patches for DPDK stable branches
 help / color / mirror / Atom feed
From: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
To: dev@dpdk.org
Cc: matan@mellanox.com, rasland@mellanox.com, orika@mellanox.com,
	stable@dpdk.org
Subject: [dpdk-stable] [PATCH] net/mlx5: fix matcher metadata register c0 field setup
Date: Fri, 20 Dec 2019 07:48:58 +0000
Message-ID: <1576828138-13063-1-git-send-email-viacheslavo@mellanox.com> (raw)

The metadata register c0 field in the matcher might be split
into two independent fields - the source vport index and META
item value. These fields have no permanent assigned bits, the
configuration is queried from the kernel drivers.

MLX5_SET configures the specified 32-bit field as whole entity.
For metadata register c0 we should take into account the provided
mask in order to configure the specified subfield bits only.

Fixes: acfcd5c52f94 ("net/mlx5: update meta register matcher set")
Cc: stable@dpdk.org

Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 4c16281..893db3e 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -5742,6 +5742,7 @@ struct field_modify_info modify_tcp[] = {
 		MLX5_ADDR_OF(fte_match_param, matcher, misc_parameters_2);
 	void *misc2_v =
 		MLX5_ADDR_OF(fte_match_param, key, misc_parameters_2);
+	uint32_t temp;
 
 	data &= mask;
 	switch (reg_type) {
@@ -5754,8 +5755,18 @@ struct field_modify_info modify_tcp[] = {
 		MLX5_SET(fte_match_set_misc2, misc2_v, metadata_reg_b, data);
 		break;
 	case REG_C_0:
-		MLX5_SET(fte_match_set_misc2, misc2_m, metadata_reg_c_0, mask);
-		MLX5_SET(fte_match_set_misc2, misc2_v, metadata_reg_c_0, data);
+		/*
+		 * The metadata register C0 field might be divided into
+		 * source vport index and META item value, we should set
+		 * this field accorfing to specified mask, not as whole one.
+		 */
+		temp = MLX5_GET(fte_match_set_misc2, misc2_m, metadata_reg_c_0);
+		temp |= mask;
+		MLX5_SET(fte_match_set_misc2, misc2_m, metadata_reg_c_0, temp);
+		temp = MLX5_GET(fte_match_set_misc2, misc2_v, metadata_reg_c_0);
+		temp &= ~mask;
+		temp |= data;
+		MLX5_SET(fte_match_set_misc2, misc2_v, metadata_reg_c_0, temp);
 		break;
 	case REG_C_1:
 		MLX5_SET(fte_match_set_misc2, misc2_m, metadata_reg_c_1, mask);
-- 
1.8.3.1


             reply	other threads:[~2019-12-20  7:49 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-20  7:48 Viacheslav Ovsiienko [this message]
2020-01-06 14:50 ` Matan Azrad
2020-01-07 11:31   ` Raslan Darawsheh
2020-01-08 14:47 ` Ferruh Yigit
2020-01-17 15:04   ` Slava Ovsiienko
2020-01-17 11:01 ` [dpdk-stable] [PATCH v2] net/mlx5: fix shared metadata matcher " Viacheslav Ovsiienko
2020-01-17 17:18   ` Ferruh Yigit

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=1576828138-13063-1-git-send-email-viacheslavo@mellanox.com \
    --to=viacheslavo@mellanox.com \
    --cc=dev@dpdk.org \
    --cc=matan@mellanox.com \
    --cc=orika@mellanox.com \
    --cc=rasland@mellanox.com \
    --cc=stable@dpdk.org \
    /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

patches for DPDK stable branches

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://inbox.dpdk.org/stable/0 stable/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 stable stable/ https://inbox.dpdk.org/stable \
		stable@dpdk.org
	public-inbox-index stable

Example config snippet for mirrors.
Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.stable


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git