From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 306393C1978; Mon, 23 Mar 2026 19:25:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.20 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774293931; cv=none; b=EkN6mvFZUlx14AmHKxHEDD/3yFFV+qWR70J1olDxbMQ0k58Y37TI4IgbFtXTpq1VEoyrheBNKnG/LETdLBCxm2kAp2iIuCMb6nwo/n+NhjX8wPZi5BLwXSgJ+qxy5j5pUaXTLYVNyXNpLfLWPPhSS6MWaL4Shblh6uNqZiPLBoU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774293931; c=relaxed/simple; bh=UNkNuqS2gKGIqlKemTtDj4KWy3fLQBUGxeOyGEk+i5Q=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=UiT1Qz9VwEnNsCKXAkILnw/pCiD6rkXGYpCocCrQ5PoUD0JskplrVAr92T/E0LcoTr7ZQCsVvNlr1XyFqQ8kaQobjHng9nhK5ve216O8/h2YA+btltsXEYeTK4e4kiZx1fIe6EywBfuBITpwnXh/5XXw4ad0+PCbE+8hbWqPGw0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=H7zEvMkP; arc=none smtp.client-ip=198.175.65.20 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="H7zEvMkP" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1774293931; x=1805829931; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=UNkNuqS2gKGIqlKemTtDj4KWy3fLQBUGxeOyGEk+i5Q=; b=H7zEvMkPNnqjR8RZFJuKmla8RGwZ29DrZlqIxPN1MLdLNXrMlfPdlpLm gdIMeE8UlBt+KiyQC1e8a4KShKjZHz+ELBe1ThL6eMmXv+9cyMlVK7Rzp ndTehWGuz5pBcLt3sqYCrPiEf10PuNycbYmRH8zz0zzfMIdOCr9W4J5T5 UB4yDUW+eRCUaIZKEvHmpi5eUn6/vy9eR4h2oSSj53fzGjO0Q1E8KkWD0 PizQYU2mhyWOmiU3ougtXaVsUvzYwp4hftvlF1R/25Kfq7JI+ea2TGbvS ri1aHUX0c+TGOgMaVWKEXXG+JtVU2uMGnjtGOvUsIMJyJJN8vWPpvpsK7 Q==; X-CSE-ConnectionGUID: hwW9pDtCQBSakSimauTUvA== X-CSE-MsgGUID: z2x876VcRyCXCetfI6RJqQ== X-IronPort-AV: E=McAfee;i="6800,10657,11738"; a="75013354" X-IronPort-AV: E=Sophos;i="6.23,137,1770624000"; d="scan'208";a="75013354" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Mar 2026 12:25:30 -0700 X-CSE-ConnectionGUID: qEyBmZXjRXW7/JP8u47JuQ== X-CSE-MsgGUID: fZh/VqkNT0WiYRSf6QGr2Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,137,1770624000"; d="scan'208";a="228187922" Received: from boxer.igk.intel.com ([10.102.20.173]) by orviesa003.jf.intel.com with ESMTP; 23 Mar 2026 12:25:28 -0700 From: Maciej Fijalkowski To: netdev@vger.kernel.org Cc: bpf@vger.kernel.org, magnus.karlsson@intel.com, stfomichev@gmail.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, larysa.zaremba@intel.com, aleksander.lobakin@intel.com, bjorn@kernel.org, Maciej Fijalkowski Subject: [PATCH v3 net 7/8] selftests: bpf: adjust rx_dropped xskxceiver's test to respect tailroom Date: Mon, 23 Mar 2026 20:24:56 +0100 Message-Id: <20260323192457.504631-8-maciej.fijalkowski@intel.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20260323192457.504631-1-maciej.fijalkowski@intel.com> References: <20260323192457.504631-1-maciej.fijalkowski@intel.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since we have changed how big user defined headroom in umem can be, change the logic in testapp_stats_rx_dropped() so we pass updated headroom validation in xdp_umem_reg() and still drop half of frames. Test works on non-mbuf setup so xsk_pool_get_rx_frame_size() that is called on xsk_rcv_check() will not account skb_shared_info size. Taking the tailroom size into account in test being fixed is needed as xdp_umem_reg() defaults to respect it. Reviewed-by: Björn Töpel Signed-off-by: Maciej Fijalkowski --- tools/testing/selftests/bpf/prog_tests/test_xsk.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/test_xsk.c b/tools/testing/selftests/bpf/prog_tests/test_xsk.c index 95cbbf425e9a..697b1502bf27 100644 --- a/tools/testing/selftests/bpf/prog_tests/test_xsk.c +++ b/tools/testing/selftests/bpf/prog_tests/test_xsk.c @@ -1984,10 +1984,10 @@ int testapp_stats_rx_dropped(struct test_spec *test) return TEST_SKIP; } - if (pkt_stream_replace_half(test, MIN_PKT_SIZE * 4, 0)) + if (pkt_stream_replace_half(test, (MIN_PKT_SIZE * 2) + XSK_UMEM__PACKET_TAILROOM, 0)) return TEST_FAILURE; test->ifobj_rx->umem->frame_headroom = test->ifobj_rx->umem->frame_size - - XDP_PACKET_HEADROOM - MIN_PKT_SIZE * 3; + XDP_PACKET_HEADROOM - (MIN_PKT_SIZE * 2) - XSK_UMEM__PACKET_TAILROOM - 1; if (pkt_stream_receive_half(test)) return TEST_FAILURE; test->ifobj_rx->validation_func = validate_rx_dropped; -- 2.43.0