netdev - Re: [PATCHv3 8/8] RDMA/rxe: Replace l

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Date:   Thu, 23 Feb 2023 21:15:47 +0800
From:   Zhu Yanjun <yanjun.zhu@...ux.dev>
To:     Zhu Yanjun <yanjun.zhu@...el.com>, jgg@...pe.ca, leon@...nel.org,
        zyjzyj2000@...il.com, linux-rdma@...r.kernel.org, parav@...dia.com,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Cc:     Zhu Yanjun <yanjun.zhu@...ux.dev>
Subject: Re: [PATCHv3 8/8] RDMA/rxe: Replace l_sk6 with sk6 in net namespace

在 2023/2/14 14:06, Zhu Yanjun 写道:
> From: Zhu Yanjun <yanjun.zhu@...ux.dev>
> 
> The net namespace variable sk6 can be used. As such, l_sk6 can be
> replaced with it.
> 
> Signed-off-by: Zhu Yanjun <yanjun.zhu@...ux.dev>

Add netdev@...r.kernel.org.

Zhu Yanjun

> ---
>   drivers/infiniband/sw/rxe/rxe.c       |  1 -
>   drivers/infiniband/sw/rxe/rxe_net.c   | 20 +-------------------
>   drivers/infiniband/sw/rxe/rxe_verbs.h |  1 -
>   3 files changed, 1 insertion(+), 21 deletions(-)
> 
> diff --git a/drivers/infiniband/sw/rxe/rxe.c b/drivers/infiniband/sw/rxe/rxe.c
> index c297677bf06a..3260f598a7fb 100644
> --- a/drivers/infiniband/sw/rxe/rxe.c
> +++ b/drivers/infiniband/sw/rxe/rxe.c
> @@ -75,7 +75,6 @@ static void rxe_init_device_param(struct rxe_dev *rxe)
>   			rxe->ndev->dev_addr);
>   
>   	rxe->max_ucontext			= RXE_MAX_UCONTEXT;
> -	rxe->l_sk6				= NULL;
>   }
>   
>   /* initialize port attributes */
> diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c
> index 8135876b11f6..ebcb86fa1e5e 100644
> --- a/drivers/infiniband/sw/rxe/rxe_net.c
> +++ b/drivers/infiniband/sw/rxe/rxe_net.c
> @@ -50,24 +50,6 @@ static struct dst_entry *rxe_find_route6(struct rxe_qp *qp,
>   {
>   	struct dst_entry *ndst;
>   	struct flowi6 fl6 = { { 0 } };
> -	struct rxe_dev *rdev;
> -
> -	rdev = rxe_get_dev_from_net(ndev);
> -	if (!rdev->l_sk6) {
> -		struct sock *sk;
> -
> -		rcu_read_lock();
> -		sk = udp6_lib_lookup(dev_net(ndev), NULL, 0, &in6addr_any,
> -				     htons(ROCE_V2_UDP_DPORT), 0);
> -		rcu_read_unlock();
> -		if (!sk) {
> -			pr_info("file: %s +%d, error\n", __FILE__, __LINE__);
> -			return (struct dst_entry *)sk;
> -		}
> -		__sock_put(sk);
> -		rdev->l_sk6 = sk->sk_socket;
> -	}
> -
>   
>   	memset(&fl6, 0, sizeof(fl6));
>   	fl6.flowi6_oif = ndev->ifindex;
> @@ -76,7 +58,7 @@ static struct dst_entry *rxe_find_route6(struct rxe_qp *qp,
>   	fl6.flowi6_proto = IPPROTO_UDP;
>   
>   	ndst = ipv6_stub->ipv6_dst_lookup_flow(dev_net(ndev),
> -					       rdev->l_sk6->sk, &fl6,
> +					       rxe_ns_pernet_sk6(dev_net(ndev)), &fl6,
>   					       NULL);
>   	if (IS_ERR(ndst)) {
>   		rxe_dbg_qp(qp, "no route to %pI6\n", daddr);
> diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.h b/drivers/infiniband/sw/rxe/rxe_verbs.h
> index 52c4ef4d0305..19ddfa890480 100644
> --- a/drivers/infiniband/sw/rxe/rxe_verbs.h
> +++ b/drivers/infiniband/sw/rxe/rxe_verbs.h
> @@ -408,7 +408,6 @@ struct rxe_dev {
>   
>   	struct rxe_port		port;
>   	struct crypto_shash	*tfm;
> -	struct socket		*l_sk6;
>   };
>   
>   static inline void rxe_counter_inc(struct rxe_dev *rxe, enum rxe_counters index)