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Date: Wed, 27 May 2020 09:21:37 -0700
From: Saeed Mahameed <saeedm@...lanox.com>
To: "David S. Miller" <davem@...emloft.net>, kuba@...nel.org
Cc: netdev@...r.kernel.org, Eli Britstein <elibr@...lanox.com>,
Roi Dayan <roid@...lanox.com>,
Saeed Mahameed <saeedm@...lanox.com>
Subject: [net-next V2 13/15] net/mlx5e: Optimize performance for IPv4/IPv6 ethertype
From: Eli Britstein <elibr@...lanox.com>
The HW is optimized for IPv4/IPv6. For such cases, pending capability,
avoid matching on ethertype, and use ip_version field instead.
Signed-off-by: Eli Britstein <elibr@...lanox.com>
Reviewed-by: Roi Dayan <roid@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
.../mellanox/mlx5/core/diag/fs_tracepoint.c | 85 ++++++++++---------
.../ethernet/mellanox/mlx5/core/en/tc_ct.c | 7 +-
.../ethernet/mellanox/mlx5/core/en/tc_tun.c | 8 +-
.../net/ethernet/mellanox/mlx5/core/en_tc.c | 40 +++++++--
.../net/ethernet/mellanox/mlx5/core/en_tc.h | 5 +-
5 files changed, 85 insertions(+), 60 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c b/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c
index 8ecac81a385d..a700f3c86899 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c
@@ -76,58 +76,59 @@ static void print_lyr_2_4_hdrs(struct trace_seq *p,
.v = MLX5_GET(fte_match_set_lyr_2_4, value, dmac_47_16) << 16 |
MLX5_GET(fte_match_set_lyr_2_4, value, dmac_15_0)};
MASK_VAL_L2(u16, ethertype, ethertype);
+ MASK_VAL_L2(u8, ip_version, ip_version);
PRINT_MASKED_VALP(smac, u8 *, p, "%pM");
PRINT_MASKED_VALP(dmac, u8 *, p, "%pM");
PRINT_MASKED_VAL(ethertype, p, "%04x");
- if (ethertype.m == 0xffff) {
- if (ethertype.v == ETH_P_IP) {
+ if ((ethertype.m == 0xffff && ethertype.v == ETH_P_IP) ||
+ (ip_version.m == 0xf && ip_version.v == 4)) {
#define MASK_VAL_L2_BE(type, name, fld) \
MASK_VAL_BE(type, fte_match_set_lyr_2_4, name, mask, value, fld)
- MASK_VAL_L2_BE(u32, src_ipv4,
- src_ipv4_src_ipv6.ipv4_layout.ipv4);
- MASK_VAL_L2_BE(u32, dst_ipv4,
- dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
+ MASK_VAL_L2_BE(u32, src_ipv4,
+ src_ipv4_src_ipv6.ipv4_layout.ipv4);
+ MASK_VAL_L2_BE(u32, dst_ipv4,
+ dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
- PRINT_MASKED_VALP(src_ipv4, typeof(&src_ipv4.v), p,
- "%pI4");
- PRINT_MASKED_VALP(dst_ipv4, typeof(&dst_ipv4.v), p,
- "%pI4");
- } else if (ethertype.v == ETH_P_IPV6) {
- static const struct in6_addr full_ones = {
- .in6_u.u6_addr32 = {__constant_htonl(0xffffffff),
- __constant_htonl(0xffffffff),
- __constant_htonl(0xffffffff),
- __constant_htonl(0xffffffff)},
- };
- DECLARE_MASK_VAL(struct in6_addr, src_ipv6);
- DECLARE_MASK_VAL(struct in6_addr, dst_ipv6);
+ PRINT_MASKED_VALP(src_ipv4, typeof(&src_ipv4.v), p,
+ "%pI4");
+ PRINT_MASKED_VALP(dst_ipv4, typeof(&dst_ipv4.v), p,
+ "%pI4");
+ } else if ((ethertype.m == 0xffff && ethertype.v == ETH_P_IPV6) ||
+ (ip_version.m == 0xf && ip_version.v == 6)) {
+ static const struct in6_addr full_ones = {
+ .in6_u.u6_addr32 = {__constant_htonl(0xffffffff),
+ __constant_htonl(0xffffffff),
+ __constant_htonl(0xffffffff),
+ __constant_htonl(0xffffffff)},
+ };
+ DECLARE_MASK_VAL(struct in6_addr, src_ipv6);
+ DECLARE_MASK_VAL(struct in6_addr, dst_ipv6);
- memcpy(src_ipv6.m.in6_u.u6_addr8,
- MLX5_ADDR_OF(fte_match_set_lyr_2_4, mask,
- src_ipv4_src_ipv6.ipv6_layout.ipv6),
- sizeof(src_ipv6.m));
- memcpy(dst_ipv6.m.in6_u.u6_addr8,
- MLX5_ADDR_OF(fte_match_set_lyr_2_4, mask,
- dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
- sizeof(dst_ipv6.m));
- memcpy(src_ipv6.v.in6_u.u6_addr8,
- MLX5_ADDR_OF(fte_match_set_lyr_2_4, value,
- src_ipv4_src_ipv6.ipv6_layout.ipv6),
- sizeof(src_ipv6.v));
- memcpy(dst_ipv6.v.in6_u.u6_addr8,
- MLX5_ADDR_OF(fte_match_set_lyr_2_4, value,
- dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
- sizeof(dst_ipv6.v));
+ memcpy(src_ipv6.m.in6_u.u6_addr8,
+ MLX5_ADDR_OF(fte_match_set_lyr_2_4, mask,
+ src_ipv4_src_ipv6.ipv6_layout.ipv6),
+ sizeof(src_ipv6.m));
+ memcpy(dst_ipv6.m.in6_u.u6_addr8,
+ MLX5_ADDR_OF(fte_match_set_lyr_2_4, mask,
+ dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
+ sizeof(dst_ipv6.m));
+ memcpy(src_ipv6.v.in6_u.u6_addr8,
+ MLX5_ADDR_OF(fte_match_set_lyr_2_4, value,
+ src_ipv4_src_ipv6.ipv6_layout.ipv6),
+ sizeof(src_ipv6.v));
+ memcpy(dst_ipv6.v.in6_u.u6_addr8,
+ MLX5_ADDR_OF(fte_match_set_lyr_2_4, value,
+ dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
+ sizeof(dst_ipv6.v));
- if (!memcmp(&src_ipv6.m, &full_ones, sizeof(full_ones)))
- trace_seq_printf(p, "src_ipv6=%pI6 ",
- &src_ipv6.v);
- if (!memcmp(&dst_ipv6.m, &full_ones, sizeof(full_ones)))
- trace_seq_printf(p, "dst_ipv6=%pI6 ",
- &dst_ipv6.v);
- }
+ if (!memcmp(&src_ipv6.m, &full_ones, sizeof(full_ones)))
+ trace_seq_printf(p, "src_ipv6=%pI6 ",
+ &src_ipv6.v);
+ if (!memcmp(&dst_ipv6.m, &full_ones, sizeof(full_ones)))
+ trace_seq_printf(p, "dst_ipv6=%pI6 ",
+ &dst_ipv6.v);
}
#define PRINT_MASKED_VAL_L2(type, name, fld, p, format) {\
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c
index ba72410c55fa..afc19dca1f5f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c
@@ -119,7 +119,7 @@ mlx5_tc_ct_get_ct_priv(struct mlx5e_priv *priv)
}
static int
-mlx5_tc_ct_set_tuple_match(struct mlx5_flow_spec *spec,
+mlx5_tc_ct_set_tuple_match(struct mlx5e_priv *priv, struct mlx5_flow_spec *spec,
struct flow_rule *rule)
{
void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
@@ -134,7 +134,8 @@ mlx5_tc_ct_set_tuple_match(struct mlx5_flow_spec *spec,
flow_rule_match_basic(rule, &match);
- mlx5e_tc_set_ethertype(headers_c, headers_v, &match);
+ mlx5e_tc_set_ethertype(priv->mdev, &match, true, headers_c,
+ headers_v);
MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
match.mask->ip_proto);
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
@@ -530,7 +531,7 @@ mlx5_tc_ct_entry_add_rule(struct mlx5_tc_ct_priv *ct_priv,
attr->counter = entry->counter;
attr->flags |= MLX5_ESW_ATTR_FLAG_NO_IN_PORT;
- mlx5_tc_ct_set_tuple_match(spec, flow_rule);
+ mlx5_tc_ct_set_tuple_match(netdev_priv(ct_priv->netdev), spec, flow_rule);
mlx5e_tc_match_to_reg_match(spec, ZONE_TO_REG,
entry->zone & MLX5_CT_ZONE_MASK,
MLX5_CT_ZONE_MASK);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
index 105d3b2e1a87..91ca14bbab46 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
@@ -545,8 +545,8 @@ int mlx5e_tc_tun_parse(struct net_device *filter_dev,
ntohl(match.key->dst));
key_basic.n_proto = htons(ETH_P_IP);
- mlx5e_tc_set_ethertype(headers_c, headers_v,
- &match_basic);
+ mlx5e_tc_set_ethertype(priv->mdev, &match_basic, true,
+ headers_c, headers_v);
} else if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
struct flow_match_ipv6_addrs match;
@@ -570,8 +570,8 @@ int mlx5e_tc_tun_parse(struct net_device *filter_dev,
ipv6));
key_basic.n_proto = htons(ETH_P_IPV6);
- mlx5e_tc_set_ethertype(headers_c, headers_v,
- &match_basic);
+ mlx5e_tc_set_ethertype(priv->mdev, &match_basic, true,
+ headers_c, headers_v);
}
}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 680b9e090057..fdb7d2686c35 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -2020,13 +2020,30 @@ u32 mlx5e_tc_get_flow_tun_id(struct mlx5e_tc_flow *flow)
return flow->tunnel_id;
}
-void mlx5e_tc_set_ethertype(void *headers_c, void *headers_v,
- struct flow_match_basic *match)
-{
- MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
- ntohs(match->mask->n_proto));
- MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
- ntohs(match->key->n_proto));
+void mlx5e_tc_set_ethertype(struct mlx5_core_dev *mdev,
+ struct flow_match_basic *match, bool outer,
+ void *headers_c, void *headers_v)
+{
+ bool ip_version_cap;
+
+ ip_version_cap = outer ?
+ MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
+ ft_field_support.outer_ip_version) :
+ MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
+ ft_field_support.inner_ip_version);
+
+ if (ip_version_cap && match->mask->n_proto == 0xFFFF &&
+ (match->key->n_proto == htons(ETH_P_IP) ||
+ match->key->n_proto == htons(ETH_P_IPV6))) {
+ MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_version);
+ MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_version,
+ match->key->n_proto == htons(ETH_P_IP) ? 4 : 6);
+ } else {
+ MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
+ ntohs(match->mask->n_proto));
+ MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
+ ntohs(match->key->n_proto));
+ }
}
static int parse_tunnel_attr(struct mlx5e_priv *priv,
@@ -2250,7 +2267,9 @@ static int __parse_cls_flower(struct mlx5e_priv *priv,
struct flow_match_basic match;
flow_rule_match_basic(rule, &match);
- mlx5e_tc_set_ethertype(headers_c, headers_v, &match);
+ mlx5e_tc_set_ethertype(priv->mdev, &match,
+ match_level == outer_match_level,
+ headers_c, headers_v);
if (match.mask->n_proto)
*match_level = MLX5_MATCH_L2;
@@ -3126,16 +3145,19 @@ static bool modify_header_match_supported(struct mlx5_flow_spec *spec,
{
const struct flow_action_entry *act;
bool modify_ip_header;
+ void *headers_c;
void *headers_v;
u16 ethertype;
u8 ip_proto;
int i, err;
+ headers_c = get_match_headers_criteria(actions, spec);
headers_v = get_match_headers_value(actions, spec);
ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
/* for non-IP we only re-write MACs, so we're okay */
- if (ethertype != ETH_P_IP && ethertype != ETH_P_IPV6)
+ if (MLX5_GET(fte_match_set_lyr_2_4, headers_c, ip_version) == 0 &&
+ ethertype != ETH_P_IP && ethertype != ETH_P_IPV6)
goto out_ok;
modify_ip_header = false;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
index 144b71f571ea..5c330b0cae21 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
@@ -170,8 +170,9 @@ void dealloc_mod_hdr_actions(struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts);
struct mlx5e_tc_flow;
u32 mlx5e_tc_get_flow_tun_id(struct mlx5e_tc_flow *flow);
-void mlx5e_tc_set_ethertype(void *headers_c, void *headers_v,
- struct flow_match_basic *match);
+void mlx5e_tc_set_ethertype(struct mlx5_core_dev *mdev,
+ struct flow_match_basic *match, bool outer,
+ void *headers_c, void *headers_v);
#if IS_ENABLED(CONFIG_MLX5_CLS_ACT)
--
2.26.2
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