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From: Yongseok Koh <yskoh@mellanox.com>
To: Slava Ovsiienko <viacheslavo@mellanox.com>
Cc: Shahaf Shuler <shahafs@mellanox.com>, "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v3 09/13] net/mlx5: e-switch VXLAN netlink routines update
Date: Thu, 1 Nov 2018 21:21:56 +0000
Message-ID: <20181101212101.GJ6118@mtidpdk.mti.labs.mlnx> (raw)
In-Reply-To: <1541074741-41368-10-git-send-email-viacheslavo@mellanox.com>

On Thu, Nov 01, 2018 at 05:19:31AM -0700, Slava Ovsiienko wrote:
> This part of patchset updates Netlink exchange routine. Message
> sequence numbers became not random ones, the multipart reply messages
> are supported, not propagating errors to the following socket calls,
> Netlink replies buffer size is increased to MNL_SOCKET_BUFFER_SIZE
> and now is preallocated at context creation time instead of stack
> usage. This update is needed to support Netlink query operations.
> 
> Suggested-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
> Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
> ---

I have acked this patch in v2. If this patch is changed since v2, you can drop
my acked-by tag but if there's no change, please preserve the tag. Just FYI :-)

Acked-by: Yongseok Koh <yskoh@mellanox.com>

Thanks

>  drivers/net/mlx5/mlx5_flow_tcf.c | 83 +++++++++++++++++++++++++++++-----------
>  1 file changed, 61 insertions(+), 22 deletions(-)
> 
> diff --git a/drivers/net/mlx5/mlx5_flow_tcf.c b/drivers/net/mlx5/mlx5_flow_tcf.c
> index c404a63..67a6ff3 100644
> --- a/drivers/net/mlx5/mlx5_flow_tcf.c
> +++ b/drivers/net/mlx5/mlx5_flow_tcf.c
> @@ -3678,37 +3678,76 @@ struct pedit_parser {
>  /**
>   * Send Netlink message with acknowledgment.
>   *
> - * @param ctx
> + * @param tcf
>   *   Flow context to use.
>   * @param nlh
>   *   Message to send. This function always raises the NLM_F_ACK flag before
>   *   sending.
> + * @param[in] msglen
> + *   Message length. Message buffer may contain multiple commands and
> + *   nlmsg_len field not always corresponds to actual message length.
> + *   If 0 specified the nlmsg_len field in header is used as message length.
> + * @param[in] cb
> + *   Callback handler for received message.
> + * @param[in] arg
> + *   Context pointer for callback handler.
>   *
>   * @return
>   *   0 on success, a negative errno value otherwise and rte_errno is set.
>   */
>  static int
> -flow_tcf_nl_ack(struct mlx5_flow_tcf_context *ctx, struct nlmsghdr *nlh)
> +flow_tcf_nl_ack(struct mlx5_flow_tcf_context *tcf,
> +		struct nlmsghdr *nlh,
> +		uint32_t msglen,
> +		mnl_cb_t cb, void *arg)
>  {
> -	alignas(struct nlmsghdr)
> -	uint8_t ans[mnl_nlmsg_size(sizeof(struct nlmsgerr)) +
> -		    nlh->nlmsg_len - sizeof(*nlh)];
> -	uint32_t seq = ctx->seq++;
> -	struct mnl_socket *nl = ctx->nl;
> -	int ret;
> -
> -	nlh->nlmsg_flags |= NLM_F_ACK;
> +	unsigned int portid = mnl_socket_get_portid(tcf->nl);
> +	uint32_t seq = tcf->seq++;
> +	int err, ret;
> +
> +	assert(tcf->nl);
> +	assert(tcf->buf);
> +	if (!seq)
> +		/* seq 0 is reserved for kernel event-driven notifications. */
> +		seq = tcf->seq++;
>  	nlh->nlmsg_seq = seq;
> -	ret = mnl_socket_sendto(nl, nlh, nlh->nlmsg_len);
> -	if (ret != -1)
> -		ret = mnl_socket_recvfrom(nl, ans, sizeof(ans));
> -	if (ret != -1)
> -		ret = mnl_cb_run
> -			(ans, ret, seq, mnl_socket_get_portid(nl), NULL, NULL);
> +	if (!msglen) {
> +		msglen = nlh->nlmsg_len;
> +		nlh->nlmsg_flags |= NLM_F_ACK;
> +	}
> +	ret = mnl_socket_sendto(tcf->nl, nlh, msglen);
> +	err = (ret <= 0) ? errno : 0;
> +	nlh = (struct nlmsghdr *)(tcf->buf);
> +	/*
> +	 * The following loop postpones non-fatal errors until multipart
> +	 * messages are complete.
> +	 */
>  	if (ret > 0)
> +		while (true) {
> +			ret = mnl_socket_recvfrom(tcf->nl, tcf->buf,
> +						  tcf->buf_size);
> +			if (ret < 0) {
> +				err = errno;
> +				if (err != ENOSPC)
> +					break;
> +			}
> +			if (!err) {
> +				ret = mnl_cb_run(nlh, ret, seq, portid,
> +						 cb, arg);
> +				if (ret < 0) {
> +					err = errno;
> +					break;
> +				}
> +			}
> +			/* Will receive till end of multipart message */
> +			if (!(nlh->nlmsg_flags & NLM_F_MULTI) ||
> +			      nlh->nlmsg_type == NLMSG_DONE)
> +				break;
> +		}
> +	if (!err)
>  		return 0;
> -	rte_errno = errno;
> -	return -rte_errno;
> +	rte_errno = err;
> +	return -err;
>  }
>  
>  /**
> @@ -3739,7 +3778,7 @@ struct pedit_parser {
>  	nlh = dev_flow->tcf.nlh;
>  	nlh->nlmsg_type = RTM_NEWTFILTER;
>  	nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL;
> -	if (!flow_tcf_nl_ack(ctx, nlh))
> +	if (!flow_tcf_nl_ack(ctx, nlh, 0, NULL, NULL))
>  		return 0;
>  	return rte_flow_error_set(error, rte_errno,
>  				  RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
> @@ -3778,7 +3817,7 @@ struct pedit_parser {
>  	nlh = dev_flow->tcf.nlh;
>  	nlh->nlmsg_type = RTM_DELTFILTER;
>  	nlh->nlmsg_flags = NLM_F_REQUEST;
> -	flow_tcf_nl_ack(ctx, nlh);
> +	flow_tcf_nl_ack(ctx, nlh, 0, NULL, NULL);
>  }
>  
>  /**
> @@ -4311,7 +4350,7 @@ struct pedit_parser {
>  	tcm->tcm_handle = TC_H_MAKE(TC_H_INGRESS, 0);
>  	tcm->tcm_parent = TC_H_INGRESS;
>  	/* Ignore errors when qdisc is already absent. */
> -	if (flow_tcf_nl_ack(ctx, nlh) &&
> +	if (flow_tcf_nl_ack(ctx, nlh, 0, NULL, NULL) &&
>  	    rte_errno != EINVAL && rte_errno != ENOENT)
>  		return rte_flow_error_set(error, rte_errno,
>  					  RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
> @@ -4327,7 +4366,7 @@ struct pedit_parser {
>  	tcm->tcm_handle = TC_H_MAKE(TC_H_INGRESS, 0);
>  	tcm->tcm_parent = TC_H_INGRESS;
>  	mnl_attr_put_strz_check(nlh, sizeof(buf), TCA_KIND, "ingress");
> -	if (flow_tcf_nl_ack(ctx, nlh))
> +	if (flow_tcf_nl_ack(ctx, nlh, 0, NULL, NULL))
>  		return rte_flow_error_set(error, rte_errno,
>  					  RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
>  					  "netlink: failed to create ingress"
> -- 
> 1.8.3.1
> 

  reply	other threads:[~2018-11-01 21:21 UTC|newest]

Thread overview: 110+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-02  6:30 [dpdk-dev] [PATCH 1/5] net/mlx5: add VXLAN encap/decap support for e-switch Slava Ovsiienko
2018-10-02  6:30 ` [dpdk-dev] [PATCH 2/5] net/mlx5: e-switch VXLAN netlink routines update Slava Ovsiienko
2018-10-02  6:30 ` [dpdk-dev] [PATCH 3/5] net/mlx5: e-switch VXLAN flow validation routine Slava Ovsiienko
2018-10-02  6:30 ` [dpdk-dev] [PATCH 4/5] net/mlx5: e-switch VXLAN flow translation routine Slava Ovsiienko
2018-10-02  6:30 ` [dpdk-dev] [PATCH 5/5] net/mlx5: e-switch VXLAN tunnel devices management Slava Ovsiienko
2018-10-15 14:13 ` [dpdk-dev] [PATCH v2 0/7] net/mlx5: e-switch VXLAN encap/decap hardware offload Viacheslav Ovsiienko
2018-10-15 14:13   ` [dpdk-dev] [PATCH v2 1/7] net/mlx5: e-switch VXLAN configuration and definitions Viacheslav Ovsiienko
2018-10-23 10:01     ` Yongseok Koh
2018-10-25 12:50       ` Slava Ovsiienko
2018-10-25 23:33         ` Yongseok Koh
2018-10-15 14:13   ` [dpdk-dev] [PATCH v2 2/7] net/mlx5: e-switch VXLAN flow validation routine Viacheslav Ovsiienko
2018-10-23 10:04     ` Yongseok Koh
2018-10-25 13:53       ` Slava Ovsiienko
2018-10-26  3:07         ` Yongseok Koh
2018-10-26  8:39           ` Slava Ovsiienko
2018-10-26 21:56             ` Yongseok Koh
2018-10-29  9:33               ` Slava Ovsiienko
2018-10-29 18:26                 ` Yongseok Koh
2018-10-15 14:13   ` [dpdk-dev] [PATCH v2 3/7] net/mlx5: e-switch VXLAN flow translation routine Viacheslav Ovsiienko
2018-10-23 10:06     ` Yongseok Koh
2018-10-25 14:37       ` Slava Ovsiienko
2018-10-26  4:22         ` Yongseok Koh
2018-10-26  9:06           ` Slava Ovsiienko
2018-10-26 22:10             ` Yongseok Koh
2018-10-15 14:13   ` [dpdk-dev] [PATCH v2 4/7] net/mlx5: e-switch VXLAN netlink routines update Viacheslav Ovsiienko
2018-10-23 10:07     ` Yongseok Koh
2018-10-15 14:13   ` [dpdk-dev] [PATCH v2 5/7] net/mlx5: e-switch VXLAN tunnel devices management Viacheslav Ovsiienko
2018-10-25  0:28     ` Yongseok Koh
2018-10-25 20:21       ` Slava Ovsiienko
2018-10-26  6:25         ` Yongseok Koh
2018-10-26  9:35           ` Slava Ovsiienko
2018-10-26 22:42             ` Yongseok Koh
2018-10-29 11:53               ` Slava Ovsiienko
2018-10-29 18:42                 ` Yongseok Koh
2018-10-15 14:13   ` [dpdk-dev] [PATCH v2 6/7] net/mlx5: e-switch VXLAN encapsulation rules management Viacheslav Ovsiienko
2018-10-25  0:33     ` Yongseok Koh
2018-10-15 14:13   ` [dpdk-dev] [PATCH v2 7/7] net/mlx5: e-switch VXLAN rule cleanup routines Viacheslav Ovsiienko
2018-10-25  0:36     ` Yongseok Koh
2018-10-25 20:32       ` Slava Ovsiienko
2018-10-26  6:30         ` Yongseok Koh
2018-11-01 12:19   ` [dpdk-dev] [PATCH v3 00/13] net/mlx5: e-switch VXLAN encap/decap hardware offload Slava Ovsiienko
2018-11-01 12:19     ` [dpdk-dev] [PATCH v3 01/13] net/mlx5: prepare makefile for adding e-switch VXLAN Slava Ovsiienko
2018-11-01 20:33       ` Yongseok Koh
2018-11-01 12:19     ` [dpdk-dev] [PATCH v3 02/13] net/mlx5: prepare meson.build " Slava Ovsiienko
2018-11-01 20:33       ` Yongseok Koh
2018-11-01 12:19     ` [dpdk-dev] [PATCH v3 03/13] net/mlx5: add necessary definitions for " Slava Ovsiienko
2018-11-01 20:35       ` Yongseok Koh
2018-11-01 12:19     ` [dpdk-dev] [PATCH v3 04/13] net/mlx5: add necessary structures " Slava Ovsiienko
2018-11-01 20:36       ` Yongseok Koh
2018-11-01 12:19     ` [dpdk-dev] [PATCH v3 05/13] net/mlx5: swap items/actions validations for e-switch rules Slava Ovsiienko
2018-11-01 20:37       ` Yongseok Koh
2018-11-01 12:19     ` [dpdk-dev] [PATCH v3 06/13] net/mlx5: add e-switch VXLAN support to validation routine Slava Ovsiienko
2018-11-01 20:49       ` Yongseok Koh
2018-11-01 12:19     ` [dpdk-dev] [PATCH v3 07/13] net/mlx5: add VXLAN support to flow prepare routine Slava Ovsiienko
2018-11-01 21:03       ` Yongseok Koh
2018-11-01 12:19     ` [dpdk-dev] [PATCH v3 08/13] net/mlx5: add VXLAN support to flow translate routine Slava Ovsiienko
2018-11-01 21:18       ` Yongseok Koh
2018-11-01 12:19     ` [dpdk-dev] [PATCH v3 09/13] net/mlx5: e-switch VXLAN netlink routines update Slava Ovsiienko
2018-11-01 21:21       ` Yongseok Koh [this message]
2018-11-01 12:19     ` [dpdk-dev] [PATCH v3 10/13] net/mlx5: fix e-switch Flow counter deletion Slava Ovsiienko
2018-11-01 22:00       ` Yongseok Koh
2018-11-01 12:19     ` [dpdk-dev] [PATCH v3 11/13] net/mlx5: add e-switch VXLAN tunnel devices management Slava Ovsiienko
2018-11-01 23:59       ` Yongseok Koh
2018-11-01 12:19     ` [dpdk-dev] [PATCH v3 12/13] net/mlx5: add e-switch VXLAN encapsulation rules Slava Ovsiienko
2018-11-02  0:01       ` Yongseok Koh
2018-11-01 12:19     ` [dpdk-dev] [PATCH v3 13/13] net/mlx5: add e-switch VXLAN rule cleanup routines Slava Ovsiienko
2018-11-02  0:01       ` Yongseok Koh
2018-11-01 20:32     ` [dpdk-dev] [PATCH v3 00/13] net/mlx5: e-switch VXLAN encap/decap hardware offload Yongseok Koh
2018-11-02 17:53     ` [dpdk-dev] [PATCH v4 " Slava Ovsiienko
2018-11-02 17:53       ` [dpdk-dev] [PATCH v4 01/13] net/mlx5: prepare makefile for adding E-Switch VXLAN Slava Ovsiienko
2018-11-03  6:18         ` [dpdk-dev] [PATCH v5 00/13] net/mlx5: e-switch VXLAN encap/decap hardware offload Slava Ovsiienko
2018-11-03  6:18           ` [dpdk-dev] [PATCH v5 01/13] net/mlx5: prepare makefile for adding E-Switch VXLAN Slava Ovsiienko
2018-11-12 20:01             ` [dpdk-dev] [PATCH 0/4] net/mlx5: prepare to add E-switch rule flags check Slava Ovsiienko
2018-11-12 20:01               ` [dpdk-dev] [PATCH 1/4] net/mlx5: prepare Netlink communication routine to fix Slava Ovsiienko
2018-11-13 13:21                 ` Shahaf Shuler
2018-11-12 20:01               ` [dpdk-dev] [PATCH 2/4] net/mlx5: fix Netlink communication routine Slava Ovsiienko
2018-11-13 13:21                 ` Shahaf Shuler
2018-11-14 12:57                   ` Slava Ovsiienko
2018-11-12 20:01               ` [dpdk-dev] [PATCH 3/4] net/mlx5: prepare to add E-switch rule flags check Slava Ovsiienko
2018-11-12 20:01               ` [dpdk-dev] [PATCH 4/4] net/mlx5: add E-switch rule hardware offload flag check Slava Ovsiienko
2018-11-13 13:21               ` [dpdk-dev] [PATCH 0/4] net/mlx5: prepare to add E-switch rule flags check Shahaf Shuler
2018-11-14 14:56                 ` Shahaf Shuler
2018-11-03  6:18           ` [dpdk-dev] [PATCH v5 02/13] net/mlx5: prepare meson.build for adding E-Switch VXLAN Slava Ovsiienko
2018-11-03  6:18           ` [dpdk-dev] [PATCH v5 03/13] net/mlx5: add necessary definitions for " Slava Ovsiienko
2018-11-03  6:18           ` [dpdk-dev] [PATCH v5 04/13] net/mlx5: add necessary structures " Slava Ovsiienko
2018-11-03  6:18           ` [dpdk-dev] [PATCH v5 05/13] net/mlx5: swap items/actions validations for E-Switch rules Slava Ovsiienko
2018-11-03  6:18           ` [dpdk-dev] [PATCH v5 06/13] net/mlx5: add E-Switch VXLAN support to validation routine Slava Ovsiienko
2018-11-03  6:18           ` [dpdk-dev] [PATCH v5 07/13] net/mlx5: add VXLAN support to flow prepare routine Slava Ovsiienko
2018-11-03  6:18           ` [dpdk-dev] [PATCH v5 08/13] net/mlx5: add VXLAN support to flow translate routine Slava Ovsiienko
2018-11-03  6:18           ` [dpdk-dev] [PATCH v5 09/13] net/mlx5: update E-Switch VXLAN netlink routines Slava Ovsiienko
2018-11-03  6:18           ` [dpdk-dev] [PATCH v5 10/13] net/mlx5: fix E-Switch Flow counter deletion Slava Ovsiienko
2018-11-03  6:18           ` [dpdk-dev] [PATCH v5 11/13] net/mlx5: add E-switch VXLAN tunnel devices management Slava Ovsiienko
2018-11-03  6:18           ` [dpdk-dev] [PATCH v5 12/13] net/mlx5: add E-Switch VXLAN encapsulation rules Slava Ovsiienko
2018-11-03  6:18           ` [dpdk-dev] [PATCH v5 13/13] net/mlx5: add E-switch VXLAN rule cleanup routines Slava Ovsiienko
2018-11-04  6:48           ` [dpdk-dev] [PATCH v5 00/13] net/mlx5: e-switch VXLAN encap/decap hardware offload Shahaf Shuler
2018-11-02 17:53       ` [dpdk-dev] [PATCH v4 02/13] net/mlx5: prepare meson.build for adding E-Switch VXLAN Slava Ovsiienko
2018-11-02 17:53       ` [dpdk-dev] [PATCH v4 03/13] net/mlx5: add necessary definitions for " Slava Ovsiienko
2018-11-02 17:53       ` [dpdk-dev] [PATCH v4 04/13] net/mlx5: add necessary structures " Slava Ovsiienko
2018-11-02 17:53       ` [dpdk-dev] [PATCH v4 05/13] net/mlx5: swap items/actions validations for E-Switch rules Slava Ovsiienko
2018-11-02 17:53       ` [dpdk-dev] [PATCH v4 07/13] net/mlx5: add VXLAN support to flow prepare routine Slava Ovsiienko
2018-11-02 21:38         ` Yongseok Koh
2018-11-02 17:53       ` [dpdk-dev] [PATCH v4 06/13] net/mlx5: add E-Switch VXLAN support to validation routine Slava Ovsiienko
2018-11-02 17:53       ` [dpdk-dev] [PATCH v4 08/13] net/mlx5: add VXLAN support to flow translate routine Slava Ovsiienko
2018-11-02 21:53         ` Yongseok Koh
2018-11-02 23:29           ` Yongseok Koh
2018-11-02 17:53       ` [dpdk-dev] [PATCH v4 09/13] net/mlx5: update E-Switch VXLAN netlink routines Slava Ovsiienko
2018-11-02 17:53       ` [dpdk-dev] [PATCH v4 10/13] net/mlx5: fix E-Switch Flow counter deletion Slava Ovsiienko
2018-11-02 17:53       ` [dpdk-dev] [PATCH v4 11/13] net/mlx5: add E-switch VXLAN tunnel devices management Slava Ovsiienko
2018-11-02 17:53       ` [dpdk-dev] [PATCH v4 12/13] net/mlx5: add E-Switch VXLAN encapsulation rules Slava Ovsiienko
2018-11-02 17:53       ` [dpdk-dev] [PATCH v4 13/13] net/mlx5: add E-switch VXLAN rule cleanup routines Slava Ovsiienko

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