTC 
In order to prepare xdpxceiver for physical device testing, let us
introduce default Rx pkt stream. Reason for doing it is that physical
device testing will use a UMEM with a doubled size where half of it will
be used by Tx and other half by Rx. This means that pkt addresses will
differ for Tx and Rx streams. Rx thread will initialize the
xsk_umem_info::base_addr that is added here so that pkt_set(), when
working on Rx UMEM will add this offset and second half of UMEM space
will be used. Note that currently base_addr is 0 on both sides. Future
commit will do the mentioned initialization.

Previously, veth based testing worked on separate UMEMs, so single
default stream was fine.

Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
---
 tools/testing/selftests/bpf/xskxceiver.c | 74 +++++++++++++++---------
 tools/testing/selftests/bpf/xskxceiver.h |  4 +-
 2 files changed, 51 insertions(+), 27 deletions(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/xskxceiver.c b/tools/testing/selftests/bpf/xskxceiver.c
index 19f65bce7f65..fbf65135fef6 100644
--- a/tools/testing/selftests/bpf/xskxceiver.c
+++ b/tools/testing/selftests/bpf/xskxceiver.c
@@ -433,15 +433,16 @@  static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 		ifobj->use_poll = false;
 		ifobj->use_fill_ring = true;
 		ifobj->release_rx = true;
-		ifobj->pkt_stream = test->pkt_stream_default;
 		ifobj->validation_func = NULL;
 
 		if (i == 0) {
 			ifobj->rx_on = false;
 			ifobj->tx_on = true;
+			ifobj->pkt_stream = test->tx_pkt_stream_default;
 		} else {
 			ifobj->rx_on = true;
 			ifobj->tx_on = false;
+			ifobj->pkt_stream = test->rx_pkt_stream_default;
 		}
 
 		memset(ifobj->umem, 0, sizeof(*ifobj->umem));
@@ -465,12 +466,15 @@  static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 static void test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 			   struct ifobject *ifobj_rx, enum test_mode mode)
 {
-	struct pkt_stream *pkt_stream;
+	struct pkt_stream *tx_pkt_stream;
+	struct pkt_stream *rx_pkt_stream;
 	u32 i;
 
-	pkt_stream = test->pkt_stream_default;
+	tx_pkt_stream = test->tx_pkt_stream_default;
+	rx_pkt_stream = test->rx_pkt_stream_default;
 	memset(test, 0, sizeof(*test));
-	test->pkt_stream_default = pkt_stream;
+	test->tx_pkt_stream_default = tx_pkt_stream;
+	test->rx_pkt_stream_default = rx_pkt_stream;
 
 	for (i = 0; i < MAX_INTERFACES; i++) {
 		struct ifobject *ifobj = i ? ifobj_rx : ifobj_tx;
@@ -531,16 +535,17 @@  static void pkt_stream_delete(struct pkt_stream *pkt_stream)
 static void pkt_stream_restore_default(struct test_spec *test)
 {
 	struct pkt_stream *tx_pkt_stream = test->ifobj_tx->pkt_stream;
+	struct pkt_stream *rx_pkt_stream = test->ifobj_rx->pkt_stream;
 
-	if (tx_pkt_stream != test->pkt_stream_default) {
+	if (tx_pkt_stream != test->tx_pkt_stream_default) {
 		pkt_stream_delete(test->ifobj_tx->pkt_stream);
-		test->ifobj_tx->pkt_stream = test->pkt_stream_default;
+		test->ifobj_tx->pkt_stream = test->tx_pkt_stream_default;
 	}
 
-	if (test->ifobj_rx->pkt_stream != test->pkt_stream_default &&
-	    test->ifobj_rx->pkt_stream != tx_pkt_stream)
+	if (rx_pkt_stream != test->rx_pkt_stream_default) {
 		pkt_stream_delete(test->ifobj_rx->pkt_stream);
-	test->ifobj_rx->pkt_stream = test->pkt_stream_default;
+		test->ifobj_rx->pkt_stream = test->rx_pkt_stream_default;
+	}
 }
 
 static struct pkt_stream *__pkt_stream_alloc(u32 nb_pkts)
@@ -563,7 +568,7 @@  static struct pkt_stream *__pkt_stream_alloc(u32 nb_pkts)
 
 static void pkt_set(struct xsk_umem_info *umem, struct pkt *pkt, u64 addr, u32 len)
 {
-	pkt->addr = addr;
+	pkt->addr = addr + umem->base_addr;
 	pkt->len = len;
 	if (len > umem->frame_size - XDP_PACKET_HEADROOM - MIN_PKT_SIZE * 2 - umem->frame_headroom)
 		pkt->valid = false;
@@ -602,22 +607,29 @@  static void pkt_stream_replace(struct test_spec *test, u32 nb_pkts, u32 pkt_len)
 
 	pkt_stream = pkt_stream_generate(test->ifobj_tx->umem, nb_pkts, pkt_len);
 	test->ifobj_tx->pkt_stream = pkt_stream;
+	pkt_stream = pkt_stream_generate(test->ifobj_rx->umem, nb_pkts, pkt_len);
 	test->ifobj_rx->pkt_stream = pkt_stream;
 }
 
-static void pkt_stream_replace_half(struct test_spec *test, u32 pkt_len, int offset)
+static void __pkt_stream_replace_half(struct ifobject *ifobj, u32 pkt_len,
+				      int offset)
 {
-	struct xsk_umem_info *umem = test->ifobj_tx->umem;
+	struct xsk_umem_info *umem = ifobj->umem;
 	struct pkt_stream *pkt_stream;
 	u32 i;
 
-	pkt_stream = pkt_stream_clone(umem, test->pkt_stream_default);
-	for (i = 1; i < test->pkt_stream_default->nb_pkts; i += 2)
+	pkt_stream = pkt_stream_clone(umem, ifobj->pkt_stream);
+	for (i = 1; i < ifobj->pkt_stream->nb_pkts; i += 2)
 		pkt_set(umem, &pkt_stream->pkts[i],
 			(i % umem->num_frames) * umem->frame_size + offset, pkt_len);
 
-	test->ifobj_tx->pkt_stream = pkt_stream;
-	test->ifobj_rx->pkt_stream = pkt_stream;
+	ifobj->pkt_stream = pkt_stream;
+}
+
+static void pkt_stream_replace_half(struct test_spec *test, u32 pkt_len, int offset)
+{
+	__pkt_stream_replace_half(test->ifobj_tx, pkt_len, offset);
+	__pkt_stream_replace_half(test->ifobj_rx, pkt_len, offset);
 }
 
 static void pkt_stream_receive_half(struct test_spec *test)
@@ -659,7 +671,8 @@  static struct pkt *pkt_generate(struct ifobject *ifobject, u32 pkt_nb)
 	return pkt;
 }
 
-static void pkt_stream_generate_custom(struct test_spec *test, struct pkt *pkts, u32 nb_pkts)
+static void __pkt_stream_generate_custom(struct ifobject *ifobj,
+					 struct pkt *pkts, u32 nb_pkts)
 {
 	struct pkt_stream *pkt_stream;
 	u32 i;
@@ -668,15 +681,20 @@  static void pkt_stream_generate_custom(struct test_spec *test, struct pkt *pkts,
 	if (!pkt_stream)
 		exit_with_error(ENOMEM);
 
-	test->ifobj_tx->pkt_stream = pkt_stream;
-	test->ifobj_rx->pkt_stream = pkt_stream;
-
 	for (i = 0; i < nb_pkts; i++) {
-		pkt_stream->pkts[i].addr = pkts[i].addr;
+		pkt_stream->pkts[i].addr = pkts[i].addr + ifobj->umem->base_addr;
 		pkt_stream->pkts[i].len = pkts[i].len;
 		pkt_stream->pkts[i].payload = i;
 		pkt_stream->pkts[i].valid = pkts[i].valid;
 	}
+
+	ifobj->pkt_stream = pkt_stream;
+}
+
+static void pkt_stream_generate_custom(struct test_spec *test, struct pkt *pkts, u32 nb_pkts)
+{
+	__pkt_stream_generate_custom(test->ifobj_tx, pkts, nb_pkts);
+	__pkt_stream_generate_custom(test->ifobj_rx, pkts, nb_pkts);
 }
 
 static void pkt_dump(void *pkt, u32 len)
@@ -1745,7 +1763,8 @@  static bool is_xdp_supported(struct ifobject *ifobject)
 
 int main(int argc, char **argv)
 {
-	struct pkt_stream *pkt_stream_default;
+	struct pkt_stream *rx_pkt_stream_default;
+	struct pkt_stream *tx_pkt_stream_default;
 	struct ifobject *ifobj_tx, *ifobj_rx;
 	int modes = TEST_MODE_SKB + 1;
 	u32 i, j, failed_tests = 0;
@@ -1779,10 +1798,12 @@  int main(int argc, char **argv)
 		modes++;
 
 	test_spec_init(&test, ifobj_tx, ifobj_rx, 0);
-	pkt_stream_default = pkt_stream_generate(ifobj_tx->umem, DEFAULT_PKT_CNT, PKT_SIZE);
-	if (!pkt_stream_default)
+	tx_pkt_stream_default = pkt_stream_generate(ifobj_tx->umem, DEFAULT_PKT_CNT, PKT_SIZE);
+	rx_pkt_stream_default = pkt_stream_generate(ifobj_rx->umem, DEFAULT_PKT_CNT, PKT_SIZE);
+	if (!tx_pkt_stream_default || !rx_pkt_stream_default)
 		exit_with_error(ENOMEM);
-	test.pkt_stream_default = pkt_stream_default;
+	test.tx_pkt_stream_default = tx_pkt_stream_default;
+	test.rx_pkt_stream_default = rx_pkt_stream_default;
 
 	ksft_set_plan(modes * TEST_TYPE_MAX);
 
@@ -1796,7 +1817,8 @@  int main(int argc, char **argv)
 				failed_tests++;
 		}
 
-	pkt_stream_delete(pkt_stream_default);
+	pkt_stream_delete(tx_pkt_stream_default);
+	pkt_stream_delete(rx_pkt_stream_default);
 	ifobject_delete(ifobj_tx);
 	ifobject_delete(ifobj_rx);
 
diff --git a/tools/testing/selftests/bpf/xskxceiver.h b/tools/testing/selftests/bpf/xskxceiver.h
index ee97576757a9..8d1c31f127e7 100644
--- a/tools/testing/selftests/bpf/xskxceiver.h
+++ b/tools/testing/selftests/bpf/xskxceiver.h
@@ -99,6 +99,7 @@  struct xsk_umem_info {
 	u32 frame_headroom;
 	void *buffer;
 	u32 frame_size;
+	u32 base_addr;
 	bool unaligned_mode;
 };
 
@@ -159,7 +160,8 @@  struct ifobject {
 struct test_spec {
 	struct ifobject *ifobj_tx;
 	struct ifobject *ifobj_rx;
-	struct pkt_stream *pkt_stream_default;
+	struct pkt_stream *tx_pkt_stream_default;
+	struct pkt_stream *rx_pkt_stream_default;
 	u16 total_steps;
 	u16 current_step;
 	u16 nb_sockets;