From nobody Tue Apr 14 14:05:39 2026 Received: from out-178.mta0.migadu.com (out-178.mta0.migadu.com [91.218.175.178]) (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 DDBF3364EAB for ; Tue, 14 Apr 2026 06:30:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.178 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776148220; cv=none; b=IMeQLKet1IjCWLP9HaFkBr0S4UuvuDSyEr9gdO0ua+0TBmGhb2cUk2Olm9xuYZlhM97AADoNLHyMMB47BTFx6lYw5dsIDhM6hZPsiQikN5biuiCoK9CY796DH8KyU4aFrz0Docj277xkDsH9noS4AB4b3Ta6KoISiS2a7F/WJr0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776148220; c=relaxed/simple; bh=cw4GjcWsuYnUl046fx3PRCDnY8sVbCME0H9EzD/IhbA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JZbS6FqAKFmM1FT1/Mp9+2YZ9IANQ2f7x45AKOAL3xXHUY8g0USLTkK5pmuKEkMp7XrBUH6zYii0DfqTkKLuWRtScEjwJV0f7klTwSrnOMoehZfl29jNgkZFdZJ/+RbkIiwhnjkEDV0yENRHxhJMjyyIx5dCjPHmoEuxxY5vjrE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=lKTRVlA1; arc=none smtp.client-ip=91.218.175.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="lKTRVlA1" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1776148216; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=JRFy4q6+w0PLU2dSrVBHct706edyWSjeEhmFgbFlE9k=; b=lKTRVlA1jzwRFQnLjyqjMwcYGKszj6ATFzUMDDpWr3ssqsOuF5slTbJY8PteK8L1Rw4ov1 v/GicJc/EVZ2IOa/+ehTQDPIhJmbbSULQQqrejA4ULk5W9fLE4dDQyTnZWZCoRbzRuhdW6 xAgYzxT2CgpE0gKRe0Srk0I2n54sC+Y= From: zhenwei pi To: linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org Cc: zyjzyj2000@gmail.com, jgg@ziepe.ca, leon@kernel.org, zhenwei pi Subject: [PATCH v7 1/4] RDMA/rxe: remove rxe_ib_device_get_netdev() and RXE_PORT Date: Tue, 14 Apr 2026 14:29:45 +0800 Message-ID: <20260414062948.671658-2-zhenwei.pi@linux.dev> In-Reply-To: <20260414062948.671658-1-zhenwei.pi@linux.dev> References: <20260414062948.671658-1-zhenwei.pi@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" Suggested by Leon, remove the rxe_ib_device_get_netdev() wrapper and the RXE_PORT definition. These additions do not improve readability, and RXE has always had only a single port. Signed-off-by: zhenwei pi --- drivers/infiniband/sw/rxe/rxe_mcast.c | 4 ++-- drivers/infiniband/sw/rxe/rxe_net.c | 7 +++---- drivers/infiniband/sw/rxe/rxe_verbs.c | 4 ++-- drivers/infiniband/sw/rxe/rxe_verbs.h | 6 ------ 4 files changed, 7 insertions(+), 14 deletions(-) diff --git a/drivers/infiniband/sw/rxe/rxe_mcast.c b/drivers/infiniband/sw/= rxe/rxe_mcast.c index 5cad72073eca..acd03bd87794 100644 --- a/drivers/infiniband/sw/rxe/rxe_mcast.c +++ b/drivers/infiniband/sw/rxe/rxe_mcast.c @@ -34,7 +34,7 @@ static int rxe_mcast_add(struct rxe_dev *rxe, union ib_gi= d *mgid) struct net_device *ndev; int ret; =20 - ndev =3D rxe_ib_device_get_netdev(&rxe->ib_dev); + ndev =3D ib_device_get_netdev(&rxe->ib_dev, 1); if (!ndev) return -ENODEV; =20 @@ -59,7 +59,7 @@ static int rxe_mcast_del(struct rxe_dev *rxe, union ib_gi= d *mgid) struct net_device *ndev; int ret; =20 - ndev =3D rxe_ib_device_get_netdev(&rxe->ib_dev); + ndev =3D ib_device_get_netdev(&rxe->ib_dev, 1); if (!ndev) return -ENODEV; =20 diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rx= e/rxe_net.c index 211bd3000acc..6621d01ac32d 100644 --- a/drivers/infiniband/sw/rxe/rxe_net.c +++ b/drivers/infiniband/sw/rxe/rxe_net.c @@ -602,7 +602,7 @@ const char *rxe_parent_name(struct rxe_dev *rxe, unsign= ed int port_num) struct net_device *ndev; char *ndev_name; =20 - ndev =3D rxe_ib_device_get_netdev(&rxe->ib_dev); + ndev =3D ib_device_get_netdev(&rxe->ib_dev, 1); if (!ndev) return NULL; ndev_name =3D ndev->name; @@ -646,12 +646,11 @@ static void rxe_sock_put(struct sock *sk, =20 void rxe_net_del(struct ib_device *dev) { - struct rxe_dev *rxe =3D container_of(dev, struct rxe_dev, ib_dev); struct net_device *ndev; struct sock *sk; struct net *net; =20 - ndev =3D rxe_ib_device_get_netdev(&rxe->ib_dev); + ndev =3D ib_device_get_netdev(dev, 1); if (!ndev) return; =20 @@ -699,7 +698,7 @@ void rxe_set_port_state(struct rxe_dev *rxe) { struct net_device *ndev; =20 - ndev =3D rxe_ib_device_get_netdev(&rxe->ib_dev); + ndev =3D ib_device_get_netdev(&rxe->ib_dev, 1); if (!ndev) return; =20 diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/= rxe/rxe_verbs.c index 4d4891dc2884..eb17b6086d5e 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.c +++ b/drivers/infiniband/sw/rxe/rxe_verbs.c @@ -50,7 +50,7 @@ static int rxe_query_port(struct ib_device *ibdev, goto err_out; } =20 - ndev =3D rxe_ib_device_get_netdev(ibdev); + ndev =3D ib_device_get_netdev(ibdev, 1); if (!ndev) { err =3D -ENODEV; goto err_out; @@ -1441,7 +1441,7 @@ static int rxe_enable_driver(struct ib_device *ib_dev) struct rxe_dev *rxe =3D container_of(ib_dev, struct rxe_dev, ib_dev); struct net_device *ndev; =20 - ndev =3D rxe_ib_device_get_netdev(ib_dev); + ndev =3D ib_device_get_netdev(ib_dev, 1); if (!ndev) return -ENODEV; =20 diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.h b/drivers/infiniband/sw/= rxe/rxe_verbs.h index d92f80d16f78..e800545d1046 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.h +++ b/drivers/infiniband/sw/rxe/rxe_verbs.h @@ -415,7 +415,6 @@ struct rxe_port { u32 qp_gsi_index; }; =20 -#define RXE_PORT 1 struct rxe_dev { struct ib_device ib_dev; struct ib_device_attr attr; @@ -451,11 +450,6 @@ struct rxe_dev { struct rxe_port port; }; =20 -static inline struct net_device *rxe_ib_device_get_netdev(struct ib_device= *dev) -{ - return ib_device_get_netdev(dev, RXE_PORT); -} - static inline void rxe_counter_inc(struct rxe_dev *rxe, enum rxe_counters = index) { atomic64_inc(&rxe->stats_counters[index]); --=20 2.43.0 From nobody Tue Apr 14 14:05:39 2026 Received: from out-181.mta0.migadu.com (out-181.mta0.migadu.com [91.218.175.181]) (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 0DA85367F3D for ; Tue, 14 Apr 2026 06:30:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.181 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776148223; cv=none; b=L7ZQSdMBg3h8IAGebMPAtOqkbJ3NQmIUN7VshuSfBfBYMB8wK4C3x15ivGB5v17Zv70S8ou8jo7rTroI6jNVzko9Lt5qTwmr/GevKKRrdX+hig9bAD4nTh2xFHDUP9ZEtFsTxIWgCP9qSD3wI5/6N0jkVA/66sCYxupYJ2PC7xg= ARC-Message-Signature: i=1; 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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1776148220; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=khPAm7yRKyvsyjet7XrXUNeDJARjrHbHUKpjHIDa6EI=; b=GO6K/6YSK4uK4rYlQx7bPCMs7kvCXhG1ijB43QQzNBe+cw90TH+tXbrxDqMUc+PshzfxMh A5GOhaGXPvJLG7FgpWsKiEKgYAUS9N3AbKPEKbWGmT4TgPdPQdiLYq1cSTMZcew+As4+m2 O5ni4TswpRIp7EkwxB395+d7c8vfnTw= From: zhenwei pi To: linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org Cc: zyjzyj2000@gmail.com, jgg@ziepe.ca, leon@kernel.org, zhenwei pi Subject: [PATCH v7 2/4] RDMA/rxe: add SENT/RCVD bytes Date: Tue, 14 Apr 2026 14:29:46 +0800 Message-ID: <20260414062948.671658-3-zhenwei.pi@linux.dev> In-Reply-To: <20260414062948.671658-1-zhenwei.pi@linux.dev> References: <20260414062948.671658-1-zhenwei.pi@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" There is a lack of sent/received counter in bytes. Signed-off-by: zhenwei pi --- drivers/infiniband/sw/rxe/rxe_hw_counters.c | 2 ++ drivers/infiniband/sw/rxe/rxe_hw_counters.h | 2 ++ drivers/infiniband/sw/rxe/rxe_net.c | 2 ++ drivers/infiniband/sw/rxe/rxe_recv.c | 2 ++ drivers/infiniband/sw/rxe/rxe_verbs.h | 6 ++++++ 5 files changed, 14 insertions(+) diff --git a/drivers/infiniband/sw/rxe/rxe_hw_counters.c b/drivers/infiniba= nd/sw/rxe/rxe_hw_counters.c index 437917a7d8f2..17edaa9a9b9b 100644 --- a/drivers/infiniband/sw/rxe/rxe_hw_counters.c +++ b/drivers/infiniband/sw/rxe/rxe_hw_counters.c @@ -22,6 +22,8 @@ static const struct rdma_stat_desc rxe_counter_descs[] = =3D { [RXE_CNT_LINK_DOWNED].name =3D "link_downed", [RXE_CNT_RDMA_SEND].name =3D "rdma_sends", [RXE_CNT_RDMA_RECV].name =3D "rdma_recvs", + [RXE_CNT_SENT_BYTES].name =3D "sent_bytes", + [RXE_CNT_RCVD_BYTES].name =3D "rcvd_bytes", }; =20 int rxe_ib_get_hw_stats(struct ib_device *ibdev, diff --git a/drivers/infiniband/sw/rxe/rxe_hw_counters.h b/drivers/infiniba= nd/sw/rxe/rxe_hw_counters.h index 051f9e1c3852..01b355103cbc 100644 --- a/drivers/infiniband/sw/rxe/rxe_hw_counters.h +++ b/drivers/infiniband/sw/rxe/rxe_hw_counters.h @@ -26,6 +26,8 @@ enum rxe_counters { RXE_CNT_LINK_DOWNED, RXE_CNT_RDMA_SEND, RXE_CNT_RDMA_RECV, + RXE_CNT_SENT_BYTES, + RXE_CNT_RCVD_BYTES, RXE_NUM_OF_COUNTERS }; =20 diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rx= e/rxe_net.c index 6621d01ac32d..86660031ffa2 100644 --- a/drivers/infiniband/sw/rxe/rxe_net.c +++ b/drivers/infiniband/sw/rxe/rxe_net.c @@ -503,6 +503,7 @@ int rxe_xmit_packet(struct rxe_qp *qp, struct rxe_pkt_i= nfo *pkt, int err; int is_request =3D pkt->mask & RXE_REQ_MASK; struct rxe_dev *rxe =3D to_rdev(qp->ibqp.device); + unsigned int skblen =3D skb->len; unsigned long flags; =20 spin_lock_irqsave(&qp->state_lock, flags); @@ -526,6 +527,7 @@ int rxe_xmit_packet(struct rxe_qp *qp, struct rxe_pkt_i= nfo *pkt, } =20 rxe_counter_inc(rxe, RXE_CNT_SENT_PKTS); + rxe_counter_add(rxe, RXE_CNT_SENT_BYTES, skblen); goto done; =20 drop: diff --git a/drivers/infiniband/sw/rxe/rxe_recv.c b/drivers/infiniband/sw/r= xe/rxe_recv.c index 5861e4244049..e7bab89e7d8d 100644 --- a/drivers/infiniband/sw/rxe/rxe_recv.c +++ b/drivers/infiniband/sw/rxe/rxe_recv.c @@ -318,6 +318,7 @@ void rxe_rcv(struct sk_buff *skb) int err; struct rxe_pkt_info *pkt =3D SKB_TO_PKT(skb); struct rxe_dev *rxe =3D pkt->rxe; + unsigned int skblen =3D skb->len - skb_network_offset(skb); =20 if (unlikely(skb->len < RXE_BTH_BYTES)) goto drop; @@ -341,6 +342,7 @@ void rxe_rcv(struct sk_buff *skb) if (unlikely(err)) goto drop; =20 + rxe_counter_add(rxe, RXE_CNT_RCVD_BYTES, skblen); rxe_counter_inc(rxe, RXE_CNT_RCVD_PKTS); =20 if (unlikely(bth_qpn(pkt) =3D=3D IB_MULTICAST_QPN)) diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.h b/drivers/infiniband/sw/= rxe/rxe_verbs.h index e800545d1046..0f5ffd94643f 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.h +++ b/drivers/infiniband/sw/rxe/rxe_verbs.h @@ -455,6 +455,12 @@ static inline void rxe_counter_inc(struct rxe_dev *rxe= , enum rxe_counters index) atomic64_inc(&rxe->stats_counters[index]); } =20 +static inline void rxe_counter_add(struct rxe_dev *rxe, enum rxe_counters = index, + s64 val) +{ + atomic64_add(val, &rxe->stats_counters[index]); +} + static inline struct rxe_dev *to_rdev(struct ib_device *dev) { return dev ? container_of(dev, struct rxe_dev, ib_dev) : NULL; --=20 2.43.0 From nobody Tue Apr 14 14:05:39 2026 Received: from out-189.mta0.migadu.com (out-189.mta0.migadu.com [91.218.175.189]) (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 B6A8F369225 for ; Tue, 14 Apr 2026 06:30:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.189 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776148227; cv=none; b=um1Qe3Esg0vrWeaFXYhN6DUDhD4TwewKDjBAYi+hajgb+o6ONJ6FGxHmlLBBx/kM1vBzf0Tk1grgoBoUxZzOyViTft19x4bikHVbRucaO4GzuQb7oOQp16PMAATcZ0AZAMgH74arrxZy77Y2Chnq3CPHF3gz00z+addHeRc0wzg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776148227; c=relaxed/simple; bh=gG44iXHx9nTcl722pxo/EULpV1wt9L9h8ugZHQSema4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ltifCdHCz/qyH6T/+Jrdykqr6CK3e47S2yyWZ/NYIFS3xcavHs9VWMvmBabkCWAxzClo38g9iHoFTByjGxjy2PF9l2OGI5ysas8erlDcoB/pku0IKLdQ2MZhnn+iowAIrUoCcp7nCxTYgCSOS07a5sDpbxzI+aZj+Gw0qgZdJvo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=djDStVrv; arc=none smtp.client-ip=91.218.175.189 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="djDStVrv" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1776148224; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jpPita2qv7oC8Q5RczDZc9Ulot3JW1NrQ3aoE//GC1c=; b=djDStVrvNOj1GGNr8OvZ/cCW9Imw0SfceeJsEwdOjdWMiTp6a83yBIwJwp8aiNrBxhBH3d 4hyGE5OxdUIvyQ4pQflrlrV3uUYQ00buoz3AszPGZvJF7OWrOs/+cQzclhsG9y8fxYXpmi gaSCWADkQ1bM8ZhCqCax0cF8BlQIF14= From: zhenwei pi To: linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org Cc: zyjzyj2000@gmail.com, jgg@ziepe.ca, leon@kernel.org, zhenwei pi Subject: [PATCH v7 3/4] RDMA/rxe: support perf mgmt GET method Date: Tue, 14 Apr 2026 14:29:47 +0800 Message-ID: <20260414062948.671658-4-zhenwei.pi@linux.dev> In-Reply-To: <20260414062948.671658-1-zhenwei.pi@linux.dev> References: <20260414062948.671658-1-zhenwei.pi@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" In RXE, hardware counters are already supported, but not in a standardized manner. For instance, user-space monitoring tools like atop only read from the *counters* directory. Therefore, it is necessary to add perf management support to RXE. Also use rxe_counter_get instead of raw atomic64_read in hw-counters. Signed-off-by: zhenwei pi --- drivers/infiniband/sw/rxe/Makefile | 1 + drivers/infiniband/sw/rxe/rxe_loc.h | 6 ++ drivers/infiniband/sw/rxe/rxe_mad.c | 101 ++++++++++++++++++++++++++ drivers/infiniband/sw/rxe/rxe_verbs.c | 1 + 4 files changed, 109 insertions(+) create mode 100644 drivers/infiniband/sw/rxe/rxe_mad.c diff --git a/drivers/infiniband/sw/rxe/Makefile b/drivers/infiniband/sw/rxe= /Makefile index 3977f4f13258..e097c1ca1874 100644 --- a/drivers/infiniband/sw/rxe/Makefile +++ b/drivers/infiniband/sw/rxe/Makefile @@ -23,6 +23,7 @@ rdma_rxe-y :=3D \ rxe_task.o \ rxe_net.o \ rxe_hw_counters.o \ + rxe_mad.o \ rxe_ns.o =20 rdma_rxe-$(CONFIG_INFINIBAND_ON_DEMAND_PAGING) +=3D rxe_odp.o diff --git a/drivers/infiniband/sw/rxe/rxe_loc.h b/drivers/infiniband/sw/rx= e/rxe_loc.h index e095c12699cb..64d636bf80fd 100644 --- a/drivers/infiniband/sw/rxe/rxe_loc.h +++ b/drivers/infiniband/sw/rxe/rxe_loc.h @@ -242,4 +242,10 @@ static inline int rxe_ib_advise_mr(struct ib_pd *pd, =20 #endif /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */ =20 +/* rxe-mad.c */ +int rxe_process_mad(struct ib_device *ibdev, int mad_flags, u32 port_num, + const struct ib_wc *in_wc, const struct ib_grh *in_grh, + const struct ib_mad *in, struct ib_mad *out, + size_t *out_mad_size, u16 *out_mad_pkey_index); + #endif /* RXE_LOC_H */ diff --git a/drivers/infiniband/sw/rxe/rxe_mad.c b/drivers/infiniband/sw/rx= e/rxe_mad.c new file mode 100644 index 000000000000..d54ee49e225e --- /dev/null +++ b/drivers/infiniband/sw/rxe/rxe_mad.c @@ -0,0 +1,101 @@ +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB +/* + * Copyright (c) 2026 zhenwei pi + */ + +#include +#include "rxe.h" +#include "rxe_hw_counters.h" + +static int rxe_get_pma_info(struct ib_mad *out) +{ + struct ib_class_port_info cpi =3D {}; + + cpi.capability_mask =3D IB_PMA_CLASS_CAP_EXT_WIDTH; + memcpy((out->data + 40), &cpi, sizeof(cpi)); + + return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; +} + +static int rxe_get_pma_counters(struct rxe_dev *rxe, struct ib_mad *out) +{ + struct ib_pma_portcounters *pma_cnt =3D (struct ib_pma_portcounters *)(ou= t->data + 40); + s64 val; + + /* IBA release 1.8, 16.1.3.5: During operation, instead of overflowing, t= hey shall stop + * at all ones. + */ + val =3D atomic64_read(&rxe->stats_counters[RXE_CNT_LINK_DOWNED]); + if (val > U8_MAX) + pma_cnt->link_downed_counter =3D U8_MAX; + else + pma_cnt->link_downed_counter =3D (u8)val; + + return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; +} + +static int rxe_get_pma_counters_ext(struct rxe_dev *rxe, struct ib_mad *ou= t) +{ + struct ib_pma_portcounters_ext *pma_cnt_ext =3D + (struct ib_pma_portcounters_ext *)(out->data + 40); + s64 val; + + val =3D atomic64_read(&rxe->stats_counters[RXE_CNT_SENT_BYTES]); + pma_cnt_ext->port_xmit_data =3D cpu_to_be64(val >> 2); + + val =3D atomic64_read(&rxe->stats_counters[RXE_CNT_RCVD_BYTES]); + pma_cnt_ext->port_rcv_data =3D cpu_to_be64(val >> 2); + + val =3D atomic64_read(&rxe->stats_counters[RXE_CNT_SENT_PKTS]); + pma_cnt_ext->port_xmit_packets =3D cpu_to_be64(val); + + val =3D atomic64_read(&rxe->stats_counters[RXE_CNT_RCVD_PKTS]); + pma_cnt_ext->port_rcv_packets =3D cpu_to_be64(val); + + return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; +} + +static int rxe_get_perf_mgmt(struct rxe_dev *rxe, const struct ib_mad *in,= struct ib_mad *out) +{ + switch (in->mad_hdr.attr_id) { + case IB_PMA_CLASS_PORT_INFO: + return rxe_get_pma_info(out); + + case IB_PMA_PORT_COUNTERS: + return rxe_get_pma_counters(rxe, out); + + case IB_PMA_PORT_COUNTERS_EXT: + return rxe_get_pma_counters_ext(rxe, out); + + default: + out->mad_hdr.status =3D cpu_to_be16(IB_MGMT_MAD_STATUS_UNSUPPORTED_METHO= D_ATTRIB); + return IB_MAD_RESULT_SUCCESS; + } +} + +int rxe_process_mad(struct ib_device *ibdev, int mad_flags, u32 port_num, + const struct ib_wc *in_wc, const struct ib_grh *in_grh, + const struct ib_mad *in, struct ib_mad *out, + size_t *out_mad_size, u16 *out_mad_pkey_index) +{ + struct rxe_dev *rxe =3D to_rdev(ibdev); + u8 mgmt_class =3D in->mad_hdr.mgmt_class; + u8 method =3D in->mad_hdr.method; + + if (port_num !=3D 1) + return IB_MAD_RESULT_FAILURE; + + memset(out, 0, sizeof(*out)); + switch (mgmt_class) { + case IB_MGMT_CLASS_PERF_MGMT: + if (method =3D=3D IB_MGMT_METHOD_GET) + return rxe_get_perf_mgmt(rxe, in, out); + break; + + default: + out->mad_hdr.status =3D cpu_to_be16(IB_MGMT_MAD_STATUS_UNSUPPORTED_METHO= D); + return IB_MAD_RESULT_SUCCESS; + } + + return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; +} diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/= rxe/rxe_verbs.c index eb17b6086d5e..8edd4dd1f031 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.c +++ b/drivers/infiniband/sw/rxe/rxe_verbs.c @@ -1496,6 +1496,7 @@ static const struct ib_device_ops rxe_dev_ops =3D { .post_recv =3D rxe_post_recv, .post_send =3D rxe_post_send, .post_srq_recv =3D rxe_post_srq_recv, + .process_mad =3D rxe_process_mad, .query_ah =3D rxe_query_ah, .query_device =3D rxe_query_device, .query_pkey =3D rxe_query_pkey, --=20 2.43.0 From nobody Tue Apr 14 14:05:39 2026 Received: from out-182.mta0.migadu.com (out-182.mta0.migadu.com [91.218.175.182]) (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 9EDB536B05E for ; Tue, 14 Apr 2026 06:30:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.182 ARC-Seal: i=1; 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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1776148227; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=x34vfN+KG8g2HdRXGL+ty/bB/rBlCCclhJVaFNhRcvQ=; b=RZ2/vfpk5566FMbqAa4M55cx8/LT4KDmGRK/J4cCCLaTKk9Nm+YwCjjYHq5kwfIQ04KNPT 6z+KDtJd9tdmoC/Z+0E5A2mNvoVRQIOs08qIdLzbrXixjrObMzi5I5UJ8PgqrNzDcRAkax Xf9Q1jBClAsYEJdvfZe7V3rkAxsdEs8= From: zhenwei pi To: linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org Cc: zyjzyj2000@gmail.com, jgg@ziepe.ca, leon@kernel.org, Zhu Yanjun Subject: [PATCH v7 4/4] selftest/rxe: Add selftests for perf Date: Tue, 14 Apr 2026 14:29:48 +0800 Message-ID: <20260414062948.671658-5-zhenwei.pi@linux.dev> In-Reply-To: <20260414062948.671658-1-zhenwei.pi@linux.dev> References: <20260414062948.671658-1-zhenwei.pi@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" From: Zhu Yanjun Create a virtual TUN net device with RXE support, then run rping server and client to invoke networking packets, finally compare both *port_xmit_data* and *port_rcv_data* of such device. Signed-off-by: Zhu Yanjun --- tools/testing/selftests/rdma/Makefile | 3 +- .../selftests/rdma/rxe_sent_rcvd_bytes.sh | 75 +++++++++++++++++++ 2 files changed, 77 insertions(+), 1 deletion(-) create mode 100755 tools/testing/selftests/rdma/rxe_sent_rcvd_bytes.sh diff --git a/tools/testing/selftests/rdma/Makefile b/tools/testing/selftest= s/rdma/Makefile index 7dd7cba7a73c..07af7f15c1bf 100644 --- a/tools/testing/selftests/rdma/Makefile +++ b/tools/testing/selftests/rdma/Makefile @@ -2,6 +2,7 @@ TEST_PROGS :=3D rxe_rping_between_netns.sh \ rxe_ipv6.sh \ rxe_socket_with_netns.sh \ - rxe_test_NETDEV_UNREGISTER.sh + rxe_test_NETDEV_UNREGISTER.sh \ + rxe_sent_rcvd_bytes.sh =20 include ../lib.mk diff --git a/tools/testing/selftests/rdma/rxe_sent_rcvd_bytes.sh b/tools/te= sting/selftests/rdma/rxe_sent_rcvd_bytes.sh new file mode 100755 index 000000000000..0e4fbfeebd22 --- /dev/null +++ b/tools/testing/selftests/rdma/rxe_sent_rcvd_bytes.sh @@ -0,0 +1,75 @@ +#!/bin/bash + +# Configuration +PORT=3D4791 +MODS=3D("tun" "rdma_rxe") + +exec > /dev/null + +# --- Helper: Cleanup Routine --- +cleanup() { + echo "Cleaning up resources..." + rdma link del rxe0 2>/dev/null + ip link del tun0 2>/dev/null + for m in "${MODS[@]}"; do modprobe -r "$m" 2>/dev/null; done +} + +# Ensure cleanup runs on script exit or interrupt +trap cleanup EXIT + +# --- Phase 1: Environment Check --- +if [[ $EUID -ne 0 ]]; then + echo "Error: This script must be run as root." + exit 1 +fi + +for m in "${MODS[@]}"; do + modprobe "$m" || { echo "Error: Failed to load $m"; exit 1; } +done + +# --- Phase 2: Create Interfaces & RXE Links --- +echo "Creating tun0 (1.1.1.1) and rxe0..." +ip tuntap add mode tun tun0 +ip addr add 1.1.1.1/24 dev tun0 +ip link set tun0 up +rdma link add rxe0 type rxe netdev tun0 + +# Verify port 4791 is listening +if ! ss -Huln sport =3D :$PORT | grep -q ":$PORT"; then + echo "Error: UDP port $PORT not found after rxe0 creation" + exit 1 +fi + +orig_s=3D`cat /sys/class/infiniband/rxe0/ports/1/counters/port_xmit_data` +orig_r=3D`cat /sys/class/infiniband/rxe0/ports/1/counters/port_rcv_data` + +rping -s -a 1.1.1.1 -C 3 -v & +sleep 1 +rping -c -a 1.1.1.1 -C 3 -d -v + +new_s=3D`cat /sys/class/infiniband/rxe0/ports/1/counters/port_xmit_data` +new_r=3D`cat /sys/class/infiniband/rxe0/ports/1/counters/port_rcv_data` + +echo sent $new_s $orig_s +echo rcvd $new_r $orig_r + +result0=3D$((new_s - orig_s)) +result1=3D$((new_r - orig_r)) + +if [ $result0 !=3D $result1 ]; then + echo "Error: sent and rcvd bytes different" + echo $result0 + echo $result1 + exit 1 +fi + +echo "Deleting rxe0..." +rdma link del rxe0 + +# Port should now be gone +if ss -Huln sport =3D :$PORT | grep -q ":$PORT"; then + echo "Error: UDP port $PORT still exists after all links deleted" + exit 1 +fi + +echo "Test passed successfully." --=20 2.43.0