i40e: move I40E_FLAG_UDP_FILTER_SYNC to the state field

This flag is modified during run time, possibly even when the RTNL lock
is not held. Additionally it has a few places which should be using
test_and_set or test_and_clear atomic bit operations.

Create a new state bit __I40E_UDP_SYNC_PENDING and use it instead of the
ole I40E_FLAG_UDP_FILTER_SYNC flag.

This is part of a larger effort to remove the need for using cmpxchg64
in i40e_set_priv_flags.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h
index 52f9914..f557c3c 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e.h
+++ b/drivers/net/ethernet/intel/i40e/i40e.h
@@ -163,6 +163,7 @@ enum i40e_state_t {
        __I40E_PORT_SUSPENDED,
        __I40E_VF_DISABLE,
        __I40E_MACVLAN_SYNC_PENDING,
+       __I40E_UDP_FILTER_SYNC_PENDING,
        /* This must be last as it determines the size of the BITMAP */
        __I40E_STATE_SIZE__,
 };
@@ -526,7 +527,7 @@ struct i40e_pf {
 #define I40E_FLAG_FD_SB_AUTO_DISABLED          BIT_ULL(11)
 #define I40E_FLAG_FD_ATR_AUTO_DISABLED         BIT_ULL(12)
 #define I40E_FLAG_MFP_ENABLED                  BIT_ULL(13)
-#define I40E_FLAG_UDP_FILTER_SYNC              BIT_ULL(14)
+/* Gap for BIT_ULL(14) */
 #define I40E_FLAG_HW_ATR_EVICT_ENABLED         BIT_ULL(15)
 #define I40E_FLAG_VEB_MODE_ENABLED             BIT_ULL(16)
 #define I40E_FLAG_VEB_STATS_ENABLED            BIT_ULL(17)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 7fc2c6d..3177e82 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -9721,7 +9721,7 @@ static void i40e_sync_udp_filters(struct i40e_pf *pf)
                        pf->pending_udp_bitmap |= BIT_ULL(i);
        }
 
-       pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
+       set_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state);
 }
 
 /**
@@ -9735,11 +9735,9 @@ static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
        u16 port;
        int i;
 
-       if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
+       if (!test_and_clear_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state))
                return;
 
-       pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
-
        for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
                if (pf->pending_udp_bitmap & BIT_ULL(i)) {
                        pf->pending_udp_bitmap &= ~BIT_ULL(i);
@@ -11439,7 +11437,7 @@ static void i40e_udp_tunnel_add(struct net_device *netdev,
        /* New port: add it and mark its index in the bitmap */
        pf->udp_ports[next_idx].port = port;
        pf->pending_udp_bitmap |= BIT_ULL(next_idx);
-       pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
+       set_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state);
 }
 
 /**
@@ -11480,7 +11478,7 @@ static void i40e_udp_tunnel_del(struct net_device *netdev,
         */
        pf->udp_ports[idx].port = 0;
        pf->pending_udp_bitmap |= BIT_ULL(idx);
-       pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
+       set_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state);
 
        return;
 not_found: