From bfe040c3851ad09e0944de7b0973a71323610e23 Mon Sep 17 00:00:00 2001 From: Jacob Keller Date: Fri, 16 Mar 2018 01:26:30 -0700 Subject: [PATCH] i40e: move I40E_FLAG_FILTER_SYNC to a state bit The I40E_FLAG_FILTER_SYNC flag is modified during run time possibly when the RTNL lock is not held. Thus, it should not be part of pf->flags, and instead should be using atomic bit operations in the pf->state field. Create a __I40E_MACVLAN_SYNC_PENDING state bit, and use it instead of the old I40E_FLAG_FILTER_SYNC flag. This is part of a larger effort to remove the need for cmpxchg64 in i40e_set_priv_flags(). Signed-off-by: Jacob Keller Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e.h | 3 ++- drivers/net/ethernet/intel/i40e/i40e_main.c | 16 +++++++++------- 2 files changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h index 1d33a8b3ef54..52f99142244b 100644 --- a/drivers/net/ethernet/intel/i40e/i40e.h +++ b/drivers/net/ethernet/intel/i40e/i40e.h @@ -162,6 +162,7 @@ enum i40e_state_t { __I40E_RESET_FAILED, __I40E_PORT_SUSPENDED, __I40E_VF_DISABLE, + __I40E_MACVLAN_SYNC_PENDING, /* This must be last as it determines the size of the BITMAP */ __I40E_STATE_SIZE__, }; @@ -516,7 +517,7 @@ struct i40e_pf { #define I40E_FLAG_MSIX_ENABLED BIT_ULL(2) #define I40E_FLAG_RSS_ENABLED BIT_ULL(3) #define I40E_FLAG_VMDQ_ENABLED BIT_ULL(4) -#define I40E_FLAG_FILTER_SYNC BIT_ULL(5) +/* Gap for BIT_ULL(5) */ #define I40E_FLAG_SRIOV_ENABLED BIT_ULL(6) #define I40E_FLAG_DCB_CAPABLE BIT_ULL(7) #define I40E_FLAG_DCB_ENABLED BIT_ULL(8) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 536ed8e8a96f..7fc2c6d89637 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -1382,7 +1382,7 @@ struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi, hash_add(vsi->mac_filter_hash, &f->hlist, key); vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED; - vsi->back->flags |= I40E_FLAG_FILTER_SYNC; + set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state); } /* If we're asked to add a filter that has been marked for removal, it @@ -1432,7 +1432,7 @@ void __i40e_del_filter(struct i40e_vsi *vsi, struct i40e_mac_filter *f) } vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED; - vsi->back->flags |= I40E_FLAG_FILTER_SYNC; + set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->state); } /** @@ -1955,7 +1955,7 @@ static void i40e_set_rx_mode(struct net_device *netdev) /* check for other flag changes */ if (vsi->current_netdev_flags != vsi->netdev->flags) { vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED; - vsi->back->flags |= I40E_FLAG_FILTER_SYNC; + set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state); } } @@ -2577,9 +2577,10 @@ static void i40e_sync_filters_subtask(struct i40e_pf *pf) { int v; - if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC)) + if (!pf) + return; + if (!test_and_clear_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state)) return; - pf->flags &= ~I40E_FLAG_FILTER_SYNC; for (v = 0; v < pf->num_alloc_vsi; v++) { if (pf->vsi[v] && @@ -2588,7 +2589,8 @@ static void i40e_sync_filters_subtask(struct i40e_pf *pf) if (ret) { /* come back and try again later */ - pf->flags |= I40E_FLAG_FILTER_SYNC; + set_bit(__I40E_MACVLAN_SYNC_PENDING, + pf->state); break; } } @@ -12240,7 +12242,7 @@ static int i40e_add_vsi(struct i40e_vsi *vsi) if (f_count) { vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED; - pf->flags |= I40E_FLAG_FILTER_SYNC; + set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state); } /* Update VSI BW information */ -- 2.30.2