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From: Magnus Karlsson <magnus.karlsson@gmail.com>
To: magnus.karlsson@intel.com, bjorn@kernel.org, ast@kernel.org,
	daniel@iogearbox.net, netdev@vger.kernel.org,
	maciej.fijalkowski@intel.com
Cc: jonathan.lemon@gmail.com, ciara.loftus@intel.com,
	joamaki@gmail.com, bpf@vger.kernel.org, yhs@fb.com,
	andrii@kernel.org
Subject: [PATCH bpf-next 08/17] selftests: xsk: disassociate umem size with packets sent
Date: Tue, 27 Jul 2021 15:17:44 +0200	[thread overview]
Message-ID: <20210727131753.10924-9-magnus.karlsson@gmail.com> (raw)
In-Reply-To: <20210727131753.10924-1-magnus.karlsson@gmail.com>

From: Magnus Karlsson <magnus.karlsson@intel.com>

Disassociate the number of packets sent with the number of buffers in
the umem. This so we can loop over the umem to test more things. Set
the size of the umem to be a multiple of 2M. A requirement for huge
pages that are needed in unaligned mode.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
---
 tools/testing/selftests/bpf/xdpxceiver.c | 18 ++++++++----------
 tools/testing/selftests/bpf/xdpxceiver.h |  2 +-
 2 files changed, 9 insertions(+), 11 deletions(-)

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index b77ee9bb91e1..4c9f38e9a268 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -250,7 +250,7 @@ static void gen_eth_frame(struct xsk_umem_info *umem, u64 addr)
 	memcpy(xsk_umem__get_data(umem->buffer, addr), pkt_data, PKT_SIZE);
 }
 
-static void xsk_configure_umem(struct ifobject *data, void *buffer, int idx)
+static void xsk_configure_umem(struct ifobject *data, void *buffer, u64 size, int idx)
 {
 	const struct rlimit _rlim = { RLIM_INFINITY, RLIM_INFINITY };
 	struct xsk_umem_config cfg = {
@@ -260,7 +260,6 @@ static void xsk_configure_umem(struct ifobject *data, void *buffer, int idx)
 		.frame_headroom = frame_headroom,
 		.flags = XSK_UMEM__DEFAULT_FLAGS
 	};
-	int size = num_frames * XSK_UMEM__DEFAULT_FRAME_SIZE;
 	struct xsk_umem_info *umem;
 	int ret;
 
@@ -727,22 +726,23 @@ static void worker_pkt_validate(void)
 
 static void thread_common_ops(struct ifobject *ifobject, void *bufs)
 {
-	int umem_sz = num_frames * XSK_UMEM__DEFAULT_FRAME_SIZE;
+	u64 umem_sz = num_frames * XSK_UMEM__DEFAULT_FRAME_SIZE;
+	int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE;
+	size_t mmap_sz = umem_sz;
 	int ctr = 0;
 	int ret;
 
 	ifobject->ns_fd = switch_namespace(ifobject->nsname);
 
 	if (test_type == TEST_TYPE_BPF_RES)
-		umem_sz *= 2;
+		mmap_sz *= 2;
 
-	bufs = mmap(NULL, umem_sz,
-		    PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+	bufs = mmap(NULL, mmap_sz, PROT_READ | PROT_WRITE, mmap_flags, -1, 0);
 	if (bufs == MAP_FAILED)
 		exit_with_error(errno);
 
 	while (ctr++ < SOCK_RECONF_CTR) {
-		xsk_configure_umem(ifobject, bufs, 0);
+		xsk_configure_umem(ifobject, bufs, umem_sz, 0);
 		ifobject->umem = ifobject->umem_arr[0];
 		ret = xsk_configure_socket(ifobject, 0);
 		if (!ret)
@@ -758,7 +758,7 @@ static void thread_common_ops(struct ifobject *ifobject, void *bufs)
 	ifobject->xsk = ifobject->xsk_arr[0];
 
 	if (test_type == TEST_TYPE_BPF_RES) {
-		xsk_configure_umem(ifobject, (u8 *)bufs + (umem_sz / 2), 1);
+		xsk_configure_umem(ifobject, (u8 *)bufs + umem_sz, umem_sz, 1);
 		ifobject->umem = ifobject->umem_arr[1];
 		ret = xsk_configure_socket(ifobject, 1);
 	}
@@ -1095,8 +1095,6 @@ int main(int argc, char **argv)
 
 	parse_command_line(argc, argv);
 
-	num_frames = ++opt_pkt_count;
-
 	init_iface(ifdict[0], MAC1, MAC2, IP1, IP2, UDP_PORT1, UDP_PORT2, tx);
 	init_iface(ifdict[1], MAC2, MAC1, IP2, IP1, UDP_PORT2, UDP_PORT1, rx);
 
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index a4371d9e2798..131bd998e374 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -70,7 +70,7 @@ enum STAT_TEST_TYPES {
 
 static int configured_mode = TEST_MODE_UNCONFIGURED;
 static u8 debug_pkt_dump;
-static u32 num_frames;
+static u32 num_frames = DEFAULT_PKT_CNT / 4;
 static bool second_step;
 static int test_type;
 
-- 
2.29.0


  parent reply	other threads:[~2021-07-27 13:18 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-27 13:17 [PATCH bpf-next 00/17] selftests: xsk: various simplifications Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 01/17] selftests: xsk: remove color mode Magnus Karlsson
2021-07-27 16:43   ` Yonghong Song
2021-07-28  6:12     ` Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 02/17] selftests: xsk: remove the num_tx_packets option Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 03/17] selftests: xsk: remove unused variables Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 04/17] selftests: xsk: set rlimit per thread Magnus Karlsson
2021-07-27 18:39   ` Yonghong Song
2021-07-28  6:13     ` Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 05/17] selftests: xsk: return correct error codes Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 06/17] selftests: xsk: simplify the retry code Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 07/17] selftests: xsk: remove end-of-test packet Magnus Karlsson
2021-07-27 13:17 ` Magnus Karlsson [this message]
2021-07-27 13:17 ` [PATCH bpf-next 09/17] selftests: xsk: rename worker_* functions that are not thred entry points Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 10/17] selftests: xsk: simplify packet validation in xsk tests Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 11/17] selftests: xsk: validate tx stats on tx thread Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 12/17] selftests: xsk: decrease batch size Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 13/17] selftests: xsk: remove cleanup at end of program Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 14/17] selftests: xsk: generate packet directly in umem Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 15/17] selftests: xsk: generate packets from specification Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 16/17] selftests: xsk: make enums lower case Magnus Karlsson
2021-07-27 13:17 ` [PATCH bpf-next 17/17] selftests: xsk: preface options with opt Magnus Karlsson

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