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 67A826F2FE; Thu, 12 Dec 2024 15:33:42 +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=1734017622; cv=none; b=b+T9AdcVZuret9/udiIrOiRNRMD6JBOoHvBHZ9fzEmW7+tb5+1SXVgQNbmi81t/yXb95Nvkgw7zgD8UHaAU+63wKd93TYRiPKrhJ9iNnjazo948Qqbadf16Nz3RpgCP5pmEQkgOSFmQET2BK2o3ozDucDXTtBzNoXKw11XyOuuU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734017622; c=relaxed/simple; bh=/QgT0j4RPSMXNeFemPc04WkYNQ4RpRGkgwcJ0JhDarE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RZr7DhF8CMWdt3cp+guR0fFOfW+LDnyvX8vY9EiePpjBV/ogdIsxwu0Cjf1pcgIzuLetSH6qffUh3sqjbFopJ6g707ioW5HfW9PhpxEYCQOQhpxyB4dw9Ywrooa4q01f4QYhXx4sQxbiMEmjTdfR9yCf5+o7YaC7FZyTG9pLJKw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=qxbGUgQR; 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="qxbGUgQR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 79440C4CECE; Thu, 12 Dec 2024 15:33:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1734017622; bh=/QgT0j4RPSMXNeFemPc04WkYNQ4RpRGkgwcJ0JhDarE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qxbGUgQR+GE6PsDwxQVgEohfcDL6iQ/SZJpmN7Q6XnRALgrYy7wIb2KlQCyqYO1hR /F1LB6fdkWjN5olees02p6AemPZn+M4+GI0q/sReBda/AsxCNMs+rrcyuVWjfwLYgJ FiXiMDM+TvNnwM//fLJPWQykNrifVgTMRp76A3hE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Alexandra Winter , Wen Gu , "David S. Miller" , Sasha Levin Subject: [PATCH 6.6 035/356] net/smc: introduce sub-functions for smc_clc_send_confirm_accept() Date: Thu, 12 Dec 2024 15:55:54 +0100 Message-ID: <20241212144246.015345100@linuxfoundation.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241212144244.601729511@linuxfoundation.org> References: <20241212144244.601729511@linuxfoundation.org> User-Agent: quilt/0.67 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 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Wen Gu [ Upstream commit 5205ac4483b630e47c65f192a3ac19be7a8ea648 ] There is a large if-else block in smc_clc_send_confirm_accept() and it is better to split it into two sub-functions. Suggested-by: Alexandra Winter Signed-off-by: Wen Gu Reviewed-by: Alexandra Winter Signed-off-by: David S. Miller Stable-dep-of: 0541db8ee32c ("net/smc: initialize close_work early to avoid warning") Signed-off-by: Sasha Levin --- net/smc/smc_clc.c | 197 +++++++++++++++++++++++++++------------------- 1 file changed, 115 insertions(+), 82 deletions(-) diff --git a/net/smc/smc_clc.c b/net/smc/smc_clc.c index b34aff73ada4c..d471a06baac32 100644 --- a/net/smc/smc_clc.c +++ b/net/smc/smc_clc.c @@ -1007,6 +1007,112 @@ int smc_clc_send_proposal(struct smc_sock *smc, struct smc_init_info *ini) return reason_code; } +static void +smcd_clc_prep_confirm_accept(struct smc_connection *conn, + struct smc_clc_msg_accept_confirm_v2 *clc_v2, + int first_contact, u8 version, + u8 *eid, struct smc_init_info *ini, + int *fce_len, + struct smc_clc_first_contact_ext_v2x *fce_v2x, + struct smc_clc_msg_trail *trl) +{ + struct smcd_dev *smcd = conn->lgr->smcd; + struct smc_clc_msg_accept_confirm *clc; + int len; + + /* SMC-D specific settings */ + clc = (struct smc_clc_msg_accept_confirm *)clc_v2; + memcpy(clc->hdr.eyecatcher, SMCD_EYECATCHER, + sizeof(SMCD_EYECATCHER)); + clc->hdr.typev1 = SMC_TYPE_D; + clc->d0.gid = htonll(smcd->ops->get_local_gid(smcd)); + clc->d0.token = htonll(conn->rmb_desc->token); + clc->d0.dmbe_size = conn->rmbe_size_comp; + clc->d0.dmbe_idx = 0; + memcpy(&clc->d0.linkid, conn->lgr->id, SMC_LGR_ID_SIZE); + if (version == SMC_V1) { + clc->hdr.length = htons(SMCD_CLC_ACCEPT_CONFIRM_LEN); + } else { + clc_v2->d1.chid = htons(smc_ism_get_chid(smcd)); + if (eid && eid[0]) + memcpy(clc_v2->d1.eid, eid, SMC_MAX_EID_LEN); + len = SMCD_CLC_ACCEPT_CONFIRM_LEN_V2; + if (first_contact) { + *fce_len = smc_clc_fill_fce_v2x(fce_v2x, ini); + len += *fce_len; + } + clc_v2->hdr.length = htons(len); + } + memcpy(trl->eyecatcher, SMCD_EYECATCHER, + sizeof(SMCD_EYECATCHER)); +} + +static void +smcr_clc_prep_confirm_accept(struct smc_connection *conn, + struct smc_clc_msg_accept_confirm_v2 *clc_v2, + int first_contact, u8 version, + u8 *eid, struct smc_init_info *ini, + int *fce_len, + struct smc_clc_first_contact_ext_v2x *fce_v2x, + struct smc_clc_fce_gid_ext *gle, + struct smc_clc_msg_trail *trl) +{ + struct smc_clc_msg_accept_confirm *clc; + struct smc_link *link = conn->lnk; + int len; + + /* SMC-R specific settings */ + clc = (struct smc_clc_msg_accept_confirm *)clc_v2; + memcpy(clc->hdr.eyecatcher, SMC_EYECATCHER, + sizeof(SMC_EYECATCHER)); + clc->hdr.typev1 = SMC_TYPE_R; + memcpy(clc->r0.lcl.id_for_peer, local_systemid, + sizeof(local_systemid)); + memcpy(&clc->r0.lcl.gid, link->gid, SMC_GID_SIZE); + memcpy(&clc->r0.lcl.mac, &link->smcibdev->mac[link->ibport - 1], + ETH_ALEN); + hton24(clc->r0.qpn, link->roce_qp->qp_num); + clc->r0.rmb_rkey = + htonl(conn->rmb_desc->mr[link->link_idx]->rkey); + clc->r0.rmbe_idx = 1; /* for now: 1 RMB = 1 RMBE */ + clc->r0.rmbe_alert_token = htonl(conn->alert_token_local); + switch (clc->hdr.type) { + case SMC_CLC_ACCEPT: + clc->r0.qp_mtu = link->path_mtu; + break; + case SMC_CLC_CONFIRM: + clc->r0.qp_mtu = min(link->path_mtu, link->peer_mtu); + break; + } + clc->r0.rmbe_size = conn->rmbe_size_comp; + clc->r0.rmb_dma_addr = conn->rmb_desc->is_vm ? + cpu_to_be64((uintptr_t)conn->rmb_desc->cpu_addr) : + cpu_to_be64((u64)sg_dma_address + (conn->rmb_desc->sgt[link->link_idx].sgl)); + hton24(clc->r0.psn, link->psn_initial); + if (version == SMC_V1) { + clc->hdr.length = htons(SMCR_CLC_ACCEPT_CONFIRM_LEN); + } else { + if (eid && eid[0]) + memcpy(clc_v2->r1.eid, eid, SMC_MAX_EID_LEN); + len = SMCR_CLC_ACCEPT_CONFIRM_LEN_V2; + if (first_contact) { + *fce_len = smc_clc_fill_fce_v2x(fce_v2x, ini); + len += *fce_len; + fce_v2x->fce_v2_base.v2_direct = + !link->lgr->uses_gateway; + if (clc->hdr.type == SMC_CLC_CONFIRM) { + memset(gle, 0, sizeof(*gle)); + gle->gid_cnt = ini->smcrv2.gidlist.len; + len += sizeof(*gle); + len += gle->gid_cnt * sizeof(gle->gid[0]); + } + } + clc_v2->hdr.length = htons(len); + } + memcpy(trl->eyecatcher, SMC_EYECATCHER, sizeof(SMC_EYECATCHER)); +} + /* build and send CLC CONFIRM / ACCEPT message */ static int smc_clc_send_confirm_accept(struct smc_sock *smc, struct smc_clc_msg_accept_confirm_v2 *clc_v2, @@ -1015,11 +1121,10 @@ static int smc_clc_send_confirm_accept(struct smc_sock *smc, { struct smc_clc_first_contact_ext_v2x fce_v2x; struct smc_connection *conn = &smc->conn; - struct smcd_dev *smcd = conn->lgr->smcd; struct smc_clc_msg_accept_confirm *clc; struct smc_clc_fce_gid_ext gle; struct smc_clc_msg_trail trl; - int i, len, fce_len; + int i, fce_len; struct kvec vec[5]; struct msghdr msg; @@ -1028,86 +1133,14 @@ static int smc_clc_send_confirm_accept(struct smc_sock *smc, clc->hdr.version = version; /* SMC version */ if (first_contact) clc->hdr.typev2 |= SMC_FIRST_CONTACT_MASK; - if (conn->lgr->is_smcd) { - /* SMC-D specific settings */ - memcpy(clc->hdr.eyecatcher, SMCD_EYECATCHER, - sizeof(SMCD_EYECATCHER)); - clc->hdr.typev1 = SMC_TYPE_D; - clc->d0.gid = htonll(smcd->ops->get_local_gid(smcd)); - clc->d0.token = htonll(conn->rmb_desc->token); - clc->d0.dmbe_size = conn->rmbe_size_comp; - clc->d0.dmbe_idx = 0; - memcpy(&clc->d0.linkid, conn->lgr->id, SMC_LGR_ID_SIZE); - if (version == SMC_V1) { - clc->hdr.length = htons(SMCD_CLC_ACCEPT_CONFIRM_LEN); - } else { - clc_v2->d1.chid = htons(smc_ism_get_chid(smcd)); - if (eid && eid[0]) - memcpy(clc_v2->d1.eid, eid, SMC_MAX_EID_LEN); - len = SMCD_CLC_ACCEPT_CONFIRM_LEN_V2; - if (first_contact) { - fce_len = smc_clc_fill_fce_v2x(&fce_v2x, ini); - len += fce_len; - } - clc_v2->hdr.length = htons(len); - } - memcpy(trl.eyecatcher, SMCD_EYECATCHER, - sizeof(SMCD_EYECATCHER)); - } else { - struct smc_link *link = conn->lnk; - - /* SMC-R specific settings */ - memcpy(clc->hdr.eyecatcher, SMC_EYECATCHER, - sizeof(SMC_EYECATCHER)); - clc->hdr.typev1 = SMC_TYPE_R; - clc->hdr.length = htons(SMCR_CLC_ACCEPT_CONFIRM_LEN); - memcpy(clc->r0.lcl.id_for_peer, local_systemid, - sizeof(local_systemid)); - memcpy(&clc->r0.lcl.gid, link->gid, SMC_GID_SIZE); - memcpy(&clc->r0.lcl.mac, &link->smcibdev->mac[link->ibport - 1], - ETH_ALEN); - hton24(clc->r0.qpn, link->roce_qp->qp_num); - clc->r0.rmb_rkey = - htonl(conn->rmb_desc->mr[link->link_idx]->rkey); - clc->r0.rmbe_idx = 1; /* for now: 1 RMB = 1 RMBE */ - clc->r0.rmbe_alert_token = htonl(conn->alert_token_local); - switch (clc->hdr.type) { - case SMC_CLC_ACCEPT: - clc->r0.qp_mtu = link->path_mtu; - break; - case SMC_CLC_CONFIRM: - clc->r0.qp_mtu = min(link->path_mtu, link->peer_mtu); - break; - } - clc->r0.rmbe_size = conn->rmbe_size_comp; - clc->r0.rmb_dma_addr = conn->rmb_desc->is_vm ? - cpu_to_be64((uintptr_t)conn->rmb_desc->cpu_addr) : - cpu_to_be64((u64)sg_dma_address - (conn->rmb_desc->sgt[link->link_idx].sgl)); - hton24(clc->r0.psn, link->psn_initial); - if (version == SMC_V1) { - clc->hdr.length = htons(SMCR_CLC_ACCEPT_CONFIRM_LEN); - } else { - if (eid && eid[0]) - memcpy(clc_v2->r1.eid, eid, SMC_MAX_EID_LEN); - len = SMCR_CLC_ACCEPT_CONFIRM_LEN_V2; - if (first_contact) { - fce_len = smc_clc_fill_fce_v2x(&fce_v2x, ini); - len += fce_len; - fce_v2x.fce_v2_base.v2_direct = - !link->lgr->uses_gateway; - if (clc->hdr.type == SMC_CLC_CONFIRM) { - memset(&gle, 0, sizeof(gle)); - gle.gid_cnt = ini->smcrv2.gidlist.len; - len += sizeof(gle); - len += gle.gid_cnt * sizeof(gle.gid[0]); - } - } - clc_v2->hdr.length = htons(len); - } - memcpy(trl.eyecatcher, SMC_EYECATCHER, sizeof(SMC_EYECATCHER)); - } - + if (conn->lgr->is_smcd) + smcd_clc_prep_confirm_accept(conn, clc_v2, first_contact, + version, eid, ini, &fce_len, + &fce_v2x, &trl); + else + smcr_clc_prep_confirm_accept(conn, clc_v2, first_contact, + version, eid, ini, &fce_len, + &fce_v2x, &gle, &trl); memset(&msg, 0, sizeof(msg)); i = 0; vec[i].iov_base = clc_v2; -- 2.43.0