From: Shahaf Shuler <shahafs@mellanox.com>
To: Slava Ovsiienko <viacheslavo@mellanox.com>,
Yongseok Koh <yskoh@mellanox.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH 2/4] net/mlx5: fix Netlink communication routine
Date: Tue, 13 Nov 2018 13:21:34 +0000 [thread overview]
Message-ID: <DB7PR05MB4426FC604F2332271CBA8A37C3C20@DB7PR05MB4426.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <1542052877-41512-3-git-send-email-viacheslavo@mellanox.com>
Monday, November 12, 2018 10:02 PM, Slava Ovsiienko:
> Subject: [PATCH 2/4] net/mlx5: fix Netlink communication routine
>
> While receiving the Netlink reply messages we should stop at DONE or ACK
> message. The existing implementation stops at DONE message or if no
> multiple message flag set ( NLM_F_MULTI). It prevents the single query
> requests from working, these requests send the single reply message
> without multi-message flag followed by ACK message. This patch fixes
> receiving part of Netlink communication routine.
>
> Fixes: 6e74990b3463 ("net/mlx5: update E-Switch VXLAN netlink routines")
>
> Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
> ---
> drivers/net/mlx5/mlx5_flow_tcf.c | 58 +++++++++++++++++++++++++-----
> ----------
> 1 file changed, 37 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/net/mlx5/mlx5_flow_tcf.c
> b/drivers/net/mlx5/mlx5_flow_tcf.c
> index 5a38940..4d154b6 100644
> --- a/drivers/net/mlx5/mlx5_flow_tcf.c
> +++ b/drivers/net/mlx5/mlx5_flow_tcf.c
> @@ -3732,44 +3732,60 @@ struct pedit_parser { {
> unsigned int portid = mnl_socket_get_portid(tcf->nl);
> uint32_t seq = tcf->seq++;
> - int err, ret;
> + int ret, err = 0;
>
> assert(tcf->nl);
> assert(tcf->buf);
> - if (!seq)
> + if (!seq) {
> /* seq 0 is reserved for kernel event-driven notifications. */
> seq = tcf->seq++;
> + }
> nlh->nlmsg_seq = seq;
> nlh->nlmsg_flags |= NLM_F_ACK;
> ret = mnl_socket_sendto(tcf->nl, nlh, nlh->nlmsg_len);
> - err = (ret <= 0) ? errno : 0;
> + if (ret <= 0) {
> + /* Message send error occurres. */
> + rte_errno = errno;
> + return -rte_errno;
> + }
> 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);
> + while (true) {
This while(true) is a bit disturbing (I know it exists also before).
Can't we bound it to some limit, e.g. is there any multiply of tcf->buf_size that if we receive more than that it is for sure an error?
> + ret = mnl_socket_recvfrom(tcf->nl, tcf->buf, tcf->buf_size);
> + if (ret < 0) {
> + err = errno;
> + /*
> + * In case of overflow Will receive till
> + * end of multipart message. We may lost part
> + * of reply messages but mark and return an error.
> + */
> + if (err != ENOSPC ||
> + !(nlh->nlmsg_flags & NLM_F_MULTI) ||
> + nlh->nlmsg_type == NLMSG_DONE)
> + break;
> + } else {
> + ret = mnl_cb_run(nlh, ret, seq, portid, cb, arg);
> + if (!ret) {
> + /*
> + * libmnl returns 0 if DONE or
> + * success ACK message found.
> + */
> + break;
> + }
> if (ret < 0) {
> + /*
> + * ACK message with error found
> + * or some error occurred.
> + */
> 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;
> + }
> + /* We should continue receiving. */
> }
> + }
> if (!err)
> return 0;
> rte_errno = err;
> --
> 1.8.3.1
next prev parent reply other threads:[~2018-11-13 13:21 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
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 [this message]
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 03/13] net/mlx5: add necessary definitions for E-Switch VXLAN Slava Ovsiienko
2018-11-03 6:18 ` [dpdk-dev] [PATCH v5 02/13] net/mlx5: prepare meson.build for adding " Slava Ovsiienko
2018-11-03 6:18 ` [dpdk-dev] [PATCH v5 04/13] net/mlx5: add necessary structures for " 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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