From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 299F03563E1; Sat, 17 Oct 2026 15:56:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792252606; cv=none; b=XHKpKX8MPh+A61fkY5i6eMVuSNg9I4qCAyWiwxT6wRGW+irRBslwYCsVxK1x+WfySX2mVmrnpuhOkeJdjMNreOJoplS7uwYv//THXlw7k+3gdcgf/ie9T/VFB+meODS7yPHUS9bNmXAD9Csll1VVWh9XXUn89gLoBmnT3WUCGZc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792252606; c=relaxed/simple; bh=TUGgdcciNbK82afZbAtKDSj1rdLQOHLaZRsMTaLY7R0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mdIa6ZZPEl5r1aCgHbY/PnbI5mrYSaPTZXeEWkg1SAMAJEkg7OOmoYClF+mNl4DPDlAaNQW204tC/p5q3nhlsd41fplLY/ubWPsk0TcxngJ6fqfIoBY8BYTSpUkJmoo7bkj1MuheYwn3Qy0lzJbNGgQ1ez+WX9yb2r+d+ZKItb4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=dv1scmAa; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="dv1scmAa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 778421F000C4; Sat, 17 Oct 2026 15:56:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792252605; bh=OHJRN+kMlzgXliqDGDWyyxRtxwPxOZFQSkU5IYuI6zw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=dv1scmAa6crmNfTErK1ziS3AMxBUGz5PTrDO0Pan7R03qMRCoZyGDq9Uf+yjtusmO AUkdZ1wtr8bD5aSiVY7/DCu0iNPgeboKDktavpO+iLIOEs58sgeNhHF5icwiHiqINR SRpbBJN/oOjJvPi7dCQwK55Z539YUfsUvfW12IRE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Aleksandr Loktionov , Larysa Zaremba , Jakub Kicinski , Sasha Levin Subject: [PATCH 6.18 36/52] ice: fix rxq info registering in mbuf packets Date: Sat, 17 Oct 2026 17:54:37 +0200 Message-ID: <20261017155106.008130387@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261017155104.830766652@linuxfoundation.org> References: <20261017155104.830766652@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Larysa Zaremba [ Upstream commit 02852b47c706772af795d3e28fca99fc9b923b2c ] XDP RxQ info contains frag_size, which depends on the MTU. This makes the old way of registering RxQ info before calculating new buffer sizes invalid. Currently, it leads to frag_size being outdated, making it sometimes impossible to grow tailroom in a mbuf packet. E.g. fragments are actually 3K+, but frag size is still as if MTU was 1500. Always register new XDP RxQ info after reconfiguring memory pools. Fixes: 2fba7dc5157b ("ice: Add support for XDP multi-buffer on Rx side") Reviewed-by: Aleksandr Loktionov Signed-off-by: Larysa Zaremba Link: https://patch.msgid.link/20260305111253.2317394-4-larysa.zaremba@intel.com Signed-off-by: Jakub Kicinski Stable-dep-of: e142dc4ef0f4 ("ice: change XDP RxQ frag_size from DMA write length to xdp.frame_sz") Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/ice/ice_base.c | 25 +++++--------------- drivers/net/ethernet/intel/ice/ice_ethtool.c | 1 + drivers/net/ethernet/intel/ice/ice_txrx.c | 8 +++++++ drivers/net/ethernet/intel/ice/ice_xsk.c | 3 +++ 4 files changed, 18 insertions(+), 19 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_base.c b/drivers/net/ethernet/intel/ice/ice_base.c index f0aa26144deb5..9436bdff607e5 100644 --- a/drivers/net/ethernet/intel/ice/ice_base.c +++ b/drivers/net/ethernet/intel/ice/ice_base.c @@ -631,19 +631,8 @@ static int ice_vsi_cfg_rxq(struct ice_rx_ring *ring) if (ring->vsi->type == ICE_VSI_PF || ring->vsi->type == ICE_VSI_SF || ring->vsi->type == ICE_VSI_LB) { - if (!xdp_rxq_info_is_reg(&ring->xdp_rxq)) { - err = __xdp_rxq_info_reg(&ring->xdp_rxq, ring->netdev, - ring->q_index, - ring->q_vector->napi.napi_id, - ICE_RXBUF_3072); - if (err) - return err; - } - ice_rx_xsk_pool(ring); if (ring->xsk_pool) { - xdp_rxq_info_unreg(&ring->xdp_rxq); - rx_buf_len = xsk_pool_get_rx_frame_size(ring->xsk_pool); err = __xdp_rxq_info_reg(&ring->xdp_rxq, ring->netdev, @@ -663,14 +652,12 @@ static int ice_vsi_cfg_rxq(struct ice_rx_ring *ring) dev_info(dev, "Registered XDP mem model MEM_TYPE_XSK_BUFF_POOL on Rx ring %d\n", ring->q_index); } else { - if (!xdp_rxq_info_is_reg(&ring->xdp_rxq)) { - err = __xdp_rxq_info_reg(&ring->xdp_rxq, ring->netdev, - ring->q_index, - ring->q_vector->napi.napi_id, - ICE_RXBUF_3072); - if (err) - return err; - } + err = __xdp_rxq_info_reg(&ring->xdp_rxq, ring->netdev, + ring->q_index, + ring->q_vector->napi.napi_id, + ICE_RXBUF_3072); + if (err) + return err; err = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq, MEM_TYPE_PAGE_SHARED, diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c index 5490c5e547b4d..558733788cc1f 100644 --- a/drivers/net/ethernet/intel/ice/ice_ethtool.c +++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c @@ -3309,6 +3309,7 @@ ice_set_ringparam(struct net_device *netdev, struct ethtool_ringparam *ring, rx_rings[i].cached_phctime = pf->ptp.cached_phc_time; rx_rings[i].desc = NULL; rx_rings[i].rx_buf = NULL; + rx_rings[i].xdp_rxq = (struct xdp_rxq_info){ }; /* this is to allow wr32 to have something to write to * during early allocation of Rx buffers */ diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c index 2447cccaeafd9..df5083f588611 100644 --- a/drivers/net/ethernet/intel/ice/ice_txrx.c +++ b/drivers/net/ethernet/intel/ice/ice_txrx.c @@ -556,6 +556,14 @@ void ice_clean_rx_ring(struct ice_rx_ring *rx_ring) rx_buf->page_offset = 0; } + if ((rx_ring->vsi->type == ICE_VSI_PF || + rx_ring->vsi->type == ICE_VSI_SF || + rx_ring->vsi->type == ICE_VSI_LB) && + xdp_rxq_info_is_reg(&rx_ring->xdp_rxq)) { + xdp_rxq_info_detach_mem_model(&rx_ring->xdp_rxq); + xdp_rxq_info_unreg(&rx_ring->xdp_rxq); + } + rx_skip_free: if (rx_ring->xsk_pool) memset(rx_ring->xdp_buf, 0, array_size(rx_ring->count, sizeof(*rx_ring->xdp_buf))); diff --git a/drivers/net/ethernet/intel/ice/ice_xsk.c b/drivers/net/ethernet/intel/ice/ice_xsk.c index b25bc5ba40abf..4a7f999f4355d 100644 --- a/drivers/net/ethernet/intel/ice/ice_xsk.c +++ b/drivers/net/ethernet/intel/ice/ice_xsk.c @@ -936,6 +936,9 @@ void ice_xsk_clean_rx_ring(struct ice_rx_ring *rx_ring) u16 ntc = rx_ring->next_to_clean; u16 ntu = rx_ring->next_to_use; + if (xdp_rxq_info_is_reg(&rx_ring->xdp_rxq)) + xdp_rxq_info_unreg(&rx_ring->xdp_rxq); + while (ntc != ntu) { struct xdp_buff *xdp = *ice_xdp_buf(rx_ring, ntc); -- 2.53.0