From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from www62.your-server.de (www62.your-server.de [213.133.104.62]) (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 6E50427A91D; Wed, 15 Oct 2025 14:02:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.133.104.62 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760536938; cv=none; b=GjQDSRH2zxY01UzclG/wde0GQtsPV9l5OegANY1AWPDjCYG/l5/w6S2KjopYIzn4pRC+b8pDS/QUO5t1pTA64idkZas+md418Q2+Fv+uGKbyLLAm7E30YEwV8SsFbei+8BwAa5LHAgWINBdAsLMDmKcSLbawxA9dS2ZoiLouFgA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760536938; c=relaxed/simple; bh=v//9FhWfw6qyKrGEtF9u5BanJY7egLJ+MpBOb4qEkjg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JVsdmuyS1DwQ3BRytsWtlJCCNWrLwXIqy2cIi1Vd0CXSzGyuaJbqETUdoNPLwtetUKOSJ2ZxpjDVfRrAQIcBaLLIQe8UDuyq0YlXAopO9Ca7tXDqN95QsbrHgFGF8PmYE7RTFAI0u1xURk8rUavvYCcsYmjdRQUegix+DeXCKY0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=iogearbox.net; spf=pass smtp.mailfrom=iogearbox.net; dkim=pass (2048-bit key) header.d=iogearbox.net header.i=@iogearbox.net header.b=BN2q6xKG; arc=none smtp.client-ip=213.133.104.62 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=iogearbox.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=iogearbox.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=iogearbox.net header.i=@iogearbox.net header.b="BN2q6xKG" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=iogearbox.net; s=default2302; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID; bh=ioqZ5xXI5MymnaQTGznv4dmvRm+JadJ0INiqrmzTJTY=; b=BN2q6xKGHZdGQhsDAX922M92zI a3J5yZvTvu8eL2PEewg6iLVjTeSNXVdYS4qqza9dB91EFygjBJMDZhFMvKi7cgLtj1RcfAWYTIKth ck5pjZjGjU9OJEE82NcojqvB5dKMLn0Q9VaGSBp0xEJSjuKlJXzZ9Y0WXBzxYzIjnG+/4eYiCAx2u cIEPO63Tqh3ssbIEQnzPqCZvtbyEEExpPWQAwXW3Tll6DcXCS/NQy6xcQrPhrbHwMsg8SqTSg70if 8BwLnBmBFMSx2fWxW+GTtc1RzJB1dS9weeJlTSTyV2pC8GsDUUhOIhmG3Z05yX3lLN0i+J+xMp9PP Bdx9nTvw==; Received: from localhost ([127.0.0.1]) by www62.your-server.de with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.96.2) (envelope-from ) id 1v924d-000H7a-0k; Wed, 15 Oct 2025 16:01:51 +0200 From: Daniel Borkmann To: netdev@vger.kernel.org Cc: bpf@vger.kernel.org, kuba@kernel.org, davem@davemloft.net, razor@blackwall.org, pabeni@redhat.com, willemb@google.com, sdf@fomichev.me, john.fastabend@gmail.com, martin.lau@kernel.org, jordan@jrife.io, maciej.fijalkowski@intel.com, magnus.karlsson@intel.com, dw@davidwei.uk, toke@redhat.com, yangzhenze@bytedance.com, wangdongdong.6@bytedance.com Subject: [PATCH net-next v2 08/15] xsk: Add small helper xp_pool_bindable Date: Wed, 15 Oct 2025 16:01:33 +0200 Message-ID: <20251015140140.62273-9-daniel@iogearbox.net> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251015140140.62273-1-daniel@iogearbox.net> References: <20251015140140.62273-1-daniel@iogearbox.net> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Virus-Scanned: Clear (ClamAV 1.0.9/27793/Wed Oct 15 11:29:40 2025) Add another small helper called xp_pool_bindable and move the current dev_get_min_mp_channel_count test into this helper. Pass in the pool object, such that we derive the netdev from the prior registered pool. Signed-off-by: Daniel Borkmann Co-developed-by: David Wei Signed-off-by: David Wei --- net/xdp/xsk_buff_pool.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/net/xdp/xsk_buff_pool.c b/net/xdp/xsk_buff_pool.c index 62a176996f02..701be6a5b074 100644 --- a/net/xdp/xsk_buff_pool.c +++ b/net/xdp/xsk_buff_pool.c @@ -54,6 +54,11 @@ int xp_alloc_tx_descs(struct xsk_buff_pool *pool, struct xdp_sock *xs) return 0; } +static bool xp_pool_bindable(struct xsk_buff_pool *pool) +{ + return dev_get_min_mp_channel_count(pool->netdev) == 0; +} + struct xsk_buff_pool *xp_create_and_assign_umem(struct xdp_sock *xs, struct xdp_umem *umem) { @@ -204,7 +209,7 @@ int xp_assign_dev(struct xsk_buff_pool *pool, goto err_unreg_pool; } - if (dev_get_min_mp_channel_count(netdev)) { + if (!xp_pool_bindable(pool)) { err = -EBUSY; goto err_unreg_pool; } -- 2.43.0