From: Mark Bloch <mbloch@nvidia.com>
To: "David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Eric Dumazet <edumazet@google.com>,
Andrew Lunn <andrew+netdev@lunn.ch>
Cc: Saeed Mahameed <saeedm@nvidia.com>,
Tariq Toukan <tariqt@nvidia.com>,
"Leon Romanovsky" <leon@kernel.org>, <netdev@vger.kernel.org>,
<linux-rdma@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Vlad Dogaru <vdogaru@nvidia.com>,
Yevgeny Kliteynik <kliteyn@nvidia.com>,
Mark Bloch <mbloch@nvidia.com>
Subject: [PATCH net-next 1/3] net/mlx5: HWS, Fix IP version decision
Date: Tue, 22 Apr 2025 12:25:38 +0300 [thread overview]
Message-ID: <20250422092540.182091-2-mbloch@nvidia.com> (raw)
In-Reply-To: <20250422092540.182091-1-mbloch@nvidia.com>
From: Vlad Dogaru <vdogaru@nvidia.com>
Unify the check for IP version when creating a definer. A given matcher
is deemed to match on IPv6 if any of the higher order (>31) bits of
source or destination address mask are set.
A single packet cannot mix IP versions between source and destination
addresses, so it makes no sense that they would be decided on
independently.
Signed-off-by: Vlad Dogaru <vdogaru@nvidia.com>
Reviewed-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
---
.../mellanox/mlx5/core/steering/hws/definer.c | 38 ++++++++-----------
1 file changed, 16 insertions(+), 22 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c
index c8cc0c8115f5..5257e706dde2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c
@@ -509,9 +509,9 @@ static int
hws_definer_conv_outer(struct mlx5hws_definer_conv_data *cd,
u32 *match_param)
{
- bool is_s_ipv6, is_d_ipv6, smac_set, dmac_set;
struct mlx5hws_definer_fc *fc = cd->fc;
struct mlx5hws_definer_fc *curr_fc;
+ bool is_ipv6, smac_set, dmac_set;
u32 *s_ipv6, *d_ipv6;
if (HWS_IS_FLD_SET_SZ(match_param, outer_headers.l4_type, 0x2) ||
@@ -570,10 +570,10 @@ hws_definer_conv_outer(struct mlx5hws_definer_conv_data *cd,
outer_headers.dst_ipv4_dst_ipv6.ipv6_layout);
/* Assume IPv6 is used if ipv6 bits are set */
- is_s_ipv6 = s_ipv6[0] || s_ipv6[1] || s_ipv6[2];
- is_d_ipv6 = d_ipv6[0] || d_ipv6[1] || d_ipv6[2];
+ is_ipv6 = s_ipv6[0] || s_ipv6[1] || s_ipv6[2] ||
+ d_ipv6[0] || d_ipv6[1] || d_ipv6[2];
- if (is_s_ipv6) {
+ if (is_ipv6) {
/* Handle IPv6 source address */
HWS_SET_HDR(fc, match_param, IPV6_SRC_127_96_O,
outer_headers.src_ipv4_src_ipv6.ipv6_simple_layout.ipv6_127_96,
@@ -587,13 +587,6 @@ hws_definer_conv_outer(struct mlx5hws_definer_conv_data *cd,
HWS_SET_HDR(fc, match_param, IPV6_SRC_31_0_O,
outer_headers.src_ipv4_src_ipv6.ipv6_simple_layout.ipv6_31_0,
ipv6_src_outer.ipv6_address_31_0);
- } else {
- /* Handle IPv4 source address */
- HWS_SET_HDR(fc, match_param, IPV4_SRC_O,
- outer_headers.src_ipv4_src_ipv6.ipv6_simple_layout.ipv6_31_0,
- ipv4_src_dest_outer.source_address);
- }
- if (is_d_ipv6) {
/* Handle IPv6 destination address */
HWS_SET_HDR(fc, match_param, IPV6_DST_127_96_O,
outer_headers.dst_ipv4_dst_ipv6.ipv6_simple_layout.ipv6_127_96,
@@ -608,6 +601,10 @@ hws_definer_conv_outer(struct mlx5hws_definer_conv_data *cd,
outer_headers.dst_ipv4_dst_ipv6.ipv6_simple_layout.ipv6_31_0,
ipv6_dst_outer.ipv6_address_31_0);
} else {
+ /* Handle IPv4 source address */
+ HWS_SET_HDR(fc, match_param, IPV4_SRC_O,
+ outer_headers.src_ipv4_src_ipv6.ipv6_simple_layout.ipv6_31_0,
+ ipv4_src_dest_outer.source_address);
/* Handle IPv4 destination address */
HWS_SET_HDR(fc, match_param, IPV4_DST_O,
outer_headers.dst_ipv4_dst_ipv6.ipv6_simple_layout.ipv6_31_0,
@@ -665,9 +662,9 @@ static int
hws_definer_conv_inner(struct mlx5hws_definer_conv_data *cd,
u32 *match_param)
{
- bool is_s_ipv6, is_d_ipv6, smac_set, dmac_set;
struct mlx5hws_definer_fc *fc = cd->fc;
struct mlx5hws_definer_fc *curr_fc;
+ bool is_ipv6, smac_set, dmac_set;
u32 *s_ipv6, *d_ipv6;
if (HWS_IS_FLD_SET_SZ(match_param, inner_headers.l4_type, 0x2) ||
@@ -728,10 +725,10 @@ hws_definer_conv_inner(struct mlx5hws_definer_conv_data *cd,
inner_headers.dst_ipv4_dst_ipv6.ipv6_layout);
/* Assume IPv6 is used if ipv6 bits are set */
- is_s_ipv6 = s_ipv6[0] || s_ipv6[1] || s_ipv6[2];
- is_d_ipv6 = d_ipv6[0] || d_ipv6[1] || d_ipv6[2];
+ is_ipv6 = s_ipv6[0] || s_ipv6[1] || s_ipv6[2] ||
+ d_ipv6[0] || d_ipv6[1] || d_ipv6[2];
- if (is_s_ipv6) {
+ if (is_ipv6) {
/* Handle IPv6 source address */
HWS_SET_HDR(fc, match_param, IPV6_SRC_127_96_I,
inner_headers.src_ipv4_src_ipv6.ipv6_simple_layout.ipv6_127_96,
@@ -745,13 +742,6 @@ hws_definer_conv_inner(struct mlx5hws_definer_conv_data *cd,
HWS_SET_HDR(fc, match_param, IPV6_SRC_31_0_I,
inner_headers.src_ipv4_src_ipv6.ipv6_simple_layout.ipv6_31_0,
ipv6_src_inner.ipv6_address_31_0);
- } else {
- /* Handle IPv4 source address */
- HWS_SET_HDR(fc, match_param, IPV4_SRC_I,
- inner_headers.src_ipv4_src_ipv6.ipv6_simple_layout.ipv6_31_0,
- ipv4_src_dest_inner.source_address);
- }
- if (is_d_ipv6) {
/* Handle IPv6 destination address */
HWS_SET_HDR(fc, match_param, IPV6_DST_127_96_I,
inner_headers.dst_ipv4_dst_ipv6.ipv6_simple_layout.ipv6_127_96,
@@ -766,6 +756,10 @@ hws_definer_conv_inner(struct mlx5hws_definer_conv_data *cd,
inner_headers.dst_ipv4_dst_ipv6.ipv6_simple_layout.ipv6_31_0,
ipv6_dst_inner.ipv6_address_31_0);
} else {
+ /* Handle IPv4 source address */
+ HWS_SET_HDR(fc, match_param, IPV4_SRC_I,
+ inner_headers.src_ipv4_src_ipv6.ipv6_simple_layout.ipv6_31_0,
+ ipv4_src_dest_inner.source_address);
/* Handle IPv4 destination address */
HWS_SET_HDR(fc, match_param, IPV4_DST_I,
inner_headers.dst_ipv4_dst_ipv6.ipv6_simple_layout.ipv6_31_0,
--
2.34.1
next prev parent reply other threads:[~2025-04-22 9:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-22 9:25 [PATCH net-next 0/3] net/mlx5: HWS, Improve IP version handling Mark Bloch
2025-04-22 9:25 ` Mark Bloch [this message]
2025-04-22 9:25 ` [PATCH net-next 2/3] net/mlx5: HWS, Harden IP version definer checks Mark Bloch
2025-04-22 9:25 ` [PATCH net-next 3/3] net/mlx5: HWS, Disallow matcher IP version mixing Mark Bloch
2025-04-24 2:00 ` [PATCH net-next 0/3] net/mlx5: HWS, Improve IP version handling patchwork-bot+netdevbpf
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=20250422092540.182091-2-mbloch@nvidia.com \
--to=mbloch@nvidia.com \
--cc=andrew+netdev@lunn.ch \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=kliteyn@nvidia.com \
--cc=kuba@kernel.org \
--cc=leon@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=saeedm@nvidia.com \
--cc=tariqt@nvidia.com \
--cc=vdogaru@nvidia.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