From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Erez Shitrit <erezsh@mellanox.com>,
Alex Vesker <valex@mellanox.com>,
Saeed Mahameed <saeedm@mellanox.com>,
Sasha Levin <sashal@kernel.org>,
netdev@vger.kernel.org, linux-rdma@vger.kernel.org
Subject: [PATCH AUTOSEL 4.19 075/106] net/mlx5e: IPoIB, Drop multicast packets that this interface sent
Date: Mon, 8 Jun 2020 19:22:07 -0400 [thread overview]
Message-ID: <20200608232238.3368589-75-sashal@kernel.org> (raw)
In-Reply-To: <20200608232238.3368589-1-sashal@kernel.org>
From: Erez Shitrit <erezsh@mellanox.com>
[ Upstream commit 8b46d424a743ddfef8056d5167f13ee7ebd1dcad ]
After enabled loopback packets for IPoIB, we need to drop these packets
that this HCA has replicated and came back to the same interface that
sent them.
Fixes: 4c6c615e3f30 ("net/mlx5e: IPoIB, Add PKEY child interface nic profile")
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
index 044687a1f27c..9d86e49a7f44 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
@@ -1314,6 +1314,7 @@ int mlx5e_poll_rx_cq(struct mlx5e_cq *cq, int budget)
#ifdef CONFIG_MLX5_CORE_IPOIB
+#define MLX5_IB_GRH_SGID_OFFSET 8
#define MLX5_IB_GRH_DGID_OFFSET 24
#define MLX5_GID_SIZE 16
@@ -1327,6 +1328,7 @@ static inline void mlx5i_complete_rx_cqe(struct mlx5e_rq *rq,
struct net_device *netdev;
struct mlx5e_priv *priv;
char *pseudo_header;
+ u32 flags_rqpn;
u32 qpn;
u8 *dgid;
u8 g;
@@ -1347,7 +1349,8 @@ static inline void mlx5i_complete_rx_cqe(struct mlx5e_rq *rq,
priv = mlx5i_epriv(netdev);
tstamp = &priv->tstamp;
- g = (be32_to_cpu(cqe->flags_rqpn) >> 28) & 3;
+ flags_rqpn = be32_to_cpu(cqe->flags_rqpn);
+ g = (flags_rqpn >> 28) & 3;
dgid = skb->data + MLX5_IB_GRH_DGID_OFFSET;
if ((!g) || dgid[0] != 0xff)
skb->pkt_type = PACKET_HOST;
@@ -1356,9 +1359,15 @@ static inline void mlx5i_complete_rx_cqe(struct mlx5e_rq *rq,
else
skb->pkt_type = PACKET_MULTICAST;
- /* TODO: IB/ipoib: Allow mcast packets from other VFs
- * 68996a6e760e5c74654723eeb57bf65628ae87f4
+ /* Drop packets that this interface sent, ie multicast packets
+ * that the HCA has replicated.
*/
+ if (g && (qpn == (flags_rqpn & 0xffffff)) &&
+ (memcmp(netdev->dev_addr + 4, skb->data + MLX5_IB_GRH_SGID_OFFSET,
+ MLX5_GID_SIZE) == 0)) {
+ skb->dev = NULL;
+ return;
+ }
skb_pull(skb, MLX5_IB_GRH_BYTES);
--
2.25.1
next prev parent reply other threads:[~2020-06-08 23:54 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-08 23:20 [PATCH AUTOSEL 4.19 001/106] ath9x: Fix stack-out-of-bounds Write in ath9k_hif_usb_rx_cb Sasha Levin
2020-06-08 23:20 ` [PATCH AUTOSEL 4.19 002/106] ath9k: Fix use-after-free Write in ath9k_htc_rx_msg Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 008/106] net: atlantic: make hw_get_regs optional Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 009/106] net: ena: fix error returning in ena_com_get_hash_function() Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 015/106] ixgbe: Fix XDP redirect on archs with PAGE_SIZE above 4K Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 017/106] Bluetooth: Add SCO fallback for invalid LMP parameters error Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 025/106] batman-adv: Revert "disable ethtool link speed detection when auto negotiation off" Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 029/106] net: vmxnet3: fix possible buffer overflow caused by bad DMA value in vmxnet3_get_rss() Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 031/106] ath9k: Fix use-after-free Read in ath9k_wmi_ctrl_rx Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 032/106] ath9k: Fix general protection fault in ath9k_hif_usb_rx_cb Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 033/106] brcmfmac: fix wrong location to get firmware feature Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 035/106] e1000: Distribute switch variables for initialization Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 043/106] netfilter: nft_nat: return EOPNOTSUPP if type or flags are not supported Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 044/106] selftests/bpf: Fix memory leak in extract_build_id() Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 045/106] net: bcmgenet: set Rx mode before starting netif Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 051/106] net: lpc-enet: fix error return code in lpc_mii_init() Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 053/106] net: allwinner: Fix use correct return type for ndo_start_xmit() Sasha Levin
2020-06-08 23:21 ` [PATCH AUTOSEL 4.19 055/106] ath9k_htc: Silence undersized packet warnings Sasha Levin
2020-06-08 23:22 ` [PATCH AUTOSEL 4.19 068/106] ath10k: Remove msdu from idr when management pkt send fails Sasha Levin
2020-06-08 23:22 ` [PATCH AUTOSEL 4.19 069/106] wcn36xx: Fix error handling path in 'wcn36xx_probe()' Sasha Levin
2020-06-08 23:22 ` [PATCH AUTOSEL 4.19 070/106] net: qed*: Reduce RX and TX default ring count when running inside kdump kernel Sasha Levin
2020-06-08 23:22 ` [PATCH AUTOSEL 4.19 071/106] mt76: avoid rx reorder buffer overflow Sasha Levin
2020-06-08 23:22 ` [PATCH AUTOSEL 4.19 073/106] net: dsa: mt7530: set CPU port to fallback mode Sasha Levin
2020-06-08 23:22 ` [PATCH AUTOSEL 4.19 074/106] veth: Adjust hard_start offset on redirect XDP frames Sasha Levin
2020-06-08 23:22 ` Sasha Levin [this message]
2020-06-08 23:22 ` [PATCH AUTOSEL 4.19 076/106] rtlwifi: Fix a double free in _rtl_usb_tx_urb_setup() Sasha Levin
2020-06-08 23:22 ` [PATCH AUTOSEL 4.19 077/106] mwifiex: Fix memory corruption in dump_station Sasha Levin
2020-06-08 23:22 ` [PATCH AUTOSEL 4.19 087/106] net: ethernet: fec: move GPR register offset and bit into DT Sasha Levin
2020-06-08 23:22 ` [PATCH AUTOSEL 4.19 088/106] macvlan: Skip loopback packets in RX handler Sasha Levin
2020-06-08 23:22 ` [PATCH AUTOSEL 4.19 097/106] ixgbe: fix signed-integer-overflow warning Sasha Levin
2020-06-08 23:22 ` [PATCH AUTOSEL 4.19 104/106] vxlan: Avoid infinite loop when suppressing NS messages with invalid options Sasha Levin
2020-06-08 23:22 ` [PATCH AUTOSEL 4.19 105/106] net_failover: fixed rollback in net_failover_open() Sasha Levin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200608232238.3368589-75-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=erezsh@mellanox.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=saeedm@mellanox.com \
--cc=stable@vger.kernel.org \
--cc=valex@mellanox.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).