net/mlx5e: fix double free in mlx5e_destroy_flow_table

In function accel_fs_tcp_create_groups(), when the ft->g memory is
successfully allocated but the 'in' memory fails to be allocated, the
memory pointed to by ft->g is released once. And in function
accel_fs_tcp_create_table, mlx5e_destroy_flow_table is called to release
the memory pointed to by ft->g again. This will cause double free problem.

Fixes: c062d52ac24c ("net/mlx5e: Receive flow steering framework for accelerated TCP flows")
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5e: Use kzalloc() in mlx5e_accel_fs_tcp_create()

'accel_tcp' is allocted by kvzalloc() now, which is a small chunk.
Use kzalloc() directly instead of kvzalloc().

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5e: Use kvfree() in mlx5e_accel_fs_tcp_create()

'accel_tcp' is allocated by kvzalloc(), which should freed by kvfree().

Fixes: f52f2faee581 ("net/mlx5e: Introduce flow steering API")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5e: Introduce flow steering debug macros

Introduce flow steering debug macros family, fs_*.
These macros bring clean finish to the decoupling of flow steering
process such that all flow steering flows can report warnings and
provide debug information via these exclusive macros.

Signed-off-by: Lama Kayal <lkayal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5e: Decouple fs_tcp from en.h

Make flow steering files fs_tcp.c/h independent of en.h
such that they go through the flow steering API only.

Make error reports be via mlx5_core API instead of netdev_err API, this
to ensure a safe decoupling from en.h, and prevent redundant argument
passing.

Signed-off-by: Lama Kayal <lkayal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5e: Introduce flow steering API

Move mlx5e_flow_steering struct to fs_en.c to make it private.
Introduce flow_steering API and let other files go through it.

Signed-off-by: Lama Kayal <lkayal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5e: Convert mlx5e_flow_steering member of mlx5e_priv to pointer

Make mlx5e_flow_steering member of mlx5e_priv a pointer.
Add dynamic allocation respectively.

Allocate fs for all profiles when initializing profile,
symmetrically deallocate at profile cleanup.

Signed-off-by: Lama Kayal <lkayal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

ipv6: Use ipv6_only_sock() helper in condition.

This patch replaces some sk_ipv6only tests with ipv6_only_sock().

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/mlx5: Embed mlx5_ttc_table

mlx5_ttc_table struct shouldn't be exposed to the users so
this patch make it internal to ttc.

In addition add a getter function to get the TTC flow table for users
that need to add a rule which points on it.

Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>

net/mlx5e: Decouple TTC logic from mlx5e

Remove dependency in the mlx5e driver from the TTC implementation
by changing the TTC related functions to receive mlx5 generic arguments.
It allows to decouple TTC logic from mlx5e and reused by other parts of
mlx5 driver.

Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5e: Rename traffic type enums

Rename traffic type enums as part of the preparation for moving
the traffic type logic to a separate file.

Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net: mlx5e: fix fs_tcp.c build when IPV6 is not enabled

Fix build when CONFIG_IPV6 is not enabled by making a function
be built conditionally.

Fixes these build errors and warnings:

../drivers/net/ethernet/mellanox/mlx5/core/en_accel/fs_tcp.c: In function 'accel_fs_tcp_set_ipv6_flow':
../include/net/sock.h:380:34: error: 'struct sock_common' has no member named 'skc_v6_daddr'; did you mean 'skc_daddr'?
380 | #define sk_v6_daddr __sk_common.skc_v6_daddr
| ^~~~~~~~~~~~
../drivers/net/ethernet/mellanox/mlx5/core/en_accel/fs_tcp.c:55:14: note: in expansion of macro 'sk_v6_daddr'
55 | &sk->sk_v6_daddr, 16);
| ^~~~~~~~~~~
At top level:
../drivers/net/ethernet/mellanox/mlx5/core/en_accel/fs_tcp.c:47:13: warning: 'accel_fs_tcp_set_ipv6_flow' defined but not used [-Wunused-function]
47 | static void accel_fs_tcp_set_ipv6_flow(struct mlx5_flow_spec *spec, struct sock *sk)

Fixes: 5229a96e59ec ("net/mlx5e: Accel, Expose flow steering API for rules add/del")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net/mlx5e: Use kfree() to free fd->g in accel_fs_tcp_create_groups()

Memory ft->g in accel_fs_tcp_create_groups() is allocaed with kcalloc().
It's excessive to free ft->g with kvfree(). Use kfree() instead.

Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

net/mlx5e: Accel, Expose flow steering API for rules add/del

Given a socket, the function extracts the TCP/IP{4,6} ntuple
and adds rule to steering.
Another function gets the rule and deletes it.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com>

net/mlx5e: Receive flow steering framework for accelerated TCP flows

The framework allows creating flow tables to steer incoming traffic of
TCP sockets to the acceleration TIRs.
This is used in downstream patches for TLS, and will be used in the
future for other offloads.

Signed-off-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>