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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, ciara.loftus@intel.com
Cc: jonathan.lemon@gmail.com, bpf@vger.kernel.org,
	anthony.l.nguyen@intel.com
Subject: [PATCH bpf-next 09/13] selftests: xsk: fix socket creation retry
Date: Wed, 22 Sep 2021 09:56:09 +0200	[thread overview]
Message-ID: <20210922075613.12186-10-magnus.karlsson@gmail.com> (raw)
In-Reply-To: <20210922075613.12186-1-magnus.karlsson@gmail.com>

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

The socket creation retry unnecessarily registered the umem once for
every retry. No reason to do this. It wastes memory and it might lead
to too many pages being locked at some point and the failure of a
test.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
---
 tools/testing/selftests/bpf/xdpxceiver.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index c5c68b860ae0..aa5660dc0699 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -919,18 +919,17 @@ static void thread_common_ops(struct test_spec *test, struct ifobject *ifobject)
 		u64 umem_sz = ifobject->umem->num_frames * ifobject->umem->frame_size;
 		u32 ctr = 0;
 		void *bufs;
+		int ret;
 
 		bufs = mmap(NULL, umem_sz, PROT_READ | PROT_WRITE, mmap_flags, -1, 0);
 		if (bufs == MAP_FAILED)
 			exit_with_error(errno);
 
-		while (ctr++ < SOCK_RECONF_CTR) {
-			int ret;
-
-			ret = xsk_configure_umem(&ifobject->umem_arr[i], bufs, umem_sz);
-			if (ret)
-				exit_with_error(-ret);
+		ret = xsk_configure_umem(&ifobject->umem_arr[i], bufs, umem_sz);
+		if (ret)
+			exit_with_error(-ret);
 
+		while (ctr++ < SOCK_RECONF_CTR) {
 			ret = xsk_configure_socket(&ifobject->xsk_arr[i], &ifobject->umem_arr[i],
 						   ifobject, i);
 			if (!ret)
-- 
2.29.0


  parent reply	other threads:[~2021-09-22  7:57 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-22  7:56 [PATCH bpf-next 00/13] xsk: i40e: ice: introduce batching for Rx buffer allocation Magnus Karlsson
2021-09-22  7:56 ` [PATCH bpf-next 01/13] xsk: get rid of unused entry in struct xdp_buff_xsk Magnus Karlsson
2021-09-22  7:56 ` [PATCH bpf-next 02/13] xsk: batched buffer allocation for the pool Magnus Karlsson
2021-09-22  7:56 ` [PATCH bpf-next 03/13] ice: use xdp_buf instead of rx_buf for xsk zero-copy Magnus Karlsson
2021-09-22  7:56 ` [PATCH bpf-next 04/13] ice: use the xsk batched rx allocation interface Magnus Karlsson
2021-09-22  7:56 ` [PATCH bpf-next 05/13] i40e: " Magnus Karlsson
2021-09-22  7:56 ` [PATCH bpf-next 06/13] xsk: optimize for aligned case Magnus Karlsson
2021-09-28 23:15   ` Nathan Chancellor
2021-09-29  5:52     ` Magnus Karlsson
2021-09-29 15:33   ` kernel test robot
2021-09-22  7:56 ` [PATCH bpf-next 07/13] selftests: xsk: fix missing initialization Magnus Karlsson
2021-09-22  7:56 ` [PATCH bpf-next 08/13] selftests: xsk: put the same buffer only once in the fill ring Magnus Karlsson
2021-09-22  7:56 ` Magnus Karlsson [this message]
2021-09-22  7:56 ` [PATCH bpf-next 10/13] selftests: xsk: introduce pacing of traffic Magnus Karlsson
2021-09-22  7:56 ` [PATCH bpf-next 11/13] selftests: xsk: add single packet test Magnus Karlsson
2021-09-22  7:56 ` [PATCH bpf-next 12/13] selftests: xsk: change interleaving of packets in unaligned mode Magnus Karlsson
2021-09-22  7:56 ` [PATCH bpf-next 13/13] selftests: xsk: add frame_headroom test Magnus Karlsson
2021-09-27 22:30 ` [PATCH bpf-next 00/13] xsk: i40e: ice: introduce batching for Rx buffer allocation patchwork-bot+netdevbpf

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