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Date: Tue, 26 Mar 2024 20:19:17 +0000
From: "Loktionov, Aleksandr" <aleksandr.loktionov@...el.com>
To: ivecera <ivecera@...hat.com>, "intel-wired-lan@...ts.osuosl.org"
<intel-wired-lan@...ts.osuosl.org>
CC: "open list:NETWORKING DRIVERS" <netdev@...r.kernel.org>, open list
<linux-kernel@...r.kernel.org>, Eric Dumazet <edumazet@...gle.com>, "Nguyen,
Anthony L" <anthony.l.nguyen@...el.com>, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, "David S. Miller" <davem@...emloft.net>
Subject: RE: [Intel-wired-lan] [PATCH iwl-next 6/7] i40e: Add helper to access
main VEB
> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@...osl.org> On
> Behalf Of Ivan Vecera
> Sent: Monday, March 18, 2024 3:31 PM
> To: intel-wired-lan@...ts.osuosl.org
> Cc: open list:NETWORKING DRIVERS <netdev@...r.kernel.org>; open
> list <linux-kernel@...r.kernel.org>; Eric Dumazet
> <edumazet@...gle.com>; Nguyen, Anthony L
> <anthony.l.nguyen@...el.com>; Jakub Kicinski <kuba@...nel.org>;
> Paolo Abeni <pabeni@...hat.com>; David S. Miller
> <davem@...emloft.net>
> Subject: [Intel-wired-lan] [PATCH iwl-next 6/7] i40e: Add helper to
> access main VEB
>
> Add a helper to access main VEB:
>
> i40e_pf_get_main_veb(pf) replaces 'pf->veb[pf->lan_veb]'
>
> Signed-off-by: Ivan Vecera <ivecera@...hat.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@...el.com>
> ---
> drivers/net/ethernet/intel/i40e/i40e.h | 11 ++++++++
> .../net/ethernet/intel/i40e/i40e_ethtool.c | 9 +++----
> drivers/net/ethernet/intel/i40e/i40e_main.c | 27 ++++++++++++---
> ----
> 3 files changed, 31 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/net/ethernet/intel/i40e/i40e.h
> b/drivers/net/ethernet/intel/i40e/i40e.h
> index fb0b913692e1..2f135db416cf 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e.h
> +++ b/drivers/net/ethernet/intel/i40e/i40e.h
> @@ -1401,4 +1401,15 @@ i40e_pf_get_veb_by_seid(struct i40e_pf *pf,
> u16 seid)
> return NULL;
> }
>
> +/**
> + * i40e_pf_get_main_veb - get pointer to main VEB
> + * @pf: pointer to a PF
> + *
> + * Return pointer to main VEB or NULL if it does not exist **/
> static
> +inline struct i40e_veb *i40e_pf_get_main_veb(struct i40e_pf *pf) {
> + return (pf->lan_veb != I40E_NO_VEB) ? pf->veb[pf->lan_veb] :
> NULL; }
> +
> #endif /* _I40E_H_ */
> diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> index 5cd0d1b45f01..4e28785c9fb2 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> @@ -2425,14 +2425,11 @@ static void i40e_get_ethtool_stats(struct
> net_device *netdev,
> if (vsi->type != I40E_VSI_MAIN || pf->hw.partition_id != 1)
> goto check_data_pointer;
>
> - veb_stats = ((pf->lan_veb != I40E_NO_VEB) &&
> - (pf->lan_veb < I40E_MAX_VEB) &&
> - test_bit(I40E_FLAG_VEB_STATS_ENA, pf->flags));
> + veb = i40e_pf_get_main_veb(pf);
> + veb_stats = veb && test_bit(I40E_FLAG_VEB_STATS_ENA, pf-
> >flags);
>
> - if (veb_stats) {
> - veb = pf->veb[pf->lan_veb];
> + if (veb_stats)
> i40e_update_veb_stats(veb);
> - }
>
> /* If veb stats aren't enabled, pass NULL instead of the veb
> so that
> * we initialize stats to zero and update the data pointer
> diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c
> b/drivers/net/ethernet/intel/i40e/i40e_main.c
> index d6dbd0fd79eb..2e1955064abb 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_main.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
> @@ -2480,7 +2480,7 @@ static int i40e_set_promiscuous(struct
> i40e_pf *pf, bool promisc)
> int aq_ret;
>
> if (vsi->type == I40E_VSI_MAIN &&
> - pf->lan_veb != I40E_NO_VEB &&
> + i40e_pf_get_main_veb(pf) &&
> !test_bit(I40E_FLAG_MFP_ENA, pf->flags)) {
> /* set defport ON for Main VSI instead of true promisc
> * this way we will get all unicast/multicast and VLAN
> @@ -9916,6 +9916,7 @@ static void i40e_veb_link_event(struct
> i40e_veb *veb, bool link_up) static void i40e_link_event(struct
> i40e_pf *pf) {
> struct i40e_vsi *vsi = i40e_pf_get_main_vsi(pf);
> + struct i40e_veb *veb = i40e_pf_get_main_veb(pf);
> u8 new_link_speed, old_link_speed;
> bool new_link, old_link;
> int status;
> @@ -9955,8 +9956,8 @@ static void i40e_link_event(struct i40e_pf
> *pf)
> /* Notify the base of the switch tree connected to
> * the link. Floating VEBs are not notified.
> */
> - if (pf->lan_veb < I40E_MAX_VEB && pf->veb[pf->lan_veb])
> - i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
> + if (veb)
> + i40e_veb_link_event(veb, new_link);
> else
> i40e_vsi_link_event(vsi, new_link);
>
> @@ -14892,7 +14893,8 @@ static void
> i40e_setup_pf_switch_element(struct i40e_pf *pf,
> /* Main VEB? */
> if (uplink_seid != pf->mac_seid)
> break;
> - if (pf->lan_veb >= I40E_MAX_VEB) {
> + veb = i40e_pf_get_main_veb(pf);
> + if (!veb) {
> int v;
>
> /* find existing or else empty VEB */ @@ -
> 14906,12 +14908,15 @@ static void
> i40e_setup_pf_switch_element(struct i40e_pf *pf,
> pf->lan_veb = v;
> }
> }
> - if (pf->lan_veb >= I40E_MAX_VEB)
> +
> + /* Try to get again main VEB as pf->lan_veb may have
> changed */
> + veb = i40e_pf_get_main_veb(pf);
> + if (!veb)
> break;
>
> - pf->veb[pf->lan_veb]->seid = seid;
> - pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
> - pf->veb[pf->lan_veb]->pf = pf;
> + veb->seid = seid;
> + veb->uplink_seid = pf->mac_seid;
> + veb->pf = pf;
> break;
> case I40E_SWITCH_ELEMENT_TYPE_VSI:
> if (num_reported != 1)
> @@ -15056,13 +15061,15 @@ static int i40e_setup_pf_switch(struct
> i40e_pf *pf, bool reinit, bool lock_acqui
> /* first time setup */
> main_vsi = i40e_pf_get_main_vsi(pf);
> if (!main_vsi || reinit) {
> + struct i40e_veb *veb;
> u16 uplink_seid;
>
> /* Set up the PF VSI associated with the PF's main VSI
> * that is already in the HW switch
> */
> - if (pf->lan_veb < I40E_MAX_VEB && pf->veb[pf->lan_veb])
> - uplink_seid = pf->veb[pf->lan_veb]->seid;
> + veb = i40e_pf_get_main_veb(pf);
> + if (veb)
> + uplink_seid = veb->seid;
> else
> uplink_seid = pf->mac_seid;
> if (!main_vsi)
> --
> 2.43.0
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