From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A108427F749; Wed, 4 Feb 2026 14:57:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770217029; cv=none; b=X/NoTiIAQ0laSr5UHyFB1TfxpBbqM9i7BpqykmW9CJeMCFnGdfpfpuEq/jRhJy+uwH6nGlotcFwWi3wV8nbZbTe+KlsK56sipB/Kx+7IcHUor6bG153yZMyovYE03R+40qpyQa34YRbJBPkJgOBg4PdLOOjiXw3AUdbcDO2OehM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770217029; c=relaxed/simple; bh=owp8SUyoLDuoYXBQFbGTof3YVHWIT+HOf81CobxHJPg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ryTpos+3deQa9ck46fl94lP7FpgSrDcF1yGXCOvO6rxhjeOvzFEKSdn3n2VkFnVOrTfL0Jy02sbR2bm86K5bFnQwglZk6gb9uBFJkDw2qAVGHDJgAgyDwZsltD7DtvsvgRpXqiUSFIcOa6uRXEmkJCvwLoUvwVqwgujBAgyMjPU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Ysr0UeaR; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Ysr0UeaR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ECADEC4CEF7; Wed, 4 Feb 2026 14:57:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1770217029; bh=owp8SUyoLDuoYXBQFbGTof3YVHWIT+HOf81CobxHJPg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ysr0UeaR4wICkLhW6WVfTAkGoFatca2299n9CappBPqUYKkA4wnki5PuJGSdL2Eht CAJVu1gi797E0SkoANGniA4jfcVweBOUewSdItmOoSB/ryIqg/pbYslueiWzASRRzU nvxXgBQllDy2ppus1r9LdHvDOW8SLJoO8s22jdKE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ratheesh Kannoth , Jakub Kicinski , Sasha Levin Subject: [PATCH 5.15 103/206] octeontx2-af: Fix error handling Date: Wed, 4 Feb 2026 15:38:54 +0100 Message-ID: <20260204143901.920418037@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260204143858.193781818@linuxfoundation.org> References: <20260204143858.193781818@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ratheesh Kannoth [ Upstream commit 19e4175e997a5b85eab97d522f00cc99abd1873c ] This commit adds error handling and rollback logic to rvu_mbox_handler_attach_resources() to properly clean up partially attached resources when rvu_attach_block() fails. Fixes: 746ea74241fa0 ("octeontx2-af: Add RVU block LF provisioning support") Signed-off-by: Ratheesh Kannoth Link: https://patch.msgid.link/20260121033934.1900761-1-rkannoth@marvell.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- .../net/ethernet/marvell/octeontx2/af/rvu.c | 86 ++++++++++++++----- 1 file changed, 64 insertions(+), 22 deletions(-) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c index 0863fa06c06d1..53f742a507dbe 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c @@ -1455,8 +1455,8 @@ static int rvu_get_attach_blkaddr(struct rvu *rvu, int blktype, return -ENODEV; } -static void rvu_attach_block(struct rvu *rvu, int pcifunc, int blktype, - int num_lfs, struct rsrc_attach *attach) +static int rvu_attach_block(struct rvu *rvu, int pcifunc, int blktype, + int num_lfs, struct rsrc_attach *attach) { struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc); struct rvu_hwinfo *hw = rvu->hw; @@ -1466,21 +1466,21 @@ static void rvu_attach_block(struct rvu *rvu, int pcifunc, int blktype, u64 cfg; if (!num_lfs) - return; + return -EINVAL; blkaddr = rvu_get_attach_blkaddr(rvu, blktype, pcifunc, attach); if (blkaddr < 0) - return; + return -EFAULT; block = &hw->block[blkaddr]; if (!block->lf.bmap) - return; + return -ESRCH; for (slot = 0; slot < num_lfs; slot++) { /* Allocate the resource */ lf = rvu_alloc_rsrc(&block->lf); if (lf < 0) - return; + return -EFAULT; cfg = (1ULL << 63) | (pcifunc << 8) | slot; rvu_write64(rvu, blkaddr, block->lfcfg_reg | @@ -1491,6 +1491,8 @@ static void rvu_attach_block(struct rvu *rvu, int pcifunc, int blktype, /* Set start MSIX vector for this LF within this PF/VF */ rvu_set_msix_offset(rvu, pfvf, block, lf); } + + return 0; } static int rvu_check_rsrc_availability(struct rvu *rvu, @@ -1628,22 +1630,31 @@ int rvu_mbox_handler_attach_resources(struct rvu *rvu, int err; /* If first request, detach all existing attached resources */ - if (!attach->modify) - rvu_detach_rsrcs(rvu, NULL, pcifunc); + if (!attach->modify) { + err = rvu_detach_rsrcs(rvu, NULL, pcifunc); + if (err) + return err; + } mutex_lock(&rvu->rsrc_lock); /* Check if the request can be accommodated */ err = rvu_check_rsrc_availability(rvu, attach, pcifunc); if (err) - goto exit; + goto fail1; /* Now attach the requested resources */ - if (attach->npalf) - rvu_attach_block(rvu, pcifunc, BLKTYPE_NPA, 1, attach); + if (attach->npalf) { + err = rvu_attach_block(rvu, pcifunc, BLKTYPE_NPA, 1, attach); + if (err) + goto fail1; + } - if (attach->nixlf) - rvu_attach_block(rvu, pcifunc, BLKTYPE_NIX, 1, attach); + if (attach->nixlf) { + err = rvu_attach_block(rvu, pcifunc, BLKTYPE_NIX, 1, attach); + if (err) + goto fail2; + } if (attach->sso) { /* RVU func doesn't know which exact LF or slot is attached @@ -1653,33 +1664,64 @@ int rvu_mbox_handler_attach_resources(struct rvu *rvu, */ if (attach->modify) rvu_detach_block(rvu, pcifunc, BLKTYPE_SSO); - rvu_attach_block(rvu, pcifunc, BLKTYPE_SSO, - attach->sso, attach); + err = rvu_attach_block(rvu, pcifunc, BLKTYPE_SSO, + attach->sso, attach); + if (err) + goto fail3; } if (attach->ssow) { if (attach->modify) rvu_detach_block(rvu, pcifunc, BLKTYPE_SSOW); - rvu_attach_block(rvu, pcifunc, BLKTYPE_SSOW, - attach->ssow, attach); + err = rvu_attach_block(rvu, pcifunc, BLKTYPE_SSOW, + attach->ssow, attach); + if (err) + goto fail4; } if (attach->timlfs) { if (attach->modify) rvu_detach_block(rvu, pcifunc, BLKTYPE_TIM); - rvu_attach_block(rvu, pcifunc, BLKTYPE_TIM, - attach->timlfs, attach); + err = rvu_attach_block(rvu, pcifunc, BLKTYPE_TIM, + attach->timlfs, attach); + if (err) + goto fail5; } if (attach->cptlfs) { if (attach->modify && rvu_attach_from_same_block(rvu, BLKTYPE_CPT, attach)) rvu_detach_block(rvu, pcifunc, BLKTYPE_CPT); - rvu_attach_block(rvu, pcifunc, BLKTYPE_CPT, - attach->cptlfs, attach); + err = rvu_attach_block(rvu, pcifunc, BLKTYPE_CPT, + attach->cptlfs, attach); + if (err) + goto fail6; } -exit: + mutex_unlock(&rvu->rsrc_lock); + return 0; + +fail6: + if (attach->timlfs) + rvu_detach_block(rvu, pcifunc, BLKTYPE_TIM); + +fail5: + if (attach->ssow) + rvu_detach_block(rvu, pcifunc, BLKTYPE_SSOW); + +fail4: + if (attach->sso) + rvu_detach_block(rvu, pcifunc, BLKTYPE_SSO); + +fail3: + if (attach->nixlf) + rvu_detach_block(rvu, pcifunc, BLKTYPE_NIX); + +fail2: + if (attach->npalf) + rvu_detach_block(rvu, pcifunc, BLKTYPE_NPA); + +fail1: mutex_unlock(&rvu->rsrc_lock); return err; } -- 2.51.0