From patchwork Wed Nov 29 20:25:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bob Pearson X-Patchwork-Id: 13473422 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="jqVfGl1g" Received: from mail-oo1-xc2c.google.com (mail-oo1-xc2c.google.com [IPv6:2607:f8b0:4864:20::c2c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8004410CB for ; Wed, 29 Nov 2023 12:26:27 -0800 (PST) Received: by mail-oo1-xc2c.google.com with SMTP id 006d021491bc7-58d521f12ebso135795eaf.2 for ; Wed, 29 Nov 2023 12:26:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1701289587; x=1701894387; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=XAo9Voy4RzHWA16EdVudg5saPOZLVlTIEuxiR5JPPMk=; b=jqVfGl1gBU8Qf31hppbyeJkdPj8ujPTBVDaD2CFl2bXF112FggWxFAl54dXOaIX944 dkSbKCoW/kHkIitbhhdrWaEkQBvplNbYt1LTrDUTOrWHKr9R4t5gaN87/tmUMbPkXm/o yKxD/zjcZC1E7A+FAiLZtpnQRg5zxlnmlfRGywAWI/aO5fbye9/oRJDpJVhgjVEG0uYs vdRabAlRUnWFMW1pTyBDCcnAJw9f66pa3WI+BxaSjFaavc20UqCOjHuFtOz/AouhkJcu HkCw3zxzjXpWaKkb4nkXJf3/69InFrmxPhQfcXUvhCvnd/vo2a2UtjyW3+l246O/TfyE O5oQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701289587; x=1701894387; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=XAo9Voy4RzHWA16EdVudg5saPOZLVlTIEuxiR5JPPMk=; b=Q69rMBQzfXxj05PvCqoW9z6JC4plp936Nkdi91xOqBPNRjMAIEYI9+5TvC8VFGzQ8p QHsT89nIFJ5yMTLRdtMXVpMB6gPEuPWif6tBjTqyiFtbc6eyhm6OX7g5aNGmrN2CgkUt hvJhA8uN6kJPkcmW8IZXrnswXK0X33oCvf7rvH+w62zce4rHSseLliJmcrjoqSfasfQt dHfdkbg+jjGIvup8fck/JafuZ0yquHlNT6NrJrDX97QZHoS0NU1bHJlbxYt2HdkyANZj 4IGsxOIHzMU4fPktrk/B6iletzbdEWYTbqJ1sBOWJ7MxaXEGFZhGcxUTVbFQHkgTlEXH 1BIQ== X-Gm-Message-State: AOJu0YxMJPapVdKYFB5vLIh6pIxqLtZzc5Gb89FIradVVqjEoiM6ayRT TJv1Vze9vAtLFnxXPTugZiI= X-Google-Smtp-Source: AGHT+IHqvYy8ziwtVI103lHQngpSHAmftbyUE1/KTJu79CXJnCk5uubNzJAKW+ZpSWk1MGuSB4+jIw== X-Received: by 2002:a05:6820:2204:b0:581:ea96:f800 with SMTP id cj4-20020a056820220400b00581ea96f800mr20877140oob.6.1701289586661; Wed, 29 Nov 2023 12:26:26 -0800 (PST) Received: from bob-3900x.lan (2603-8081-1405-679b-6755-34f8-2ed3-56ec.res6.spectrum.com. [2603:8081:1405:679b:6755:34f8:2ed3:56ec]) by smtp.gmail.com with ESMTPSA id 126-20020a4a0684000000b0058ab906ae38sm2473867ooj.2.2023.11.29.12.26.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Nov 2023 12:26:25 -0800 (PST) From: Bob Pearson To: jgg@nvidia.com, yanjun.zhu@linux.dev, linux-rdma@vger.kernel.org Cc: Bob Pearson Subject: [PATCH for-next v3 2/7] RDMA/rxe: Fix sending of mcast packets Date: Wed, 29 Nov 2023 14:25:54 -0600 Message-Id: <20231129202558.31682-3-rpearsonhpe@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231129202558.31682-1-rpearsonhpe@gmail.com> References: <20231129202558.31682-1-rpearsonhpe@gmail.com> Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Currently the rdma_rxe driver does not send mcast packets correctly. It uses the wrong qp number for the packets. Add a mask bit to indicate that a multicast packet has been locally sent and use to set the correct qpn for multicast packets and identify mcast packets when sending. Fixes: 8700e3e7c485 ("Soft RoCE driver") Signed-off-by: Bob Pearson --- drivers/infiniband/sw/rxe/rxe_av.c | 7 +++++++ drivers/infiniband/sw/rxe/rxe_loc.h | 1 + drivers/infiniband/sw/rxe/rxe_net.c | 4 +++- drivers/infiniband/sw/rxe/rxe_opcode.h | 2 +- drivers/infiniband/sw/rxe/rxe_recv.c | 4 ++++ drivers/infiniband/sw/rxe/rxe_req.c | 11 +++++++++-- 6 files changed, 25 insertions(+), 4 deletions(-) diff --git a/drivers/infiniband/sw/rxe/rxe_av.c b/drivers/infiniband/sw/rxe/rxe_av.c index 4ac17b8def28..022173eb5d75 100644 --- a/drivers/infiniband/sw/rxe/rxe_av.c +++ b/drivers/infiniband/sw/rxe/rxe_av.c @@ -7,6 +7,13 @@ #include "rxe.h" #include "rxe_loc.h" +bool rxe_is_mcast_av(struct rxe_av *av) +{ + struct in6_addr *daddr = (struct in6_addr *)av->grh.dgid.raw; + + return rdma_is_multicast_addr(daddr); +} + void rxe_init_av(struct rdma_ah_attr *attr, struct rxe_av *av) { rxe_av_from_attr(rdma_ah_get_port_num(attr), av, attr); diff --git a/drivers/infiniband/sw/rxe/rxe_loc.h b/drivers/infiniband/sw/rxe/rxe_loc.h index 3d2504a0ae56..62b2b25903fc 100644 --- a/drivers/infiniband/sw/rxe/rxe_loc.h +++ b/drivers/infiniband/sw/rxe/rxe_loc.h @@ -8,6 +8,7 @@ #define RXE_LOC_H /* rxe_av.c */ +bool rxe_is_mcast_av(struct rxe_av *av); void rxe_init_av(struct rdma_ah_attr *attr, struct rxe_av *av); int rxe_chk_ah_attr(struct rxe_dev *rxe, struct rdma_ah_attr *attr); void rxe_av_from_attr(u8 port_num, struct rxe_av *av, diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c index cd59666158b1..58c3f3759bf0 100644 --- a/drivers/infiniband/sw/rxe/rxe_net.c +++ b/drivers/infiniband/sw/rxe/rxe_net.c @@ -431,7 +431,9 @@ int rxe_xmit_packet(struct rxe_qp *qp, struct rxe_pkt_info *pkt, rxe_icrc_generate(skb, pkt); - if (pkt->mask & RXE_LOOPBACK_MASK) + if (pkt->mask & RXE_MCAST_MASK) + err = rxe_send(skb, pkt); + else if (pkt->mask & RXE_LOOPBACK_MASK) err = rxe_loopback(skb, pkt); else err = rxe_send(skb, pkt); diff --git a/drivers/infiniband/sw/rxe/rxe_opcode.h b/drivers/infiniband/sw/rxe/rxe_opcode.h index 5686b691d6b8..c4cf672ea26d 100644 --- a/drivers/infiniband/sw/rxe/rxe_opcode.h +++ b/drivers/infiniband/sw/rxe/rxe_opcode.h @@ -85,7 +85,7 @@ enum rxe_hdr_mask { RXE_END_MASK = BIT(NUM_HDR_TYPES + 11), RXE_LOOPBACK_MASK = BIT(NUM_HDR_TYPES + 12), - + RXE_MCAST_MASK = BIT(NUM_HDR_TYPES + 13), RXE_ATOMIC_WRITE_MASK = BIT(NUM_HDR_TYPES + 14), RXE_READ_OR_ATOMIC_MASK = (RXE_READ_MASK | RXE_ATOMIC_MASK), diff --git a/drivers/infiniband/sw/rxe/rxe_recv.c b/drivers/infiniband/sw/rxe/rxe_recv.c index 5861e4244049..7153de0799fc 100644 --- a/drivers/infiniband/sw/rxe/rxe_recv.c +++ b/drivers/infiniband/sw/rxe/rxe_recv.c @@ -217,6 +217,10 @@ static void rxe_rcv_mcast_pkt(struct rxe_dev *rxe, struct sk_buff *skb) list_for_each_entry(mca, &mcg->qp_list, qp_list) { qp = mca->qp; + /* don't reply packet to sender if locally sent */ + if (pkt->mask & RXE_MCAST_MASK && qp_num(qp) == deth_sqp(pkt)) + continue; + /* validate qp for incoming packet */ err = check_type_state(rxe, pkt, qp); if (err) diff --git a/drivers/infiniband/sw/rxe/rxe_req.c b/drivers/infiniband/sw/rxe/rxe_req.c index d8c41fd626a9..599bec88cb54 100644 --- a/drivers/infiniband/sw/rxe/rxe_req.c +++ b/drivers/infiniband/sw/rxe/rxe_req.c @@ -442,8 +442,12 @@ static struct sk_buff *init_req_packet(struct rxe_qp *qp, (pkt->mask & (RXE_WRITE_MASK | RXE_IMMDT_MASK)) == (RXE_WRITE_MASK | RXE_IMMDT_MASK)); - qp_num = (pkt->mask & RXE_DETH_MASK) ? ibwr->wr.ud.remote_qpn : - qp->attr.dest_qp_num; + if (pkt->mask & RXE_MCAST_MASK) + qp_num = IB_MULTICAST_QPN; + else if (pkt->mask & RXE_DETH_MASK) + qp_num = ibwr->wr.ud.remote_qpn; + else + qp_num = qp->attr.dest_qp_num; ack_req = ((pkt->mask & RXE_END_MASK) || (qp->req.noack_pkts++ > RXE_MAX_PKT_PER_ACK)); @@ -809,6 +813,9 @@ int rxe_requester(struct rxe_qp *qp) goto err; } + if (rxe_is_mcast_av(av)) + pkt.mask |= RXE_MCAST_MASK; + skb = init_req_packet(qp, av, wqe, opcode, payload, &pkt); if (unlikely(!skb)) { rxe_dbg_qp(qp, "Failed allocating skb\n");